Study of chip shape and surface finish in ultra-precision machining

In this work, ultra-precision machining on aluminum alloys were carried out to investigate the surface quality using single point diamond tools (SPDT) cutters. Examined by SEM, the machined surfaces took on many defects such as microcracks, pits, voids or even scratches. It was found out that the cu...

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Main Author: Foo, Jong Chien.
Other Authors: Sathyan Subbiah
Format: Final Year Project
Language:English
Published: 2009
Subjects:
Online Access:http://hdl.handle.net/10356/16104
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-161042023-03-04T18:46:44Z Study of chip shape and surface finish in ultra-precision machining Foo, Jong Chien. Sathyan Subbiah School of Mechanical and Aerospace Engineering Precision Engineering and Nanotechnology Centre DRNTU::Engineering::Manufacturing In this work, ultra-precision machining on aluminum alloys were carried out to investigate the surface quality using single point diamond tools (SPDT) cutters. Examined by SEM, the machined surfaces took on many defects such as microcracks, pits, voids or even scratches. It was found out that the cutting parameter such as feed rate and the usage of different workpiece materials had a significant effect on the surface quality when ultra-precision machining these aluminum alloys. The results showed that surface finish quality got worse with increasing feed rate or using a less hard material. The purpose of this study is to show that even if ultra-precision machining at low feed rate is carried out, there will still be defects which affect the surface finish quality. Investigation of chip formation would be carried out in this work for the study of the chip geometry. The results showed that the increase in the depth of cut would create thinner deformed chips. Comparison of the theoretical and experimental shape of the chip would also be made in this project. The decision of selecting a suitable machining parameter always depends on surface finish, part machinability and part geometry. An understanding of the results from SEM together with the relationship between machining parameter and surface finish can lead to improved control over the process, which is a vital consideration for ultra-precision machining. Bachelor of Engineering 2009-05-21T03:29:34Z 2009-05-21T03:29:34Z 2009 2009 Final Year Project (FYP) http://hdl.handle.net/10356/16104 en Nanyang Technological University 80 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Manufacturing
spellingShingle DRNTU::Engineering::Manufacturing
Foo, Jong Chien.
Study of chip shape and surface finish in ultra-precision machining
description In this work, ultra-precision machining on aluminum alloys were carried out to investigate the surface quality using single point diamond tools (SPDT) cutters. Examined by SEM, the machined surfaces took on many defects such as microcracks, pits, voids or even scratches. It was found out that the cutting parameter such as feed rate and the usage of different workpiece materials had a significant effect on the surface quality when ultra-precision machining these aluminum alloys. The results showed that surface finish quality got worse with increasing feed rate or using a less hard material. The purpose of this study is to show that even if ultra-precision machining at low feed rate is carried out, there will still be defects which affect the surface finish quality. Investigation of chip formation would be carried out in this work for the study of the chip geometry. The results showed that the increase in the depth of cut would create thinner deformed chips. Comparison of the theoretical and experimental shape of the chip would also be made in this project. The decision of selecting a suitable machining parameter always depends on surface finish, part machinability and part geometry. An understanding of the results from SEM together with the relationship between machining parameter and surface finish can lead to improved control over the process, which is a vital consideration for ultra-precision machining.
author2 Sathyan Subbiah
author_facet Sathyan Subbiah
Foo, Jong Chien.
format Final Year Project
author Foo, Jong Chien.
author_sort Foo, Jong Chien.
title Study of chip shape and surface finish in ultra-precision machining
title_short Study of chip shape and surface finish in ultra-precision machining
title_full Study of chip shape and surface finish in ultra-precision machining
title_fullStr Study of chip shape and surface finish in ultra-precision machining
title_full_unstemmed Study of chip shape and surface finish in ultra-precision machining
title_sort study of chip shape and surface finish in ultra-precision machining
publishDate 2009
url http://hdl.handle.net/10356/16104
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