Method for manufacturing a direct acting hydraulic tappet

Details Method for manufacturing a direct acting hydraulic tappet Method for manufacturing a direct acting hydraulic tappet

1993-10-20

1995-07-11

Cuda, Irene

Metal working

Method of mechanical manufacture

Prime mover or fluid pump making

2988846, 123 9052, B23P 1500

Patent

active

054309344

ABSTRACT:
A method for making a direct acting tappet in which an oil groove and interior structure defining a weld interface are formed in a cupshaped body by a rolling process, the body is heat treated, a web and hub structure is positioned against the weld interface and the resulting assembly is subjected to a localized, capacitive discharge welding process in the weld interface area. The weld interface is formed to a specific shape to enhance the integrity of the weld. Further, a baffle member can be assembled to the web and hub structure prior to its positioning within the body member.

REFERENCES:
patent: 4465038 (1984-08-01), Speil
patent: 4590898 (1986-05-01), Buente et al.
patent: 4602409 (1986-07-01), Schaeffer
patent: 4876997 (1989-10-01), Zorn et al.
patent: 4993150 (1991-02-01), Reinhardt
MTZ--Motortechnische Zeitschrift vol. 49 No. 3 Mar. 1988.
Welding and Metal Fabrication vol. 42, No. 4 Apr. 1974.

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