Characteristics of damaged layer in micro-machining of copper material  

作　　者：Dong-Hee KWON Jeong-Suk KIM Myung-Chang KANG Se-Hun KWON Jong-Hwan LEE 

机构地区：[1]School of Mechanical Engineering,Pusan National University [2]National Core Research Center for Hybrid Materials Solution,Pusan National University [3]Department of Mechatronics,Busan College of Korea Polytechnic Ⅶ

出　　处：《中国有色金属学会会刊：英文版》2009年第B09期295-300,共6页Transactions of Nonferrous Metals Society of China

基　　金：supported by the National Core Research Center Program from MOST and KOSEF (No.R15-2006-022-01001-0),Korea

摘　　要：The study on damaged layer is necessary for improving the machinability in micro-machining because the damaged layer affects the micro mold life and micro machine parts. This study examined the ultra-precision micro-machining characteristics, such as cutting speed, feed rate and cutting depth, of a micro-damaged layer produced by an ultra-high speed air turbine spindle. The micro cutting force, surface roughness and plastic deformation layer were investigated according to the machining conditions. The damaged layer was measured using optical microscope on samples prepared through metallographic techniques. The scale of the damaged layer depends on the cutting process parameters, particularly, the feed per tooth and axial depth of the cut. According to the experimental results, the depth of the damaged layer is increased by increasing the feed per tooth and cutting depth, also the damaged layer occurs less in down-milling compared with up-milling during the micro-machining operation.The study on damaged layer is necessary for improving the machinability in micro-machining because the damaged layer affects the micro mold life and micro machine pans. This study examined the ultra-precision micro-machining characteristics, such as cutting speed, feed rate and cutting depth, of a micro-damaged layer produced by an ultra-high speed air turbine spindle. The micro cutting force, surface roughness and plastic deformation layer were investigated according to the machining conditions. The damaged layer was measured using optical microscope on samples prepared through metallographic techniques. The scale of the damaged layer depends on the cutting process parameters, particularly, the feed per tooth and axial depth of the cut. According to the experimental results, the depth of the damaged layer is increased by increasing the feed per tooth and cutting depth, also the damaged layer occurs less in down-milling compared with up-milling during the micro-machining operation.

关 键 词：机械加工性 微观特征 损伤层 铜材 样品制备技术 微型机器 切削速度 切削深度 

分 类 号：TH161[机械工程—机械制造及自动化]