Patent ID: 7080586
Filing Date: 2006-07-25
Classification: B23D,Y10T

Abstract:
1. A die set comprising: an upper die having a downward stroke and an upward stroke; a lower die cooperating with said upper die; first, second and third cam drivers which are spaced apart depending from said upper die and extending toward said lower die; said second and third cam drivers being spaced inwardly from said first cam driver; said cam drivers each having on one edge a cam surface; a work station in said lower die for receiving a tube; a laterally moveable cutter holder and cutter at said work station which are moveable relative to an end of the tube; said cutter holder movable in a forward direction and in a rearward direction relative to the tube; said movable cutter holder having first, second and third cam surfaces thereon which are engageable respectively by said first, second and third cam drivers during the downward stroke of said upper die; the cam surface of said first cam driver when said upper die is moving through a downward stroke, engaging the first cam surface on said cutter holder and thereby moving said cutter holder towards the end of the tube at the work station where said cutter enters the end of the tube; said second cam drivers during the continuing of the downward stroke of said upper die engaging the second cam surface of said cutter holder to drive said cutter holder in the forward direction to cut and thereby form one side of the end of the tube; said third cam driver during the continuing of the downward stroke of said upper die thereafter engaging the third cam surface of said cutter holder to drive said cutter holder in the rearward direction to cut and thereby form the other side of the end of the tube; said second cam driver during the upward stroke of said upper die reengaging the second cam surface of said cutter holder to drive said cutter holder in the transverse forward direction without cutting the tube until said second driver clears the second cam surface of said cutter holder.