Method of rotor assembly without the hub
First Claim
1. A method of rotor assembly without a hub comprising:
- stacking first rotor laminations sufficiently to form a first lamination stack having an inner diameter of substantially one predetermined size, said first lamination stack having a first end and a second end;
stacking second rotor laminations sufficiently onto said second end of said first lamination stack to form a second lamination stack having an inner diameter of substantially another predetermined size to facilitate the attachment of the rotor assembly without a hub, said second lamination stack having a first end and a second end;
wherein there is no central shaft extending through a center of said rotor assembly to aid construction of the rotor assembly;
stacking third rotor laminations sufficiently onto said second end of said second lamination stack to form a third lamination stack having an inner diameter of said one predetermined size;
wherein said first, second and third rotor laminations have a shape with substantially the same outer diameter; and
wherein said second rotor laminations have a larger inner diameter than said first and third rotor laminations.
13 Assignments
0 Petitions
Accused Products
Abstract
A method of assembling a rotor assembly is provided, without the use of a rotor steel hub. The method comprises forming first, second and third lamination stacks by stacking individual rotor laminations together. The first, second and third lamination stacks are cast to lock the individual rotor laminations together. The rotor laminations in the first, second and third lamination stacks have a generally ring-like shape with a variable inner diameter and a substantially common outer diameter. The rotor laminations in the first, second and third lamination stacks have substantially the same outer diameter, whereas the rotor laminations in the second lamination stack have a substantially larger inner diameter than the first and third rotor laminations. The elimination of the hub results in reducing total cost and manufacturing cycle time, and in improved features, performance and efficiency of the rotor assembly.
17 Citations
12 Claims
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1. A method of rotor assembly without a hub comprising:
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stacking first rotor laminations sufficiently to form a first lamination stack having an inner diameter of substantially one predetermined size, said first lamination stack having a first end and a second end; stacking second rotor laminations sufficiently onto said second end of said first lamination stack to form a second lamination stack having an inner diameter of substantially another predetermined size to facilitate the attachment of the rotor assembly without a hub, said second lamination stack having a first end and a second end; wherein there is no central shaft extending through a center of said rotor assembly to aid construction of the rotor assembly; stacking third rotor laminations sufficiently onto said second end of said second lamination stack to form a third lamination stack having an inner diameter of said one predetermined size; wherein said first, second and third rotor laminations have a shape with substantially the same outer diameter; and wherein said second rotor laminations have a larger inner diameter than said first and third rotor laminations. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of rotor assembly without a hub comprising:
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stacking first rotor laminations sufficiently to form a first lamination stack having an inner diameter of substantially one predetermined size, said first lamination stack having a first end and a second end; stacking second rotor laminations sufficiently onto said second end of said first lamination stack to form a second lamination stack having an inner diameter of substantially another predetermined size to facilitate the attachment of the rotor assembly without a hub, said second lamination stack having a first end and a second end; stacking third rotor laminations sufficiently onto said second end of said second lamination stack to form a third lamination stack having an inner diameter of said one predetermined size, said third lamination stack having a first end and a second end; wherein there is no central shaft extending through a center of said rotor assembly to aid construction of the rotor assembly; wherein said first, second and third rotor laminations have a shape with substantially the same outer diameter; wherein said second rotor laminations have a larger inner diameter than said first and third rotor laminations; wherein said shape of said first, second and third rotor laminations is a ring shape, having an outer and inner circumference; forming a first bolt hole along a periphery of said inner circumference of said first rotor laminations, said first bolt hole extending from said first end of said first lamination stack to said second end of said first lamination stack; forming a second bolt hole along a periphery of said inner circumference of said third rotor laminations, said second bolt hole extending from said first end of said third lamination stack to said second end of said third lamination stack; and wherein no bolt holes are formed through said second rotor laminations. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification