高速加工工具系统的稳定性及其控制

Stability and Control of Tooling System for High-Speed Machining

高速加工工具系统是高档数控机床的关键部件之一,其稳定性和可靠性直接影响到机床的质量与性能。基于有限元法,建立了高速加工工具系统的三维有限模型,通过模态分析的方法,从固有频率方面研究高速加工工具系统的稳定性,分析了刀具的悬伸量、夹持量、刀柄锥面不同过盈配合下和不同转速的条件下,对高速加工工具系统的固有频率影响,同时分析了刀柄在有端面定位和无端面定位两种不同的定位情况下,对系统的固有频率的影响。提出了改善与提高工具系统稳定性的方法,为开发新型高速加工工具系统提供理论依据。

High-speed machining tool system is one of the key components of high-end CNC machine, and its stability and reliability directly affects the quality and performance of the machine. Based on the finite element method, develops a 3D finite model of high-speed machining tool system, studies on the stability of the high speed machining tool from the natural frequency by the method of modal analysis. Analyzes the amount of the overhang and clamping of the tooling, different shank taper interference fit and under different speed conditions, which affects the natural frequency of high-speed machining tool system. Proposes the approach of improving system stability, which also provides a theoretical basis for the development of new high-speed machining tool system.