High precision and fast solution method for linearized assembly contact point of geometric error surface

2019 International Conference on Advanced Electronic Materials, Computers and Materials Engineering

无线电电子学;计算机科学;材料科学

Liu, Zhihua^1 ; Zhang, Zhijing^1 ; Jing, Xin^1 ; Zhang, Weiming^1 ; Wang, Zifu^1 ; Shang, Ke^1

Beijing Institute of Technology, No. 5 South Zhong Guan Cun Street, Haidian Beijing

100081, China^1

关键词: Actual contacts;    Assembly process;    Fast solution method;    Geometric errors;    High-precision;    Manufacturing errors;    Pose predictions;    Positional relationship;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/563/3/032021/pdf
DOI  :  10.1088/1757-899X/563/3/032021

来源: IOP

【 摘 要 】

The geometric error modeling method for assembly[1] proposes a feasible basis for the assembly process considering manufacturing error. However, contacting two mounting surfaces with geometric error and finding their actual contact points are two main difficulties in the study of real three-dimensional parts assembly methods. A high-precision and fast solution method for linearized assembly contact points considering geometric errors is proposed by calculating the point cloud spatial pose of the actual contact surface. This method is suitable for spatial pose calculation in high precision plane assembly of rigid parts, which enables fast, accurate and quantitative solution of the positional relationship of components during assembly and measurement, and improves the accuracy and efficiency of spatial pose prediction and control.