Hole coaxiality measuring device and measuring method thereof

Abstract

The invention discloses a hole coaxiality measuring device and a measuring method thereof. The hole coaxiality measuring device comprises a rotary seat and an inner diameter measuring tool, wherein the rotary seat is provided with a measuring ring; two vertexes are arranged at positions on the ring inner wall of the measuring ring in different radial directions of the circumference; the inner diameter measuring tool is provided with a measuring head positioned in the measuring ring; and the measuring head is arranged outwards along the radial direction of the measuring ring. The whole measuring device and the method are novel and simple, have the advantages of accurate measurement and high efficiency, and do not need to be operated by professional staff. The device is simple in structure,and low in cost. The defect of incapability of taking the measurement accuracy, efficiency and cost into consideration in the prior art is overcome, and great economical benefit is brought to production enterprises.

Description

technical field [0001] The invention relates to the technical field of coaxiality measurement, in particular to a hole coaxiality measurement device and a measurement method thereof. Background technique [0002] In the development of the machinery industry, the processing accuracy of the parts that make up each mechanical product is becoming more and more important, especially the processing of the coaxiality of the holes of the parts with holes. Take the gearbox case as an example, such as Figure 1-2 As shown, there are multiple holes with different hole diameters designed on the box shell. During lathe machining, the holes need to be milled in at least two steps. Hole group, the second step is to mill out the through hole shown in the label B and the left hole group with continuous distribution on the left side. As a result, the holes on the left and right sides involve the problem of coaxiality. [0003] It is necessary to ensure the accuracy of the coaxiality of the ...

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Problems solved by technology

[0003] It is necessary to ensure the accuracy of the coaxiality of the hole, and it is necessary to perform precise measurement of the coaxiality of the hole. At present, there are various forms of coaxiality measurement devices, which can be roughly divided into two categories. One is simple and low cost. However, the measurement accuracy is low, which cannot meet the needs of measurement accuracy; the other type is the high measurement accuracy of the device, such as a three-coordinate measuring instrument, but the device is expensive, the structure is complicated, the operation is cumbersome, and a special person is required to measure, and the measurement efficiency is low, which affects production and economy. benefit

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