WO2006059949A1 - Cutting insert with cutting tips anchor portions. - Google Patents

Cutting insert with cutting tips anchor portions. Download PDF

Info

Publication number
WO2006059949A1
WO2006059949A1 PCT/SE2005/001816 SE2005001816W WO2006059949A1 WO 2006059949 A1 WO2006059949 A1 WO 2006059949A1 SE 2005001816 W SE2005001816 W SE 2005001816W WO 2006059949 A1 WO2006059949 A1 WO 2006059949A1
Authority
WO
WIPO (PCT)
Prior art keywords
cutting
cutting insert
tips
insert
anchor portion
Prior art date
Application number
PCT/SE2005/001816
Other languages
French (fr)
Inventor
Clas Sjögren
Mikael Lindholm
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
Application filed by Sandvik Intellectual Property Ab filed Critical Sandvik Intellectual Property Ab
Priority to CN2005800416177A priority Critical patent/CN101094741B/en
Priority to JP2007544306A priority patent/JP2008521636A/en
Priority to EP05815612A priority patent/EP1819469A4/en
Publication of WO2006059949A1 publication Critical patent/WO2006059949A1/en

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 DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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

  • the present invention relates to cutting inserts having cutting edges formed from a superhard abrasive material.
  • Indexable cutting inserts typically have a polygo- nal shape with a superhard material disposed generally at the corners.
  • the superhard material often a cubic boron nitride or polycrystalline diamond material, aids in the cutting of hard work piece materials such as metals.
  • These cutting inserts are typically mounted in a fixed position to a cutting tool so as to present one of the corners or areas containing superhard material to the surface of a work piece. After being used for a period of time, the area of superhard material becomes worn.
  • a stacked structure is formed 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 corner thereof U.S. Patent No. 5,183,362.
  • the braze joint connecting the cutting tips to " The " body of the cutting insert creates an inherent weak point in the structure. This is particularly true due to the high temperatures that tend to exist during use of such cutting inserts, these high temperatures being in close proximity to the braze joint. In addition relatively complex fixtures have to be used during the brazing process.
  • 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 blank is then subsequently machined to give the cutting insert its final shape, i.e. - a generally polygonal body with superhard material disposed at the corners thereof, U.S. Patent No. 5,676,496.
  • French Patent Publication No. 2,691,657 discloses a cutting insert made with a special autocentering shape made of polycrystalline diamond, CBN or other cutting material. The insert is clamped into the tip by a spring without brazing. French Patent Publication No. 2,706,339 also discloses an insert of similar materials of a shape (including securing lugs) such that the insert can be secured in the corresponding hole in the tip by a mechanical wedging without brazing.
  • WO 2004/105983 discloses cutting insert including: 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 symmetric geometry that provides a mechanical retention or lock when inserted into the cavities of the cutting insert body, the cutting tips further being brazed in the cutting insert body.
  • Figure 1 is a top view of a cutting insert formed according to the present invention wherein black areas indicate superhard material.
  • Figures 2A and 2B are top views showing details of the geometry of a cutting tip formed according to the present invention.
  • Figures 3A-3G are top and side views of various cutting tips formed according to the present invention.
  • Figures 4A and 4B are a top view of a threading and thread-milling insert, respectively, formed according to the present invention.
  • Figure 5 is top view of another type of threading insert formed according to the present invention.
  • Figures 6A-6E are top and three side sections of other inserts formed according to the present invention.
  • Figures 7A and 7B are side cross-sectional view and top view, respectively, of a drill formed according to the present invention.
  • Figures 8A, 8B and 8C are side cross-sectional views of drill configurations formed according to the present invention.
  • Figure 9 is a side view of a tool which can be used for internal turning, boring, slotting or parting formed according to the present invention.
  • Figure 10 is side view of a parting and grooving tool formed according to the present invention.
  • Figure 11 is top view of a tool formed according to the present invention.
  • Figure 12 is a top view of a blank comprising a number of pockets filled with superhard material and cut lines for removal of a plurality of cutting tips therefrom.
  • the cutting inserts 60 for turning, milling, drilling or other machining applications consisting of at least one cutting tip 20 and an insert body 32 are illustrated in Fig. 1.
  • the cutting tips have a geometry that provides a mechanical retention or lock when inserted into cavities of the insert body.
  • the cutting tips 20 are affixed to the cavities is the body 32 by any suitable technique along an interface 40. Suitable techniques include gluing, soldering or brazing.
  • the cavities are preferably provided with a shape or geometry that is complimentary to the shape or geometry of the cutting tips disposed therein. As illustrated in Fig. 1 the cutting tips in top surface plane of the cutting insert are either symmetric 2Ox and asymmetrically arranged in the insert or they are asymmetric 2Oy in at least one way.
  • At least one of the cutting tips is arranged asymmetrically about a bisector through the corners of the cutting insert body and/or at least one of the cutting tips is asymmetric about a bisector through the top surface plane of the cutting tips and/or at least one of the cutting tips is asymmetric in the cutting edge portion about a line symmetrically dividing the anchor portion of the cutting tips and/or at least one of the cutting tips is asymmetric in the rearward anchor portion about a line symmetrically dividing the cutting edge portion of the cutting tips and/or at least one of the cutting tips is asymmetric in the plane sym- metrically dividing the cutting tips between a top surface and a bottom surface.
  • Cutting tips 20 comprehended by the present invention is illustrated in Figure 2A (symmetric) and 2B (asymmetric) .
  • 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 work piece during use of the cutting tip.
  • at least a portion of the surfaces 22a and 22b, and the nose 24 comprise superhard cutting material 16.
  • Moving in the direction away from the forward nose 24, subsequent to the converging surfaces 22a and 22b is an area of reduced width or a waisted section 25.
  • the waisted section is defined by a first pair of angled surfaces 26a and 26b, as well as a second set of surfaces 28a and 28b.
  • Surfaces 26a and 28a, as well as 26b and 28b meet at the area of reduced width and define a trough-like formation giving an essentially trapezoidal shape.
  • the surfaces denominated x a' and x b' can be of the same length as shown in Fig. 2A or of different lengths and shapes as shown in Fig. 2B.
  • the base portion 29 is substantially flat, but other shapes are possible including oval, circular and polygonal shapes.
  • the superhard material can comprise a boron nitride, such as cubic boron nitride (CBN) , a diamond material such as polycrystalline diamond (PCD) or a suit- able oxide or nitride ceramic such as alumina or silicon nitride or mixes thereof.
  • CBN, PCD or Ceramic material can have additions of other materials, such as carbides, nitrides, carbonitrides, oxides, and/or borides of metals chosen from groups IVa to Via of the periodic table and other elements as known in the art such as Al.
