Patent ID: 6755110
Filing Date: 2004-06-29
Classification: B21D,Y10T

Abstract:
An adjustable length punch assembly for use with a punch press having a ram, comprising:a punch body assembly disposed in threading engagement with a drive body assembly; a lock mechanism for selectively preventing rotation of the punch body assembly relative to the drive body assembly; the lock mechanism comprising a lock shaft coupled to one of the bodies and a lock key slidingly coupled to the other of the bodies; the lock shaft having a plurality of teeth and the lock key having a toothed surface moveable into engagement with and disengagement from the lock shaft in response to non-axial movement of the lock key to enable and prevent, respectively, relative rotation between the punch body assembly and the drive body assembly; and wherein the lock key includes an exteriorly accessible pushbutton movable axially toward the axis of the punch assembly to disengage the toothed surface from the lock shaft.