Processing technique of cold extrusion cutting

The invention relates to a processing technique of cold extrusion cutting, comprising the following steps: arranging a cold extrusion cutting combined cutter on a work table of an oil hydraulic press;installing a hobbing workpiece with tooth thickness remained squeezing quantity of 0.06-0.16 on a mandrel, starting the oil hydraulic press, guiding the workpiece through a guide body of the combinedcutter body, entering a cutting cutter tooth area with the number of cutting cutter teeth of at least 2, and carrying out secondary substratification cutting on the workpiece to remove the total remained squeezing quantity of the workpiece; finally carrying out correction finishing on a correction finishing cutter tooth so as to ensure that the groove width of a curved tooth of the correction finishing cutter tooth is consistent with the minimum curved tooth thickness required by the product technique; and taking out the product subject to the cutting and the finishing processing from an outlet of a positioning sleeve