A novel 3D optical method for measuring and evaluating springback in sheet metal forming process

被引：13
|
作者：
Zhang, Dehai [1 ]
Li, Yanqin [1 ,2 ]
Liu, Jianxiu [1 ]
Xie, Guizhong [1 ,2 ]
Su, Erwei [1 ]
机构：
[1] Zhengzhou Univ Light Ind, Mech & Elect Engn Inst, Zhengzhou 450002, Peoples R China
[2] Xi An Jiao Tong Univ, State Key Lab Mfg Syst Engn, Xian 710049, Peoples R China
来源：
MEASUREMENT | 2016年 / 92卷
关键词：
Springback; Geomagic Qualify; Photogrammetry; Measurement; THINNING COMPENSATION;
D O I：
10.1016/j.measurement.2016.06.032
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A novel 3D optical method for measuring and evaluating the springback in sheet metal forming is presented and its principle, program and steps are studied. The optical method includes a measuring method and evaluation indexes. The point cloud, obtained using photogrammetry and surface scanning systems, is used as the workpiece shape after springback. The original mould is regarded as the CAD model before springback. The point cloud and CAD model are aligned in Geomagic Qualify. A cutting line for the point cloud or CAD model can be obtained at any point in any direction of their cross sections. The springback is calculated as the difference between any two corresponding key points on the two cutting lines. The evaluation index S consists of a 3D springback value w and its vectors along x, y and z directions. Feasibility of the optical method is verified by using a refrigerator door shell. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：303 / 317
页数：15
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