Research on CNC Machining Technology of the Upper Shell of Electro-hydraulic Servo Valve

The CNC machining technology of the upper shell of electro-hydraulic servo valve is complex, and the machining accuracy is required to be high. According to the existing cutting tools and machine tools, the CNC machining process with CNC lathe and 4-axis machining center is designed. First of all, the aluminum alloy blank is roughened and finished on the CNC lathe. After the processing is completed, the two ends of the blank are processed on the CNC lathe, and rough milling, fine milling, drilling and boring processing are carried out with the 4-axis machining center. After the 3D CAD model of the upper shell is constructed, the tool path of rough machining and finish machining is generated by MasterCAM software, and then the G code is generated by the post processor and input to the machining center for machining. The NC machining technology of the upper shell can effectively improve the machining efficiency and accuracy.