RE: [CAD_CAM_EDM_DRO] Stepper motors for mill/drill & source of supply?

Last project I did with the 5/8" McMaster ballscrews I tried a different
method on the ends that worked real well and save on the cost of the screw
material. Instead of machining the screw down to the diameter I needed, I
bored the screw out to just over 3/8". I machined my shaft end and left it
with a 3/8" stub on the end to connect to the screw. Coated the stub and the
hole in the screw with flux and sweated the joint with some 1100 deg F
silver solder that is easy to flow. Checked the alignment of the ends and it
only had about .005" of runout which was fine for my project.

Tim
[Denver, CO]

> Yes. Machining the ends can be difficult depending on which ballscrew you
> end up with. Some brands are really hard and you need to cut the ends with
> low speed and enough feed to get under the harden material. On many
> occasions I have heated the ends to be machined to a straw color and and
> then let them slowly air cool. This seems to also help. But some have been
> so hard the only way to machine them was to grind them with my toolpost
> grinder.. Generally when you get to the root diameter they are relatively
> soft under that. So I generally machine the ends to .417 and stub them to
> 17mm which is what the original shafts were.
> Dan
> FAQ: http://www.ktmarketing.com/faq.html
>