Construction features of cylindrical linear asynchronous motors

Abstract

Cylindrical linear induction motors are used in the electric drive of manipulators and industrial robots due to their advantages, the main of which are simplicity of design, high manufacturability, unification of units and parts. They provide direct linear movement of the executive body of the manipulator without the use of circular to linear converters. These motors have a closed design, in which the stator winding is protected from direct environmental influences and can be sealed. They are convenient for installation, dismantling and repair. The article describes the design features of linear asynchronous cylindrical motors. A constructive variety of engines is noted, which is due to a specific mechanism with linear movement of the executive body. A review of literature showed that there is no single approach to the name of engines of this type. Different sources use the following names: three-phase cylindrical magnetofugal motor, coaxial linear motor, cylindrical linear asynchronous motor, tubular linear asynchronous motors. The decomposition of the structure. The main structural elements of the engine include the following: a stator, a runner, a runner centering system and an engine cooling system. In practice, engine design options with a fixed and a movable stator are used. In production mechanisms, the following options are used for the design of the stator magnetic circuit: longitudinal plates with grooves; continuous cross washers; transverse sets of washers alternating with stator winding coils, in which longitudinal sets of plates are installed. The three-phase winding of the motor stator is made in the form of coils placed in the stator magnetic circuit and installed in a tubular housing. The decomposition of the structure. The main structural elements of the engine include the following: a stator, a runner, a runner centering system and an engine cooling system. In practice, engine design options with a fixed and a movable stator are used. In production mechanisms, the following options are used for the design of the stator magnetic circuit: longitudinal plates with grooves; continuous cross washers; transverse sets of washers alternating with stator winding coils, in which longitudinal sets of plates are installed. The three-phase winding of the motor stator is made in the form of coils placed in the stator magnetic circuit and installed in a tubular housing