Re: [CAD_CAM_EDM_DRO] Rack and pinion how to figure torque and pitch angle why 14 deg

> I know how to calculate the torque by belting or gearing what are
> the equations for a rack and pinion. Also why you have to use 14 deg
> There seams to be more selection at 20 deg.The Motors I have are
> Small and I need to be able to move the gantry head at
> 800 inch per min I building a burn table and want to use rack and
> pinion I need to know how much increase in torque using what pitch
> gear on the pinion.
> Thanks Randy

The torque multiplier is the same as standard gears. Torque Output =
(Output Gear teeth * Input Torque)/ Input Gear teeth. There is also a very
significant thrust load on the output gear as well as a bending moment on
the input and output gear drive shafts. You can even calculate the required
pitch gearing/ outer diameter/ pressure angle of the Output gear if you are
given the max input power.

I had a question like this on a finial in a Mechanical Engineering
Mechanical Design Class II.
Hard stuff.

Jeff Martin