Savelenko H. Automation of the process controll the feeding the electrode tool for dimensional arc machining

In the context of the intensive development of mechanical engineering, important scientific and engineering tasks are the creation of automatic control systems that would improve the increase productivity and reduce energy costs for the production unit. One of the problem tasks in mechanical engineering is the creation holes and cavities of section a square with chamfers, rectangular, elliptical, polygonal and approximate ones close to them, which are used for fastening or joining of parts. The process of arc dimensional machining (ADM) as a means of electrical discharge machining (EDM) provides significantly more processing performance (5-10 times) and lower electricity consumption (1.5-2 times) than electric discharge machining. One of the ways to increase the processing performance of a part is to create and maintain extreme process modes, which are achieved through the introduction of more flexible modern automated control systems for filing electrode-tool. The thesis is devoted to the solutions of the actual complex scientific and applied problem of automation of the process of dimensional arc processing. As a result of the analysis of the existing systems for controlling the process of dimensional processing of the arc, a general task was set and solved to ensure an increase in the productivity and energy efficiency of the ADM process by automatically feeding the tool electrode. This became possible with the introduction of an electromechanical feeding system and the following automatic subsystems: the supply of an electrode tool to the processing area; stabilization of the parameters of the ADM process; Extreme in productivity processing parts; depth control. The development of mathematical control laws with their subsequent software implementation for all the above subsystems made it possible to combine all the functions for automatic control of the supply of the tool electrode in a single microprocessor device. The results of experimental studies and the technical and economic assessment confirmed the efficiency and expediency of using the microprocessor controller proposed in the work for the automatic control system for feeding the tool electrode.