Special detecting tool for measurement of position accuracy of through hole in stator

Abstract

The invention provides a special detecting tool for measurement of the position accuracy of a through hole in a stator. The special detecting tool comprises a base, an inscribed circle positioning head and a central plate, wherein the base adopts a cylindrical structure; the inscribed circle positioning head is arranged in the base in a penetrating manner and comprises a first relatively thick cylinder and a relatively thin second cylinder formed in the middle of the upper end surface of the first cylinder, a mounting space is reserved between the first cylinder and the inner wall of the base, and the size of the first cylinder is matched with that of an inner cavity of the to-be-measured stator; the central plate is nested on the second cylinder, a positioning hole is formed in the central plate, at least three position holes are uniformly distributed on the outer edge of the positioning hole in the circumferential direction, a positioning pin is arranged in the positioning hole in a penetrating manner, position pins are arranged in the position holes in a penetrating manner, and the lower ends of the positioning pin and the position pins all extend downwards into the mounting space. The detection efficiency of the position accuracy of the through hole in the stator is improved, and the detection cost is reduced.

Description

technical field [0001] The invention relates to the detection field of stators, in particular to a special inspection tool for measuring the position degree of a through hole of a stator. Background technique [0002] The stator is the main component of the motor, such as figure 1 As shown, it shows a structure diagram of a seven-hole stator 100, the end surface of the seven-hole stator 100 is perforated with seven through holes 101 in the circumferential direction, and a petal structure is formed in the middle of the seven-hole stator 100 7 petal-shaped grooves 103 are formed on the periphery of the inner cavity 102 . [0003] The position of the through hole 101 relative to the groove 103 directly determines the forging quality of the stator. Therefore, after the stator 100 is forged, it is necessary to detect the position of the through hole 101 relative to the groove 103 . [0004] In the prior art, a three-coordinate tester is generally used to detect the position of...

AI Technical Summary

Problems solved by technology

However, the three-coordinate tester is expensive and complicated to operate, and it is difficult to implement large-scale promotion

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