The boundary conditions in the contact of an abrasive wheel with a rubber coating and also in the contact of a single grain with rubber are investigated. The influence of the grain geometry of the normal and tangential stress in the contact zone with the rubber is analyzed. By numerical simulation of the work of a single grain, contact-stress curves may be plotted for the machining zone. An analytical formula is derived for the machining force when the wheel is held steadily against the workpiece.

The internal abrasive machining of thermoprotective rubber coatings with constant retaining force on the grinding wheel is studied, theoretically and experimentally. A model of rubber failure in abrasive machining is proposed on the basis of the work of a single abrasive grain in contact with the machined surface. A relation is established between the components of the grinding force and the normal and tangential contact stresses at the working surfaces of a single grain of the wheel.

Numerical solution of contact problems for the abrasive machining of rubber coatings on the internal cylindrical surfaces of metal components yields values of the contact stress, the contact length, and the penetration depth at contact of an abrasive wheel and a rubber coating and at contact of a single abrasive grain with the machined material. The relation between the machining parameters of the workpiece geometry is established.

To eliminate wobble in the abrasive machining of thermoprotective coatings, a special damping attachment has been designed and manufactured. A thermodynamic model of the technological system based on an electrothermal equivalent circuit and the point-potential method is used for analysis of the elastic and thermal oscillations.

The methods of calculating the parameters of the thermodynamic model sander obtained by electrical analogies. The presented model allows to study the interaction of elastic and thermal dynamic processes during grinding. Process, and thermal subsystem process abrading internal thermal barrier coatings are presented in the form of electrical circuits. Calculation of temperature and power parameters of the grinding process is carried out numerically using nodal analysis used in electrical engineering. The paper presents the dependences for determining equivalent circuit parameters that reflect the processes of heat transfer in the cutting zone during grinding. Considered parameters electrothermal models describe the distribution of heat flow between the chip, the workpiece and the grinding wheel grain.

The problem of calculating the values of the thermal resistance of the element in the cutting zone electrothermal replacement scheme for the analysis of thermal processes for grinding internal thermal barrier coatings was study. Electrothermal model includes thermal resistance, heat capacity and voltage sources, which provide an adequate modeling of thermal processes in the zone of contact interaction of grain grinding wheel with machined surface thermal barrier coating. The potentials at the nodal points of the equivalent system reflect the average temperature characteristic elements of the original system, including the workpiece, chips and grains of the grinding wheel. On the basis of the replacement scheme electrothermal established between the heat flow in the area of the abrasion. Examples of calculation of temperature and cutting forces during grinding rubber heat-resistant coating. This mathematical model is designed for the management of technological regimes of the grinding process in order to improve the quality of the machined surface

The offered method of calculation allows to define temperature in a zone of abrasive machining of rubber heat-shielding covering and can be used for development of practical recommendations about optimiza-tion of technological parameters.

The model of abrasive processing the rubber heat-shielding covering with estimation of tem-perature conditions which can be used at a choice both processing tool, and machining modes is offered.