  • a CBN composite comprises 40-80, most preferably 55-70, vol-% CBN with an average grain size of less than 30 ⁇ m, preferably less than 5 ⁇ m, more preferably 0.1-4 ⁇ m essentially in one or more cBN grain size fractions for example bimodal.
  • the PCBN material also contains smaller amounts (typically ⁇ 10 wt% each) of other elements, e.g. Co, Ni, Al, W often as compounds such as WC, AlN and Al 2 O 3 .
  • the PCBN material according to the invention contains more than 60 wt-% CBN, preferably more than 80-wt% CBN, with at least 2 wt% aluminium compound and can include another component, generally Co-based. This material is particularly useful for the machining of cast iron.
  • Figures 3A-G are illustrative of three alternative cutting tip configurations hereby denominated as symmetric at least in the top surface plane: 20a, 20b and 20c. These cutting tip configurations differ with respect to the amount of superhard material contained therein. As illustrated in said figures, a cutting tip is configured such that the superhard material is a relatively minor component thereof 20a or a cutting tip can be configured such that it is formed entirely from superhard cutting material 20c.
  • the superhard material 16 is continuous from a top surface of the tips (not visible in Figs 3A, 3B and 3C) to an opposing bottom surface of the tips illustratively shown in Fig 3D.
  • the superhard material 16 is discontinuous from a top surface of the tips (not visible in Fig 3A, 3B and 3C) to an opposing bottom surface of the tips and interposed with at least one layer of a material that differs from the superhard material on the top and bottom surface illustratively shown in Fig 3E and 3F.
  • the configuration as illustrated is symmetric as 3F or asymmetric as 3E but can be vice versa.
  • the superhard material 16 is present only on a top surface of the tips (not visi- ble in Figs 3A, 3B and 3C) and the opposing bottom surface of the tips has a layer of a material that differs from the superhard material on the top surface illustratively shown in Fig 3G.
  • a material that differs from the superhard ma- terial is herein meant one or more of another superhard material, hard material such as some cemented carbides, and softer materials such as some solder alloys.
  • the insert body 32 in Fig. 1 is composed of any suitable hard material.
  • suitable materials include cemented carbides, cermets, and hard metal alloys and can be high speed steel for drilling applications, preferably any suitable composition of a WC-Co cemented carbide as known in the art having 5-20 weight % Co.
  • the illustrated cutting insert body 32 is preferably in the shape of a polygon or a diamond and is configured to receive two cutting tips. However, the shape of the body can be any conventional known in the art.
  • the body 30 can be configured to receive any suitable number of tips. It is not necessary that the tips disposed in the body 30 be identical to one another.
  • the optional central through-hole 36 is to be used for clamping and the actual configurations are dependant of the application as known in the art.
  • Figure 4A is an embodiment of the present invention of a threading insert which can be used in turning operations.
  • the cutting tip 2Od is formed and inserted so that it lays asymmetrically with respect to a bisector A-A of the corner of the insert.
  • Figure 4B is an embodiment of the present invention of a thread-milling insert.
  • the rear portion of the cutting tip is symmetrically arranged along the cutting insert body with multiple retentions and the cutting edge that will be in contact with the work piece is asymmetrical.
  • Figure 5 is another embodiment of a threading in- sert of the present invention.
  • the cutting tip is asymmetrical with respect to a bisector of the corner of the cutting insert and in addition having different cutting tip configurations 20a, 20b and 20c.
  • the cutting tip is asymmetrical with respect to a bisector of the cutting edge portion having an asymmetric rearward anchor portion of the cutting tip in 20c.
  • the remaining references are defined in Fig. 2A.
  • Figures 6 A-E show other embodiments of cutting in- serts of the present invention with exaggerated size of the cutting tips with the configuration in Fig. 3C as example.
  • Figure 6A is a generally square (although it could be rectangular) cutting insert with cutting tips arranged asymmetrically with respect to a bisector of the corner of the insert and also having an asymmetry in the thickness direction of the cutting tip.
  • Figures 6B and D are similar, triangularly shaped inserts in which the cutting tips are arranged symmetrically ( Figure 6B) and asymmetrically (Figure 6D) with respect to a bisec- tor of the corner of the insert.
  • the cutting tips are asymmetric in two directions in the cutting edge portion when affixed to the cutting insert body.
  • Figures 6C and 6E are also similar parting-off type tools again with the cutting tips arranged symmet- rical 6C and asymmetrical 6 ⁇ to a bisector through the cutting edge.
  • the cutting tips are also asymmetric for example by a tilted top surface with a chip breaking feature.
  • Figures 7A and 7B show still another embodiment of the present invention.
  • the cutting tip 52 is located in a drill generally indicated as 50.
  • the drill may have a single cutting tip while the drill shown in Figure 7B has 2 cutting tips 52 disposed on either side of the central axis of the drill.
  • 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 7B, the cutting tips are disposed essentially perpendicularly to that axis.
  • Figures 8A-C represent side cross-sectional views of drills of the present invention.
  • Figure 7A is a section taken at A-A of Figure 8A, 8B and 8C.
  • Figures 8B and 8C also are a section B-B of the embodi- ment of the Figure 7B.
  • Figure 9 represents another embodiment of the present invention in which the surfaces 28a 1 and 28b 1 are of different lengths and are thus asymmetrical.
  • the cutting tip is affixed to a body still refered to as a cut- ting insert body 32.
  • the tool for simplicity reasons still denominated the cutting insert can be used as a boring bar or for internal turning of a work piece and the cutting tip cuts in another direction with reference to the locking feature compared to Fig. 1.
  • Figure 10 is a side view of an insert of the present invention similar to Figure HC in which the cutting insert is used as, for example, a parting-off tool.
  • the insert is held within a cavity generally indicated as 60, which corresponds in shape to the anchor portion of the insert.
  • the cutting tip works in another direction with reference to the locking feature compared to Fig. 1.
  • Figure 11 is a top view of a small part internal boring bar that still is denominated cutting insert with interlock features in the at least partly mutual interface of a divided bar and the cutting tip.
  • the cutting tip cuts in another direction with reference to the locking feature compared to Fig. 1.
  • the insert 60 in Fig. 1 can be provided with a chip-breaker configuration, such as described in U.S. Patent No. 5,569,000.
  • the cutting insert 60 can be provided with a coating comprising one or more layer(s) as known in the art at least on the functioning surfaces thereof.
  • the cutting tip has a plane coinciding with the plane of the insert body. It is obvious that the plane of cutting tip can be positioned and/or tilted, below or above the plane of the insert body using adjusted anchor portions and/or cutting tips illustrated in Figs ⁇ B and 6C.
  • Inserts according to the present invention can be made, e.g. according to the method disclosed in WO 2004/105983.
  • Symmetric 'a' or asymmetric 'b' cutting tips are prepared from the blank of Figure 2 of WO 2004/105983 as shown as the blank 10 in Fig 12.
  • the blank contains a plurality of pockets 14 filled with su- perhard material 16.
  • a cutting tip 20 will be defined after cutting along the contour 18 forming a rearward anchor portion 21.
  • the cutting tips will then be arranged and affixed symmetrically or asymmetrically in a cutting insert body.

