大型水平下调式三辊卷板机结构分析与改进

发布时间：2018-10-17 13:30

【摘要】：随着我国制造业水平的不断上升,航空航天、压力容器、工程机械及造船等行业对特厚板、高强度板和复合板的需求越来越大,因此对卷板机的卷制能力、卷制精度的要求也在不断提高。随着卷板工艺的日趋成熟,对卷板机结构的分析也越来越受到人们重视。国内对此类大型卷板机结构的分析研究还很少,本文的研究填补了这个空白。本人基于长锻所生产研发的微控式大型水平下调式三辊卷板机,根据长锻公司提供的参数,对卷板机各受力部件进行受力分析,通过三维软件Proe-Engineer对其结构进行三维建模、结构简化,利用Workbench有限元分析软件对卷板机整机进行静力分析,并对高机架进行模态分析,通过改进机架结构提高其动态特性,最后对中央平台部分进行振动时效的有限元模拟实验来消除焊接残余应力。通过本文的分析与研究:该卷板机在结构设计上存在一定问题,通过对其结构的合理改进可以解决弯矩过大产生的应力集中问题;高机架作为对卷板精度影响较大的部分,可以通过改进其结构组成提高其动态特性,减小振动对其影响;焊接残余应力的产生不可避免,振动时效方法能够有效消除残余应力,此方法对于卷板机机身平台是适用的。
[Abstract]:With the rising level of manufacturing industry in China, the demand for extra thick plate, high strength plate and composite plate in aerospace, pressure vessel, construction machinery and shipbuilding industries is increasing. The requirement of precision of crimping is also increasing. With the maturation of the coiling process, more and more attention has been paid to the analysis of the structure of the coiling machine. There are few researches on the structure of this kind of large-scale sheet-rolling machine in China, and the research in this paper fills up this gap. Based on the micro-control three-roll rolling machine developed by the long forging Institute, according to the parameters provided by the long forging Company, this paper analyzes the force on the mechanical parts of the rolling machine, and models its structure through the three-dimensional software Proe-Engineer. The structure is simplified, the static analysis of the whole machine is carried out by using Workbench finite element analysis software, and the modal analysis of the high frame is carried out, which improves the dynamic characteristics of the frame by improving the structure of the frame. Finally, finite element simulation experiments of vibration aging are carried out on the central platform to eliminate welding residual stress. Through the analysis and research in this paper: there are some problems in the structural design of the machine, the stress concentration problem caused by the excessive bending moment can be solved by the reasonable improvement of the structure, and the high stand is the part which has a great influence on the precision of the reel plate. The dynamic characteristics can be improved by improving its structure composition and the influence of vibration on it can be reduced. The welding residual stress is inevitable and the vibration aging method can effectively eliminate the residual stress. This method is applicable to the plate winder fuselage platform.
【学位授予单位】：太原科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TG333.24

【相似文献】