Method of rolling a simulated hole in sheet metal without drilli

Metal deforming – By use of 'flying tool' engaging moving work – Including orbitally-moving tool-face

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Details

72177, 72379, 29150, 411427, 52364, B21B 108, B21D 5336

Patent

active

045245983

ABSTRACT:
A method of fabricating sheet metal is described wherein a simulated opening for a threaded fastener is formed in sheet metal solely by roll forming a U-shaped loop segment in the sheet metal and then creating a simulated opening therein by crimping the sheet metal around a pin removably inserted in the loop segment. The simulated opening or hole is of sufficient depth to accommodate the entire length of the fastener and is formed without any drilling or punching operations.

REFERENCES:
patent: 481207 (1892-08-01), Smith
patent: 1801559 (1931-04-01), Kellogg
patent: 1842678 (1932-01-01), Kreuzeder
patent: 1874732 (1932-08-01), Young
patent: 2004700 (1935-06-01), Laemmel
patent: 3020631 (1962-02-01), Kennedy
patent: 3792560 (1974-02-01), Naylor

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