Ellipsoid End Mill Design and Tool Path Generation Algorithm

doi:10.3901/JME.2018.15.199

Abstract

Abstract: With the increasing complexity of the workpiece surfaces in aerospace and automotive mold and other areas, more and more tools with different shapes and performance have been needed. A kind of cutting tool is designed with ellipsoid revolving surface of tool's end, which called ellipsoid end mill as follows. The parametric geometric model of ellipsoid end mill is established, which provides a theoretical basis for the parametric design of the tool. Three kinds of cutting edge curves of ellipsoid end mill are proposed(cutting edge with constant helix angle, the orthogonal spiral cutting edge and a novel cutting edge). Accurate tool cutting edge curve models provide a theoretical basis for the precise manufacture of ellipsoid end mill. The path generation algorithm of three-axis NC machining tool path of ellipsoid end mill is given and the correctness and feasibility of the algorithm are verified by experiments. The cutting performance of ellipsoid end mill is analyzed and the advantage is verified as well, which provides technical support for the extension and application of ellipsoid end mill. The parametric design and application research for ellipsoid end mill provides method and theoretical provide the basis for other new types of tools.

Key words: ellipsoid end mill, NC machining, three-axis milling, tool design, tool path generation

CLC Number:

TG714

LIU Xianli, FAN Mengchao, JI Wei, WANG Guangyue, ZHAO Zemin. Ellipsoid End Mill Design and Tool Path Generation Algorithm[J]. Journal of Mechanical Engineering, 2018, 54(15): 199-212.

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