Research On Intelligent Cutting System Of Automotive Composite Leather

With the development of science and technology and the improvement of economic level,the automobile industry is booming,leather as one of the indispensable materials for automobile interior,its market prospect is booming.However,the current domestic small and medium-sized enterprises for automotive composite leather cutting system automation degree is not high,can not meet the growing market demand,so the design of an intelligent cutting system for automotive composite leather to meet the current needs of enterprises is urgent.In this paper,based on Siemens 1200 PLC + motion controller model,according to the cutting characteristics of automotive composite leather and automation control requirements,through the improvement of the enterprise’s original cutting tool,develop and design a set of automotive composite leather intelligent cutting system to meet the needs of enterprises.The main contents of this paper research include:(1)The existing leather cutting equipment of current enterprises is analyzed,and the cutting process of automotive composite leather of enterprises is studied.According to the cutting size of automotive composite leather and the performance index of cutting device,the body frame of automotive composite leather cutting device is designed,and the mechanical parts of the actuator are also designed,including the design of leather clamping device,leather dragging device and leather cutting device.(2)Through the analysis of the system operation characteristics,the speed planning of the motion control system is carried out and the mathematical modeling of the stepper motor is performed.The principles of traditional PID control,fuzzy PID control and RBF neural network PID control are analyzed,and three algorithms are designed to control the system respectively.The simulation comparison and analysis are carried out by Matlab to verify the superiority of RBF neural network PID control algorithm on the stepper motor control system.(3)According to the performance index of the leather cutting device,the PLC controller and other hardware are selected and designed,the hardware type and model of the system are determined,the input and output signals of the controller are analyzed and planned,and the selection of the main controller of the system is completed.The motion control system is developed by TIA Porta software and the human-machine interface is designed for the leather cutting system.(4)The hardware of the leather cutting system is investigated,the program of each module is debugged,and the construction of the leather cutting device is completed.Statistical experimental data,so as to analyze the system’s operational performance,leather cutting efficiency and leather cutting accuracy to meet the design requirements and meet the actual needs.