Patent ID: 7972545

Claim:
A device for manufacturing an end mill wherein a cutting portion having cutting edges extends at one end portion of an elongated shank portion, comprising: an upper punch and a lower punch configured to move up and down relative to each other and having a lengthwise molding cavity formed thereon; a die having a penetrating slit sized to be approximated to a width of the upper and lower punches and allowing up-and-down movements of the upper and lower punches, wherein a level of a top surface of the die is configured such that a ratio of a height of a portion for forming the shank portion of the end mill to a height of a portion for forming the cutting portion of the end mill within a space formed by a wall of the penetrating slit and the lower punch corresponds to a ratio of a height of the shank portion of the end mill to a height of the cutting portion of the end mill after molding; a feed box configured to supply a powder of material for the end mill into the space formed by the wall of the penetrating slit and the lower punch; and a cleaner configured to remove powder from the top surface of the die.