Walter AG Patent applications |
Patent application number | Title | Published |
20160053372 | Tool having CVD coating - A tool having a base body of carbide, cermet, ceramic, steel or high speed steel and a single-layer or multi-layer wear-protection coating applied thereto in a CVD process, wherein the wear-protection coating has at least one Ti | 02-25-2016 |
20150336188 | BELL-SHAPED CUTTER - Bell-shaped milling cutter for producing preferably profiled, arcuate grooves, has a main body in the form of a circular disk and a plurality of cutting edge carriers which extend substantially perpendicularly to the plane of the main body and which are arranged in succession in the peripheral direction along a circular path about the center of the main body and are mounted releasably to the main body. To provide a bell-shaped milling cutter having the features set out in the opening part of this specification, which permits simplified and less expensive production of arcuate grooves without having to forego the precise arrangement and orientation of the cutting bits of the known bell-shaped milling cutters, provided at the main body are positioning devices which permit mounting of the cutting edge carriers in a plurality of mutually different radial spacings on the main body. | 11-26-2015 |
20150314378 | TWIST DRILL - A twist drill has a shaft and a flute portion, which extends between a drill tip and the shaft and has at least two flutes, which run helically around it at an angle of twist, are separated from one another by two webs and have a land extending between the flutes on the circumference of the flute portion. In order to provide a twist drill that has the features mentioned at the beginning, has better lubrication of the round bevels, less wear, improved guidance and improved concentricity, at least two round bevels that are spaced apart from one another are provided on each land and extend on the land at an angle of inclination in relation to the drill axis that is greater than the angle of twist but less than 90°. | 11-05-2015 |
20150232978 | Tool with TiAlCrSiN PVD coating - Tool with main body made of carbide, cermet, ceramic, steel or high-speed steel and multi-layer wear-protection coating applied on the main body using a PVD process. The wear-protection coating comprises at least one layer (A) of Ti | 08-20-2015 |
20150211105 | TiAlN-COATED TOOL - Tool comprising a base body made of hard metal, cermet, ceramics, steel or high-speed steel and a single-layer or multi-layer anti-wear protective coating applied thereon in the PVD process, at least one layer of said anti-wear protective coating being a titanium-aluminium-nitride layer, Ti | 07-30-2015 |
20150117970 | INDEXABLE INSERT FOR SHOULDER MILLING CUTTER AND SHOULDER MILLING CUTTER WITH MOUNTING CUTOUTS FOR INDEXABLE INSERTS - Indexable insert has a non-rectangular parallelogram shape with nearly rhombic basic shape and an imaginary intermediate plane spanned by four corners of an imaginary rhombus with sides running at a distance away from the upper side and the underside along the peripheral lateral surface in a plane such that each equivalent cutting edge has the same variation of distance and angle from the intermediate plane. Two diagonally opposing corners of both the upper side and the underside each have a greater distance from the intermediate plane than do the respective diagonally opposing corners of the upper side and the underside lying therebetween, and the diagonally opposing corners of the upper side and of the underside are shifted parallel to the intermediate plane and, as viewed in a plan view onto the intermediate plane, in mutually opposite directions away from the associated diagonals of the rhombus spanning the intermediate plane. | 04-30-2015 |
20150086282 | Insert and Clamping Holder Having Four-Point Contacts - Clamping holder for cutting inserts has a rigid holding part and a clamping finger elastically movable with respect to the rigid holding part that define opposite sides of a substantially U-shaped recess for receiving a cutting insert. One of these two sides has first and second spaced-apart contact points for one side of a cutting insert and the opposite side has a third contact point. A stop for limiting the insertion depth of the cutting inset into the recess is provided inside the recess. That side of the cutting insert that has the third contact point is additionally assigned the stop, which is configured such that it simultaneously acts as a further, fourth lateral contact point opposite the first and second contact points and as a stop for limiting the insertion depth of the cutting insert. | 03-26-2015 |
20140193637 | Tool with chromium-containing functional layer - Cutting tool has a substrate and a multilayer coating deposited by PVD. The coating comprises a base layer of one or more identical or different layers of a nitride or carbonitride which contains at least aluminium (Al) and a chromium-containing, oxidic functional layer. Attachment of the chromium-containing functional layer is improved by an intermediate layer of one or more oxides or oxide nitrates of the metals Al, Cr, Si, and/or Zr provided between the base layer and the functional layer. The intermediate layer has a cubic structure and the chromium-containing functional layer is selected from chromium oxide (Cr | 07-10-2014 |
