A structural design method for five-axis gantry machining center based on stiffness matching

摘要

This paper proposes a conceptual design method which is used in the structure design of five-axis gantry machine center. In this method, the main idea is to match the stiffness of the main components of the machining tool. The restrictions are the static stiffness and desired value of the first order natural frequency of the machine tool and the objective function is to get the minimum mass of the machine, respectively. The sub-structure analysis method is employed to analyze the relationship between the basic sizes of the main components and the frequency of the machine tool. According to the relationship and the restriction, the basic sizes of the main components are gained as the basis for the design of the main components of five-axis gantry machining center.