a novel surface quality evaluation method in ultra-precision raster milling using cutting chips论文.pdf

Journal of Materials Processing Technology 219 (2015) 328–338 Contents lists available at ScienceDirect Journal of Materials Processing Technology j o u r n a l h o m e p a g e : w w w. elsev /locate/jmat protec A novel surface quality evaluation method in ultra-precision raster milling using cutting chips Guoqing Zhang a , Suet To a,b,∗ a State Key Laboratory of Ultra-Precision Machining Technology, Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong b Shenzhen Research Institute of The Hong Kong Polytechnic University, Shenzhen, PR China a r t i c l e i n f o a b s t r a c t Article history: Although online surface quality evaluation is important in ultra-precision machining technologies, very Received 25 January 2014 little research has been reported on the topic. In this paper, cutting chips were employed to evaluate Received in revised form 7 August 2014 machined surface quality online under the occurrence of tool wear in ultra-precision raster milling. Accepted 12 October 2014 Cutting chips were collected and examined by a 3D scanning electron microscope. The inspected cross- Available online 22 October 2014 sectional shape of ‘ridges’ imprinted by the tool fracture was approximated into two geometric elements so that it could be determined by a mathematical model. The geometric elements for every ridge were Keywords: assembled