基于NURBS曲线的五轴工具磨床加工误差研究  

Research on Machining Technology of Five-axis Tool GrinderBased on NURBS Curve

作　　者：杨宇航 唐清春[1] 陈汉阳 李晓宇 乔鹏 周乐安 Yang Yuhang;Tang Qingchun;Chen Hanyang;Li Xiaoyu;Qiao Peng;Zhou Lean(School of Mechanical and Automotive Engineering,Guangxi University of Science and Technology,Liuzhou,Guangxi 545006,China;不详)

机构地区：[1]广西科技大学机械与汽车工程学院,广西壮族自治区柳州市545006 [2]德阳杰创科技有限公司

出　　处：《工具技术》2025年第2期124-130,共7页Tool Engineering

基　　金：国家自然科学基金(52165054);广西自然科学基金(2020GXNSFAA159142)。

摘　　要：针对五轴工具磨床加工复杂曲面存在直线圆弧插补精度不足的问题,采用NURBS曲线插补优化方法,根据NURBS曲线的插补原理,计算磨削加工时砂轮刀尖点与刀轴点的数据及相对关系;通过计算NURBS曲线插补点的曲率,推导出插补误差与进给速度的关系,进而对其产生的误差进行优化;基于Java语言开发出满足MKG6030型五轴工具磨床NURBS插补的专用后置处理器;采用NUMROTO软件对某叶根铣刀试验件进行程序编制及实际加工验证。试验证明,该插补方法可以有效提高刀具前刀面的精度,验证了该方法的可行性。Aiming at the problem of insufficient accuracy of linear arc interpolation in five-axis tool grinding machine with complex surface,a NURBS curve interpolation optimization method is proposed.Through the interpolation principle of NURBS curve,the data and relative relationship between the grinding wheel tip point and the tool axis point during grinding are calculated.By calculating the curvature of NURBS curve interpolation point,the relationship between interpolation error and feed speed is deduced,and then the error is optimized.Based on the Java language,a special post-processor for NURBS interpolation of MKG6030 five-axis tool grinder is developed.A blade root milling cutter test piece is programmed and verified by NUMROTO software.The experimental results show that the interpolation method can effectively improve the accuracy of the tool rake face,and the feasibility of the method is verified.

关 键 词：五轴工具磨床 NURBS曲线插补 叶根铣刀 插补误差 

分 类 号：TG714[金属学及工艺—刀具与模具] TH161.5[机械工程—机械制造及自动化]