US20050271483A1 - Indexable cutting inserts and methods for producing the same - Google Patents
Indexable cutting inserts and methods for producing the same Download PDFInfo
- Publication number
- US20050271483A1 US20050271483A1 US10/857,922 US85792204A US2005271483A1 US 20050271483 A1 US20050271483 A1 US 20050271483A1 US 85792204 A US85792204 A US 85792204A US 2005271483 A1 US2005271483 A1 US 2005271483A1
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- US
- United States
- Prior art keywords
- layer
- cutting
- superhard
- hole
- cutting 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.)
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Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
- C23C30/005—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process on hard metal substrates
-
- 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
- B23B27/145—Specially shaped plate-like cutting inserts, i.e. length greater or equal to width, width greater than or equal to thickness characterised by having a special shape
-
- 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
- B23B27/18—Cutting tools of which the bits or tips or cutting inserts are of special material with cutting bits or tips or cutting inserts rigidly mounted, e.g. by brazing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2200/00—Details of cutting inserts
- B23B2200/36—Other features of cutting inserts not covered by B23B2200/04 - B23B2200/32
- B23B2200/3618—Fixation holes
-
- 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
- B23B2226/31—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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T407/00—Cutters, for shaping
- Y10T407/19—Rotary cutting tool
- Y10T407/1906—Rotary cutting tool including holder [i.e., head] having seat for inserted tool
- Y10T407/1934—Rotary cutting tool including holder [i.e., head] having seat for inserted tool with separate means to fasten tool to holder
- Y10T407/1936—Apertured tool
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T407/00—Cutters, for shaping
- Y10T407/23—Cutters, for shaping including tool having plural alternatively usable cutting edges
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T407/00—Cutters, for shaping
- Y10T407/26—Cutters, for shaping comprising cutting edge bonded to tool shank
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T407/00—Cutters, for shaping
- Y10T407/27—Cutters, for shaping comprising tool of specific chemical composition
Definitions
- the present invention relates to cutting inserts having cutting edges formed from a superhard abrasive material, and methods of making the same.
- Indexable cutting inserts using a superhand material for cutting typically have a polygonal shape with the superhard material disposed at the corners of the polygon.
- the superhard material often a cubic boron nitride or polycrystalline diamond material, aids in the cutting of hard workpiece 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 workpiece. After being used for a period of time, the area of superhard material becomes worn. The cutting insert can then be unfastened from the cutting tool and rotated so as to present a new fresh corner or area of superhard material to the surface of the workpiece.
- 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 corner thereof.
- U.S. Pat. No. 5,183,362 to Kuroyama et al. the disclosure of which is incorporated herein by reference, in its entirety, describes such a technique.
- 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.
- Another problem posed by such techniques is that the extent of superhard material presented to the workpiece and available for wear is limited, thus limiting the useful operating period for that particular cutting edge.
- 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.
- the present invention provides devices and methods that address the above-mentioned problems, and others.
- the present invention provides improved indexable cutting inserts and improved methods of producing the same.
- the present invention provides a method making a cutting insert comprising forming a layer of superhard material, forming a hole in said layer, attaching said layer onto a commented carbide substrate also having a hole corresponding to the hole in said superhard layer, and attaching a preformed annular body within said holes.
- the present invention provides a cutting insert a cutting insert comprising a base portion of a commented carbide, a layer of superhard material attached to said base and a hole through both said base portion and layer, said hole extending generally corrically from said layer through said base.
- FIG. 1 is a top view of a blank or preform constructed according to the principles of the present invention.
- FIG. 2 is a side view of the blank of FIG. 1 .
- FIG. 4 is a side view of the blank of FIG. 5 .
- a blank is formed from a superhard cutting material.
- the blank can also be formed from a hard material and a superhard cutting material.
- An illustrative embodiment of such a blank is shown in FIGS. 1 and 2 .
- the blank 10 comprises a top layer or portion 11 of a superhard material and a bottom layer or portion 12 of a hard material. While the blank 10 is illustrated as having a polygonal-like shape, other geometries are clearly possible, such as a disk.
- the superhard cutting material and the hard material are sintered together using conventional pressing and sintering techniques to form a solid shape.
- a central hole 13 may be formed during the pressing and sintering but is preferably machined after sintering.
- the hole 13 is designed so as to receive an appropriate mounting means, e.g., a screw, when the finally prepared insert is to be mounted in an appropriate holder.
- the shape of the central hole is defined by a preformed cemented carbide insert 14 which is brazed into place in the central hole 13 .
- this cemented carbide insert 14 can be preformed into any particular shape necessary for the ultimate mounting.
- the cemented carbide of insert 14 is the same as that of layer 12 .
- a chip breaking geometry may be formed (e.g., by EDM) on the appropriate surfaces of the superhard layer.
