Froneck
Titanium
- Joined
- Dec 4, 2010
- Location
- McClure, PA 17059
I have a Jacobs #91 Rubber Flex collet chuck with D1-6 back plate. Works great Butt!! During use it works OK, work diameter is small and in current work being turned it's 5/8" so spindle speed is high though 1000 RPM is machine limit. Also does the same on other lathes. As I mention all works great until I stop the machine, lathes all have clutch/brake control so they are not motor switched on/off. Often when putting the clutch in neutral the locking wheel will reverse and unscrew the collet nose cup. If I do nothing the nose cup will fall off, collet and work then falls out too. Locking ring is in but when the hammer wheel reverses due to deceleration the pin (I assume) pushed the ring off the the lock grove and loosens the collet nose.
I removed the 2 piece snap ring, pin dropped in the chips so I'm cleaning the lathe to find it. Lock ring fits well, all detente buttons are in and springs feel strong, without the pin that in the chips the ring seems to fit snug in the locked position, lock groove edge is square with no sign of wear. All holes for the lock pin are round with no sign of wear and before the pin dropped it too looked in good shape.
Any Ideas as to why I'm having problems? To correct the problem?
I removed the 2 piece snap ring, pin dropped in the chips so I'm cleaning the lathe to find it. Lock ring fits well, all detente buttons are in and springs feel strong, without the pin that in the chips the ring seems to fit snug in the locked position, lock groove edge is square with no sign of wear. All holes for the lock pin are round with no sign of wear and before the pin dropped it too looked in good shape.
Any Ideas as to why I'm having problems? To correct the problem?