Abstract: A rotatable cutting tool has a cutting tool body having at least one recess for receiving a replaceable insert. The recess has a wall defined by a deformable clamp extending radially from the tool body, the clamp having a leaf isolated from the tool body except at the base of the leaf by an isolating channel in the tool body. The tool further has an adjustable leaf-bending element for elastically deforming the leaf to retain a replaceable insert in the recess.

Abstract: The instant invention is directed to an adjustment device for a multiple insert cutting tool with adjusting elements using a wedge to adjust the position of an insert in a tool body pocket through an intermediate component having expansion elements. The intermediate component is disposed in a cavity which is at least partly contiguous with a pocket containing an insert. The intermediate component engages the insert to be adjusted and, when expanded, adjusts the position of the insert.

Abstract: A milling tool includes a milling body and a plurality of insert-carrying cartridges mounted in the milling body. Each cartridge includes front and rear side surfaces which oppose leading and trailing walls of a pocket formed in the milling body. The cartridge also includes inner and outer flank surfaces which interconnect the front and rear side surfaces. The body includes a slot which opens into the front side surface at a location intermediate the ends of the cartridge, to divide the body into a rigid base portion and an expandable portion. The base portion has a seat for a cutting insert. A threaded hole is formed in the slot intermediate the slot ends to receive a threaded wedge screw. Tightening of the screw causes the expandable portion to be expanded into contact with the leading wall of the pocket and thereby push the base portion into tight contact with the trailing wall of the pocket. Accordingly, the cartridge is secured within the pocket by a tight frictional contact which resists chafter.

Abstract: A rotatable cutting tool has a shank portion for coupling to a tool driving device and a cutting portion to which is attached at least one support member for retention of a replaceable cutting element. The support member is so arranged to permit displacement of at least the portion thereof retaining the cutting element whereby the position of the cutting element relative to the body of the cutting tool may be changed by such displacement. A totally enclosed hydraulic force multiplier is mounted within an internal cavity of the cutting tool. The force multiplier is responsive to a control force to effect the displacement of the support member, the control force advantageously supplied by application of pneumatic pressure.

Abstract: An indexable turning insert has main upper and lower surfaces of polygonal shape joined by side surfaces. Insert corners are defined by the intersection of insert sides at each corner of the polygonal surfaces, insert corners having a curve of relatively small radius defining the nose of the corner. The inserts are at least partially symmetrical and have a plurality of identical cutting edges. Adjacent the corner nose of an identical cutting edge are wiping surfaces comprising at least one curved segment joining the insert corner radius and defined by a radius larger than the corner radius and at least one flat segment intersecting the insert side at a shallow angle.

Abstract: Methods for coating a substrate and methods of shaping a workpiece comprise formation and use, respectively, of a surface or substrate comprising a first phase selected from nitrides, carbides. carbonitrides, borides, sulphides, chalcogenides, oxides, and silicides, and a second phase selected from nitrides, carbides, carbonitrides, borides, sulphides, chalcogenides, oxides, and silicides, wherein said second phase comprises a multiplicity of discrete portions positioned into the first phase, with these multiplicity of portions comprising a continuous second phase, and made thereof, coating and articles, especially machining, cutting and shaping tools, wearparts, and methods of making and using the composition, coating and articles.

Abstract: A rotatable cutting tool has a shank portion for coupling to a tool driving device and a cutting portion in which are retained plural replaceable cutting inserts, each insert having at least one cutting edge. The shank portion includes a mounting face for removeably supporting an insert mounting disk having plural recesses at the periphery thereof for receiving the replaceable inserts. Each recess provides at least one seating surface for an insert, and includes opposing face portions between which an insert is releasably retained. The disk includes a central bore and radial grooves, at least one radial groove connecting the central bore and each insert receiving recess. The disk includes a concave central portion surrounding the central bore. A clamping means secures the disk to the shank and is used to elastically deform the concavity of the disk, whereby clamping forces are built and relaxed on all inserts placed in the disk concurrently by adjustment of the clamping means.

Abstract: A rotatable cutting tool comprising a cutting tool body having at least one recess for receiving a replaceable insert. The recess has a wall defined by a deformable clamp extending radially from the tool body, the clamp comprising a leaf isolated from the tool body except at the base of the leaf by an isolating channel in the tool body. The tool further comprising adjustable clamping means for elastically deforming the leaf to retain a replaceable insert in the recess.

Abstract: An indexable turning insert has main upper and lower surfaces of polygonal shape joined by side surfaces. Insert corners are defined by the intersection of insert sides at each corner of the polygonal surfaces, insert corners having a curve of relatively small radius defining the nose of the corner. The inserts are at least partially symmetrical and have a plurality of identical cutting edges. Adjacent the corner nose of an identical cutting edge are wiping surfaces comprising at least one curved segment joining the insert corner radius and defined by a radius larger than the corner radius and at least one flat segment intersecting the insert side at a shallow angle.

Abstract: An insert providing an improved wiper on cutting edges that form the surface finish of a workpiece, wherein the cutting edge is a curve in a plane of the flank that forms the finish cutting edge, the curve having an apex proximate the common corner, the curve forming a wiper on the finish cutting edge at or closely proximate to the apex.

Abstract: The instant invention is directed to an adjustment device for a multiple insert cutting tool with adjusting elements using a wedge to adjust the position of an insert in a tool body pocket through an intermediate component having expansion elements. The intermediate component is disposed in a cavity which is at least partly contiguous with a pocket containing an insert. The intermediate component engages the insert to be adjusted and, when expanded, adjusts the position of the insert.

Abstract: A process for forming a titanium carbonitride cemented carbide cutting insert, said cemented carbide is comprised of more than 70 percent by weight tungsten carbide and has a matrix binder comprising cobalt with a cobalt enriched stratified surface. The process comprises chemically vapor depositing a layer of titanium carbonitride on said cemented carbide substrate by heating gaseous reactants comprising titanium chloride, methane, hydrogen, and nitrogen with an optimum methane/nitrogen ratio, under suitable conditions to form a titanium carbonitride coated insert having an eta phase in the cemented carbide substrate adjacent said titanium carbonitride coating.

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.

Abstract: A tool assembly affording a wider range of adjustment of machining diameter, comprises a boring bar and a tool cartridge supporting a cutting tip and attached to the boring bar. The tool cartridge chassis is pivotably attached via a pin within a recess formed in boring bar; an adjustment screw is provided to a first side of the pivot axis, the screw being threaded into the cartridge chassis and situated in abutment with a surface of the bar. A compression spring is provided to a second side of the pivot axis, interposed between the boring bar and the cartridge chassis. Appreciable pivotal motion can be imparted to the cartridge chassis by loosening or tightening the adjustment screw. Adjustments can be made automatically by providing a draw-bar.

Abstract: A fully indexable negative geometry polygonal insert uses an active cutting edge extending in a first direction from each corner of the polygon downwardly from an associated major polygonal surface of the insert along with a wiping or finishing cutting edge lying substantially in the plane of the associated major surface and extending in a second direction from the insert corner. The geometry of the cutting edge enables mounting of the insert to a milling cutter with negative axial rake, such that the cutting edge is substantially parallel to an axis of rotation of the cutting tool.