Abstract

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 lock when inserted into the cavities of the cutting insert body, said geometry including an anchor portion and substantially spaced away from the cutting edge of the body, and further comprising a braze j oint , between each of. the... cutting tips and the cutting insert body. The cutting insert body and/or the cutting tips have at least one asymmetric feature.

Description

Cutting insert with cutting tips anchor portions.
FIELD OP THE INVENTION
The present invention relates to cutting inserts having cutting edges formed from a superhard abrasive material.
BACKGROUND OF THE INVENTION
Indexable cutting inserts typically have a polygo- nal shape with a superhard material disposed generally at the corners. The superhard material, often a cubic boron nitride or polycrystalline diamond material, aids in the cutting of hard work piece materials such as metals. These cutting inserts are typically mounted in a fixed position to a cutting tool so as to present one of the corners or areas containing superhard material to the surface of a work piece. After being used for a period of time, the area of superhard material becomes worn. There are two predominant ways of making such inserts. According to one technique, a stacked structure is formed 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 corner thereof U.S. Patent No. 5,183,362.
However, several problems are associated with such techniques. The braze joint connecting the cutting tips to"The"body of the cutting insert creates an inherent weak point in the structure. This is particularly true due to the high temperatures that tend to exist during use of such cutting inserts, these high temperatures being in close proximity to the braze joint. In addition relatively complex fixtures have to be used during the brazing process.
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 blank is then subsequently machined to give the cutting insert its final shape, i.e. - a generally polygonal body with superhard material disposed at the corners thereof, U.S. Patent No. 5,676,496.
Such techniques also present certain difficulties. One disadvantage associated with this second technique is that there is an upper limit of the available volume of superhard material on the finished insert. Another disadvantage associated with this second technique is that if a single pocket of superhard material is defective, the entire insert cannot be sold and may have to be scrapped. French Patent Publication No. 2,691,657 discloses a cutting insert made with a special autocentering shape made of polycrystalline diamond, CBN or other cutting material. The insert is clamped into the tip by a spring without brazing. French Patent Publication No. 2,706,339 also discloses an insert of similar materials of a shape (including securing lugs) such that the insert can be secured in the corresponding hole in the tip by a mechanical wedging without brazing. WO 2004/105983 discloses cutting insert including: 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 symmetric geometry that provides a mechanical retention or lock when inserted into the cavities of the cutting insert body, the cutting tips further being brazed in the cutting insert body.
Thus, a need exists in the art to address the prob- lems discussed above and others.
BRIEF DESCRIPTION OF THE DRAWING FIGURES
Figure 1 is a top view of a cutting insert formed according to the present invention wherein black areas indicate superhard material.
Figures 2A and 2B are top views showing details of the geometry of a cutting tip formed according to the present invention.
Figures 3A-3G are top and side views of various cutting tips formed according to the present invention.
Figures 4A and 4B are a top view of a threading and thread-milling insert, respectively, formed according to the present invention.
Figure 5 is top view of another type of threading insert formed according to the present invention.
Figures 6A-6E are top and three side sections of other inserts formed according to the present invention. Figures 7A and 7B are side cross-sectional view and top view, respectively, of a drill formed according to the present invention.
Figures 8A, 8B and 8C are side cross-sectional views of drill configurations formed according to the present invention.
Figure 9 is a side view of a tool which can be used for internal turning, boring, slotting or parting formed according to the present invention.
Figure 10 is side view of a parting and grooving tool formed according to the present invention.
Figure 11 is top view of a tool formed according to the present invention. Figure 12 is a top view of a blank comprising a number of pockets filled with superhard material and cut lines for removal of a plurality of cutting tips therefrom.
DETAILED DESCRIPTION OF THE INVENTION
The cutting inserts 60 for turning, milling, drilling or other machining applications according to the present invention consisting of at least one cutting tip 20 and an insert body 32 are illustrated in Fig. 1. The cutting tips have a geometry that provides a mechanical retention or lock when inserted into cavities of the insert body. The cutting tips 20 are affixed to the cavities is the body 32 by any suitable technique along an interface 40. Suitable techniques include gluing, soldering or brazing. The cavities are preferably provided with a shape or geometry that is complimentary to the shape or geometry of the cutting tips disposed therein. As illustrated in Fig. 1 the cutting tips in top surface plane of the cutting insert are either symmetric 2Ox and asymmetrically arranged in the insert or they are asymmetric 2Oy in at least one way.
More specifically at least one of the cutting tips is arranged asymmetrically about a bisector through the corners of the cutting insert body and/or at least one of the cutting tips is asymmetric about a bisector through the top surface plane of the cutting tips and/or at least one of the cutting tips is asymmetric in the cutting edge portion about a line symmetrically dividing the anchor portion of the cutting tips and/or at least one of the cutting tips is asymmetric in the rearward anchor portion about a line symmetrically dividing the cutting edge portion of the cutting tips and/or at least one of the cutting tips is asymmetric in the plane sym- metrically dividing the cutting tips between a top surface and a bottom surface.
It is obvious that the asymmetry referred is other than between the cutting edge portion and the rearward anchor portion.
Cutting tips 20 comprehended by the present invention is illustrated in Figure 2A (symmetric) and 2B (asymmetric) . 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 work piece during use of the cutting tip. As illustrated in Figure 2A and 2B, at least a portion of the surfaces 22a and 22b, and the nose 24 comprise superhard cutting material 16. Moving in the direction away from the forward nose 24, subsequent to the converging surfaces 22a and 22b is an area of reduced width or a waisted section 25. The waisted section is defined by a first pair of angled surfaces 26a and 26b, as well as a second set of surfaces 28a and 28b. Surfaces 26a and 28a, as well as 26b and 28b meet at the area of reduced width and define a trough-like formation giving an essentially trapezoidal shape. The surfaces denominated xa' and xb' can be of the same length as shown in Fig. 2A or of different lengths and shapes as shown in Fig. 2B. The base portion 29 is substantially flat, but other shapes are possible including oval, circular and polygonal shapes.
The superhard material can comprise a boron nitride, such as cubic boron nitride (CBN) , a diamond material such as polycrystalline diamond (PCD) or a suit- able oxide or nitride ceramic such as alumina or silicon nitride or mixes thereof. The CBN, PCD or Ceramic material can have additions of other materials, such as carbides, nitrides, carbonitrides, oxides, and/or borides of metals chosen from groups IVa to Via of the periodic table and other elements as known in the art such as Al. Preferably a CBN composite comprises 40-80, most preferably 55-70, vol-% CBN with an average grain size of less than 30μm, preferably less than 5 μm, more preferably 0.1-4 μm essentially in one or more cBN grain size fractions for example bimodal.
