This is my first time cutting a gear of this size. First attempt didn't go so well. Cutting 4140HT, sent it out and had the hardness taken out of it. Got a new cutter (because the first attempt completely dulled it and left flat spots on the cutter) and was wondering what the appropriate spindle rpm would be best to use. I've tried all speeds from 40rpm to 100rpm at .002 for my chip load. Even then was getting a bunch of vibration and nothing I seemed to do was helping. The cutter I'm using is 5-7/8" outside diameter with 10 teeth, just HSS. Any info would be very helpful!
Thanks TJ
Thanks TJ