Laminated rotor machining enhancement
First Claim
1. A rotor comprising:
- a lamination stack including a plurality of stacked laminations, wherein each lamination includes;
a first face;
a second, opposing face; and
a circumferential surface;
a plurality of radially extending slots arranged about a circumference of each of the plurality of laminations, each slot including a radially inward-facing surface configured to mate with a wedge, anda first chamfer on the radially inward-facing surface of each of the plurality of radially extending slots, wherein the first chamfer connects the radially inward-facing surface and the first face of the lamination;
a stud member passing longitudinally through at least one hole in the lamination stack, a first end flange member on a first end of the lamination stack, and a second end flange member on a second end of the lamination stack;
a first fastener affixed to a first axial end of the stud member;
a second fastener affixed to a second axial end of the stud member;
the first fastener and the second fastener providing a compression to the laminated stack; and
a plurality of coils positioned within the plurality of slots.
2 Assignments
0 Petitions
Accused Products
Abstract
A laminated rotor for an electric machine is disclosed. In an embodiment, the rotor comprises a plurality of stacked laminations. Each lamination includes a plurality of radially extending slots arranged about a circumference thereof, and a first chamfer on a surface of each of the slots, wherein the surface mates with a wedge. The first chamfer connects the surface and a first face of the lamination. A stud member passes longitudinally through a hole in the lamination stack, a first end flange member on a first end of the lamination stack, and a second end flange member on a second end of the lamination stack. A first fastener is affixed to a first end of each of the at least one stud member; and a second fastener affixed to a second end of each of the at least one stud member.
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Citations
20 Claims
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1. A rotor comprising:
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a lamination stack including a plurality of stacked laminations, wherein each lamination includes; a first face;
a second, opposing face; and
a circumferential surface;a plurality of radially extending slots arranged about a circumference of each of the plurality of laminations, each slot including a radially inward-facing surface configured to mate with a wedge, and a first chamfer on the radially inward-facing surface of each of the plurality of radially extending slots, wherein the first chamfer connects the radially inward-facing surface and the first face of the lamination; a stud member passing longitudinally through at least one hole in the lamination stack, a first end flange member on a first end of the lamination stack, and a second end flange member on a second end of the lamination stack; a first fastener affixed to a first axial end of the stud member; a second fastener affixed to a second axial end of the stud member; the first fastener and the second fastener providing a compression to the laminated stack; and a plurality of coils positioned within the plurality of slots. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An electric machine comprising:
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a rotor including; a lamination stack including a plurality of stacked laminations, wherein each lamination includes; a first face;
a second, opposing face; and
a circumferential surface;a plurality of radially extending slots arranged about a circumference thereof, each slot including a radially inward-facing surface configured to mate with a wedge, and a first chamfer on the radially inward-facing surface of each of the plurality of radially extending slots, wherein the first chamfer connects the radially inward-facing surface and the first face of the lamination; a stud member passing longitudinally through at least one hole in the lamination stack, a first end flange member on a first end of the lamination stack, and a second end flange member on a second end of the lamination stack; a first fastener affixed to a first axial end of the stud member; a second fastener affixed to a second axial end of the stud member; the first fastener and the second fastener providing a compression to the laminated stack; a plurality of coils positioned within the plurality of slots; and a stator surrounding the rotor. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A lamination for forming a rotor body comprising:
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a first face;
a second, opposing face; and
a circumferential surface;a plurality of radially extending slots arranged about a circumference of the lamination, each slot including a radially inward-facing surface configured to mate with a wedge; a first chamfer on the radially inward-facing surface of each of the plurality of radially extending slots, wherein the first chamfer connects the radially inward-facing surface and the first face of the lamination; at least one hole in the lamination for a stud member to pass through. - View Dependent Claims (17, 18, 19, 20)
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Specification