HITACHI TOOL ENGINEERING ,LTD.
|HITACHI TOOL ENGINEERING ,LTD. Patent applications|
|Patent application number||Title||Published|
|20150174672||MULTI-FLUTE ENDMILL - Multi-flute endmill having a cutting edge rake face formed from a side of a rotation axis to a peripheral side in a radial direction, and having an end cutting edge rake face. A peripheral cutting edge rake face adjacent to the end cutting edge rake face forms a face different from the end cutting edge rake face and serves as the rake face of a corner edge. An intersection between a convex ridge line is located in a boundary between the rake faces of the end cutting edge and peripheral cutting edge. A convex ridge line is located in a boundary between the end cutting edge rake face and a bottom surface of the flute is moved into the side of the rotation axis in the radial direction with respect to a boundary between the flank face of a corner edge and the flank face of the end cutting edge.||06-25-2015|
|20140234582||COVERING MEMBER WITH EXCELLENT SLIDING PROPERTIES - In order to provide a covered member for which unexpected galling is suppressed in the initial stages when the member is used, and which has excellent sliding properties, a covered member has a hard film on the working surface and has excellent sliding properties, said hard film including an A layer, for which an a1 layer comprising a nitride, carbonitride, or oxynitride having 30% or more of chromium in terms of atomic ratio in metal (including metalloid; the same shall apply hereinafter) component, and an a2 layer comprising a nitride, carbonitride, or oxynitride having 60% or more of vanadium in terms of atomic ratio in metal component, are alternately laminated, and a B layer on the upper layer of said A layer and comprising a nitride, carbonitride, or oxynitride having 60% or more of vanadium in terms of atomic ratio in metal component. The film thickness of each a1 layer and a2 layer of the A layer is 50 nm or less, with the film thickness of the a2 layer being greater than that of the a1 layer, and the film thickness of the B layer is 0.1 mum or greater.||08-21-2014|
|20140205390||MULTI-FLUTE ENDMILL - A multi-flute endmill including a cutting edge part having multiple cutting edges and flutes formed between adjacent cutting edges in a rotation direction around the tool axis O. A rake face of each cutting edge is formed from a rake face of an end cutting edge from the tool axis O side to the outer peripheral side of a shank, an adjacent rake face of a corner R edge that forms a surface different from the rake face of the end cutting edge, and an adjacent rake face of a peripheral cutting edge that forms a surface different from the rake face of the corner R edge. A gash is formed between the rake face of the end cutting edge and a flank of an end cutting edge that is adjacent on a forward side thereof in the rotation direction R.||07-24-2014|
|20140170432||SURFACE-MODIFIED, WC-BASED CEMENTED CARBIDE MEMBER, HARD-COATED, WC-BASED CEMENTED CARBIDE MEMBER, AND THEIR PRODUCTION METHODS - The ion bombardment of Cr, etc. onto a surface of a WC-based cemented carbide substrate in a nitrogen-based gas forms a modified phase having a bcc structure on the substrate surface, and a hard coating containing at least Cr formed thereon has high adhesion to the substrate by the modified phase.||06-19-2014|
|20140161545||NEGATIVE CUTTING INSERT, AND INDEXABLE ROTARY CUTTING TOOL, INDEXABLE ROTARY CUTTING TOOL SYSTEM AND CUTTING METHOD USING SUCH CUTTING INSERT - A negative cutting insert having a cutting edge comprising four long-side cutting edge portions for rough cutting and four short-side cutting edge portions for finish cutting, which are connected alternately, thereby being able to conduct rough cutting when attached to a rough-cutting tool body, and finish cutting when attached to a finish-cutting tool body. When such cutting inserts are used for rough or finish cutting and then reattached to a finish-cutting tool body or a rough-cutting tool body, finish or rough cutting can be conducted, thereby using all cutting edges thoroughly.||06-12-2014|
