Patent ID: 8152052
Filing Date: 2012-04-10
Classification: B21D,Y10T

Abstract:
1. A method of adjusting the punch length of a two-part punch, said method comprising the steps of, providing a punch carrier adapted to be placed in a punch press that has a punch ram for imparting movement to a punch within said punch carrier for carrying out a punching or forming operation, providing at least one punch that is mounted for reciprocating movement within the punch carrier to engage a workpiece when in an operating position, providing each such punch with two components including a punch driver component at an upper end thereof and a punch head component at a lower end that is connected by screw threads to the punch driver to permit adjusting the length of the punch, providing a key on each component and at least one key slot in the punch carrier for each key, supporting the at least one punch in the punch carrier to enable the punch to be lifted for removal in an upward direction, lifting the punch at least partially out of the punch carrier with the key of the punch driver lifted out of the slot thereof in the punch carrier, turning the punch driver while the punch head remains stationary with the punch head key engaged in said key slot to thereby manually adjust the punch length whereby punch length adjustment can be accomplished by an operator without the use of any hand tools.