Abstract: Cutting insert cartridge for chip removing machining tools has an axial adjustment system threadedly engaged with a cartridge body and a tool body. The axial adjustment system includes a differential screw in threaded engagement with the tool body either directly, for example by threaded engagement with a threaded opening in the tool body, or indirectly, for example by threaded engagement with a cross dowel fastener slidably positioned in an opening in the tool body. Actuation portion positioned axially between threaded end portions of the differential screw has an engagement feature on an outer surface to be driven, e.g., with a tool or by hand, to rotate the differential screw and adjust the axial position of the cartridge. The spaced apart relationship improves access to the actuation portion and engagement feature for rotation of the differential screw. Chip removing machining tools with such cartridges and methods of machining are also disclosed.

Abstract: An indexable cutting insert includes at least two side edges each defining an indexable edge of the insert and at least two cutting teeth are on each indexable edge. The cutting insert includes locating means on a plane of the upper face and/or a plane of the lower face. When mounted on a material removal tool, the locating means cooperate with receivers on the working face of the material removal tool to constrain degrees of freedom of the cutting insert. Further, the mounted cutting inserts each locate the radial edge of the cutting teeth in the active position on a common circumference of a circle centered on an axis of rotation of the material removal tool. A mounting system per see is also disclosed as well as a method of removing material from a workpiece with the material removal tool.

Abstract: Cutting insert cartridge for chip removing machining tools has an axial adjustment system threadedly engaged with a cartridge body and a tool body. The axial adjustment system includes a differential screw in threaded engagement with the tool body either directly, for example by threaded engagement with a threaded opening in the tool body, or indirectly, for example by threaded engagement with a cross dowel fastener slidably positioned in an opening in the tool body. Actuation portion positioned axially between threaded end portions of the differential screw has an engagement feature on an outer surface to be driven, e.g., with a tool or by hand, to rotate the differential screw and adjust the axial position of the cartridge. The spaced apart relationship improves access to the actuation portion and engagement feature for rotation of the differential screw. Chip removing machining tools with such cartridges and methods of machining are also disclosed.

Abstract: A tool cartridge for a material removal tool has a cartridge body with, among other things, a recess extending through at least a portion of the cartridge body from a first side toward a second side, a long axis of the recess non-parallel to a long axis of the cartridge body and at least a portion of the recess open to a bottom side of the cartridge body, and a threaded opening for a differential screw proximate a second end of the tool body and positioned longitudinally between an opening for a clamping screw and at least a portion of a seat for a cutting tool insert. A thread axis of the threaded opening is at an angle G relative to a long axis of the tool cartridge. A material removal tool, a tool, and a method of adjusting a cutting tool insert are also disclosed.

Abstract: A cutting tool includes a polygonal cutter body and an end cutting insert for chipforming machining mounted in a serrated seat disposed at an axial end of the cutter body. A bottom surface of the insert has a plurality of parallel serrations meshing with corresponding serrations of the seat. The serrations extend transversely relative to the longitudinal axis for resisting axially rearward cutting forces applied to the insert. The seat is formed directly by the cutter body, or by a shim disposed beneath the insert. The shim is provided with a downward lip to transfer axial forces to the cutter body. The insert can be square or triangular, wherein the serrations are in the form of a plurality of sets of parallel serrations disposed adjacent respective cutting edges.

Abstract: A tool cartridge for a material removal tool has a cartridge body with, among other things, a recess extending through at least a portion of the cartridge body from a first side toward a second side, a long axis of the recess non-parallel to a long axis of the cartridge body and at least a portion of the recess open to a bottom side of the cartridge body, and a threaded opening for a differential screw proximate a second end of the tool body and positioned longitudinally between an opening for a clamping screw and at least a portion of a seat for a cutting tool insert. A thread axis of the threaded opening is at an angle G relative to a long axis of the tool cartridge. A material removal tool, a tool, and a method of adjusting a cutting tool insert are also disclosed.

Abstract: Rotary material removal tool mounted to a shaft for rotational motion includes a body and a plurality of radially extending arms. Each arm includes a radially outward peripheral edge, and, relative to a direction of rotational motion of the body, a leading side and a trailing side. Radially outward peripheral edges include a cutting insert mounting structure that projects axially below a bottom side of the body. The rotary material removal tool includes at least one of the following features to reduce measured air pressure (P1): (i) a leading edge of the insert mounting structure includes an air-displacement structure, (ii) the radially extending arms include at least one through-opening extending from the leading side to the trailing side, and (iii) the bottom side of the body is spaced from a plane containing a bottommost surface of the projecting cutting insert mounting structure. The air-displacement structure can be generally wedge-shaped, cone-shaped or pyramid-shaped.

