摘要:
A cutting insert for mounting on a milling cutter has a generally quadrangular shape with top and bottom surfaces, a pair of opposite first side surfaces intersecting the top surface at first cutting edges and a pair of opposite second side surfaces intersecting the top surface at second edges. Each second edge has a front cutting portion oriented substantially transversely to an adjacent first cutting edge and meeting therewith via a cutting corner. Each of the first and second side surfaces has upper and lower sections adjacent respective top and bottom surfaces, which sections have leading portions adjacent their associated cutting corner and trailing portions remote therefrom. The trailing portion of the lower section of each second side surface is at least slightly inwardly depressed relative to the leading portion of the lower section and is substantially inwardly depressed relative to the associated trailing portion of the upper section of the second side surface. The trailing portions of the lower and upper sections merge via a transition surface oriented transversely thereto.
摘要:
A cutting insert for with a rotary milling cutting tool is disclosed. The insert has a cutting edge defined between a cutting rake surface and a relief flank and a base edge defined between the relief flank and a base surface. The cutting edge comprises a plurality of successive component cutting edges and intermediate edges located between successive component cutting edges. Each component cutting edge has a leading end and a trailing end, and is downwardly inclined from its leading end towards the base edge. Each leading end, other than that belonging to a first leading component cutting edge, is connected to an immediately preceding trailing end via an intermediate edge which rises from the preceding trailing end away from the base edge.
摘要:
A cutting insert for use with a rotary milling cutter tool and having a cutting edge defined between a cutting rake surface and a relief flank and having a base edge defined between said relief flank and a base surface; the cutting edge inculding a plurality of successive component cutting edges and intermediate edges respectively located cutting edge having respective leading and trailing extremities, the trailing extremity of one component cutting edge merging with the leading extremity of a succeeding component cutting edge via an intermediate edge, the intermediate edge being directed from the trailing extremity of the one component cutting edge towards the base edge; each normal to an axis of rotation of said cutter tool which passes through a trailing extremity of one component cutting edge intersecting the successive component cutting edge so that during a milling operation, successive component cutting edges overlap.
摘要:
A rotary milling cutting tool having a cutting insert having at least one cutting edge. The cutting edge has a number of successive component cutting edges with intermediate edges. The intermediate edges are located between the successive component cutting edges. The cutting insert is mounted in the cutting tool so that the successive component cutting edges of the insert overlap during a milling operation. The successive component cutting edges being arranged on a curved envelope defined by the rotation of a generator about the rotational axis of the rotary milling cutting tool.
摘要:
A metal cutting tool having a tool holder and a pocket formed in the tool holder in which an insert is to be replaceably retained, there being formed in the tool holder an elongated tubular recess which opens into the pocket and there being furthermore provided a replaceable element having a split tubular coupling portion formed integrally therewith so as to be insertable upon spring-like compression into the tubular recess. This replaceable element is preferably constituted by an insert seating shim.
摘要:
The invention relates to a milling cutter insert of substantially prismatic rhomboidal shape which comprises upper, base and side surfaces. The intersection of each side surface and the upper surface constitutes a cutting edge. Rake surfaces form part of the upper surface and are associated with the cutting edges. A first pair of adjacent cutting edges meets at a first common insert corner. A second pair of adjacent cutting edges meets at a second common insert corner diagonally located with respect to the first insert corner. The constituent cutting edges of each pair and their associated rake surfaces slope towards the base surface and their common corner.
摘要:
A cutting insert for use with a rotary milling cutter tool has at least one major cutting edge comprising first, second and third successive component cutting edges. Each second component cutting edge is substantially coextensive with the bore and is of substantially greater length than the length of each of the first and second component cutting edges, and defines with respect to the axis of rotation of the cutter tool an axial rake angle which is substantially less positive than the axial rake angles defined respectively to the first and third component cutting edges with respect to the axis of rotation.
摘要:
A cutting insert for use in a peripheral rotary milling cutter having a cylindrical holder and a side cutting edge defined between a cutting rake surface and a side relief flank and a side base edge defined between the side relief flank and a base surface. The side relief flank has first and second component side relief flank surfaces which intersecet at an intersection line, the latter extending along the side relief flank from a first position adjacent a leading end of the insert and located at an intermediate position thereof to a second position intersecting the cutting edge and adjacent a trailing end of the insert. The component flank surfaces are substantially planar and are angularly disposed with respect to one another so that an insert side relief angle (.gamma..sub.A) as defined with respect to the cylindrical holder in the region of the leading end substantially equals an insert side relief angle (.gamma..sub.B) in the region of the trailing end.
摘要:
A cutting tool has a cutting insert removably secured to a tool body by a fastening member. The cutting insert includes a clamping bore having at least two upper and at least two lower clamping portions intersecting a first and a second horizontal plane, respectively, the first and second horizontal planes being perpendicular to a central axis and spaced apart from each other, and the clamping bore being non-circular at cross-sections taken in the first and second horizontal planes. Upper and lower imaginary lines tangential to the at least two upper and the at least two lower clamping portions, respectively, form zero or acute first and second clamping angles with the central axis, the first and second clamping angles being different. Exactly two upper and exactly two lower clamping portions are in simultaneous clamping contact with an equal number of corresponding clamping zones on the fastening member.