RESEARCH ON AUTOMATIC MACHINING OF CYLINDER BASED ON IMPROVED PROGRAMMABLE LOGIC CONTROLLER

With the rapid development of traditional mechanical technology, the level of automation in the production and processing of products is also increasing to meet the higher requirements for product quality and performance. In order to solve the problems of low machining efficiency and high product failure rate in the existing automated machining system, this study designs an automated cylinder body machining system that combines a Programmable Logic Controller (PLC) and an industrial computer. The study firstly optimized the machining trajectory of the machine tool in the automatic machining system, and designed a method of controlling the machining trajectory of the CNC machine tool based on PLC and computer technology, and on the basis of which the automatic machining process of the engine cylinder body was designed. The experimental results show that the machining error of the CNC machine tool under PLC control can be controlled within 0.03, and the trajectory control accuracy is between 0.81 and 0.95. In addition, it is found that the longest time taken by the machining system under PLC control is only 1.1 min, which is much lower than other control systems. In conclusion, the automatic production and machining system with PLC control can reach stability faster and the control time is shorter. The automatic machining system designed in this research can effectively improve the machining efficiency of the traditional machining system and provide a new control method for the optimization of automatic machining system.