相似实验方法对机床立柱动力学的研究

Dynamic Performance of the Column of the Machine Tool With Similar Experimental Method

以立式加工中心立柱动力学性能为研究对象,采用相似模型的实验方法,以立柱具有的物理现象为研究内容,推导立柱相似模型遵守的相似法则,确定相似模型研究的各物理量的相似比,完成相似模型的结构设计,进行原模型的模态性能预测,实验结果显示误差小于10%的有70%,误差小于5%的有50%。结果表明大型复杂设备在设计阶段采用相似模型设计方法是经济可行的。

n the design stage, to adopt a similar model experiment to predict dynamic properties of col umn of the machining, according to physical phenomenon of column, derive similar rules that fitted to the column then caculated the Similar ratio of the model. Finally we complete the structural design of sim ilar models, to prediction properties of the original model with the modal, it is about 70% test result that experimental error is less than 10% , about 50% test result that the experimental error is less than 5%. Which illustrates the similarity model design in large and complex equipment is economic and feasible.