顶磨式轧辊磨床顶尖接触分析及优化  

Contact Analysis and Optimal Design of Center in Bearing-grinding Roll Grinder

作　　者：杨旭东[1] 黄平[1] 李星渊[1] 曹菡婷 

机构地区：[1]贵州大学机械工程学院,贵州贵阳550025

出　　处：《机械设计与制造》2016年第5期178-181,共4页Machinery Design & Manufacture

基　　金：贵州省科技厅重大专项(黔科合[2011]6017)

摘　　要：针对顶磨式轧辊磨床中顶尖受力变形最大、易破坏磨损等问题,以险峰机床厂正研发的顶磨式重型轧辊磨床顶尖为研究对象,采用仿真接触分析方法,研究顶尖重载下的受力变形规律,结果表明顶尖承受交变应力,接触应力呈扇形分布,得出了应力集中位置和刚度不足之处。根据结果通过反复分析、逐渐逼近对顶尖的薄弱环节进行了形状优化,其应力分布得到了改善,最大变形量降低了48.54%,满足了性能要求。这为研究顶尖的破坏、磨损和结构设计设计提供了理论参考依据。According tothe problem that the center is the largest stress and deformation part and it is easy to damage and wear in the bearing-grinding type roll grinder. Taking the center in a type of heavy-duty roll grinder which is developing at Xian Feng Machine Tool Works as research object,adopting simulation contact analysis method,and the stress regular of center was studied. Analysis results indicates thatthe center is bearing alternating stress,the conical contact stress presents fan-shaped distribution,and the stress concentration and stiffness deficiency position are obtained. Shape optimization design was adopted on center＇s weak link through the repeated analysis andsuccessive approximation. The stress distribution was improved and the maximum deformation was reduced by 48.54%,andmeet the performance requirements. This provides a theoretical reference for studying the center＇s damage and conical surface wear and designing a center.

关 键 词：顶尖 轧辊磨床 接触分析 顶磨式 ABAQUS 有限元 

分 类 号：TH16[机械工程—机械制造及自动化]