摘要
4000t模锻压机在不同工况(工作缸压力变化较大)下,反复调试卸压方式费时费力,所以基本采用一种默认的方式卸压,导致实际操作中卸压冲击振动现象比较明显.为了尽可能保持压机硬件设施不变,采取优化卸压控制方式来达到不同初始卸压压力下都能有较好的卸压效果,基于卸压冲击机理推导出工作缸无冲击的理想卸压曲线,然后利用逆向建模法仿真得出理想卸压曲线下的控制方式,并通过实验对比分析得出以能量正弦释放的卸压方式是最优卸压方式,从而根据同样的方法得出以能量正弦释放的卸压方式在其他初始卸压压力下的控制信号,为工程实践中卸压操作提供了理论指导和参考.
Because repeatedly debugging the unloading way wastes time and energy, using only one fixed unloading way to deal with the 4000t-die-forging press which works under different working conditions, leads to apparently shock vibration. In order to maintain the press＇s hardware and optimize the unloading control mode to get the best unloading effect in different initial unloading pressures, we put forward a way that deduced the shock-free unloading curve based on the mech- anism of pressure relief, then got the voltage control mode through converse modeling and simu- lation. The results show that, the optimal way to release the energy pressure is in the sine way, and in the same way we get the other voltage control mode under different initial pressures when the energy is released in the sine way. This research provides a theoretical guidance for engineering practice and provides a reference for operation in the factory.
出处
《工程设计学报》
CSCD
北大核心
2013年第5期387-392,共6页
Chinese Journal of Engineering Design
基金
国家重点基础研究发展计划(973计划)资助项目(2011CB706800)
关键词
模锻压机
卸压冲击振动
理想卸压曲线
逆向建模法
控制信号
die-forging press
unloading shock vibration
ideal unloading curve
Reverse Model- ing and Simulation
control signal
