Research And Design On System Of TDZ110A CNC Boring And Milling Transforming

The traditional control system of boring and milling machine uses a relay contactor control system, which is not only with wiring complexity, but a failure rate, poor reliability and leads to that the product quality is difficult to be effectively guaranteed. With the development of digital and mechatronics technology, programmable logic controller (PLC) has been widely used in electrical control of various mechanical processing devices. For the digital transformation of the electrical control system of the existing traditional machining equipment, the application of PLC can improve the fuction, efficiency and flexibility of the traditional machining equipment to a new level and moreover, it can also improve product quality effectively, reduce scrap and equipment failure rate, and improve production efficiency.This thesis will, with the background of TDZ110A horizontal boring and milling machine, be based on the digital transformation and design on the traditional control system with the application of S7-200.Based on the analysis on the structure and working principle of boring and milling machine, as well as according to the process requirements, this paper identifies the rehabilitation program of the control system of TDZ110A boring and milling machine. The program takes above slide feed servo system as the object, to establish a mathematical model of the above slide feed servo system to analyze system characteristics, provide servo motor selection, then complete the degign of slide feed control system, and meanwhile, uses Siemens S7-200PLC as the control center for the transformation and design of boring and milling machine control system. It is based on the requirements of system control, performs I /O point design to achieve PLC configuration and network architecture design. To ensure the efficiency of boring and milling machine, but asked not to cause shock and affect the precision of machining equipment, it uses the acceleration and deceleration at the maximum acceleration strategies during the process of start and stop, and calculate the reasonable start acceleration in this system and the terminal velocity at stop. Then, It is based on the functional requirements of the processing equipment, designs the automatically tapping, automatic drilling, automatic cycle milling, hole array processing and other functions. Finally, the program designs HMI corresponding function; using PPI protocol for communication with the free port communication between the network to ensure the reliability of communications between networks.After the actual operation of the system, the effectiveness of this rehabilitation program is verified. The program not just makes the control system of boring and milling machine more advanced and reliable, improves the efficiency, precision and equipment performance, but boosts product quality.