闭式高速压力机的隔振研究

Research on Vibration Isolation for Closed High Speed Press

根据曲柄压力机结构特点,建立了含曲柄滑块机构的压力机动力学模型;并根据冲裁冲击作用的瞬态性特点,进一步将其简化,建立了闭式高速压力机的两自由度振动模型。通过对典型工况下的载荷特性分析,构造了载荷简化的标准表达式。在此基础上进行了计算机仿真,计算结果与两种减振橡胶支撑情况下实际测量所得到的压力机振动波形一致,验证了模型的正确性。同时,研究了不同减振隔离刚度、阻尼情况下的冲击力传递到基础比值的变化情况。

Punching machines can generate structure - borne impact noise, which severely affects the environments nearby. For lessen the problem, a dynamic model of the 0 - frame crank - slider press machine was introduced. And it was even simplified to a two DOFs spring - mass - damp system with only considering the punching process. For easy calculation and analysis, the force curves of three typical processes （hammer, punching and drawing） were formulized. Computer simulations were conducted and the resulted vibration performances were almost the same as that measured from field experiment. The force transmission ratios from the machine to the base were portrayed vs varies constants of isolator spring and damper. It was showed that new techniques should be developed to eliminate the shocks and noises in punching processes not only depending on isolators.