XIANG Bing le, CHANG Xin shan, QIN Bao rong, ZHANG Dong dong

 

(1. Key Laboratory of E & M (Zhejiang University of Technology), Ministry of Education & Zhejiang Province,

Hangzhou 310014, China; 

2. Hangzhou Hangji Machine Tool Co., Ltd, Hangzhou 311100, China)

 

 

Abstract: Aiming at high requirement of dynamic characteristics and different performances of the column in different working condition, the dynamic analysis of the column was established. With original data from structure simulation, the structure of column was simplified appropriately based on ANSYS. Contact characteristic of joint part was simulated by 6 node spatial isoparametric finite element. The vibration properties, the deformation of the machine tool was obtained by the modal analysis and dynamic response analysis under the dynamic loads. According to the comparation of dynamic responses of the column in different working conditions, the regular of dynamic response was summarized. The results indicate that inherent frequency will change and dynamic response will enhance with the headstock rising. The max dynamic response occurs near first mode inherent frequency in every working condition. These analyses also confirm the weak stiffness position of the structure and offer some theoretical basis for more reasonable stiffness arrangement of the structure.

 

Key words: crankshaft face machining center; finite element analyze; modal analyze; harmonic response analysis; stiffness