Patent ID: 9050666
Filing Date: 2015-06-09
Classification: B23C,Y10T

Abstract:
1. An end mill comprising: an end cutting edge provided on a front end of a tool body which rotates around a central axis; a peripheral cutting edge provided on an outer periphery of the tool body; a rake surface of the end cutting edge and the peripheral cutting edge; and at least one recess which locally breaks the continuity of the end cutting edge is provided, wherein a wall section which extends so as to become closer to the outer periphery in relation to the position of the wall section as the wall section nears a rear of the tool body is provided at least in that area of the rake surface which is closer to the outer peripheral side than the recess, and wherein the wall section extends from the recess to reach the outer periphery in a direction between a rear direction parallel to the central axis and an outer peripheral direction perpendicular to the central axis.