RE: [CAD_CAM_EDM_DRO] Re: fitting ballscrew ends

Dave,

Exactly. Spend the money on tools.

What I was trying to do was create a system where you WON'T be machining
screws or worrying about spindle bores. You just make the end attachement
from soft steel on the chuck or between centers.

As mentioned for me machining the actual ballscrew is not a problem. But
I would be hard pressed to offer this for a lot less than anyone else.
If I could I would.

If folks like Marcus and myself can figure out a procedure for these
things so home shop machinists can make accurate BS ends I can try
and write something up. Give us a little time though...this is
pro buono.

Leslie M.Watts
L M Watts Furniture
Tiger Georgia
(706) 212-0242

Main page:
http://www.lmwatts.com
Engineering:
http://www.lmwatts.com/shop.html
Cnc surplus for sale:
http://www.lmwatts.com/forsale.html
Carved signs:
http://www.lmwatts.com/signwp.html


-----Original Message-----
From: CAD_CAM_EDM_DRO@yahoogroups.com
[mailto:CAD_CAM_EDM_DRO@yahoogroups.com]On Behalf Of turbulatordude
Sent: Saturday, June 11, 2005 11:07 AM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: [CAD_CAM_EDM_DRO] Re: fitting ballscrew ends


--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Leslie Watts" <leswatts@a...>
wrote:

> Marcus,
>
> I think the cnc hobbyist would be reluctant to pay even $50/end for
> end machining of his surplus ballscrews. That's $300 for an xyz
> machine.(feel free to correct me on that :) )
>
> So he would want a way to make his own accurate ends on a
> HF mini lathe or something.
>
> He could have the enjoyment of turning these end caps
> in his own shop.

Here is the problem. A HF mini-lathe costs around $400, Homier sells
them for $299, so IF one could use the mini-lathe for $300, most would
much rather add the tool than pay others that same $$ to get a
machined part. Besides, the lathe is so darn useful for so many other
things.

But, most of us do not have a clue how to indicate or center a ball
screw in such a machine.

The 7x10 as well as many 9x20 lathes have a 3/4" bore in the spindle,
so there is a limit to the size screw one could do on these machines
as well.