Research on Suppression of the Forced Vibration of the Cutter Based on the Milling Dynamics

doi:10.3901/JME.2018.17.094

Abstract

Abstract: Milling is the main method to achieve high speed and high performance metal cutting and its chatter stability, machining accuracy and machining quality have always been a hot research issue. The delayed differential model of a typical two degree of freedom milling system is built, in which the milling force contains static part based on the kinematics of a rigid body and dynamic part based on the regeneration effect. The chatter-free zone of cutting parameters is predicted by the full-discretization method. Under stable cutting conditions, the dynamical cutter tooth path is solved in the frequency domain concerning the interrupted cutting effect. Then the surface location error and the total height of the profile are used to estimate the machining accuracy and machining quality. The experiment basically agrees with theoretical prediction result and it shows that a big depth of cut can be used under resonant spindle speeds, while chatter is more easily to occur in the intermediate area of two neighboring resonant spindle speeds. Chatter can be avoided and the forced vibration can be suppressed by reasonably choosing cutting parameters.

Key words: milling dynamics, chatter, forced vibration, suppression

CLC Number:

TH161

ZHANG Jie, LIU Chengying, ZHENG Feng, YIN Tengfei. Research on Suppression of the Forced Vibration of the Cutter Based on the Milling Dynamics[J]. Journal of Mechanical Engineering, 2018, 54(17): 94-99.

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