Method for measuring sidewall step hole parameter of annular component

Abstract

Provided is a method for measuring a sidewall step hole parameter of an annular component. The annular component is provided with at least one reference hole. A sidewall is provided with at least one step hole with an external diameter larger than an internal diameter. The method comprises steps of: producing an installing shaft used for cooperating with the reference hole, wherein the installing shaft is equipped with an L-shaped measuring pawl; computing the length of a pass pin and the length of a stop pin and producing the pass pin and the stop pin according to an acquired result, wherein the pass pin and the stop pin are pins equipped with semispherical nail heads and the diameters of the rod portions of the pass pin and the stop pin have diameters the same as the external diameter of the step hole; and measuring the annular component by using the pass pin and the stop pin. The method for measuring the sidewall step hole parameter of the annular component is low in measuring tool cost, convenient and simple in measurement, and high in measurement efficiency, and achieve field measurement so as to improve production detection efficiency.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to the field of dimension measurement in the process of mechanical processing, in particular to a method for measuring the parameters of a stepped hole on a side wall of an annular part. Background technique [0002] In the field of mechanical processing, especially in the processing and production of aviation parts, there are often strict requirements for dimensional accuracy. Therefore, in the processing or inspection process, it is usually necessary to strictly measure the size of the parts. figure 1 It is a schematic diagram of the structure of a ring part, see figure 1 As shown, the annular part 1 is provided with at least one reference hole 11, and at least one stepped hole 13 whose outer diameter d1 is larger than the inner diameter d2 is arranged on the side wall 12, and the central axis of the reference hole 11 is stepped to the stepped hole 13 The distance is L. For ...

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Problems solved by technology

[0003] 1. The measuring object is difficult to find, one end is the virtual central axis, and the other end is the step of the stepped hole 13, which are difficult to be directly touched by the measuring tool;

[0004] 2. The supporting surface of the measuring tool of the measured size has a large drop in the vertical direction and is blocked by the side wall 12. Therefore, it is difficult to balance the force when the measuring tool is used, which increases the difficulty of operation and causes rough measurement during operation. error

[0005] The existing measurement method is to first measure the central axis coordinates of the reference hole 11 using a three-coordinate instrument, and then use an auxiliary tool to measure the distance L from the central axis of the reference hole 11 to the step of the stepped hole 13. Although this method can guarantee the accuracy of measurement, it has the following problems: 1. The measurement cost is high and the measurement efficiency is low; 2. It cannot be measured on the machine tool or on the processing site

3. The production operation is inconvenient. If the size processing is not in place, it needs to be sent for inspection and processing repeatedly, which will affect the production efficiency

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