Punching holes in thin sheet material

Details Punching holes in thin sheet material Punching holes in thin sheet material

1974-10-03

1976-04-13

Schran, Donald R.

Cutting

With product handling means

By fluid current

83639, 83140, 83206, 83375, 83390, 83456, 83124, B26D 702, B26D 706

Patent

active

039496317

ABSTRACT:
An apparatus for punching holes in thin sheet stock includes an improved clamping arrangement which holds the sheet stock firmly during the punching operation in the regions surrounding the hole to be cut as well as in the slug region which is to be cut from the sheet.

REFERENCES:
patent: 1493994 (1924-05-01), Lefere
patent: 2251135 (1941-07-01), Iknayan et al.
patent: 2579940 (1951-12-01), Lobrovich
patent: 3501987 (1970-03-01), Schneider

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