Control of Trajectory Precision in a CNC Machine Tool

P. M. Kuznetsov^a^,*, N. A. Belousov^b^,**, and A. G. Yagopol’skii^b^, ***

^aMoscow Aviation Institute (National Research University), Moscow, Russia

^bBauman Moscow State Technical University, Moscow, Russia

Correspondence to: *e-mail: profpol@rambler.ru
Correspondence to: **e-mail: nikolasbelousov@rambler.ru
Correspondence to: ***e-mail: domnyshev_andrev@rambler.ru

Received 28 November, 2020

Abstract—Control of the trajectory precision in a machine tool with a specified contour is possible by the generation of correcting signals in the velocity loop of the supply drives. A mathematical model is developed for predicting the behavior of the drive system over time so as to form the required correction signals. This approach results in the required precision, with accompanying increase in the contour velocity, thereby improving the productivity and quality

Keywords: CNC metal-cutting machine, control software, optimal trajectories, machining precision, dynamic errors

DOI: 10.3103/S1068798X21100178