Method of cold coining a toothed segment for an endless track wh

Metal deforming – By use of closed-die and coacting work-forcer – Forcing work into or within closed die; e.g. – forging

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72356, 72414, 72375, 74448, 291592, B21D 2200

Patent

active

044209622

ABSTRACT:
A method of forging an arcuate shaped toothed segment which is adapted to be bolted to an endless track wheel for an endless track vehicle. The method includes the simultaneous finishing without the necessity of machining of various surfaces of the toothed segment, and which surfaces are arranged at right angles to one another. The method includes inserting a rough blank so that the surfaces to be finished are held in a two-piece die and at an inclined angle in respect to the direction of die movement. As a result, all of the surfaces of the segment are simultaneously and completely finished so as to need no further machining. A two-piece coin die assembly for the coining and finishing without machining of various surfaces of a toothed segment for an endless track wheel, wherein the surfaces, which are at right angles to one another are positioned at an inclined angle on the die in respect to the direction of die movement so as to simultaneously finish all of the surfaces and eliminate the necessity for machining. The die assembly also includes an adjustable coin button in one of the dies for accurately finishing and locating one of the surfaces and from which all of the other finished surfaces are to be held within specific and very close tolerances.
An arcuate shaped tooth segment for an endless track wheel having various surfaces arranged at right angles to one another and which are formed and finished completely and accurately by the above method and die assembly.

REFERENCES:
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patent: 2778064 (1957-01-01), Clark
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patent: 3439551 (1969-04-01), Militana
patent: 3472090 (1969-10-01), Dawe
patent: 3478565 (1969-11-01), Schenk et al.
patent: 3908430 (1975-09-01), Orain
patent: 4207762 (1980-06-01), Kelly, Jr.

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