High-precision motor rotor iron core stacking mold and stacking forming method of rotor iron core

Abstract

The invention relates to a high-precision motor rotor iron core stacking mold and a stacking forming method of the rotor iron core. The mold comprises a lower pressing plate, an upper pressing plate,a plurality of special-shaped positioning keys, a plurality of limiting blocks and a size sheet; the two pressing plates, the plurality of special-shaped positioning keys and the plurality of limitingblocks are assembled to form a motor rotor iron core stacking limiting structure; the size sheet is matched with the stacking limiting structure and is used for detecting the axial size of the motorrotor rotor core; the upper pressing plate and the lower pressing plate are connected through a plurality of bolts; a rotor iron core installation space is formed between the two pressing plates; andthe lower end and the upper end of a rotor shaft sleeve are inserted into an installation spigot in the center of the lower pressing plate and an installation hole in the center of the upper pressingplate respectively so as to be positioned; the plurality of special-shaped positioning keys are inserted into upper inserting holes and lower inserting holes and are matched with the groove holes of punching sheets in an inserting mode, so that the punching sheets can be aligned; the plurality of limiting blocks are arranged on the bolts in a sleeving mode, so that the axial size of the iron corecan be controlled. According to the high-precision motor rotor iron core stacking mold and the stacking forming method of the rotor iron core of the invention, all the punching sheets of the rotor iron core are ensured to be integrally aligned, the axial dimension precision and consistency of the rotor iron core are ensured, and the two end surfaces of the iron core are ensured to be parallel.

Description

technical field [0001] The invention belongs to the field of torque motor assembly, and in particular relates to a high-precision motor rotor core stacking mold and a rotor core stacking forming method. Background technique [0002] The rotor core is an important part of the torque motor, mainly composed of stacked punching plates 200 and rotor sleeve 100, see figure 1 , The iron core cooperates with the winding to form a regular magnetic field when the current exists, so as to realize the special function of the motor. The stacking quality of the rotor core greatly affects the performance of the motor. The lamination coefficient γ of the iron core has the following relationship with the punching thickness d, the number of punching n, and the actual size L of the iron core: [0003] [0004] The value that plays a role in the performance of the motor is the effective iron core size n*d, but due to a certain deviation in the thickness d of the punching sheet, this value ...

AI Technical Summary

Problems solved by technology

The advantages of this method are high efficiency and fast stacking speed, but the resulting iron core slots are not neat, which has little effect on motors with low precision, but for high-precision iron cores, slight misalignment in the slots will cause greater damage. The accuracy deviation of

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