Structural design and finite element analysis of a milling machine beam

Abstract

With the rapid development of the modern manufacturing industry, the requirements for milling machine products are getting higher and higher, and then the working accuracy of milling machines has higher requirements. The cross beam of the milling machine is a key component of the milling machine. The cross beam is connected to the top of the machine tool bed by bolts, which mainly play the role of connecting and supporting the saddle and the spindle sleeve. The beam of the milling machine bears most of the working load of the milling machine, so the rigidity and strength of the beam of the milling machine directly affect the working accuracy and service life of the milling machine. In this paper, three dimensional software is used to establish the geometric model of the milling machine beam and establish a finite element model. The stiffness and strength of the saddle are analyzed by the finite element method according to the load condition of the saddle in the middle of the beam. Through analysis, it can be seen that the sliding saddle of the milling machine is in the worst working condition in the middle of the beam. According to the strength theory, it can be checked that its strength meets the requirements. This static analysis can provide reliable data for the design optimization of the milling machine beam.