Abstract
Non-twisted wavy type end mill, which can reduce surface error due to cutter runout is presented, for more emphasis on the creation of a highly accurate and smooth work surface in the finish process of end milling. The performance of a newly developed end mill related to cutting force and surface error is estimated through a previously developed model to predict a surface geometry and force variation with cutter runout. It is shown that the increase of cutting force on a non-twisted wavy end mill is unavoidable, for the phase shift along axial direction of the tool is restricted. However, a highly accurate work surface which is equal to a straight end mill can be derived, even if an eccentricity between a spindle axis and a tool axis exists.
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