摘 要：數控鉆孔機控制系統是用在孔加工機床上，以可編程序控制器為主控制器，控制鉆頭相對于工件的定位，由一個定位點向另一個定位點的控制系統。該系統由可編程序控制器、步進電機驅動器、步進電機、觸摸屏等構成。PLC是專為工業環境設計的一種工業控制計算機，具有抗干擾能力強、可靠性極強、體積小、編程方便等特點。利用可編程序控制器脈沖輸出指令控制步進電機的轉速、方向和移動距離，從而實現精確定位。觸摸屏可用來顯示機器當前運行狀態，保存配方數據，還可以設置運行參數。所設計的數控鉆孔機控制系統的具有自動控制、手動控制、運行監控、參數設置等功能。
關鍵詞：數控鉆孔；可編程序控制器；步進電機；觸摸屏；定位控制
Abstract：The control system of NC drilling machine which takes the PLC as the main controller is used in drilling machine. It controls the aiguille moving from one positioning to another positioning relative to the positioning of the workpiece. The system consists of PLC, stepper motor driver, stepper motor, HMI, and so on. PLC that designed for the industrial environment specifically is an industrial control computer. It has many advantages, for example, anti-interference capability, high reliability, small size and easy programming and so on. PLC used Pulse Output Function to control the stepper motor speed, direction and distance of movement, accordingly realizing the purpose of exact orientation. HMI can be used to indicate the system’s operating state, to preserv the Filing data, but also can be to set operating parameters. NC drilling machine control system which is designed has automatic control procedures, manual control, operational control, parameter setting, and other functions.
Keywords：NC Drilling；PLC；Stepper Motor；HMI；Position Control
