设计了精校机自动送料机构气动系统原理图，并进行了系统的设计计算和气动元件的选择。
Design the principle of the pneumatic system of automatic work-piece carrying mechanism of the precise straightening press.
设计出了机械手的气动系统，绘制了机械手气压系统工作原理图，大大提高了绘图效率和图纸质量。
The paper designs the system of air pressure drive and draws the work principle chart, the manipulator USES PLC to control.
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