Re: [CAD_CAM_EDM_DRO] Re: Moog: Servo for Z?

blown_mgb_v8 wrote:

>Wasn't there a setup where the ballscrew was attached in place of
>the stop nut? Seems like I've seen that. My quill coupling yoke has
>a good sized lug on the front of it so that might be worth looking
>at too, although I don't know how it would be possible to get the
>parts in there close. The other thing is, although I don't really
>think it would take that large of a ballscrew to generate a 200 lb
>load, especially since it only has to travel about 5 inches, still
>there have been plenty of times when I've used the manual lever on a
>mill just because the feed clutch would kick out, so it might take
>as much as 500 lbs to give a good safety margin. But with that sort
>of a loading requirement, what sort of a servo would be needed?
>
>

Oh, well, if it is built like a Bridgeport, then that's what I did. In
fact it is what Bridgeport
does on their new Ez-Trak machines. See my web pages for some pictures :
http://jelinux.pico-systems.com/CNCconv.html next to the picture of the
whole head, there's
a link to "My Z-axis drive" with a set of pictures from different
angles. This drives the
quill by the hole where the stop ring goes, and attaches to the housing
by the holes that
the stop rod normally sits in.

Jon