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Method for connecting parts of multiple-part rotor carrier and rotor carrier of electric engine

A rotor bracket, multi-piece technology, applied in the direction of magnetic circuit rotating parts, manufacturing stator/rotor body, magnetic circuit shape/style/structure, etc., can solve problems such as laborious reprocessing, imbalance, quality damage, etc., to achieve reduction The effect of small extrusion force and good precision

Inactive Publication Date: 2010-09-01
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, these multi-part rotor brackets are mainly welded, wherein, however, due to the heat input unavoidably brought about by the welding itself, in unfavorable cases, thermal damage of one or more of these parts may occur. cause deflection and can lead to precision problems and / or imbalance problems, they must be laboriously reworked or (if not machined) can lead to quality loss
Furthermore, these welds are generally relatively expensive

Method used

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  • Method for connecting parts of multiple-part rotor carrier and rotor carrier of electric engine
  • Method for connecting parts of multiple-part rotor carrier and rotor carrier of electric engine
  • Method for connecting parts of multiple-part rotor carrier and rotor carrier of electric engine

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Embodiment Construction

[0019] figure 1 A rotor carrier 1 is shown, ie a two-part rotor carrier 2 . The rotor carrier consists of a rotor hub 3 which is substantially designed in the form of a pot 4 , wherein the pot 4 has a rotating body 5 which is configured rotationally symmetrically with respect to the axis of rotation 6 of the rotor carrier 1 and has a A substantially parallel side wall section 7 of the axis of rotation 6, on the outer side 8 of which side wall section 7 is arranged a support part 9 of the rotor holder 1 in order to form the two-part rotor holder 2 and which forms is the pipe section 10 . In this case, the rotor hub 3 forms a part 11 of the rotor carrier 1 , and the support part 9 forms a further part 12 of the rotor carrier 1 . The one component 11 is connected to the other component 12 via at least one connecting point 13 , which is designed as a mixing joint 14 . In this case, the material 15 of the one component 11 penetrates into the other component 12 , so that the othe...

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Abstract

The invention relates to a method for connecting parts of a multiple-part rotor carrier of an electric engine, said rotor carrier comprising a rotor hub as one part, and a carrier part arranged on the rotor hub, as another part, the rotor hub and carrier part being interconnected in a rotationally fixed manner by means of a connection process. According to the invention, the connection process consists of a penetrating joining method. The invention also relates to a multiple-part rotor carrier (1) of an electric engine, comprising a rotor hub (3) as one part (11), and a carrier part (9) arranged on the rotor hub, as another part (12), the rotor hub (3) and carrier parts (9) being interconnected in a rotationally fixed manner on at least one connection site (13). According to the invention, a penetrating joining site (14) is provided as the connection site (13).

Description

technical field [0001] The invention relates to a method for connecting parts of a multi-part rotor carrier of an electric machine according to the preamble of claim 1 and to such a multi-part rotor carrier. Background technique [0002] Today, one-piece, forming or casting rotor carriers are widely used in the manufacture of electric motor rotors, which are becoming more and more popular due to their technical and (depending on the field of application) possible economic disadvantages. Replaced in many places by multi-piece rotor brackets. These multi-piece rotor supports may for example consist of a rotor hub (which is manufactured, for example, in the shape of a pot) and a support part in the form of a cylindrical tube section resting on the rotor hub, so that the rotor hub and the support part can be manufactured separately and the The support part can be electrically disconnected, for example, over its entire axial extent, regardless of the radius of curvature at the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/30H02K15/02B21D39/03
CPCH02K1/30H02K15/02B21D39/031Y10T29/49009
Inventor R·施特克尔A·霍夫麦斯特M·贝卡瓦茨
Owner ROBERT BOSCH GMBH
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