20140193624 | Cutting Insert and Method for Production Thereof - Cutting insert made of hard metal, cermet or ceramic substrate body with multi-layer coating applied thereto by CVD methods. The coating has a total thickness of 5 to 40 μm and, starting from the substrate surface, has one or more hard material layers, an alpha aluminium oxide (α-Al | 07-10-2014 |
20140193622 | Grain Boundary Engineered Alpha-Alumina Coated Cutting Tool - Cutting tool insert has a substrate and a coating with a total thickness of 5 to 40 μm, the coating being one or more refractory layers of which at least one layer is an α-Al | 07-10-2014 |
20140173996 | Sulfur Containing Alpha-Alumina Coated Cutting Tool - Cutting tool insert has a substrate and a coating of one or more refractory layers of which at least one layer is an α-Al | 06-26-2014 |
20140147221 | Target For ARC Processes - A target for the deposition of mixed crystal layers with at least two different metals on a substrate by means of arc vapor deposition (arc PVD), wherein the target includes at least two different metals. To produce mixed crystal layers which are as free as possible of macroparticles (droplets) according to the invention at least the metal with the lowest melting point is present in the target in a ceramic compound, namely as a metal oxide, metal carbide, metal nitride, metal carbonitride, metal oxynitride, metal oxycarbide, metal oxycarbonitride, metal boride, metal boronitride, metal borocarbide, metal borocarbonitride, metal borooxynitride, metal borooxocarbide, metal borooxocarbonitride, metal oxoboronitride, metal silicate or mixture thereof, and at least one metal different from the metal with the lowest melting point is present in the target in elemental (metallic) form. | 05-29-2014 |
20140050544 | Device and Method for Generating Microstructures in Cylindrical Surfaces - Tool and method for generating microstructures within cylindrical surfaces with a higher degree of efficiency, thereby allowing to provide cylindrical surfaces with a corresponding microstructure in much shorter cycle time. Cutting elements of the tool are arranged within seats to be radially displaceable in said seats during rotation of said tool body. The cutting elements are radially displaceable at least between two different radial positions, namely a radially retracted and a radially extended position. The cutting elements can be evenly distributed about the circumference of the tool at the same radial distance such that the tips of the cutting teeth and also the seats define a common cylindrical envelope surface the axis of which coincides with the axis of the tool body. | 02-20-2014 |
20140050542 | Indexable Cutting Insert and Indexable Cutting Insert Holder - Indexable cutting insert with a plate-like main body having two parallel main surfaces and a peripheral surface connecting the two main surfaces and with a plurality of sections angled with respect to one another, wherein four cutting edges that extend transversely to the main surfaces are provided on the peripheral surface at the transition to sections, that are angled with respect to one another, of the peripheral surface, and wherein the position of the cutting edges defines a quadrilateral in the plan view of the main surfaces. Fixing with more favourable leverages and permanently more precise positioning of the cutting edges are provided by the quadrilateral having in each case two short and two long sides and cutting edges oriented in each case in opposite directions in the peripheral direction at adjacent corners and oriented in each case in the same direction at diagonally opposite corners of the quadrilateral. | 02-20-2014 |
20130216804 | Cutting Tool with Multi-Layer Coating - The invention relates to a cutting tool comprising a main part and a multilayer coating applied thereon. A first layer A made of a hard material is applied on the main part, said hard material being selected from titanium aluminum nitride (TiAlN), titanium aluminum silicon nitride (TiAlSiN), chromium nitride (CrN), aluminum chromium nitride (AlCrN), aluminum chromium silicon nitride (AlCrSiN), and zirconium nitride (ZrN), and a second layer B made of silicon nitride (Si3N4) is applied directly over the first layer A. | 08-22-2013 |
20130209834 | PVD Hybrid Method for Depositing Mixed Crystal Layers - The present invention concerns a method for depositing mixed crystal layers with at least two different metals on a substrate by means of PVD methods. To provide a method of depositing mixed crystal layers with at least two different metals on a substrate by means of PVD methods, which gives mixed crystal layers which are as free as possible of macroparticles (droplets) and which have a proportion as high as possible of a desired crystalline phase and which are highly crystalline, it is proposed according to the invention that deposition of the mixed crystal layer is effected with simultaneous application of i) the cathode sputtering method of dual magnetron sputtering or high power impulse magnetron sputtering and ii) arc vapour deposition. | 08-15-2013 |
