Spline interpolation with optimal frequency spectrum for vibration avoidance

被引：18
作者：
Sencer, Burak [1 ]
Dumanli, Alper [1 ]
Yamada, Yuki [2 ]
机构：
[1] Oregon State Univ, Corvallis, OR 97331 USA
[2] Keio Univ, Yokohama, Kanagawa, Japan
来源：
CIRP ANNALS-MANUFACTURING TECHNOLOGY | 2018年 / 67卷 / 01期
关键词：
Spline; Vibration; Interpolation; CNC MACHINE-TOOLS; OPTIMIZATION;
D O I：
10.1016/j.cirp.2018.03.002
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A major source of inaccuracy in CNC machines is unwanted vibrations induced by the frequency spectra of reference motion trajectory. This paper presents a novel approach where instead of filtering techniques, axis motion commands are generated with optimal frequency spectra in the first place. Tangential feedrate profile is defined as parametric spline, and its frequency spectrum is optimized with respect to structural dynamics of the machine. The optimization problem is solved efficiently using Quadratic Programming. Experimental results confirm that proposed technique can greatly improve surface finish during machining spline tool-paths without sacrificing from cycle time and contouring performance. (C) 2018 Published by Elsevier Ltd on behalf of CIRP.
引用
收藏
页码：377 / 380
页数：4
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