https://wiki.das-labor.org/index.php?title=DasBand&feed=atom&action=historyDasBand - Versionsgeschichte2024-03-29T10:18:39ZVersionsgeschichte dieser Seite in LaborWikiMediaWiki 1.39.6https://wiki.das-labor.org/index.php?title=DasBand&diff=26106&oldid=prevBitpick am 7. April 2017 um 23:10 Uhr2017-04-07T23:10:14Z<p></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Version vom 8. April 2017, 00:10 Uhr</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>|author=A.B.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>|author=A.B.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>|platform=Sophistication</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>|platform=Sophistication</div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">|update=</ins></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>|tags=Bewegung und Mechanik,</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>|tags=Bewegung und Mechanik,</div></td></tr>
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</table>Bitpickhttps://wiki.das-labor.org/index.php?title=DasBand&diff=26104&oldid=prevBitpick am 7. April 2017 um 23:09 Uhr2017-04-07T23:09:58Z<p></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Version vom 8. April 2017, 00:09 Uhr</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{ProjektInfoBox</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{ProjektInfoBox</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>|name <del style="font-weight: bold; text-decoration: none;"> </del>= Das Band - Polyethylene Extruder</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>|name=Das Band - Polyethylene Extruder</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>|status <del style="font-weight: bold; text-decoration: none;"> </del>= stable</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>|status=stable</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>|image <del style="font-weight: bold; text-decoration: none;"> </del>= IMG 2323.JPG</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>|image=IMG 2323.JPG</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>|description = A Band making machine. </div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>|description=A Band making machine.</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>|author <del style="font-weight: bold; text-decoration: none;"> </del>= A.B.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">|username=Bilex</ins></div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">|username = Bilex</del></div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>|author=A.B.</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">|version = </del></div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>|platform=Sophistication</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">|update = </del></div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>|<ins style="font-weight: bold; text-decoration: none;">tags</ins>=<ins style="font-weight: bold; text-decoration: none;">Bewegung und Mechanik,</ins></div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>|platform <del style="font-weight: bold; text-decoration: none;"> </del>= Sophistication</div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>|<del style="font-weight: bold; text-decoration: none;">license = </del></div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">|download </del>= </div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>}}</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>}}</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"></del></div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"></del></div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Information ==</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Information ==</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
</table>Bitpickhttps://wiki.das-labor.org/index.php?title=DasBand&diff=23211&oldid=prevBilex: /* Motor & Gear & Housing */2015-01-13T21:55:08Z<p><span dir="auto"><span class="autocomment">Motor & Gear & Housing</span></span></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Version vom 13. Januar 2015, 22:55 Uhr</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>===Motor & Gear & Housing===</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>===Motor & Gear & Housing===</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>First tests were made with a low-budget gearmotor found on ebay. Those are advertised with high torque rates. A closer look at the data sheet <del style="font-weight: bold; text-decoration: none;"> </del>shows that sometimes these numbers are the stall values. That means: No rotation at given load. The required torque for proper operation was not known before and there was no clue how to calculate it. The motor not only needs to press the material through the pipe and the die, sometimes the drill needs to cut pellets on their way from the hopper inside the heating pipe. That means that the required power depends on the used material. <del style="font-weight: bold; text-decoration: none;"> </del>The first test-material was a gift from the plastic lab of the University Duisburg Essen. They gave us a whole 25kg bag for testing purpose. <del style="font-weight: bold; text-decoration: none;"> </del>Unfortunately the material was not suitable for processing it in a selfmade-extruder due to its low [http://en.wikipedia.org/wiki/Melt_flow_index MFI] (Melt-flow-index) value. Even with very high temperatures the material did not become liquid as expected. Even without a die the first testing drivetrain nearly stalled.