Dynamic And Static Characteristics Monitoring Technology For High-Speed CNC Machining Equipment Based On Complex System Theory

With the development of enterprise information and high-speed CNC machining technology, the requirements of individuation, diversification and precision are increasing. High-speed CNC manufacturing equipment should be equipped with inspection devices and monitoring equipments besides the necessary tools to achieve processing tasks. That increases the complexity of the information environment of the manufacturing system. And the product manufacturing process is different from conventional machining process. It integrates the clamping process, machining process, inspection process and monitoring process as a whole. And it has the characteristics such as complexity, dynamic, polytropy, uncertainty, etc.. Static and dynamic characteristics monitoring of High speed CNC manufacturing equipments and integrated manufacturing process belong to complex problem, because it has the characteristics of complex system, including complexity, dynamic, polytropy, uncertainty, collaborative and etc.. Therefore, complex system theory and analysis methods are employed to research on the static and dynamic characteristics monitoring of High speed CNC manufacturing equipments and integrated manufacturing process, which has significant theoretical and research value.This thesis investigates dynamic and static characteristics monitoring method of high-speed CNC machining equipment and application technology based on complex system theory. The creative contributions and conclusions may be summarized as follows.(1) In view of the characteristics of the manufacture process such as complexity, dynamic, polytropy, uncertainty, etc., Manufacturing Process Complexity(MPC) concept is proposed after learning many research scholars'thoughts and achievements on manufacturing system structure complexity, product process planning complexity and product design process complexity, in order to find a systematic scientific method can reduce the manufacturing process complexity and ensure that the machining task can be achieved with high quality and efficiency, which has certain scientific significance.(2) Cellular Configuration Collaborative Monitoring(CCCM) method is proposed based on the research on basic methods of complex system theory, taking account many limitations such as monitoring object can not be changed and monitoring parameters can not be discretionary adjusted in manufacturing process configuration monitoring at present,and combining with the advantages of cellular automata model solves complex problem. It has the same characteristics with complex system theory such as dynamic, evolution, collaborative, so It's a research method based on complex theory, and can resolve complexity problem such as static and dynamic characteristics monitoring of high speed CNC manufacturing equipment and integrated manufacturing process. (3) Normalized cellular design method is given that is each cellular is designed as a quaternion, expressed as "C= (cellular state space, cellular state set, factors set affecting the cellular state, operation rules) ". Then the configuration principle of cellular and the collaborative mechanism between cellulars are researched, which provide theoretical foundation for the realization of the CCCM method.(4) The CCCM method is applied to static and dynamic characteristics monitoring of high speed CNC manufacturing equipment and integrated manufacturing process, based on research of theory method and key technologies. Static and dynamic characteristics of High-speed CNC turning process system are analyzed with Finite Element Analysis(FEA) method, in order to determine parameters of static and dynamic characteristics, and find the weaknesses of the process system. These informations provide references to decide which objects need to be monitored. The CCCM method converts the monitoring with multi-object, multi-space and multi-field in the high speed CNC integrated manufacturing complex process into one-dimensional monitoring based on "Quality Control in Process Nodes" Cellular. The complexity of manufacturing process monitoring is greatly reduced. Moreover, the static and dynamic characteristics monitoring system of high speed CNC manufacturing equipment and integrated manufacturing process is developed based on the CCCM method, using configuration software and VC platform. The static and dynamic characteristics parameters of high speed CNC manufacturing equipment and machining quality of high speed turning can be monitored by the system. It contributes to the achievement of dynamic quality monitoring of whole process in high speed turning, and facilities to look for the reasons of manufacturing quality fluctuation, and further to summarize distribution rules of product's quality fluctuation and error transition in manufacturing process, which can provide evidences for dynamic error compensation.