Lathe Cross Slide Problem

[EdK]

(04-21-2014, 06:58 AM)PixMan Wrote: Is that bushing pressed into a counterbore with a specific depth?

If so it seems to me that the best thing to do would be to get the bushing out, mill the opening square and parallel, them make a new bronze split nut to fit the screw at the correct centerline height which has a mating square on it.

What size thread is on the screw? Looks like 1/2"-10 Acme?

Ken,

No, the bushing is not pressed into a counterbore. It's just a straight bushing that's knurled and pressed into a hole.

I was thinking of pressing that bushing out and putting a counterbore on the top side of the cross slide and making a new bushing to press in. With the bushing pressed into the cross slide I would then mill the slot in the bushing on the underside thus assuring the slot is at a reasonably accurate right angle to the lead screw for mounting the nut.

I was also thinking of making a new nut since the existing one is not made very well and is made out of brass rather than bronze. What type of bronze would you suggest?
Any reason, design wise, not to make the new one the same as the old except machined better or is there a better design that you would recommend?

The lead screw has a major diameter of about .55" and the dimension between threads is about .12" so I'm assuming it's a 14mm x 3mm trapezoidal thread.

Thanks for the help.

Ed