Patent Number: 6,305,209

Title: Workpiece blanking apparatus

Abstract: A workpiece blanking apparatus has a die, a pad for holding a plate of metal on the die, a blanking punch for depressing the plate on the die downwardly of the die to blank a workpiece out of the plate, and a counterpunch vertically movably disposed in the die in confronting relationship to the blanking punch and movable downwardly with the workpiece blanked by the blanking punch. A counterpunch urging device normally urges the counterpunch upwardly, and a holding mechanism holds the counterpunch in a lowered position after the workpiece is blanked by the blanking punch until the blanking punch is spaced from the workpiece, the pad is spaced from the plate, and the blanking punch and the pad are lifted to a predetermined position. The holding mechanism releases the counterpunch in the lowered position and allows the counterpunch to displace the workpiece out of the die when the blanking punch and the pad are lifted to the predetermined position.

Inventors: Suzuki; Tetsuo (Sayama, JP), Kobayashi; Makoto (Sayama, JP)

Assignee: Honda Giken Kogyo Kabushiki Kaisha

International Classification: B21D 45/00 (20060101); B21D 028/02 (); B21D 045/04 ()

Expiration Date: 10/23/2018