Abstract: A cutting tool includes a polygonal cutter body and an end cutting insert for chipforming machining mounted in a serrated seat disposed at an axial end of the cutter body. A bottom surface of the insert has a plurality of parallel serrations meshing with corresponding serrations of the seat. The serrations extend transversely relative to the longitudinal axis for resisting axially rearward cutting forces applied to the insert. The seat is formed directly by the cutter body, or by a shim disposed beneath the insert. The shim is provided with a downward lip to transfer axial forces to the cutter body. The insert can be square or triangular, wherein the serrations are in the form of a plurality of sets of parallel serrations disposed adjacent respective cutting edges.

Abstract: An indexable cutting insert includes at least two side edges each defining an indexable edge of the insert and at least two cutting teeth are on each indexable edge. The cutting insert includes locating means on a plane of the upper face and/or a plane of the lower face. When mounted on a material removal tool, the locating means cooperate with receivers on the working face of the material removal tool to constrain degrees of freedom of the cutting insert. Further, the mounted cutting inserts each locate the radial edge of the cutting teeth in the active position on a common circumference of a circle centered on an axis of rotation of the material removal tool. A mounting system per see is also disclosed as well as a method of removing material from a workpiece with the material removal tool.

Abstract: Rotary material removal tool mounted to a shaft for rotational motion includes a body and a plurality of radially extending arms. Each arm includes a radially outward peripheral edge, and, relative to a direction of rotational motion of the body, a leading side and a trailing side. Radially outward peripheral edges include a cutting insert mounting structure that projects axially below a bottom side of the body. The rotary material removal tool includes at least one of the following features to reduce measured air pressure (P1): (i) a leading edge of the insert mounting structure includes an air-displacement structure, (ii) the radially extending arms include at least one through-opening extending from the leading side to the trailing side, and (iii) the bottom side of the body is spaced from a plane containing a bottommost surface of the projecting cutting insert mounting structure. The air-displacement structure can be generally wedge-shaped, cone-shaped or pyramid-shaped.

Abstract: A cutting tool is provided and includes a plurality of cutting inserts located in respective insert pockets. The cutting inserts each include a top cutting plane with at least one cutting edge and a bottom support plane. The top cutting plane includes an engagement portion for mating with a respective engagement portion located in the respective insert pocket. A clamping wedge clamps the cutting insert against the respective insert pocket. A shear resistance created between the engagement portions of the cutting insert and the respective insert pocket during operation of the tool is greater than a centrifugal force created during operation of the cutting tool. In an exemplary embodiment, the engagement portions are shown as a plurality of serrations. The cutting tool is particularly useful in high speed milling operations.

Abstract: A cutting tool is provided and includes a plurality of cutting inserts located in respective insert pockets. The cutting inserts each include a top cutting plane with at least one cutting edge and a bottom support plane. The top cutting plane includes an engagement portion for mating with a respective engagement portion located in the respective insert pocket. A clamping wedge clamps the cutting insert against the respective insert pocket. A shear resistance created between the engagement portions of the cutting insert and the respective insert pocket during operation of the tool is greater than a centrifugal force created during operation of the cutting tool. In an exemplary embodiment, the engagement portions are shown as a plurality of serrations. The cutting tool is particularly useful in high speed milling operations.

Abstract: A tool holder includes a plurality of portions arranged in end-to-end relationship and interconnected by friction weld to form a unitary assembly subjected to a heat treatment. The portions formed of different respective materials have different mass properties and/or different chemical compositions. A front-most one of the portions constitutes a cutter head portion, and a rear-most one of the portions constitutes a mounting portion. The cutter head portion can be in the form of an unfinished blank which is subsequently machined. A third portion, e.g. of aluminum, could be provided to minimize the weight of the tool holder.

Abstract: An indexable insert is located on a toolholder with reference to bearing surfaces on the insert and the toolholder which are proximate to the active cutting edge. These bearing surfaces are internal to the peripheral (side) flanks of the insert. Location of the insert in the toolholder is substantially independent of the relation between the toolholder pocket sidewalls and the peripheral flanks of the insert, thereby eliminating sources of error from insert manufacture and pocket manufacture. The insert and toolholder have locating units disposed thereon adapted to matingly engage each other when the insert is placed in the toolholder. At least one of the locator elements has a bearing surface or surfaces that extends through 360° and resulting in less movement of the insert during use.