Punching cutter

The utility model relates to the technical field of punching tools, in particular to a punching tool. The punching tool comprises a tool body and a material pushing part, the end of the tool body is provided with cutting edges, the tool body is provided with a containing cavity and an opening communicating with the containing cavity, and the cutting edges are distributed on the periphery of the opening; the material pushing part is movably connected with the cutter, can move in the containing cavity in the axis extending direction of the cutter and is used for pushing the remaining materials entering the containing cavity out of the opening. According to the punching cutter, the problem that excess materials punched from a heat-shrinkable sleeve block the cutter can be solved, so that the excess materials can be repeatedly used for next punching, and the punching efficiency is improved. 本实用新型涉及开孔工具技术领域，具体而言，涉及一种冲孔刀具；冲孔刀具包括：刀具和推料件，刀具的端部设置有刀刃，刀具设置有容纳腔和与容纳腔连通的开口，刀刃分布于开口的外周；推料件与刀具活动连接，且能在容纳腔内沿刀具的轴线延伸方向活动，用于将进入容纳腔