RE: [CAD_CAM_EDM_DRO] Enco backlash

Yes and yes, I cnc'd an enco mill drill, used 650 ozin steppers, timing
belt pullyspulleys, tightened the backlash adj till I "felt" it getting
stiffer by hand and it workd great.
Not as good as a ball screw im sure but I can get press fit tolerances
on bearings which is all I need.
Hope this helps,
David

-----Original Message-----
From: Marv Frankel [mailto:dcdziner@...]
Sent: Tuesday, November 19, 2002 9:36 AM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: [CAD_CAM_EDM_DRO] Enco backlash


I've been following all kinds of solutions for reducing backlash in
CNC retrofits, from installing ball screws, to casting your own nuts.
I have an Enco 8 X 36 Model 100-1525 mill, and found instructions for
backlash adjustments on X-Y, on their web site. The yoke, through
which the X-Y screws pass has 2 cylindrical nuts for each screw. The
outer nuts have adjusting screws that effectively pre-load the nuts
to reduce backlash, and locking screws for maintaining the
adjustment. Has anyone been successful in using this on a CNC
machine, and how tight can you get the backlash?

Marv Frankel
Los Angeles



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