MANAGEMENT OF PROCESSING ACCURACY IN FLEXIBLE PRODUCTION SYSTEMS
Abstract
On modern CNC machines, which form the basis of technological equipment of flexible manufacturing systems (FMS), the problems of automation of almost all operations are solved, except for the operations of the initial adjustment of the tool and adjustment of its level. The need to organize separate posts as part of the FMS to configure the tool, base and fix parts largely hinders the transition to uninhabited production. In these conditions, the problems of creating an automatic processing accuracy control system (APACS) in the FMS are incredibly important (Balakshin B.S., (1973); Nevelson M.S., (1982); Solomentcev Y.M., Basin A.M., (1974); International Journal of Automation Technology, (13)). The industry has gained considerable experience in creating APACS, when processing on universal machines and, especially, on machines for finishing operations. The dissemination of this experience into small-scale production, where CNC machines are used, is hampered by the difficulty of creating effective measuring devices for fixing primary information and conversion devices for the received signals. To some extent, these difficulties are overcome through the use of contact sensors, laser technology and microprocessors capable of receiving and converting the primary signals of the control effect on the processing process (Komissarov V.I., Leontiev V.P., (1985); Sweda J.,(2022)). It is known that the process of machining usually cannot be described by deterministic methods, because the characteristics of the input signals of the technological system not only change over time, but also remain uncontrolled (Dushinsky V.V, Puhovsky E.S., Radchenko S.G., (1977); Puhovsky E.S., ( 2021); Antony Swic, (2014)). Therefore, the synthesis of APACS for such unstable processes should be carried out taking into account static instability, which generates uncertainty. In these conditions, the problem of creating such adaptive processing accuracy management systems that can change the management structure depending on the results of the current assessment of management quality is extremely relevant. The article sets the task of developing the structure of APACS, determining control parameters, feedback channels and ways to ensure a given accuracy of processing. Purpose of work: Development of an automated processing accuracy management system in the conditions of interconnected software-controlled equipment of flexible production systems.
References
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