Method for measuring size of opening of transition arc dovetail groove

Abstract

The invention relates to a method for measuring the size of an opening of a transition arc dovetail groove. The method includes the steps that the surface of the dovetail groove is wiped by alcohol so as to remove dust and other scraps; turnover framework glues are prepared according to a convention ratio, evenly mixed and coated into the dovetail groove; the formed turnover framework glues are taken out and cut into slices along a cross section of the dovetail groove; the cut formed turnover framework glues are placed on a projector and amplified by corresponding multiples until the turnover framework glues can be clearly measured, and the projection line of a horizontal plane A of a part with the dovetail groove is intersected with the projection line of a dovetail groove inclined plane B which is adjacent to the horizontal plane A to obtain a first theory cuspidal point C1 of the transition arc dovetail groove; and a second theory cuspidal point C2 of the transition arc dovetail groove is obtained according to the steps, and the distance between the two theory cuspidal points C1 and C2 is the size of the opening of the transition arc dovetail groove. The turnover framework glues are easy to control in mixing ratio, fast in forming, difficult to deform and capable of clearly turning over the dovetail groove, so that the problem that the measurement is difficult due to small dovetail grooves and large work pieces is solved.

Description

technical field [0001] The invention belongs to the technical field of measurement methods, in particular to a method for measuring the opening size of a transition arc dovetail groove. technical background [0002] In the quality inspection of the processed parts, there are two difficulties in the process of measuring the opening size of the transition arc dovetail groove on the part: 1. The transition arc dovetail groove is not easy to operate on larger workpieces. 2. The theoretical cusp of the transition arc dovetail groove is virtual (space size) and cannot be measured directly. Contents of the invention [0003] In view of the above-mentioned technical problems, in order to solve the difficulties in the process of measuring the opening size of the transition arc dovetail groove, the purpose of the present invention is to provide a method for measuring the opening size of the transition arc dovetail groove. [0004] In order to achieve the above object, the present i...

AI Technical Summary

Problems solved by technology

[0002] In the quality inspection of the processed parts, there are two difficulties in the process of measuring the opening size of the transition arc dovetail groove on the part: 1. The transition arc dovetail groove is not easy to operate on larger workpieces

2. The theoretical cusp of the transition arc dovetail groove is virtual (space dimension) and cannot be directly measured

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