Commonly used in copper platoon processing machine installation a grating ruler, to replace the traditional positioning block and the photoelectric sensor, its main 'relative motion of the distance by cable to the programmable controller (PLC). According to the grating ruler linear movement of distance and molded parts the mathematical relationship between the bending Angle of PLC programming.

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Copper platoon processing machine

　　當用戶輸入要求折彎的角度，PLC可計算出光柵的理論位移。當折彎油缸動作，帶動光柵尺付尺動作，光柵尺之讀數（即主付尺相對移動之距離）與光柵的理論位移一致時，PLC會命令電磁閥反向動作，折彎油缸返回，完成折彎成型動作。

When the user input requirements of bending Angle, the PLC can calculate the displacement of the theory of grating. When bending cylinder action, lead pay scale grating ruler, the grating ruler reading (i.e., the main pay scale of relative movement distance) consistent with the theory of grating displacement, the PLC will command the electromagnetic valve reverse action, bending cylinder returns, complete bending forming.

　　由此可見，采用PLC加光柵尺構成的閉環控制，銅排加工機只需更改內部程序即可實現不同的折彎角度及折彎生產過程自動化，控制系統具有較高的智能化、柔性化功能，而且相比采用數字控制的折彎機而言，又具有良好的性價比。

Thus, PLC and grating ruler constitute a closed loop control, copper platoon processing machine can be realized only need to change the internal program of bending Angle and bending of the production process automation, control system with high intelligence, flexible function, and compared with adopting digital control bending machine, and has good cost performance.