Method for joining a motor shell and base

Details Method for joining a motor shell and base Method for joining a motor shell and base

1992-06-11

1994-04-05

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

29512, 310 42, 310 89, H02K 1514

Patent

active

052993507

ABSTRACT:
A cylindrical shell for a motor/generator may be formed by cutting a rectangular blank, offsetting an edge, rolling the blank into a cylinder with the offset edge overlapping its opposite edge, punching through the overlapping edges to interlock them and form the cylinder, and then joining a base to the cylinder through a similar interlocking, punching process. In a variation, the base may be simultaneously joined to the cylinder as the edges are punched. Holes, or holes with locating nibs, may be used to align the blank in a cylindrical shape to reliably control the shell I.D. during fabrication.

REFERENCES:
patent: 2992857 (1961-07-01), Lemmerz
patent: 3289018 (1966-11-01), Schaefer
patent: 3313968 (1967-04-01), Kaiser
patent: 3579809 (1979-05-01), Wolf et al.
patent: 3707037 (1972-12-01), Gutris
patent: 4309815 (1982-01-01), Schmitt et al.
patent: 4459735 (1984-07-01), Sawdon
patent: 4465946 (1984-08-01), Springer
patent: 4739206 (1988-04-01), Sieber
patent: 4809429 (1989-03-01), Martin
patent: 5051020 (1991-09-01), Schleicher

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