Application of variable teeth pitch face mill as chatter suppression method for non-rigid technological system

International Conference on Mechanical Engineering, Automation and Control Systems 2017

机械制造;无线电电子学;计算机科学

Svinin, V.M.^1 ; Savilov, A.V.^1

Irkutsk National Research Technical University, Lermontov Street 83, Irkutsk

644074, Russia^1

关键词: Angle difference;    Chatter suppression;    Machined surface;    Machining dynamics;    Mill operation;    Technological system;    Variable pitch;    Variation type;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/327/4/042106/pdf
DOI  :  10.1088/1757-899X/327/4/042106

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

The article describes the results of experimental studies on the effects of variation type for variable teeth pitches on low-rigidity workpiece chatter suppression efficiency in a feed direction and in a direction of the normal to the machined surface. Mill operation performance was identified by comparing the amplitudes of dominant chatter harmonics using constant and variable teeth pitches. The following variable pitch formation variants were studied: Alternative, linear rising, and linear rising falling. The angle difference of adjacent teeth pitches ranged from 0 to 10°, from 5 to 8° and from 5 to 10° with interval of 1°. The experiments showed that for all variants, machining dynamics performance resulted from the difference of adjacent pitches corresponding to a half the chatter wavelength along the cutting surface. The alternative nature of a variable teeth pitch is most efficient as it almost completely suppresses the chatters. Theoretical explanations of the results are presented.