自然科学版 英文版
自然科学版 英文版
自然科学版 英文版
自然科学版 英文版
英文版编委
自然科学版 英文版
英文版首届青年编委

您目前所在的位置:首页 - 期刊简介 - 详细页面

中南大学学报(自然科学版)

Journal of Central South University

第48卷    第10期    总第278期    2017年10月

[PDF全文下载]    [Flash在线阅读]

    

文章编号:1672-7207(2017)10-2606-08
筒形件焊接三维全场变形测量
冯超1, 2,梁晋1, 2,牌文延1, 2,龚春园1, 2,王晓光1, 2

(1. 西安交通大学 机械工程学院 机械制造系统工程国家重点实验室,陕西 西安,710049; 2. 广东西安交通大学研究院,广东 佛山,528300)

摘 要: 针对传统测量方式难以实现焊接条件下筒形件全场变形测量的问题,提出一种筒形件焊接三维全场静态变形测量方法。首先,通过引入编码点坐标配准方法,实现不同变形状态下相同变形点的坐标统一;其次,提出一种基于深度搜索的相同变形点匹配算法,实现焊缝区弱变形点的成功匹配;最后,根据以上关键技术并借助VS2010开发环境,研制出三维全场静态变形测量系统。为验证该变形测量方法的可行性,设计并实施筒形件熔化极惰性气体保护电弧焊(MIG)和激光焊焊接实验,并采用标定十字架进行精度验证实验。研究结果表明:该方法测得的变形测量精度为0.020 mm/1 m,能够实现筒形件焊接三维全场静态变形测量,具有非接触、高精度和显示直观等优点,可为结构件焊接三维全场静态变形提供一种有效的测量方法。

 

关键词: 筒形件;焊接变形;三维测量;坐标配准;深度搜索

Measurement on 3D full-field deformation of cylindrical workpieces welding
FENG Chao1, 2, LIANG Jin1, 2, PAI Wenyan1, 2, GONG Chunyuan1, 2, WANG Xiaoguang1, 2

1. State Key Laboratory for Manufacturing Systems Engineering, School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049, China; 2. Guangdong Xi’an Jiaotong University Academy, Foshan 528300, China

Abstract:In view of full-field deformation measurement problem for cylindrical workpieces welding by traditional methods, a method was proposed to measure the three-dimensional full-field static deformation for cylindrical workpieces welding. Firstly, a method for coordinate registration by encoding points was introduced to unify the same deformation points under different deformation conditions. Then, an algorithm based on deep search for the same deformation points matching was proposed to make the weak deformation points in the weld zone match successfully. Finally, based on the above key technologies and VS2010 platform, a measurement system was developed for cylindrical workpieces three-dimensional full-field static deformation. To verify the feasibility of the proposed method, experiments of metal inert gas (MIG) welding, laser welding and accuracy verification using calibration cross were designed and conducted. The results show that the accuracy obtained by this method is 0.02 mm/1 m, and the three-dimensional full-field static deformation measurement is achieved for cylindrical workpieces welding. The method has the advantages of non-contact, high accuracy and direct display, which provides an effective method for the three-dimensional full-field static deformation of structure workpieces welding.

 

Key words: cylindrical workpieces; welding deformation; 3D measurement; coordinate registration; deep search

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
版权所有:《中南大学学报(自然科学版、英文版)》编辑部
地 址:湖南省长沙市中南大学 邮编: 410083
电 话: 0731-88879765(中) 88836963(英) 传真: 0731-88877727
电子邮箱:zngdxb@csu.edu.cn 湘ICP备09001153号