Method for the manufacture of a machine part having external too

Details Method for the manufacture of a machine part having external too Method for the manufacture of a machine part having external too

1997-02-18

1998-09-22

Echols, P. W.

Metal working

Method of mechanical manufacture

Gear making

72110, 74449, 74457, 74460, B21D 5328

Patent

active

058096493

ABSTRACT:
A method for the manufacture of a machine part with external toothing from a circular sheet metal blank. According to this method the blank is fixed between a tool and a tail stock. Subsequently the circumferential edge of the circular sheet metal blank is bent by a first metal working roll towards the side of the tool by an angle of more than 180.degree. to form a curl. This curl is radially flattened with a second metal working roll. Subsequently the flattened curl is pressed against the tool with a gear cutting roll and shaped to form an external tooth system.

REFERENCES:
patent: 5072509 (1991-12-01), Bichel et al.
patent: 5237744 (1993-08-01), Himmeroeder
patent: 5699689 (1997-12-01), Yamanaka

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