DYNAMICS ANALYSIS OF SPECIAL STRUCTURE OF MILLING-HEAD MACHINE TOOL

作者：Yang Qingdong^*; Liu Guoqing; Wang Keshe

来源：Chinese Journal of Mechanical Engineering (english Edition), 2008, 21(6): 103-107.

DOI：10.3901/CJME.2008.06.103

• Milling-head machine tool
• Dynamic characteristics
• Finite element analysis
• Modal synthesis analysis

The milling-head machine toot is a sophisticated and high-quality machine tool of which the spindle system is made up of special multi-element structure. Two special mechanical configurations make the cutting performance of the machine tool decline. One is the milling head spindle supported on two sets of complex bearings. The mechanical dynamic rigidity of milling head structure is researched on designed digital prototype with finite element analysis(FEA) and modal synthesis analysis (MSA) for identifying the weak structures. The other is the ram structure hanging on milling head. The structure is researched to get dynamic performance on cutting at different ram extending positions. The analysis results on spindle and ram are used to improve the mechanical configurations and structure in design. The machine tool is built up with modified structure and gets better dynamic rigidity than it was before.

• 出版日期2008-12