复杂曲面的形状误差评定方法研究  

Method of Form Error Evaluation for Complex Surfaces

作　　者：陈岳坪[1] 靳龙[1] 李书平[1] 陈艺 

机构地区：[1]广西科技大学广西汽车零部件与整车技术重点实验室,广西柳州545006 [2]柳州市产品质量监督检验所,广西柳州545001

出　　处：《机械设计与制造》2014年第7期215-217,共3页Machinery Design & Manufacture

基　　金：国家十二五科技支撑计划(2012BAF12B18);广西自然科学基金资助项目(桂科自2011GXNSFF018004);广西科学研究与技术开发计划项目(桂科攻12118015-7B;12118017-3);广西教育厅科研重点资助项目(2013ZD048);广西科技大学科学研究基金资助项目(院科博12Z15);广西重点实验室建设项目(13-051-38);广西制造系统与先进制造技术重点实验室主任课题(桂科能11-031-12-011)

摘　　要：随着制造业技术和装备的不断进步,复杂曲面零件的加工精度要求愈来愈高,其形位误差的检测与评定是机械加工中十分重要的环节。为了实现复杂曲面的形状误差评定,介绍了形状误差的定义及评定步骤。以工程上常用的双三次B样条曲面描述复杂曲面模型,提出采用网格法求取点到曲面的最小距离。以优化理论为基础,介绍了网格法的计算原理。采用关节臂测量机对一个B样条曲面零件获取测量数据,以Visual C++6.0为开发工具,实现了该实例曲面的形状误差评定,验证了所采用误差评定方法的有效性。With the development of manufacturing technology and equipment, the demand for parts with precise complex surfaces is increasing The inspection and evaluation of complex surfaces are very important processes during the machining The definition of form error and the calculation processes of error evaluation are given for complex surface. Then the mathematic model of complex surfaces is expressed through bi-cubic B-spline surfaces. A grid method is presented to obtain the shortest distances from the measurement points to the surface. The calculation principle of the grid method is discussed in detail Some measurement data for a complex component with a B-spline surface are obtained using an articulated arm coordinate measuring machine. Using these measurement data, the form error result of this surface is obtained by taking Visual C＋＋ 6.0 as the development tool. Thus the effectiveness of the error evaluation method is verified by the example component.

关 键 词：复杂曲面 形状误差 网格法 B样条曲面 

分 类 号：TH16[机械工程—机械制造及自动化]