Patents Assigned to Walter AG
  • Patent number: 12276016
    Abstract: A coated cutting tool includes a substrate with a coating including a (Ti,Al)N layer having an overall composition (TixAl1-x)N, 0.34?x?0.65. The (Ti,Al)N layer contains columnar (Ti,Al)N grains with an average grain size of from 10 to 100 nm. The (Ti,Al)N layer also includes lattice planes of a cubic crystal structure. The (Ti,Al)N layer shows a pattern in electron diffraction analysis, wherein there is a diffraction signal existing, which is shown as a peak (P) in an averaged radial intensity distribution profile having its maximum within a scattering vector range of from 3.2 to 4.0 nm?1, the full width half maximum (FWHM) of the peak (P) being from 0.8 to 2.0 nm?1.
    Type: Grant
    Filed: December 17, 2020
    Date of Patent: April 15, 2025
    Assignee: WALTER AG
    Inventors: Veit Schier, Wolfgang Engelhart
  • Patent number: 12233468
    Abstract: An indexable cutting insert, arranged for being mounted in an insert seat of a tool body of a shoulder milling tool, includes a triangular top surface, a triangular bottom surface, and three circumferential surfaces extending between the top and bottom surface. On each side of the cutting insert an individual one of the three circumferential surfaces extends along an edge of the triangular top surface and along an edge of the triangular bottom surface. The cutting insert includes at each of the top and bottom surfaces three cutting corners, three main cutting edges and three minor cutting edges. Each cutting corner connects a main cutting edge and a minor cutting edge. Each of the cutting corners, each of the main cutting edges and each of the minor cutting edges are provided at an intersection between the top surface or the bottom surface and one of the circumferential surface.
    Type: Grant
    Filed: June 24, 2020
    Date of Patent: February 25, 2025
    Assignee: Walter AG
    Inventor: Alexander Jung
  • Patent number: 12188115
    Abstract: A coated cutting tool includes a substrate having a coating including a layer of aluminium nitride, which has a phase of aluminium nitride (P). The phase of aluminium nitride (P) has an electron diffraction pattern, wherein up to a scattering vector of q=8.16 nm?1 there is at least one additional reflection (R) to any reflection found in the cubic and hexagonal aluminium nitride diffraction patterns.
    Type: Grant
    Filed: May 5, 2020
    Date of Patent: January 7, 2025
    Assignee: Walter AG
    Inventors: Veit Schier, Johannes Kümmel, Wolfgang Engelhart
  • Patent number: 12179271
    Abstract: A press tool and a method for forming a cutting insert green body. The press tool includes a first and a second core rod. Both core rods are movably arranged along an axis. When both core rods are in a press position, their respective contact surfaces contact each other and when both the first and second core rods are in a release position, their respective contact surfaces are separated. The first core rod includes a base body having a forwardly facing abutment surface and a piston having a shaft and a head. The piston is movable to a plurality of extended positions and to a retracted position, in which the abutment surface of the head abuts against the abutment surface of the base body. When both the first core rod and the second core rod are in their respective press positions, the piston is in the retracted position.
    Type: Grant
    Filed: December 21, 2020
    Date of Patent: December 31, 2024
    Assignee: Walter AG
    Inventor: Manuel Presnitz
  • Patent number: 12172224
    Abstract: The present invention relates to a thread former for manufacturing an internal thread in a metal workpiece. The thread former includes a forming section having a common central axis of rotation, wherein the forming section has a plurality of lubrication grooves extending parallel to the axis of rotation. The forming section includes a plurality of ridge sections extending along a circumference of the forming section, the plurality of ridge sections being arranged for forming the internal thread in the metal workpiece, and wherein, in a circumferential direction, each two of the plurality of ridge sections are separated by one of the plurality of lubrication grooves. At least the one of the lubrication grooves, when projected into a projection plane perpendicular to the axis of rotation, is asymmetrical with respect to any radius intersecting a surface of the lubrication groove.
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: December 24, 2024
    Assignee: Walter AG
    Inventor: Jurgen Birk
  • Patent number: 12109624
    Abstract: A turning tool includes a tool body having an insert seat that accommodates a cutting insert and a mounting means for mounting the cutting insert at the tool body. A guiding block is movably mounted between a first position and a second position at the tool body. A fluid passage is arranged to eject a jet of cooling fluid from an inlet end to at least one outlet onto a clearance surface associated with a cutting edge of the cutting insert. When the guiding block is in the first position the jet of cooling fluid is ejected along a first line and when the guiding block is in the second position the jet of cooling fluid is ejected along a second line, wherein the first line and the second line have different orientations and intersect each other at a position in a downstream direction from the outlet.
