Permanent magnet motor rotor assembly jig and method thereof

Abstract

The present invention provides a permanent magnet motor rotor assembly jig and its method. The permanent magnet motor rotor assembly jig is used for passing a rotating shaft along an assembly direction and assembling on a first end rotor core and a first end rotor core. The two-end rotor core includes a first end positioning component, a plurality of positioning connecting parts and a second end positioning component. The first end positioning component is used for fixing the first end rotor core. The second end positioning component is used for fixing the second end rotor core. The positioning connector connects the first end positioning component and the second end positioning component. Wherein, a first projection central axis of each first positioning member of the first end positioning assembly along an assembly direction deviates from a second projection center of each second positioning member of the second end positioning assembly along an assembly direction axis.

Description

Technical field [0001] The present invention relates to a fixture and method, particularly to a permanent magnet motor rotor assembly and method of fixture. Background technique [0002] In order to reduce the permanent magnet motor torque Dayton (cogging torque), a common way to make the rotor core is divided into several segments, each segment rotated by a certain angle between the rotor core, thus allowing each segment of the rotor core close to the moments cancel each other Dayton , to reduce the effectiveness of Dayton moments. [0003] See Figure 1 to 3 ,in, figure 1 Is a schematic view with the key shaft and the prior art; figure 2 The shaft is a schematic view of the first rotor core with the key of the prior art; and, image 3 Is a schematic view of the rotor segment assembly chute prior art. As shown, a segmented rotor assembly chute PA1, comprising a shaft PA11, a plurality of projections keys of PA12 (designated herein wherein only one illustrated) and a plurality of r...

AI Technical Summary

Problems solved by technology

[0006] However, the manufacturing process of using the convex key PA12 and the keyway PA111 is cumbersome and time-consuming, and the creation of the keyway PA111 and the engaging groove increases the manufacturing cost

Moreover, the design of the convex key PA12 and the keyway PA111 usually makes it impossible to disassemble the rotor cores PA13a, PA13b, and PA13c after assembly, so maintenance cannot be performed. If the segmented chute rotor assembly PA1 is damaged, only the entire segment can be replaced. Sloped rotor assembly PA1, instead of removing rotor cores PA13a, PA13b, PA13c, convex key PA12 and keyway PA111 for inspection and maintenance

In addition, the opening of the engaging slots will also cause the unbalance of the rotor cores PA13a, PA13b, and PA13c

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