GB811183A - Improvements in or relating to laminated stators for electric motors - Google Patents
Improvements in or relating to laminated stators for electric motorsInfo
- Publication number
- GB811183A GB811183A GB27321/56A GB2732156A GB811183A GB 811183 A GB811183 A GB 811183A GB 27321/56 A GB27321/56 A GB 27321/56A GB 2732156 A GB2732156 A GB 2732156A GB 811183 A GB811183 A GB 811183A
- Authority
- GB
- United Kingdom
- Prior art keywords
- helix
- laminations
- strip
- mandrel
- electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
811,183. Making stator cores; welding by pressure; coiling. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Sept. 6, 1956 [Sept. 12, 1955], No. 27321/56. Classes 83 (2) and 83 (4). [Also in Group XXXV] In a stator coil for an electric motor comprising toothed laminations held together in a compressed unit by a plurality of welds extending transversely across the peripheries of the laminations each lamination is formed with a tapered portion the thickness of which decreases from the roots of the teeth towards the outer periphery of the lamination and each weld is effected by pressure welding with a material which softens during the welding, operation and enters the spaces between the tapered portions of the laminations. A strip STR, Fig. 1, of oriented silicon steel is stamped with slots 21 and slits 22 to form two toothed strips ST. A strip ST is passed between adjustable tapered rolls to taper the metal from the roots of the teeth all or part of the way to the edge of the strip to cause the strip to form itself into an edge wound helix. As shown in Fig. 2 a narrow rib 37 may be formed on the edge of the strip. The helix is compressed by four spaced clamps 45, Fig. 8, while arranged on a mandrel having keys to enter the spaces between the teeth, the mandrel' being then removed. A steel rod 61 is held axially along the helix by an electrode E1, the other electrode E2 being in contact with the laminations and current is passed to fuse the rod into the periphery of the helix. When laminations as in Fig. 2 are used the rib 37 upsets to allow the penetration of the weld metal. Eight such welds may be made. In a modification a keyed mandrel is left within the helix while the helix is compressed by pneumatic or hydraulic means and each electrode welds a rod to the helix.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US811183XA | 1955-09-12 | 1955-09-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB811183A true GB811183A (en) | 1959-04-02 |
Family
ID=22162203
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB27321/56A Expired GB811183A (en) | 1955-09-12 | 1956-09-06 | Improvements in or relating to laminated stators for electric motors |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB811183A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2412016A (en) * | 2004-03-09 | 2005-09-14 | Lg Electronics Inc | Assembling poles on helically wound stator yoke |
-
1956
- 1956-09-06 GB GB27321/56A patent/GB811183A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2412016A (en) * | 2004-03-09 | 2005-09-14 | Lg Electronics Inc | Assembling poles on helically wound stator yoke |
GB2412016B (en) * | 2004-03-09 | 2006-07-19 | Lg Electronics Inc | Method for manufacturing stator of brushless direct current electric motor, and stator of brushless direct current electric motor manufactured by the method |
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