Actual Problems in Machine Building. Vol. 9. N 3-4. 2022 Technological Equipment, Machining Attachments and Instruments __________________________________________________________________ 26 DYNAMIC ANALYSIS OF THE DRIVE OF CNC LATHE Denisenko A.F., D.Sc. (Engineering), Professor, e-mail: sammortor@yandex.ru Gasparova L.B., Ph.D. (Pedagogical), Associate Professor, e-mail: gasparova@mail.ru Samara State Technical University, 244, Molodogvardeyskaya str., Samara, 443100, Russian Federation Abstract The paper considers the design scheme of a dynamic torsional system for a lathe with stepless control of the main motion drive. As a result of dynamic analysis, the lowest natural frequencies of torsional vibrations of the drive are obtained. Software is developed to simplify analysis. Program allows simplifying linear dynamic systems and determining natural frequencies. The dynamic quality of the drive is evaluated. Obtained values of natural frequencies are compared with permissible resonance-free mode. The appearance of individual natural frequencies in the dangerous resonant zone allowed us to formulate measures to reduce the influence of resonant phenomena in the drive. Keywords Machine drive, dynamic system, natural frequency, moment of inertia, compliance, resonance zone.
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