Re: [CAD_CAM_EDM_DRO] Re: Z axis conversion

> Joe Vicars wrote:
> > In my opinion, gentlemen (and ladies) the "knee" will not make a
> > good "Z". The quill bolt ons I agree aren't great, but you get to
> > messing with that knee and you'll regret it. There is a bevel
> reduction
> > gear in there (that's about 2:1) so there is some backlash. Even
> though
> > I think Smoke is right about not needing a anti-backlash nut. So,
> you
> > have to get all that out of there and fit a motor up inside the knee
> > somehow? I don't think so.
> > Not to mention you have to move 3 big castings, the knee, the
> table,
> > and the saddle. All together 500 pounds at least! Crank on that
> knee
> > up and down several times a day, it's a good workout. You're going
> to
> > put an awful load on any reasonable sized motor.
> > The Knee Way? No way!!!!
>
> Wally K. replys
>
> First if i was going to power the knee i would do it like the X and Y
> axis and mount the motor were the hand wheel goes.
>
> Second i am worried about "sticktion" of the knee. I remember now,
> somtimes when i crank it down quickly it will jump a little. what
> happens is as the backlash is taken out the screw pulls on the knee
> and the knee falls with a clunk.
>
> Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the discussion of shop built systems, for CAD, CAM, EDM, and DRO.
>
> Addresses:
> Post message: CAD_CAM_EDM_DRO@egroups.com
> Subscribe: CAD_CAM_EDM_DRO-subscribe@egroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@egroups.com
> List owner: CAD_CAM_EDM_DRO-owner@egroups.com, wanliker@...
> Moderator: jmelson@... [Moderator]
> URL to this page: http://www.egroups.com/group/CAD_CAM_EDM_DRO
> FAQ: http://www.ktmarketing.com/faq.html
> bill,
> List Manager