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Electric principal shaft with composite stator structure

A composite stator and motorized spindle technology, applied in the magnetic circuit shape/style/structure, electromechanical devices, electrical components, etc., can solve the problems of low thermal conductivity of air, hinder the heat conduction of the motorized spindle to the outside, and improve the thermal conductivity, The effect of compact structure and increased contact area

Inactive Publication Date: 2009-05-20
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology has the following disadvantages: (1) There is a gap in the cooperation between the electric spindle stator and the stator shell. Due to the low thermal conductivity of the air, it hinders the heat conduction inside the electric spindle; (2) The stator shell cannot fully transfer the heat inside the electric spindle. heat conduction out

Method used

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  • Electric principal shaft with composite stator structure
  • Electric principal shaft with composite stator structure
  • Electric principal shaft with composite stator structure

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Embodiment Construction

[0023] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0024] Such as figure 1 As shown, an electric spindle with a composite stator structure with high-efficiency heat dissipation features, the electric spindle is composed of a lock nut for the inner ring of the front bearing 1, a shoulder for the outer ring of the front bearing 2, a corrugated gasket 3, a front bearing 4, a front cover 5, and a front end Bearing outer ring 6, sealing ring 7, housing 8, stator coil 9, cooling channel 10, composite stator 11, rotor shaft 12, rear end bearing outer ring locking sleeve 13, constant pressure spring 14, rear end bearing adjustment locking ring 15. Spring retaining ring 16, rear end bearing 17, rear end bearing support 18, rear end bearing inner ring lock nut 19, rear baffle plate 20, and rear end cover 21 form. The composite stator 11 is composed of a stator heat conducting sleeve 11-1 and a stator...

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Abstract

The invention discloses an electric spindle with a composite stator structure, which comprises an electric spindle shell sleeved on the outer surface of an electric-spindle composite stator, a plurality of sets of electric-spindle stator coils, a rotor shaft positioned in the rotation center of the electric spindle, as well as the electric-spindle composite stator which surrounds an electric-spindle rotor shaft and has a clearance with the electric-spindle rotor shaft, wherein the composite stator consists of a stator heat-conducting sleeve and a stator, and the rotor shaft consists of a spindle and a motor rotor arranged in the electric spindle. The inner circle surface of the electric spindle shell is closely combined with the outer circle surface of the electric-spindle composite stator; a channel on the outer circle surface of the electric-spindle composite stator and the inner circle surface of the electric spindle shell form a cooling channel; and a cooling medium takes away heat produced during high-speed rotation of the electric spindle through the cooling channel. The electric spindle has the advantages of simple structure and high heat dissipation efficiency.

Description

technical field [0001] The invention relates to the technical field of electric spindles, in particular to an electric spindle with a composite stator structure with high-efficiency heat dissipation. Background technique [0002] Electric spindle technology integrates the motor in the spindle unit to achieve high-speed rotation. When the electric spindle is running at high speed, a large amount of heat will be generated due to the eddy current of the stator, the high-speed airflow inside, and the bearing. If the heat is not dissipated in time, it will not only cause the temperature rise of the spindle, affect the accuracy of the electric spindle, but also cause damage to the bearing. Therefore, effective cooling measures must be taken. Most of the existing cooling forms use pumps to pump the cooling medium into the circulating water channel of the spindle shell to take away the heat and maintain the temperature stability of the spindle during the machining process. In the ...

Claims

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Application Information

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IPC IPC(8): H02K9/22H02K1/12C09K5/00H02K1/02
CPCY02P20/10
Inventor 李伟光董海平陈刚刘铨权蒲洪彬
Owner SOUTH CHINA UNIV OF TECH
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