Often, the PCBN material also contains smaller amounts (typically <10 wt% each) of other elements, e.g. Co, Ni, Al, W often as compounds such as WC, AlN and Al2O3. In another embodiment the PCBN material according to the invention contains more than 60 wt-% CBN, preferably more than 80-wt% CBN, with at least 2 wt% aluminium compound and can include another component, generally Co-based. This material is particularly useful for the machining of cast iron.
Figures 3A-G are illustrative of three alternative cutting tip configurations hereby denominated as symmetric at least in the top surface plane: 20a, 20b and 20c. These cutting tip configurations differ with respect to the amount of superhard material contained therein. As illustrated in said figures, a cutting tip is configured such that the superhard material is a relatively minor component thereof 20a or a cutting tip can be configured such that it is formed entirely from superhard cutting material 20c.
In one embodiment the superhard material 16 is continuous from a top surface of the tips (not visible in Figs 3A, 3B and 3C) to an opposing bottom surface of the tips illustratively shown in Fig 3D. In an alternative embodiment the superhard material 16 is discontinuous from a top surface of the tips (not visible in Fig 3A, 3B and 3C) to an opposing bottom surface of the tips and interposed with at least one layer of a material that differs from the superhard material on the top and bottom surface illustratively shown in Fig 3E and 3F. The configuration as illustrated is symmetric as 3F or asymmetric as 3E but can be vice versa. In a further embodiment the superhard material 16 is present only on a top surface of the tips (not visi- ble in Figs 3A, 3B and 3C) and the opposing bottom surface of the tips has a layer of a material that differs from the superhard material on the top surface illustratively shown in Fig 3G.
With a material that differs from the superhard ma- terial is herein meant one or more of another superhard material, hard material such as some cemented carbides, and softer materials such as some solder alloys.
The insert body 32 in Fig. 1 is composed of any suitable hard material. Examples of suitable materials include cemented carbides, cermets, and hard metal alloys and can be high speed steel for drilling applications, preferably any suitable composition of a WC-Co cemented carbide as known in the art having 5-20 weight % Co. The illustrated cutting insert body 32 is preferably in the shape of a polygon or a diamond and is configured to receive two cutting tips. However, the shape of the body can be any conventional known in the art. The body 30 can be configured to receive any suitable number of tips. It is not necessary that the tips disposed in the body 30 be identical to one another. The optional central through-hole 36 is to be used for clamping and the actual configurations are dependant of the application as known in the art. Figure 4A is an embodiment of the present invention of a threading insert which can be used in turning operations. In this instance, the cutting tip 2Od is formed and inserted so that it lays asymmetrically with respect to a bisector A-A of the corner of the insert. Figure 4B is an embodiment of the present invention of a thread-milling insert. In this case, the rear portion of the cutting tip is symmetrically arranged along the cutting insert body with multiple retentions and the cutting edge that will be in contact with the work piece is asymmetrical.
Both the figures 4A and 4B are exemplified using the configuration in Fig. 3C referred above.
Figure 5 is another embodiment of a threading in- sert of the present invention. Again, the cutting tip is asymmetrical with respect to a bisector of the corner of the cutting insert and in addition having different cutting tip configurations 20a, 20b and 20c. Within Figure 5 is yet another embodiment since the cutting tip is asymmetrical with respect to a bisector of the cutting edge portion having an asymmetric rearward anchor portion of the cutting tip in 20c. The remaining references are defined in Fig. 2A.
Figures 6 A-E show other embodiments of cutting in- serts of the present invention with exaggerated size of the cutting tips with the configuration in Fig. 3C as example. Figure 6A is a generally square (although it could be rectangular) cutting insert with cutting tips arranged asymmetrically with respect to a bisector of the corner of the insert and also having an asymmetry in the thickness direction of the cutting tip. Figures 6B and D are similar, triangularly shaped inserts in which the cutting tips are arranged symmetrically (Figure 6B) and asymmetrically (Figure 6D) with respect to a bisec- tor of the corner of the insert. In figure 6B the cutting tips are asymmetric in two directions in the cutting edge portion when affixed to the cutting insert body. Figures 6C and 6E are also similar parting-off type tools again with the cutting tips arranged symmet- rical 6C and asymmetrical 6Ξ to a bisector through the cutting edge. In figure 6C the cutting tips are also asymmetric for example by a tilted top surface with a chip breaking feature.
Figures 7A and 7B show still another embodiment of the present invention. In this case, the cutting tip 52 is located in a drill generally indicated as 50. As shown in Figure 7A, the drill may have a single cutting tip while the drill shown in Figure 7B has 2 cutting tips 52 disposed on either side of the central axis of the drill. Although not shown, the drill can have flutes and is otherwise a conventional product. In Figure 7A, the cutting tip is arranged essentially parallel to a central axis of the drill while in Figure 7B, the cutting tips are disposed essentially perpendicularly to that axis.
Figures 8A-C represent side cross-sectional views of drills of the present invention. For example, Figure 7A is a section taken at A-A of Figure 8A, 8B and 8C. Figures 8B and 8C also are a section B-B of the embodi- ment of the Figure 7B.
Figure 9 represents another embodiment of the present invention in which the surfaces 28a1 and 28b1 are of different lengths and are thus asymmetrical. The cutting tip is affixed to a body still refered to as a cut- ting insert body 32. In this particular embodiment, the tool for simplicity reasons still denominated the cutting insert can be used as a boring bar or for internal turning of a work piece and the cutting tip cuts in another direction with reference to the locking feature compared to Fig. 1.
Figure 10 is a side view of an insert of the present invention similar to Figure HC in which the cutting insert is used as, for example, a parting-off tool. The insert is held within a cavity generally indicated as 60, which corresponds in shape to the anchor portion of the insert. The cutting tip works in another direction with reference to the locking feature compared to Fig. 1.
Figure 11 is a top view of a small part internal boring bar that still is denominated cutting insert with interlock features in the at least partly mutual interface of a divided bar and the cutting tip. The cutting tip cuts in another direction with reference to the locking feature compared to Fig. 1. Further, the insert 60 in Fig. 1 can be provided with a chip-breaker configuration, such as described in U.S. Patent No. 5,569,000.
The cutting insert 60 can be provided with a coating comprising one or more layer(s) as known in the art at least on the functioning surfaces thereof.
In the description the cutting tip has a plane coinciding with the plane of the insert body. It is obvious that the plane of cutting tip can be positioned and/or tilted, below or above the plane of the insert body using adjusted anchor portions and/or cutting tips illustrated in Figs βB and 6C.
Inserts according to the present invention can be made, e.g. according to the method disclosed in WO 2004/105983. Symmetric 'a' or asymmetric 'b' cutting tips are prepared from the blank of Figure 2 of WO 2004/105983 as shown as the blank 10 in Fig 12. The blank contains a plurality of pockets 14 filled with su- perhard material 16. A cutting tip 20 will be defined after cutting along the contour 18 forming a rearward anchor portion 21. The cutting tips will then be arranged and affixed symmetrically or asymmetrically in a cutting insert body.
The methods disclosed in US 4,714,385 or US 5,813,105 are also possible.

