Positioning tooling and rotor lamination assembly method

Abstract

The invention relates to the field of magnetic suspension bearings, in particular to a positioning tool and a rotor lamination assembly method. The positioning tool provided by the present invention includes an expansion assembly and a compression assembly; the expansion assembly includes an axial positioning member and a radial positioning member, the radial positioning member can pass through the shaft hole of the lamination stack, and the radial positioning member can The hole wall of the shaft hole generates radial force, the radial positioning member has opposite first ends and second ends along the axial direction of the lamination stack, the pressing component is detachably matched with the lamination stack, and the pressing component can The lamination stack generates a pressing force in the axial direction; the first end and the second end of the radial positioning member are located on both sides of the pressing assembly, respectively, and the axial positioning member is connected to the position of the radial positioning member close to the first end , the pressing component generates a force along the direction from the second end to the first end on the axial positioning member. The stacked assembly of the lamination stack can be simplified.

Description

technical field [0001] The invention relates to the field of magnetic suspension bearings, in particular to a positioning tool and a rotor lamination assembly method. Background technique [0002] The magnetic suspension bearing rotor is composed of six parts: sensor lamination pressure ring, sensor lamination, magnetic bearing lamination pressure ring, magnetic bearing lamination, bottom positioning ring, and rotor mandrel. In the conventional assembly method, the lamination positioning sleeve cup plays a role To support the positioning function, the sensor lamination pressure ring, the sensor lamination, the magnetic bearing lamination pressure ring, and the magnetic bearing lamination are placed in the inner cavity of the lamination positioning sleeve cup in turn, and then axially compressed after the placement is completed, and then put The sensor lamination pressure ring and the lamination positioning sleeve cup are welded to make them locked and fixed to form a rotor a...

AI Technical Summary

Problems solved by technology

[0003] In this assembly method, the laminated positioning sleeve cup is only used in the assembly process, and the finished product will be processed and removed, and this part is a consumable part. The cost of the magnetic levitation motor rotor will also increase, resulting in waste of cost.

Moreover, if assembly defects are found after the lamination welding of the rotor assembly is completed, such as assembly deviations in the number of laminations, foreign objects or gaps between the laminations, deviations in the order of the laminations and the pressure ring, etc., the welding points need to be repaired. After cutting and readjusting correctly, welding is performed. The process of removing solder joints requires machine tools, which cannot be completed manually, and the lamination positioning sleeve is a thin-walled part, which can easily damage the precision of this part and cause it to be scrapped. The maintenance process is time-consuming and laborious. Cause cost waste and delay

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