Fast Detection of Chatter in End-Milling Using Pseudo Auto-Correlation Function
Author(s) -
Kenji SHIMANA,
Eiji Kondo,
Hiroko Karashima,
Norio KAWAGOISHI
Publication year - 2012
Publication title -
international journal of automation technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.513
H-Index - 18
eISSN - 1883-8022
pISSN - 1881-7629
DOI - 10.20965/ijat.2012.p0728
Subject(s) - vibration , reliability (semiconductor) , fast fourier transform , reduction (mathematics) , end milling , constant (computer programming) , machine tool , function (biology) , tool wear , structural engineering , mathematics , engineering , machining , computer science , algorithm , acoustics , mechanical engineering , geometry , physics , power (physics) , quantum mechanics , evolutionary biology , biology , programming language
The chatter vibrations cause problems, such as the reduction of tool life, tool fracture, and a deterioration in the quality of the machined surface. This paper presents a fast detection method for expected chatter in high-speed end-milling. In this study, a pseudo auto-correlation function is applied to tool vibration data sampled at intervals as the spindle rotated at a constant angle. The calculation time for the pseudo auto-correlation function is expected to be shorter than that of the FFT method. As a result, it was indicated that detection reliability under the proposed method was approximately equal to the detection reliability by the previous methods by using tool vibration data sampled at constant intervals of time.
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