大型龙门导轨磨床工作台运动精度控制方法研究  

Research on Motion Accuracy Control Method of Large Gantry Guideway Grinder Workbench

作　　者：孔丽国 董田江 包坚 KONG Liguo;DONG Tianjiang;BAO Jian(Ningbo Haitian Precision Industry Co.,Ltd.,Ningbo 315800,China)

机构地区：[1]宁波海天精工股份有限公司,浙江宁波315800

出　　处：《计算机测量与控制》2023年第12期110-116,共7页Computer Measurement &Control

摘　　要：大型龙门导轨磨床工作台整机运动场、主轴漂移量、补偿误差均会对控制精度产生影响,因此研究新的大型龙门导轨磨床工作台运动精度控制方法;根据大型龙门导轨磨床基本结构连接形态,求解主要技术参数,实现龙门导轨磨床工作台设计;从静态、动态两个角度出发,分析立柱部件、横梁部件受力情况,确定多目标拓扑与模态有限元条件,以此分析磨床工作台的运动特性;以动静态参数求解结果和整机运动场为基础,计算主轴漂移量的取值范围,结合相关运动参数计算补偿误差数值,结合对补偿误差数值计算以及PDDF控制器结果对工作台运动精度进行控制;实验结果表明,所提方法可以将工作台运动路径拟合误差控制在0~0.07 mm范围之内,满足龙门导轨磨床工作台运动精准控制的要求,实际应用效果好。The motion field,spindle drift and compensation error of a large gantry guideway grinder workbench affect the control accuracy.Therefore,a new motion accuracy control method of the large gantry guideway grinder workbench is studied.According to the basic structural connection form of a large gantry guide grinding machine,its main technical parameters are solved to realize the design of the gantry guide grinding machine workbench.From the static and dynamic perspectives,the forces on the column and beam components are analyzed,and the multi-objective topology and modal finite element method(FEM)are determined to analyze the mo-tion characteristics of the grinding machine workbench.Based on the solution results of dynamic and static parameters and motion field of the whole machine,the value range of the spindle drift is calculated,the compensation error value is calculated in combination with the relevant motion parameters,and the motion accuracy of the workbench is controlled in combination with the compensation error and the results of the PDDF controller.The experimental results show that the proposed method can control the fitting error of the worktable motion path within the range of O~0.o7 mm,and meet the requirements of the worktable motion precise control of the gantry guideway grinder,and it provides a good practical application.

关 键 词：龙门导轨磨床 工作台 运动精度 多目标拓扑 模态有限元 运动场 主轴漂移量 补偿误差 

分 类 号：TG659[金属学及工艺—金属切削加工及机床]