Optimizing disc milling column of efficient and powerful compound milling machine tool based on cell structure

We use the finite element method to analyze the dynamic and static characteristics of the disc milling column of an efficient and powerful compound milling machine tool. We extract its three typical cell structures, take into account the disc milling conditions and use the multivariate analysis technique to optimize the shape, size, rib plate and number of the clearance holes of a cell structure The optimization objective is to enhance the disc milling column's natural frequency and stiffness. We use integral mass as the constraint condition to increase its stiffness-to-mass ratio. We then use the three optimal cell structures thus obtained to reconstruct and model the disc milling column. The results on comparing the optimized disc milling column with the non-optimized one show preliminarily that the integral mass of the optimized disc milling column is lower by 11.2%; its first-order natural frequency increase by 28.4%; its stiffness is enhanced (the overall deformation diminishes by 38.5%).