Metal deforming – By use of tool acting during relative rotation between tool... – During rotation of work
Patent
1982-01-05
1984-03-20
Larson, Lowell A.
Metal deforming
By use of tool acting during relative rotation between tool...
During rotation of work
72105, B21D 1704
Patent
active
044373279
ABSTRACT:
An apparatus is disclosed for providing a circumferential groove in a thin-walled cylindrical metal object such as the can or container (A) for a battery cell. As each object moves along a path (51, 90) defined between guide rails (42, 44, 46, 48, 88) and star wheels (56, 58, 78), it is supported on a spring-biased plunger (102-112) positioned in a rotatable support table (96-100). In the preferred embodiment, a groove-forming mandrel (132-138) is gradually inserted into the object as it moves along the path so that a radially extending shoulder (134) of the mandrel engages the lip of the open end of the object before the object is contacted by a groove-forming wheel (158, 160) which is rotated adjacent the path. A tapered surface (138) on the grooving mandrel and a radially extending flange (160) on the grooving wheel cooperate to form a circumferentially extending groove in the wall of the object while the object rotates. Following formation of the groove, the mandrel is withdrawn from the object. A corresponding method of forming such a circumferential groove also is disclosed.
REFERENCES:
patent: 1792812 (1931-02-01), Cameron
patent: 2567334 (1951-09-01), Harrison et al.
patent: 4058998 (1977-11-01), Franek et al.
patent: 4070888 (1978-01-01), Gombas
patent: 4316375 (1982-02-01), Lee, Jr.
General Electric Company
Larson Lowell A.
Policinski Henry J.
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