摘要
提出一种应用非接触式三维激光扫描仪测量对接试样焊接变形的新方法.在板材上钻孔并放置钢珠用于精确定位,焊接前后应用激光扫描仪对板材和钢珠进行扫描,输出相应的点云文件.应用逆向工程软件Imageware对构件焊接前后的点云文件进行分析和处理,最终得到钢珠球心在焊板上的垂直距离的点的三维坐标.结果表明,该方法解决了由于高温带来的测量点定位困难的问题,可精确计算焊接变形过程中的角变形、弯曲变形等,对于深入研究焊接变形的机理、实现焊接变形的精确控制具有重要意义.
A new method was proposed to measure the welding deformatioin of the butt-welding joints by using the noncontact three-dimensional laser scanner.The steel balls were placed onto the drilled holes for the purpose of accurate positioning.Before and after welding experiment,the butt-welding joints and steel ball were scanned by the laser scanner to gain the corresponding point cloud files.After being analyzed by the imageware software,the final three dimensional coordinates of the steel balls on surface of the plate would be obtained.Results indicated that this method could solve the difficult positioning problem because of high temperature,which might calculate the angular distortion and deflection deformation during welding process.It also contributed to understand the mechanism of welding deformation and realize the accurate positioning.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2011年第12期9-12,113,共4页
Transactions of The China Welding Institution
基金
中国博士后科学基金项目(20100480250)
自然科学基金资助项目(50505019
50935008)
教育部新世纪优秀人才支持计划资助项目(NCET-07-0503)
浙江省科技计划资助项目(2009C21019)
关键词
焊接变形
对接试样
三维激光扫描
角变形
弯曲变形
welding deformation
butt-welding sample
three dimensional laser scan
angular deformation
bending deformation
