Rack and Pinion drive

[921X0]

I have built one cnc router machine using the "Ajax screws" , I guess that is the name. I want to build another but I want to use rack and pinions. Is there a relation between the motor speed ( I have NEMA 23's) and the tooth spacing on the racks?

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[Eldon_Joh]

gear racks are typically dimetrical pitch, or metric, so there should be no guessing about this.


if you take a 14 dp gear rack and a 14 dp gear of 14 teeth, one rotation should equal pi inches of travel.

[mattcnc123]

You can use any rack and pinion and
then domthe setup in your control software.

just need to do some backlash compensation.

mattcnc