The machining center, abbreviated as cnc, is a high-efficiency automated machine tool composed of mechanical equipment and a numerical control system for processing complex-shaped workpieces. The machining center is also called a computer gong. The machining center is equipped with a tool magazine and has an automatic tool change function. It is a CNC machine tool that performs multi-process machining after clamping the workpiece at one time. The machining center is a highly mechanical and electrical integration product. After the workpiece is clamped, the CNC system can control the machine tool to automatically select, change the tool, automatically set the tool, automatically change the spindle speed, feed, etc. according to different processes. Milling, reaming, tapping and other processes, which greatly reduces the time for auxiliary processes such as workpiece clamping time, measurement and machine tool adjustment. It has more complicated processing shapes, higher precision requirements, and frequent replacement of parts. .