Study On Measurement And Control And Simulation Of Feed System In TX1600G Machining Center

The level of the manufacturing industry reflects a country’s comprehensive national strength.As a heavy equipment for processing and manufacturing,the development of high-end CNC machine tools is very fast,and higher requirements are put forward in high efficiency,high precision and other aspects.The machining center has powerful function and complex structure,which is a typical example of mechatronics products.In order to improve the control strategy of feed servo system in machining center and improve the error compensation,it is an effective way to improve work efficiency and machining accuracy.In this thesis,under the background of"Made in China 2025",takes the TX1600G compound boring and milling machining center as the research object,the research on monitoring and control system are carried out.The main purpose of this thesis is to establish the positioning error model of the X-axis of the feed drive system for the machining center through experiments and determine the suitable acceleration and deceleration control strategy for the feed drive system.The fuzzy PID control algorithm is applied to the servo control system to improve the monitoring and control technology of machining center.Firstly,by analyzing the data obtained from the X-axis drive system,the two influence factors of positioning errors,temperature and position were summed up.Based on such analysis,the positioning error model was established by longitudinal modeling and applied to the error compensation system.Then the model of feed drive system was established,the electromechanical simulation of feed drive system was carried out by using ADAMS and MATLAB,and the theoretical and simulation results showed that the S-type acceleration and deceleration control strategy could effectively reduce the impact due to speed change.Therefore,high-speed and high-precision machining center should adopt S-type speed control strategy.Then,for the feed drive system of machining center,fuzzy control theory is introduced on the basis of PID control to form fuzzy PID advanced control method.Simulation results showed that fuzzy PID algorithm had obvious advantages compared with conventional PID algorithm.Finally,Siemens S7-1200PLC and Hollysys servo control system were used to set up the experimental platform.The host computer and the slave computer were programmed.After debugging and testing,the visual operation can be realized and the feasibility of remote measurement and control was verified.In this thesis,based on a large number of domestic and foreign literatures,the measurement and control methods of machining center are simulated and analyzed,an optimization scheme is put forward,and the improved experimental platform is established to achieve the monitoring and control of feed drive system.The work done in this thesis is of great significance for achieving the intelligentization of CNC machining equipment and the goal of high speed,high precision and high efficiency.