Method for manufacturing stator core

Abstract

The invention discloses a method for manufacturing a stator core. The stator core comprises a plurality of iron core pieces, and a plurality of iron core pieces are stacked in the axial direction of the stator core, each iron core piece is formed into a ring structure and comprises a plurality of punch segments arranged in turn along circumferential direction one after the other, a seam formed between two adjacent punch segments, along the axial direction of the stator core, the seam of the nth layer and the seam of the n+m layer are interlaced, wherein n, m both are positive integers, and n and m satisfy n> / =1 and m> / =1, respectively. The manufacturing method comprises the steps of: sequentially punching a plurality of punch segments in a linear direction on the steel sheet, and sequentially arranging a plurality of punch segments in order to form an iron core; and stacking the plurality of iron core pieces in the axial direction of the iron core chip. According to the manufacturing method of the stator core, the process is simple and easy to implement, the material utilization rate of the steel plate is effectively improved, the material cost of the stator core is reduced, and the transportation, circulation and access of the stator core are facilitated.

Description

technical field [0001] The invention relates to the technical field of motor manufacturing, in particular to a method for manufacturing a stator core. Background technique [0002] The segmented iron core is a commonly used stator core structure, so that the stator core can open the winding space of the stator winding, so as to fill more copper wires in the stator slot of the stator core to improve the utilization of the stator slot, thereby Reduce the resistance of the stator winding, thereby increasing the efficiency of the motor to save electricity. [0003] In the related art, there are the following problems in the manufacturing process of the stator iron core: the stator iron core generally needs at least 12 segmented iron cores, and at least 12 segmented iron cores need to be produced, transported, and taken to complete the manufacture of a stator iron core. The core makes the manufacturing efficiency of the stator core low and the manufacturing cost high; when stamp...

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Problems solved by technology

[0003] In the related art, there are the following problems in the manufacturing process of the stator iron core: the stator iron core generally needs at least 12 segmented iron cores, and at least 12 segmented iron cores need to be produced, transported, and taken to complete the manufacture of a stator iron core. The core makes the manufacturing efficiency of the stator core low and the manufacturing cost high; when stamping the stamping segment, it is necessary to stamp the rotating structure at the same time, which makes the structure of the stamping die and stamping equipment complex and the manufacturing cost is high; the utilization rate of the steel plate is low, making the stator iron core Core material cost is higher

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