Dynamics Modeling and Simulation Analysis of the Vertical Machining Center Dual-drive Feed System

In order to improve the dynamic performance of the dual-drive feed system of vertical CNC machine tools, according to the vertical machine center KSMC1250 Y axis dual-drive feed system for the study, based on the d Alembert's principle of mechanical dynamics, contained the bearing friction torque, guide friction, backlash and other facts, the model of dual-drive feed system was established. The Matlab/Simulink simulation model is established by using numerical simulation method, the paper analyzed the influence of spindle box weight, the output torque of servo motor, the position parameters of gravity center and the control parameters on the feed system. The results showed that the spindle box weight and the servo motor output torque affected the spindle box feed speed, the position loop gain and speed adjusting gain affected the spindle box to achieve uniform time, while the position of gravity center parameters of spindle box spindle box had little influence on running speed. The conclusion of the study provided a theoretical basis for the design of the vertical CNC machine feed system.