Abstract
Recently, minutia ball-endmill has applied for micromachining. In this paper, we described wear characteristics of TiAlN, TiCN and DLC coated minutia ball-endmill with tip radius of 0.5mm, cutting condition and hardness of workpiece (SKD11 die steel) were changed. From the results, we found that Flank wear, depth of tip wear, wear area and wear volume of DLC coated minutia ball-endmill was higter than that of another. The rerationship between wear volume and maximum of flank wear has linear.
