The gripping pull-back action to actuate the collet chuck means the work piece will be moved slightly in the Z-Axis. This is normally acceptable for first operation work and the work piece position can easily be determined with a facing cut. The 5C a...
Gripper jaws can be a great way of getting round part movement in roughing operations, this is by use of teeth in the jaw which bite into the material. This biting can also be a great way to get round problems using black bar or other rough material....