A reciprocating cylinder linear motor

Abstract

The invention discloses a reciprocating motion cylindrical linear motor which comprises a rotor, a roller assembly, a stator ring, a stator pressing sleeve, stator supports, a cooling sleeve, brackets and end covers. The stator pressing sleeve is sleeved with the cooling sleeve, and the cooling sleeve makes contact with the stator pressing sleeve; the two ends of the stator pressing sleeves are each provided with one end cover, the stator supports are arranged between the cooling sleeve and the end covers, the brackets are arranged on the sides, away from the stator support, of the end covers, the rotor is arranged inside the stator ring, a groove is formed in the outer surface of the stator ring, and a coil is arranged inside the groove; the roller assembly is arranged between the rotor and the brackets. The stator and the rotor are not in contact and are not abraded, uniformity of an air gap between the rotor and the stator ring in the three-dimensional direction is ensured, rolling friction exists between the roller assembly and the brackets, damage is not likely to be caused, and replacement is convenient; the cooling sleeve completely covers the outer surface of the stator pressing sleeve, heat is emitted out in time, the influence caused by stress of the rotor on the stator, the coil and other parts is avoided, overhauling and installation are convenient and reliable, and safety operation of the reciprocating motion cylindrical linear motor is ensured.

Description

technical field [0001] The invention relates to the technical field of special motors, in particular to a reciprocating cylinder linear motor. Background technique [0002] Cylindrical linear motors are more and more widely used because they can directly realize reciprocating linear motion without an intermediate mechanism, have a simple structure, small motion inertia, and are easy to manufacture and maintain. But in fact, there are many defects in the application examples of reciprocating cylindrical linear motors: (1) the wear of the mover and stator; (2) the uniformity of the air gap between the mover and stator is difficult to ensure reliably; (3) for large Thrust long-stroke horizontal cylindrical linear motors also generally have the problem of excessive starting torque of the linear motor caused by the mechanical resistance caused by the sinking and eccentric wear of the mover under the action of gravity; (4) motor heating; (5) stator ring, The installation of the c...

AI Technical Summary

Problems solved by technology

But in fact, there are many defects in the application examples of reciprocating cylindrical linear motors: (1) the wear of the mover and stator; (2) the uniformity of the air gap between the mover and stator is difficult to ensure reliably; (3) for large Thrust long-stroke horizontal cylindrical linear motors also generally have the problem of excessive starting torque of the linear motor caused by the mechanical resistance caused by the sinking and eccentric wear of the mover under the action of gravity; (4) motor heating; (5) stator ring, The installation of the coil is very inconvenient, and it is not easy to repair after the coil has a problem

[0003] Chinese patent 201410741563.6 discloses "a reciprocating cylindrical linear motor with balanced wear of the mover and stator", which balances the wear of the mover and stator by rotating the mover during reciprocating motion, and does not fundamentally solve the problem of the mover. wear problem

[0006] Chinese patent 201210557059.1 discloses "Stator Winding and Winding Method for Cylindrical Linear Motor" to wire the coils by connecting adjacent coils end to end. This method is difficult to judge which group of coils has a problem. It needs to be dismantled and inspected one by one, which is time-consuming and laborious

[0007] Low-speed high-thrust cylindrical linear coils generally have a large number of coils, and when they are combined together, they are very long. It is easy to cause insulation damage when they penetrate into the overall cylindrical shell, and it is difficult to ensure uniform compression between each coil group.

Images