A special measuring tool for measuring keyway symmetry of shaft parts

Abstract

The invention relates to a special measuring tool, in particular to a special measuring tool for measuring the symmetry degree of a shaft part key groove and solve the technical problem that people can measure the symmetry degree of the shaft part key groove conveniently, a manual ruler is not needed, and the phenomenon that the efficiency is affected by hand pain is avoided. The technical schemeof the special measuring tool for measuring the symmetry degree of the shaft part key groove comprises a hollow handle, a first support bar, a support plate, an adjusting device, a first measuring rodand the like; the first support rod is fixedly connected to the lower part of the left side of the front side of the hollow handle, and a first gear is rotationally arranged at the upper part of therear side of the first support rod. According to the special measuring tool for measuring the symmetry degree of the shaft part key groove, under the action of the first measuring rod and the second measuring rod, a press block is pushed, the first measuring rod and the second measuring rod can measure the symmetry degree of the shaft part key groove, the manual ruler is not needed to measure theposition length of the key groove to obtain the symmetry degree, the operation is more convenient, and a detection shaft can move more smoothly in the hollow handle under the action of a universal ball.

Description

technical field [0001] The invention relates to a special measuring tool, in particular to a special measuring tool for measuring the symmetry of key grooves of shaft parts. Background technique [0002] In the manufacturing process of shaft parts, it is necessary to open multiple key slots to facilitate subsequent assembly, but the key slots need to be symmetrical so as not to affect the subsequent processing, so it is necessary to check the symmetry of the opened key slots. Usually people use a ruler to check the position of the key slots It is cumbersome to measure the length, and then to know the symmetry according to the measured length comparison, and it is troublesome to constantly pull the ruler, and the hand will be sore after a long time, which will affect the efficiency, so two people are required to measure the position and length of the two keyways respectively, so the labor cost high. Contents of the invention [0003] In order to overcome the disadvantages ...

AI Technical Summary

Problems solved by technology

[0002] In the manufacturing process of shaft parts, it is necessary to open multiple key slots to facilitate subsequent assembly, but the key slots need to be symmetrical so as not to affect subsequent processing, so it is necessary to check the symmetry of the key slots that have been opened. Usually people use a ruler to check the position of the key slots It is cumbersome to measure the length, and then compare the measured lengths to know the symmetry, and it is troublesome to pull the ruler continuously. After a long time, the hands are prone to soreness and affect the efficiency. Therefore, two people are required to measure the position and length of the two keyways respectively, so the labor cost high

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