Digital Measurement and its Error Analysis for the Machining Free-Form Surface

Abstract:

To deal with the lack of accurate and efficient inspection methods in complex free-form surfaces, three-dimensional measurement method based on the optical measurement and computer image processing technology was proposed. It adopted laser scanning technology to get point clouds of free-form surface. Used rapid measurement software to inspect precision of point cloud& CAD model. What could be the cause of machining errors was analyzed. 3D deviation inspection of complex surfaces was applied by an artifact. Detected the machining error of an important section, and outputted test report. This research provides a convenient and swift method for the inspection of free-form surface and processing quality control.

• Periodical: Applied Mechanics and Materials (Volume 664)
• Pages: 263-267
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.664.263
• Online since: October 2014
• Authors: Feng Lu*, Ning Li, Xiao Fei Zhang
• Keywords: Digital Measurement, Error Analysis, Free-Form Surfaces, Model Comparison

References

[1] ZHANG De-hai, BAI Dai-ping, YAN Guan-hai, et al: Research on sheet metal forming springback measurement base on reverse checking software. Journal of Henan University of Science & Technology, 2013(2): 21-24(in Chinese).

[2] ZOU Fuqun, CHENG Siyuan, LI Suyang, et al: Inspection for tread pattern based on 3D digital model. Journal of Modern Manufacturing Engineering, 2011(8)：22-24(in Chinese).

[3] TAN Yunli, ZHANG Jianguo, XUE Qiang: Data acquisition and processing of human body model based on three-dimensional camera system. Journal of Modern Manufacturing Engineering, 2010(6)：22-24(in Chinese).

[4] http: /www. creaform3d. com/zh.

[5] ZHANG Xuechang, WANG Yuefang, XI Juntong: The display of deviation color map in inspection of free-form surface. Journal of Shanghai Jiao tong University，2006，40(7)：1098-1102(in Chinese).

[6] SI Baoquan, LIANG Jin, LIU Qing, et al: Precision inspection of point cloud & CAD model based on constraint search sphere. Journal of Computer Integrated Manufacturing Systems, 2010, 16(5): 929-934(in Chinese).

[7] ZHANG D M. Harmonic shape images：A 3D free-form surface representation and its applications in surface matching. Pittsburghers：CMU, (1999).

[8] CHENG Siyuan, YANG Xuerong: Geomagic Qualify 3D Inspection technology and application, edited by Tsinghua University Press, BEIJING (2012), in press.

[9] WANG Ai-ling, LI Mengqun, FENG Yuqiang: NC machining theory and practical technology, edited by China Machine Press, BEIJING(2009), in press.