Overall circle splicing method for block spliced type motor stator

Abstract

The invention discloses an overall circle splicing method for a block spliced type motor stator. The method comprises the following steps that 1, the inner side arc faces of stator core blocks are in tight fit with the outer side column face of an assembling tool, then, an outer hoop tool is adopted for hooping the stator core blocks, and therefore all the stator core blocks are spliced together to form a block spliced type stator core; 2, a motor shell at the temperature of 220-240 DEG C is arranged to the outer column face of the block spliced type stator core in a heat sleeving mode, then, the outer hoop tool is replaced, and at the same time, the assembling tool is still kept on the block spliced type stator core; 3, after the motor shell is cooled, the assembling tool and the motor stator are separated, and the block spliced type motor stator core is kept in the motor shell. By means of the assembling tool, it is ensured the inner circle of the block spliced stator is always in tight fit with the assembling tool in the cooling shrinkage process of the motor shell, and therefore the problem that the stator inner circle roundness tolerance is large due to the fact that shrinkage force is uneven is avoided.

Description

technical field [0001] The invention belongs to the field of block-type motors, and more specifically relates to a method for integrally assembling a stator of a block-type motor into circles. Background technique [0002] The block-type motor is a motor in which the integral motor stator is divided into several stator blocks according to the number of stator slots, and then assembled into a complete circular structure. The advantage of this kind of motor is that due to the winding on each stator silicon steel sheet, the slot fill rate of the coil is higher than that of the integral motor, and the end of the coil is shorter than that of the integral motor, which is of great benefit to the electromagnetic performance of the motor. However, in the actual production of this kind of motor, when the pieces are combined into a complete circle, due to reasons such as uneven force on the outer circle of the stator pieces, it will be difficult to control the inner circle tolerance of...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the above defects or improvement needs of the prior art, the present invention provides a method for rounding the stator of a block-type motor. On the premise of not using additional welding and other processes, by using a combined tooling, it is ensured that each part of the stator is The tight fit between the blocks and the tooling after splicing solves the problem of the large tolerance of the inner roundness of the block stator caused by the uneven shrinkage force of the casing on the block stator during the heat-shrinking process of the motor casing, which not only ensures the motor The production process is easy to realize, and can improve the inner roundness tolerance of the stator by 3-4 tolerance levels

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