- the insert 14 is preferably preformed into a shape in which the inner walls 15 converge in a generally conical manner from the top of the superhard layer 11 towards the bottom of the hard material 12 .
- Such a design assists in securing the screw (not shown) firmly within the central hole when attaching the insert to the holder.
- FIG. 1 there is indicated in dotted lines 14 a circle in which round inserts can be formed, if desired, of the superhard material and cemented carbide.
- FIGS. 3 and 4 depicts another embodiment of the invention.
- the superhard cutting material 31 is first made with a shape such as described in Provisional Patent Application No. 60/474,956, herein incorporated by reference in its entirety, and cut into the particular shape as shown.
- the cemented carbide is either made in one piece or made as two pieces 32 and 34 as shown brazed together along braze lines 36 and 37 .
- the central hole 33 may be shaped by the perform 34 to the desired shape for ultimate mounting.
- line 38 depicts the final shape of a cutting insert to be formed from perform 32 .
- center hole 13 is cut to a size sufficient to allow the cemented carbide insert 14 to be brazed into that hole, it should be understood, particularly if the initial blank is of sufficient size, that the material removed from the blank to form the center hole 13 may itself serve as a blank for the preparation of another, albeit smaller, cutting insert.
- the substrate 12 is formed from 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 to 20 weight % Co, and preferably having 15 to 17 weight % Co.
- the superhard material 11 can comprise any suitable material chosen for its cutting characteristics.
- the superhard material 11 can comprise a boron nitride, such as cubic boron nitride (CBN), or a diamond material such as polycrystalline diamond (PCD).
- CBN or PCD material may have additions of other materials, such as carbides, nitrides, carbonitrides, oxides, and/or borides of metals chosen from groups IVa to Vla of the periodic table.
- the superhard material 16 can be in the form of a composite of CBN or PCD particles forming a first phase, and at least a second phase of a semiconductor (e.g.—Si), metal (e.g.—Cu, Ti, Al), metalloid, or alloys thereof.
- the sintering type treatment can be performed at elevated temperatures and pressures as described, for example, in U.S. Pat. No. 5,676,496. Examples of suitable processes are described, for example, in U.S. Pat. Nos. 4,991,467 and 5,115,697, the disclosures of which are incorporated herein by reference, in their entirety.
- the cutting tips 31 can be formed from a disk by any suitable cutting or material removal/separation procedure. Once such procedure is wire cutting, such as EDM wire cutting.
- the cutting tips can be provided with any suitable geometry.
- the cutting tips 31 are provided with a geometry that will provide a mechanical retention or lock when placed within the body of an indexable cutting insert in addition to the brazed joints, as will be described in more detail. Acording to the illustrated embodiment of FIG. 3 , a cutting tip 31 which is removed from the blank 10 has a geometry or shape that can generally be characterized as a dovetail shape or geometry.
- FIG. 3 A specific illustrative example of this type of cutting tip geometry comprehended by the present invention is illustrated in FIG. 3 .
- the geometry or shape of the cutting tip 31 illustrated in FIG. 3 can be described as follows.
- a pair of converging forward surfaces 42 a and 42 b meet at a forward nose 44 , which is preferably rounded.
- the nose 44 is presented to the workpiece during use of the cutting tip.
- a portion of the surfaces 42 a and 42 b , and the nose 44 comprise superhard cutting material 31 .
- the extent of superhard cutting material 31 extending from the apex of the nose 44 and back along surfaces 42 a and 42 b corresponds to dimension “L”, and can be termed the leg length.
- the dimension L is at least 2 mm.
- the dimension L can be at least 3 mm.
- the waisted section is defined by a first pair of angled surfaces 46 a and 46 b , as well as a second set of surfaces 48 a and 48 b .
- Surfaces 46 a and 48 a , as well as 46 b and 48 b meet at the area of reduced width and define a trough-like formation.
- the cutting tip may also comprise a planar rear surface 49 .
Abstract
Description
- The present invention relates to cutting inserts having cutting edges formed from a superhard abrasive material, and methods of making the same.
- In the description of the background of the present invention that follows reference is made to certain structures and methods, however, such references should not necessarily be construed as an admission that these structures and methods qualify as prior art under the applicable statutory provisions. Applicants reserve the right to demonstrate that any of the referenced subject matter does not constitute prior art with regard to the present invention.
- Indexable cutting inserts using a superhand material for cutting typically have a polygonal shape with the superhard material disposed at the corners of the polygon. The superhard material, often a cubic boron nitride or polycrystalline diamond material, aids in the cutting of hard workpiece 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 workpiece. After being used for a period of time, the area of superhard material becomes worn. The cutting insert can then be unfastened from the cutting tool and rotated so as to present a new fresh corner or area of superhard material to the surface of the workpiece.
- 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. Pat. No. 5,183,362 to Kuroyama et al., the disclosure of which is incorporated herein by reference, in its entirety, describes such a technique.
