Abstract:
A micro end mill includes a shank made of a first material and a cutting tip made of a second, different material that is bonded to the shank. The first material can be, for example, carbide or high speed steel (HSS), and the second material can be, for example, cubic boron nitride (CBN), polycrystalline cubic boron nitride (PCBN), ceramic or polycrystalline diamond (PCD). The micro end mill is manufactured by producing a billet made of Superhard material using laser radiation, bonding the billet to a shank of the end mill, and removing material from the billet using laser radiation to produce a cutting tip made of the Superhard material. The laser radiation may comprise a laser beam encased in a water jet or a laser beam with a non-Gaussian intensity profile.
Abstract:
Embodiments of the invention relate to methods of making articles having portions of polycrystalline diamond bonded to a surface of a substrate and polycrystalline diamond compacts made using the same. In an embodiment, a molding technique is disclosed for forming cutting tools comprising polycrystalline diamond portions bonded to the outer surface of a substrate.
Abstract:
Contoured helical solid polycrystalline PCD and PCBN superabrasive segments are provided for attachment to cutting tool substrates such as twist drill tips, reamers, burrs and endmills. Segments are provided in near to net shape for attachment to a tool substrate thereby requiring reduced finishing steps and providing increased tailorability of grade and quality of final polycrystalline segments. Cutting tools comprising cutting tool substrates having attached thereto a contoured helical solid polycrystalline PCD and PCBN superabrasive segments are also disclosed.
Abstract:
A milling tool having multiple cutting disks is disclosed. Each cutting disk is anchored into a flute on the milling tool with clamping screws. During use, the cutting disks naturally become dull. In a preferred embodiment, a single clamping screw is used to hold the cutting disk in place. The clamping screw is loosened and the cutting disk is rotated such that a new and sharp portion of the cutting disk is exposed for use. In an alternative embodiment, multiple clamping screws are used to secure the cutting disk into the flute. In the event a cutting disk becomes stuck in a flute, a clamping screw in a threaded bore coaxially aligned with the locating bore is used to push the cutting disk and eject it out of the flute. This design allows for many positions on the cutting disk to be used before the disk needs to be replaced, sharpened, or refurbished.
Abstract:
The invention relates to a milling tool (1) having a length ltotal and diameter dtotal and having blades (2) for the milling of mostly metal workpieces. In order to prevent an uncontrolled failure of the milling tool, it is proposed that the blades (2) are partially or entirely made of polycrystalline cubic boron nitride (PcBN) or polycrystalline diamond (PCD) and the diameter dtotal of the milling tool lies between 7 mm and 40 mm.
Abstract:
Rotary tool, such as a drill or milling cutter, having a main tool body, which extends along a center longitudinal axis, which has a flute and which, at a distance from the center longitudinal axis, has an insert seat which is introduced into the flute wall and in which a cutting insert, in particular made of a superhard material such as PCD or PCBN, is fastened integrally, wherein, for fixing both a radial and also an axial position of the cutting insert, the insert seat has an abutment wall which has a contour for positioning the cutting insert in a rotationally locked manner.
Abstract:
There is provided a diamond film for cutting-tools which has high toughness, excellent adhesiveness, high hardness, and in which tool service life is considerably improved in relation to cutting ultra-hard alloys and other very hard work materials. A diamond film for cutting-tools formed on a base material, in which at least one or more multilayered film layers [A] are included in which the layers are constituted by layering a film layer [α] having a film thickness of 1 μm or more and 15 μm or less and a film layer [β] having a film thickness of 1 μm or more and 20 μm or less so that the film layer [α] is disposed on the base material side and the film layer [β] is disposed on the surface layer side; the film thickness of the entire film body is set to 4 μm or more and 30 μm or less; and the film layer [α] and the film layer [β] have predetermined film compositions.
Abstract:
Both a rake face and a flank of an edge tool have a surface structure in which a network of recesses and protuberances surrounded by the recesses are formed, the surface structure having the characteristics described below: (1) there is no solid-solid interface between the surface structure and the interior of the edge tool, (2) the surface structure has a value of a physical property that more easily permits the surface structure to be elastically or plastically deformed than a value of the physical property of the interior of the edge tool, and (3) the protuberances have such shapes that the protuberances are elastically or plastically deformed as the protuberances rub against a workpiece.
Abstract:
Polycrystalline diamond includes cubic diamond and hexagonal diamond, and a ratio of X-ray diffraction peak intensity of a (100) plane of the hexagonal diamond to X-ray diffraction peak intensity for a (111) plane of cubic diamond is not lower than 0.01%. In addition, a present method of manufacturing polycrystalline diamond includes the steps of preparing a non-diamond carbon material having a degree of graphitization not higher than 0.58 and directly converting the non-diamond carbon material to cubic diamond and hexagonal diamond and sintering the non-diamond carbon material, without adding any of a sintering agent and a binder, under pressure and temperature conditions at which diamond is thermodynamically stable.
Abstract:
The invention relates to a cassette for a milling cutter having a cutter carrier and a clamping part, which together constitute a generally rectangular cassette, the cutter carrier and the clamping part being loosely placed on each other and together delimiting a fastening opening for a fastening screw by means of which the cassette can be fastened in a receiver of a milling cutter, the cutter carrier having a seat for a cutting insert. The invention additionally relates to a milling cutter having at least one receiver for a cassette and having at least one such cassette. A gap, S, between the cutter carrier and the clamping part is located below the cutting tip of the cutting insert to prevent chips from being lodged in the gap, S.