Apparatus for assembling dynamoelectric machine stators
US4267719A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 1, 1979 |
| Grant date | May 19, 1981 |
| Priority date | — |
| Expiry date | Jun 1, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/53161
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Apparatus for forming a stator for a dynamoelectric machine by inserting prewound coils into a slotted stator core includes enlarging the slot openings or gap between certain adjacent pairs of stator teeth, placing the prewound stator windings in selected stator core slots and thereafter reducing the slot opening or gap between those certain adjacent pairs of teeth. The disclosed apparatus includes a stator bore support and a series of punches to be placed in stator slots and collapsed radially inwardly to bend the stator teeth tips to conform to the bore support. An otherwise conventional coil inserting or injecting machine has unique blades, each of which has a pair of elongated depressions for accepting the respective formed stator teeth tips, and a pair of ribs outside the depression for spanning the corresponding tooth. Reforming of the stator teeth so as to provide a cylindrical bore stator may be accomplished by a plurality of cylindrical rollers which simultaneously engage the stator bore and traverse that bore interior surface to displace the stator teeth tips radially outwardly, thereby providing a wound stator for further processing having a substantially reduced iron ga…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.