    Type: Grant
    Filed: August 20, 2019
    Date of Patent: October 8, 2024
    Assignee: WALTER AG
    Inventor: Hubert Burkle
  • Patent number: 12037675
    Abstract: A method for producing a coated cutting tool includes depositing a 0.5-10 ?m nitride layer, which is a nitride of one or more of Ti, Zr, Hf, V, Ta, Nb, Si, Cr and Al, onto a substrate followed by depositing Al or Al+Me, further followed by depositing a 0.1-5 ?m oxide layer being an (AlaMe1-a)2O3 layer, 0.05?a?1, wherein Me is one or more of Ti, Mg, Ag, Zr, Si, V, Fe, Hf, B and Cr, said layers being deposited by magnetron sputtering. Also, a coated cutting tool including a substrate with a coating having the nitride layer and oxide layer. The coating has inclusions of (Al,Me,O) in the oxide layer at the interface between the nitride layer and the oxide layer, and/or a layer of (Al,Me,O) situated in between the nitride layer and the oxide layer.
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: July 16, 2024
    Assignee: Walter AG
    Inventors: Veit Schier, Dominic Diechle
  • Patent number: 11548078
    Abstract: A drilling tool includes a tool body having a center axis defining a longitudinal direction of the drilling tool. The tool body has an axially forward end and an axially rearward end, the distance in the longitudinal direction between the forward end and the rearward end defining a length of the drilling tool. At least two indexable cutting inserts are arranged at the axially forward end, a first indexable cutting insert being arranged at a radially inner position and a second indexable cutting insert being arranged at a radially outer position. The tool body includes a first flute portion extending axially rearward from the first indexable cutting insert and a second flute portion extending axially rearward from the second indexable cutting insert. The first flute portion transitions into the second flute portion at an axially forward transition area of the tool body, thereby forming only one flute of the tool.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: January 10, 2023
    Assignee: Walter AG
    Inventor: Florian Baur
  • Patent number: 11365483
    Abstract: A coated cutting tool has a substrate of cemented carbide, cermet, ceramics, steel or cubic boron nitride and a multi-layered wear resistant coating deposited thereon has a total thickness from 4 to 25 ?m. The multi-layered wear resistant coating includes a TiAlCN layer (a) represented by the formula Ti1-xAlxCyNz with 0.2?x?0.97, 0?y?0.25 and 0.7?z?1.15 deposited by CVD, and a ?-Al2O3 layer (b) of kappa aluminium oxide deposited by CVD immediately on top of the TiAlCN layer (a). The Ti1-AlxCyNz layer (a) has an overall fiber texture with the {111} plane growing parallel to the substrate surface and a {111} pole figure, measured over an angle range of 0°???80° and the ?-Al2O3 layer (b) has an overall fiber texture with the {002} plane growing parallel to the substrate surface and a {002} pole figure, over an angle range of 0°???80°.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: June 21, 2022
    Assignee: WALTER AG
    Inventors: Dirk Stiens, Thorsten Manns
  • Patent number: 11326248
    Abstract: A coated cutting tool including a substrate and a single layer or multi-layer hard material coating is provided. The substrate is selected from cemented carbide, cermet, ceramics, cubic boron nitride (cBN), polycrystalline diamond, steel or high-speed steel. The hard material coating includes at least one layer of gamma-Al2O3, exhibiting particularly high hardness and reduced Young's modulus. The gamma-Al2O3 layer of the coated cutting tool is obtainable by means of a reactive magnetron sputtering process using at least one Al target, wherein the deposition is carried out using a reaction gas composition of argon (Ar) and oxygen (O2) at a total reaction gas pressure within the range from at least 1 Pa to at most 5 Pa, at an O2 partial pressure within the range from 0.001 Pa to 0.1 Pa, and at a temperature within the range from 400° C. to 600° C.
