机床典型结合部参数优化识别

The Parameter Recognition and Optimization of Machine Tool's Typical Combination

机床是结构相对较为复杂的工作母机,由许多零部件组装而成,存在着多个"结合部"。据有关文献报道,零件结合面之间刚度和阻尼在很大程度上影响到机床结构总刚度和总阻尼。因此在对机床进行整机动态特性分析研究时,必须考虑结合部问题。目前关于机床零部件之间结合面参数的获取方法各不相同,但对于这种属于"非线性问题"的方法还在不断的探索和完善中,文中提出了一种新的理论解析分析与试验研究相结合的方法,有限地获取了机床结合部的参数,并将该方法用于实际机床的开发设计中,开发的机床已投入实际使用,经动态模拟分析机床整机具有良好的动态特性。

Machine tools have relatively complex structure,which are assembled with many parts,so there are joint surfaces among parts. The literatures reported that the stiffness and damping between joint surfaces to a great extent,affect the total stiffness and damping of the machine tool structure when the dynamic characteristics of the machine tools is analysed and studied,integration issues must be considered the combination of machine tool parts between surface parameter acquisition method each are not identical,but for this belongs to the nonlinear problem is still in continuously explore and perfect. This paper proposes a new method which combines the theoretical analysis and experimental research together,in order to obtain the limited parameters of the joint surfaces of machine tool. This method has been used for the actual machine tool in development and design. The developed machine tool is put into operation. The dynamic simulation analysis of the whole machine tool has a good dynamic characteristics.