Actual Problems in Machine Building 2015 No. 2

Actual Problems in Machine Building. 2015. N 2 Innovative Technologies in Mechanical Engineering ____________________________________________________________________ 70 THERMOPHYSICAL BASICS OF HOLE MACHINING GEOMETRY ACCURACY Milovanova L.R. , Ph.D. (Engineering), Associate Professor, Dean, e-mail: sarmilovanova@mail.ru Stekolnikov M.V. , Ph.D. (Engineering), Associate Professor, e-mail: stekolnikov2008@mail.ru Prigorovsky A.S. , Student, e-mail: Michaelkheel@bk.ru Engels Technological Institute (branch) of Yuri Gagarin State Technical University of Saratov, 17 Svoboda square, Engels, Saratov Region, 413100, Russian Federation Abstract The paper addresses the axisymmetric thermolphysical problem of deep-hole drilling using the proposed mathematical model of temperature calculation by the heat source method based on the principles of space-time correspondence and local influence. The temperature in the tool-part contact zone and the workpiece temperature distribution (temperature gradient) are calculated. The adequacy of the proposed mathematical model is proved. Keywords heat source, deep-hole drilling, heat conduction, heat source method, space-time correspondence principle