Threading at 1500 RPM- Acorn CNC conversational threading test with DMM servos.
The machine is a Jet GHB 1340a that has been converted to CNC, using DMM Dyn2 servos and drives, ground ballscrews. I recently upgraded it to an Acorn controller.
I added a Omron 2000 ppr encoder with 3d printed gears to avoid plugging the back end of the spindle:
I previously used Mach 3 and 4 and the Acorn is such a massive improvement.
As an instructor at a small non profit teaching facility, the Bainbridge Barn, we are adding a slant bed lathe from dynamics and liked the Acorn so much, we are retrofitting it with a second Acorn to replace the aged Fagor control.