Claims
- 1. A manufacturing process for a divided stator comprising:
forming an iron core having outer circumferential slots; and winding coil around the outer circumferential slots of the iron core, and inserting the iron core into an outer ring yoke provided with a cylindrical inner surface; wherein the iron core is formed by laminating a plurality of pole pieces having a fit position formed on both sides, fixing the plurality of pole pieces to each other to form pole piece laminates, arranging a plurality of the pole piece laminates in a ring, holding at least one of an outer circumference and an inner circumference thereof by jigs, and press-fitting connecting members in a laminating direction between adjacent portions of the plurality of adjoining pole piece laminates.
- 2. A manufacturing process for a divided stator comprising:
forming an iron core having outer circumferential slots; winding coil around the outer circumferential slots of the iron core, and inserting the iron core into an outer ring yoke provided with a cylindrical inner surface; wherein the iron core is formed by forming an iron core blank comprising a plurality of pole pieces having fit portions formed on both sides of the pole pieces and arranging the pole pieces in a ring; forming a bridge portion between the plurality of pole pieces adjacent to each other wherein the bridge portion can be broken by circumferential separation; laminating and fixing a plurality of iron core blanks to form an iron core laminate, holding an outer circumference of the iron core laminate with a jig in such a manner that each pole piece advances outwards in a radial direction by a specified distance, breaking the bridge portion by separating the pole pieces in a circumferential direction while advancing each pole piece outwardly in a radial direction by press-fitting a connecting member between fit portions of a plurality of adjacent pole pieces thereby connecting the adjacent pole pieces.
- 3. A manufacturing process for a divided stator comprising:
forming an iron core having outer circumferential slots; winding coil around the outer circumferential slots of the iron core, and inserting the iron core into an outer ring yoke provided with a cylindrical inner surface; wherein the iron core is formed by forming an iron core blank comprising a plurality of pole pieces, arranging the pole pieces in a ring, wherein fit portions are formed on both sides of the pole pieces; forming a bridge portion between the plurality of pole pieces adjacent to each other, wherein the bridge portion can be broken by circumferential separation; laminating a plurality of pole pieces to form pole piece laminates, arranging a plurality of pole piece laminates in a ring and positioning them between the pole pieces of at least two iron core blanks and fixing the pole pieces to each other, holding at least one of an outer circumference and an inner circumference of at least two iron core blanks and a plurality of the pole piece laminates with a jig in such a manner that each pole piece and pole piece laminate can advance outwardly in a radial direction by a specified distance, breaking the bridge portion by press-fitting a connecting member between fit portions of the plurality of pole pieces and pole piece laminates adjacent to each other thereby advancing each pole piece and pole piece laminate outwardly in the radial direction and adjacent pole pieces are separated in the circumferential direction, and at the same time connecting the adjacent pole pieces and pole piece laminates.
- 4. A manufacturing process for a divided stator comprising:
forming an iron core having outer circumferential slots; winding coil around the outer circumferential slots of the iron core, and inserting the iron core into an outer ring yoke provided with a cylindrical inner surface; wherein the iron core is formed by forming an iron core blank comprising a plurality of pole piece portions arranged in a ring wherein fit portions are formed on both sides of the pole pieces; forming a bridge portion between the plurality of pole piece portions adjacent to each other, laminating a plurality of pole pieces having the fit portion on both sides to form pole piece laminates; arranging a plurality of pole piece laminates in a ring, positioning the pole piece laminates between the pole pieces of at least two iron core blanks and fixing; press-fitting a connecting member between fit portions of a plurality of pole pieces portions and pole piece laminates adjacent to each other, thereby connecting a plurality of adjacent pole pieces and pole piece laminates.
- 5. A manufacturing process for the divided stator as in claim 2, wherein the bridge portion is a thin-wall portion between adjacent pole pieces.
- 6. A manufacturing process for the divided stator as in claim 3, wherein the bridge portion is a thin-wall portion between adjacent pole pieces.
- 7. A manufacturing process for the divided stator as in claim 4, wherein the bridge portion is a thin-wall portion between adjacent pole pieces.
- 8. A manufacturing process for the divided stator as in claim 2, wherein a yoke blank is formed having a fitting recess on an inner circumferential edge that allows at least one of an outer tip portion of the pole piece laminate and an outer tip portion of the pole piece and the pole piece laminate to be separated by a specified distance;
and wherein a plurality of yoke blanks are laminated and fixed to one another to form an outer ring yoke, wherein the outer ring yoke is used in place of a jig, and the forming and the inserting of the iron core into the cylindrical yoke are carried out simultaneously.
- 9. A manufacturing process for the divided stator as in claim 3, wherein a yoke blank is formed having a fitting recess on an inner circumferential edge that allows at least one of an outer tip portion of the pole piece profile portion laminate and an outer tip portion of the pole piece and the pole piece laminate to be separated by a specified distance;
and wherein a plurality of yoke blanks are laminated and fixed to one another to form an outer ring yoke, wherein the outer ring yoke is used in place of a jig, and the forming and the inserting of the iron core into the cylindrical yoke are carried out simultaneously.
- 10. A manufacturing process for the divided stator as in claim 1, wherein the connecting member comprises a non-magnetic metal material.
- 11. A manufacturing process for the divided stator as in claim 2, wherein the connecting member comprises a non-magnetic metal material.
- 12. A manufacturing process for the divided stator as in claim 3, wherein the connecting member comprises a non-magnetic metal material.
- 13. A manufacturing process for the divided stator as in claim 4, wherein the connecting member comprises a non-magnetic metal material.
Parent Case Info
[0001] This application is a divisional application of U.S. application Ser. No. 09/246,137 filed on Feb. 8, 1999, currently pending.
Divisions (1)
|
Number |
Date |
Country |
Parent |
09246137 |
Feb 1999 |
US |
Child |
09761668 |
Jan 2001 |
US |