Effect of Machining Velocity in Nanoscale Machining Operations

9th Curtin University of Technology Science and Engineering International Conference 2014

自然科学;工业技术

Islam, Sumaiya^1 ; Ibrahim, Raafat^2 ; Khondoker, Noman^1

Department of Mechanical Engineering, Faculty of Engineering and Science, Curtin University Sarawak, Miri, Sarawak

98009, Malaysia^1

Department of Mechanical and Aerospace Engineering, Monash University, Clayton

VIC

3800, Australia^2

关键词: Crystallographic orientations;    Cutting forces;    Elastic and plastic deformation;    Elastic recovery;    In-situ observations;    Machining operations;    Machining parameters;    Nanoscratching;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/78/1/012030/pdf
DOI  :  10.1088/1757-899X/78/1/012030

来源: IOP

【 摘 要 】

The aim of this study is to investigate the generated forces and deformations of single crystal Cu with (100), (110) and (111) crystallographic orientations at nanoscale machining operation. A nanoindenter equipped with nanoscratching attachment was used for machining operations and in-situ observation of a nano scale groove. As a machining parameter, the machining velocity was varied to measure the normal and cutting forces. At a fixed machining velocity, different levels of normal and cutting forces were generated due to different crystallographic orientations of the specimens. Moreover, after machining operation percentage of elastic recovery was measured and it was found that both the elastic and plastic deformations were responsible for producing a nano scale groove within the range of machining velocities from 250-1000 nm/s.