The present invention increases the positional accuracy of a floating cutter unit with respect to a press upper die for main trimming. A floating cutter unit is provided with: a floating cutter for cutting scrap from a plate-shaped material, said floating cutter being attached to and used in a trimming press processing device that cuts scrap from a plate-shaped material along a trim line Tr and that additionally cuts scrap along a scrap cut line Sc; a spring that is brought into contact with the tail end surface of the floating cutter and with a holder set for holding the floating cutter so as to be movable in the direction of an axial center O, and that applies reaction force to the floating cutter; and a guide member that is attached to the holder set, brought into contact with the floating cutter, and used to guide movement in the direction of the axial center O.

The present invention increases the positional accuracy of a floating cutter unit with respect to a press upper die for main trimming. A floating cutter unit is provided with: a floating cutter for cutting scrap from a plate-shaped material, said floating cutter being attached to and used in a trimming press processing device that cuts scrap from a plate-shaped material along a trim line Tr and that additionally cuts scrap along a scrap cut line Sc; a spring that is brought into contact with the tail end surface of the floating cutter and with a holder set for holding the floating cutter so as to be movable in the direction of an axial center O, and that applies reaction force to the floating cutter; and a guide member that is attached to the holder set, brought into contact with the floating cutter, and used to guide movement in the direction of the axial center O.

A guide pin assembly for metal forming dies includes a cylindrical guide pin body with an external retainer groove adjacent one end thereof in which a retainer ring is received. An annular guide pin ring with an outside diameter greater than the pin body, has a counterbore adjacent the outside end thereof and a retainer groove in a medial portion thereof which receives the outer portion of the retainer ring to securely interconnect the pin body and the ring and thereby form an enlarged head at one end of the pin body which positively limits reciprocal motion between two associated die members. A circular guide pin head cap covers the outer end of the head ring, and includes a support collar that is closely received in the counterbore of the ring, and engages the retainer ring to securely hold the same in place.

A guide pin assembly for metal forming dies includes a cylindrical guide pin body with an external retainer groove adjacent one end thereof in which a retainer ring is received. An annular guide pin ring with an outside diameter greater than the pin body, has a counterbore adjacent the outside end thereof and a retainer groove in a medial portion thereof which receives the outer portion of the retainer ring to securely interconnect the pin body and the ring and thereby form an enlarged head at one end of the pin body which positively limits reciprocal motion between two associated die members. A circular guide pin head cap covers the outer end of the head ring, and includes a support collar that is closely received in the counterbore of the ring, and engages the retainer ring to securely hold the same in place.

A press working apparatus includes: a first positioner that is provided to at least one press of a first press or a second press and that performs positioning of at least one die of the at least one press; and a second positioner that performs positioning of the at least one die and that positions the at least one die in a position deviated in a feeding direction with respect to the first positioner.

A press working apparatus includes: a first positioner that is provided to at least one press of a first press or a second press and that performs positioning of at least one die of the at least one press; and a second positioner that performs positioning of the at least one die and that positions the at least one die in a position deviated in a feeding direction with respect to the first positioner.

The tooth part includes: a tubular portion having an inner tooth portion formed on an inner peripheral surface and an outer tooth portion formed on an outer peripheral surface; a plurality of inner peripheral wall portions that each extend in an axial direction of the tubular portion and form a tooth tip portion of the inner tooth portion and a tooth bottom portion of the outer tooth portion; a plurality of outer peripheral wall portions that each extend in the axial direction and form a tooth bottom portion of the inner tooth portion and a tooth tip portion of the outer tooth portion; and an annular rib that is joined to the outer peripheral wall portions and that extends in an annular shape on an open end side with respect to the inner peripheral wall portions in the axial direction and radially outward from the inner peripheral wall portions, at an open end of the tubular portion.

A bi-directional and double-punch balanced high-speed bodymaker includes a punch driving mechanism and blank pressing mechanism, wherein: the punch driving mechanism includes a crankshaft, two identical connecting rods, slide rails, sliders and punches. The crankshaft is rotationally supported by a bearing, and the crankshaft has a first crank, second crank and first and second blank pressing cams. Compared with the prior art, the swing lever and secondary connection are removed from each set of punch driving mechanism, simplifying the structure while maintaining all original functions, constituting omitting elements. It adopts two blank pressing cams and arranges the first blank pressing cam driving point of the opposite the second blank pressing cam driving point, and finally, the directions of the first and second torque are opposite and counteract each other, to maintain balance of overall torque on the plane passing the crankshaft axis during the operation of the bodymaker.

A tool for forming an attachment pad on a sheet material includes an anvil supported on a housing and defining a working axis for forming the pad. A slide block is supported on the housing for movement at least along the working axis, and a die block is supported opposite the slide block and is movable in directions along the working axis to cooperate with anvil to form the pad. At least one actuator on the housing biases the slide block in a direction toward the die block. The actuator is operable in a first mode wherein the slide block is movable toward and away from the die block, and a second mode wherein the slide block is locked against movement in a direction away from the die block. A selectively adjustable counterbalance device cooperates with the actuator to counterbalance a force applied to the slide block by the actuator.

A tool for forming an attachment pad on a sheet material includes an anvil supported on a housing and defining a working axis for forming the pad. A slide block is supported on the housing for movement at least along the working axis, and a die block is supported opposite the slide block and is movable in directions along the working axis to cooperate with anvil to form the pad. At least one actuator on the housing biases the slide block in a direction toward the die block. The actuator is operable in a first mode wherein the slide block is movable toward and away from the die block, and a second mode wherein the slide block is locked against movement in a direction away from the die block. A selectively adjustable counterbalance device cooperates with the actuator to counterbalance a force applied to the slide block by the actuator.