MODERN DEVELOPMENTS IN THE FORMATION OF THE DIAMOND ABRASIVE LAYER OF THE TOOL BY THE GALVANIC METHOD, THE APPLICATION OF CVD- AND HPHT-DIAMONDS AND THE PRECISION TREATMENT OF COMPLEX PROFILE SECTIONS OF THE DIAMOND LAYER

Abstract

The article focuses mainly on modern publications devoted to diamond abrasive tools. Friction and wear of two types of PCD were studied: HFCVD - hot filament chemical vapor deposition and sintered under high pressure and high temperature (HPHT) on steel and ceramics. In PCD, both the friction coefficient and the wear rate were generally lower, except for the HFCVD sample. That is, polycrystalline CVD can be considered as a diamond material for a dresser tool. It is shown that the laser method of rough grinding of wheels is used for quick removal of an excess abrasive layer, and electroerosion precision grinding not only increased the accuracy of the profile, but also realized the renewal of the cutting ability of the grinding tool. In our opinion, attention should be paid to this, especially when dressing wheels with CVD diamonds. Microstructured CVD diamond grinding tools are gaining more and more attention in the field of precision grinding and microgrinding due to their advantages: low grinding effort, high processing accuracy and good wear resistance. It has been established that the accuracy of straightening diamond arc-shaped grinding wheels can be significantly increased by reducing the wear of diamond particles of the galvanic dresser tool.