EP1784268A2 - Schaltbare schneideinsätze und herstellungsverfahren dafür - Google Patents

Schaltbare schneideinsätze und herstellungsverfahren dafür

Info

Publication number
EP1784268A2
EP1784268A2 EP05779782A EP05779782A EP1784268A2 EP 1784268 A2 EP1784268 A2 EP 1784268A2 EP 05779782 A EP05779782 A EP 05779782A EP 05779782 A EP05779782 A EP 05779782A EP 1784268 A2 EP1784268 A2 EP 1784268A2
Authority
EP
European Patent Office
Prior art keywords
cutting
cutting insert
tips
superhard material
insert
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Withdrawn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
EP05779782A
Other languages
English (en)
French (fr)
Other versions
EP1784268A4 (de
Inventor
Clas E. Sjogren
Mikael Lindholm
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.)
Sandvik Intellectual Property AB
Original Assignee
Sandvik Intellectual Property AB
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
Priority claimed from US10/918,391 external-priority patent/US7360972B2/en
Application filed by Sandvik Intellectual Property AB filed Critical Sandvik Intellectual Property AB
Publication of EP1784268A2 publication Critical patent/EP1784268A2/de
Publication of EP1784268A4 publication Critical patent/EP1784268A4/de
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B22F5/003—Articles made for being fractured or separated into parts
    • 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
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/007—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor for internal turning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/04—Cutting-off tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
    • B23B27/141—Specially shaped plate-like cutting inserts, i.e. length greater or equal to width, width greater than or equal to thickness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/56—Button-type inserts
    • E21B10/567—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
    • E21B10/573—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts characterised by support details, e.g. the substrate construction or the interface between the substrate and the cutting element
    • 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
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • 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
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/20—Top or side views of the cutting edge
    • B23B2200/201—Details of the nose radius and immediately surrounding area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2215/00—Details of workpieces
    • B23B2215/68—Threaded components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2226/00—Materials of tools or workpieces not comprising a metal
    • B23B2226/12—Boron nitride
    • B23B2226/125—Boron nitride cubic [CBN]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2226/00—Materials of tools or workpieces not comprising a metal
    • B23B2226/18—Ceramic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2226/00—Materials of tools or workpieces not comprising a metal
    • B23B2226/31—Diamond
    • B23B2226/315—Diamond polycrystalline [PCD]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2240/00—Details of connections of tools or workpieces
    • B23B2240/08—Brazed connections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2240/00—Details of connections of tools or workpieces
    • B23B2240/11—Soldered connections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2240/00—Details of connections of tools or workpieces
    • B23B2240/21—Glued connections
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
    • C22C2026/005—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes with additional metal compounds being borides