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>First tests were made with a low-budget gearmotor found on ebay. Those are advertised with high torque rates. A closer look at the data sheet shows that sometimes these numbers are the stall values. That means: No rotation at given load. The required torque for proper operation was not known before and there was no clue how to calculate it. The motor not only needs to press the material through the pipe and the die, sometimes the drill needs to cut pellets on their way from the hopper inside the heating pipe. That means that the required power depends on the used material. The first test-material was a gift from the plastic lab of the University Duisburg Essen. They gave us a whole 25kg bag for testing purpose. Unfortunately the material was not suitable for processing it in a selfmade-extruder due to its low [http://en.wikipedia.org/wiki/Melt_flow_index MFI] (Melt-flow-index) value. Even with very high temperatures the material did not become liquid as expected. Even without a die the first testing drivetrain nearly stalled.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>After that failure I met Helmut at the Labor. Helmut is a polymere expert. He advised me to try a PE with a higher MFI. He recommended me to contact a well-known local plastic company in order to ask for a helping hand. A few days later another 25kg PE bag with PE pellets inside (amazing: PE pellets packed in a PE bag.) arrived at the Labor. Within these days I found a 120V gearmotor in the Labor basement. Someone told me it was used as mechanical switch in a high voltage application. This means: The device temperature may increase during continuous operation. Finally the motor was operated with 15V and there where no thermal problems at all. Although the motor is very big and seems to be very powerful (no datasheet or further information available) a gear box was added to increase torque by lowering the speed of rotation. The gearbox was manufactured by using the Labor [https://www.das-labor.org/wiki/CNC-Fraese CNC-Fräse]. This was the most intense adventure I experienced with the machine so far. Proper gears and a solid housing are important to handle the power of the transmission. <del style="font-weight: bold; text-decoration: none;"> </del>According to the power consumption and the speed of rotation the torque is approx. 10Nm during normal operation and using the high MFI LD-PE.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>After that failure I met Helmut at the Labor. Helmut is a polymere expert. He advised me to try a PE with a higher MFI. He recommended me to contact a well-known local plastic company in order to ask for a helping hand. A few days later another 25kg PE bag with PE pellets inside (amazing: PE pellets packed in a PE bag.) arrived at the Labor. Within these days I found a 120V gearmotor in the Labor basement. Someone told me it was used as mechanical switch in a high voltage application. This means: The device temperature may increase during continuous operation. Finally the motor was operated with 15V and there where no thermal problems at all. Although the motor is very big and seems to be very powerful (no datasheet or further information available) a gear box was added to increase torque by lowering the speed of rotation. The gearbox was manufactured by using the Labor [https://www.das-labor.org/wiki/CNC-Fraese CNC-Fräse]. This was the most intense adventure I experienced with the machine so far. Proper gears and a solid housing are important to handle the power of the transmission. According to the power consumption and the speed of rotation the torque is approx. 10Nm during normal operation and using the high MFI LD-PE.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><gallery></div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><gallery></div></td></tr>
</table>Bilexhttps://wiki.das-labor.org/index.php?title=DasBand&diff=23210&oldid=prevBilex: /* Processing */2015-01-13T21:52:21Z<p><span dir="auto"><span class="autocomment">Processing</span></span></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Version vom 13. Januar 2015, 22:52 Uhr</td>
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<td colspan="2" class="diff-lineno">Zeile 26:</td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The Extruder is the machine creating ''das Band''. It works similar to those machines known from industrial production of plastic pipes, sheets and profiles. </div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The Extruder is the machine creating ''das Band''. It works similar to those machines known from industrial production of plastic pipes, sheets and profiles. </div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>A turning screw (here: ordinary 20mm drill bit) takes plastic pellets from a feed hopper and squeeze them through a die. While in industrial machines the energy is provided by shear strain and high pressure, this machine works with <del style="font-weight: bold; text-decoration: none;">an </del>heating area where the pellets start to melt. After inserting energy into the material, it needs to be cooled down after leaving the die immediately to bring it into shape. (This loss of energy is a general problem during the extrusion process, even in industrial processing.)