Effects of crystallographic structure on machining performance with polycrystalline oxygen free copper by a single crystalline diamond micro-tool

X Ding, L. C. Lee, D. L. Butler, K. C. Shaw

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Abstract

A study was carried out to investigate effects of crystallographic structure on the machining performance with polycrystalline oxygen free copper (OFC) using a single crystalline diamond (SCD) micro-tool. The SCD micro-tool used in this study fabricated with a focused ion beam (FIB) has a cutting length of around 30 μm on the primary clearance face. It was found that a change in crystallographic orientation resulted in a variation in machining force, chip thickness and shear angle, leading to a change in machined surface integrity. When a micro-size tool traverses within a grain at a machining direction aligned with a particular crystallographic orientation, the work material in front of the machining tool is found to be severely deformed. If the orientation changes to a less favorable orientation, this may lead to a much reduced shear angle, a thicker chip, striation at the chip back, higher machining forces and a degraded machined surface. This study contributes to the understanding of the physics of micro scale mechanical machining (micro-machining).

Original languageEnglish
Title of host publicationAdvances in Precision Engineering
Place of PublicationEnfield, NH
Pages31-35
Number of pages5
Volume447-448
DOIs
Publication statusPublished - 30 Sep 2010
EventICoPE2010 and 13th ICPE International Conference on Precision Engineering - , Singapore
Duration: 28 Jul 201030 Jul 2010

Publication series

NameKey Engineering Materials
Volume447-448
ISSN (Print)1013-9826

Conference

ConferenceICoPE2010 and 13th ICPE International Conference on Precision Engineering
CountrySingapore
Period28/07/1030/07/10

Keywords

  • crystallographic orientation
  • micro-machining
  • SCD micro- tool

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