2800七辊厚板矫直机压下螺母应力分析及参数确定  

Stress Analysis and Parameters of 2800 Seven Roller Plate Straightening Machine Screwdown Nut

作　　者：崔广健 孙登月[1] 

机构地区：[1]燕山大学国家冷轧板带装备及工艺工程技术研究中心,河北秦皇岛066004

出　　处：《机械设计与制造》2016年第1期119-121,125,共4页Machinery Design & Manufacture

基　　金：河北省自然科学基金(E2012203008)

摘　　要：压下螺纹副是电动压下装置的核心部件,其规格参数不仅决定螺母自身的大小,更会影响机架的总体尺寸。采用Abaqus有限元模拟的方法对不同规格的压下螺丝螺母模型进行有限元分析。研究螺母在矫直机工作时,各螺牙齿根处应力大小的分布以及螺母的最大应力。发现当螺母高度达到一定值后,增加高度对于减小最大应力影响不大。通过比较不同规格尺寸的螺母应力,选取合适的规格参数,以减小螺母高度,并且进一步修正螺母高度与外径的经验公式。这对降低设备高度和相关设备的压下装置设计具有指导意义。The pressure screw pairs are the core components of the electric screwdown,and the specification not only decides the size of the nutitself,but also will affect the overall size of the rack. Using Abaqus method of finite element simulation finite element it analyzes the model of screw nuts of different specifications of under pressure. In the straightening machine work,it studies the screw tooth root stress distribution and maximum stress of the nut. It finds that when the nut height reaches a certain value,increasing the height to reduce the maximum stress has little effect. By comparing the different sizes of nut stress,selecting the appropriate parameters to reduce the height of nut,and the empirical formula is further modified of nut height and diameter. There is a guiding significance for the design of the device to reduce the height of the equipment and related equipment under pressure.

关 键 词：螺纹副 有限元法 齿根处应力 螺母 

分 类 号：TH16[机械工程—机械制造及自动化]