RE: [CAD_CAM_EDM_DRO] Z axis drive

>-----Original Message-----
>From: CAD_CAM_EDM_DRO@yahoogroups.com
>[mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of Ron Ginger
>Sent: January 5, 2006 08:01
>To: CAD_CAM_EDM_DRO@yahoogroups.com
>Subject: [CAD_CAM_EDM_DRO] Z axis drive
>
>Im doing a conversion on a large, square column, mill, like a RF-45, but
>from Wholesale Tool
>
>The Quill drive has a rewind spring to keep the quill up, and is driven
>down by either a drill press style wheel or a worm gear and small
>handwheel.
>
>I am considering driving the handwheel with a belt and stepper, and
>hoping the rewind spring can be set strong enough to keep backlash down
>to a workable level.
>
>Has anyone tried this? It seems to me the forces are always cutting down
>on Z, never when retracting, so the spring ought to do it.
>
>ron ginger
>
>
>
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