网格曲面多轴加工的刀轴矢量生成方法研究  

Tool Axis Vector Generation for Multi-Axis Machining of Mesh Surfaces

作　　者：文豪 徐志伟[1] 柳英杰 张揽宇 WEN Hao;XU Zhi-wei;LIU Ying-jie;ZHANG Lan-yu(School of Mechanical Engineering and Guangdong Polytechnic of Science and Technology,Guangdong Zhuhai 519090,China;School of Electromechanical Engineering and Guangdong University of Technology,Guangdong Guang‐zhou 510006,China)

机构地区：[1]广东省科技干部学院机械与汽车学院,广东珠海519090 [2]广东工业大学机电工程学院,广东广州510006

出　　处：《机械设计与制造》2024年第5期244-248,共5页Machinery Design & Manufacture

基　　金：广东省基础与应用基础研究基金联合基金青年基金项目(2021A1515110041);广州市科技计划项目(202102021288,202102021291);广东省教育厅高校科研平台和项目(2020KQNCX159,2019GKTSCX031)。

摘　　要：以网格曲面为研究对象,针对其多轴数控加工代码生成的刀具摆角控制问题,研究刀位坐标的刀轴矢量生成方法。基于网格曲面的模型数据存储特征,分析刀位坐标的求取方法与数据特点;研究面向网格曲面多轴加工的刀具摆角控制机理,提出垂直于部件的刀轴矢量直接生成方法;通过刀位坐标与网格顶点连线的夹角计算与判断,快速检索刀位坐标所对应的网格面片,并利用该面片法矢直接生成网格曲面多轴加工的刀轴矢量;借助计算机编程实现网格曲面多轴数控加工的刀轴矢量数据生成,使用UG的CLSF管理器仿真刀路及VERICUT的加工测试,验证所提方法的有效性。测试结果表明,所提方法生成的刀轴矢量可有效驱动多轴加工的摆角控制,实现网格曲面模型的多轴数控加工。When generate the NC codes of the multi-axis machining from the mash surfaces,the problem of the tool swing angle control exist.To solve this problem,a method of tool axis vector generation for the tool position coordinates is studied.Based on the data storage characteristics of the mesh surface,the calculation method and data characteristics of the tool position coordi-nates are analysis.The mechanism of tool swing angle control for multi-axis NC machining of the mash surfaces is researched,and a method that generates the tool axis vector of the tool position coordinates perpendicular to the part is proposed.Through the calculation and judgment on the angle between the tool position coordinates and the vertices of facet,the facet data corresponding to the tool position coordinates can be quickly retrieved,and the tool axis vector for multi-axis machining of the mesh surface can be directly generated by the normal vector of this facet.Finally,the tool axis vector data of the multi-axis machining from the mash surfaces can be generated by the computer programming.By using the CLSF manager in UG to simulate toolpath and the machining test in VERICUT,this proposed method is verified.The test result shows that the tool axis vector generated by this pro-posed method can effectively achieve the swing angle control and realize the multi-axis machining of the mesh surfaces.

关 键 词：网格曲面 多轴加工 刀轴矢量 摆角控制 

分 类 号：TH16[机械工程—机械制造及自动化] TH164