Portable drilling method residual stress testing auxiliary drilling device

Abstract

The invention relates to a portable drilling method residual stress testing auxiliary drilling device, and belongs to the technical field of testing platforms. The device comprises a base, a platform shell, an inner limiting ring, an outer limiting ring, a limiting block, a moving block and a drill bit sleeve, wherein the platform shell is fixedly connected to the base, a track used for allowing the inner limiting ring to move up and down and an observation hole are formed in the platform shell, a spring is arranged at the portion, between the inner limiting ring and the base, in the platform shell, an extending part of the inner limiting ring is arranged in a rail formed in the platform shell and moves up and down along the track, the outer limiting ring is arranged on the periphery of the platform shell in a sleeving mode and is used for limiting movement displacement of the inner limiting ring, the limiting block is arranged above the inner limiting ring and is in contact fixation with the moving block through limiting screws which is arranged on the limiting block, the sleeve is arranged in the moving block, and the end of the sleeve is matched with a drill bit. According to the device, the drilling position of a to-be-drilled part can be centring adjusted, an electric hand drill can be directly installed to carry out precisely drilling, the drilling depth can be adjusted according to needs, the efficiency is high, and the stability is good.

Description

technical field [0001] The invention relates to a portable drilling method auxiliary drilling device for residual stress testing, belonging to the technical field of testing platform structures. Background technique [0002] Residual stress is an unstable stress state balanced inside the material. The existence of residual stress seriously affects the fatigue strength, static strength and corrosion resistance of the workpiece, causing defects such as deformation and cracking of the workpiece during manufacturing, which in turn affects service life of parts. In addition, in the processing and manufacturing process of parts, in order to ensure its safety and reliability and control machining deformation, it is necessary to control the residual stress level of the blank. Therefore, the distribution of residual stress in the blank should be understood, so that the most suitable processing technology can be used to reduce or avoid the deformation of the workpiece caused by the s...

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned technical problems, the purpose of the present invention is to provide a portable auxiliary drilling device for residual stress testing of the drilling method, which can effectively solve the problems of large centering errors, uncontrollable measurement depth, and difficult operation during traditional measurement methods. Problems such as complexity, low efficiency and poor stability of measurement results

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