A cutting tool comprising at least one blade arranged at an axial cutting head end of a tool carrier. The tool carrier comprises a chip-removal space that receives material chips removed by the blade. In some embodiments, the blade is adjacent to a chip passage feeding into the chip-removal space, which passage is limited by a radial chip gap partially limited by the blade and from there by a first and second passage surface, the first passage surface a continuation of the chip surface of the blade, the second passage surface running at an angle and widening relative to same, and is closed and limited at least in an axial sub-section facing the cutting head end, all around by a peripheral wall as a third passage surface, wherein at least one coolant channel is formed within the peripheral wall, which is provided to guide coolant to the cutting head end.

The present invention provides a novel groove cutter with chip breaker, comprising: a cutter body; a cutter head arranged at the end part of the cutter body, a cutting edge being arranged at a bordering position of the cutter head; and a chip breaker arranged on the cutter head, wherein the chip breaker comprises a breaker bottom and a breaker wall, the breaker bottom being connected to the cutting edge, the breaker wall being arranged on one side of the breaker bottom away from the cutting edge, the breaker bottom being non-coplanar with the breaker wall, an intersecting line of the breaker bottom and the breaker wall comprising multiple connecting sections, and one curved transition section being arranged between two adjacent connecting sections. By means of the technical solutions provided in the present application, the problem that breaking chips in a groove machining process is difficult in the prior art can be solved.

In an indexable drill, a cutting insert having a cutting edge is detachably mounted on an insert mounting seat of a drill main body. The insert mounting seat has a bottom surface facing a tip side of a drill main body, and a wall surface extending to the tip side and facing a drill rotation direction. The cutting insert has a seating surface seated on the bottom surface toward a rear end side of the drill main body, a contact surface coming into contact with the wall surface toward a side opposite to the drill rotation direction, a projection portion projecting to the side opposite to the drill rotation direction on a tip side of the contact surface, and a mounting hole penetrating the seating surface from a tip flank.

A cutting insert may include a first surface including a corner and a first side, a second surface, a third surface, an inclined surface located between the first surface and the third surface, a first ridgeline located on an intersection of the inclined surface and the first surface, and a second ridgeline located on an intersection of the inclined surface and the third surface. An imaginary straight line passing through a center of the first surface and a center of the second surface may be a central axis. In a cross section which is parallel to the central axis and is orthogonal to the first side, an imaginary straight line connecting the first ridgeline and the second ridge line may be a first straight line, and the inclined surface may include a first inclined surface located more away from the central axis than the first straight line.

An insert based on an aspect includes a first face, a second face located opposite to the first face, a third face located between the first face and the second face, and a cutting edge located on an intersection of the first face and the third face. The first face includes a first region inclined so as be close to the second face as being separated away from the cutting edge. A virtual straight line orthogonal to the cutting edge is set as a first virtual straight line in a front view of the first face. A ten-point average of roughness the first region in a direction along the first virtual straight line is expressed by Rz1a and a ten-point average of roughness of the first region in a direction along the cutting edge is expressed by Rz1b, and Rz1a is larger than Rz1b.

An insert based on an aspect includes a first face, a second face located opposite to the first face, a third face located between the first face and the second face, and a cutting edge located on an intersection of the first face and the third face. The first face includes a first region inclined so as be close to the second face as being separated away from the cutting edge. A virtual straight line orthogonal to the cutting edge is set as a first virtual straight line in a front view of the first face. A ten-point average of roughness the first region in a direction along the first virtual straight line is expressed by Rz1a and a ten-point average of roughness of the first region in a direction along the cutting edge is expressed by Rz1b, and Rz1a is larger than Rz1b.

A cutting tool comprising at least one blade arranged at an axial cutting head end of a tool carrier. The tool carrier comprises a chip-removal space that receives material chips removed by the blade. In some embodiments, the blade is adjacent to a chip passage feeding into the chip-removal space, which passage is limited by a radial chip gap partially limited by the blade and from there by a first and second passage surface, the first passage surface a continuation of the chip surface of the blade, the second passage surface running at an angle and widening relative to same, and is closed and limited at least in an axial sub-section facing the cutting head end, all around by a peripheral wall as a third passage surface, wherein at least one coolant channel is formed within the peripheral wall, which is provided to guide coolant to the cutting head end.

A swiss turning tool assembly includes an insert and a tool holder. The tool holder includes a head portion which in turn includes an insert pocket and a fastener hole opening out to a flank side of the tool and to a pocket opening in the insert pocket. The insert pocket also includes a tool clamping arrangement which in turn includes a tool base surface and at least one tool abutment surface forming an external acute angle with the tool base surface. The insert includes an insert base surface which in turn includes at least one insert abutment surface forming an internal acute angle with the insert base surface. To achieve a clamped position, a single fastener, accessed from the tool's flank side abuts the insert.

A swiss turning tool assembly includes an insert and a tool holder. The tool holder includes a head portion which in turn includes an insert pocket and a fastener hole opening out to a flank side of the tool and to a pocket opening in the insert pocket. The insert pocket also includes a tool clamping arrangement which in turn includes a tool base surface and at least one tool abutment surface forming an external acute angle with the tool base surface. The insert includes an insert base surface which in turn includes at least one insert abutment surface forming an internal acute angle with the insert base surface. To achieve a clamped position, a single fastener, accessed from the tool's flank side abuts the insert.

A cutting tool with through coolant has an elongated shank and a cutting portion. The cutting portion is configured to remove material from a workpiece by cutting. An outer peripheral surface of the shank is configured to be surrounded and tightly held by a hole-wall defined by a tool-fixing hole of a machine tool. At least one coolant-guiding recess is formed in the outer peripheral surface of the shank and extends along a lengthwise direction of the shank. Each coolant-guiding recess forms a coolant channel together with the hole-wall of the tool-fixing hole. An end of the coolant channel is connected to a coolant-supply system. The coolant channel formed by the coolant-guiding recess enables coolant from the coolant-supply system to be jetted toward the cutting portion. The cutting tool provides through coolant without drilled holes, thereby saving cost.