标题：An assessment, definition, and determination of the minimum uncut chip thickness of microcutting and impact on machining new powder metallurgy nickel-based superalloys
作者：Shi, Z.Y. ;Liu, Z.Q. ;Guo, Y.B.
作者机构：[Shi, Z.Y. ;Liu, Z.Q. ] Dept. of Mechanical Engineering, Shandong University, Jinan, Shandong 250061, China;[Shi, Z.Y. ;Guo, Y.B. ] Dept. of Mechanica 更多
会议名称：ASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011
会议日期：11 November 2011 through 17 November 2011
来源：ASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011
关键词：Chip morphology; Cutting mechanics; Microcutting; Mminimum uncut chip thickness; Surface finish
摘要：The uncut chip thickness is comparable to the cutting edge radius in micromachining. If the uncut chip thickness is less than a critical value, there will be no chip formation. This critical value is termed as the minimum uncut chip thickness (MUCT). Although minimum uncut chip thickness has been well defined in orthogonal cutting, it is often poorly understood in practical complex turning and milling processes. This paper presents an analysis of the state-of-art research on minimum uncut chip thickness in precision micro-machining. The numerical and experimental methods to determine MUCT values and their effects on process mechanics and surface integrity in microcutting will be critically assessed in this paper. A set of definitions of minimum uncut chip thickness for three-dimensional turning and milling processes are presented. In addition, a detailed discussion on the characteristics of different methods to determine minimum uncut chip thickness and several unsolved problems are proposed for the future work. Copyright © 2011 by ASME.