Punching and shearing machine with variable cutting angle

Details Punching and shearing machine with variable cutting angle Punching and shearing machine with variable cutting angle

1988-10-07

1990-09-25

Yost, Frank T.

Cutting

Means to drive or to guide tool

Tool pair positionable as a unit

83582, 83620, 836391, 83693, 83917, B26D 512, B26D 726

Patent

active

049585452

ABSTRACT:
The machine includes a supporting frame for a worktable through which a C-shaped head is vertically movable and is actuated by hydraulic means pivoted on the lower face of the worktable and is guided by a pair of vertical cylindrical and parallel columns, fixed to the worktable, and by a shaped slider arranged below the worktable, the upper wing of the head supporting two blades directed towards the worktable and mounted on two respective first upper sectors which both rotate scissors-like about a vertical axis, the worktable having horizontal lower counter-blades also supported by two second respective lower sectors which rotate about the vertical axis, there being means for connecting the first upper sectors and the second lower sectors during rotation and means for positioning and locking them once their position is reached, the head being furthermore controlled by adjustable elastic elements for adjusting the maximum value of force applicable to the first upper blades according to the thickness and to the mechanical resistance of the material being processed.

REFERENCES:
patent: 3958482 (1976-05-01), Claesson
patent: 3996829 (1976-12-01), Tromponi
patent: 4129054 (1978-12-01), Fazis
patent: 4172401 (1979-10-01), Terrado Albareda
patent: 4416176 (1983-11-01), Forthmann
patent: 4483227 (1984-11-01), Camisa
patent: 4535665 (1985-08-01), Fazis
patent: 4729273 (1988-03-01), Fazis
patent: 4771669 (1988-09-01), Bianchi

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