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The function and development history of CNC machining center

The function and development history of CNC machining centerThe function and development history of CNC machining center

Machining Center / (Machining Center /), abbreviated as MC, is a high-efficiency automated machine tool composed of mechanical equipment and numerical control system suitable for processing complex parts. The preparation of processing programs is an important factor in determining the quality of processing. The machining center is a high-efficiency, high-precision CNC machine tool. The workpiece can be processed in multiple procedures in a single clamping. It also has a tool library and automatic tool change. These rich functions of the machining center determine the complexity of machining center programming. Machining center can realize three-axis or more than three-axis linkage control to ensure that the tool performs complex surface processing. In addition to linear interpolation and circular interpolation, the machining center also has various machining fixed cycles, automatic tool radius compensation, automatic tool length compensation, graphical display of the machining process, man-machine dialogue, automatic fault diagnosis, offline programming and other functions .

The machining center is developed from a CNC milling machine. The biggest difference from the CNC milling machine is that the machining center has the ability to automatically exchange machining tools. By installing tools with different uses on the tool magazine, the machining tools on the spindle can be changed by an automatic tool changer in one clamping to achieve a variety of machining Features.

Machining centers can be divided into vertical, horizontal and composite machining centers in appearance. The main axis of the vertical machining center is perpendicular to the worktable, which is mainly suitable for processing plate and shell workpieces, and can also be used for mold processing. The spindle axis of the horizontal machining center is parallel to the table surface. Most of its work tables are CNC rotary tables controlled by servo motors. In a single clamping of the workpiece, the processing of multiple processing surfaces can be realized by the rotation of the table. It is suitable for Box type workpiece processing. The compound machining center mainly refers to that there are two main shafts on the same machining center, and the main shaft can change the angle by 90 °, so it can realize the processing of five faces in one clamping of the workpiece.