Metal deforming – By use of tool acting during relative rotation between tool... – With cutting of work or product
Patent
1975-10-29
1977-12-27
Simpson, Othell M.
Metal deforming
By use of tool acting during relative rotation between tool...
With cutting of work or product
72 82, 72 84, 72115, B21D 5124
Patent
active
040647269
ABSTRACT:
A method and apparatus for manufacturing pressure pots having a rim with bayonet cams on its undersurface includes a spinning operation to fold over the rim and to simultaneously form the bayonet cams. More specifically, the pot is held inside a chuck having an annular cam profile facing the underside of the rim and spinning rollers engage the upper face of the rim and fold over the rim increasing its thickness and forcing the metal in the rim to comform to the cam profile. The rim is confined on its radially outward side by an axially shiftable retaining ring and is confined on its radially inward side by a counterholder cylinder. After folding over of the rim, the upper face of the rim is formed by machining or the like which may remove the metal between adjacent bayonet cams.
REFERENCES:
patent: 1304939 (1919-05-01), Brinkman
patent: 1421507 (1922-07-01), Lindberg
patent: 2472620 (1949-06-01), Rhodes et al.
patent: 2490880 (1949-12-01), Olson
patent: 2573736 (1951-11-01), Scavullo
patent: 2698122 (1954-12-01), Pechy
Culver Horace M.
Simpson Othell M.
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