Processingequipment of digit control machine tool

The utility model provides a processingequipment of digit control machine tool, includes the cutter arbor that meets with the main shaft, and with the tool bit that the cutter arbor meets, this tool bit is two angle of throat heads, three angle of throat heads, four angle of throat heads or six angle of throat heads, and minimum department's diameter on the tool bit and general goal diameter ratio are 0.55-0.8: 1. Be provided with the through -hole in the tool bit, this through -hole along the axis setting of tool bit. The head cartridge of cutter arbor is in the main shaft, and the afterbody of cutter arbor is the back taper, and this afterbody meets with the tool bit, the ratio less than or equal to 1.7 of the tip diameter of afterbody and the diameter of tool bit: 1. The ratio less than or equal to 1.5 of the diameter of the diameter of spindle nose and the head of cutter arbor: 1. The tapering less than or equal to 2 degree of the head of cutter arbor. The length and the tool bit of the afterbody of cutter arbor exposes the ratio less than or equal to 2.5 of the length at the position of cutter arbor: 1, perhaps, the tool bit exposes the quadruple of the length less than or equal to tool bit diameter at the position of cutter arbor. The utility model has the characteristics of flexible operation, work efficiency height and long service life.