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Cylindrical linear motor with ring gears of different widths for axial feed

A linear motor and axial feed technology, applied in the direction of electric components, electromechanical devices, electrical components, etc., can solve the problems of low motor output thrust, large number of cogging slots, low winding factor, etc., to improve the winding factor, install and connect Simple, reduce the effect of output thrust fluctuation

Inactive Publication Date: 2014-03-12
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional primary iron core cylinder of this motor has a large number of slots, complex structure, and difficult processing; the traditional double-layer distributed winding coil connection is complicated, and the winding factor is low, which makes the motor output thrust low.

Method used

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  • Cylindrical linear motor with ring gears of different widths for axial feed
  • Cylindrical linear motor with ring gears of different widths for axial feed
  • Cylindrical linear motor with ring gears of different widths for axial feed

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Embodiment Construction

[0024] The composition structure and electromagnetic performance of a cylindrical linear motor for axial feeding of unequal-width gear rings according to the present invention will be described in detail below in conjunction with the accompanying drawings:

[0025] refer to figure 1 As shown, a cylindrical linear motor for axial feeding of unequal-width toothed rings in the present invention mainly includes a primary yoke sleeve 4, a large toothed ring 5, a small toothed ring 6, a washer 8, a winding coil 9, Secondary iron core 10 and secondary magnetic steel 11. The cylindrical linear motor is arranged at the rear end of the main shaft 1, and the electromagnetic thrust output by the cylindrical linear motor enables the main shaft 1 to achieve axial feed while rotating. Two symmetrical feather keys 3 are arranged on the outer side of the main shaft 1 for the movement guide of the axial feed of the main shaft 1 .

[0026] combine figure 1 and figure 2 As shown, the primary...

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Abstract

The invention relates to a cylindrical linear motor with ring gears of different widths for axial feed. A motor primary part comprises a primary iron core gear groove structure of the spaced unequal-width ring gears, which is formed by sequentially placing large ring gears, washers and small ring gears in the axial direction in a combined way at the inner side of a primary yoke part sleeve, wherein phase winding coils are placed at the two sides of the large ring gears at intervals and are connected axially in series. A motor secondary part comprises a secondary core and secondary magnetic steel, which are alternatively placed at outer circle of a spindle in the axial direction. Electromagnetic thrust generated between the motor primary part and the motor secondary part drives the spindle to implement axial feed. The motor is simple in structure, convenient to machine, easy to connect the winding coils, large in output electromagnetic thrust and small in thrust fluctuation. Furthermore, a slide bar type micro pulse displacement sensor can accurately measure the linear location and speed of the motor, which lays a foundation for the implementation of quick response and feedback control at high precision. The cylindrical linear motor can be applied to axial feed of machining for various high-speed high-precision machine tools.

Description

technical field [0001] The invention relates to the field of feeding drive for the main shaft of a cutting machine tool, in particular to a cylindrical linear motor with unequal-width gear rings for axial feeding. Background technique [0002] In today's high-end CNC processing machine tools, cylindrical permanent magnet linear motors are used to replace the "rotary servo motor + ball screw" spindle axial feed method, which has the advantages of high linear speed, fast instantaneous response, and high linear positioning accuracy, and is becoming more and more popular. Wide range of applications. Sine wave linear permanent magnet motors have high power density and precise control performance, making them the first choice for cylindrical linear motors for spindle feed drives. However, the traditional primary iron core cylinder of this motor has a large number of slots, complex structure, and difficult processing; the traditional double-layer distributed winding coil connectio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K41/03B23Q5/28B23Q5/32
Inventor 赵升吨梁锦涛范淑琴段柳浠
Owner XI AN JIAOTONG UNIV
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