Semi-manufacture pulley forming apparatus

Details Semi-manufacture pulley forming apparatus Semi-manufacture pulley forming apparatus

2007-02-27

2007-02-27

Tolan, Ed (Department: 3725)

Metal deforming

By use of tool acting during relative rotation between tool...

During rotation of work

C072S085000, C072S110000, C029S892000

Reexamination Certificate

active

11066280

ABSTRACT:
A pulley is made by fixing an edge of an opening of a plate by using a first upper mandrel ring installed at a lower end of a first supporting pin of a first forming device. A supporting block disposed around an upper end of a first spindle is rotated with the first spindle. An inner hub of the pulley is formed by inwardly pressing an upper surface of the plate against a first pressing roller to reduce the thickness of the plate while drawing the plate around a first mandrel ring. The plate is fixed to a second spindle of a second forming device, so the plate rotates with the second spindle. An outer hub is formed by pressing a convex bead toward the inner hub by using a fourth pressing roller and by drawing the outer hub.

REFERENCES:
patent: 5829291 (1998-11-01), Tanaka et al.
patent: 5904060 (1999-05-01), Kanemitsu et al.
patent: 5951422 (1999-09-01), Roes et al.
patent: 5987952 (1999-11-01), Kutzscher et al.
patent: 6302971 (2001-10-01), Ohara et al.
patent: 6434991 (2002-08-01), Jaschka
patent: 6463659 (2002-10-01), Shohara et al.
patent: 6688149 (2004-02-01), Friese
patent: 2001/0035035 (2001-11-01), Rose et al.
patent: 2001/0035036 (2001-11-01), Monathan et al.

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