基于OCCT的管材正解算法研究  

Forward Solution Algorithm of Bending Pipe Based on OCCT

作　　者：洪鸣 张薇薇[1] HONG Ming;ZHANG Weiwei(School of Mechanical and Electrical Engineering,Hohai University,Changzhou 213002,China)

机构地区：[1]河海大学机电工程学院,江苏常州213002

出　　处：《机械工程师》2025年第2期33-37,41,共6页Mechanical Engineer

基　　金：国家自然科学基金资助项目(52179129)。

摘　　要：为实现管材的精确加工,提出了一种管材正解算法。正解算法包含管材模型解析与加工数据转换两部分。为实现管材正解算法,研究了开源几何内核OpenCASCADE,首先利用OpenCASCADE中的数据交换模块,导入由B-Rep边界表示法定义的管材几何模型,利用OpenCASCADE中的开发工具解析出管材基本特征并提取轴线以获取关键控制点;然后进行加工数据转换,将控制点XYZR坐标转换成绕弯机YBCR坐标;最后验证控制点数据与加工数据的准确性,实验结果表明该算法能够准确解析管材控制点并获取精确的加工数据,提高了弯管加工的准确性并极大地降低成本。In order to realize the precise processing of pipes,a pipe forward solution algorithm is proposed.The forward solution algorithm includes two parts:pipe model analysis and processing data conversion.OpenCASCADE,an open source geometry kernel,is studied to implement the pipe forward solution algorithm.Firstly,the data exchange module in OpenCASCADE is used to import the pipe geometric model defined by B-Rep boundary representation,and the development tools in OpenCASCADE are used to parse out the basic characteristics of the pipe and extract the axis to obtain the critical control points.Then the processing data is converted,and the XYZR coordinates of the control point are converted into the YBCR coordinates of the binding machine.Finally,the accuracy of the control point data and the processing data is verified.The experimental results show that the algorithm can accurately parse out the pipe control points and obtain accurate processing data,which improves the accuracy of pipe bending processing and greatly reduces the cost.

关 键 词：数控弯管 CAM OPENCASCADE 轴线提取 正解算法 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术] TP242.2[自动化与计算机技术—计算机科学与技术]