Method of forming tappet adjusting screws

Details Method of forming tappet adjusting screws Method of forming tappet adjusting screws

1989-05-02

1990-06-12

Combs, E. Michael

Metal deforming

By use of closed-die and coacting work-forcer

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

10 10R, 10 27PH, B21D 5300, B23G 100, B21J 502

Patent

active

049322346

ABSTRACT:
A method of forming a tappet adjusting screw is disclosed herein. In this method, a wire material is cut to a predetermined length, the cut flaws at one end of the material are removed and simultaneously the end face of the other end of the material is provided with a linear groove. The end face of the first end of the material is processed to a convex spherical shape and this end of the material is reduced in diameter and a flange is formed about the convex spherical end face, this flange then being sheared off.

REFERENCES:
patent: 1555925 (1925-10-01), Maurer
patent: 1851127 (1932-03-01), Moore et al.
patent: 1896837 (1933-02-01), Campbell et al.
patent: 2016239 (1935-10-01), Ford et al.
patent: 2813279 (1957-11-01), Friedman
patent: 3477075 (1969-11-01), Putetti

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