Method for and apparatus of producing outer member of universal

Details Method for and apparatus of producing outer member of universal Method for and apparatus of producing outer member of universal

1996-09-18

1998-06-16

Larson, Lowell A.

Metal deforming

By use of closed-die and coacting work-forcer

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

72358, B21D 2200

Patent

active

057654301

ABSTRACT:
A method for and an apparatus of producing an outer member of a universal joint having cross-grooves are provided in order to increase replenishability of the inner peripheral portion of the outer member. The outer member 1 is provided in a preformed material including a shaft 1a and a cylindrical portion 1b. A punch set 5 is fitted within the cylindrical portion 1b. The punch set is expandable and constrictable in the radial direction and includes a plurality of protrusions 3 having a configuration complementary to that of the cross-grooves. The cylindrical portion 1b is pressed into a die bore 8, starting with its opening portion 9, for performing an ironing operation.

REFERENCES:
patent: 5186082 (1993-02-01), Kuramitsu et al.

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