随着对切削速度和加工精度要求的不断提高,机床动刚度的研究愈来愈显得重要。由于机床大件结构上的变截面、加强筋以及开口等原因,其动刚度的计算是十分复杂和困难的。而在机床设计阶段,就需要能从设计图纸预计机床的抗振性能。因此模型实验技术便成为研究机床动刚度的一种重要 With the continuous improvement of the cutting speed and machining accuracy, the research on the dynamic stiffness of the machine tool is more and more important. Due to the large structure of the machine variable cross-section, ribs and openings and other reasons, the calculation of dynamic stiffness is very complicated and difficult. In the machine design stage, we need to be able to predict the anti-vibration performance of machine tools from the design drawings. Therefore, the model experiment technique has become an important research tool dynamic stiffness