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工程设计学报
Chinese Journal of Engineering Design  2013, Vol. 20 Issue (5): 387-392    DOI:
    
The pressure relief impacts improvement research of 4000t-die-forging press
 SHEN  Wen-Qi, ZHAN  Li-Hua, HUANG  Ming-Hui, CHEN  Min
The State Key Laboratory of High Performance and Complex Manufacturing, Central South University， Changsha 410083， China
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Abstract  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 mechanism of pressure relief, then got the voltage control mode through converse modeling and simulation. 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.

Key words： die-forging press      unloading shock vibration      ideal unloading curve      Reverse Modeling and Simulation      control signal     
Published: 28 October 2013
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SHEN Wen-Qi
ZHAN Li-Hua
HUANG Ming-Hui
CHEN Min
Cite this article:

SHEN Wen-Qi, ZHAN Li-Hua, HUANG Ming-Hui, CHEN Min. The pressure relief impacts improvement research of 4000t-die-forging press. Chinese Journal of Engineering Design, 2013, 20(5): 387-392.

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https://www.zjujournals.com/gcsjxb/     OR     https://www.zjujournals.com/gcsjxb/Y2013/V20/I5/387


4000t模锻压机卸压冲击改进研究

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．

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 
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