Blanking machine for blanking holes in sheet of metal

Details Blanking machine for blanking holes in sheet of metal Blanking machine for blanking holes in sheet of metal

1979-07-10

1980-12-30

Yost, Frank T.

Cutting

Means to drive or to guide tool

Tool pair positionable as a unit

83 34, 83217, 83558, 91167R, 91170R, B26D 504

Patent

active

042416329

ABSTRACT:
A blanking machine for blanking holes in a sheet of metal in a zigzag fashion comprising a bolster, a pair of rails, fixedly secured to the bolster extending in a direction right angles to the feeding direction of the sheet of metal to be blanked, a lower die set slidably mounted on the rails, a die fixedly secured to the lower die set, an upper die set having a punch mounted thereon opposite the die, the upper and the lower die sets being coupled together, a hydraulic cylinder having a plurality of pressure chambers formed therein, a transmission mechanism connected to a piston rod of the hydraulic cylinder, and a connecting rod for connecting the transmission mechanism to the upper or lower die set.

REFERENCES:
patent: 2761473 (1956-09-01), Denton
patent: 3712161 (1973-01-01), Valente
patent: 3738227 (1973-06-01), Bitzer et al.
patent: 3762260 (1973-10-01), Taniguchi
patent: 3785235 (1974-01-01), Peddinghaus et al.

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