期刊
WOOD MATERIAL SCIENCE & ENGINEERING
卷 17, 期 5, 页码 388-396出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/17480272.2022.2086064
关键词
Machinability; WPC; built-up edge; tool edge; cutter; tool surface
资金
- National Natural Science Foundation of China [31971594]
- Natural Science Foundation of the Jiangsu Higher Education Institutions of China [21KJB220009]
- Self-Made Experimental and Teaching Instruments of Nanjing Forestry University [nlzzyq202101]
- project from Technology Innovation Alliance of Wood/Bamboo Industry [TIAWBI2021-08]
- International Cooperation Joint Laboratory for Production, Education, Research and Application of Ecological Health Care on Home Furnishing
This project aims to improve the machinability of wood-plastic composites by understanding chip and built-up edge formation. The study found that the cutting depth has a significant impact on chip formation, and a built-up edge was observed during wood-plastic composite machining. The accumulation of debris on the built-up edge was correlated with variations in cutting force and temperature.
This project aims to improve the machinability of wood-plastic composites by understanding chip and built-up edge formation, so as to help manufacturers optimize cutting performance and product quality. Chip formation and built-up edge were studied during orthogonal cutting of wood polyethylene composite with cemented carbide cutters under different conditions. During the orthogonal cutting process, segmental, ribbon, and element chips were generated. The cutting depth was found to have a great impact on the types of chips that formed. Additionally, a built-up edge was found during wood-plastic composite machining, with debris only attaching to the tool's rake face due to thermo-mechanical coupling. Such built-up edges hinder cutting stability and surface quality. Furthermore, variations in the accumulation of debris on the built-up edge corresponded to changes in cutting force and temperature. In fact, both cutting force and temperature proved to be inversely related to the rake angle and positively correlated to the cutting speed and depth. Therefore, to achieve better cutting stability and surface quality for wood-plastic composites, a larger rake angle and a reduced cutting depth are recommended because they reduce the accumulation of debris and the formation of built-up edge.
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