CAGE ROTOR AND BAR COMPRISING A NOTCH
2 Assignments
0 Petitions
Accused Products
Abstract
A cage rotor for an electrical machine includes a rotor laminated core having a groove, and a short-circuiting ring having a first material and cast onto an axial end of the rotor laminated core. Arranged in the groove is a bar which has a bar end. The bar end penetrates into the first material of the short-circuiting ring and has a plurality of notches to provide the bar end with a greater flexibility.
6 Citations
27 Claims
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1-12. -12. (canceled)
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13. A cage rotor for an electrical machine, comprising:
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a rotor laminated core having a groove; a short-circuiting ring having a first material and cast onto an axial end of the rotor laminated core; and a bar arranged in the groove and having a bar end, said bar end penetrating into the first material and having a plurality of notches. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. An electrical machine, comprising a cage rotor including a rotor laminated core having a groove, a short-circuiting ring having a first material and cast onto an axial end of the rotor laminated core, and a bar which is arranged in the groove and has a bar end, said bar end penetrating into the first material and having a plurality of notches.
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27. A method for manufacturing a cage rotor, comprising:
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casting a short-circuiting ring onto an axial end of a rotor laminated core having a groove; arranging a bar in the groove such that a bar end penetrates a material of the short-circuiting ring; and forming a plurality of notches in the bar end to provide the bar end with a flexibility which is greater than a flexibility of a bar section adjacent to the bar end so that the bar end is able to undergo an elastic or plastic deformation, when the bar end is exposed to forces encountered during shrinkage of the material of the short-circuiting ring, as the short-circuiting ring is cast onto the axial end of the rotor laminated core and the material solidifies.
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Specification