Re: Ball screws

Trevor,

I uploaded the .SAT 2.0 file and .DWG Acad14 files as zipped files to
the files section. Look under Drill 2HP model folder. The 4 axis
file is not mine - don't know how it got into the folder I just
created.
Before trusting my dimensions, check your machine before cutting
parts. I used a tape measure for the larger parts during modelling,
so 1/16" accuracy. Also, these machines may vary slightly during mfg.

Allan

--- In CAD_CAM_EDM_DRO@y..., tbrooking@s... wrote:
> I am intersted in your modeling of the screw components. I am
> currently using autocad r14 for my cad work, if you could e-mail me
> the files in a format supported by autocad r14 that would be great.
>
> Thanks
>
> Trevor
> --- In CAD_CAM_EDM_DRO@y..., allan_r9@h... wrote:
> > Hello,
> >
> > I too am shopping for ball screws to convert my GEM500 to CNC, so
> I'm
> > interested in the same answers you get. I did convert an Enco
> > Mill/Drill (2HP version) to 3 axis CNC using Kerk Motion Products
> > zero backlash nuts and screws (not ball screws). I wish I had
gone
> > for the ball screws now. I have all the pertinent components
> > modelled in 3D solids. If you would like the file, let me know
what
> > solids format you can use. The Mill/Drill started with Ah-ha
> control
> > and Gecko G201 drives with 3 Sanyo-Denki 720oz/in motors, then I
> > bought the BDI disk from Paul at the NAMES 2001 show, and got the
> EMC
> > control working. It runs much smoother than the Ah-ha control.
> The
> > EMC system will be used for the GEM500 conversion which will be a
5
> > axis machine. The 3d model for this machine with 5 axis trunnion
> > will be placed on the files list soon.
> >
> > Allan
> >
> > --- In CAD_CAM_EDM_DRO@y..., tbrooking@s... wrote:
> > > I am new to this group and have found it very informative. I
> have
> > > some questions about using ball screws on a Enco style mill
> drill.
> > > My intention is eventually convert it to cnc. First, of the
> people
> > > who have replaced lead screws with ball screws on a mill drill,
> > what
> > > size, lead, and grade of screw did you select and why? Did you
> > > calculate the maximum axial load the screw would be subject to
> > during
> > > milling or drilling? Where did you get the ball screws from
and
> > how
> > > much were they (US dollars)? Was there any modifications you
> made
> > to
> > > the machine to allow you to fit and use ball screws? All input
> on
> > > this subject as well as converting a mill drill to cnc will be
> > > greatly appreciated.