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High axial bearing stepping linear motor

A linear motor, axial technology, applied in the direction of electrical components, electromechanical devices, propulsion systems, etc., can solve the problems of motor power density reduction, long axial space, etc., achieve small axial play and clearance, and improve linear positioning accuracy Effect

Inactive Publication Date: 2017-01-11
SHANGHAI MOONS ELECTRICAL APPLIANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Another method is to design double-row angular contact bearings into the motor to improve the bidirectional axial load bearing capacity, but the disadvantage of this method is that double-row bearings need to be installed in the motor at the same time, which requires a long axial space. Thus, the power density of the motor is greatly reduced

Method used

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  • High axial bearing stepping linear motor
  • High axial bearing stepping linear motor
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Examples

Experimental program
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Effect test

Embodiment

[0030] Such as figure 1 As shown, the high axial load stepping linear motor includes: rotor 1 with nut; four-point angular contact bearing 2 (also known as four-point contact ball bearing), installed at both ends of the rotor; stator 3, set opposite to the rotor .

[0031] The four-point angular contact bearing 2 is provided with one, two or four. The four-point angular contact bearing 2 includes an outer ring, an inner ring and balls, the outer ring is arranged outside the inner ring, and the balls are installed between the outer ring and the inner ring.

[0032] Both the outer ring and the inner ring are provided with arc-shaped raceways for ball rolling. The four-point angular contact bearing is a single-groove quadrangular contact bearing, a double raceway angular contact bearing or an outer groove quadrangular contact bearing.

Embodiment 2

[0034] Such as figure 2 As shown, the rotor is the rotor 4 with a screw, and the rest are the same as in Embodiment 1.

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Abstract

The present invention relates to a high axial bearing stepping linear motor. The motor comprises a rotor, a four-point angular contact bearing that is mounted on both ends of the rotor, and a stator disposed opposite to the rotor. Compared with the prior art, the invention has the advantages of high axial load and long service life.

Description

technical field [0001] The invention relates to a motor, in particular to a stepping linear motor with high axial load. Background technique [0002] Existing stepping motors all adopt traditional deep groove ball bearings to bear the motion load mainly of radial load. And because of its simple structure, the deep groove ball bearing can be designed to be smaller in size, so it can be well used in stepping motors. But at present, stepping linear motors that convert rotary motion into linear motion are increasing rapidly. The main working load of this new type of stepping motor is bidirectional axial load. In this case, how to solve the axial load of deep groove ball bearings The shortcoming of insufficient load capacity has become the primary problem that needs to be solved by each manufacturer's technology research and development. [0003] There are two existing solutions: one is to design the plane thrust bearing into the motor. Although this method can improve the axia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K41/03
Inventor 曾凯何勇
Owner SHANGHAI MOONS ELECTRICAL APPLIANCE
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