基于三角网格模型的复杂曲面测点规划.pdfVIP

2015年 12月 机 床 与 液 压 Dec . 2015 第 43 卷 第 23 期 MACHINETOOL 1 HYDRAULICS Vol. 43 No . 23 D O I : 10.3969/ j . issn. 1001-3881. 2015. 23. 011 基于三角网格模型的复杂曲面测点规划 陈岳坪\靳龙\卢海燕\陈艺2 (1.广西科技大学机械工程学院，广西柳州545006$ 2.柳州市产品质量监督检验所，广西柳州545001) 摘要：复杂曲面零件检测过程中的测点布局规划方法是影响曲面检测效率的关键因素之一。介绍曲面测量的截面线 法，基于三角网格模型的文件格式，提出基于中点偏移拋物线法的触测点生成方法，在此基础上采用非均匀B 样条曲线的 反求插值法求取截面线，进而采用弦高法进行测点自适应规划。以Visual C++6.0为开发工具，实现了复杂曲面测点的自 适应规划。 关键词：复杂曲面；测点规划；网格模型；中点偏移拋物线法；检测效率 中图分类号：TP391.7 文献标志码 ：A 文章编号：1001-3881 (2015) 23-042-4 Measured Point Planning of Complex Surfaces Based on Triangular Mesh Models CHEN Yueping1，JIN Long1，LU H aiyan1，CHEN Y i 2 (1. School of Mechanical Engineering，Guangxi University of Science and Technology ， Liuzhou Guangxi 545006 ，China ； 2. Liuzhou Product Quality Supervision Testing Institute ，Liuzhou Guangxi 545001，C hina ) Abstract : The measured point planning of complex surfaces is one of the most crucial factors influencing the inspection efficiency. The principle of the section line method was introduced. The creation method of touch measured points offset parabolic intersection using triangular mesh models. Then the non-uniform B-spline curve was used to obtain the section lines. The method of chord deviation was used to obtain measured points with adaptive distribution. The measured point faces was realized by taking Visual C ++ 6. 0 as the development tool. Keywords ： Complex surface； Measured point planning ； Mesli model； Midpoint offset parabolic intersection 〇 前言 也要尽量使测点分布的疏密与曲面的曲率变化相适 随着航空、航天、汽车、模具等现代工业的飞速 应，并使测量结果便于后续的曲面加工精度评价。曲 发展，越来越多的零件采用复杂曲面的形式