• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2020, Vol. 56 ›› Issue (7): 127-150.doi: 10.3901/JME.2020.07.127

• 数字化设计与制造 • 上一篇    下一篇



李文龙1, 李中伟2, 毛金城1   

  1. 1. 华中科技大学数字制造装备与技术国家重点实验室 武汉 430074;
    2. 华中科技大学材料成形与模具技术国家重点实验室 武汉 430074
  • 收稿日期:2018-11-11 修回日期:2019-06-18 出版日期:2020-04-05 发布日期:2020-05-12
  • 作者简介:李文龙(通信作者),男,1980年出生,博士,教授,博士研究生导师。主要研究方向为复杂零件精密测量、机器人加工。E-mail:wlli@mail.hust.edu.cn;
  • 基金资助:

The Development and Application Review of iPoint3D Software for Surface Inspection

LI Wenlong1, LI Zhongwei2, MAO Jincheng1   

  1. 1. State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong University of Science and Technology, Wuhan 430074;
    2. State Key Laboratory of Material Processing and Die&Mould Technology, Huazhong University of Science and Technology, Wuhan 430074
  • Received:2018-11-11 Revised:2019-06-18 Online:2020-04-05 Published:2020-05-12

摘要: 三维光学测量为大型复杂零件精密制造提供了新手段,但实际操作时面临两大难题:其一,非接触式光学测量存在数据规模大、测点噪音与层叠、测点密度不均、初始位姿任意、曲面误差计算难等诸多问题;其二,缺乏统一的数据存储格式、专用检测工艺库和批处理操作,需多款商业软件人机反复交互,效率低下、一致性差。针对这些难题,系统介绍了相位移面阵测量原理、点云微分信息估计、点云精简/光顺、点云-曲面匹配、点云-曲面误差计算等大规模测点处理算法,以此为基础综述了iPoint3D软件开发层次结构、主要功能模块、人机操作界面、IPD数据存储格式,并给出了iPoint3D软件批处理操作的实现方法和检测报告生成流程。最后介绍了完全自主开发的iPoint3D软件在汽车曲轴检测、航空叶片检测、锻造大叶片变形检测、机器人磨削叶片余量分配、机器人铣削蒙皮轨迹计算、核主泵法兰面机器人检测、柔性曲面共形打印视觉定位等工业场景的计算过程和应用效果,并讨论了复杂曲面零件三维光学测量的发展趋势。

关键词: iPoint3D软件, PowerScan扫描仪, 大规模测点处理, 复杂曲面检测, 点云-曲面匹配, 批处理操作

Abstract: The 3D optical measuring provides a new method for the precise manufacturing, but it encounters two challenges: 1) In non-contact optical measuring, there are the problems of large-scale data, measuring noise/overlapping, uneven point density, arbitrary initial pose and intractable point-surface error calculation; 2) It requires multi-commercial software to carry out heavy human-computer interaction, due to the absence of uniform data format, special inspection database and batch processing operation. This will lead to low efficiency and consistency in practice. The large-scale data processing algorithms is systematically introduced, such as phase-shifting measuring principle is systematically introduced, differential information estimation, point simplification/smoothing, point-surface matching, point-surface error calculation, and then presents the base development hierarchy, main function module, human-machine operation interface, IPD data format and batch processing operation of iPoint3D software. Finally, this paper presents the calculation process and application effect of self-developed iPoint3D software in car-crankshaft profile inspection, aero-blade profile inspection, large-blade deformation inspection, blade allowance distribution of robotic grinding, machining path generation of robotic milling, pump-seal-groove robotic inspection and visual localization of flexible-surface conformal printing, and discusses the future development trend of complex surface parts with 3D optical measuring. *

Key words: iPoint3D software, PowerScan scanner, large-scale measuring point processing, complex surface inspection, point-surface matching, batch processing operation