Abstract: A cutting insert has a trigonal shape. The cutting insert has a peripheral surface that extends between two opposing identical end surfaces. A median plane (M) bisects the cutting insert between the end surfaces. A through bore extends between the end surfaces. A cutting edge, formed at the intersection of each end surface with the peripheral surface, is divided into three identical cutting sections. Each cutting section is located between two vertexes of the trigonal shape. Each cutting section has a convex primary cutting edge and a concave secondary cutting edge that merge together. An insert tangential abutment surface is located between the cutting edge and the through bore. A primary relief surface forms an insert internal obtuse angle with a first reference plane (P1). A secondary relief surface forms an insert internal acute angle with a second reference plane (P2).

Abstract: A cutting tool has cartridges in which cutting inserts may be retained. The location of each cartridge is adjustable by a bidirectional adjustment mechanism having an adjustment screw directed in the direction of adjustment. The adjustment screw has a head and a flexible flange with an annular recess therebetween. A protuberance projecting from the cartridge engages the annular recess with an interference fit thereby coupling the adjustment screw to the cartridge. As the adjustment screw is screw rotated about its axis of screw rotation it moves along the axis of screw rotation taking the cartridge with it. Screw rotation of the adjustment screw in opposite senses results in the adjustment of the position of the cartridge in opposite directions. Due to the fact that the protuberance is firmly located in the annular recess of the adjustment screw, play or backlash is eliminated.

Abstract: An adjustment mechanism allows for bidirectional adjustment of the position of a cutting insert retained in a cutting tool by a securing screw. The adjustment mechanism includes an adjustment screw, a slider, the cutting insert and the securing screw. The rotation of the adjustment screw in opposite senses results in the bidirectional axial adjustment of the position of the cutting insert, while the securing screw is fixed in and retains the cutting insert.

Abstract: A tangential cutting insert has an insert body provided with a convex upper surface, a bottom surface provided with a cylindrical insert protrusion, and a peripheral side surface including a pair of opposing major side surfaces and a pair of opposing minor side surfaces. A sloped, major cutting edge in formed at the intersection of each major side surface with the top surface, the rake surface being formed in the major side surface. The bottom surface is provided with an insert protrusion abutment surface for seating the cutting insert. An insert recess is formed in the cylindrical insert protrusion, and this recess communicates with the insert's through bore. The cutting insert is seated in an insert pocket with the insert protrusion abutment surface in abutment with the pocket case. A cylindrical pocket protrusion rising from the pocket base and having a threaded bore formed therein enters the recess and is aligned with the insert's through bore.

Abstract: A clamping mechanism clamps a cutting insert in a tool body. The clamping mechanism has a clamping arm seated within a clamping arm pocket. The clamping arm includes a clamping protrusion extending rearwardly from a rear surface of the clamping arm. The cutting insert has a bore having an insert retaining surface and is seated within an insert pocket. Upon tightening the clamping arm into the tool body, the clamping protrusion presses against the insert retaining surface and the cutting insert is securely abutted within the insert pocket.

Abstract: A cutting insert has a trigonal shape. The cutting insert has a peripheral surface that extends between two opposing identical end surfaces. A median plane (M) bisects the cutting insert between the end surfaces. A through bore extends between the end surfaces. A cutting edge, formed at the intersection of each end surface with the peripheral surface, is divided into three identical cutting sections. Each cutting section is located between two vertexes of the trigonal shape. Each cutting section has a convex primary cutting edge and a concave secondary cutting edge that merge together. An insert tangential abutment surface is located between the cutting edge and the through bore. A primary relief surface forms an insert internal obtuse angle with a first reference plane (P1). A secondary relief surface forms an insert internal acute angle with a second reference plane (P2).

Abstract: The disclosure provides a device for adjusting a position of a cutting insert, the device may include an adjustment screw, an adjustment wedge adapted to receive the screw, wherein a position of the wedge is a function of the rotation of the screw and a partially flexible intermediate member between a surface of the wedge and a surface of the cutting insert, wherein the intermediate member is supported on both ends. The disclosure further provides a cutting tool adapted to receive at least one device for adjusting a position of a cutting insert, wherein the device may include an adjustment screw, an adjustment wedge adapted to receive the screw, wherein a position of the wedge is a function of the rotation of the screw and a partially flexible intermediate member between a surface of the wedge and a surface of the cutting insert, wherein the intermediate member is supported on both ends.

Abstract: A cutting insert for retention in a rotating cutting tool having an axis of rotation has two opposing end surfaces and a peripheral surface extending therebetween, each end surface having a mutual first axis of symmetry passing through the end surfaces about which each end surface has N-fold rotational symmetry for some value of N where N is chosen from the group consisting of 2, 3 and 4. A peripheral cutting edge is formed at the junction between each end surface and the peripheral surface, the peripheral cutting edge having N curved cutting edges merging with N straight cutting edges which extend between the curved cutting edges at extremities thereof. The curved cutting edges of the two end surfaces are not aligned in an end view of the cutting insert along the first axis of symmetry.

Abstract: A cutting tool has cartridges in which cutting inserts may be retained. The location of each cartridge is adjustable by a bidirectional adjustment mechanism having an adjustment screw directed in the direction of adjustment. The adjustment screw has a head and a flexible flange with an annular recess therebetween. A protuberance projecting from the cartridge engages the annular recess with an interference fit thereby coupling the adjustment screw to the cartridge. As the adjustment screw is screw rotated about its axis of screw rotation it moves along the axis of screw rotation taking the cartridge with it. Screw rotation of the adjustment screw in opposite senses results in the adjustment of the position of the cartridge in opposite directions. Due to the fact that the protuberance is firmly located in the annular recess of the adjustment screw, play or backlash is eliminated.