|20140017469||HARD-COATED MEMBER AND ITS PRODUCTION METHOD, AND INDEXABLE ROTARY TOOL COMPRISING IT - A hard-coated member comprising a substrate made of cemented carbide or high-speed steel and a titanium carbonitride layer formed on the substrate by a chemical vapor deposition method, the titanium carbonitride layer comprising first to third layers each having a columnar crystal structure in this order from the side of the substrate, the second layer being smaller than the first layer in carbon concentration, and the third layer being smaller than the second layer in carbon concentration, and an indexable rotary tool comprising it. The first layer is formed by using a starting material gas comprising a TiCl||01-16-2014|
|20140003873||END MILL FOR CUTTING OF HIGH-HARDNESS MATERIALS||01-02-2014|
|20130336731||INDEXABLE BALL END MILL - An indexable ball end mill comprising first to third inserts having arcuate cutting edges detachably attached with first to third screws to first to third seats in a semispherical tip end portion of a tool body; a first threaded hole for the first screw slantingly penetrating a slit-shaped first seat; the first insert having an inclined hole to avoid interference between the first screw and the second and third screws; a hole of the first insert and the first screw having at least partially finished surfaces, so that when the first screw penetrates the first insert attached to the first seat, the first insert is precisely positioned by tight engagement of both finished surfaces.||12-19-2013|
|20130209190||COVER FOR CUTTING TOOL, HOLDER FOR CUTTING, AND CUTTING DEVICE - A cutting tool cover set to a cutting tool which includes a hollow shaft body and at least one insert attached to an end face of the shaft body and cuts by bringing the insert into contact with a work while rotating the shaft body. The cutting tool cover includes: a body portion fixed to a top end portion of the shaft body; and an extension portion extended outward from the circumferential edge of the body portion in the entire circumference of the top end portion of the body portion to cover the surface of the work.||08-15-2013|
|20120114964||COATED-SURFACE SLIDING PART HAVING EXCELLENT COATING ADHESION AND METHOD FOR PRODUCING THE SAME - Provided is a coated-surface sliding part having excellent adhesion of a hard coating, and a method for producing the same part. The coated-surface sliding part is a sliding part wherein a hard coating is formed by physical deposition on the surface of a base material formed from, by mass percent, C 0.5 to 0.8%, Si 0.1 to 1.5%, Mn 0.2 to 1.0%, Cr 8.0 to 13.5%, Mo and/or W 0.5 to 4.0% in terms of (Mo+ 1/2 W), and N 0.01 to 0.1%, with the remainder being Fe and impurities. The physically deposited coating is a titanium metal coating further covered by a diamond-like carbon coating. The method for producing a coated-surface part involves sputtering in order to apply the physically deposited coating, which consists of the titanium metal coating and then the diamond-like carbon coating which forms the surface layer, to the surface of the base material having the aforementioned composition. The base material is preferably subjected to argon gas bombardment prior to application of the physically deposited coating.||05-10-2012|
|20120020749||CARBIDE END MILL AND CUTTING METHOD USING THE END MILL - Provided is a long life carbide end mill which can perform stable cutting in high-efficiency machining such as die machining and parts machining. A cutting method using such an end mill is also provided. When a certain wavy or nicked peripheral cutting edge is considered a reference peripheral cutting edge with reference phases in a pitch of the reference peripheral cutting edge, wherein the distance of each reference phase is an amount corresponding to a value obtained by dividing the pitch of the nicks or waveform of each peripheral cutting edge by the number of the cutting edges; and the phase of at least one of the remaining peripheral cutting edges is deviated in the direction of the tool axis from the corresponding reference phase by an amount corresponding to 5% or less (excluding 0%) of the pitch.||01-26-2012|
|20100215912||HARD-COATED MEMBER, AND ITS PRODUCTION METHOD - The hard-coated member of the present invention having a compression-stress-loaded hard coating having a thickness of 5 μm or more, the hard coating having a face-centered cubic structure having a composition represented by (Me||08-26-2010|
Patent applications by HITACHI TOOL ENGINEERING ,LTD.