The study of the process of sticking particles of the workpiece material on the abrasive grain during the grinding of workpieces made of plastic materials

Studies were carried out to identify the relationship between the intensity of adhesion of the workpiece material particles on abrasive grains (AZ) of the grinding wheel with the physical and mechanical properties of the grains. The mathematical dependence for the calculation of the voltage at the contact area of the clip with AZ after the AU out of contact with the workpiece is obtained. Numerical simulation of local temperature when microreserve (scratching) samples of steel 3KH3M3F abrasive grains of various materials. The deformation of the adhesion and the stresses resulting from this deformation acting on the connection of the adhesion with grains from materials having different coefficients of linear expansion are calculated. It is established that with the increase of the difference of coefficients of linear expansion of the workpiece materials and AZ, the stresses contributing to the separation of the adhesion from the AZ surface increase. This makes it possible to predict a lower intensity of sticking of the workpiece material on the AZ of such materials. In the course of experimental studies, micro-cutting of samples by single abrasive grains was carried out. It was found that to a lesser extent wear out and salted AZ from elbor. Elbor has the maximum value of the coefficient of thermal conductivity among the tested materials and to a lesser extent wears out, so the local temperatures when cutting grains from Elbor are minimal. The difference between the coefficients of linear expansion of the material adhesion and elbor has a maximum value. Therefore, the contact area of AZ CBN with adhesion there is tension, contributing to the separation adhesion from this surface. As a result, AZ was ranked from various materials according to the criteria characterizing their wear and salting. Confirmed identified analytically the relationship between the intensity of brining of grain with a coefficient of linear expansion and thermal characteristics of the materials AZ.