Metal deforming – By use of closed-die and coacting work-forcer – Forcing work into or within closed die; e.g. – forging
Patent
1977-03-29
1978-03-14
Gilden, Leon
Metal deforming
By use of closed-die and coacting work-forcer
Forcing work into or within closed die; e.g., forging
72357, B21D 2200
Patent
active
040784142
ABSTRACT:
Apparatus is described for cold forming cylindrical metal blanks into parts having a central body and radial extensions, such as universal joint spiders and constant velocity universal joint tripod members. Die sectors of shortened axial height in their radial forming and extrusion zone are mounted for quick fastening and release, for example by dovetail connections to die carriers which are in turn mounted on rams displaceable along inclined converging slideways. Guide bushes are provided at the entrance to the through cavity corresponding to the central body and guide a cylindrical blank along the axes of coaxial punches fixed respectively to the plunger and column on the table for restraining plastic flow of blank metal towards the central cavity and then to the radial cavities.
REFERENCES:
patent: 1946117 (1934-02-01), Sparks
patent: 2663205 (1953-12-01), Allen
patent: 2744426 (1956-05-01), Lyon
patent: 3583198 (1971-06-01), Drallmeier
Gilden Leon
Societe Anonyme dite: Glaenzer Spicer
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