Clough42 ELS for PM1127

thingiverse

These are some brackets and adaptors to fit the Clough42 electronic leadscrew motor and rotary encoder to a Precision Matthews PM1127 lathe. Instead of using timing pulleys and belts like James did, I've opted to reuse the gears that came with the lathe as well as the original change gear banjo. For the encoder, the40 tooth gear on the spindle drives the 60 tooth change gear, which is coupled with the 30 tooth gear. The 30 tooth gear then drives the 20 tooth gear that's attached to the spindle of the encoder. This provides an overall 1:1 gear ratio between the spindle and the encoder. The encoder I am using is an OMRON E6B2-CWZ6C. The encoder is attached to the bracket with M3 screws. The motor I'm using has a NEMA23 face plate. It drives the 25 tooth gear which meshes with the 75 tooth gear that's on the lead screw shaft for a 1:3 gear ratio. The motor is attached to the backet using #10-32 screws and hex nuts. Both brackets are attached to the banjo with 5/16"-18 x 1.5" socket cap screws and threaded plates in the channel on the backside of the banjo. Also included are adaptors to fit change gears to the motor and the encoder as well as a box that can house the PCB-based control panel plate that James includes in his kit. The brackets need to be printed with supports for floors of the counterbores that the 5/16" socket cap screws go into.