Cnc Shaping Machine Of The Old Rail In Entirety And Control System Design

The rail is the basis of railway equipment, and the performance of rail determines the safety and comfort of the train operation. The rail services online after a period of time, due to wear, which affects the performance, and it can be removed and processed to degrade into a "re-use rail" to continue to use. The shaping machine of the old rail is using to milling the unworn top surface and side of the rail, in order to achieve the purpose of extending the service life of the rail. At present, the shaping equipment of the old rail used in our country is imported in France, which is becoming old and difficult to maintenance, and this thesis is designed the localization shaping machine of the old rail.This thesis uses a PLC control system, which is with Mitsubishi PLC FX3U-128MRTES as the core, and touch screen and inverter to work together, in order to achieve the various functions of the entire machine. Control system consists of hydraulic control system and electric control system, and the main design is hardware and software components of electric control system. Hardware components include the main circuit and control circuit, while the software components contain the procedures of PLC control and the screens of touch screen. Where the software part is the focus of this design, PLC control procedures include procedures for frequency control, servo positioning, feed fixture and the main fixture, while touch-screen screens are made up of a welcome screen, the main interface, the parameter setting screen, the automatically execute screen, the manually adjust screens and alarm screen, etc. Control procedures designed are reasonable and the man-machine screens are friendly, while the choice products of frequency inverter and touch-screen are Mitsubishi, which can be simulated by jointing collaboration with the PLC, debugging the correctness of PLC procedures and the screens of touch-screen.Through designing the entirety and the control system of the shaping machine of the old rail, it can achieve the basic movements and performance of machine tools, for example, accurate servo positioning, reliable hydraulic clamping, precise motor speed, human-computer interaction intuitive and convenient, easy to operate, then workers can control machine movements by console and touch-screen, thereby achieving the milling conditions with high efficiency, high automation, high reliability, from the true meaning of achieving localization shaping machine of the old rail.