</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>A turning screw (here: ordinary 20mm drill bit) takes plastic pellets from a feed hopper and squeeze them through a die. While in industrial machines the energy is provided by shear strain and high pressure, this machine works with <ins style="font-weight: bold; text-decoration: none;">a </ins>heating area where the pellets start to melt. After inserting energy into the material, it needs to be cooled down after leaving the die immediately to bring it into shape. (This loss of energy is a general problem during the extrusion process, even in industrial processing.)</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Several rotating rolls work as a shaping unit.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Several rotating rolls work as a shaping unit.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
</table>Bilexhttps://wiki.das-labor.org/index.php?title=DasBand&diff=20403&oldid=prevBilex: /* Motor & Gear & Housing */2013-01-05T15:40:26Z<p><span dir="auto"><span class="autocomment">Motor & Gear & Housing</span></span></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
<col class="diff-marker" />
<col class="diff-content" />
<col class="diff-marker" />
<col class="diff-content" />
<tr class="diff-title" lang="de">
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Nächstältere Version</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Version vom 5. Januar 2013, 16:40 Uhr</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l36">Zeile 36:</td>
<td colspan="2" class="diff-lineno">Zeile 36:</td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>After that failure I met Helmut at the Labor. Helmut is a polymere expert. He advised me to try a PE with a higher MFI. He recommended me to contact a well-known local plastic company in order to ask for a helping hand. A few days later another 25kg PE bag with PE pellets inside (amazing: PE pellets packed in a PE bag.) arrived at the Labor. Within these days I found a 120V gearmotor in the Labor basement. Someone told me it was used as mechanical switch in a high voltage application. This means: The device temperature may increase during continuous operation. Finally the motor was operated with 15V and there where no thermal problems at all. Although the motor is very big and seems to be very powerful (no datasheet or further information available) a gear box was added to increase torque by lowering the speed of rotation. The gearbox was manufactured by using the Labor [https://www.das-labor.org/wiki/CNC-Fraese CNC-Fräse]. This was the most intense adventure I experienced with the machine so far. Proper gears and a solid housing are important to handle the power of the transmission. According to the power consumption and the speed of rotation the torque is approx. 10Nm during normal operation and using the high MFI LD-PE.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>After that failure I met Helmut at the Labor. Helmut is a polymere expert. He advised me to try a PE with a higher MFI. He recommended me to contact a well-known local plastic company in order to ask for a helping hand. A few days later another 25kg PE bag with PE pellets inside (amazing: PE pellets packed in a PE bag.) arrived at the Labor. Within these days I found a 120V gearmotor in the Labor basement. Someone told me it was used as mechanical switch in a high voltage application. This means: The device temperature may increase during continuous operation. Finally the motor was operated with 15V and there where no thermal problems at all. Although the motor is very big and seems to be very powerful (no datasheet or further information available) a gear box was added to increase torque by lowering the speed of rotation. The gearbox was manufactured by using the Labor [https://www.das-labor.org/wiki/CNC-Fraese CNC-Fräse]. This was the most intense adventure I experienced with the machine so far. Proper gears and a solid housing are important to handle the power of the transmission. According to the power consumption and the speed of rotation the torque is approx. 10Nm during normal operation and using the high MFI LD-PE.</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"></del></div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"></del></div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"></del></div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"></del></div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"></del></div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><gallery></div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><gallery></div></td></tr>
</table>Bilexhttps://wiki.das-labor.org/index.php?title=DasBand&diff=20402&oldid=prevBilex: /* Motor & Gear & Housing */2013-01-05T15:36:02Z<p><span dir="auto"><span class="autocomment">Motor & Gear & Housing</span></span></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
<col class="diff-marker" />
<col class="diff-content" />
<col class="diff-marker" />
<col class="diff-content" />
<tr class="diff-title" lang="de">
