Theoretical model design for processing internal surfaces of machine parts with free abrasives that ensures the reliability of technological processes in digital manufacturing

Abstract

The paper presents the research results of vibroabrasive processing of variously located part surfaces. An analysis of technological possibilities of processing with free abrasives in digital manufacturing was made. The dependability issue of technological processing is considered. Refined dependences were obtained to determine the mass of metal removed during processing and the steady-state roughness of the internal surface. The processing features of internal surfaces are revealed, taking into account the different ratio of length to the size of the cross section. In the course of experi-mental studies, the adequacy of the proposed dependencies was confirmed. A dependability as-sessment of the designed technological process at the stage of technological preparation was made, taking into account the possible spread of technological parameters. The results obtained make it possible to design highly efficient technological processes for processing parts with free abrasives and carry out technological preparation of digital production in an automated mode.