可重配置的机床液压冷却系统的解耦控制

可重配置的数控加工中心中,为实现完整性加工的目的,需要配置多个加工执行单元,由此需要由一个冷却系统对多个冷却支路进行冷却。针对某一支路的流量或压力波动对其他支路的流量所造成的影响(通常造成其他支路的流量减小,冷却效果下降,甚至烧毁执行单元),根据流体理论设计了一套能够自动检测冷却系统压力和流量的自动控制系统,通过压差控制的方法该系统可以实现多支路冷却系统中每一条支路压力和流量的独立控制,降低某一条支路的压力和流量波动对其他支路的耦合影响。用液压仿真软件AM E s im对所建立的自动控制系统模型进行仿真,验证该方案的可行性。

Decoupled control of hydraulic cooling systems in reconfigurable machine tools

Integral machining in reconfigurable numerical control machine tools requires that parts of the machine can be reconfigured,so several cooling loops need to be built into the cooling system.The flow rates and pressures in each loop will fluctuate as other loops fluctuate which often reduces the cooling and damages the machine.A autocontrol system to detect each loop's pressure and flow rate was designed to adjust the pressure differences between loops to control the flow rate and pressure in each loop to remove the coupling between loops.Simulations with hydro-simulation software AMEsim validated the feasibility of the system.