【摘要】 以200MN挤压机为研究对象,针对工作缸卸荷时的压力冲击问题,提出一种基于能量均匀释放原则的卸荷阀阀芯开启曲线。通过理论分析及公式推导,得到利用插装阀进行工作缸卸荷时的阀芯开启曲线,并利用AMES-IM软件对卸荷过程进行仿真,对比不同卸荷曲线的液压冲击情况。仿真结果表明:提出的卸荷曲线能够有效地提高工作缸卸荷过程的平稳性和快速性,对于实际应用具有理论指导意义。更多还原

【Abstract】 The research was based on 200 MN extrusion press.By the problem of hydraulic impact of the working cylinder in the unloading process,a kind of unloading curve based on the principle of energy uniform release was presented.By theoretical analysis and formula deducing,the spool opening curve using cartridge valve in the process of working cylinder unloading was obtained.And by simulation to the unloading process with AMESIM software,hydraulic impact under different unloading curves was contrasted.The results show that the presented curve can effectively make the unloading process stable and fast.更多还原