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http://dx.doi.org/10.3795/KSME-A.2015.39.1.095

Relationship Between Flat End-mill Shape and Geometrical Characteristics in Side Walls Generated by End-milling Process  

Kim, Kang (School of Mechanical Systems Engineering, Kookmin Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.39, no.1, 2015 , pp. 95-103 More about this Journal
Abstract
This paper presents the effects of the tool shape on the geometrical characteristics of flat end-milled side walls. A tool shape is characterized by such parameters as helix angle, number of cutting edges, and diameter. The geometrical characteristics of the side walls are represented by the surface profiles in the feed and axial directions, which are orthogonal to each other. The geometrical defects in each direction are estimated based on the instantaneous apparent cutting areas, which are represented by the interference area between the tool and workpiece and that between the cutting edge and workpiece. It is confirmed that a geometrical defect in the feed direction is formed when the tool leaves the workpiece and the curvature of the tool path changes. Defects in the axial direction are also found in the side walls, except for the defect zone in the feed direction. An up-cut using an end-mill with a steeper helix angle, a greater number of cutting edges, and a smaller diameter are thus found to improve the geometrical accuracy of end-milled side walls.
Keywords
End-Milling Process; Flat End-Mill; Side Walls; Geometrical Characteristics; Helix Angle; Up Cut; Down Cut;
Citations & Related Records
Times Cited By KSCI : 8  (Citation Analysis)
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