Bondar O. Technological assurance of the quality of non-detachable joints using re-adjusting devices in the conditions of serial production

The dissertation is devoted to the solution of scientific and technical problems to ensure the quality assurance of products by having integral connections, expanding technological possibilities and increasing the efficiency of universal Prefabricated devices (UPFD) in the conditions of serial multi-nomenclature production. The analysis of constructions, tendencies development of prefabricated devices development and conditions of their operation for assembling non-detachable joints is carried out. The basic criteria for estimating the adaptability of devices are established, methods of connection and fixing the elements of the UPFD are offered for ensuring the maximum level of assembly of layouts. The conditions of power interaction of elements of a new construction are substantiated. An analytical expression for equivalent rigidity of base plates was obtained, the basic geometric parameters of elements and their degree of influence on durability and rigidity of adaptations were determined. Experimental investigations of the strain-deformed steel of the UPFD base plates of the new design have been carried out and the efficiency of connecting the elements of devices has been confirmed. The methodical and practical recommendations for defining the rational basic design parameters of the elements of the UPFD and their layout for an effective equipment of a serial multi-unit production are developed. The economic effect of introducing the main provisions of work in production is 160000 UAH. Key words: technological process of assembly of products, serial production, non-detachable connections, adjustable adaptations, quality, accuracy.