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Nächstältere Version</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Version vom 5. Januar 2013, 16:36 Uhr</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l35">Zeile 35:</td>
<td colspan="2" class="diff-lineno">Zeile 35:</td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>First tests were made with a low-budget gearmotor found on ebay. Those are advertised with high torque rates. A closer look at the data sheet shows that sometimes these numbers are the stall values. That means: No rotation at given load. The required torque for proper operation was not known before and there was no clue how to calculate it. The motor not only needs to press the material through the pipe and the die, sometimes the drill needs to cut pellets on their way from the hopper inside the heating pipe. That means that the required power depends on the used material. The first test-material was a gift from the plastic lab of the University Duisburg Essen. They gave us a whole 25kg bag for testing purpose. Unfortunately the material was not suitable for processing it in a selfmade-extruder due to its low [http://en.wikipedia.org/wiki/Melt_flow_index MFI] (Melt-flow-index) value. Even with very high temperatures the material did not become liquid as expected. Even without a die the first testing drivetrain nearly stalled.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>First tests were made with a low-budget gearmotor found on ebay. Those are advertised with high torque rates. A closer look at the data sheet shows that sometimes these numbers are the stall values. That means: No rotation at given load. The required torque for proper operation was not known before and there was no clue how to calculate it. The motor not only needs to press the material through the pipe and the die, sometimes the drill needs to cut pellets on their way from the hopper inside the heating pipe. That means that the required power depends on the used material. The first test-material was a gift from the plastic lab of the University Duisburg Essen. They gave us a whole 25kg bag for testing purpose. Unfortunately the material was not suitable for processing it in a selfmade-extruder due to its low [http://en.wikipedia.org/wiki/Melt_flow_index MFI] (Melt-flow-index) value. Even with very high temperatures the material did not become liquid as expected. Even without a die the first testing drivetrain nearly stalled.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>After that failure I met Helmut at the Labor. Helmut is a polymere expert. He advised me to try a PE with a higher MFI. He recommended me to contact a well-known local plastic company in order to ask for a helping hand. A few days later another 25kg PE bag with PE pellets inside (amazing: PE pellets packed in a PE bag.) arrived at the Labor. Within these days I found a 120V gearmotor in the Labor basement. Someone told me it was used as mechanical switch in a high voltage application. This means: The device temperature may <del style="font-weight: bold; text-decoration: none;">decrease </del>during continuous operation. Finally the motor was operated with 15V and there where no thermal problems at all. Although the motor is very big and seems to be very powerful (no datasheet or further information available) a gear box was added to increase torque by lowering the speed of rotation. The gearbox was manufactured by using the Labor [https://www.das-labor.org/wiki/CNC-Fraese CNC-Fräse]. This was the most intense adventure I experienced with the machine so far. Proper gears and a solid housing are important to handle the power of the transmission. According to the power consumption and the speed of rotation the torque is approx. 10Nm during normal operation and using the high MFI <del style="font-weight: bold; text-decoration: none;">LDPE</del>.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>After that failure I met Helmut at the Labor. Helmut is a polymere expert. He advised me to try a PE with a higher MFI. He recommended me to contact a well-known local plastic company in order to ask for a helping hand. A few days later another 25kg PE bag with PE pellets inside (amazing: PE pellets packed in a PE bag.) arrived at the Labor. Within these days I found a 120V gearmotor in the Labor basement. Someone told me it was used as mechanical switch in a high voltage application. This means: The device temperature may <ins style="font-weight: bold; text-decoration: none;">increase </ins>during continuous operation. Finally the motor was operated with 15V and there where no thermal problems at all. Although the motor is very big and seems to be very powerful (no datasheet or further information available) a gear box was added to increase torque by lowering the speed of rotation. The gearbox was manufactured by using the Labor [https://www.das-labor.org/wiki/CNC-Fraese CNC-Fräse]. This was the most intense adventure I experienced with the machine so far. Proper gears and a solid housing are important to handle the power of the transmission. According to the power consumption and the speed of rotation the torque is approx. 10Nm during normal operation and using the high MFI <ins style="font-weight: bold; text-decoration: none;">LD-PE</ins>.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
