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Method for producing beveled cage rotor and beveled cage rotor

A squirrel-cage rotor and rotor core technology, applied in the manufacture of squirrel-cage rotors, rotors, and motor generators, etc., can solve the problems of complicated copper die-casting method, difficult to control process parameters, and no longer practicable. Excellent running performance, simple structure and low cost

Active Publication Date: 2012-05-23
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the copper die-casting method is more complicated, especially when the shaft height is large, it is no longer feasible in the process
If liquid copper with a temperature exceeding 1100°C is used, it is difficult to meet the requirements of the die casting tool and it is also difficult to control the process parameters

Method used

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  • Method for producing beveled cage rotor and beveled cage rotor
  • Method for producing beveled cage rotor and beveled cage rotor
  • Method for producing beveled cage rotor and beveled cage rotor

Examples

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Embodiment Construction

[0041] figure 1 with figure 2 It is the twisted short-circuit bar 3 suitable for being inserted into the slot of the laminated rotor core in the embodiment of the present invention. The twist of the short-circuit bar 3 is characterized by the twist angle 13 , and the twist angle is characterized by the fact that the ends of the two short-circuit bars are offset in the circumferential direction of the motor due to the twist of the short-circuit bars. Such short-circuit bars 3 are designed, for example, as copper bars, which can be inserted almost without deformation into the slots of the skewed laminated rotor core.

[0042] image 3 It is a side view of the laminated rotor core 5 of the cage rotor 1 adopting the design scheme of the present invention. What the dotted line shows is the distribution situation formed by the inclination of the slots where the short-circuit bars are inserted in the laminated rotor core 5 . After these short-circuit bars have been inserted, the...

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Abstract

The invention relates to a method for producing a beveled cage rotor (1) for an asynchronous machine (2) and to a cage rotor (1) that can be produced by means of such a method. In order to improve the efficiency of the asynchronous machine (2), the cage rotor (1) comprises a laminated rotor core (5) having grooves (4), short-circuit rings (6) made of a first material and case onto the end face of the laminated rotor core (5), and short-circuit bars (3; 11; 12) made of a second material having a higher specific electrical conductivity than the first material and disposed in the grooves (4), wherein the laminated rotor core (5) and the short-circuit bars (3; 11; 12) comprise a bevel and nearly completely fill in an inner groove region (7) as seen in the radial direction of the laminated rotor core (5).

Description

technical field [0001] The invention relates to a method for producing a skewed (tilted) cage rotor for an asynchronous machine and to a cage rotor produced by this method. Background technique [0002] The new standards concerning the efficiency of standard asynchronous motors such as IE1, IE2 and IE3 require an increased amount of material, because such motors can only meet the requirements of these standards with increasing structural lengths. The current traditional aluminum die-casting method will become more and more difficult to meet the higher and higher requirements for motor efficiency in the future. [0003] However, copper cage rotors can meet such efficiency requirements. Copper has a higher electrical conductivity than aluminum, so copper cage rotors achieve higher efficiencies even with shorter construction lengths than aluminum cage rotors. [0004] In the prior art, a copper cage rotor is manufactured by a copper die-casting method. However, the copper di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K15/00H02K17/16
CPCH02K17/165B22D19/0054H02K15/0012Y10T29/49012H02K17/18H02K17/20
Inventor 克劳斯·比特纳克劳斯·基希纳米夏埃尔·米勒
Owner SIEMENS AG
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