Re: Backlash Fixes

Mr Wong,

Sure, let me explain it as best I can...

It's a small aluminum lever with its fulcrum mounted on an "L"
shaped bracket on the carriage. One side is pulled by a strong
tension spring.

The other side is attached to the cross-slide by a short cable.

Why so complicated? Well, regular tension springs don't deliver
constant force over their span. Instead of using 3" of travel on the
spring this gadget makes it 1/2" through the lever, so the force on
the slide is more consistent.

If you need a better picture, I can take one when I get home as my
lathe is apart right now for maintenance.

Dave Kowalczyk
Seattle WA
http://www.dakeng.com <--sorry about the plug, Bill!

--- In CAD_CAM_EDM_DRO@y..., ym_wong@p... wrote:
> --- In CAD_CAM_EDM_DRO@y..., dkowalcz@d... wrote:
> > When I got tired of tripping over the
> > cable I built this little gem, which accomplishes the same thing
> with
> > a tension spring and sits under the way cover. Sorry if you have
> to
> > crane your neck to figure it out - unusual camera angle eh? "
> >
> > Holds 0.0003" on a good afternoon, which is close enough in my
> > world... There's about 20 lb acting on the slide there, give or
> take
> > change.
> >
>
> Hi,
>
> However hard I tried to crane my head, I cannot figure out how you
> gadget works. Would you mind explaining its operation a bit? Thanks.
>
> ym