Shopbot Desktop converted to LinuxCNC
26 Jul 2016 03:55 - 26 Jul 2016 04:07 #78029
by jut
Shopbot Desktop converted to LinuxCNC was created by jut
Here's out Shopbot Desktop that was converted to Linuxcnc control. We decided to do a conversion because the oem software is buggy and lacking in performance and features compared to Linuxcnc.
Some key differences after upgrade:
1. more reliable communication between motion controller (LinuxCNC) and the machine
2. ability to control spindle with native Gcode commands via RS485
3. better homing and software limits on each axis + tool height setter
4. better compatibility with CAM gcode output
5. faster/smoother stepper pulse control due to Mesa 5i25 pci card
6. ability to extended the cnc machines abilities, like controlling a spot welder or pick and place machine.
Sorry to the linux purist, but the computer is running a win7 virtual machine for CAD/CAM in Autodesk Inventor. I've actually done CAD/CAM work while the cnc machine is making chips, mainly due to the fact that the Mesa card offloads the step generation burden.
Picture album: imgur.com/a/Eij2S
Aluminum busbars and PCB where machined on the Shopbot/LinuxCNC machine.
Some key differences after upgrade:
1. more reliable communication between motion controller (LinuxCNC) and the machine
2. ability to control spindle with native Gcode commands via RS485
3. better homing and software limits on each axis + tool height setter
4. better compatibility with CAM gcode output
5. faster/smoother stepper pulse control due to Mesa 5i25 pci card
6. ability to extended the cnc machines abilities, like controlling a spot welder or pick and place machine.
Sorry to the linux purist, but the computer is running a win7 virtual machine for CAD/CAM in Autodesk Inventor. I've actually done CAD/CAM work while the cnc machine is making chips, mainly due to the fact that the Mesa card offloads the step generation burden.
Picture album: imgur.com/a/Eij2S
Aluminum busbars and PCB where machined on the Shopbot/LinuxCNC machine.
Last edit: 26 Jul 2016 04:07 by jut.
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- tommylight
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28 Jul 2016 01:11 #78086
by tommylight
Replied by tommylight on topic Shopbot Desktop converted to LinuxCNC
That looks nice!
What are switching with all those transistors and capacitors?
Regards,
Tom
What are switching with all those transistors and capacitors?
Regards,
Tom
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28 Jul 2016 22:46 #78116
by jut
Replied by jut on topic Shopbot Desktop converted to LinuxCNC
Thanks Tom.
The capacitor bank (16V, 1.2F) is shorted via the mosfets across a metal joint to create a spot weld. It's known as a capacitive discharge spot welder.
The capacitor bank (16V, 1.2F) is shorted via the mosfets across a metal joint to create a spot weld. It's known as a capacitive discharge spot welder.
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28 Jul 2016 23:09 #78117
by tommylight
Replied by tommylight on topic Shopbot Desktop converted to LinuxCNC
Yup, i am fully aware of what it is and how it works, you did a neat job making it.
Keep up the good work.
Tom
Keep up the good work.
Tom
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28 Jul 2016 23:22 #78119
by jut
Replied by jut on topic Shopbot Desktop converted to LinuxCNC
Thanks for the comments.
BTW, that was version 1, which is 120J of stored energy. Version 2, which is about 80% done stores 500J.
BTW, that was version 1, which is 120J of stored energy. Version 2, which is about 80% done stores 500J.
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29 Jul 2016 00:25 #78120
by tommylight
Replied by tommylight on topic Shopbot Desktop converted to LinuxCNC
Rail gun anyone ???
![:laugh: :laugh:](/media/kunena/emoticons/laughing.png)
![:laugh: :laugh:](/media/kunena/emoticons/laughing.png)
![:laugh: :laugh:](/media/kunena/emoticons/laughing.png)
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