On the Calculation Method for the Reliability of Chatter Stability in CNC Milling

doi:10.12068/j.issn.1005-3026.2017.05.014

Abstract

Abstract:

The system parameters in the process of milling generally have randomness， which influences the stability of milling. The neural network was used to make a comprehensive analysis of the effects of random factors in milling， and a method for the reliability analysis of regenerative chatter stability in milling was proposed. A dynamic model for regenerative chatters of milling was established， and the stability lobe diagram was obtained by means of full discretization.The neural network was applied to approximate the functional relationship of the limit axial cutting depth，and the reliability was then calculated with the Monte Carlo method and first order second moment method， respectively. Finally， the results of an example were used to demonstrate the efficiency and accuracy of the proposed method based on the neural network.

Key words: regenerative chatter, milling, stability lobe diagram, neural network, reliability

CLC Number:

TG54

HUANG Xian-zhen， HU Sen， ZHANG Yi-min. On the Calculation Method for the Reliability of Chatter Stability in CNC Milling[J]. Journal of Northeastern University:Natural Science, 2017, 38(5): 675-679.

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