Tula State University, Tula, Russia

O. A. Erzin, Cand. Eng., Associate Prof., Dept. of Industrial Automation and Robotics, e-mail: erzin79@mail.ru
V. S. Salnikov, Dr. Eng., Prof., Dept. of Electro- and Nanotechnology, e-mail: vsalnikov.prof@yandex.ru
A. A. Malikov, Dr. Eng., Prof., Dept. of Mechanical Engineering Technology, e-mail: andrej-malikov@yandex.ru

Results of simulation of adaptation of cutting wedge front angle provided by spring-loaded rotary sector of cutting cutter to varying conditions of cutting in cutting operations are considered. It is shown that, despite the attempt to control the vertical displacement of the cutting wedge vertex relative to the workpiece axis at a constant spring rate, the beam of the self-adjustment unit adjustment options is to change both the preliminary deformation of its spring and its rate depending on the cutting conditions, for example, on the feed for rotation. The technical implementation presents significant difficulties that are associated with the need for operational control of these parameters of the self-regulation unit. Studies have shown that in order to stabilize the cutting forces in the desired range in the section operation, the depth of adjustment of the front angle of the cutting wedge is completely insufficient in the considered device. It has been established that the proposed technical solution of the “intelligent” tool using the principle of self-adjustment of the front angle of the cutting wedge depending on the cutting conditions is technically feasible during cutting operations. It is shown that it is effective only in a narrow range of changes in cutting modes, which is due to the use of an elastic element (spring) in the selfadjustment unit, which determines the angular position of the rotary sector of the cutting wedge depending on the load on it. To use the proposed approach in a wider range of changes in cutting conditions, it is necessary to use the concepts of mechatronics in the control of the front kinematic angle and combine them with feed control based on the principles of robust control. Technical feasibility was confirmed and recommendations were given for selection of parameters of selfadjustment unit of the proposed cutter device.

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