The Dynamic Characteristic Analysis And Simulation Of Computerized Numerical Control Roller Lathe

Based on the principle analysis of high force cutting CNC machine tool's electromechanical system and research on related native and foreign schemes in this field, the study status and the development situation of this electromechanical system are summed up in this paper. The mathematics model of high force cutting machine tool is established according to its physical system. In order to resolve the problem of heavy duty machine tool's NC(Numerical Control) refit and instruct the refitting design and debugging, the key factors which influence and affect the dynamic characteristic remarkably are analyzed by control theory. By the scientific and engineering calculating tool-SIMULINK provided by MATLAB, dynamic model which is used to simulation study can also be built up, and related analysis results are obtained in the paper.Based on the theoretical analysis and simulation study, the influence mechanism of he system in detail is achieved. Enough rigidity can reduce reverse error. Proper dump coefficient goes with good norm response characteristic and good anti-interference capability. A small load inertia may make the response quickly. Big Kv factor can improve follow performance and anti-interference capability of system.In order to improve the dynamic characteristic, optimizing setting methods for those PID regulator's parameters are proposed. Compute formulas are also established. Above all, a method according to non-overshoot principle when feeding is served for Kv factor's setting.According to CK84100 roller lathe, the simulation results of the lathe show the simplicity and feasibility and prove the validity of the theoretical analysis. The simulation method of high force cutting CNC machine tool's electromechanical system with MATLAB is powerful. The method is simple to design and free of modification of model parameters.