Re: [CAD_CAM_EDM_DRO] Dan Ms' Mill drill Re: GeckoDrives.. Servo motor

Dan,
Did you do anything with your gibb adjustments? On mine the slot in the
gibb that the adjustment screw head rides in is wider than the screw head
and the gibb moves back and forth a bit everytime the axis changes
direction. Also there is no way to lock the adjustment down, so It wanders
around on it's own. I'm thinking about fabricating a screw clamp on the
opposite end of the gibb from the adjustment screw that would push the gibb
toward the adj. screw - I think that would lock everything in place.
I sure can see why this machine will benefit from ball screws. A couple
months ago I had .014 backlash on my X axis. last night I was checking it
out and the backlash is up to .017. The oil on the screw has a definite
bronze color so I'm guessing the nut is wearing away.

----- Original Message -----
From: "Dan Mauch" <dmauch@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Friday, March 16, 2001 10:37 AM
Subject: Re: [CAD_CAM_EDM_DRO] Dan Ms' Mill drill Re: GeckoDrives.. Servo
motor


> I was using maxnc4 deluxe.
> When I was preparing the x axis table for the ballscrew drive nut I
noticed
> that there was a tight spot on the X axis when the Gibb was adjusted to
the
> saddle and when the saddle was slid back and forth there was a noticeable
> tight spot in one location. So I used some non embedding lapping compound
to
> remove the tight spot. After it was removed I placed the table on my
milling
> machine and indicated the surfaces. It was generally within .001" which
> after seeing all the problem with poor pitch tolerances on the original
> leadscrews that this was about as good as I was going to get.
> Dan
> -----Original Message-----
> From: ballendo@... <ballendo@...>
> To: CAD_CAM_EDM_DRO@yahoogroups.com <CAD_CAM_EDM_DRO@yahoogroups.com>
> Date: Friday, March 16, 2001 5:10 AM
> Subject: [CAD_CAM_EDM_DRO] Dan Ms' Mill drill Re: GeckoDrives.. Servo
motor
>
>
> >Dan,
> >
> >What controller software?
> >
> >Ballendo
> >
> >P.S. On the subject of the mill/drill, I believe I remember you
> >saying you "lapped the ways" when you installed the ballscrews? How?
> >Did you scrape it also? Thanks in advance. Also, did you use a LH
> >ballscrew for Y axis, to preserve conventional handwheel direction?
> >
> >
> >--- In CAD_CAM_EDM_DRO@y..., "Dan Mauch" <dmauch@s...> wrote:
> >> The motors are rated at 420oz in. peak torque and 210 oz in
> >continuously.
> >> They are awesome on a mill drill with ballscrews. On my no name
> >imported
> >> mill/drill with ballscrews I get 180" IPM using those motors with a
> >2/1
> >> reduction. Dan
> >>
> >> -Dan
> >
> >
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