Z axis skipping.

Z axis skipping.

Postby Hofy » Sat May 12, 2018 9:06 pm

I have a Shapeoko2. Arduino Uno with Gshield. controlling Nema23 steppers. The Z axis is a belt drive Acme screw.
It has been working fine and today it is acting like it is binding. (See video).
I have done all the normal trouble shooting. Connections are good. Both mechanical and electrical. Nothing changed in any settings. Nothing is physically binding. Everything turns smooth by hand.

https://youtu.be/hoQ5dBHYltA
Shapeoko 2 #8123 Makita 0701 with aluminum mounts, Nema23, ACME Z Axis with Nema 23 Belt drive.
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Re: Z axis skipping.

Postby Improbable Construct » Sun May 13, 2018 4:22 pm

There is always the chance that the motor has gone bad. Try running it disconnected from the belt and see if it is behaving badly. Give it a bit of resistance with your fingers and see if you can feel anything wrong. If one of the coils go out they loose a lot of torque.
Shapeoko #Classified some of the bolts may be original parts.
Shapeoko 1 # ???? Stainless plates, still in the box.
Shapeoko 2 # 3926 not stock
Shapeoko 3 # 0003
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