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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。
In reconfigurable CNC machining centers, multiple machining execution units need to be configured for the purpose of complete machining, thereby requiring multiple cooling branches to be cooled by one cooling system. Aiming at the influence of flow or pressure fluctuation of one branch on the flow of other branches (usually caused by the decrease of the flow of other branches, the cooling effect is reduced or even burned the execution unit) Automatic control system to detect the pressure and flow of cooling system. Through differential pressure control, the system can independently control the pressure and flow of each branch in the multi-branch cooling system and reduce the pressure and flow fluctuation of one branch to other Coupling influence of branch. The simulation model of the automatic control system was simulated with hydraulic simulation software AM E s im to verify the feasibility of the scheme.