texasgeartrain
Titanium
- Joined
- Feb 23, 2016
- Location
- Houston, TX
With rke[pler informing me on the cross slide lock for T/A, and then Cal showing me his link on the crossfeed nut here:
https://www.practicalmachinist.com/vb/monarch-lathes/adjusting-10ee-crossfeed-screw-backlash-172175/
. . .well designs are similar between my series 61 and what a lot of you guys use on a 10ee.
One thing bothers me a bit. I'm not in love with basically using a jacking screw to bend or distort the cross feed nut to try to adjust any slop.
The length of these nuts are pretty significant. Why not try to create a 2 piece nut ? Then adjust where crossfeed screw is wore least. Even with a freshly cut nut I'd guess at least a couple thousandths play where CF screw is wore least. And gradually get worse, over maybe a short time period.
Off the bat, let me say I'm not ready today. Probably need a month or a little more. Need to finish another project first. Then I need to go through my T/A and install it. With that done, I think I can get a better idea of travels, measurements, and such. Right now, I just want to roll the idea around and get some thoughts.
Looking at the nut off the 61 series, the hole with yellow paint is the oil passage for CF screw. The dotted line is crossing the hole where jacking screw is currently used to force nut down on adjustment.
Instead of using that jacking bolt hole to jack. . . Imagine slicing the nut in half, directly on that hole. Now two nuts. And now jacking bolt is used as a wedge to drive the two nuts apart.
It does not necessarily have to be THIS exact nut. I could make two new nuts closer to equal length. However the nut taking the most work will be driving into work. . .
https://www.practicalmachinist.com/vb/monarch-lathes/adjusting-10ee-crossfeed-screw-backlash-172175/
. . .well designs are similar between my series 61 and what a lot of you guys use on a 10ee.
One thing bothers me a bit. I'm not in love with basically using a jacking screw to bend or distort the cross feed nut to try to adjust any slop.
The length of these nuts are pretty significant. Why not try to create a 2 piece nut ? Then adjust where crossfeed screw is wore least. Even with a freshly cut nut I'd guess at least a couple thousandths play where CF screw is wore least. And gradually get worse, over maybe a short time period.
Off the bat, let me say I'm not ready today. Probably need a month or a little more. Need to finish another project first. Then I need to go through my T/A and install it. With that done, I think I can get a better idea of travels, measurements, and such. Right now, I just want to roll the idea around and get some thoughts.
Looking at the nut off the 61 series, the hole with yellow paint is the oil passage for CF screw. The dotted line is crossing the hole where jacking screw is currently used to force nut down on adjustment.
Instead of using that jacking bolt hole to jack. . . Imagine slicing the nut in half, directly on that hole. Now two nuts. And now jacking bolt is used as a wedge to drive the two nuts apart.
It does not necessarily have to be THIS exact nut. I could make two new nuts closer to equal length. However the nut taking the most work will be driving into work. . .