Zharkov N.V., Pavlov G.A. The improving of cutting cantilever-fixed parts on CNC lathes

The improving of cutting cantilever-fixed parts on CNC lathes

Zharkov N.V., Pavlov G.A.

The paper presents the method of improving movement accuracy of the tool and the blank when turning cantilever-fixed parts. One of the reasons limiting accuracy improvement in cantilever-fixed parts turning is an untimely sending correction signals to the control actuator. In a real drive it is impossible to check the time of sending correction signals, since registration, processing and transmission of the signal via feedback channels takes a certain amount of time. As a result of the feedback signal falling, there is a tool correction delay in the turning process. It results in the additional error component. When using a computer model of the cutting process in the guidance loop, it is possible to create and send a feedback signal to the control channel without any delay. This lets the actuator adjust the tool movement in advance.

Keywords: blank, tool, model, modeling, cutting, accuracy, efficiency.

References

1. Weitz V.L., Maksarov V.V. The dynamics of technological systems of machining: Monograph in 5 parts. Part 5. Self-oscillations in the machining process systems. – St. Petersburg: SZTU – SpbIMash, 2002 – 224 p.
2. Kudinov V.A. Dynamics of machines. – Moskow: Mashinostroenie, 1967. – 260 p.

«Engineering industry and life safety» №1 (15), 2013. Pages: 57-62

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Zharkov Nikolay Vladimirovich – Ph.D., Vladimir State University, Vladimir, Russia. E-mail: zhar-kov_nikola@mail.ru

Pavlov Georgiy Andreevich – Master student, Vladimir State University, Vladimir, Russia. E-mail: rpo_tavr@mail.ru