KEM 2009 DOI: 10.4028/ View full text
Bo Xiao Ma, Mitsuyoshi Nomura, Takahiro Kawashima, Takayuki Shibata, Yoshihiko Murakami, Masami Masuda, Osamu Horiuchi

Abstract: In micro drilling, the run-out of drill due to rotational motion error of spindle or eccentric chucking of drill causes machining error and larger radial forces which may break the drill. Furthermore, because the spindle speed is very high, rotating bending fatigue of drill may dominate the tool life. In the previous work, relationship between bending deflection and radial cutting force, and fatigue fracture of drill were investigated theoretically and experimentally. The objective of this paper is to investig…

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