Motor coil reshaping apparatus

Abstract

A motor coil reshaping apparatus comprises an upper module assembly, a lower module assembly and a hydraulic actuator. A plurality of side pressure module guide rails are mounted respectively on the left and right sides of a top board of the upper module assembly. A hinged support of each side pressure module fits in a sliding way with the corresponding side pressure module guide rail respectively. Each side pressure module also connects with a corresponding resetting mechanism mounted on the side pressure module guide rail respectively. Two straight-edge upper pressure modules are arranged respectively on the front and back sides of the top board. A plurality of lower module guide rails are mounted respectively on the left and right sides of the base of the lower module assembly. A first fulcrum bearing and a second fulcrum bearing fit in a sliding way with the corresponding lower module guide rails respectively. The hinged supports of a plurality of lower side guide frames are fixed on the first fulcrum bearing and the second fulcrum bearing correspondingly. Two straight-edge lower pressure modules are arranged respectively on the front and back sides of the base. The hydraulic actuator is fixed respectively on the left and right sides of the base of the lower module assembly. The apparatus of the invention is not only simple in structure and high in work efficiency, but also can guarantee the uniformity of the motor coil.

Description

technical field [0001] The invention relates to a tooling used in the process of manufacturing high-power traction motors, in particular to a shaping device for high-power traction motor coils, which belongs to the field of motor manufacturing. Background technique [0002] In the manufacturing process of high-power traction motor coils, the coils need to be expanded. When the existing domestically-made stretching machines are used for stretching the coils of high-power traction motors, there are the following disadvantages: first, due to the unstable hydraulic system, the top arc device has only one fulcrum, so the strength is not enough when used; second, the stretching arm The running speed is inconsistent, resulting in a large difference in the size and shape of the expanded coils, and the consistency cannot be guaranteed; third, because the bolts of the mechanical clamp are easy to loosen, the accuracy of the equipment is poor, so it cannot meet the subsequent wire embe...

AI Technical Summary

Problems solved by technology

When the existing domestically-made stretching machines are used for stretching the coils of high-power traction motors, there are the following disadvantages: first, due to the unstable hydraulic system, the top arc device has only one fulcrum, so the strength is not enough when used; second, the stretching arm The running speed is inconsistent, resulting in a large difference in the size and shape of the expanded coils, and the consistency cannot be guaranteed; third, because the bolts of the mechanical clamp are easy to loosen, the accuracy of the equipment is poor, so it cannot meet the subsequent wire embedding process Requirements for minimum clearance between coils

Therefore, in the expansion process, in order to ensure the size and shape of the coil fillet, it is necessary to perform manual knocking and shaping, and this will easily damage the coil insulation layer, which not only increases the labor intensity of the operator, but also reduces the traction motor. reliability and service life

In addition, due to the influence of the equipment precision of the expander and the subsequent insulation wrapping process, the straight edge of the coil is partially deformed, requiring workers to hold the coil, and the straight edge can only be shaped with a pneumatic vise equipped with special tooling. For a short section of shaping, the operator needs to move the coil multiple times, and multiple operations can complete the shaping of a coil, which is not only low in work efficiency, but also high in labor intensity.

In the process of inserting the wire, it is necessary to use special tools to adjust the shape and size of the coil; when the gap between the corresponding parts of the adjacent coil ends is uneven, or when the height of the outer side of the coil nose is inconsistent, it is necessary to manually knock the shape, which not only works Low efficiency, high labor intensity, and easy to damage the insulating layer wrapped on the coil, reducing the reliability and service life of the motor

At present, the imported stretching machine can solve the above problems, but the structure is complicated and the cost is too high

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