Method for producing curved valve needles

Details Method for producing curved valve needles Method for producing curved valve needles

1980-07-18

1982-08-31

Meister, James M.

Metal deforming

By deflecting successively-presented portions of work during...

With cutting of work or product

72340, 291571R, 51281R, 51324, B24B 1916, F02M 6900, B21F 304

Patent

active

043465773

ABSTRACT:
A method is proposed which serves to produce a valve needle of a needle valve. The basis of the method is the production, from a wire serving as the raw material, of a springlike coil on a carrier body, where the adjacent courses of the coil rest on one another, and this coil applied to the carrier body is provided on its circumference with a predetermined contour by grinding on a grinding machine. After the grinding, the individual courses of the coil, forming the individual valve needles, are separated. The wire serving as the raw material and the valve needles after separation of the courses of the coil can be subjected in a suitable manner to a heat treatment. In a simple and inexpensive manner, the method assures the production of curved valve needles with precise dimensions.

REFERENCES:
patent: 2043695 (1936-06-01), Brownlee
patent: 2242180 (1941-05-01), Jepson
patent: 2623550 (1952-12-01), Artoni
patent: 2697865 (1954-12-01), Norton
patent: 2924826 (1960-02-01), Koppinger
patent: 2948954 (1960-08-01), Ramsa
patent: 4221747 (1980-09-01), Edmonston

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