Re: [CAD_CAM_EDM_DRO] Re: VFD for series 1 bridgeport

My BP CNC was missing this air motor as well. It mostly functioned as a
spare part mine for other machines. It was never controled by the
computer, but had a button on the control panel.

I replaced it with a standard counterweighted machine crank from MSC.
It is quite geared down, and takes a lot of cranking to effect a speed
change, but it works OK. A pic:

http://www.arcadianclock.com/workshop/cnc/monitor.jpg

David M Munro


b

bjapundza wrote:

>>>The machine is missing the air-powered spindle control. I know
>>>
>very
>
>>>little about how these devices work. Thinking out loud, would it
>>>
>be
>
>>>possible to build a stepper-driven speed control that could be
>>>interfaced with EMC?
>>>