Abstract: A rotary cutting tool has a cutting body and a plurality of cutting inserts, including a first insert removably secured in a first pocket and a second insert removably secured in a second pocket. The first pocket opens out at a forward end surface of the cutting body, having a seat surface with an axial support wall transverse thereto, and the second pocket is located axially rearward of the first pocket. The first insert has opposing front and back end surfaces, with a peripheral side surface extending therebetween which is in contact with the seat surface and the axial support wall. A first major cutting edge of the first insert axially overlaps with a second major cutting edge of the second insert, and in a side view of the cutting tool, a raised shoulder surface adjacent the axial support wall is at least partially obscured by the second insert.

Abstract: A cutting insert has opposing front and back end surfaces with a peripheral side surface extending therebetween and a first axis extending therethrough, and a median plane perpendicular to the first axis located between the front and back end surfaces. Each of the front and back end surfaces has a rectangular shape in a respective end view thereof, and two diagonally opposed raised corners and two diagonally opposed lowered corners with respect to the median plane. The front end surface has a front major cutting edge associated therewith, and in a cross-section taken in a first plane containing the first axis, the front end surface has a concave shape and the back end surface has a convex shape. The cutting insert is removably secured in an insert receiving pocket of a cutting tool with the peripheral side surface and back end surface making contact with pocket support walls.

Abstract: A rotary cutting tool has a cutting body and a plurality of cutting inserts, including a first insert removably secured in a first pocket and a second insert removably secured in a second pocket. The first pocket opens out at a forward end surface of the cutting body, having a seat surface with an axial support wall transverse thereto, and the second pocket is located axially rearward of the first pocket. The first insert has opposing front and back end surfaces, with a peripheral side surface extending therebetween which is in contact with the seat surface and the axial support wall. A first major cutting edge of the first insert axially overlaps with a second major cutting edge of the second insert, and in a side view of the cutting tool, a raised shoulder surface adjacent the axial support wall is at least partially obscured by the second insert.

Abstract: A cutting insert has opposing front and back end surfaces with a peripheral side surface extending therebetween and a first axis extending therethrough, and a median plane perpendicular to the first axis located between the front and back end surfaces. Each of the front and back end surfaces has a rectangular shape in a respective end view thereof, and two diagonally opposed raised corners and two diagonally opposed lowered corners with respect to the median plane. The front end surface has a front major cutting edge associated therewith, and in a cross-section taken in a first plane containing the first axis, the front end surface has a concave shape and the back end surface has a convex shape. The cutting insert is removably secured in an insert receiving pocket of a cutting tool with the peripheral side surface and back end surface making contact with pocket support walls.

Abstract: A tangential cutting insert includes two opposing end surfaces and a peripheral side surface extending between the two opposing end surfaces. The peripheral side surface includes two opposing major side surfaces connected to two opposing minor side surfaces via corner side surfaces. A peripheral edge is formed at the intersection of each end surface with the peripheral side surface. Each end surface has two raised corners with associated raised corner cutting edges and two lowered corners with associated lowered corner cutting edges. Each of the corner side surfaces includes a concave clearance depression which serves as a relief surface for an associated lowered corner cutting edge. The concave clearance depression extends from its associated lowered corner cutting edge in the direction of, but does not intersect, a raised corner associated with opposite end surface.

Abstract: A tangential milling cutting insert has two identical opposing end surfaces with two identical opposing major side surfaces of a generally parallelogrammatic shape and two identical opposing minor side surfaces extending between them. An ambidextrous tangential cutting insert has two non-identical end surfaces and two opposing major side surfaces of a generally trapezoidal nature. In either cutting insert, each end surface has a peripheral cutting edge and four corners of which two diagonally opposed corners are lowered and the other two are raised. Each end surface has four separate planar regions arranged in pairs, the planar regions do not protrude relative to the surrounding end surface and the two planar regions of a given pair of planar regions slope in opposite directions with respect to a median plane of the cutting insert.

Abstract: A drill adapter has a resilient insert retaining portion at one end, a drive stem at the second end, and an adapter seating portion between the two. The insert retaining portion includes first and second resilient clamping members which are rotationally 180° apart. The resilient clamping members are separated by a narrow slit which communicates with an internal through bore extending across a diameter of the insert retaining portion. The seating portion includes a pair of planar abutment surfaces which are supported by a lower seating surface formed on the drill adapter seating portion, when the drill is assembled. The drive stem is provided with a pair of longitudinally extending drive slots. When inserted into an end bore formed at the operative end portion of a drill shaft, the drive slots receive complementary guides formed on an inner wall of the end bore.

Abstract: A tangential milling cutting insert has two identical opposing end surfaces with two identical opposing major side surfaces of a generally parallelogrammatic shape and two identical opposing minor side surfaces extending between them. An ambidextrous tangential cutting insert has two non-identical end surfaces and two opposing major side surfaces of a generally trapezoidal nature. In either cutting insert, each end surface has a peripheral cutting edge and four corners of which two diagonally opposed corners are lowered and the other two are raised. Each end surface comprises four separate planar regions arranged in pairs, the planar regions do not protrude relative to the surrounding end surface and the two planar regions of a given pair of planar regions slope in opposite directions with respect to a median plane of the cutting insert.

