Dual action punch for use in a reciprocating operation capable o

Details Dual action punch for use in a reciprocating operation capable o Dual action punch for use in a reciprocating operation capable o

1991-10-03

1993-12-07

Watts, Douglas D.

Cutting

Means to drive or to guide tool

Sequential cutting motions

83 39, 83 54, 83588, 83601, B26D 310

Patent

active

052674975

ABSTRACT:
A dual action punch having two portions capable of performing scarfing and piercing respectively. The scarfing operation is accomplished by moving the punch in a direction tangential to the surface of the material so as to engage portions of the material which may extend from the major plane thereof, such as flanges. As the punch passes through a respective die opening formed in the lower die, the engaged portions of the flange are removed and the scarfing operation is complete. In this manner an opening is produced in the flange which corresponds to the shape and location of the punch as it is moved in the tangential direction. The piercing operation is accomplished by moving the punch in a direction orthogonal to a major plane of the material. As the punch passes through a respective die opening formed in the lower die, an opening is formed in the material which corresponds to the shape and location of the punch as it is moved in the orthogonal direction. The scarfing and piercing operation may be one continuous motion or each operation may be accomplished individually by modifying the stroke of the reciprocating press and/or the mechanism which generates the tangential and orthogonal motion of the punch.

REFERENCES:
patent: 4015496 (1977-04-01), Hill
patent: 4951538 (1990-08-01), Borzym
patent: 5038477 (1991-08-01), Parrow

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