Vibration Characteristics Study on Entire Machine Tool Systems

The vibration characteristics of the new vertical machining center 0540d systems were analyzed by means of the combination of vibration testing and finite element modal analysis in this paper.Firstly,the dynamic performance of the new product machine was predicted by controlling modal shapes of machining region and natural frequencies of the system by finite element method.Secondly,compared with calculated data the entire machine tool's modal parameters were tested after installation completely.Then,the finite element model's modal shapes were agreed to the test by comparative analysis,and its frequency errors reached less than 16%.Finally,the finite element model could truly reflect the actual dynamic characteristics of the machine tool,but also could develop new products on dynamic performance prediction analysis.