kremlin
Plastic
- Joined
- Nov 28, 2019
Hi,
I have a Leblond Regal 15 built in 1969, with some issues.
The lathe is one of the servo-shift units. However, sometime between the summer of love and today, the servo shift function broke & was "fixed" by attaching the shifting gears to a linkage connected to exterior handles. Two handles, one shifts the rightmost larger gears between three positions and the other shifts the high speed gears between four positions.
After disconnecting the shifter unit on the top of the headstock gearbox, I have an issue with the four high speed modes: 654, 937, 1282, 1800 RPM. In these modes, especially 1800, I can easily stop the chuck with my hands, I am not getting the right torque. There is not even enough torque to bring the spindle up to the proper speed. I've checked, there doesn't seem to be an electric issue, my VFD reads 7.4 amperes output on power-on. I suspect the brake stuck engaged somehow. I am wondering if anyone might have an idea of what to try to rectify this. I'll attach some photos at the end of this post, but if there is something specific you'd like to see, let me know and I'll snap a photo and post it here.
Any help is extremely appreciated.
-Ian
I have a Leblond Regal 15 built in 1969, with some issues.
The lathe is one of the servo-shift units. However, sometime between the summer of love and today, the servo shift function broke & was "fixed" by attaching the shifting gears to a linkage connected to exterior handles. Two handles, one shifts the rightmost larger gears between three positions and the other shifts the high speed gears between four positions.
After disconnecting the shifter unit on the top of the headstock gearbox, I have an issue with the four high speed modes: 654, 937, 1282, 1800 RPM. In these modes, especially 1800, I can easily stop the chuck with my hands, I am not getting the right torque. There is not even enough torque to bring the spindle up to the proper speed. I've checked, there doesn't seem to be an electric issue, my VFD reads 7.4 amperes output on power-on. I suspect the brake stuck engaged somehow. I am wondering if anyone might have an idea of what to try to rectify this. I'll attach some photos at the end of this post, but if there is something specific you'd like to see, let me know and I'll snap a photo and post it here.
Any help is extremely appreciated.
-Ian