Dynamoelectric machine and processes for making the same

Details Dynamoelectric machine and processes for making the same Dynamoelectric machine and processes for making the same

1996-10-03

1998-06-16

Dougherty, Thomas M.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 71, 310 88, 310 91, 29596, H02K 500

Patent

active

057675961

ABSTRACT:
Disclosed are methods of making dynamoelectric machines which include use of two sheet metal cup-shaped members to form a housing that completely surrounds and encloses the stator. The stator is assembled with a can in such a manner that the core of the stator is completely contained within the can. Thereafter, a cap is positioned at the exposed face of the stator and the cap and can are joined together by a sheet metal fastening technique which displaces material from one superposed sheet into a second sheet of material. The can and cap are precision formed so that they will have precision sized and located bearing receivers and core retention regions. Both the cap and the can are provided with multiple flange locations which are utilized for fastening the can and cap together during the assembly process. The cap is also provided with a notch which accommodates a lead protecting grommet that preferably is held in place by one or more bosses or pins that are fastened in openings in still another flange formed on the can.

REFERENCES:
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"Tog-L-Loc Patented Sheet Metal Joining Machine" brochure by BTM Corporation.
SAE Technical Paper Series "A New Mechanical Joining Technique for Steel Compared with Spot Welding" by Sawhill, Jr. et al., 1983.

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