摘要
本文针对某型液压摆式剪板机主油缸活塞杆磨损破坏造成液压油的泄漏问题,应用有限元法,将空间三维模型简化为平面应力问题,大大提高了求解的效率和计算的精度。通过对液压缸活塞杆侧推力的有限元分析,得出了活塞杆破坏的位置和侧推力的变化规律。计算表明,减小球头关节和刀架斜垫板接触面的摩擦系数,能降低活塞杆的磨损,利用程序内嵌优化设计模块对刀架处于上极限位置球头关节被卡死的最小摩擦系数进行了求解,得出结论为:该位置上球头关节被卡死的最小摩擦系数为0.17。
In the text, the finite element method has been applied to solve the leakage of the hydraulic oil which is caused by the wear-out failure of the main cylinder connecting rod for some hydraulic swing beam shear.The three-dimensional problem has been simplified into a plane stress problem, which greatly increases the efficiency and accuracy of the solution. The position where the connecting rod was wrecked and changing rule of the lateral thrust have been obtained on the basis of FEM analysis. The calculation results show that the reduction of the friction coefficient of the contact surface between the ball joints and the cutter saddle oblique plate can reduce the wear and tear of the connecting rod effectively. The procedure embedded optimum design module has been used to obtain the minimum friction coefficient when the ball joint is stuck that can＇t be moved at the position where the cutter saddle is on the upper limit location,and it is concluded that the minimum friction coefficient is 0.17 when the ball joint is stuck.
出处
《锻压装备与制造技术》
2009年第5期73-76,共4页
China Metalforming Equipment & Manufacturing Technology
关键词
机械制造
主油缸活塞杆失效
剪板机
有限元法分析
Failure of piston rod in main cylinder
Shear machine
Finite Element Analysis