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: May 10, 2022
    Assignee: WALTER AG
    Inventors: Dominic Diechle, Veit Schier
  • Patent number: 11313028
    Abstract: A coated cutting tool and a process for the production thereof is provided. The coated cutting tool includes a substrate and a hard material coating, the substrate being selected from cemented carbide, cermet, ceramics, cubic boron nitride, polycrystalline diamond or high-speed steel. The hard material coating includes a (Ti,Al)N layer stack of alternately stacked (Ti,Al)N sub-layers. The layer stack has an overall atomic ratio of Ti:Al within the (Ti,Al)N layer stack within the range from 0.33:0.67 to 0.67:0.33, a total thickness of the (Ti,Al)N layer stack within the range from 1 ?m to 20 ?m, each of the individual (Ti,Al)N sub-layers within the (Ti,Al)N layer stack of alternately stacked (Ti,Al)N sub-layers having a thickness within the range from 0.5 nm to 50 nm, each of the individual (Ti,Al)N sub-layers within the (Ti,Al)N layer stack of alternately stacked (Ti,Al)N sub-layers being different in respect of the atomic ratio Ti:Al than an immediately adjacent (Ti,Al)N sub-layer, and other characteristics.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: April 26, 2022
    Assignee: Walter AG
    Inventors: Veit Schier, Wolfgang Engelhart
  • Patent number: 11286570
    Abstract: A coated cutting tool includes a substrate and a coating. The coating has an inner layer of 4-14 ?m thick Ti1-xAlxN, an intermediate layer of 0.05-1 ?m TiCN and at least one outer layer of 1-9 ?m ?-Al2O3. The ?-Al2O3 layer exhibits an X-ray diffraction pattern, as measured using CuK? radiation and theta-2theta scan. A texture coefficient TC(hkl) is defined according to Harris formula, wherein the (hkl) reflections used are (0 2 4), (1 1 6), (3 0 0) and (0 0 12), I(hkl)=measured intensity (peak intensity) of the (hkl) reflection, I0(hkl)=standard intensity according to ICDD's PDF-card No. 00-042-1468, n=number of reflections used in the calculation, and 3<TC(0 0 12)<4.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: March 29, 2022
    Assignee: WALTER AG
    Inventors: Dirk Stiens, Thorsten Manns
  • Patent number: 11247275
    Abstract: A cutting tool includes a base body and a coating applied thereto. For providing a cutting tool, having both a hard coating that also exhibits fracture toughness, the coating includes at least one oxide layer deposited in the PVD process, consisting of at least 10 alternating single coats of Al2O3 and (Alx, Me1-x)2O3, where 0<x<1, wherein Me is selected from one or more of the group of Si, Ti, V, Zr, Mg, Fe, B, Gd, La and Cr.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: February 15, 2022
    Assignee: WALTER AG
    Inventors: Veit Schier, Dominic Diechle
  • Patent number: 11247276
    Abstract: A coated cutting tool includes a substrate of cemented carbide, cermet, ceramics, steel or cubic boron nitride and a multi-layered wear resistant coating. The multi-layered wear resistant coating has a total thickness from 5 to 25 ?m and includes refractory coating layers deposited by chemical vapour deposition (CVD) or moderate temperature chemical vapour deposition (MT-CVD). The multi-layered wear resistant coating has at least one pair of layers (a) and (b), with layer (b) being deposited immediately on top of layer (a). Layer (a) is a layer of aluminium nitride having hexagonal crystal structure (h-AlN) and a thickness from 10 nm to 750 nm. Layer (b) is a layer of titanium aluminium nitride or titanium aluminium carbonitride represented by the general formula Ti1-xAlxCyNz with 0.4?x?0.95, 0?y?0.10 and 0.85?z?1.15, having a thickness from 0.5 ?m to 15 ?m, and at least 90% of the Ti1-xAlxCyNz of layer (b) has a face-centered cubic (fcc) crystal structure.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: February 15, 2022
    Assignee: Walter AG
    Inventors: Dirk Stiens, Thorsten Manns
  • Patent number: 11104987
    Abstract: A coated cutting tool includes a substrate of cemented carbide, cermet, cBN, ceramics or HSS and a coating of a nitride layer, which is a High Power Impulse Magnetron Sputtering (HIPIMS) deposited layer of a nitride of one or more of Ti, Zr, Hf, V, Ta, Nb, Cr, Si and Al, and a HIPIMS-deposited oxide layer being an (AlaMe1?a)2O3 layer, 0.05?a?1, wherein Me is one or more of Ti, Mg, Ag, Zr, Si, V, Fe, Hf, B and Cr. The oxide layer is situated above the nitride layer. Also, a method is disclosed for producing a coated cutting tool having the nitride layer and oxide layer, the nitride layer and the oxide layer being deposited by a HIPIMS process.
