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First major setback: dead spindle motor

A project log for Grizzly G0755 CNC Build

Grizzly milling machine CNC-conversion, controlled by an ESP32-Wrover running MicroPython.

mukunda-modellMukunda Modell 12/21/2017 at 11:491 Comment

 A couple of days ago my grizzly 2hp spindle motor let out it's magic smoke. So now I'm waiting on delivery of a new 3 phase motor + variable frequency drive to power it. This will allow me to have better control of the spindle speed and I planned to upgrade eventually, however, I had hoped to avoid the cost until much later in the project.

While I'm waiting for the new motor + VFD, I plan to install the ballscrew for the table X-axis, which will replace the ACME screw, enabling smoother table movement with less friction and much less backlash than the crappy OEM lead screws.

I should have a decent amount of time to work on this project over the holiday as I have a week of vacation from work. I'll try to post another update next week.

Discussions

James Weist wrote 02/10/2018 at 22:02 point

Man the leadscrews on these machines, i have .0625" backlash on my X axis lol, the Y axis ain't too bad maybe a couple thousandths. I plan to do a servo belt drive spindle setup and ballscrews and cnc conversion myself.

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