Currently, the use of a positional combined drive in metal-cutting equipment must have a high-precision ability to process new materials, the design of workpieces and parts; ensure the technical and environmental safety of personnel, etc. All these requirements must be met by CNC machines to produce competitive products in the market criteria. Metal cutting equipment due to its high cost has led to the need to use a single power source for multiple work movements. To increase the productivity of the machine, it is necessary to use a combined two-motor positional pneumatic drive. This increases the total production time. reduce the main time (by automating two movements: rapid supply of the workpiece to the processing center, and reduce the auxiliary time (automating the installation of the workpiece and removing the part, reducing the path of movement of the tool), reduce the time for equipment changeover (using digital display and software control). The section “research results” presents the results of mathematical modeling based on a computer model implemented in the SimInTech software package. The graphs of pressure dependences in the piston and rod cavities of the pneumatic cylinder, speed and displacement of the pneumatic cylinder are obtained.

The work is devoted to solving the actual technical problem of increasing the speed and accuracy of pneumatic servo drives. Pneumatic drives have a large number of advantages (high speed of the output link, environmental friendliness, low cost, etc.). But having a high compressibility of compressed air limits the possibility of realizing optimal trajectories of motion of control objects. The complexity in the organization of controlling the follow-up pneumatic drive is also introduced by a mathematical apparatus that takes into account the thermodynamic processes during the filling and emptying of the working cavities of a pneumatic cylinder. In connection with this, the goal of this work was the development of a mathematical model of a servomotor with a variable structure that takes into account the various structures of pneumatic valves with proportional control. The proposed mathematical model will make it possible to use the synergetic approach in controlling the pneumatic drive. This makes it possible to take into account not less important drive parameters such as energy efficiency, etc., with increasing speed and accuracy of the drive.

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