</table>Bilexhttps://wiki.das-labor.org/index.php?title=DasBand&diff=20401&oldid=prevBilex: /* Motor & Gear & Housing */2013-01-05T15:34:31Z<p><span dir="auto"><span class="autocomment">Motor & Gear & Housing</span></span></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
<col class="diff-marker" />
<col class="diff-content" />
<col class="diff-marker" />
<col class="diff-content" />
<tr class="diff-title" lang="de">
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Nächstältere Version</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Version vom 5. Januar 2013, 16:34 Uhr</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l35">Zeile 35:</td>
<td colspan="2" class="diff-lineno">Zeile 35:</td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>First tests were made with a low-budget gearmotor found on ebay. Those are advertised with high torque rates. A closer look at the data sheet shows that sometimes these numbers are the stall values. That means: No rotation at given load. The required torque for proper operation was not known before and there was no clue how to calculate it. The motor not only needs to press the material through the pipe and the die, sometimes the drill needs to cut pellets on their way from the hopper inside the heating pipe. That means that the required power depends on the used material. The first test-material was a gift from the plastic lab of the University Duisburg Essen. They gave us a whole 25kg bag for testing purpose. Unfortunately the material was not suitable for processing it in a selfmade-extruder due to its low [http://en.wikipedia.org/wiki/Melt_flow_index MFI] (Melt-flow-index) value. Even with very high temperatures the material did not become liquid as expected. Even without a die the first testing drivetrain nearly stalled.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>First tests were made with a low-budget gearmotor found on ebay. Those are advertised with high torque rates. A closer look at the data sheet shows that sometimes these numbers are the stall values. That means: No rotation at given load. The required torque for proper operation was not known before and there was no clue how to calculate it. The motor not only needs to press the material through the pipe and the die, sometimes the drill needs to cut pellets on their way from the hopper inside the heating pipe. That means that the required power depends on the used material. The first test-material was a gift from the plastic lab of the University Duisburg Essen. They gave us a whole 25kg bag for testing purpose. Unfortunately the material was not suitable for processing it in a selfmade-extruder due to its low [http://en.wikipedia.org/wiki/Melt_flow_index MFI] (Melt-flow-index) value. Even with very high temperatures the material did not become liquid as expected. Even without a die the first testing drivetrain nearly stalled.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>After that failure I met Helmut at the Labor. Helmut is a polymere expert. He advised me to try a PE with a higher MFI. He recommended me to contact a well-known local plastic company in order to ask for a helping hand. A few days later another 25kg PE bag with PE pellets inside (amazing: PE pellets packed in a PE bag.) arrived at the Labor. Within these days I found a 120V gearmotor in the Labor basement. Someone told me it was used as mechanical switch in a high voltage application. This means: The device temperature may decrease during continuous operation. Finally the motor was operated with 15V and there where no thermal problems at all. Although the motor is very big and seems to be very powerful (no datasheet or further information available) a gear box was added to increase torque by lowering the speed of rotation. The gearbox was manufactured by using the Labor [https://www.das-labor.org/wiki/CNC-Fraese CNC-Fräse]. This was the most intense adventure I experienced with the machine so far<del style="font-weight: bold; text-decoration: none;">, including beads </del>of <del style="font-weight: bold; text-decoration: none;">perspiration</del>.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>After that failure I met Helmut at the Labor. Helmut is a polymere expert. He advised me to try a PE with a higher MFI. He recommended me to contact a well-known local plastic company in order to ask for a helping hand. A few days later another 25kg PE bag with PE pellets inside (amazing: PE pellets packed in a PE bag.) arrived at the Labor. Within these days I found a 120V gearmotor in the Labor basement. Someone told me it was used as mechanical switch in a high voltage application. This means: The device temperature may decrease during continuous operation. Finally the motor was operated with 15V and there where no thermal problems at all. Although the motor is very big and seems to be very powerful (no datasheet or further information available) a gear box was added to increase torque by lowering the speed of rotation. The gearbox was manufactured by using the Labor [https://www.das-labor.org/wiki/CNC-Fraese CNC-Fräse]. This was the most intense adventure I experienced with the machine so far<ins style="font-weight: bold; text-decoration: none;">. Proper gears and a solid housing are important to handle the power of the transmission. According to the power consumption and the speed </ins>of <ins style="font-weight: bold; text-decoration: none;">rotation the torque is approx. 10Nm during normal operation and using the high MFI LDPE</ins>.</div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
