| 主权项 |
1. A blade positioning structure of a disposable milling cutter, the disposable milling cutter comprising a cutter body and a disposable blade, wherein the cutter body has an outer periphery provided with a blade seat, the blade seat extends transversely through the cutter body and has a threaded hole, and the disposable blade is penetrated by a screw hole so that, by passing a screw through the screw hole and the threaded hole, the disposable blade is locked to the blade seat;
wherein the blade seat has a blade seat surface and a sidewall, the blade seat surface being provided with at least one groove; wherein the disposable blade has a bottom surface provided with at least one projection, the projection corresponding in shape to the groove in the blade seat surface; and wherein the blade seat surface and the groove of the blade seat lie respectively and tightly against the bottom surface and the projection of the disposable blade when the disposable blade is locked to the blade seat. |
