Research on Modeling Method of Machining Stability in Five-axis Ball End Milling Based on Enhanced Complete Discretization Method

doi:10.3901/JME.2019.23.189

Abstract

Abstract: The cutter-workpiece engagement in five ball-end milling is extracted by the idea of coordinate transformation at first. Then, the enhanced complete discretization method is applied to solve differential dynamic equation with taking efficiency and precision into consideration synchronously. On basis of ball-end mill in the single tooth cycle being regarded as arc cutting, the instantaneous cut off angles needed in numerical solution are determined via the relationship between cutter edge and contact area at different time. The predictive stability lobe diagram (SLD) is established by Floquet theory, which is validated in a five axis NC machine tool with good accordant with predicted results.

Key words: chatter, five ball-end milling, cutter-workpiece engagement, enhanced complete discrete method

CLC Number:

TG113

DAI Yuebang, LI Hongkun, ZHOU Qiang, LIU Shengxian. Research on Modeling Method of Machining Stability in Five-axis Ball End Milling Based on Enhanced Complete Discretization Method[J]. Journal of Mechanical Engineering, 2019, 55(23): 189-199.

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