Actual Problems in Machine Building 2016 No. 3

Actual Problems in Machine Building. 2016. N 3 Technological Equipment, Machining Attachments and Instruments ____________________________________________________________________ 198 COIL SPRING GROUP FOR FREIGHT-CAR TRUCK Markov A. M. 1 , D.Sc. (Engineering), Professor, e-mail: andmarkov@inbox.ru Gabets A.V. 2 , Ph.D. (Engineering), Development director, e-mail: gabets22@gmail.com Gabets D. A. 1 , Ph.D. student, e-mail: gabets22@mail.ru Gavrikov D. V. 2 , Deputy Chief Designer, e-mail: fastdvg@gmail.com 1 I.I. Polzunov Altai State Technical University, 46 Lenina avenue, Barnaul, Altai region, 656038, Russian Federation 2 Ltd «Altai steel casting factory» (ASCF), 116/52 Kalinina avenue, Barnaul, 656037, Russian Federation 3 JSC «Altaivagon», 16 22 nd Partsezda str., Novoaltaysk, 658087, Russian Federation Abstract We present a modernization of freight-car truck with 60C2XFA steel for coil spring group. Reasons and spring issues of node oscillation damping. We evaluated the condition of the spring according to calculation code requirements and designing railway car Russian Federation. Keywords spring, freight-car truck, spring wedge, coil spring group, node of oscillation damping, strength, duality, working efficiency, friction-wedge