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Linear motor

A technology of linear motors and stator coils, applied in electromechanical devices, electrical components, electric components, etc., can solve problems such as limited manufacturing accuracy of products

Pending Publication Date: 2018-05-11
苏州盛拓半导体科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current linear motors still do not solve the problems of thrust fluctuation and high cogging force of the motor, which leads to limited product manufacturing accuracy

Method used

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  • Linear motor
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Embodiment Construction

[0033] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so as to better understand the purpose, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but only to illustrate the essence of the technical solutions of the present invention.

[0034] In the following description, for the purposes of explaining the various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that an embodiment may be practiced without one or more of these specific details. In other instances, well-known devices, structures and techniques associated with the present application may not have been shown or described in detail in order to avoid unnecessarily...

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Abstract

The application discloses a linear motor. The linear motor is provided with a stator, a rotor and a guide rail, wherein the guide rail is arranged on the stator; the rotor is arranged to move relativeto the stator along the guide rail; the stator is provided with a stator coil unit; the rotor is provided with a permanent magnet unit; the permanent magnet unit comprises back iron and a permanent magnet array arranged on the back iron; the permanent magnet array is provided with a primary magnet and an auxiliary magnet arranged on at least one end of the permanent magnet unit; the auxiliary magnet is located on the outer side of the primary magnet on the outermost side of the permanent magnet array; and the auxiliary magnet is narrower than the primary magnet. The linear motor disclosed bythe invention is small in thrust ripple and cogging force.

Description

technical field [0001] The present invention relates to electrical machines, in particular to linear electrical machines. Background technique [0002] With the development of manufacturing technology in the direction of high productivity and high precision, precision positioning control systems are widely used in semiconductor manufacturing, printing of photovoltaic cells, circuit board printing, screen printing and other industries, providing higher speed, positioning stability and Processing flexibility and other functions. [0003] However, the current linear motors still do not solve the problems of thrust fluctuation and high cogging force of the motor, which leads to limited product manufacturing accuracy. Contents of the invention [0004] The object of the present invention is to provide a linear motor capable of optimizing and reducing thrust fluctuation and cogging force of the motor. [0005] To achieve the above object, the present invention provides a linea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K41/03
CPCH02K41/031
Inventor 陈庆生
Owner 苏州盛拓半导体科技有限公司
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