EP3898049A1 - Segment d'usinage pour outil d'usinage - Google Patents

Segment d'usinage pour outil d'usinage

Info

Publication number
EP3898049A1
EP3898049A1 EP19828545.4A EP19828545A EP3898049A1 EP 3898049 A1 EP3898049 A1 EP 3898049A1 EP 19828545 A EP19828545 A EP 19828545A EP 3898049 A1 EP3898049 A1 EP 3898049A1
Authority
EP
European Patent Office
Prior art keywords
machining
material particles
hard material
segment
processing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19828545.4A
Other languages
German (de)
English (en)
Inventor
Marcel Sonderegger
Cliff Toldo
Matthias LODES
Stephan Huth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hilti AG
Original Assignee
Hilti AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hilti AG filed Critical Hilti AG
Publication of EP3898049A1 publication Critical patent/EP3898049A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
    • B23D61/02—Circular saw blades
    • B23D61/04—Circular saw blades with inserted saw teeth, i.e. the teeth being individually inserted
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/06—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
    • B24D18/0009—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for using moulds or presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/06—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental
    • B24D5/063—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental with segments embedded in a matrix which is rubbed away during the grinding process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/12—Cut-off wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/06—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental
    • B24D7/063—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental with segments embedded in a matrix which is rubbed away during the grinding process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
    • B28D1/041—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs with cylinder saws, e.g. trepanning; saw cylinders, e.g. having their cutting rim equipped with abrasive particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/12—Saw-blades or saw-discs specially adapted for working stone
    • B28D1/121—Circular saw blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F2005/001—Cutting tools, earth boring or grinding tool other than table ware
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F2005/005—Article surface comprising protrusions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D2203/00—Tool surfaces formed with a pattern

