Abstract: A head replaceable cutting tool having a structure that can limit a machining cost when a clearance portion is formed in a portion at which a head is attached and detached, and also limit deformation of a shank is provided. The head replaceable cutting tool includes: a projection portion or a hole portion for attachment and detachment disposed in a head; a shank to which the head is attachable; a hole portion, to which the projection portion is removably attachable along a central axis, or a projection portion disposed in an end portion of the shank; a fastening member that presses the projection portion toward an inner circumference surface of the hole portion; and a fastened portion disposed in the shank to fasten the fastening member.

Abstract: To provide a cutting insert such that a tool body can sufficiently hold the cutting insert even if one of cutting parts is broken. The cutting insert includes two side surfaces opposed to each other, a fixing hole passing through the centers of the two side surfaces, and an outer circumferential surface that is disposed between the outer circumferential edges of the two side surfaces and are connected to the outer circumferential edges of the two side surfaces. The outer circumferential surface includes four cutting parts, a first outer circumferential surface part that is disposed between the first cutting part and the second cutting part, and a second outer circumferential surface part that is opposed to the first outer circumferential surface part and is disposed between the third cutting part and the fourth cutting part.

Abstract: A purpose is to provide a cartridge that can adjust position even if a body does not have an adjusting mechanism. A cartridge 10 is provided on a body B of a milling tool. The cartridge 10 is connected to an upper surface 10a, a lower surface 10b, and a first side surface 10c, and a slit 10h that divides the cartridge 10 into a main body part 10j, a thin material portion 10k, and a connecting part 10m that connects the main body part and the thin material portion is formed in the cartridge. Furthermore, a screw hole 10n with second female threads is formed in order for a second male screw that passes through the slit 10h to screw into. Furthermore, wherein the second male screw travels forward, the relative position of the main body part 10j changes with regard to the thin material portion 10k.

Abstract: A purpose is to provide a cartridge that can adjust position even if a body does not have an adjusting mechanism. A cartridge 10 is provided on a body B of a milling tool. The cartridge 10 is connected to an upper surface 10a, a lower surface 10b, and a first side surface 10c, and a slit 10h that divides the cartridge 10 into a main body part 10j, a thin material portion 10k, and a connecting part 10m that connects the main body part and the thin material portion is formed in the cartridge. Furthermore, a screw hole 10n with second female threads is formed in order for a second male screw that passes through the slit 10h to screw into. Furthermore, wherein the second male screw travels forward, the relative position of the main body part 10j changes with regard to the thin material portion 10k.

Abstract: A cutting insert mounted on a rotating tool including a body that rotates about a predetermined rotational axis. The cutting insert includes an upper surface, a lower surface and a peripheral side surface. The cutting insert further includes an inner cutting edge and a corner cutting edge. A top part, which has the maximum distance from the lower surface, is located on the corner cutting edge.

Abstract: The present invention provides a cutting insert 10 which is mounted on an indexable rotating tool E comprising a body B that rotates about a predetermined rotational axis AX. The cutting insert 10 comprises an upper surface 10a, a lower surface 10b and a peripheral side surface. The cutting insert 10 further comprises an inner cutting edge 10g and a corner cutting edge 10f. A top part S, which has the maximum distance from the lower surface 10b, is located on the corner cutting edge 10f.