标题：Chip formation in high-speed milling of titanium alloy with PCD tools
作者：Li, An Hai ;Zhao, Jun ;Zheng, Hong Guo ;Lu, Yong Hong
作者机构：[Li, An Hai ;Zhao, Jun ] Key Laboratory of High Efficiency and Clean Mechanical Manufacture of MOE, School of Mechanical Engineering, Shandong Univers 更多
会议名称：6th International Conference on High Speed Machining, ICHSM 2014
会议日期：24 July 2014 through 25 July 2014
来源：Materials Science Forum
关键词：Chip morphology; High-speed machining; Saw-tooth chip; Titanium alloy
摘要：This paper presents a detailed analysis of chip morphology through an experimental study of high-speed milling of Ti-6Al-4V alloy with PCD tools. Milling tests were conducted for cutting speed range from 125 m/min to 2000 m/min with water-soluble cutting fluid. The collected chips were firstly examined with a digital cameras and the free surface of the chips was analyzed by a scanning electron microscope (SEM). Geographical parameters of chip morphologies were described in saw-tooth/lamella frequency on the free surface and chip width. Experimental results show that the variation of chips in high-speed end milling of Ti-6Al-4V alloy is as follows, long and straight-shaped → spiral-shaped → curly-shaped → irregular-shaped. The free surface of chips exhibits saw-tooth lamella structures. The lamella becomes clearer and more obvious at higher cutting speeds. Within the same measurement distance, there is a sharp decrease in the lamella number within same measuring range. This should be attributed to the enhancement of the thermal-mechanical coupled field applied to the chip formation processes. © (2014) Trans Tech Publications, Switzerland.