Claims

1. A cutting insert comprising: a cutting insert body having a plurality of cavities formed therein; a plurality of cutting tips, each of the plurality of cut- ting tips disposed in a respective cavity, the cutting tips having a geometry that provides a mechanical retention or lock when inserted into the cavities of the cutting insert body said geometry including an anchor portion with its base substantially spaced away from the cutting edge of the body, further comprising a joint between each of the cutting tips and the cutting insert body with at least one asymmetric feature on the cutting insert
2. The cutting insert of claim 1, wherein at least one of the cutting tips is arranged asymmetrically about a bisector through the corners of the cutting insert body.
3. The cutting insert of claim 1, wherein at least one of the cutting tips is asymmetric about a bisector through the top surface plane of the cutting tips.
4. The cutting insert of claim 1, wherein at least one of the cutting tips is asymmetric in the cutting edge portion about a line symmetrically dividing the anchor portion of the cutting tips.
5. The cutting insert of claim 1, wherein at least one of the cutting tips is asymmetric in the rearward anchor portion about a line symmetrically dividing the cutting edge portion of the cutting tips.
6. The cutting insert of claim 1, wherein each of the cutting tips comprises, at least in part, a super- hard cutting material.
7. The cutting insert of claim 1, wherein each of the cutting tips are entirely made of a superhard cutting material.
8. The cutting insert of claim 6 or 7, wherein the superhard material comprises cubic boron nitride or polycrystalline diamond.
9. The cutting insert of claim 8, wherein the su- perhard material further comprises at least one of a nitride, carbonitride, oxide or boride of a metal chosen from groups IVa - Via of the Periodic Table.
10. The cutting insert of claim 6 or 7, wherein the superhard material comprises a composite having a first phase comprising cubic boron nitride or polycrystalline diamond particles and a second phase comprising a metal, a metalloid, or alloys thereof.
11. The cutting insert of claim 1, wherein the cutting edge portion comprises a top surface and an oppos- ing bottom surface, and the superhard material extends from the top surface to the bottom surface thereby defining two cutting edges.
12. The cutting insert of claim 1, wherein at least the cutting edge portion comprises a top surface and an opposing bottom surface, and the superhard material extends from the top cutting edge surface and from the bottom cutting edge surface to at least one interposing material different from the material in the cutting edges.
13. The cutting insert of claim 1, wherein at least the cutting edge portion comprises a top surface and an opposing bottom surface, and the superhard material extends from the top cutting edge surface and from the bottom surface a material different from the material in the cutting edges.
14. The cutting insert of claim 12, wherein the interposing material is a part of the cutting tip.
15. The cutting inserts of claim 12, wherein the interposing material is a part of the cutting insert body.
16. The cutting insert of claim 1, wherein the anchor portion of the cutting tips have a general trapezoidal shape.
17. The cutting insert of claim 16, wherein the an- chor portion of the cutting tips is substantially flat.
18. The cutting insert of claim 1, wherein the anchor portion of the cutting tips has a polygonal shape.
19. The cutting insert of claim 1, wherein the anchor portion of the cutting tips has an oval or circular shape.
20. The cutting insert any of claim 16 to 19, wherein the cutting tip comprises a rounded forward nose and a pair of converging forward surfaces that meet at the nose.
21. The cutting insert any of claims 1-20, wherein the cutting tip is provided with a waisted section of reduced width relative to the anchor portion.
22. The cutting insert of claim 21, wherein the waisted section comprises a first pair of substantially angled surfaces and a second pair of surfaces that meet at the section of reduced width relative to the anchor portion.
23. The cutting insert of claim 1, wherein the cutting insert body is formed from a cemented carbide, cer- met, or hard metal alloy.
24. The cutting insert of claim 23, wherein the cutting insert body is formed of a cemented carbide comprising WC and Co, the cemented carbide comprising 5-20 weight % Co.
25. The cutting insert of claim 24, wherein the cutting insert body is in the shape of a polygon.
26. The cutting insert any of claims 1 to 25, wherein the cavities have a shape that is sufficiently complimentary to the shape of the cutting tips.
27. The cutting insert of claim 1, wherein at least one of the cutting tips comprises a coating disposed on at least a portion thereof.
28. The cutting insert of claim 1, wherein the cut- ting insert body comprises a chip-breaking feature.
29. The cutting insert of claim 1 wherein the cutting insert body is a parting and grooving tool.
30. The cutting insert of claim 1 wherein the cutting insert body is a boring tool.
31. The cutting insert of claim 1 wherein the cutting insert body is a drill.
32. The cutting insert of claim 31 wherein at least one cutting tip is disposed substantially parallel to the axial direction of the drill.
33. The cutting insert of claim 31 wherein at least the cutting tip is disposed substantially perpendicular to the axial direction of the drill.
34. The cutting insert of claim 1 wherein the joint is a brazed joint.
PCT/SE2005/001816 2004-12-03 2005-12-01 Cutting insert with cutting tips anchor portions. WO2006059949A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN2005800416177A CN101094741B (en) 2004-12-03 2005-12-01 Cutting inserts with cutting end anchor portion
JP2007544306A JP2008521636A (en) 2004-12-03 2005-12-01 Cutting insert with cutting tip anchor
EP05815612A EP1819469A4 (en) 2004-12-03 2005-12-01 Cutting insert with cutting tips anchor portions.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/002,664 US20050183893A1 (en) 2004-01-13 2004-12-03 Indexable cutting inserts and methods for producing the same
US11/002,664 2004-12-03