Abstract: A tangential milling cutting insert has two identical opposing end surfaces with two identical opposing major side surfaces of a generally parallelogrammatic shape and two identical opposing minor side surfaces extending between them. An ambidextrous tangential cutting insert has two non-identical end surfaces and two opposing major side surfaces of a generally trapezoidal nature. In either cutting insert, each end surface has a peripheral cutting edge and four corners of which two diagonally opposed corners are lowered and the other two are raised. Each end surface comprises four separate planar regions arranged in pairs, the planar regions do not protrude relative to the surrounding end surface and the two planar regions of a given pair of planar regions slope in opposite directions with respect to a median plane of the cutting insert.

Abstract: A drill adapter has a resilient insert retaining portion at one end, a drive stem at the second end, and an adapter seating portion between the two. The insert retaining portion includes first and second resilient clamping members which are rotationally 180° apart. The resilient clamping members are separated by a narrow slit which communicates with an internal through bore extending across a diameter of the insert retaining portion. The seating portion includes a pair of planar abutment surfaces which are supported by a lower seating surface formed on the drill adapter seating portion, when the drill is assembled. The drive stem is provided with a pair of longitudinally extending drive slots. When inserted into an end bore formed at the operative end portion of a drill shaft, the drive slots receive complementary guides formed on an inner wall of the end bore.

Abstract: A tangential milling cutting insert has two identical opposing end surfaces with two identical opposing major side surfaces of a generally parallelogrammatic shape and two identical opposing minor side surfaces extending between them. An ambidextrous tangential cutting insert has two non-identical end surfaces and two opposing major side surfaces of a generally trapezoidal nature. In either cutting insert, each end surface has a peripheral cutting edge and four corners of which two diagonally opposed corners are lowered and the other two are raised. Each end surface comprises four separate planar regions arranged in pairs, the planar regions do not protrude relative to the surrounding end surface and the two planar regions of a given pair of planar regions slope in opposite directions with respect to a median plane of the cutting insert.

Abstract: A rotary milling cutter has a cutter body mountable on an adapter. A first side of the adapter is provided with circumferentially arranged drive pins centered about a centrally positioned, conically tapered male locating member. A first side of the cutter body is provided with circumferentially arranged drive grooves centered about a centrally positioned, conically tapered female locating member. The drive pins have a base portion connected to a head portion while the drive grooves have an insertion portion connected to a retaining portion. During assembly, the first side of cutter body and the first side of the adapter are first moved into an initial mating position in which the drive pins enter the insertion portions of the drive grooves and the male locating member enters the female locating member. The cutter body is then rotated relative to the adapter such that the drive pins enter the retaining portions of the grooves.

Abstract: A cutting tool with a cutting tool holder and a plurality of replaceable indexable cutting inserts releasably attached to the holder. The holder has seats located about the circumference of one end of the holder for mounting of the cutting inserts. The seats are oriented with respect to the central axis of the tool holder such that not all seats have the same orientation, and this change in orientation allows greater use of the cutting edge of each insert.

Abstract: Disclosed is a “nest” or seating element for tangentially-mounted “on-edge” cutting inserts for face mills which shares a peripheral pocket of the face mill with the cutting insert, and which facilitates the adjustment of the cutting insert it supports by virtue of its resilience in the axial direction of the face mill.

Abstract: The T-slot milling cutter disclosed employs an indexable insert having two alternative edge surfaces which serve alternatively as the rake face and rear abutting face of the insert which transfers the cutting force to the rear wall of the insert pocket of the cutter. The alternative edge surfaces comprise three facets, once central to the surface and the other two receding from the central facet at equal angles thereto. They serve primarily to wedge the insert into mating angular surfaces in the rear wall of the insert pocket to secure the insert against dislodgement when held in the pocket by the customary attaching screw and, by their obliquity to the cutting direction, improve the cutting action when serving as the rake face.

Abstract: A cutting tool with a cutting tool holder and a plurality of replaceable indexable cutting inserts releasably attached to the holder. The holder has seats located about the circumference of one end of the holder for mounting of the cutting inserts. The seats are oriented with respect to the central axis of the tool holder such that not all seats have the same orientation, and this change in orientation allows greater use of the cutting edge of each insert.

Abstract: The cutting fluid distribution system disclosed is one in which the cutting fluid passages which carry the cutting fluid from a pressurized source to the cutting bits of a rotary milling cutter are incorporated into the cutter in a way to be formed in large part by the mere assembly of the constituent elements of the cutter.

Abstract: The cutting fluid distribution system disclosed is one in which the cutting fluid passages which carry the cutting fluid from a pressurized source to the cutting bits of a rotary milling cutter are incorporated into the cutter in a way to be formed in large part by the mere assembly of the constituent elements of the cutter.

Abstract: Disclosed is a “nest” or seating element for tangentially-mounted “on-edge” cutting inserts for face mills which shares a peripheral pocket of the face mill with the cutting insert, and which facilitates the adjustment of the cutting insert it supports by virtue of its resilience in the axial direction of the face mill.

Abstract: The T-slot milling cutter disclosed employs an indexable insert having two alternative edge surfaces which serve alternatively as the rake face and rear abutting face of the insert which transfers the cutting force to the rear wall of the insert pocket of the cutter. The alternative edge surfaces comprise three facets, once central to the surface and the other two receding from the central facet at equal angles thereto. They serve primarily to wedge the insert into mating angular surfaces in the rear wall of the insert pocket to secure the insert against dislodgement when held in the pocket by the customary attaching screw and, by their obliquity to the cutting direction, improve the cutting action when serving as the rake face.