</table>Bilexhttps://wiki.das-labor.org/index.php?title=DasBand&diff=20400&oldid=prevBilex: /* Motor & Gear & Housing */2013-01-05T15:29:46Z<p><span dir="auto"><span class="autocomment">Motor & Gear & Housing</span></span></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
<col class="diff-marker" />
<col class="diff-content" />
<col class="diff-marker" />
<col class="diff-content" />
<tr class="diff-title" lang="de">
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Nächstältere Version</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Version vom 5. Januar 2013, 16:29 Uhr</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l35">Zeile 35:</td>
<td colspan="2" class="diff-lineno">Zeile 35:</td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>First tests were made with a low-budget gearmotor found on ebay. Those are advertised with high torque rates. A closer look at the data sheet shows that sometimes these numbers are the stall values. That means: No rotation at given load. The required torque for proper operation was not known before and there was no clue how to calculate it. The motor not only needs to press the material through the pipe and the die, sometimes the drill needs to cut pellets on their way from the hopper inside the heating pipe. That means that the required power depends on the used material. The first test-material was a gift from the plastic lab of the University Duisburg Essen. They gave us a whole 25kg bag for testing purpose. Unfortunately the material was not suitable for processing it in a selfmade-extruder due to its low [http://en.wikipedia.org/wiki/Melt_flow_index MFI] (Melt-flow-index) value. Even with very high temperatures the material did not become liquid as expected. Even without a die the first testing drivetrain nearly stalled.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>First tests were made with a low-budget gearmotor found on ebay. Those are advertised with high torque rates. A closer look at the data sheet shows that sometimes these numbers are the stall values. That means: No rotation at given load. The required torque for proper operation was not known before and there was no clue how to calculate it. The motor not only needs to press the material through the pipe and the die, sometimes the drill needs to cut pellets on their way from the hopper inside the heating pipe. That means that the required power depends on the used material. The first test-material was a gift from the plastic lab of the University Duisburg Essen. They gave us a whole 25kg bag for testing purpose. Unfortunately the material was not suitable for processing it in a selfmade-extruder due to its low [http://en.wikipedia.org/wiki/Melt_flow_index MFI] (Melt-flow-index) value. Even with very high temperatures the material did not become liquid as expected. Even without a die the first testing drivetrain nearly stalled.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>After that failure I met Helmut at the Labor. Helmut is a polymere expert. He advised me to try a PE with a higher MFI. He recommended me to contact a well-known local plastic company in order to ask for a helping hand. A few days later another 25kg PE bag with PE pellets inside (amazing: PE pellets packed in a PE bag.) arrived at the Labor. Within these days I found a 120V gearmotor in the Labor basement. Someone told me it was used as mechanical switch in a high voltage application. This means: The device temperature may decrease during continuous operation. Finally the motor was operated with 15V and there where no thermal problems at all. Although the motor is very big and seems to be very powerful (no datasheet or further information available) a gear box was added to increase torque by lowering the speed of rotation. The gearbox was manufactured by using the Labor [https://www.das-labor.org/wiki/CNC-Fraese CNC-Fräse]. </div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>After that failure I met Helmut at the Labor. Helmut is a polymere expert. He advised me to try a PE with a higher MFI. He recommended me to contact a well-known local plastic company in order to ask for a helping hand. A few days later another 25kg PE bag with PE pellets inside (amazing: PE pellets packed in a PE bag.) arrived at the Labor. Within these days I found a 120V gearmotor in the Labor basement. Someone told me it was used as mechanical switch in a high voltage application. This means: The device temperature may decrease during continuous operation. Finally the motor was operated with 15V and there where no thermal problems at all. Although the motor is very big and seems to be very powerful (no datasheet or further information available) a gear box was added to increase torque by lowering the speed of rotation. The gearbox was manufactured by using the Labor [https://www.das-labor.org/wiki/CNC-Fraese CNC-Fräse]<ins style="font-weight: bold; text-decoration: none;">. This was the most intense adventure I experienced with the machine so far, including beads of perspiration</ins>.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