Publications (1)

Publication Number Publication Date
WO2006059949A1 true WO2006059949A1 (en) 2006-06-08

Family

ID=36565329

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/US2005/028621 WO2006023376A2 (en) 2004-08-16 2005-08-11 Indexable cutting inserts and methods for producing the same
PCT/SE2005/001816 WO2006059949A1 (en) 2004-12-03 2005-12-01 Cutting insert with cutting tips anchor portions.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
PCT/US2005/028621 WO2006023376A2 (en) 2004-08-16 2005-08-11 Indexable cutting inserts and methods for producing the same

Country Status (6)

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103862075A (en) * 2014-03-31 2014-06-18 北京沃尔德超硬工具有限公司 PCBN blade for heavy cutting
US9089900B2 (en) 2010-12-31 2015-07-28 Diamond Innovations, Inc. Method of producing holes and countersinks in polycrystalline bodies
EP3378587A1 (en) * 2017-03-21 2018-09-26 Tungaloy Corporation Tool

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7322776B2 (en) * 2003-05-14 2008-01-29 Diamond Innovations, Inc. Cutting tool inserts and methods to manufacture
US20040231894A1 (en) * 2003-05-21 2004-11-25 Dvorachek Harold A Rotary tools or bits
KR101233617B1 (en) * 2003-06-03 2013-02-14 산드빅 인터렉츄얼 프로퍼티 에이비 Indexable cutting inserts and methods for producing the same
US20050183893A1 (en) * 2004-01-13 2005-08-25 Sandvik Ab Indexable cutting inserts and methods for producing the same
US20050271483A1 (en) * 2004-06-02 2005-12-08 Sandvik Ab Indexable cutting inserts and methods for producing the same
SE528920C2 (en) * 2005-03-16 2007-03-13 Sandvik Intellectual Property Cut with ceramic cutting tip where the cutting tip is mounted in a recess
US7836980B2 (en) * 2007-08-13 2010-11-23 Baker Hughes Incorporated Earth-boring tools having pockets for receiving cutting elements and methods for forming earth-boring tools including such pockets
US8162082B1 (en) * 2009-04-16 2012-04-24 Us Synthetic Corporation Superabrasive compact including multiple superabrasive cutting portions, methods of making same, and applications therefor
CN102498230B (en) * 2009-07-14 2016-09-07 Msm克里斯塔尔公司 The manufacture method of indexable insert tip, throw away tip
US9242299B2 (en) * 2010-01-07 2016-01-26 Gkn Sinter Metals, Llc Machining tool and method of manufacturing same
EP2478982A1 (en) * 2011-01-21 2012-07-25 VARGUS Ltd. Cutting insert for thread cutting and cutting tool
US9010464B2 (en) * 2011-05-04 2015-04-21 Dover BMCS Acquistion Corporation Drill bits and drilling apparatuses including the same
CN102825440A (en) * 2012-09-19 2012-12-19 常州市南方卫生器材厂有限公司 Manufacturing process of cutter for punching adhesive tape
KR101457793B1 (en) * 2013-03-15 2014-11-04 권영기 Insert tip for metal groove cutting
US20160207116A1 (en) * 2015-01-20 2016-07-21 United Technologies Corporation Method to machine deep features using a lathe
US10731420B2 (en) * 2015-03-30 2020-08-04 Schlumberger Technology Corporation Indexing drill bit
US10450808B1 (en) * 2016-08-26 2019-10-22 Us Synthetic Corporation Multi-part superabrasive compacts, rotary drill bits including multi-part superabrasive compacts, and related methods
CH713065B1 (en) * 2016-10-21 2020-11-30 Reishauer Ag Tool for power skiving of pre-cut workpieces.
JP6766998B2 (en) * 2016-12-15 2020-10-14 住友電工焼結合金株式会社 Throw away tip
CN108127122A (en) * 2017-12-04 2018-06-08 西安交通大学 A kind of double material sinter soging parts of composite construction enhancing and preparation method thereof
EP3569351A1 (en) * 2018-05-14 2019-11-20 AB Sandvik Coromant Veined tool blank and drill
CN109570539A (en) * 2019-02-14 2019-04-05 廊坊西波尔钻石技术有限公司 It is a kind of for processing the cutter of aluminium alloy
WO2022230033A1 (en) * 2021-04-27 2022-11-03 Sumitomo Electric Hardmetal Corp. Boring tool and cutting insert
JP7003390B1 (en) 2021-06-03 2022-01-20 株式会社タンガロイ Cutting insert

