期刊
OPTICS AND LASER TECHNOLOGY
卷 123, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.optlastec.2019.105925
关键词
Laser engineered net shaping; Real time control; Molten pool; Dual-color image; Bounding rectangle
资金
- independent innovation project from Province Anhui, China [13Z02009]
- key project from intelligent manufacturing institute of Hefei University of Technology, China [IMICZ2015003]
This paper introduces a real time control system for laser engineered net shaping, to improve the machining accuracy of workpiece. A coaxial CCD image system with a dual wavelength narrow-band filter is built to obtain the size information of molten pool. The width of molten pool is extracted by the minimum bounding rectangle method and used as the feedback for molten pool control. The experimental results show that the dimensional accuracy of the workpiece is significantly improved, especially for curved thin-walled workpieces.
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