Experimental study on tool wear of side cutting edge in micro-milling

2nd International Workshop on Materials Science and Mechanical Engineering

机械制造;材料科学

Yang, X.M.^1 ; Cheng, X.^1 ; Wang, F.^1 ; Sun, Q.L.^1 ; Wang, W.H.^1

Shandong University of Technology, Zibo

255049, China^1

关键词: Adhesive wears;    Axial depth of cut;    Cutting edge chipping;    Micro-end mills;    Milling parameters;    Optimal parameter;    Orthogonal experiment;    Wear mechanisms;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/504/1/012102/pdf
DOI  :  10.1088/1757-899X/504/1/012102

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Micro-milling technology is becoming more and more essential in many fields in which the miniature parts are widely applied. Research of tool wear occupies an important part in micro-milling studies. In this paper, the micro end mills of 1 mm in diameter with coating TiAlN are used to conduct micro-milling parameters studies on tool wear of side cutting edge for brass H59. The wear form and wear mechanism of tools are analyzed firstly. The wear forms include coating peeling, the rounding of corner radius and cutting edge chipping, and the wear mechanisms include abrasive wear and adhesive wear. Orthogonal experiments are carried out to obtain significance order of key parameters for the wear band width of side cutting edge and the optimal parameters combination. The orthogonal experiments results show that the significance order of key parameters for wear band width from large to small is feed engagement f z, axial depth of cut a p, spindle speed n and radial depth of cut a e. The optimal parameters combination obtained is f z = 2 μm/z, a p = 0.3 mm, n = 60000 min-1, a e = 0.15 mm. The study provides a valuable reference for the selection of milling parameters to reduce tool wear in actual machining.