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2944323A (en) * 1954-12-07 1960-07-12 Georg Hufnagel Werkzengfabrik Compound tool
US4457765A (en) * 1978-02-28 1984-07-03 Wilson William I Abrasive bodies
DE4100351A1 (en) * 1990-01-10 1991-07-11 Nippon Oils & Fats Co Ltd Cutting tool with improved binding strength - made of cutting edge sintered to support part slotted into groove of base and soldered in place
FR2706339A3 (en) * 1993-06-18 1994-12-23 M2P Sa Device with mechanical immobilisation of the cutting inserts for tools of machine tools
US20020112590A1 (en) * 2001-02-20 2002-08-22 Bohner Stephan E. Tree felling disc saw with replaceable teeth
DE10258133A1 (en) * 2002-11-29 2004-06-24 MAPAL Fabrik für Präzisionswerkzeuge Dr. Kress KG cutting board
US20040228694A1 (en) * 2003-05-14 2004-11-18 General Electric Company Cutting tool inserts and methods to manufacture
WO2004105983A1 (en) * 2003-06-03 2004-12-09 Sandvik Ab Indexable cutting inserts and methods for producing the same
US20050183893A1 (en) * 2004-01-13 2005-08-25 Sandvik Ab Indexable cutting inserts and methods for producing the same

Family Cites Families (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US653165A (en) * 1897-11-08 1900-07-03 William H Babcock Method of making compound cutter-bars.
US885770A (en) * 1906-05-31 1908-04-28 Espen Lucas Machine Works Metal-cutting saw.
SE305791B (en) * 1964-02-06 1968-11-04 Diadur Ab
SE382579B (en) * 1974-01-30 1976-02-09 Skf Ind Trading & Dev METHOD OF PRODUCING CUTTING TOOLS OF TURNING CUTTING TYPE WITH SEVERAL CUTTING EDGES
DE2719330C3 (en) * 1977-04-30 1984-01-05 Christensen, Inc., 84115 Salt Lake City, Utah Rotary drill bit
IL62278A (en) * 1981-03-03 1984-10-31 Iscar Ltd Rotational cutting tool
US4561810A (en) * 1981-12-16 1985-12-31 General Electric Company Bi-level cutting insert
JPS5916910A (en) * 1982-07-20 1984-01-28 Mitsubishi Metal Corp Manufacture of superhigh-tension sintering body tip with chip breaker
JPS5916911A (en) * 1982-07-20 1984-01-28 Mitsubishi Metal Corp Superhigh-tension sintering blank for tip
JPS61197121A (en) * 1985-02-23 1986-09-01 Nachi Fujikoshi Corp Hob
US4714385A (en) * 1986-02-27 1987-12-22 General Electric Company Polycrystalline diamond and CBN cutting tools
IE62468B1 (en) * 1987-02-09 1995-02-08 De Beers Ind Diamond Abrasive product
DE3864075D1 (en) * 1987-05-20 1991-09-12 Sumitomo Electric Industries PARTING TOOL.
CN2045342U (en) * 1989-04-14 1989-10-04 湖南大学 Chip-breaking tipped drill
US5075181A (en) * 1989-05-05 1991-12-24 Kennametal Inc. High hardness/high compressive stress multilayer coated tool
US4991467A (en) * 1989-08-14 1991-02-12 Smith International, Inc. Diamond twist drill blank
US5183362A (en) * 1990-01-10 1993-02-02 Nippon Oil And Fats Co., Ltd. Cutting tool assembly
DE69112665T2 (en) * 1990-02-20 1996-04-04 Sumitomo Electric Industries Drill with one-way cutting insert.
EP0449571B1 (en) * 1990-03-30 1995-08-30 Sumitomo Electric Industries, Ltd. Polycrystalline diamond tool and method for producing the polycrystalline diamond tool
DE69017010T2 (en) * 1990-05-22 1995-06-08 Seco Tools Ab Cutting insert.
US5115697A (en) * 1991-08-16 1992-05-26 Smith International, Inc. Diamond rotary cutter flute geometry
JP2949973B2 (en) * 1991-11-19 1999-09-20 三菱マテリアル株式会社 Indexable tip
US5193948A (en) * 1991-12-16 1993-03-16 Gte Valenite Corporation Chip control inserts with diamond segments
FR2691657B1 (en) * 1992-05-26 1994-09-02 M2P Mat Precision Production Self-centering inserts in polycrystalline diamond or boron nitride and other cutting materials, and their mechanical clamping and centering device.
ZA935525B (en) * 1992-08-06 1994-02-24 De Beers Ind Diamond Tool insert
SE508387C2 (en) * 1993-05-26 1998-10-05 Sandvik Ab round Cut
SE9301811D0 (en) * 1993-05-27 1993-05-27 Sandvik Ab CUTTING INSERT
KR950031336A (en) * 1994-02-28 1995-12-18 아키모토 유우미 Drawaway Tips and Cutting Tools
SE509296C2 (en) * 1994-11-29 1999-01-11 Mircona Ab Slot milling device
US5594931A (en) * 1995-05-09 1997-01-14 Newcomer Products, Inc. Layered composite carbide product and method of manufacture
ZA963789B (en) * 1995-05-22 1997-01-27 Sandvik Ab Metal cutting inserts having superhard abrasive boedies and methods of making same
US5598621A (en) * 1995-05-22 1997-02-04 Smith International Inc. Method of making metal cutting inserts having superhard abrasive bodies
US5829924A (en) * 1995-09-19 1998-11-03 Kennametal Inc. Cutting tool with insert clamping mechanism
US6286406B1 (en) * 1996-02-12 2001-09-11 Credo Tool Company Injection molded carbide cutting insert
US6106585A (en) * 1996-02-14 2000-08-22 Smith International, Inc. Process for making diamond and cubic boron nitride cutting elements
US6120570A (en) * 1996-02-14 2000-09-19 Smith International Process for manufacturing inserts with holes for clamping
US5984593A (en) * 1997-03-12 1999-11-16 Kennametal Inc. Cutting insert for milling titanium and titanium alloys
EP0899044B1 (en) * 1997-08-27 2002-12-18 De Beers Industrial Diamonds (Pty) Ltd Method of making a drill blank
US6155755A (en) * 1998-03-02 2000-12-05 Sumitomo Electric Industries, Ltd. Hard sintered body tool
US6099209A (en) * 1998-08-07 2000-08-08 Kennametal Inc. Cutting tool and method for producing and cutting a non-porous surface layer
ZA200102323B (en) * 1998-10-08 2001-09-21 De Beers Ind Diamond Tool component.
US6161990A (en) * 1998-11-12 2000-12-19 Kennametal Inc. Cutting insert with improved flank surface roughness and method of making the same
JP2000246512A (en) * 1998-12-28 2000-09-12 Ngk Spark Plug Co Ltd Diamond coating cutting tool
SE519862C2 (en) * 1999-04-07 2003-04-15 Sandvik Ab Methods of manufacturing a cutting insert consisting of a PcBN body and a cemented carbide or cermet body
SE515070C2 (en) * 1999-10-22 2001-06-05 Sandvik Ab Double negative cutting tool for chip separating machining
US6511265B1 (en) * 1999-12-14 2003-01-28 Ati Properties, Inc. Composite rotary tool and tool fabrication method
IL134226A (en) * 2000-01-26 2003-12-10 Iscar Ltd Cutting tool assembly
US20020190105A1 (en) * 2000-07-19 2002-12-19 Yasuyuki Kanada Hard sintered compact throwaway tip
CN1321209C (en) * 2002-10-21 2007-06-13 株洲硬质合金集团有限公司 Method for mfg. W-Co-Ti hard alloy
US20050271483A1 (en) * 2004-06-02 2005-12-08 Sandvik Ab Indexable cutting inserts and methods for producing the same