20110311805 | CUTTING TOOL - The invention relates to a cutting tool having a substrate base body and a single or multi-layered coating attached thereupon, wherein at least one layer of the coating is a metal oxide layer produced in the PVD process or in the CVD process and the metal oxide layer has a grain structure wherein there is structural disorder within a plurality of the existing grains that are characterized in that in electron diffraction images of the grains, point-shaped reflections occur up to a maximum lattice spacing d | 12-22-2011 |
20110268514 | PVD COATED TOOL - The invention concerns a cutting tool comprising a main body and a multi-layer coating applied thereto. To provide improved cutting tools which have increased resistance to comb cracking, tribochemical wear and cratering caused thereby the main body comprises a hard metal which includes 5 to 8% by weight of Co, 0 to 2% by weight of TaC, 0 to 1% by weight of NbC and 89 to 95% by weight of WC with a mean grain size of 1 to 5 μm, and the coating has a first layer of TiAlN having a layer thickness of 1 to 5 μm, and a second layer of aluminium oxide having a layer thickness of 1 to 4 μm, wherein the coating further additionally includes on the second layer of aluminium oxide n alternately mutually superposedly applied layers of TiAlN and layers of aluminium oxide respectively having a layer thickness of 0.1 to 0.5 μm, wherein n relates to each individual layer and is an even number of 0 to 10, and wherein the total layer thickness of the coating is 2 to 16 μm and the coating is produced in the PVD process. | 11-03-2011 |
20110182681 | TOOL HAVING A METAL OXIDE COATING - The invention concerns a cutting tool comprising a base body and a multi-layer coating applied thereto, which, possibly besides further layers, includes a plurality of main layers A and intermediate layers B applied alternately directly one upon the other, wherein the main layers A and the intermediate layers B are respectively metal oxide layers produced by the PVD process, the thickness of the main layers A is in the range of 4 nm to 1 μm, and the thickness of the intermediate layers B is in the range of 2 nm to 50 nm, wherein the ratio of the thicknesses of the intermediate layers B to the thicknesses of the main layers A is in the range of 1:2 to 1:100. | 07-28-2011 |
20110045283 | ABRASION-BLASTED CUTTING INSERT AND METHOD - The invention relates to a cutting insert and a method for its production, in which a hard-metal, cermet, or ceramic substrate body is coated by means of a PVD, PCVD or CVD method with a single- or multi-layer coating of carbides, nitrides, oxides, carbonitrides, oxinitrides, oxicarbides, oxicarbonitrides, borides, boron nitrides, boron carbides, boron carbonitrides, boron oxinitrides, boron oxocarbides, boron oxocarbonitrides of the elements of groups IVa to VIIa of the periodic table and/or of aluminium and/or mixed-metal phases and/or phase mixtures of the above-named compounds and, after the coating, the substrate body is subjected to dry or wet abrasion blasting using a granular blasting abrasive. In order to provide a cutting insert with improved wear resistance and improved cutting properties, in particular improved ridge-type crack resistance and/or tensile capacity, according to the invention the hardness of the abrasive is lower than the hardness of the outermost layer of the coating or the hardness of the abrasive is higher than the hardness of the outermost layer of the coating and a layer the hardness of which is higher than the hardness of the abrasive is arranged below the outermost sheet, wherein at least portions of the layer(s) arranged above the layer the hardness of which is higher than the hardness of the abrasive are abraded by the abrasion blasting, the total layer thickness of the coating is at most 40 μm, the abrasion blasting takes place at a blasting pressure of 1 bar to 10 bar and is carried out for a period which is sufficient for 10 MPa<Δ S | 02-24-2011 |
20100189978 | TOOL WITH MULTI-LAYERED METAL OXIDE COATING - The present invention relates to a cutting tool having a base body and a multilayered coating applied thereto, wherein at least two layers of the multilayered coating arranged one on top of the other contain, or consist of, metal oxide of the same metal or of different metals. In order to create cutting tools which are better than those of the prior art, it is proposed according to the invention that the at least two metal oxide layers arranged one on top of the other be produced successively by different PVD-processes, selected from i) reactive magnetron sputtering (RMS), ii) arc vapour deposition (arc-PVD), iii) ion plating, iv) electron beam vapour deposition and v) laser deposition, wherein modifications of the respective processes i) to v) do not constitute different PVD-processes. | 07-29-2010 |