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[C-2011]-AN ASSESSMENT, DEFINITION, AND DETERMINATION OF THE

已有 2867 次阅读 2011-12-8 21:37 |个人分类:[Publications] 论文全文|系统分类:论文交流|关键词:学者

Proceedings of the ASME 2011 International Mechanical Engineering Congress & Exposition
IMECE2011 November 11-17, 2011, Denver, Colorado, USA,IMECE2011-63781

AN ASSESSMENT, DEFINITION, AND DETERMINATION OF THE MINIMUM UNCUT CHIP
THICKNESS OF MICROCUTTING AND IMPACT ON MACHINING NEW POWDER METALLURGY
NICKEL-BASED SUPERALLOYS

Z.Y. Shi, Z.Q. Liu, Y.B. Guo

ABSTRACT: 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.

KEYWORDS: Mminimum uncut chip thickness, microcutting, cutting mechanics, surface finish, chip morphology

2011-AN ASSESSMENT, DEFINITION, AND DETERMINATION OF THE MINIMUM UNCUT CHIP-IMEC.pdf

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