Sheet slotting punch lift control centers round sleeved excentric bolt turn angle off servomotor under machine control appropriate to operating stage.

摘要

A servomotor (15) turns the angle of the excentric bolt (13) and bush (26) in such a way that this angle of turn is controlled by the machine itself as a function of the particular operating situation. In intermittent punching routine the angle of turn is governed by the plate thickness (34) or again the angle of turn of the excentric (13,26) selected so as to afford maximum punch lift once a plate in inserted or removed. The machine controls process signals from the path and thickness measuring systems (22) and servomotor (15) and bolt (13) have interposed movement transmission systems.