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Rotor for an electric machine

A rotor and rotor shaft technology, applied in the direction of electromechanical devices, electrical components, electric components, etc., can solve problems such as preload fluctuations

Pending Publication Date: 2021-11-05
AUDI AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Preload fluctuations can also occur here due to fluctuating frictional conditions in the thread

Method used

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  • Rotor for an electric machine

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Embodiment Construction

[0016] figure 1 A rotor 1 according to the invention is shown, which has a rotor shaft 2 , on which a laminated core 3 is placed, which comprises a plurality of individual laminated cores arranged axially one behind the other. The laminations have a thickness in the range of a fraction of a millimeter, at least in the range of about 0.25 mm to 0.3 mm, wherein the lamination thickness should of course be in the sum of a plurality, 100 to more than 1000 individual laminations be as uniform as possible. Since the lamination thickness is of course not constant over all laminations, there must be certain length variations from lamination pack to lamination pack which, due to the addition of individual tolerances, can add up to several millimeters. This length change can be compensated in a simple manner, but at the same time the axial tensioning of the lamination pack must be ensured with a minimum surface pressure between two adjacent laminations in order to achieve radial tightn...

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Abstract

The invention relates to a rotor for an electric machine, comprising a rotor shaft (2) and a laminated core (3) arranged on it, comprising multiple metal plates arranged in axial succession and lying against each other, as well as at least one coolant duct (18, 20) running through the laminated core (3), wherein the laminated core (3) is axially clamped by at least one clamping means (8), wherein the clamping means (8) shoved onto the rotor shaft (2) comprises at least one axially braced spring element (10) and at least one tolerance compensation disk (9).

Description

technical field [0001] The invention relates to a rotor for an electric machine, comprising a rotor shaft and a lamination stack arranged on the rotor shaft and at least one coolant channel extending through the lamination stack, the lamination stack comprising a plurality of axial Laminated laminations arranged one behind the other and abutting one another, wherein the laminated core is axially tensioned by at least one tensioning device. Background technique [0002] Electric machines including stators and rotors are used in various fields of application. An example is the automotive field, where electric machines are used as drive motors for vehicles. [0003] The rotor generally comprises a rotor shaft and a lamination pack arranged on the rotor shaft. The stack of laminations comprises a plurality of laminations arranged axially one behind the other and abutting against each other, through which the rotor shaft extends. During operation, intense heat build-up often o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/22H02K1/32H02K9/19
CPCH02K1/22H02K1/32H02K9/19H02K1/28H02K1/30
Inventor M·卢克斯P·苏斯L·韦特劳
Owner AUDI AG
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