Re: [CAD_CAM_EDM_DRO] Limit and Homing switches Over 2200 memberstoday

Just an unique solution found a guy in Germany. He mounted cams on the
ends of the ballscrew.(30°step up). This way he was able to use a
relatively cheap micro switch (tolerance 0,1mm =0,004") and anyway he
got excellent accuracy because of the multiplying factor of the turn of
the screw.
Just an idea I got convinced of immediately.
Good Luck
Sven Peter

(not always OT - and not at all wanting to insult anybody)
wanliker@... wrote:

>
> I am converting an EMCO COMPACT 5PC lathe to more modern drives, G-320, with
> servos, instead of the old steppers.
> I have now come to the part where i have to think about Limit, and Home
> switches.
> Has anyone on the list got the answers to what I should use. This is a 5 x
> 12 lathe so something bit would be very hard to mount and use.
>
> So any suggestions, and part numbers would be welcome, with the emphasis on
> small, being a high priority.
>
> I have noticed on several surplus, (not lathes,) that they are using optical
> switches, any comment on repeatability and how to tie them into the system?
>
> Help,
> bill
>
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