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针对上推式快锻液压机工作缸柱塞与活动横梁连接球铰转动自锁条件的理论分析,采用机械系统动力学分析软件ADAMS对其进行仿真验证,明确工作缸连接球铰自锁条件的准确性。基于球铰转动自锁条件,根据工作缸实际受力情况,提出一种工作缸分析模型,运用有限元软件ANSYS对不同锻造偏心距下的工作缸进行静力分析,结果表明,在一定的锻造偏心距范围内压机工作缸球铰结构存在自锁,且随着偏心距的增大,缸体和导套最大应力逐渐增大。通过分析偏载工况下球铰自锁条件对压机工作缸的影响,提出对上推式快锻液压机偏心锻造问题进行研究时,有必要考虑球铰的转动自锁条件。
Aiming at the theoretic analysis of self-locking condition of ball joint of up-push fast forging hydraulic cylinder and movable beam, the mechanical system dynamics analysis software ADAMS is used to verify the condition and the accuracy of self-locking condition of ball joint ball joint Sex. Based on the self-locking condition of ball joint rotation, a working cylinder analysis model is proposed according to the actual force of the working cylinder. Static analysis of the working cylinder under different forging eccentricity is carried out by finite element software ANSYS. The results show that, There is self-locking in the ball cylinder hinge structure of the press in the range of eccentricity, and as the eccentricity increases, the maximum stress of the cylinder block and the guide sleeve gradually increases. By analyzing the influence of ball joints’ self-locking condition on the working cylinder under partial load conditions, it is necessary to consider the rotating self-locking condition of the ball joints when studying the eccentric forging of the push-up fast forging hydraulic machine.