The electrical control of the tool storage system in Dongguan CNC processing plant is mainly to control the operation and position of the shelf. Operation control includes the start-up and braking control of the operating equipment. Position control mainly detects the position and address of the shelf. The control system block diagram is shown in Figure 1.

Figure 1 control system diagram of tool magazine
1) Electrical drive: the mechanical action of horizontal rotary tool storage system belongs to repeated short-term working system. The system needs several speeds in operation, so the transmission system needs speed regulation. Therefore, the system adopts the method of frequency conversion, which can adopt the frequency converter and frequency conversion motor with simple structure and reliable operation.
2) The control mode of Dongguan CNC processing plant: the system is divided into two control modes: manual control and automatic control. Manual control is generally used as debugging and standby working mode; The automatic control mode is an automatic control system composed of the computer (IPC) and control unit (frequency converter, contactor, etc.).
3) Position and positioning accuracy detection: in this system, the approach switch is used as the detection component in the automatic address and position detection. The signal collected by the proximity switch is counted and processed by the optical point isolation relay board and the counting board. The current position of the cargo rack and the destination position of the shelf are determined by the optimal path addressing method. In order to make the positioning of the system more accurate, Dongguan CNC factory adopts two photoelectric switches to detect two detection pieces of two shelves respectively.