Cutting knife for electrode tip grinding device and electrode tip grinding device with cutting knife

The utility model belongs to the technical field of grinding. The utility model relates to a cutter, in particular to a cutter for an electrode tip grinding device and the electrode tip grinding device with the cutter. A plurality of arc cutters distributed at the circumferential positions of the rotating axis of a cutter mounting base are arranged on the cutter mounting base at intervals; the gaps between the arc cutters form the chip removal openings used for discharging the die repairing chips, the multiple chip removal openings can conveniently discharge the chips generated in the grindingprocess in time, then the relatively open chip removal openings are formed in the grinding process of the arc cutters and the corresponding electrode tips, and interference of the chips on the electrode tips is avoided. 本实用新型属于修磨技术领域，尤其涉及一种电极头修磨器用切削刀及具有其的电极头修磨器，通过在刀具安装座上间隔设置有多个分布在刀具安装座旋转轴线的周向位置处的圆弧刀具，圆弧刀具之间的间隙形成用于排出修模碎屑的排屑口，多个排屑口能够便于将在修磨过程中产生的碎屑及时排出，进而在圆弧刀具与相应的电极头修磨过程中形成相对较为开放的排屑口，避免碎屑对电极头造成干扰。