All,
Thank you for your suggestions and help. I was finally able to "tune" my servos in torque mode. I have attached some pictures of my tuning for both my X and Y axis. Problem: I machine a rectangle at 50 ipm - the rectangle comes out correctly. I even did this under load by taking a .05" DOC pass using a .75" cutter. The rectangle cut just fine at 50 IPM. If I turn the feedrate up to 100 ipm then the result on the mill looks like a parallelogram (about 15 degrees off normal). You can see where the Y axis starts moving before the X gets all the way to the end of the rectangle. I did a stress test going back and forth in the X axis to see if I was loosing steps, and I didn't see any indications of loosing steps on my dial indicator. I would like to be able to run at 150 ipm on this mill. I have 2000 ppr encoders. Any suggestions?
Also, if anyone has any tuning tips I'm willing to learn. This is my first time tuning a system, and when I was reading I heard that you can get it to be +- one encoder count. Right now I'm at +-12 counts.
Thank you for your help!
Sincerely,
Dave