Modal Analysis and Experimental Research for Heavy Load Deflection Angle Milling Head
CAI Li-gang; MA Shi-ming; ZHAO Yong-sheng; LIU Zhi-feng; GUO Tie-neng
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State Engineering Center of Precision and Ultra-precision Machining, Beijing University of Technology, Beijing, 100124
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History+
Received
Revised
Published
2010-02-01
2010-04-27
2011-07-25
Issue Date
2011-07-25
Abstract
The heavy load deflection angle milling head is an important functional component of 5-axis linkage CNC machine tool, which is used for processing large and complex free-form surface. The characteristics of this kind of milling head are implementing multiple degrees of freedom motion with revolution and deflection angle simultaneously, owning compact structure, heavy load and high stiffness. Mastering the relationship between modal characteristics of milling head and its influence factors is a pre-requisite solving problem for the development and research of heavy load deflection angle milling head independently. Therefore, an integrated research method which combines experiment validation and theoretical analysis with many constraint styles is introduced. In theoretical analysis aspect, modal analysis and comparison of milling head with appending and practical working state two constraint styles are carried through, which validate the correctness of theoretical analysis of the two constraint styles. In experimental research aspect, modal experimental research is carried through with free support for box, and initial fixing for the whole milling head. Experimental and theoretical analysis results are compared and analyzed. Therefore, exact modal characteristics of milling head and unsubstantial segments and its influence factors are gotten, which provide theoretical and experimental support for structure optimization and improving of heavy load deflection angle milling head.
CAI Li-gang;MA Shi-ming;ZHAO Yong-sheng;LIU Zhi-feng;GUO Tie-neng.
Modal Analysis and Experimental Research for Heavy Load Deflection Angle Milling Head [J]. Journal of Vibration and Shock, 2011, 30(7): 250-255
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