Re: How important are manual controls on CNC machines?

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Dan Mauch" <dmauch@s...>
wrote:

>
> If you used a double shaft stepper you could mount a
> handwheel on the back shaft for manual operation.

Two problems:

1) Don't have a double shaft stepper

2) Not enough space. The motor is oriented with the
shaft vertical. The top of the timing belt pulley
will be just under the bottom of the spindle drive
pulley, and the bottom of the stepper will be about
even with the end of the quill when the quill is all
the way up. If there was a shaft sticking out of
the bottom of the motor, it and the crank would be
inside the work envelope of the machine.

John Kasunich