Definitions

  • the present invention relates to a machining segment for a machining tool according to the preamble of claim 1 and a machining tool with such a machining segment according to the preamble of claim 9.
  • Machining tools such as core bits, saw blades, abrasive discs and abrasive chains, include machining segments that are attached to a tubular, disc or ring-shaped base body, the machining segments being connected to the base body by welding, soldering or gluing.
  • machining segments that are used for core drilling are considered as drilling segments, machining segments that are used for sawing, saw segments, machining segments that are used for ablation, removal segments and machining segments that are used for abrasive cutting as abrasive cutting segments designated.
  • Machining segments for core bits, saw blades, abrasive discs and abrasive chains are made from a matrix material and hard material particles, whereby the hard material particles can be statistically distributed or arranged according to a defined particle pattern in the matrix material.
  • the matrix material and the hard material particles are mixed, the mixture is poured into a suitable tool shape and further processed to form the machining segment.
  • a green compact is built up in layers of matrix material, in which the hard material particles are placed in accordance with the defined particle pattern.
  • the processing zone is constructed from a first matrix material and the neutral zone from a second matrix material, which is different from the first matrix material.
  • Machining tools that are designed as a core bit, saw blade, abrasive disc or abrasive chain and are intended for wet machining of concrete materials are only suitable to a limited extent for dry machining of concrete materials.
  • wet machining concrete materials an abrasive concrete sludge is created that supports the machining process and leads to self-sharpening of the machining segments during machining.
  • the matrix material is removed by the abrasive drilling mud and new hard material particles are exposed.
  • no abrasive drilling mud can form that can support the machining process.
  • the hard material particles quickly become dull and the processing rate drops. Due to the lack of concrete sludge, the matrix material wears too slowly and deeper-lying hard material particles cannot be exposed. In known machining tools for wet machining, the matrix material and the hard material particles have similar wear rates.
  • the object of the present invention is to develop a machining segment for a machining tool which enables dry machining of concrete materials, the machining segment being intended to have a high machining rate and the longest possible service life.
  • the machining segment is characterized in that on the upper side at least one of the first hard material particles has a protrusion that is greater than 400 mhi compared to the first matrix material.
  • the “first hard material particles” are the hard material particles of the machining segment according to the invention which have a protrusion on the upper side compared to the first matrix material; Hard material particles that are completely embedded in the first matrix material in the finished machining segment do not fall under the definition of the first hard material particles.
  • a processing segment in which at least one of the first hard material particles has a protrusion of more than 400 mhi compared to the first matrix material is suitable for dry processing concrete materials.
  • a plurality of first hard material particles preferably have an overhang compared to the first matrix material which is greater than 400 mhi. The greater the number of first hard material particles that have a protrusion of more than 400 mhi, the higher the processing rate of the processing tool in the dry processing of concrete materials.
  • All of the first hard material particles preferably have a protrusion, which is greater than 400 mhi, compared to the first matrix material.
  • the first hard material particles preferably have an embedding depth which is greater than 400 mhi.
  • a concrete material is processed using the first hard material particles that are embedded in the first matrix material.
  • the service life of a machining segment depends, among other things, on the fact that the first hard material particles are securely fastened in the first matrix material. With an embedment depth of the first hard material particles of more than 400 mhi, the first hard material particles are securely fastened in the first matrix material. The greater the embedding depth of the first hard material particles in the first matrix material, the better the first hard material particles are fastened in the first matrix material.
  • the protrusion of the first hard material particles of at least 400 mhi with respect to the first matrix material is provided in a front area of the first hard material particles viewed in the direction of rotation of the machining tool.
  • the processing of concrete materials with a processing segment according to the invention takes place in the front area of the first hard material particles viewed in the direction of rotation.
  • the first hard material particles should have a protrusion of more than 400 mhi in comparison to the first matrix material in the front area.
  • a front protrusion of the first hard material particles in the front region of the first hard material particles is preferably different from a rear region of the first hard material particles viewed in the direction of rotation of the machining tool.
  • the processing of concrete materials with a processing segment according to the invention takes place in the front area of the first hard material particles viewed in the direction of rotation. Since the rear area of the first hard material particles viewed in the direction of rotation has only a slight influence on the processing rate, the protrusion of the first hard material particles in the front area and in the rear area can be different.
  • the rear projection of the first hard material particles in the rear region of the first hard material particles is particularly preferably less than 400 mhi.
  • the rear overhang of the first hard material particles can take place with a view to secure fastening of the first hard material particles in the first matrix material.
  • two hard material particles are arranged in the first matrix material, an average particle diameter of the second hard material particles being smaller than an average particle diameter of the first hard material particles.
