Method of and apparatus for forming tooth profile

Details Method of and apparatus for forming tooth profile Method of and apparatus for forming tooth profile

2006-12-12

2006-12-12

Larson, Lowell A. (Department: 3725)

Metal deforming

By use of closed-die and coacting work-forcer

Forcing work into or within closed die; e.g., forging

C072S352000

Reexamination Certificate

active

07146838

ABSTRACT:
A punch fixed to a body assembly is inserted into a hole in a workpiece, and the workpiece is pressed by an upper die to press a splining segment of the punch into the hole in the workpiece, thereby forming spline slots in the inner circumferential surface of the hole in the workpiece. After the spline slots have been formed, the lower surface of the workpiece around the hole is held on a second lower die, and the upper surface of an outer circumferential edge portion of the workpiece is pressed by the upper die to cause the hole in the workpiece to have desired dimensional accuracy.

REFERENCES:
patent: 4245491 (1981-01-01), Kondo et al.
patent: 6178801 (2001-01-01), Ishida
patent: 7047787 (2006-05-01), Kanemitsu et al.
patent: 4-313442 (1992-11-01), None
patent: 6-212208 (1994-08-01), None

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