Surface type permanent magnet rotor assembling tool with inclined wedge expansion structure, and assembling method for surface type permanent magnet rotor

Abstract

The invention relates to a surface type permanent magnet rotor assembling tool with an inclined wedge expansion structure. The surface type permanent magnet rotor assembling tool comprises hoops, an axial fixing tool, and a tool iron core, wherein one end of the tool iron core is in contact with the end plane of a deep groove end of a rotor iron core inclined wedge groove; the tool iron core and a rotor iron core are consistent in shapes; the length of the tool iron core is greater than or equal to an axially-pushed process distance of the inclined wedge; the inclined wedge groove of the tool iron core is an extension inclined groove of the rotor iron core inclined wedge groove with consistent inclination; an upper pressing plate, the rotor iron core, the tool iron core and a bottom plate are fixed together through pull rods; each hoop adopts a circular annular structure; and the inclined wedges and the permanent magnets are radially fixed by tightening screws. According to the surface type permanent magnet rotor assembling tool, by adding the tool iron core, the axial displacement of the permanent magnets on the rotor iron core becomes possible; due to the added axial fixing tool, the assembling, axial pressing and assembling, and radial outward expansion of the permanent magnets are realized, and the problem of difficulty existing in assembling the permanent magnet rotor with the inclined wedge structure is solved. The invention also relates to an assembling method for the surface type permanent magnet rotor with the inclined wedge expansion structure.

Description

technical field [0001] The invention relates to the field of motor manufacturing, in particular to a surface-type permanent magnet rotor assembly tool and an assembly method with a wedge expansion structure. [0002] technical background [0003] Restricted by the structure and the mechanical properties of electrical materials, the rotor structure of high-speed permanent magnet motors generally does not adopt the conventional embedded type, but mostly adopts the surface type. At present, surface-type permanent magnet rotors generally use composite materials to wind and fix the permanent magnets on the surface of the rotor core. Since the elastic modulus of composite materials is relatively small, the prestress that can be applied by winding is also small. increase, the centrifugal force corresponding to the high-speed rotation of the permanent magnet increases, resulting in an increase in the deformation of the composite material wound on the outer surface of the permanent ma...

AI Technical Summary

Problems solved by technology

Therefore, the previous assembly method is not suitable for the assembly of the surface permanent magnet rotor with wedge expansion structure

Images