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: August 31, 2021
    Assignee: WALTER AG
    Inventors: Veit Schier, Ulrich Albers, Dominic Diechle
  • Patent number: 11104986
    Abstract: A metal cutting tool includes a main body made of cemented carbide, cermet, ceramic, steel or high-speed steel, and a multi-layer wear protection coating. The wear protection coating includes a lower layer having an overall composition of Tim Al(1-m) N with 0.25<m<0.55 and an overall thickness of 500 nm to 3 ?m. The lower layer has 50 to 600 pairs of alternately stacked sub-layers in a sequence (A-B-A-B- . . . ) and having a composition Tia Al(1-a) N with 0.45?a?0.55 and a thickness of 1 nm to 10 nm. The upper layer has 30 to 400 triples of alternately stacked sub-layers in a sequence (C-D-E-C-D-E- . . . ). The sub-layers of the upper layer have a composition Tix AlySizN with x+y+z=1 and 0.20?x?0.45, 0.20?y?0.45 and 0.20?z?0.45 and a thickness of 1 nm to 10 nm.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: August 31, 2021
    Assignee: WALTER AG
    Inventor: Ulrich Albers
  • Patent number: 10662524
    Abstract: A tool having includes a base body of cemented carbide, cermet, ceramics, steel or high-speed steel and a single-layer or multi-layer wear protection coating deposited thereon by CVD process and having a thickness within the range of from 2 ?m to 25 ?m. The wear protection coating has at least a Ti1-xAlxCyNz layer with 0.40?x?0.95, 0?y?0.10 and 0.85?z?1.15 having a thickness in the range of from 1 ?m to 16 ?m and having >85 vol-% face-centered cubic (fcc) crystal structure. The Ti1-xAlxCyNz layer includes precipitations of Ti1-oAloCpNq at the grain boundaries of the Ti1-xAlxCyNz crystallites have a higher Al content than inside the crystallites, wherein 0.95?o?1.00, 0?p?0.10, 0.85?q?1.15 and (0?x)?0.05.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: May 26, 2020
    Assignee: Walter AG
    Inventors: Dirk Stiens, Thorsten Manns
  • Patent number: 10655211
    Abstract: A tool includes a base body of hard metal, cermet, ceramics, steel or high speed steel and a multi-layer wear protection coating deposited thereon by a PVD process. The wear protection coating has a first coat deposited on the base body having a composition of TiaAl(1-a)N, wherein 0.4?a?0.6, and a coating thickness of 0.5 ?m to 4 ?m, and a second coat deposited on the first coat. The second coat includes a sequence of 10 to 80 first and second layers alternatingly arranged one on top of each other. Each of the first and second layers has a thickness of 5 to 100 nm. Each first layer includes nitrides of the elements Ti, Al, Cr and Si, and each second layer has a composition of TixAl(1-x)N, wherein 0.4?x?0.6. The first and second coats have up to 10 at-% of further metals, B, C and/or O as impurities in each layer.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: May 19, 2020
    Assignee: Walter AG
    Inventors: Ulrich Albers, Veit Schier
  • Patent number: 10619236
    Abstract: A solid carbide milling cutter has a substrate of hard metal and a multi-layer coating deposited at least to surface regions that contact a workpiece during a milling operation. The multi-layer coating includes a single-layer or a multi-layer functional layer deposited directly on the substrate surface and a single-layer or a multi-layer covering layer deposited on the functional layer. The functional layer has one or more layers of TixAl1-xN with 0.3?x?0.55. The covering layer has one or more layers of ZrN. The functional layer and the covering layer are deposited by HIPIMS, wherein during the deposition of the functional layer power pulses are applied to each sputtering target consisting of material to be deposited, which power pulses transfer an amount of energy to each sputtering target that exceeds a maximum power density in the pulse of ?500 W/cm2.
    Type: Grant
    Filed: February 11, 2016
    Date of Patent: April 14, 2020
    Assignee: WALTER AG
    Inventors: Veit Schier, Wolfgang Engelhart
  • Patent number: 10487388
    Abstract: 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 TiaAl(1?a)N where 0.33?a?1 with layer thickness of 20 nm to 3 ?m and at least one layer (B) comprising a sequence of at least 4 sub-layers arranged alternately in a stack, of TibSi(1?b)N and AlcCr(1?c)N where 0.70?b?0.98 and 0.3?c?0.75 with sub-layer thickness of 0.5 nm to 15 nm, and optionally further comprises a layer (C) of TidSi(1?d)N where 0.70?d?0.98 with layer thickness of 50 nm to 1 ?m. The wear-protection coating can have further carbide layers and layers (A), (B) and (C) can contain up to 10 at. % of other metals, B, C and/or O per layer, depending on the process.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: November 26, 2019
    Assignee: Walter AG
    Inventor: Veit Schier