Drive device for setting angular position of pendulum cutter blade has one or more electric motors connected to lower blade via threaded spindle

摘要

The drive device has upper and lower blades (4,3) mounted so as to pivot about a common pivot point and to be driven into their angular positions by the drive device. The drive device consists of one or more electric motors (6,7) connected to the lower blade via a threaded spindle (8,9). Where two or more motors are used with corresponding threaded spindles, one is a master and the other(s) a slave(s).