An insert configured to be assembled to a tool for cutting a workpiece, includes: an upper surface including first to fourth upper corner portions formed in respective quadrants divided by a first imaginary vertical axis and a first imaginary horizontal axis that are perpendicular to each other; and a lower surface formed below the upper surface in a height direction and including first to fourth lower corner portions formed in respective quadrants divided by a second imaginary vertical axis and a second imaginary horizontal axis that are perpendicular to each other. A lower ridge portion protruding downward in the height direction is formed on the lower surface, and extends across the second and fourth lower corner portions, which are symmetrical with respect to a center of the lower surface

A cutting body rotatable about a tool axis has an insert receiving pocket with a seat surface at an axial forward end thereof. The seat surface has a plurality of abutment elements, including an axial abutment element having an axially forward facing abutment surface and at least one radial abutment element. In a top view of the insert receiving pocket, the axially forward facing abutment surface forms an external acute clamping angle with a radially outward facing pocket wall. A rotary cutting tool includes the cutting body, and a cutting insert removably secured in the insert receiving pocket, having a base surface in contact with the seat surface. The at least one radial abutment element occupies or is occupied by at least one radial abutting element of the base surface, and the axially forward facing abutment surface is in contact with an axial abutting surface of the base surface.

An integral cutting tool configured for revolving about a central axis is provided. The cutting tool is formed with at least one cutting portion having a rake surface, a relief surface, and a cutting edge formed at the intersection between the rake surface and the relief surface. The cutting tool is further provided with a cooling fluid provision arrangement having at least one passage, and a cooling aperture formed at the relief surface. The cooling aperture is directed towards the cutting edge at an acute angle.

A cutting insert has: an upper surface; a lower surface; a side surface, having a first surface and a second surface disposed opposite each other between the upper surface and the lower surface; and a first cutting edge. The lower surface has a plurality of slots extending from a side of the first surface to a side of the second surface. In addition, when viewed from a side of the lower surface, if the angle between a ridge line on which the upper surface and the first surface intersect and an imaginary extension line of the plurality of slots is defined as 1, and the angle between a ridge line on which the lower surface and the first surface intersect and the imaginary extension line is defined as 2, then 2>1.

A rotary cutting tool having a disk-shaped cutting body with a plurality of identical insert receiving pockets, and an equal number of indexable cutting inserts removably retained therein, having opposing upper and lower surfaces and opposing first and second insert end surfaces. First and second cutting edges are formed at the intersection of the upper surface and the first and second insert end surfaces, respectively. Circumferentially adjacent cutting inserts have a different one of their first and second insert end surfaces in contact with an insert receiving pocket back wall. First and second planes are equidistantly offset from opposite sides of the cutting body, the first plane only intersecting the first cutting edge of every circumferentially alternate cutting insert and none of the second cutting edges, and the second plane only intersecting the second cutting edge of every circumferentially alternate cutting insert and none of the first cutting edges.

An insert configured to be assembled to a tool for cutting a workpiece, includes: an upper surface including first to fourth upper corner portions formed in respective quadrants divided by a first imaginary vertical axis and a first imaginary horizontal axis that are perpendicular to each other; and a lower surface formed below the upper surface in a height direction and including first to fourth lower corner portions formed in respective quadrants divided by a second imaginary vertical axis and a second imaginary horizontal axis that are perpendicular to each other. A lower ridge portion protruding downward in the height direction is formed on the lower surface, and extends across the second and fourth lower corner portions, which are symmetrical with respect to a center of the lower surface.

A cutting tool has a cutting body with a first insert pocket and an indexable cutting insert removably mounted therein. The first insert pocket has a first seat surface with a plurality of first engagement elements and a first support wall transverse thereto. The cutting insert has upper and lower surfaces and a boundary surface extending therebetween. The lower surface has a plurality of lower engaging elements and the boundary surface has a plurality of alternating first and second peripheral surfaces intersecting the upper surface to form first and second upper cutting edges. In each index position with the lower surface in contact with the first seat surface, the first support wall prevents translation of the cutting insert in a first direction, and the first engagement elements eccentrically contact the lower engaging elements to prevent translation of the cutting insert in a second direction perpendicular to the first direction.

A round cutting insert has a seating surface with a plurality of projections formed on the seating surface proximate a central opening. The projections do not extend to an outer perimeter of the seating surface such that the outer perimeter is continuous and uninterrupted a full 360 degrees. An insert-receiving pocket includes a seating surface with a plurality of dimples for receiving the plurality of projections to prevent rotation of the cutting insert when mounted in the insert-receiving pocket. The plurality of dimples do not extend to an outer perimeter of the seating surface such that the outer perimeter is continuous and uninterrupted a full 360 degrees, thereby maximizing contact between the cutting insert and the pocket.

A cutting tool has a cutting body with a first insert pocket and an indexable cutting insert removably mounted therein. The first insert pocket has a first seat surface with a plurality of first engagement elements and a first support wall transverse thereto. The cutting insert has upper and lower surfaces and a boundary surface extending therebetween. The lower surface has a plurality of lower engaging elements and the boundary surface has a plurality of alternating first and second peripheral surfaces intersecting the upper surface to form first and second upper cutting edges. In each index position with the lower surface in contact with the first seat surface, the first support wall prevents translation of the cutting insert in a first direction, and the first engagement elements eccentrically contact the lower engaging elements to prevent translation of the cutting insert in a second direction perpendicular to the first direction.

A cutting insert has a first (top) end surface, a second (bottom) end surface, a peripheral side surface connecting the top and bottom end surfaces, and a mounting hole having a central axis O which penetrates the top and bottom end surfaces. Cutting edges are formed on an intersecting edge between the first end surface and the peripheral side surface. The second end surface has an inclined part. When a virtual plane substantially perpendicular to the axis O and passing through any point of the cutting edges is defined, the inclined part is inclined so as to be more distant from the virtual plane, heading from the peripheral side surface to the axis O. A projected part projected in a direction along the axis O is formed in an area around the mounting hole in the inclined part. This reinforces the strength of the mounting hole.