Definitions

  • a stacked structure comprising a first layer of hard backing material and a layer of superhard cutting material superimposed onto the backing layer. Cutting tips are then cut from this stacked structure and brazed to a cutting insert body, typically at a comer thereof.
  • U.S. Patent No. 5,183,362 to Kuroyama et al. the disclosure of which is incorporated herein by reference, in its entirety, describes such a technique.
  • a second technique for forming indexable cutting inserts involves providing a blank or substrate having pockets formed therein which are filled with superhard material, then subjecting the blank to a sintering operation which bonds the superhard material to the substrate.
  • the present invention provides a cutting insert which includes: a cutting insert body having a plurality of cavities formed therein; a plurality of cutting tips, each of the plurality of cutting tips disposed in a respective cavity, the cutting tips having a geometry that provides a mechanical retention or -A- lock when inserted into the cavities of the cutting insert body, said geometry including a generally trapezoidal anchor portion with its base substantially flat and spaced away from the cutting edge of the body, and further comprising a braze joint between each of the cutting tips and the cutting insert body.
  • Figure 6 is a top view of an indexable cutting insert formed according to the present invention.
  • Figures 1 IA, B, C, D and E are top views of other inserts formed according to the present invention.
  • Figures 12A and B are side cross-sectional view and top view, respectively, of a drill formed according to the present invention.
  • Figures 13 A, B and C are side cross-sectional views of drill configurations formed according to the present invention.
  • Figure 14 is a representation of an insert which can be used for internal turning formed according to the present invention.
  • the substrate 12 has more than 4 pockets. According to a further embodiment, the substrate has at least 6 pockets. According to another embodiment, the substrate has at least 8 pockets. [0034] While the illustrated embodiment shows an even number of pockets that are symmetrically distributed. It is also within the scope of the present invention to provide an odd number of pockets, such as 7 or 9. It is also contemplated that the pockets can be located in a pattern that is not symmetrical. [0035]
  • the substrate 12 is formed from any suitable hard material. Examples of suitable materials include cemented carbides, cermets, and hard metal alloys. One suitable composition is a WC-Co cemented carbide having 10-20 weight % Co, and preferably having 15-17 weight % Co.
  • a superhard material 16 is provided in one or more, and preferably all, of the pockets 14.
  • the superhard material can comprise any suitable material chosen for its cutting characteristics.
  • the superhard material 16 can initially be provided in the form of a powder. Alternatively, the superhard material 16 can be pre-pressed green bodies.
  • FIG. 3 A specific illustrative example of this type of cutting tip geometry comprehended by the present invention is illustrated in Figure 3.
  • the geometry or shape of the cutting tip 20 illustrated in Figure 3 can be described as follows.
  • a pair of converging forward surfaces 22a and 22b meet at a forward nose 24, which is preferably rounded.
  • the nose 24 is presented to the workpiece during use of the cutting tip, As illustrated in Figure 3, a portion of the surfaces 22a and 22b, and the nose 24 comprise superhard cutting material 16.
  • the extent of superhard cutting material 16 extending from the apex of the nose 24 and back along surfaces 22a and 22b corresponds to dimension "L", and can be termed the leg length.
  • the dimension L is at least 2mm.
  • FIG. 4 is illustrative of three alternative cutting tip configurations: 20a, 20b and 20c. These cutting tip configurations differ with respect to the amount of superhard material contained therein, and consequently the leg length (L) thereof. Otherwise, the shape and particularly the rearward portion of each is the same as in Figure 3.
  • the amount of superhard material contained in the cutting tip 20 can be varied by choosing the location of the cutting lines 18 ( Figure 2), as well as by the size, configuration and/or depth of the pockets 14 in the blank 10.
  • a cutting tip 20c can be configured such that it is formed entirely from superhard cutting material, or a cutting tip 20a can be configured such that the superhard material in a relatively minor component thereof.
  • the body 32 is composed of any suitable hard material.
  • suitable materials include cemented carbides, cermets, and hard metal alloys.
  • One suitable composition is a WC-Co cemented carbide having 10-20 weight % Co, and preferably having 15-17 weight % Co.
  • the drill can have flutes and is otherwise a conventional product.
  • the cutting tip is arranged essentially parallel to a central axis of the drill while in Figure 12B, the cutting tips are disposed essentially perpendicularly to that axis.
  • Figure 13 represents side cross-sectional views of drills of the present invention.
  • Figure 13A is a view taken at 90° from the left of Figure
  • Figure 14 represents another embodiment of the present invention in which the surfaces 28a' and 28b' are of different lengths and are thus asymmetrical.
  • the insert can be used as a boring bar or for internal turning of a piece.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Composite Materials (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Forests & Forestry (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Drilling Tools (AREA)
  • Powder Metallurgy (AREA)
EP05779782A 2004-08-16 2005-08-11 Schaltbare schneideinsätze und herstellungsverfahren dafür Withdrawn EP1784268A4 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/918,391 US7360972B2 (en) 2003-06-03 2004-08-16 Indexable cutting inserts and methods for producing the same
US11/002,664 US20050183893A1 (en) 2004-01-13 2004-12-03 Indexable cutting inserts and methods for producing the same
PCT/US2005/028621 WO2006023376A2 (en) 2004-08-16 2005-08-11 Indexable cutting inserts and methods for producing the same

Publications (2)

Publication Number Publication Date
EP1784268A2 true EP1784268A2 (de) 2007-05-16
EP1784268A4 EP1784268A4 (de) 2012-03-28

Family

ID=36565329

Family Applications (2)

Application Number Title Priority Date Filing Date
EP05779782A Withdrawn EP1784268A4 (de) 2004-08-16 2005-08-11 Schaltbare schneideinsätze und herstellungsverfahren dafür
EP05815612A Withdrawn EP1819469A4 (de) 2004-12-03 2005-12-01 Schneideeinsatz mit ankerteilen für schneidespitzen

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP05815612A Withdrawn EP1819469A4 (de) 2004-12-03 2005-12-01 Schneideeinsatz mit ankerteilen für schneidespitzen

Country Status (6)

Country Link
US (1) US20050183893A1 (de)
EP (2) EP1784268A4 (de)
JP (2) JP2008509822A (de)
KR (2) KR20070034109A (de)
CN (2) CN101005919B (de)
WO (2) WO2006023376A2 (de)

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US20050271483A1 (en) * 2004-06-02 2005-12-08 Sandvik Ab Indexable cutting inserts and methods for producing the same
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JP6278137B1 (ja) 2017-03-21 2018-02-14 株式会社タンガロイ 工具
CN108127122A (zh) * 2017-12-04 2018-06-08 西安交通大学 一种复合结构增强的双材质粉末冶金锻造零部件及其制备方法
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CN109570539A (zh) * 2019-02-14 2019-04-05 廊坊西波尔钻石技术有限公司 一种用于加工铝合金的刀具
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CN101094741B (zh) 2011-10-12
CN101005919B (zh) 2012-05-23
KR20070034109A (ko) 2007-03-27
WO2006023376A2 (en) 2006-03-02
EP1819469A4 (de) 2010-07-28
EP1819469A1 (de) 2007-08-22
WO2006059949A1 (en) 2006-06-08
CN101005919A (zh) 2007-07-25
KR20070085686A (ko) 2007-08-27
CN101094741A (zh) 2007-12-26
JP2008509822A (ja) 2008-04-03
EP1784268A4 (de) 2012-03-28
US20050183893A1 (en) 2005-08-25
JP2008521636A (ja) 2008-06-26
WO2006023376A3 (en) 2006-07-13

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