Research Of NC Machining Process For Cylinder Cover Of Locomotive Internal Combustion Engine

As engine system's key part, cylinder cover's structure is complex, and the processing is difficult, to a great extent, which decides the production performance and the production cycle. The machining center is one kind of effective production equipment. In order to play its role, these works such as improving the management level, reasonably disposing the personnel and preparing for production and so on, not only would be done, but also the NC machining process must be done well. The cylinder cover's NC machining process and the NC programming are researched deeply in my article.The internal combustion engine cylinder cover is researched in my article. According to the all contents of NC machining process design, the cylinder cover's process is analyzed. Then the cylinder cover's machining process route, the NC processing process as well as the division of work step, the choice of machining center, the cutting tool and fixture are got. There are many holes in the cylinder cover. Connected with three essential factors of the drilling condition and machining center's characteristic, the truth that machine major technique parameters are not constraints for machining center, is discovered in my paper. One simple practical method of drilling condition is proposed through establishing the constraints such as the drill stability, the torque and the machine power and so on. The method may provide reference for the actual production in drilling condition.The processing content, fixture, localization mode, the division of work step and processing method of three main procedures for processing the cylinder cover are emphatically introduced. These three processing processes are milling sides and inlet surface, processing peripheral hole; processing top face, milling exhaust port surface; processing bottom face.In addition, the analysis of the processing and precision is carried out to valve seat and valve guide hole, which includes the structural design based on the ANSYS analysis to the composite boring tool.Based on the Pro/E platform, the research about the NC programming to the cylinder cover is carried out under the Pro/NC environment in my article. In view of the cylinder cover processing technology's characteristic, the method of drilling is mainly applied in processing the outside surface of cylinder cover. Through formulating the datum, creating the path and determining the processing parameters and so on, the NC programming is established, then cutting path and the simulation of machined process are obtained. Finally the NC processing code is obtained through the post-processing.