Actual Problems in Machine Building 2015 No. 2

Actual Problems in Machine Building. 2015. N 2 Innovative Technologies in Mechanical Engineering ____________________________________________________________________ 46 PROVIDING ROUGHNESS VALUES OF THE PART SURFACE CONSISTING OF TWO DISSIMILAR CONSTRUCTIONAL MATERIALS Smirnov I.M. , Ph.D. (Engineering), Associate Professor, General Director, e-mail: oaoniii@pochta.ru JSC Research Engineering Institute, Western industrial zone, 6 Shosse Entuziastov, Balashikha, Moscow region, 143912, Russian Federation Abstract In designs of modern cars and mechanisms there are parts of the rotary body class whose design consists of a metal matrix filled with a plastic filler. As similar parts work under difficult operating conditions, requirements to the joint surface quality, namely, to roughness are imposed in addition to requirements to their durability and tightness. The established values of quality are provided by machining with the edge tool equipped with composite 10. This tool material has a lot of advantages over all other known materials for equipping cutters, mills and other tools. Thanks to its unique physical and mechanical properties it is successfully applied in turning and boring operations and face milling of intermittent surfaces. As a result of finishing machining, tools equipped with composite 10 are capable of providing the accuracy of machining of no less than the 7th quality class with roughness of no more than 1, 25 microns. Keywords part surface, roughness, metal, plastic, turning, machine, cutting tool, durability of the tool, quality of processing