摘要
压下螺纹副是高负荷中厚板轧机大行程辊缝调节所必需的组成装置之一,其中重量大、造价高且刚度较小的的压下螺母,由于承受大冲击载荷而成为易损零件。基于ANSYS有限元计算平台,建立了轧机压下螺纹副的1/2三维实体模型;对承受轴向载荷的压下螺纹副进行三维有限元数值计算,得到并分析了轧机压下螺母的轴向载荷分布特性。并分别计算得出了轧机压下螺母的牙厚比、基体厚度、螺牙承载面倾斜角及摩擦系数对压下螺母螺牙根部的等效应力分布的影响。为轧机压下螺纹副的优化设计,提高压下螺母的使用寿命提供了参考依据。
The rolling mill down screw-pairs is a key component of high load plate mill and was used for regulating the roll gap of a large stroke. The down nut of larger weight, high cost and less stiffness which bear large impact load is vulnerable part. Based on finite element analysis software ANSYS, 1/2 three-dimensional entity model of the rolling mill down screw-pairs has been established. Through three-dimensional finite element numerical computation of the mill rolling down screw-pairs which bear the axial load, the axial load distribution characteristic of the rolling mill down nut has been analyzed. And the effect of the rolling mill down nut thickness ratio, matrix thickness, inclination angle of bearing surface of screw tooth and friction coefficient on yon mises stress distribution of tooth root of the mill down nut have been respectively calculated. This will provide reference to optimization of rolling mill down screw-pairs design and improvement of the service life of the down nut.
出处
《机械设计与制造》
北大核心
2015年第3期225-228,共4页
Machinery Design & Manufacture
基金
山西省自然科学基金(2014011025)
太原科技大学博士启动基金(20092013)
关键词
压下装置
螺纹副
载荷分布
有限元分析
Screw Down System
Screw-Pairs
Load Distribution
Finite Element Analysis
