CONTROL OF TURNING MODULE CARRIAGE MOVEMENT IN CHIP BREAKING MODE

Vinogradov Mikhail Vladimirovich, Doctor of engineering sciences, professor, sub-department of automation, control, mechatronics, Yuri Gagarin State Technical University of Saratov (77 Politekhnicheskaya street, Saratov, Russia), michail2202@mail.ru
Ignat'ev Aleksandr Anatol'evich, Doctor of engineering sciences, professor, sub-department of automation, control, mechatronics, Yuri Gagarin State Technical University of Saratov (77 Politekhnicheskaya street, Saratov, Russia), michail2202@mail.ru
Klepova Irina Viktorovna, Postgraduate student, Yuri Gagarin State Technical University of Saratov (77 Politekhnicheskaya street, Saratov, Russia), michail2202@mail.ru

681.5

10.21685/2072-3059-2017-4-9

Background. The article analyzes turning module functioning and presents the results of studies on dynamic processes occuring at reciprocating movements of the feeding drive carriage in chip breaking mode.
Materials and methods. Closed electromechanical actuators with multi-stage friction gears (FIP) of longitudinal and cross tunring module feeds in combination with aerostatic guides provide high accuracy (no slippage) of the corresponding motion of the carriage with mounted t tool holder. Using this system it is possible to split chips both at longitudinal and face turning, thus providing turning processing in chip breaking mode for parts of virtually any configuration.
Results. When working in chip breaking mode on turning module TPARM with multiple friction gears, aerostatic guides and a laser interferometric feedback sensor, the technique ensures efficient chip breaking when machining different materials, in particular, parts made from copper and aluminum alloys.
Conclusions. In chip breaking mode, the use of reciprocating movements of the carriage in accordance with the established rule of moving speed change in feed drives of precision turning modules allows to eliminate built-up on the cutting edge along with reliable chip breaking and to get high quality treatment without significant reduction in tool life.

turning, feed drive, multiple friction gears, moving speed control, chip breaking

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