Abstract: A trimming press working apparatus 1 includes a trimming means 6 for cutting a plate material 2 along a trimming line 5 which divides a product portion 3 from a non-product portion 4 in the plate material 2; a scrap cutting means 9 for cutting the non-product portion 4 along scrap severing lines 7 each intersecting the trimming line 5 to make the non-product portion 4 into a plurality of scrap pieces 8; and a pad 10 for pressurizing and restraining the product portion 3 of the plate material 2.

Abstract: A trimming press working apparatus 1 includes a trimming means 6 for cutting a plate material 2 along a trimming line 5 which divides a product portion 3 from a non-product portion 4 in the plate material 2; a scrap cutting means 9 for cutting the non-product portion 4 along scrap severing lines 7 each intersecting the trimming line 5 to make the non-product portion 4 into a plurality of scrap pieces 8; and a pad 10 for pressurizing and restraining the product portion 3 of the plate material 2.

Abstract: A hemming apparatus (1) includes a holder unit (2), a lower die (3) on which the holder unit (2) is installed, and an upper die (4) which is installed on the lower die (3) vertically movably. The holder unit (2) includes a base (5) secured to the lower die (3) by means of bolts or the like; a working tool holder (7) which is rotatably supported on the base (5) so that a hemming punch (6) can be disposed at a nonworking position and a working position; and a resilient means (8) for resiliently urging the working tool holder (7) so as to dispose the hemming punch (6) at the nonworking position.

Abstract: A hemming apparatus (1) includes a holder unit (2), a lower die (3) on which the holder unit (2) is installed, and an upper die (4) which is installed on the lower die (3) vertically movably. The holder unit (2) includes a base (5) secured to the lower die (3) by means of bolts or the like; a working tool holder (7) which is rotatably supported on the base (5) so that a hemming punch (6) can be disposed at a nonworking position and a working position; and a resilient means (8) for resiliently urging the working tool holder (7) so as to dispose the hemming punch (6) at the nonworking position.

Abstract: A cam apparatus includes: a cam driver having a sliding surface with a V-shaped cross section; a cam slide having a sliding surface of a shape complementary to the sliding surface of the cam driver in such a manner as to be slidably brought into contact with the sliding surface of the cam driver; and a cam-slide supporting base for movably supporting the cam slide so that the cam slide can move while being guided by the sliding surface of the cam driver as the sliding surface of the cam slide and the sliding surface of the cam driver are brought into contact with each other. The cam slide is disposed with a gap with respect to the cam-slide supporting base.

Abstract: A cam (1) for a press die comprises: a movable cam slide (3) having a cam slide (3) which has a cam surface (2) and is movable in an X-direction; a cam driver (4) for moving the cam slide (3) in the X-direction by abutting against the cam surface (2) of the cam slide (3); and a returning spring (5) for returning the cam slide (3) to its original position. The returning spring (5) is disposed in a bottomed hole (11) formed in the cam slide (3) and whose one end (41) abuts against a main body (12) of the cam slide (3) in the bottomed hole (11), a holder (43) holds the coil spring (42). The holder (43) is provided with a rod (45) which is slidably passed through a through hole (44) and extends through the bottomed hole (11) in such a manner as to be surrounded by the coil spring (42); and a spring seat (48) which is provided in threaded engagement with one end portion (47) of the rod (45) at a bottomed-hole (11) side so as to receive another end (46) of the coil spring (42).

Abstract: A pressing cam die includes a cam slide having a cam surface; a supporting device for supporting the cam slide onto an upper die such that the cam slide is movable in a downwardly inclined direction; a coil spring for urging the cam slide toward its initial position; and a cam driver having a cam surface which is slidably brought into surface contact with the cam surface of the cam slide. The supporting device has a base and a round guide bar which is attached to a front wall portion and a rear wall portion of the base. The coil spring is wound around the guide bar and is disposed concentrically with the guide bar.