摘要
针对航发叶片打磨过程中点云分割效果差和轨迹规划中曲面拟合所带来的计算量大的问题,提出了一种基于点云的航发叶片分割及打磨轨迹规划方法,旨在改善点云分割效果并降低计算量。通过结构光相机采集待打磨叶片点云,进行滤波等预处理,并对随机采样一致性(Random Sample Consensus,RANSAC)平面分割算法进行改进,提升算法效率。设计一种结合点云颜色信息的区域生长分割算法,实现叶片待打磨区域的稳定分割。提出一种直接基于点云的三重截面法,配合B样条曲线拟合算法生成预打磨轨迹,并基于等残高算法优化行距,完成打磨轨迹规划。经实验验证,平面分割算法相较于传统方法效率提升40.25%,数据处理效率大大提高。此外,通过改进的区域生长分割算法,叶片打磨轨迹规划效率得到明显提高,其实现效果显著增强。
Aiming at the problem of poor point cloud segmentation effect in the grinding process of aviation engine blades and the large amount of calculation caused by surface fitting in trajectory planning,a point cloud based method for aircraft engine blade segmentation and grinding trajectory planning was proposed,aiming to improve point cloud segmentation effect and reduce the amount of calculation.The point cloud of the blade to be polished was collected by the structured light camera,pre-processed such as filtering was carried out,and the Random Sample Consensus(RANSAC)plane segmentation algorithm was improved to improve the efficiency of the algorithm.A region growing segmentation algorithm combined with point cloud color information was designed to achieve stable segmentation of the blade area to be polished.A triple section method directly based on point cloud was proposed,combined with B-spline curve fitting algorithm to generate pre-grinding trajectory,and based on equal residual height algorithm to optimize line spacing,complete grinding trajectory planning.It has been verified by experiments that the efficiency of the plane segmentation algorithm is 40.25%higher than that of the traditional method,and the data processing efficiency is greatly improved.In addition,through the improved region growing segmentation algorithm,the efficiency of blade grinding trajectory planning is significantly improved,and its realization effect is significantly enhanced.
作者
马国庆
刘启畅
刘珺玮
曲合拉•金恩斯
MA Guoqing;LIU Qichang;LIU Junwei;JINENSI Quhela(School of Mechanical and Electrical Engineering,Changchun University of Science and Technology,Changchun 130022,China;Chongqing Research Institute,Changchun University of Science and Technology,Chongqing 401121,China;Altay Regional Vocational and Technical School,Altay 836599,China)
出处
《现代制造工程》
CSCD
北大核心
2024年第4期102-108,共7页
Modern Manufacturing Engineering
基金
吉林省科技发展计划项目(YDZJ202301ZYTS263,YDZJ202301ZYTS423)
重庆市自然科学基金项目(cstc2021jcyj-msxmX0989)。
关键词
叶片打磨
平面分割
叶片点云分割
轨迹规划
blade grinding
plane segmentation
blade point cloud segmentation
trajectory planning