  • the wear of the first matrix material can be reduced by means of second hard material particles.
  • the second hard particles can be mixed as statistically distributed particles in the first matrix material or the second hard particles are placed in the first matrix material according to a defined second particle pattern. The second hard material particles are placed in particular in the area of the side surfaces of the processing segment.
  • the invention also relates to a machining tool comprising a base body and at least one machining segment according to the invention, which is connected with an underside to the base body of the machining tool.
  • the machining tool is formed as a core drill bit with a tubular base body and a plurality of machining segments.
  • the machining tool is designed as a core drill bit with a tubular base body and an annular machining segment.
  • the processing tool is designed as an annular or disk-shaped saw blade with an annular or disk-shaped base body and a plurality of processing segments.
  • the machining tool is designed as an abrasive disk with a base body and a plurality of machining segments.
  • FIGN. 1A, B two variants of a machining tool designed as a core bit
  • FIGN. 2A, B two variants of a machining tool designed as a saw blade;
  • FIG. 3 shows a processing tool designed as a removal disk;
  • FIG. 4 a processing tool designed as a cut-off chain; and
  • FIGN. 5A-C is a machining segment in a three-dimensional representation (FIG. 5A), in a view on an upper side (FIG. 5B) and in a view on a side surface (FIG. 5C).
  • FIGN. 1A, B show two variants of a machining tool designed as a core bit 10A, 10B.
  • core drill bit 10A is hereinafter referred to as the first core drill bit and the one shown in FIG. 1B core drill bit 10B shown as a second core designated core bit, in addition, the first and second core bit 10A, 10B are summarized under the term "core bit”.
  • the first core drill bit 10A comprises a plurality of machining segments 11A, a tubular body 12A and a tool holder 13A.
  • the machining segments 1 1A which are used for core drilling, are also referred to as drilling segments and the tubular base body 12A is also referred to as a drilling shaft.
  • the drill segments 1 1A are firmly connected to the drill shaft 12A, for example by screwing, gluing, soldering or welding.
  • the second core drill bit 10B comprises an annular machining segment 11B, a tubular base body 12B and a tool holder 13B.
  • the ring-shaped machining segment 1 1 B which is used for core drilling, is also referred to as a drilling ring and the tubular base body 12B is also referred to as a drilling shaft.
  • the drill ring 11 B is firmly connected to the drill shaft 12B, for example by screwing, gluing, soldering or welding.
  • the core drill bit 10A, 10B is connected via the tool holder 13A, 13B to a core drilling device and is driven by the core drilling device in a direction of rotation 14 about an axis of rotation 15 in the drilling operation.
  • the core drill bit 10A, 10B is moved along a feed direction 16 into a workpiece to be machined, the feed direction 16 running parallel to the axis of rotation 15.
  • the core drill bit 10A, 10B produces a drill core and a borehole in the workpiece to be machined.
  • the drill shaft 12A, 12B is in the embodiment of FIGN. 1A, B are formed in one piece and the drilling segments 1 1A and the drilling ring 11 B are firmly connected to the drilling shaft 12A, 12B.
  • the drill shaft 12A, 12B can be formed in two parts from a first drill shaft section and a second drill shaft section, the drill segments 1 1A or the drill ring 11B being firmly connected to the first drill shaft section and the tool holder 13A, 13B firmly connected to the second drill shaft section is.
  • the first and second drill shaft sections are connected to one another via a releasable connecting device.
  • the detachable connecting device is designed, for example, as a plug-and-turn connection, as described in EP 2 745 965 A1 or EP 2 745 966 A1.
  • the formation of the drill shaft as a one-part or two-part drill shaft has no influence on the structure of the drill segments 11A or the drill ring 1 1 B.
  • FIGN. 2A, B show two variants of a machining tool designed as a saw blade 20A, 20B.
  • the in FIG. 2A shown saw blade 20A will be first Saw blade and that in FIG.
  • the saw blade 20B shown in FIG. 2B is referred to as the second saw blade, and the first and second saw blades 20A, 20B are also summarized under the term “saw blade”.
  • the first saw blade 20A comprises a plurality of machining segments 21A, a disk-shaped base body 22A and a tool holder.
  • the machining segments 21 A which are used for sawing, are also referred to as saw segments and the disk-shaped base body 22A is also referred to as the master blade.
  • the saw segments 21A are firmly connected to the master blade 22A, for example by screwing, gluing, soldering or welding.
  • the second saw blade 20B comprises a plurality of machining segments 21B, an annular base body 22B and a tool holder.
  • the processing segments 21 B which are used for sawing, are also referred to as saw segments and the ring-shaped base body 22B is also referred to as a ring.
  • the saw segments 21B are firmly connected to the ring 22B, for example by screwing, gluing, soldering or welding.
  • the saw blade 20A, 20B is connected to a saw via the tool holder and is driven by the saw in a direction of rotation 24 about an axis of rotation 25 in the sawing operation. During the rotation of the saw blade 20A, 20B about the axis of rotation 25, the saw blade 20A, 20B is moved along a feed direction, the feed direction being parallel to the longitudinal plane of the saw blade 20A, 20B. The saw blade 20A, 20B creates a saw slot in the workpiece to be machined.
  • FIG. 3 shows a machining tool designed as a removal disk 30.
  • the removal disc 30 comprises a plurality of machining segments 31, a base body 32 and a tool holder.
  • the processing segments 31, which are used for removal, are also referred to as removal segments and the disk-shaped basic body 32 is also referred to as a pot.
  • the removal segments 31 are firmly connected to the pot 32, for example by screwing, gluing, soldering or welding.
  • the removal disk 30 is connected via the tool holder to a tool device and is driven in the removal mode by the tool device in a direction of rotation 34 about an axis of rotation 35. During the rotation of the removal disk 30 about the axis of rotation 35, the removal disk 30 is moved over a workpiece to be machined, the movement being perpendicular to the axis of rotation 35. The removal disk 30 removes the surface of the workpiece to be machined.
