Apparatus for processing battery case can, a battery, and a manu

Details Apparatus for processing battery case can, a battery, and a manu Apparatus for processing battery case can, a battery, and a manu

1997-03-11

2000-10-03

Larson, Lowell A.

Metal deforming

By use of tool acting during relative rotation between tool...

During rotation of work

7237012, 72106, B21D 1704

Patent

active

061256773

ABSTRACT:
To present a processing apparatus capable of forming an annular support portion for mounting a sealing plate on an elliptical battery case can at high precision and high productivity, and a structure of an elliptical battery using an elliptical battery case can.
An elliptical battery case can 10 is rotatably held by a case can support mechanism 13. The battery case can 10 is rotated about its tubular center by a case can rotary mechanism 18. Two groove forming rollers 23, 24 are mounted on an oscillatable roller support lever 28. The roller support lever 28 traces the shape of the outer circumference of the battery case can 10, and oscillates within a plane orthogonal to the tubular center of the battery case can 10, and receives a pressing force from a pressurizing device 29 to press the both groove forming rollers 23, 24 against the outer circumference of the battery case can 10. As a result, an annular groove 50 is formed in the outer circumference of the elliptical battery case can 10, and an annular support portion 40 is formed in the inner circumference.

REFERENCES:
patent: 654257 (1900-07-01), Hunter
patent: 867472 (1907-10-01), Brenzinger
patent: 4389867 (1983-06-01), Whitlock
patent: 4437327 (1984-03-01), Madden
patent: 4655064 (1987-04-01), Hoback
patent: 5490867 (1996-02-01), Kozawa et al.

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