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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 19    Special 1    September 2009

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Characteristics of machined surface controlled by cutting tools and conditions in machining of brittle material
Yong-Woo KIM1, Soo-Chang CHOI1, Jeung-Woo PARK2, Deug-Woo LEE3

1. Department of Nano Fusion Technology, Pusan National University, Miryang, 627-706, Korea;
2. Department of Mechanical Design Engineering, Chosun University, Gwangju, 501-759, Korea;
3. Department of Nanosystem and Nanoprocess Engineering, Pusan National University, Miryang, 627-706, Korea

Abstract:One of the ultra-precision machining methods was adapted for brittle material as well as soft material by using multi- arrayed diamond tips and high speed spindle. Conventional machining method is too hard to control surface roughness and surface texture against brittle material because the particles of grinding tools are irregular size and material can be fragile. Therefore, we were able to design tool paths and machine controlled pattern on surface by multi-arrayed diamond tips with uniform size made in MEMS fabrication and high speed spindle, and the maximum speed was about 3×105 r/min. We defined several parameters that can affect the machining surface. Those were multi-array of diamond tips (n×n), speed of air spindle and feeding rate. The surface roughness and surface texture can be controlled by those parameters for micro machining.

 

Key words: brittle material; surface roughness; surface texture; multi-arrayed tips; micro machining

ISSN 1672-7029
CN 43-1423/U

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