  • FIG. 4 shows a processing tool designed as a cut-off grinding chain 36.
  • the abrasive chain 36 comprises a plurality of processing segments 37, a plurality of link-shaped base bodies 38 and a plurality of connecting links 39.
  • the processing segments 37, which are used for cut-off grinding, are also referred to as cut-off segments and the link-shaped base body 38 are also referred to as drive links.
  • the drive links 38 are connected via the connecting links 39.
  • the links 39 are connected to the drive links 38 via rivet bolts.
  • the rivet bolts allow rotation of the drive links 38 relative to the connecting links 39 about an axis of rotation which runs through the center of the rivet bolts.
  • the machining segments 37 are firmly connected to the drive members 38, for example by screwing, gluing, soldering or welding.
  • the cut-off chain 36 is connected via a tool holder to a tool device and is driven in operation by the tool device in one direction of rotation. During the rotation of the cut-off chain 36, the cut-off chain 36 is moved into a workpiece to be machined.
  • FIGN. 5A-C show a machining segment 41 according to the invention in a three-dimensional representation (FIG. 5A), in a view on an upper side of the machining segment 41 (FIG. 5B) and in a view on a side face of the machining segment 41 (FIG. 5C).
  • the processing segment 41 corresponds in structure and composition to the processing segments 11A, 21 A, 21 B, 31, 37; the machining segment 11 B formed as a drilling ring differs from its machining segment 41 by its annular structure.
  • the machining segments can differ from one another in the dimensions and in the curvatures of the surfaces.
  • the basic structure of the machining segments according to the invention is explained on the basis of the machining segment 41 and applies to the machining segments 11A, 11B of FIGN. 1A, B, for the processing segments 21 A, 21 B of FIGN. 2A, B, for the machining segment 31 of FIG. 3 and for the machining segment 37 of FIG. 4th
  • the processing segment 41 is constructed from a processing zone 42 and a neutral zone 43.
  • the neutral zone 43 is required if the machining segment 41 is to be connected to the base body of a machining tool; in processing segments that are connected to the base body, for example by soldering or gluing, the neutral zone 43 can be omitted.
  • the processing zone 42 is made of a first mat Rix material 44 and first hard material particles 45 and the neutral zone 43 is constructed from a second matrix material 46 without hard material particles.
  • Machining segments according to the invention have a layer with first hard material particles 45, further layers with first hard material particles 45 are not provided.
  • the "first hard material particles” are the hard material particles of the machining segment 41 which, after the production of the machining segment 41, have an overhang on the upper side compared to the first matrix material 44. Hard material particles that are completely embedded in the first machining segment in the first matrix material 44 do not fall under the definition of the first hard material particles.
  • the processing segment 41 is connected to an underside 47 with the main body of the machining tool.
  • the underside of the machining segments is generally flat, whereas the underside of machining segments for sawing has a curvature in order to be able to fasten the machining segments to the curved end face of the annular or disk-shaped base body.
  • the first hard material particles 45 are arranged in accordance with a defined particle pattern in the first matrix material 44 (FIG. 5B) and have a projection Ti on an upper side 48 of the machining segment 41 lying opposite the underside 47 compared to the first matrix material 44.
  • the processing segment 41 comprises a number of 9 first hard material particles 45 which protrude on the top 48.
  • the number of first hard material particles 45 and the defined particle pattern in which the first hard material particles 45 are arranged in the first matrix material 44 are adapted to the requirements of the machining segment 41.
  • the first hard material particles 45 generally originate from a particle distribution which is characterized by a minimum diameter, a maximum diameter and an average diameter.
  • the protrusions of the first hard material particles 45 can vary accordingly.
  • all of the first hard material particles 45 have a protrusion of more than 400 mhi compared to the surrounding first matrix material 44.
  • Bear processing tools according to the invention which are provided for the processing of concrete materials, have a defined direction of rotation.
  • the machining segment 41 is suitable as a drilling segment for the core drill bit 10A.
  • the direction of rotation 14 of the core drill bit 10A defines a front area 51 and a rear area 52.
  • the processing of concrete materials takes place in the front areas 51 of the first hard material particles 45 and the processing rate depends essentially on the size of the protrusion of the first hard material particles in the front Area 51.
  • the first hard material particles 45 have a front projection T front in the front area 51 and a rear projection T back in the rear area, which correspond in the exemplary embodiment.
  • the first hard material particles 45 can have different protrusions T fr0nt on the front and protrusions T back on the rear.
  • the processing segment 41 can be produced, for example, in a three-stage process: in a first stage, a green body is built up from the first matrix material 44 and the first hard material particles 45, in a second stage the green body is compressed into a compact and in a third stage it is Pressling further processed into a processing segment. In the second stage, the green compact is compressed under the action of pressure until the compact essentially has the final geometry of the machining segment.
  • Cold pressing or hot pressing processes are suitable as processes that achieve pressure on the green compact. In the cold pressing process, the green compact is only exposed to pressure, while in the hot pressing process the green compact is exposed not only to the pressure, but also to temperatures of up to approx. 200 ° C. The compact is further processed under the influence of temperature by sintering to form the processing segment.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Manufacturing & Machinery (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Abstract