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2944323A (en) * 1954-12-07 1960-07-12 Georg Hufnagel Werkzengfabrik Compound tool
US4457765A (en) * 1978-02-28 1984-07-03 Wilson William I Abrasive bodies
DE4100351A1 (en) * 1990-01-10 1991-07-11 Nippon Oils & Fats Co Ltd Cutting tool with improved binding strength - made of cutting edge sintered to support part slotted into groove of base and soldered in place
FR2706339A3 (en) * 1993-06-18 1994-12-23 M2P Sa Device with mechanical immobilisation of the cutting inserts for tools of machine tools
US20020112590A1 (en) * 2001-02-20 2002-08-22 Bohner Stephan E. Tree felling disc saw with replaceable teeth
DE10258133A1 (en) * 2002-11-29 2004-06-24 MAPAL Fabrik für Präzisionswerkzeuge Dr. Kress KG cutting board
US20040228694A1 (en) * 2003-05-14 2004-11-18 General Electric Company Cutting tool inserts and methods to manufacture
WO2004105983A1 (en) * 2003-06-03 2004-12-09 Sandvik Ab Indexable cutting inserts and methods for producing the same
US20050183893A1 (en) * 2004-01-13 2005-08-25 Sandvik Ab Indexable cutting inserts and methods for producing the same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1819469A4 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9089900B2 (en) 2010-12-31 2015-07-28 Diamond Innovations, Inc. Method of producing holes and countersinks in polycrystalline bodies
CN103862075A (en) * 2014-03-31 2014-06-18 北京沃尔德超硬工具有限公司 PCBN blade for heavy cutting
EP3378587A1 (en) * 2017-03-21 2018-09-26 Tungaloy Corporation Tool
CN108620612A (en) * 2017-03-21 2018-10-09 株式会社泰珂洛 Tool
US10596637B2 (en) 2017-03-21 2020-03-24 Tungaloy Corporation Tool

Also Published As

Publication number Publication date
CN101005919B (en) 2012-05-23
CN101094741A (en) 2007-12-26
KR20070034109A (en) 2007-03-27
EP1819469A4 (en) 2010-07-28
WO2006023376A2 (en) 2006-03-02
JP2008509822A (en) 2008-04-03
WO2006023376A3 (en) 2006-07-13
EP1784268A2 (en) 2007-05-16
CN101005919A (en) 2007-07-25
EP1819469A1 (en) 2007-08-22
EP1784268A4 (en) 2012-03-28
CN101094741B (en) 2011-10-12
US20050183893A1 (en) 2005-08-25
KR20070085686A (en) 2007-08-27
JP2008521636A (en) 2008-06-26

Similar Documents

Publication Publication Date Title
EP1819469A1 (en) Cutting insert with cutting tips anchor portions.
US8161850B2 (en) Indexable cutting inserts and methods for producing the same
EP1755812B1 (en) Indexable cutting inserts and methods for producing the same
US20060045640A1 (en) Support pads for drill heads
US6655882B2 (en) Twist drill having a sintered cemented carbide body, and like tools, and use thereof
US5137398A (en) Drill bit having a diamond-coated sintered body
EP1859882B1 (en) Cbn cutting tool for high-grade, high-efficiency machining
JP2006528077A (en) Uncoated cutting tool with brazed ultra-hard blank
JP2012512043A (en) Cutting insert kit, cutting insert manufacturing method, and cutting insert separated from cutting insert kit
JP7304989B2 (en) Manufacturing method of cutting insert, cutting tool and cutting work
US11420267B2 (en) Cutting insert, cutting tool, and method for manufacturing machined product
CN111148590B (en) Cutting insert, cutting tool, and method for manufacturing cut product
JPH0343112A (en) Drill made of sintered hard alloy
WO2024062985A1 (en) Cutting insert, cutting tool, and method for manufacturing machined product
WO2023090247A1 (en) Cutting insert, cutting tool, and method for manufacturing cut workpiece
JPH02152703A (en) Cutting tool using high-hardness compound sintered compact for cutting edge
JP2002254213A (en) Tip, throwaway tip, and cutting tool
JPH0349813A (en) Sintered hard alloy made drill
JPH0343111A (en) Drill made of sintered hard alloy
JPH06312311A (en) Cutting tool

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KN KP KR KZ LC LK LR LS LT LU LV LY MA MD MG MK MN MW MX MZ NA NG NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU LV MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 2005815612

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2007544306

Country of ref document: JP

WWE Wipo information: entry into national phase

Ref document number: 1020077012513

Country of ref document: KR

WWE Wipo information: entry into national phase

Ref document number: 200580041617.7

Country of ref document: CN

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 2405/KOLNP/2007

Country of ref document: IN

WWP Wipo information: published in national office

Ref document number: 2005815612

Country of ref document: EP