Re: [CAD_CAM_EDM_DRO] Re: Ballscrew accuracy
Posted by
Raymond Heckert
on 2002-10-30 18:08:54 UTC
'dspinnett', A leadscrew that's, say, 12.004" instead of
12.000" for "x" pitches would be, more than likely, 3.001
at 3.000, 6.002 at 6.000, and 9.003 at 9.000. Very rarely,
due to the mfg processes used, do the actual pitches vary
back & forth. So, if you're lucky, you can use your
software to compensate for the 0.00033 per inch
discrepancy. Good Luck!
RayHex
----------
12.000" for "x" pitches would be, more than likely, 3.001
at 3.000, 6.002 at 6.000, and 9.003 at 9.000. Very rarely,
due to the mfg processes used, do the actual pitches vary
back & forth. So, if you're lucky, you can use your
software to compensate for the 0.00033 per inch
discrepancy. Good Luck!
RayHex
----------
> From: dspinnett <dspinnett@...>Would that
>
> My work envelope at one shot is rarely over 6" anyway.
> justify .001 screws and anti-backlash? I'd like to beaccurate over
> 6" within a couple thou if practical.a full size
>
> Final goal is to make mini running engines, and probably
> engine too. The 'Griz' doesn't seem too bad overall -better quality
> that the lathe anyway. (both are brand new).