Segment d'usinage (41) constitué d'un premier matériau de matrice (44) et de premières particules de matériau dur (45), ces premières particules de matériau dur (45) étant agencés dans le premier matériau de matrice (44) selon une configuration de particules définie et au moins une des premières particules de matériau dur (45) faisant saillie sur le côté supérieur (48) par rapport au premier matériau de matrice (44) sur une longueur supérieure à 400 μm.
EP19828545.4A 2018-12-21 2019-12-20 Segment d'usinage pour outil d'usinage Withdrawn EP3898049A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP18215310.6A EP3670050A1 (fr) 2018-12-21 2018-12-21 Segment d'usinage pour un outil d'usinage
PCT/EP2019/025468 WO2020126091A1 (fr) 2018-12-21 2019-12-20 Segment d'usinage pour outil d'usinage

Publications (1)

Publication Number Publication Date
EP3898049A1 true EP3898049A1 (fr) 2021-10-27

Family

ID=65013482

Family Applications (2)

Application Number Title Priority Date Filing Date
EP18215310.6A Withdrawn EP3670050A1 (fr) 2018-12-21 2018-12-21 Segment d'usinage pour un outil d'usinage
EP19828545.4A Withdrawn EP3898049A1 (fr) 2018-12-21 2019-12-20 Segment d'usinage pour outil d'usinage

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP18215310.6A Withdrawn EP3670050A1 (fr) 2018-12-21 2018-12-21 Segment d'usinage pour un outil d'usinage

Country Status (4)

Country Link
US (1) US20220055183A1 (fr)
EP (2) EP3670050A1 (fr)
KR (1) KR20210104036A (fr)
WO (1) WO2020126091A1 (fr)

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Publication number Priority date Publication date Assignee Title
EP3670035A1 (fr) * 2018-12-21 2020-06-24 Hilti Aktiengesellschaft Procédé de fabrication d'un segment de traitement destiné au forage à sec de matériaux de béton
EP3670040A1 (fr) * 2018-12-21 2020-06-24 Hilti Aktiengesellschaft Procédé de fabrication d'un segment de traitement pour le traitement à sec de matériaux de béton
EP3670037A1 (fr) * 2018-12-21 2020-06-24 Hilti Aktiengesellschaft Procédé de fabrication d'un segment de traitement pour le traitement à sec des matériaux de béton
EP3670041A1 (fr) * 2018-12-21 2020-06-24 Hilti Aktiengesellschaft Procédé de fabrication d'un segment de traitement pour le traitement à sec de matériaux de béton
EP3898039A1 (fr) * 2018-12-21 2021-10-27 Hilti Aktiengesellschaft Procédé pour fabriquer une ébauche crue et procédé pour transformer l'ébauche crue en segment d'usinage pour l'usinage à sec de matériaux de béton
WO2020128086A1 (fr) * 2018-12-21 2020-06-25 Hilti Aktiengesellschaft Procédé pour fabriquer une ébauche crue et procédé pour transformer l'ébauche crue en segment d'usinage pour l'usinage à sec de matériaux de béton
EP3670036A1 (fr) * 2018-12-21 2020-06-24 Hilti Aktiengesellschaft Procédé de fabrication d'un segment de traitement pour le traitement à sec de matériaux de béton
EP3670038A1 (fr) * 2018-12-21 2020-06-24 Hilti Aktiengesellschaft Procédé de fabrication d'un segment de traitement pour le traitement à sec de matériaux de béton
USD999265S1 (en) 2020-08-28 2023-09-19 Husqvarna Ab Cutting blade
USD995585S1 (en) 2020-08-28 2023-08-15 Husqvarna Ab Cutting blade
USD994737S1 (en) 2020-08-28 2023-08-08 Husqvarna Ab Cutting blade

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KR20210104036A (ko) 2021-08-24
WO2020126091A1 (fr) 2020-06-25
US20220055183A1 (en) 2022-02-24

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