Metal deforming – By use of tool acting during relative rotation between tool... – During rotation of work
Patent
1981-07-01
1983-09-06
Larson, Lowell A.
Metal deforming
By use of tool acting during relative rotation between tool...
During rotation of work
72124, 72126, B21D 1904
Patent
active
044022026
ABSTRACT:
A continuous rotary machine for roll flanging the ends of cylindrical container bodies transports the container bodies in a star wheel while applying a roll flanging tool head to the end portion of the container body in two stages. In the first stage, the tool head forms a small flange that acts as a stress ring to maintain the cylindrical body in circular configuration at the open end, and the stress ring is ironed. In the second stage, the tool head advances by a greater distance to form a larger portion of the flange, and this flange is ironed. Both ends of a cylindrical container body may be simultaneously flanged by this method, in which case the opposite flanging heads rotate in opposite directions at substantially the same speed. The rotary apparatus provides a spindle/ram assembly on a turret for supporting and moving the flanging heads. A cam operates the axially movable ram portion and is located radially outside the ram for greater accuracy in the cam profile. The turret is accurately maintained on a main shaft of the machine by a two rib supporting structure to assure radial alignment and by a locking key with expandable body in a keyway to assure axial alignment.
REFERENCES:
patent: 3062263 (1962-11-01), Austing et al.
patent: 3266451 (1966-08-01), Kraus
patent: 3498245 (1970-03-01), Hansson
patent: 3782314 (1974-01-01), Franek et al.
patent: 4199073 (1980-04-01), Gombas
Larson Lowell A.
Rost Kyle W.
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