Originally Posted by
rwskinner
After the stepper loosens the drawbar what drives the drawbar down so the collet releases? Really, sounds plausable. The only two items I don't like about it is your using valuable pins for the stepper which I'd rather use for something else, then the other concern is knocking the collet loose.
I guess you could use an air cylinder to keep the stepper and socket pressed down on the drawbar so 1, it engages and 2, the cylinder causes the collet to break loose?
Richard