内圆磨床床身设计参数的灵敏度分析及动态设计

Sensitivity Analysis and Dynamic Design of Design Parameters for Internal Grinder Bed

机床床身在固有频率下的动态特性 ,对机床的加工精度有很大的影响。本文通过对组成框架型内圆磨床床身和双 W型内圆磨床床身的主要肋板的厚度、位置等设计参数的灵敏度分析 ,找出了对该类型机床床身结构动态特性影响较大的设计参数 ,使磨床床身的设计既能保证有较好的结构动态特性 ,又能达到使其重量最轻的目的。

The dynamic performance of machine tool in natural frequencies has a great effect on machining precision. The sensitivity analysis between performance of the machine tool and design parameters shows that design parameters affecting the dynamic performance of the bed, can be determined which are the most senstive. A satisfactory result for designing the optimum performance machine tool bed is obtaned. This paper also analyzes the parameters of design sensitivity including the thickness and positions of the major ribs for internal grinder beds with the two kinds of ribs. The parameters ensure the ideal dynamic performance of the grinder bed design, and make the grinder bed light in weight.