Atlas 10" Handle Repair

wa5cab said:
OK. Worn out cross feed nuts are not uncommon. Worn out cross feed screws are often an indication of poor maintenance. Of course, as with the nut the only way to fix or improve it is replacement.
Click to expand...

I should've taken a picture of the lathe when I had first bought it. Everything was nearly locked up solid with rust and it had more play then I'd care to mention. My tear down of the machine indicated poor maintenance also. The cross feed nut was something like .100 play. Meaning I turn the knob and it rotates .100 before I had movement across the slide and the compound was .250 give or take. My fix considering the screws where heavily worn was to set it at the most worn area and heat the nut with a O/A torch and let it reshape to the smallest part. It worked fairly well I now have less then .020 on my compound and less then .010 in the cross slide. But they still need replacement. As soon as I get my QCGB up and running I will be making new screws.


Regards-Carlo
 
Greetings;

I repaired 3 handwheels in various fashion...used some JB-Weld to join the parts. See if you can identify the type/method of repairs made!
Lou O.

handwheel_repairs.jpg
 
Carlo,

Don't forget that there are three sources of apparent back lash in the cross-feed and compound feed. Thread wear in the nut (most common), thread wear on the screw (less common) and end float in the lead screw (almost always adjustable to near-zero. Before starting to determine whether you have the first two problems, you should always run the nut off of the screw and check and if necessary adjust the screw end float. It is virtually impossible to determine thread wear until you know that you have no end float.
 
End float has been set to near zero. I have to lap in the bearing housing/screw housing and the dials as I have high lows in them also.


Regards-Carlo
 
You must log in or register to reply here.
Back
Top