After the workpiece is clamped once on the horizontal machining center, the digital control system can control the machine tool to actively select and replace the tool according to different processing processes, actively change the spindle speed, feed speed and the motion trajectory of the tool relative to the workpiece and other auxiliary functions, and complete the processing of multiple processes on multiple surfaces of the workpiece in sequence. And there are a variety of tool change or tool selection functions, so that the production efficiency is greatly improved.

Due to the concentration of the process and the active tool change, the machining center reduces the clamping, measurement and machine tool adjustment of the workpiece, so that the cutting time of the machine tool reaches about 80% of the machine tool starting time (ordinary machine tools are only 15~20%); At the same time, it also reduces the workpiece turnover, transfer and storage time between processes, shortens the production cycle, and has obvious economic effects. Machining centers are suitable for small and medium-sized batch production with complex part shapes, high precision requirements and frequent product replacement.