Dynamics Simulation Analysis of Column for NC Bevel Gear Grinder

Abstract:

To avoid the influence of column vibration on machining precision, it is necessary to simulate the stiffness characteristics of the columns for CNC grinding machine, and to optimize the structure of the column by using sensitivity method. Based on structural characteristics of the grinding machine and structural characteristics of the columns, a finite element model is established to simulate and calculate the first-four models of the columns. In order to optimize the structure of the column, a sensitivity analysis is made to calculate the sensitivity of natural frequencies and mass of the column to each panel and ribbed plate. Considering a weighting factor and taking integrated natural frequency of the column as an optimization objective, the mass of the column as a constraint, an optimization equation is established. By a quadratic programming method, the parameter optimization of the column is got as follows: the mass decreased by 4%, integrated natural frequency increased by 2%. Dynamic stiffness of the column has been optimized by harmonic response analysis, the results showed that the largest column in the Z resonance peak reduced by 8.44%.

• Periodical: Key Engineering Materials (Volume 693)
• Pages: 101-108
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.693.101
• Online since: May 2016
• Authors: Yong Wang*, Qing Jian Liu, Wang Tai Yong, Yu Long Wang, Zhi Qiang Yu, Jiang Deng, Jin Hai Huo
• Keywords: CNC Grinding Machine, Dynamic Stiffness, Sensitivity Analysis, Structure Optimization

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