关键词: 有限元, 立柱, 增量化设计, 多目标优化

Abstract:

Taking the column of a forming gear grinding machine as the research object, the static characteristics of the column  were analyzed under the partial center of gravity load, meanwhile its modal analysis was completed. And it is found that the column has poor force condition in X direction. On the basis of that, the conception of incremental quantitative design was proposed. Adopting incremental quantitative counterweigh design on the column, the research fruit shows that this method has reduced the column's displacement and stress in X direction effectively, and the fourth order modal of column has appeared vibration shift under this incremental quantitative design. In order to obtain the optimal static stiffness and the smallest increment of the column, a multi-objective optimization model was established on design parameters for column counterweight, and a group of optimal incremental quantitative design parameters are achieved.

Key words: linite element, column, incremental quantitative design, multi-objective optimization