Experimental Evaluation of Surface Roughness in Orthogonal Micro-Milling Processes

Abstract:

Surface roughness plays a critical role in evaluating and measuring the surface quality of a machined product. Two workpiece materials have been investigated by experimental approach in order to gain a better understanding of their influence on the obtained surface roughness in the micro-milling processes. The experimental results show that: surface topography is completely different for different materials at the same cutting speed and feed rate; surface roughness increases with an increase of material grain size. Surface roughness decreases to a lowest value, and then increases with an increase of the feed rate. A new surface model to illustrate the influence of material and uncut chip thickness was developed. The model has been experimentally validated and shows more promising results than Weule’s model.

• Periodical: Applied Mechanics and Materials (Volumes 217-219)
• Pages: 1912-1916
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.217-219.1912
• Online since: November 2012
• Authors: Ji Hua Wu
• Keywords: Cutting Edge Radius, Micro-Milling, Surface Roughness (SR), Uncut Chip Thickness

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