Centroid Community CNC Support Forum

Ok, a quick update. I have mounted X and have it running well. I can use the X through jog functions on screen. I will be purchasing the mpg from centroid. The Z I can use manually while I convert the ball nut/half nut arrangement and I think this will work well allowing disengagement for manual use. I am still trying to find a simple “software” way to lock the Z axis to prevent me running the unloaded ball screw while disengaged. I don’t think it will do any real harm but I would prefer it as a safety and a way to double check myself.

I have also pondered another question. Is there a way to program a broaching cycle for example to save me setting up the slotting head. Can you run a boring cycle with zero spindle speed to create simple key ways?

Scary wrote: ↑Fri Aug 20, 2021 2:23 am I have been looking at how I am going to mount the servo motors on the lathe and have found there is no practical way to keep the manual handwheels.

Have you considered a dual shaft stepper/servo? Then just mounting your handle to the other end of the motor where you would normally mount an encoder?

Or you could use a belt or gear to mount a handle to the mechanism.

Another option could be to wire your drives to the acorn and also daisy chain to a second PLC. Then just map some encoders to the drives to make your own MPG.
For example, a BRX PLC from automation direct allows you to map an encoder input through virtual gearing to a servo axis. So when you turn your encoder it turns the servo.

For the cost it might be worth going with an OAK, but I have zero experience of its capabilities