Actual Problems in Machine Building 2016 No. 3

Actual Problems in Machine Building. 2016. N 3 Innovative Technologies in Mechanical Engineering ____________________________________________________________________ 116 Republic, Hrades nad Moravici, Ostrava, 24–26 May 2005. – P. 214–221. 12. Improving service life of steel bridges, light poles and sign structures through the use of ultrasonic impact treatment (UIT) / K. Krishna, P.E. Verma, E.S. Statnikov, L. Theini // Bridge Maintenance, Safety, Management and Costs: proceedings of the Second International Conference on Bridge Maintenance, Safety and Management, 18–22 October 2004, Kyoto, Japan / E. Watanabe, D.M. Frangopol, T. Utsunomiya (eds.). – London: Taylor & Francis Group, 2004. 13. Северденко В.П., Клубович В.В., Степаненко А.Б . Обработка металлов давлением с ультразвуком. – Минск: Наука и техника, 1973. – 286 с. 14. Попов П.Л . Механика контактного взаимодействия и физика трения: от нанотрибологии до динамики землетресений. – М.: Физматлит, 2013. – 352 с. 15. Гилета В.П., Безнедельный А.И., Асанов В.Б . Выбор материала деформаторов для упрочняюще-чистовой обработки ультразвуковым инструментом // Актуальные проблемы в машиностроении. – 2015. – № 2. – С. 163–168. 16. Гилета В.П., Безнедельный А.И., Асанов В.Б . Влияние СОЖ и присадок на износ инструмента при ультразвуковой упрочняюще-чистовой обработке // Актуальные проблемы в машиностроении. – 2015. – № 2. – С. 158–162. STUDY OF THE FRICTION FORCE UNDER ULTRASONIC REINFORCING FINISHING TREATMENT Gileta V.P., Ph.D. (Engineering), Associate Professor, e-mail: gileta.viktor@yandex.ru Beznedelnyy A.I., Ph.D. (Engineering), Associate Professor, e-mail: beznedelnyy@corp.nstu.ru Asanov V.B., Ph.D. (Engineering), Associate Professor, e-mail: asanov@ corp.nstu.ru Novosibirsk State Technical University, 20 Prospekt K. Marksa, Novosibirsk, 630073, Russian Federation Abstract An influence of the tool vibration with ultrasonic frequency on the friction forces under different conditions and modes of surface plastic deformation was investigated. Experiments were performed with the special bedstead consisting of the 1K62 turning machine, UZG3-4 ultrasonic generator with the magnetostrictive convertor, and apparatus for loading, removal and registration of the signal. Samples were produced from the SHX15SG steel. The ultrasonic tool was equipped with deformer from the VK8 hard metal. It was determined that loading ultrasonic vibrations on the deformer under surface plastic deformation significantly decreases the friction forces in the conditions of both oiling and dry friction. Variation of the treatment modes leads to alteration of the friction force. Increase of the amplitude of the tool vibration results in decrease of the friction force whereas the static load increase leads to grows of the friction force. The influence of the slip velocity on the friction force is ambiguous. Keywords surface plastic deformation with the ultrasonic tool (UT), deformer, friction force, oiling, static load, velocity, amplitude