Metal working – Method of mechanical manufacture – Obtaining plural product pieces from unitary workpiece
Patent
1982-02-26
1984-02-28
Goldberg, Howard N.
Metal working
Method of mechanical manufacture
Obtaining plural product pieces from unitary workpiece
29434, 403 57, B23P 1700, B23P 1100, F16D 300
Patent
active
044334656
ABSTRACT:
A process for manufacturing a universal joint which involves punching a blank out of a metal sheet material, the blank having a hub member portion, edge member portions on the opposite ends of the hub member portion, and a pair of prong portions projecting from one of the side edges of the hub member portion, with a neck portion therebetween, pressing the free edges of the edge member portions to form slanted surfaces on the ends thereof and to increase the width of the blank from the original punched out size and pressing the neck portion for removing fine cracks therefrom, and bending the edge member portions against the hub member portion with the slanted surfaces facing away from the surface of the hub member portion. Then the hub member portion is bent into a cylinder with the edge member portions abutting each other and projecting from the cylinder and with the slanted surfaces substantially aligned with the inner surface of the cylinder. Holes are bored in the prong member portions to receive a pin for a cross-arm, and the edge member portions are secured together. Thereafter the inner circumferential surface of the hub is splined. The blanks can be punched from the sheet material without any allowance being left between blanks or at the edges of the sheet material.
REFERENCES:
patent: 1700991 (1929-02-01), Wintercorn
patent: 2360004 (1944-10-01), MacLean
patent: 2550368 (1951-04-01), Michael
patent: 2550625 (1951-04-01), Vick
patent: 4092772 (1978-06-01), Moring
Katanaga Kenji
Nakano Koji
Aida Engineering Ltd.
Goldberg Howard N.
Nichols Steven
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