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Rotor core heating device and rotor core shrink-fitting method

A technology for heating devices and rotor cores, applied in electromechanical devices, manufacturing stator/rotor bodies, manufacturing motor generators, etc., can solve the problems of deformation of rotor core 580, increase of device cost, etc.

Inactive Publication Date: 2016-05-04
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the steel plate is further curled to reach the plastic region, which may deform the rotor core 580
[0016] Therefore, in the related art, it is necessary to prepare a dedicated rotor core heating device corresponding to various lengths of the rotor core in the axial direction, which may increase the cost of the device

Method used

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  • Rotor core heating device and rotor core shrink-fitting method
  • Rotor core heating device and rotor core shrink-fitting method
  • Rotor core heating device and rotor core shrink-fitting method

Examples

Experimental program
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Effect test

no. 1 approach

[0041] [First Embodiment] will refer to figure 1 The configuration of the rotor core heating device 100 will now be described. exist figure 1 , schematically shows the configuration of the rotor core heating device 100 viewed in cross section. In the following, reference will be made to figure 1 The axial direction shown is described.

[0042] The rotor core heating device 100 is a rotor core heating device according to the first embodiment of the present invention. The rotor core heating device 100 is a device that heats the rotor core 150 by induction heating to thermally fit the rotor core 150 to a shaft (not shown).

[0043]The rotor core 150 is a component of an electric machine (not shown). The motor is composed of a shaft (not shown), a rotor core 150 fitted to the shaft from the outside, and a stator (not shown). The shaft is rotatably supported in a sealed housing (not shown) and has a rotor integrally formed at one end. The stator is fixed to the side of th...

no. 2 approach

[0062] [Second Embodiment] will refer to Figure 4 The configuration of the rotor core heating device 200 will now be described. exist Figure 4 , schematically shows the configuration of the rotor core heating device 200 viewed in cross section. In the following, reference will be made to Figure 4 The axial direction shown is described.

[0063] The rotor core heating device 200 is a rotor core heating device according to the second embodiment of the present invention. The rotor core heating device 200 is a device that heats the rotor core 250 by induction heating to thermally fit the rotor core 250 to a shaft (not shown).

[0064] The rotor core 250 is a component of an electric machine (not shown). The motor is composed of a shaft (not shown), a rotor core 250 fitted to the shaft from the outside, and a stator (not shown). The shaft is rotatably supported in a sealed housing (not shown) and has a rotor integrally formed at one end. The stator is fixed to the side of...

no. 3 approach

[0082] [Third Embodiment] If the magnetic flux shielding jig 170 is arranged above the rotor core 150 in the axial direction in the rotor core heating device 100 according to the first embodiment, it may block the magnetic flux passing through the inside of the rotor core 150, This makes it possible to reduce the internal heating of the rotor core 150 to some extent.

[0083] In other words, the rotor core heating device 100 according to the first embodiment has a great room for improvement in work efficiency of reliably heating the inside of the rotor core 150 and shortening the heating time.

[0084] will refer to Figure 6A and Figure 6B The configuration of the rotor core 50 and the magnetic flux shielding jig 350 according to the third embodiment of the present invention will be described. Figure 6A It is a perspective view schematically showing the arrangement of the magnetic flux shielding jig 350 . Figure 6B It is a perspective view schematically showing the arra...

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Abstract

The invention provides a rotor core heating device and a rotor core shrink-fitting method. The rotor core heating device (100) is configured to heat an inner peripheral side surface and an outer peripheral side surface of a rotor core (150) through induction heating. The rotor core has a hollow cylindrical shape. The rotor core heating device includes a first coil (110), a second coil (120) and a magnetic flux shielding jig (170). The first coil is disposed inside the rotor core and is configured to heat the inner peripheral side surface of the rotor core through induction heating. The second coil is disposed outside the rotor core and is configured to heat the outer peripheral side surface of the rotor core through induction heating. The magnetic flux shielding jig has a hollow cylindrical shape and is disposed opposite a first end surface of the rotor core with a gap provided between the first end surface and the magnetic flux shielding jig in an axial direction of the rotor core.

Description

technical field [0001] The invention relates to a rotor core heating device and a rotor core thermal matching method. Background technique [0002] The rotor core is a part of the motor. The motor is constituted by a shaft rotatably supported in a sealed case and having a rotor integrally formed at one end, a rotor core fitted externally to the shaft, and a stator fixed to a rotor facing the outer peripheral surface of the rotor. Seal the housing side and have a predetermined gap between the stator and rotor. [0003] To make a motor, the rotor core needs to be fitted onto the shaft from the outside. The shrink fit method is considered as a method for fitting the rotor core from the outside. The rotor core is heated by the rotor core heating device when the rotor core is heat-fitted onto the shaft, and the rotor core is cooled after fitting the heated rotor core onto the shaft. [0004] For example, Japanese Patent Application Publication No. 07-022168 (JP07-022168A) and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K15/12H02K15/02
CPCH02K15/12H02K15/02
Inventor 二瓶敦孝松下将之山田耕司浦野广晓吉田康平
Owner TOYOTA JIDOSHA KK