Folks,
I hope that this is the right forum to ask this question. We cut tubing (2in to 1in SS) using a laser and a rotary fixture. The controller is an Anorad II. I am still new to using this type of setup. But when we cut the tubing the distance we specify to travel around the tubes circumference (spinning the collet) does not equal the true circumference of the tube. If I tell it to rotate the tube a distance of 6.28318 (circumference of 2" tube) it will rotate 360 plus 1/4" or so. I cannot figure how the machine is calculating the distance. The encoder has 100 lines of resolution, and is attached to a 90:1 gear box. Any ideas on why things are not adding up. I hope I have explained what is happening well enough.
Thank you very much for the help!!!