Rolling die and method for forming thread or worm and spline...

Details Rolling die and method for forming thread or worm and spline... Rolling die and method for forming thread or worm and spline...

2007-02-16

2008-07-01

Tolan, Edward (Department: 3725)

Metal deforming

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

During rotation of work

C072S102000, C072S469000

Reexamination Certificate

active

07392680

ABSTRACT:
There is provided a rolling die and a method for forming a thread or worm and a spline having a small number of teeth whose number is thirteen or less simultaneously by rolling. By use of rolling dies, the formation of a worm by rolling by use of a thread rolling die starts, and after that, the formation of a spline having a small number of teeth by rolling starts by use of a spline rolling die while continuing the formation of the worm. Accordingly, a rolled material can be rolled forcibly by a driving source from the worm rolled using the thread rolling die. As a result, the spline having a small number of teeth whose number is thirteen or less can be formed by rolling onto the rolled material at the same time as the formation of the worm.

REFERENCES:
patent: 3857273 (1974-12-01), Miller et al.
patent: 4683743 (1987-08-01), Fitzpatrick
patent: 4771623 (1988-09-01), Killop
patent: 4829800 (1989-05-01), Killop
patent: 6250123 (2001-06-01), Killop
patent: 2002/0062671 (2002-05-01), Lee et al.
patent: 60-072630 (1985-04-01), None
patent: 04-187337 (1992-07-01), None

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