Abstract: A cutting tool has at least one cutting insert seated therein. The cutting insert has a longitudinal axis, an upper surface, a lower surface and a peripheral surface that extends between the upper surface and the lower surface. At least a portion of an intersection between the upper surface and the peripheral surface constitutes a cutting edge. The lower surface has at least one set of base abutment surfaces, each set including at a least one major base abutment surface and at least one minor base abutment surface, the major and minor base abutment surfaces of a given set being spaced apart from one another along the longitudinal axis. When the lower surface has two such sets of base abutment surfaces, the major and minor base abutment surfaces of the first set are longitudinally displaced from the corresponding major and minor base abutment surfaces of the second set.

Abstract: A tangential cutting insert has three pairs of surfaces. A first pair has upper and lower surfaces, a second pair has front and rear surfaces, and a third pair has two side surfaces. The upper and lower surfaces and the side surfaces extend between the front and rear surfaces. A main cutting edge is formed at the intersection of the front surface with the upper surface. A front portion of the upper surface extends rearwardly from the main cutting edge and upwardly toward a central portion of the upper surface as seen in a side view of the cutting insert. The main cutting edge associated with the upper surface is curved and slopes downwardly toward each of the auxiliary cutting edges as seen in a front view of the cutting insert.

Abstract: A tangential cutting insert has an insert body provided with a convex upper surface, a bottom surface provided with a cylindrical insert protrusion, and a peripheral side surface including a pair of opposing major side surfaces and a pair of opposing minor side surfaces. A sloped, major cutting edge in formed at the intersection of each major side surface with the top surface, the rake surface being formed in the major side surface. The bottom surface is provided with an insert protrusion abutment surface for seating the cutting insert. An insert recess is formed in the cylindrical insert protrusion, and this recess communicates with the insert's through bore. The cutting insert is seated in an insert pocket with the insert protrusion abutment surface in abutment with the pocket case. A cylindrical pocket protrusion rising from the pocket base and having a threaded bore formed therein enters the recess and is aligned with the insert's through bore.

Abstract: The disclosure provides a device for adjusting a position of a cutting insert, the device may include an adjustment screw, an adjustment wedge adapted to receive the screw, wherein a position of the wedge is a function of the rotation of the screw and a partially flexible intermediate member between a surface of the wedge and a surface of the cutting insert, wherein the intermediate member is supported on both ends. The disclosure further provides a cutting tool adapted to receive at least one device for adjusting a position of a cutting insert, wherein the device may include an adjustment screw, an adjustment wedge adapted to receive the screw, wherein a position of the wedge is a function of the rotation of the screw and a partially flexible intermediate member between a surface of the wedge and a surface of the cutting insert, wherein the intermediate member is supported on both ends.

Abstract: A shank of a milling cutter can be somewhat elastic. As a result, during plunging down into a workpiece the milling cutter will not plunge in a true axially downward direction and will form a slanted wall in the workpiece. A milling cutting insert is provided which is capable of “straightening out” the slanted wall. The cutting insert has a rear cutting edge which removes material when the milling cutter is moved axially upwardly.

Abstract: A milling cutter with a disk like cutter body having radially directed slots and a central aperture. An exchangeable hub comprises two adapter members located on either side of the cutter body. One of the adapter members has a raised portion located in the central aperture. The adapter members are secured to the cutter body by means of pins which are located in blind holes in the adapter members and which pass through engagement members positioned in the slots.

Abstract: The present invention provides a cutting insert an indexable cutting insert, for use in a cutting tool for milling operations. The cutting insert is generally rhomboidal in shape having a peripheral side surface extending between and perpendicular to the two opposing end surfaces. A cutting edge section is associated with each end surface and comprises first and second cutting edges merging at a corner cutting edge. The two first cutting edges associated with each end surface, form a non-zero first angle with respect to a median plane of the cutting insert. The peripheral side surface comprises four generally flat major side surfaces, two diametrically opposing radiused corner side surfaces, and two diametrically opposing generally flat minor side surfaces. Each end surface is provided with a flat end region. The flat end regions are parallel and form axially outermost protruding regions of the cutting insert.

Abstract: A milling cutter with a disk like cutter body having radially directed slots and a central aperture. An exchangeable hub comprises two adapter members located on either side of the cutter body. One of the adapter members has a raised portion located in the central aperture. The adapter members are secured to the cutter body by means of pins which are located in blind holes in the adapter members and which pass through engagement members positioned in the slots.

Abstract: A rotary slot milling cutter has a plurality of cutting portions, each cutting portion having an insert pocket and a cutting insert removably mounted therein. The cutting insert includes a top face and a bottom face which has two spaced-apart abutments, with a ceiling formed therebetween. The insert pocket has a generally axially disposed pocket base provided with two support surfaces and a radially extending rib disposed therebetween, the rib having a roof and two banks. When the cutting insert is mounted in the insert pocket, the abutment platforms abut the support surfaces, and a gap exists between the roof of the rib and the ceiling, and between each side-slope and adjacent banks.

Abstract: A shank of a milling cutter can be somewhat elastic. As a result, during plunging down into a workpiece the milling cutter will not plunge in a true axially downward direction and will form a slanted wall in the workpiece. A milling cutting insert is provided which is capable of “straightening out” the slanted wall. The cutting insert has a rear cutting edge which removes material when the milling cutter is moved axially upwardly.

Abstract: A milling cutter with a disk like cutter body having radially directed slots and a central aperture. An exchangeable hub comprises two adapter members located on either side of the cutter body. One of the adapter members has a raised portion located in the central aperture. The adapter members are secured to the cutter body by means of pins which are located in blind holes in the adapter members and which pass through engagement members positioned in the slots.