Method of forming outer ring of constant velocity joint

Details Method of forming outer ring of constant velocity joint Method of forming outer ring of constant velocity joint

1998-12-22

2000-05-02

Butler, Rodney A.

Metal deforming

By use of closed-die and coacting work-forcer

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

72352, B21D 2200

Patent

active

060558385

ABSTRACT:
A forge-molding method for forming a constant velocity joint outer ring comprising a shaft and a cup formed integral with and expanding radially and outwardly from one end of the shaft is provided. The method uses an ironing die apparatus which is provided with a lower molding die, an upper molding die and an ironing punch. The lower molding die is provided with a first cavity formed to have a final degree of product accuracy with respect to the shaft and adapted to apply a final ironing process to the shaft, while the upper molding die is provided with a second cavity for restraining the outer peripheral surface of the cup. Consequently, the accuracy of concentricity between the shaft and the cup can be securely maintained in a simple manner and a sufficient degree of accuracy of the inner peripheral surface and/or the inner diameter of the cup can be effectively secured.

REFERENCES:
patent: 4601191 (1986-07-01), Ikeda et al.
patent: 4967584 (1990-11-01), Sato et al.

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