micro-controller based dividing head

[EclecticNeophyte]

Here's my latest homemade tool...just finished the wiring and testing today. It's a dividing head, using a NEMA 23 stepper motor, coupled to a ER20 collet chuck via timing pulleys and belt. The ER20 is mounted in a couple of sealed ball bearings, that are in turn pressed into a 3" x 3" x 5" block of aluminum. The stepper is capable of 400 steps (0.9 deg/step), with a 4:1 ratio on the timing pulleys. This results in a maximum resolution of 1600 divisions...




I plan to use this dividing head, to cut spur gears and timing pulleys for other projects.

-EN