Method of manufacturing a punching die

Details Method of manufacturing a punching die Method of manufacturing a punching die

1978-04-03

1980-04-22

Yost, Frank T.

Metal tools and implements, making

Blank or process

Die

83690, B21K 520

Patent

active

041988841

ABSTRACT:
A punching die which may be economically produced is disclosed herein. The die is reinforced by superimposing hard thin plates thereon. The punching die is composed of a die body soft enough to be machined and a thin plate, single or plural, which is harder than the die body. The plate has a hole coinciding with a configuration of a product to be punched. The superimposed plate is characterized in that it remains after a product has been punched out from said thin plate by the die body and the punch. The punching die may be easily operated during production. The procedure involves only slight abrasion of the shape. The device is highly durable and precise and operates without causing curvature in the product. Thus, it is suitable for mass production.

REFERENCES:
patent: 522953 (1894-07-01), Bradley
patent: 2256912 (1941-09-01), Welch
patent: 2325989 (1943-08-01), Tryon
patent: 2547168 (1951-04-01), Nill et al.
patent: 2619853 (1952-12-01), Lange
patent: 2623417 (1952-12-01), Hermann
patent: 2803152 (1957-08-01), Wales
patent: 3256764 (1966-06-01), Hardy

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