Methods of manufacturing a stator core

• US 8,893,375 B1
• Filed: 06/07/2013
• Issued: 11/25/2014
• Est. Priority Date: 02/09/2012
• Status: Active Grant

• Current Assignee: John Pairaktaridis
• Original Assignee: John Pairaktaridis
• Inventors: Pairaktaridis, John
• Primary Examiner(s): TRINH, MINH N
• Application Number:
  US13/912,576
• Time in Patent Office: 536 Days
• Field of Search: 29596-598, 29605-606, 29732-736, 310/259, 310 42- 45, 310/49.R, 310/51, 310216-218
• US Class Current: 29/596
• CPC Class Codes: H02K 1/148 Sectional cores H02K1/141 takes precedence
• CPC Class Codes: H02K 15/02 of stator or rotor bodies
• CPC Class Codes: H02K 15/022 with salient poles or claw-shaped poles
• CPC Class Codes: H02K 15/095 by laying conductors around salient poles
• CPC Class Codes: H02K 15/12 Impregnating, heating or drying of windings, stators, rotors or machines
• CPC Class Codes: Y02P 80/30 Reducing waste in manufacturing processes; Calculations of released waste quantities
• CPC Class Codes: Y10T 29/49009 Dynamoelectric machine
• CPC Class Codes: Y10T 29/49071 by winding or coiling
• CPC Class Codes: Y10T 29/53143 Motor or generator

Abstract

A method of manufacturing a stator core including stacking a plurality of teeth into a plurality of stacks, said teeth are obtained from a jigsaw pattern of said teeth, said teeth are substantially identical to each other in size, each said tooth is substantially T-shaped via two arms protruding sideways from a leg, said teeth substantially aligning with each other in each said stack; winding said stacks with a plurality of windings; placing said stacks along a perimeter of a polygonal inner surface of a ferromagnetic tube, said inner surface defining an inner space within said tube, each side of said polygonal inner surface corresponding to each said stack and contacting the bases of said legs of each said stack; inserting a shaft into said inner space, the top surfaces of said arms facing said shaft; vacuum encapsulating said inner space in an epoxy resin; removing said shaft.

Claims

1. A method of manufacturing a stator core, said method comprising:

stacking a plurality of teeth into a plurality of stacks, said teeth are obtained from a jigsaw pattern of said teeth, said teeth are substantially identical to each other in size, each said tooth is substantially T-shaped via two arms protruding sideways from a leg, said teeth substantially aligning with each other in each said stack;

winding said stacks with a plurality of windings;

placing said stacks along a perimeter of a polygonal inner surface of a ferromagnetic tube, said inner surface defining an inner space within said tube, each side of said polygonal inner surface corresponding to each said stack and contacting the bases of said legs of each said stack;

inserting a shaft into said inner space, the top surfaces of said arms facing said shaft;

vacuum encapsulating said inner space in an epoxy resin; and

removing said shaft.

2. The method of claim 1, wherein said pattern defining at least a portion of a sheet, at least one of said teeth including a soft magnetic alloy, at least one of said windings including at least one of a coil and a belt, each said winding corresponding to each said stack and looping around said legs along the perimeter of each said stack.

3. The method of claim 2, wherein said portion is formed via cutting, said shaft including a plurality of separators, each said separator is stationed between two of said stacks, at least one of said windings is laminated.

4. The method of claim 3, wherein said shaft is coupled to a base, said separators extending in parallel along the length of said shaft, said cutting including waterjet cutting.

5. The method of claim 1, wherein the outer surface of said tube is polygonal.

6. The method of claim 1, wherein said stacks have a substantially identical height.

7. A method of manufacturing a stator core, said method comprising:

disassembling a jigsaw pattern into a plurality of substantially identically sized teeth, each said tooth is substantially T-shaped via two arms protruding sideways from a leg;

stacking said teeth into a plurality of stacks, said stacked teeth are substantially aligned with each other;

winding said stacks with a plurality of windings;

placing said stacks along a perimeter of a polygonal inner surface of a ferromagnetic tube, said inner surface defining an inner space within said tube, each side of said polygonal inner surface corresponding to each said stack and contacting the bases of said legs of each said stack;

inserting a shaft into said inner space, the top surfaces of said arms facing said shaft;

vacuum encapsulating said inner space in an epoxy resin; and

removing said shaft.

8. The method of claim 7, wherein said pattern defining at least a portion of a sheet, at least one of said teeth including a soft magnetic alloy, at least one of said windings including at least one of a coil and a belt, each said winding corresponding to each said stack and looping around said legs along the perimeter of each said stack.

9. The method of claim 7, wherein said disassembling is via cutting, said shaft including a plurality of separators, each said separator is stationed between two of said stacks, at least one of said windings is laminated.

10. The method of claim 7, wherein said shaft is coupled to a base, said shaft including a plurality of separators extending in parallel along the length of said shaft, said disassembling including waterjet cutting.

11. The method of claim 7, wherein the outer surface of said tube is polygonal.

12. The method of claim 7, wherein said stacks have a substantially identical height.

13. A method of manufacturing a stator core, said method comprising:

cutting a jigsaw pattern into a plurality of substantially equally sized T-shaped teeth such that each said tooth is substantially T-shaped via two arms protruding sideways from a leg;

stacking said teeth into a plurality of stacks such that said stacked teeth are substantially aligned with each other;

winding said stacks with a plurality of windings;

placing said stacks along a perimeter of a polygonal inner surface of a ferromagnetic tube, said inner surface defining an inner space within said tube, each side of said polygonal inner surface corresponding to each said stack and contacting the bases of said legs of each said stack;

inserting a shaft into said inner space such that the top surfaces of said arms facing said shaft;

vacuum encapsulating said inner space in an epoxy resin; and

removing said shaft.

14. The method of claim 13, wherein said pattern defining at least a portion of a sheet, at least one of said teeth including a soft magnetic alloy, at least one of said windings including at least one of a coil and a belt, each said winding corresponding to each said stack and looping around said legs along the perimeter of each said stack.

15. The method of claim 13, wherein said shaft including a plurality of separators between said stacks, at least one of said windings is laminated.

16. The method of claim 13, wherein said shaft is coupled to a base, said shaft including a plurality of separators extending in parallel along the length of said shaft, said cutting including waterjetting.

17. The method of claim 13, wherein the outer surface of said tube is polygonal.

18. The method of claim 13, wherein said stacks have a substantially identical height.

19. The method of claim 13, wherein said pattern defining at least a portion of a sheet, at least one of said teeth including a soft magnetic alloy, at least one of said windings including at least one of a coil and a belt, each said winding corresponding to each said stack and looping around said legs along the perimeter of each said stack, said shaft including a plurality of separators between said stacks, at least one of said windings is laminated, said shaft is coupled to a base, said separators extending in parallel along the length of said shaft, said cutting including waterjetting, the outer surface of said tube is polygonal, said stacks have a substantially identical height.

20. The method of claim 13, wherein said pattern is within at least a portion of a sheet, at least one of said teeth including a soft magnetic alloy, at least one of said windings including at least one of a coil and a belt, each said winding corresponding to each said stack and looping around said legs along the perimeter of each said stack, said shaft is coupled to a base, said shaft including a plurality of separators extending in parallel along the length of said shaft, said cutting including waterjetting.