Linear motor

Abstract

A linear motor comprises two slideways which are arranged in parallel, wherein a group of primary modules are respectively fixed on the inner sides of the two slideways, a linear sliding piece is arranged between the two slideways, two groups of secondary modules which are respectively opposite to the two groups of primary modules are fixed on the outer side of the linear sliding piece, the gaps between the two groups of opposite secondary modules and the primary modules are equal, and the gaps between the secondary modules and the primary modules are adjustable. The motor has the characteristic of adjustable motor gap, and the width of the motor air gap can be adjusted according to specific use requirements, so that large-range adjustment of motor thrust is realized; the air gap adjustingdevice has a modular characteristic, is integrally divided into a primary module, a secondary module, a linear sliding piece and a slideway, can conveniently adjust an air gap through an adjusting mechanism on the linear sliding piece, and is convenient to maintain, repair or disassemble and assemble.

Description

technical field [0001] The invention belongs to the field of motors, and in particular relates to a linear motor. Background technique [0002] A linear motor is a transmission device that can directly perform linear motion without any intermediate conversion mechanism under the drive of electric energy. Structurally, a linear motor can be regarded as a cylindrical rotary motor that is radially dissected into a flat plate. Generally, the part that evolves from the stator after deployment is called the primary, and the part that evolves from the rotor is called the secondary. . [0003] For linear motors, especially high-thrust linear motors, the primary and secondary are mostly clearance fits. The thrust of the motor is generally negatively correlated with the gap distance between the primary and secondary, the smaller the gap between the two, the greater the thrust of the motor. [0004] In practical applications, especially in electromagnetic ejection applications, load...

AI Technical Summary

Problems solved by technology

Traditional linear motors, whether they are synchronous motors or asynchronous motors, due to the limitations of manufacturing process and design specifications, under the condition of a certain motor structure, the gap between the primary and secondary remains unchanged, and the output of the motor is closely related to the current and voltage. If you want to change the thrust of the motor, you must change the input current or increase the voltage level accordingly. In this way, the requirements for the input power and withstand voltage of the system or equipment are very high, which greatly increases the difficulty of work.

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