The Simplication Algorithm and Characteristic Analysis of Variable Cross-Section Beam of Machining Center

Abstract:

According to the spatial arbitrary cross-section beam simplification redundancy and coupled problem of model constraint mutually relation, for the variable cross-section beam of 5-axis gantry machine tools, a new beam simplification algorithm and the average second inertia concept is created by structural mechanics theory. Under gravity and cutting load of beam, It applied simplification algorithm and finite element analysis software (Nastran) to study the static and dynamic characteristic comparatively, deformation relative errors are less than 5%. The modal analysis of beams get the order natural frequency and vibration mode, contrast analysis with experimental value, the relative errors are less than 9% each other. Through theoretical analysis and experimental data shows that the simplification algorithm is practicability and accuracy, it play a role in the key components of machine tools analytical characteristics and machine tools of performance prediction.

• Periodical: Applied Mechanics and Materials (Volume 319)
• Pages: 356-361
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.319.356
• Online since: May 2013
• Authors: Xiao Peng Yao, Guo Fu Yin, Hui Fang
• Keywords: 5-Axis Gantry Machine Tools, Static Stiffness, Variable Cross-Section Beam

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