Punch press

Details Punch press Punch press

1980-05-14

1982-08-10

Yost, Frank T.

Cutting

With control means responsive to replaceable or selectable...

83552, 83618, 83640, 72 23, 72442, B26D 508

Patent

active

043432107

ABSTRACT:
A punch press having a punch holder and a die holder rotatably mounted on vertically spaced upper and lower plates, respectively. A punch and the corresponding die are held in the punch and die holders, respectively, for rotation therewith. The punch is cooperable with the die to machine the workpiece positioned therebetween when a predetermined angular attitude of the punch relative to the die is maintained. A detector is provided for checking whether the predetermined relation in angular attitude between the punch and the die is maintained when they are in their home positions and when they are angularly displaced from their home positions. Preferably, the upper and lower plates are arranged into upper and lower turrets rotatably holding a plurality of circumferentially spaced punch and die holders, respectively.

REFERENCES:
patent: 2363208 (1944-11-01), Sulzer
patent: 3230806 (1966-01-01), Rovoldt
patent: 3716716 (1973-02-01), Marantette et al.
patent: 3839937 (1974-10-01), Memain
patent: 3892158 (1975-07-01), Smeets
patent: 4220062 (1980-09-01), Blanz

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