Metal deforming – By use of closed-die and coacting work-forcer – Forcing work into or within closed die; e.g. – forging
Patent
1976-08-26
1978-02-14
Gilden, Leon
Metal deforming
By use of closed-die and coacting work-forcer
Forcing work into or within closed die; e.g., forging
72433, B21D 2200
Patent
active
040731782
ABSTRACT:
A device is provided for precision cold forging of hollow, spherical heads of ball-joint pivots of the type used in the steering and suspension joints of automobiles, which includes a pair of hemispherical forming dies closing on a joint plane passing almost through the center of the ball-joint. One of the dies containing the pivot rod of the ball-joint pivot is clamped onto a tool-holder unit against a bearing edge situated almost on a level with the center of the ball-joint and of the joint plane, with an end part thereof receiving a thrust from a flexible element which opposes the forming pressure of the hollow, spherical head and assures that the die is permanently supported on the bearing edge. Precision cold forging of hollow, spherical forms, mass-produced with finite dimensions is thus available.
REFERENCES:
patent: 2811057 (1957-10-01), Vosler et al.
patent: 3036366 (1962-05-01), Ricks
patent: 3108502 (1963-10-01), Chatfield
patent: 3138257 (1964-06-01), Andersen
patent: 3537291 (1970-11-01), Hawkins
Dutartre Maurice
Roger Yves
Gilden Leon
Regie Nationale des Usines Renault
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