Improving Precision of a Ram-Type Vertical Machining Center Using Finite Element Analysis

To date, the global market for high-productivity machine tools has been dominated by overseas imports, and in most cases, domestic machine tools are also imported. Hence, there is an urgent need to develop domestic production capabilities for materials, parts, and equipment, and to integrate high-speed, high-precision IT technology for technological advancement. In this study, we conduct finite element analysis on a new concept machining center with a column-fixed ram-type head structure in a vertical machining center, which is equipped with an existing C-shaped head. This machine tool features an ATC amp; Magazine that allows equipment to be exchanged and managed from the front, as well as a horizontal centrifugal separation technology that combines a cyclone and centrifuge. This is the first tilting bed structure in the country with an x-axis transfer mechanism and a separate y-and z-axis transfer structure. Using the ANSYS program for finite element analysis, we identify the position where the maximum equivalent stress and deformation of the mechanical part occur because of the load, and present the area where the mechanical part should be reinforced.