Metal deforming – By use of tool acting during relative rotation between tool... – During rotation of work
Patent
1977-06-01
1979-01-16
Larson, Lowell A.
Metal deforming
By use of tool acting during relative rotation between tool...
During rotation of work
72 87, 72106, 72107, 72110, 113120H, B21D 2214
Patent
active
041342844
ABSTRACT:
Hollow bodies are produced from deformable plane or conically shaped blanks by rotating the blanks about an axis extending at least approximately through the cross-sectional center of gravity of the hollow body to be formed and simultaneously forming undulations in the blank. The undular shaping involves continuous formation of a propagating wave having a directional component extending in a circumferential direction, with the wave being transposed by repeated undular shaping in a direction generally radially of the body to be formed. The waves are transposed exclusively parallel to the original plane of the blank and in a single directional sense toward the hollow body to be formed. In the formation process, the material is worked out of its original plane in a deflection zone annularly surrounding the cross-sectional center of gravity of the hollow body in the formation of the hollow body wall. The forming process may be performed by apparatus which includes a rotatable roll with undularly extending generatrices.
REFERENCES:
patent: 2964089 (1960-12-01), Kunz
patent: 3572075 (1971-03-01), Sporck
patent: 3656332 (1972-04-01), Marcovitch
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