</table>Bilexhttps://wiki.das-labor.org/index.php?title=DasBand&diff=20399&oldid=prevBilex: /* Motor & Gear & Housing */2013-01-05T15:23:46Z<p><span dir="auto"><span class="autocomment">Motor & Gear & Housing</span></span></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
<col class="diff-marker" />
<col class="diff-content" />
<col class="diff-marker" />
<col class="diff-content" />
<tr class="diff-title" lang="de">
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Nächstältere Version</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Version vom 5. Januar 2013, 16:23 Uhr</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l35">Zeile 35:</td>
<td colspan="2" class="diff-lineno">Zeile 35:</td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>First tests were made with a low-budget gearmotor found on ebay. Those are advertised with high torque rates. A closer look at the data sheet shows that sometimes these numbers are the stall values. That means: No rotation at given load. The required torque for proper operation was not known before and there was no clue how to calculate it. The motor not only needs to press the material through the pipe and the die, sometimes the drill needs to cut pellets on their way from the hopper inside the heating pipe. That means that the required power depends on the used material. The first test-material was a gift from the plastic lab of the University Duisburg Essen. They gave us a whole 25kg bag for testing purpose. Unfortunately the material was not suitable for processing it in a selfmade-extruder due to its low [http://en.wikipedia.org/wiki/Melt_flow_index MFI] (Melt-flow-index) value. Even with very high temperatures the material did not become liquid as expected. Even without a die the first testing drivetrain nearly stalled.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>First tests were made with a low-budget gearmotor found on ebay. Those are advertised with high torque rates. A closer look at the data sheet shows that sometimes these numbers are the stall values. That means: No rotation at given load. The required torque for proper operation was not known before and there was no clue how to calculate it. The motor not only needs to press the material through the pipe and the die, sometimes the drill needs to cut pellets on their way from the hopper inside the heating pipe. That means that the required power depends on the used material. The first test-material was a gift from the plastic lab of the University Duisburg Essen. They gave us a whole 25kg bag for testing purpose. Unfortunately the material was not suitable for processing it in a selfmade-extruder due to its low [http://en.wikipedia.org/wiki/Melt_flow_index MFI] (Melt-flow-index) value. Even with very high temperatures the material did not become liquid as expected. Even without a die the first testing drivetrain nearly stalled.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>After that failure I met Helmut at the Labor. Helmut is a polymere expert. He advised me to try a PE with a higher MFI. He recommended me to contact a well-known local plastic company in order to ask for a helping hand. A few days later another 25kg PE bag with PE pellets inside (amazing: PE pellets packed in a PE bag.) arrived at the Labor. Within these days I found a 120V gearmotor in the Labor basement. Someone told me it was used as mechanical switch in a high voltage application. This means: The device temperature may decrease during continuous operation. Finally the motor was operated with 15V and there where no thermal problems at all. Although the motor is very big and seems to be very powerful (no datasheet or further information available) a gear box was added to increase torque by lowering the speed of rotation.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>After that failure I met Helmut at the Labor. Helmut is a polymere expert. He advised me to try a PE with a higher MFI. He recommended me to contact a well-known local plastic company in order to ask for a helping hand. A few days later another 25kg PE bag with PE pellets inside (amazing: PE pellets packed in a PE bag.) arrived at the Labor. Within these days I found a 120V gearmotor in the Labor basement. Someone told me it was used as mechanical switch in a high voltage application. This means: The device temperature may decrease during continuous operation. Finally the motor was operated with 15V and there where no thermal problems at all. Although the motor is very big and seems to be very powerful (no datasheet or further information available) a gear box was added to increase torque by lowering the speed of rotation<ins style="font-weight: bold; text-decoration: none;">. The gearbox was manufactured by using the Labor [https://www.das-labor.org/wiki/CNC-Fraese CNC-Fräse]</ins>. </div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
</table>Bilexhttps://wiki.das-labor.org/index.php?title=DasBand&diff=20398&oldid=prevBilex: /* Motor & Gear */2013-01-05T15:20:21Z<p><span dir="auto"><span class="autocomment">Motor & Gear</span></span></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
<col class="diff-marker" />
<col class="diff-content" />
<col class="diff-marker" />
<col class="diff-content" />
<tr class="diff-title" lang="de">
