Measuring installation for testing adhesion strength and operating life of diamond coated cutter

Abstract

An unit for measuring adhesive intensity of diamond coating layer on tool and its service lifetime is prepared as connecting load system of dynamic charge with base , exerting dynamic pressure on liquid in base cavity and transmitting pressure onto sample film to be measured in sound speed , using He-Ne laser interference measurement system above base to detect height variation of film , connecting said system to data collection device and computer as well as base for obtaining variation value of liquid pressure and film height then obtaining dynamic film adhesive intensity through computer analysis.

Description

Technical field [0001] The invention relates to a device used in the technical field of mechanical cutting, in particular to a measuring device for dynamically quantitatively testing the adhesion strength and service life of diamond-coated tools. Background technique [0002] Diamond has become an ideal tool material because of its excellent properties such as high hardness, high thermal conductivity, low friction coefficient, low thermal expansion coefficient, and good chemical stability. It has been widely used in the field of diamond-coated cutting tools, but it has not yet been Realize large-scale production. One of the main reasons is the lack of uniform standards for the evaluation of the intrinsic quality (mainly mechanical properties) of diamond coatings. Among the existing measuring devices, they include indentation testing, vertical stretching, scraping measurement and laser shock quantitative measurement devices. The indentation test, vertical stretch and scratch test ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art, to provide a measuring device for testing the adhesion strength and service life of diamond-coated tools, so that it can overcome the inability of the existing technology to carry out accurate quantitative dynamic detection, the limitation of the shape of the substrate and the inability to To adapt to various complex working conditions and many other deficiencies, the measuring device can not only accurately and quantitatively measure the adhesion strength of the diamond coating dynamically, but also the device can simulate different working conditions, flexibly change the frequency and size of the loading load, and adapt to different frequencies and impact load, so as to measure the actual service life of diamond-coated tools under different working conditions

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