Transactions of Materials and Heat Treatment

Title：Detection on cover contour based on laser ranging sensor

Authors： Sun Weiling Li Wei Wei Wei Zhang Feng Li Kaiwen Liu Bo

Unit： Beijing Research Institute of Mechanical ＆ Electrical Technology Ltd Hubei Tri-Ring Forging Co Ltd SAIC-GM-Wuling Automobile Co Ltd

KeyWords： cover part laser ranging sensor stamping defect inflow amount contour detection

ClassificationCode：TG386

year,vol(issue):pagenumber：2020,45(12):165-177

Abstract：

In order to monitor the forming quality of cover part in real time, the cover contour detection method based on laser ranging sensor was invented. For the engine hood inner panel, the inflow amount of sheet was analyzed by software CAE, and the defect analysis method based on the inflow amount of sheet was proposed. In order to measure the inflow amount of sheet accurately, according to the inflow distribution, eight laser ranging sensors were arranged along the contour of stamping part, and the distances between laser ranging sensors at different positions and the edge of forming sheet were detected respectively. Furthermore, the coordinates of the eight characteristic points along the sheet contour were determined by the laser ranging sensor, and then the measurement data of the sample points were converted to the same coordinate system by coordinate translation, coordinate rotation and other coordinate conversion methods. After the characteristic points in the unified coordinate system were obtained, the curve fitting was performed by the interpolation algorithm to quickly generate the cover contour. Finally, a method of judging the forming quality by the stamping part contour was obtained.

Funds：

上汽通用五菱汽车股份有限公司冲压模具工艺参数智能监控管理系统

孙伟领（1992-），男，硕士，助理工程师 E-mail：854679470@qqcom

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