Numerical control roof-arc spreading machine

Abstract

A numerical control roof-arc spreading machine comprises a base guide rail mechanism, four bases, two coil nose clamping mechanisms, four coil bar roof radian mechanisms, four coil bar clamping spreading mechanisms, a hydraulic station and a sensor control numerical control circuit system. The two bases are respectively arranged on the left half portion and the right half portion of the upper end of the base guide rail mechanism and the two coil nose clamping mechanisms are respectively connected with the upper ends of the two bases. The other two bases are arranged in the middle of the upper end of the base guide rail mechanism. The four coil bar clamping spreading mechanisms are respectively arranged at the upper ends of the two bases with two coil bar clamping spreading mechanisms as a pair and the four coil bar roof radian mechanisms are respectively arranged on the sides of the four coil bar clamping spreading mechanisms. During working, the four coil bar clamping spreading mechanisms which are symmetrical all around are utilized to spread large coils and the two coil bar clamping spreading mechanisms which are symmetrical in a front-and-back mode are utilized to spread small coils. The numerical control roof-arc spreading machine can accurately and rapidly achieve one-step spreading forming machining of various motor coils.

Description

technical field [0001] The invention relates to a processing device for stator coils of an AC motor, in particular to a numerically controlled top arc expanding machine. Background technique [0002] Stator coil expansion of AC motor is a process of expanding the semi-finished motor coil wound into a shuttle shape to achieve a shape that matches the motor stator. In this process, shaping processing in three-dimensional space is required. The traditional processing method is step-by-step processing and molding, and then replicating with a mold. The process is complicated, the accuracy is not high, and the coil is easy to be damaged during the profiling process. [0003] Coil expanding machines in the prior art generally include a driving part and a mechanical part, and the driving part mostly adopts a hybrid driving mode of hydraulic pressure and servo motor. However, due to the relatively simple mechanical composition and relatively low motion accuracy of the coil expanding...

AI Technical Summary

Problems solved by technology

However, due to the relatively simple mechanical composition and relatively low motion accuracy of the coil expanding machine in the prior art, it cannot accurately complete the complex motion in the three-dimensional space, and the shaping in the three-dimensional space cannot be automatically completed on the same equipment, and often requires Repeated processing through molds increases production steps and processing costs

[0004] In the prior art, there is no equipment that can accurately and quickly complete the one-time expansion forming of various types of motor coils, especially for the one-time forming of shuttle-shaped coils made of hard winding closed-end winding.

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