Journal ArticleDOI
Effects of the friction coefficient on the minimum cutting thickness in micro cutting
Reads0
Chats0
TLDR
In this paper, the relationship between the friction of a tool-workpiece and the minimum cutting thickness in micro cutting was investigated and an ultra-precision cutting model was proposed in which the tool edge radius and the friction coefficient were the principal factors determining the minimum cut thickness with a continuous chip.Abstract:
In the ultra precision diamond cutting process, the rake angle of the tool is likely to become negative because the edge radius of tool is considerably large compared to the sub-micrometer depth of cut. The round edge of the tool might sometimes cause plowing results in a poor surface, or burnishing which results in a shiny surface depending on the depth of cut. This study deals with the relationship between the friction of a tool-workpiece and the minimum cutting thickness in micro cutting. Proposed is an ultra precision cutting model in which the tool edge radius and the friction coefficient are the principal factors determining the minimum cutting thickness with a continuous chip. According to the model, a smaller edge radius and a higher friction coefficient make the cutting depth thinner. The experimental results verify the proposed model and provide various supporting evidence.read more
Citations
More filters
Journal ArticleDOI
Investigation of micro-cutting operations
TL;DR: A survey of the current efforts in mechanical micro-machining research and applications, especially for micromilling operations, can be found in this paper, where the authors suggest areas from macro-milling that should be examined and researched for application to the improvement of micro-mechanical cutting processes.
Journal ArticleDOI
Maximum undeformed equivalent chip thickness for ductile-brittle transition of zirconia ceramics under different lubrication conditions
TL;DR: In this paper, the critical maximum undeformed equivalent chip thickness for ductile-brittle transition (DBhmax-e) of zirconia ceramics under different lubrication conditions was investigated.
Journal ArticleDOI
Size effect and tool geometry in micromilling of tool steel
TL;DR: In this paper, the size effect in micromilling hardened tool steel was observed by studying the effect of the ratio of undeformed chip thickness to the cutting edge radius on process performance, and how this ratio drove the specific cutting force, surface finish and burr formation in micro-scale machining.
Journal ArticleDOI
A review of surface roughness generation in ultra-precision machining
TL;DR: In this article, a review of the current state of the art in studying the surface roughness formation and the factors influencing surface rouness in UPM is presented. And several principle conclusions about the challenges and opportunities faced by industry and academia are discussed.
Journal ArticleDOI
Modeling of minimum uncut chip thickness in micro machining of aluminum
TL;DR: In this article, the authors investigated the MUCT of rounded-edge tools and proposed analytical models based on identifying the stagnant point of the workpiece material during the machining process.
References
More filters
Journal ArticleDOI
Effect of diamond tool sharpness on minimum cutting thickness and cutting surface integrity in ultraprecision machining
TL;DR: In this article, the relationship between the cutting edge radius and the minimum cutting thickness was analyzed, and the effect of cutting edge sharpness on the machined surface integrity was investigated.
Journal ArticleDOI
Effect of Tool Edge Geometry on Energy Dissipation in Ultraprecision Machining
D.A. Lucca,Y.W. Seo,R. Komanduri +2 more
TL;DR: In this article, the effect of single crystal diamond tool edge geometry on the resulting cutting and thrust forces and specific energy in the ultraprecision orthogonal flycutting of Te-Cu was made.
Book
Tribology in Machine Design
TL;DR: The concept of tribodesign is introduced in this article, and the basic principles of tribology elements of contact mechanics friction, lubrication and wear in lower kinematic pairs sliding element bearings friction, liveness and wear of rolling contact bearings and efficiency of involute gears.
Journal ArticleDOI
Machinability of Copper in Ultra-Precision Micro Diamond Cutting
TL;DR: In this article, the results of an experimental study on micro-machining of copper with single crystal diamond tools are presented, where two kinds of diamond cutting of copper were carried out on an ultra-precision fly cutting machine, one of which is conventional three dimensional fly cutting employing a diamond tool with circular edge, and the other quasi-orthogonal cutting.
Journal ArticleDOI
Energy dissipation in the ultraprecision machining of copper
TL;DR: In this article, an experimental study of the forces involved in the orthogonal single point diamond machining of oxygen free high conductivity (OFHC) copper and fine grain copper was performed.