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Nächstältere Version</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Version vom 5. Januar 2013, 16:20 Uhr</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l31">Zeile 31:</td>
<td colspan="2" class="diff-lineno">Zeile 31:</td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==The Machine==</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==The Machine==</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>===Motor & Gear===</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>===Motor & Gear <ins style="font-weight: bold; text-decoration: none;">& Housing</ins>===</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>First tests were made with a low-budget gearmotor found on ebay. Those are advertised with high torque rates. A closer look at the data sheet shows that sometimes these numbers are the stall values. That means: No rotation at given load. The required torque for proper operation was not known before and there was no clue how to calculate it. The motor not only needs to press the material through the pipe and the die, sometimes the drill needs to cut pellets on their way from the hopper inside the heating pipe. That means that the required power depends on the used material. The first test-material was a gift from the plastic lab of the University Duisburg Essen. They gave us a whole 25kg bag for testing purpose. Unfortunately the material was not suitable for processing it in a selfmade-extruder due to its low [http://en.wikipedia.org/wiki/Melt_flow_index MFI] (Melt-flow-index) value. Even with very high temperatures the material did not become liquid as expected. Even without a die the first testing drivetrain nearly stalled.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>First tests were made with a low-budget gearmotor found on ebay. Those are advertised with high torque rates. A closer look at the data sheet shows that sometimes these numbers are the stall values. That means: No rotation at given load. The required torque for proper operation was not known before and there was no clue how to calculate it. The motor not only needs to press the material through the pipe and the die, sometimes the drill needs to cut pellets on their way from the hopper inside the heating pipe. That means that the required power depends on the used material. The first test-material was a gift from the plastic lab of the University Duisburg Essen. They gave us a whole 25kg bag for testing purpose. Unfortunately the material was not suitable for processing it in a selfmade-extruder due to its low [http://en.wikipedia.org/wiki/Melt_flow_index MFI] (Melt-flow-index) value. Even with very high temperatures the material did not become liquid as expected. Even without a die the first testing drivetrain nearly stalled.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>After that failure I met Helmut at the Labor. Helmut is a polymere expert. He advised me to try a PE with a higher MFI. He recommended me to contact a <del style="font-weight: bold; text-decoration: none;">wellk</del>-<del style="font-weight: bold; text-decoration: none;">nown </del>local plastic company. A few days later another 25kg PE bag with PE pellets inside <del style="font-weight: bold; text-decoration: none;">arrived at the labor. </del>(<del style="font-weight: bold; text-decoration: none;">Amazing</del>: PE pellets packed in a PE bag.) <del style="font-weight: bold; text-decoration: none;"> Again, this </del>was a <del style="font-weight: bold; text-decoration: none;">free sample but </del>the <del style="font-weight: bold; text-decoration: none;">material </del>with the <del style="font-weight: bold; text-decoration: none;">lowest MFI they had in stock</del>.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>After that failure I met Helmut at the Labor. Helmut is a polymere expert. He advised me to try a PE with a higher MFI. He recommended me to contact a <ins style="font-weight: bold; text-decoration: none;">well</ins>-<ins style="font-weight: bold; text-decoration: none;">known </ins>local plastic company <ins style="font-weight: bold; text-decoration: none;">in order to ask for a helping hand</ins>. A few days later another 25kg PE bag with PE pellets inside (<ins style="font-weight: bold; text-decoration: none;">amazing</ins>: PE pellets packed in a PE bag.) <ins style="font-weight: bold; text-decoration: none;">arrived at the Labor. Within these days I found a 120V gearmotor in the Labor basement. Someone told me it </ins>was <ins style="font-weight: bold; text-decoration: none;">used as mechanical switch in </ins>a <ins style="font-weight: bold; text-decoration: none;">high voltage application. This means: The device temperature may decrease during continuous operation. Finally </ins>the <ins style="font-weight: bold; text-decoration: none;">motor was operated </ins>with <ins style="font-weight: bold; text-decoration: none;">15V and there where no thermal problems at all. Although </ins>the <ins style="font-weight: bold; text-decoration: none;">motor is very big and seems to be very powerful (no datasheet or further information available) a gear box was added to increase torque by lowering the speed of rotation</ins>.</div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
</table>Bilex