Reluctance type axial flux motor rotor and forming method

Abstract

The invention provides a reluctance type axial flux motor rotor and a forming method, and the forming method comprises the steps: (a) coiling a punched and sheared strip-shaped silicon steel sheet to form an annular silicon steel disc which is provided with a plurality of groups of magnetic isolation grooves which are arranged at intervals along the circumferential direction, and defining a silicon steel block between two adjacent groups of magnetic isolation grooves, the number of each group of magnetic isolation grooves is two, the magnetic isolation grooves are oppositely formed in the two sides of the axial direction of the silicon steel disc, and a connecting rib for connecting every two adjacent silicon steel blocks is defined between the two magnetic isolation grooves of each group; and (d) rotor supports are clamped on the two axial sides of the silicon steel disc respectively to form a rotor disc, the rotor supports are embedded in the magnetic isolation grooves, and the axial end faces of the silicon steel blocks are exposed. The manufacturing efficiency and reliability of the silicon steel disc are improved, the consistency of the size, electromagnetism and the position of each silicon steel block on the rotor disc is ensured, and industrial batch production is further facilitated.

Description

technical field [0001] The invention relates to the field of axial flux motors, in particular to a reluctance type axial flux motor rotor and a forming method. Background technique [0002] Axial flux motors are widely used in electric vehicles, general industries and household appliances due to their advantages of small axial size, high torque density, high power density and high efficiency. Existing axial flux motors generally use silicon steel sheets as the lamination material of the rotor and stator. During the forming process of the rotor, silicon steel sheets are stamped and cut to form multiple sheets of different widths, and then the multiple sheets are sequentially pressed according to The width is gradually increased to form a plurality of fan-shaped silicon steel blocks of the same shape, and finally the multiple silicon steel blocks are arranged on the rotor support in a circular interval, and the multi-layer sheets of each silicon steel block are along the rotor...

AI Technical Summary

Problems solved by technology

[0003] It can be seen from the above that each silicon steel block requires multiple sheets of different widths to be laminated, which not only has low production efficiency, but also cannot guarantee the consistency of each silicon steel block, and even causes eddy current loss, which reduces the reliability of the rotor.

In addition, the silicon steel block needs to be assembled with the rotor bracket one by one, which also affects the forming efficiency of the rotor, making it impossible to carry out industrialized mass production

Images