基于静动态特性的数控带锯床仿真与优化  

Simulation and Optimization on CNC Band Saw Based on Static and Dynamic Characteristics

作　　者：方传传 FANG Chuanchuan(College of Mechanical Engineering,Zhejiang University of Technology,Hangzhou 310014,Chin)

机构地区：[1]浙江工业大学机械工程学院,浙江杭州310014

出　　处：《轻工机械》2018年第2期82-87,共6页Light Industry Machinery

摘　　要：针对某型号带锯床在锯切材料过程中存在着振动较大等问题,对其动静态特性进行仿真研究。通过对该带锯床整机锯架部位的受力平衡分析,确定了双立柱式为该带锯床最合理的布置方式。利用专业有限元分析软件对该带锯床进行了模态以及谐响应分析,得到该带锯床的主要振型以及整机由于激励的作用而造成的响应,据此对该带锯床进行了优化设计。结果表明:该型号带锯床的单立柱结构布局方式需重新设计为双立柱式;该带锯床一阶频率较低,需对其进行优化设计;优化后的带锯床性能优于改进前的带锯床。大部分带锯床均可采用文中针对该型号带锯床的静动态特性进行分析与研究的方法来提高其抗振性能,最终达到提高锯切效率和锯切精度的目的。课题组的研究成果在工程上具有比较高的应用价值。In view of the large vibration problem of the sawing machine when it is sawing materials, the dynamic and static characteristics were studied and analyzed. Based on the analysis of the force balance of the sawing frame parts, the double-column layout was considered as the most reasonable arrangement for the band sawing machine. The modal and harmonic response of the band sawing machine was analyzed by finite element analysis software to figure out the main vibration mode of the band sawing machine and the responsive results which are caused by the incentive function. Accordingly, the optimal design of the band saw was carried out. The results show that the layout of the single-column structure of the band saw should be redesigned as a double-column type. The first frequency of the band sawing machine is relatively low and it should be optimized again. The optimized band sawing performance is better than the improved front band sawing machine. As this method can be used to most of the band sawing machine to improve its anti-vibration performance and finally achieve the purpose of improving its sawing efficiency and accuracy. Therefore, the project has relatively high application value in engineering.

关 键 词：带锯床 静态特性 动态特性 模态分析 结构布局 

分 类 号：TG56[金属学及工艺—金属切削加工及机床]