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A study of the cutting performance of poly-crystalline oxygen free copper with single crystalline diamond micro-tools
Singapore Institute of Manufacturing Technology (SIMTech), 71 Nanyang Drive, Singapore 638075, Singapore.
Singapore Institute of Manufacturing Technology (SIMTech), 71 Nanyang Drive, Singapore 638075, Singapore.ORCID iD: 0000-0002-0101-0062
Singapore Institute of Manufacturing Technology (SIMTech), 71 Nanyang Drive, Singapore 638075, Singapore.
Singapore Institute of Manufacturing Technology (SIMTech), 71 Nanyang Drive, Singapore 638075, Singapore.
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2012 (English)In: Precision engineering, ISSN 0141-6359, E-ISSN 0401-6359, Vol. 36, no 1, 141-152 p.Article in journal (Refereed) Published
Abstract [en]

A study was carried out to investigate the crystallographic effects on the performance of cutting poly-crystalline oxygen free copper C10200 (OFC) with single crystalline diamond (SCD) micro-tools. At both large cutting depth and cross-feed rate, as the micro-tool traversed a grain with a crystallographic orientation less favorable for a stable machining process, the work material in front of the rake face was found to be severely deformed. This may lead to a reduced shear angle, thick chip, striation at the back of the chip, high cutting forces, degraded machined surface and the possibility of burr formation. The results showed minimal variations in the machined surface integrity and cutting forces compared to cut amorphous NiP plating with micro-tools. For a high cutting depth, burrs were also observed due to material deformation and pile-up occurring at the groove edges since the localized stress probably built up in front of the rake face. Cutting strategies were demonstrated to improve the performance of cutting OFC with micro-tools and to generate high aspect ratio micro-pillar arrays.

Place, publisher, year, edition, pages
2012. Vol. 36, no 1, 141-152 p.
Keyword [en]
Crystallographic effects, Diamond micro-tool, Machined surface integrity, Orthogonal cutting with a micro-tool
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:hj:diva-16623DOI: 10.1016/j.precisioneng.2011.09.001OAI: oai:DiVA.org:hj-16623DiVA: diva2:454625
Available from: 2011-11-07 Created: 2011-11-07 Last updated: 2015-06-01Bibliographically approved

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CiteExportLink to record
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