Performance Analysis And Optimization Of Feed System For VL1060 Vertical Machining Center

With the introduction of the "Made in China 2025" strategic project,higher demands were placed on the manufacturing industry.For CNC machining centers that have an important position in the manufacturing industry,their performance will directly affect the development of the manufacturing industry.The feed system is a key part of the machining center.It can not only achieve multi-directional feed,but also determines machining accuracy and processing speed to a great extent.Therefore,it is of great theoretical and practical value to study the feed system of machining center.This article takes the VL1060 vertical machining center's feed system as the research object.Using ADAMS and ANSYS to study the feed system,the performance of the feed system has been improved.The following research has been done to improve the performance of the feed system:(1)Calculation and selection of ball screws,servo motors,and linear rolling guides.Interference check was performed on the three-dimensional model of the feed system,and the rationality of design and assembly was verified through calculation and inspection.(2)According to the theory of multi-body dynamics,a multi-rigid body model of vertical machining center was established in ADAMS to obtain the milling force under cutting conditions.According to the theory of flexible multibody dynamics,ANSYS software is used to flexibly process the ball screw and linear rolling guide of the feed system,and a rigid-flexible coupling model of the vertical machining center is established to obtain the speed and acceleration curve of the table.The stability of the feed system was studied through simulation analysis.(3)The finite clement method was used to complete the statics and modal analysis of the key components and the complete machine of the feed system,and the parameters such as deformation displacement value,natural frequency and mode shape were obtained.Through the analysis of these parameters,the strength properties of the designed components were studied.(4)Select the structure size to be optimized through orthogonal test,use the sensitivity analysis method and response surface method to process the size,establish the mathematical model of the workbench's quality and natural frequency,and perform quadratic regression fitting on the objective function;The MATLAB toolbox solves the function and gets the optimized dimensions of the workbench.By performing static analysis,modal analysis,and dynamic analysis on the workbench and comparing the relevant data before and after optimization,the optimized workbench is improved in terms of quality,stiffness,motion stability,natural frequency,etc.Optimized design requirements.