WEAR ACCOUNTING IN SIMULATION MODELING OF ASSEMBLY OF PG-3 PROFILE CONICAL COMPOUNDS

The article presents a mathematical model of the wear of the contacting surfaces and on its basis the influence of the wear of the shaft surface during assembling PG-3 profile conical compounds of machine parts. A total of 30 assembling realizations of PG-3 profile conical compound with due regard for consistent wear when the coordinates of the original rough surface of the shaft will be affected by the wear from implementation to implementation. Conducting consecutive simulation calculations of the conical compound assembly changes the final parameters of the formed conical details. It is shown that during the simulation of sequential wear stages of burnishing compound and its normal operation as the position of the shaft in the bushing hole (changing the position of the center of mass of the shaft and deflection angles of the shaft axes in the coordinate system of the hole), and the parameters of the contacting surfaces (the number of contact points, magnitude of tightness and gaps, the relative contact area and contact pressure) are well seen. It is established that the main process of the wear of the contacting surfaces of the conical compounds happens in the process of assembling the conical connection and has little to do with its work under the action of external loads because the model wear depends primarily on the linear velocity at the contact points of mating surfaces. The conclusion is made that the proper internal connections between the mathematical models and their application will allow to analyze is more detail the interaction of the contacting surfaces of the parts PG-3 profile conical compound.