- 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. Another problem posed by such techniques is that the extent of superhard material presented to the workpiece and available for wear is limited, thus limiting the useful operating period for that particular cutting edge.
- 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. Pat. No. 5,676,496, the disclosure of which is incorporated herein by reference, in its entirety, describes such a technique.
- Such techniques also present certain difficulties. The process by which the superhard material is bonded to the blank or substrate is difficult and costly. In this regard, the cost of the superhard and substrate raw materials are relatively minor when compared with the costs associated with the process cycle necessary to join them. Thus, from a production efficiency point of view it would seem preferable to form an indexable insert with many corners containing superhard material. That way, the number of costly joining process cycles could be minimized while producing inserts that had many cutting corners. However, customers of such cutting inserts seem to strongly favor cutting inserts having relatively few cutting corners, which are more costly to make on a per unit basis using this technique. Most cutting inserts sold have only 24 cutting corners.
- 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. Yet another disadvantage or inefficiency is that only a single cutting insert is produced from each costly and difficult process cycle.
- In general, such superhard material-containing inserts have been held in place by an external (e.g., top) clamp. See, for example,
FIG. 25 of U.S. Pat. No. 5,183,362 which shows a top clamp with a preformed, separate chip breaker. Another type of clamping used with other types of cutting inserts involves the use of a screw which passes through a hole in the insert, often in the center of the insert. Such holes may be straight or involve an offset portion to assist in seaming the insert. See, for example, U.S. Pat. No. 5,147,158 which discloses in cross-section a “trumpet” style of central hole for securing purposes. Laser cutting or EDM (electro-discharge machining is used to cut the superhard material and it can be appreciated that machining of a “trumpet” style hole in the superhard material is quite difficult and expensive to do. In addition, the accuracy of such cuts is problematic. - Thus, a need exists in the art to address the problems discussed above and others.
- The present invention provides devices and methods that address the above-mentioned problems, and others.
- The present invention provides improved indexable cutting inserts and improved methods of producing the same.
- According to one aspect, the present invention provides a method making a cutting insert comprising forming a layer of superhard material, forming a hole in said layer, attaching said layer onto a commented carbide substrate also having a hole corresponding to the hole in said superhard layer, and attaching a preformed annular body within said holes.
- According to further aspect, the present invention provides a cutting insert a cutting insert comprising a base portion of a commented carbide, a layer of superhard material attached to said base and a hole through both said base portion and layer, said hole extending generally corrically from said layer through said base.
-
FIG. 1 is a top view of a blank or preform constructed according to the principles of the present invention. -
FIG. 2 is a side view of the blank ofFIG. 1 . -
FIG. 3 is a top view of another embodiment according to the principles of the present invention. -
FIG. 4 is a side view of the blank ofFIG. 5 . - Exemplary arrangements and techniques according to the present invention will now be described by reference to the drawing figures.
- According to the present invention, a blank is formed from a superhard cutting material. The blank can also be formed from a hard material and a superhard cutting material. An illustrative embodiment of such a blank is shown in
FIGS. 1 and 2 . As shown therein, the blank 10 comprises a top layer orportion 11 of a superhard material and a bottom layer orportion 12 of a hard material. While the blank 10 is illustrated as having a polygonal-like shape, other geometries are clearly possible, such as a disk. - Generally, the superhard cutting material and the hard material are sintered together using conventional pressing and sintering techniques to form a solid shape. A
central hole 13 may be formed during the pressing and sintering but is preferably machined after sintering. Thehole 13 is designed so as to receive an appropriate mounting means, e.g., a screw, when the finally prepared insert is to be mounted in an appropriate holder. - In the embodiment of
FIGS. 1 and 2 , the shape of the central hole is defined by a preformed cementedcarbide insert 14 which is brazed into place in thecentral hole 13. It will be appreciated that this cementedcarbide insert 14 can be preformed into any particular shape necessary for the ultimate mounting. By performing the cementedcarbide body 14 by pressing and sintering, various shapes of the central hole can be accurately and relatively easily made. Preferably, the cemented carbide ofinsert 14 is the same as that oflayer 12. If desired, a chip breaking geometry may be formed (e.g., by EDM) on the appropriate surfaces of the superhard layer. - As shown in
FIG. 2 , theinsert 14 is preferably preformed into a shape in which the inner walls 15 converge in a generally conical manner from the top of thesuperhard layer 11 towards the bottom of thehard material 12. Such a design assists in securing the screw (not shown) firmly within the central hole when attaching the insert to the holder. - In
FIG. 1 , there is indicated in dotted lines 14 a circle in which round inserts can be formed, if desired, of the superhard material and cemented carbide. -
FIGS. 3 and 4 depicts another embodiment of the invention. In this aspect, thesuperhard cutting material 31 is first made with a shape such as described in Provisional Patent Application No. 60/474,956, herein incorporated by reference in its entirety, and cut into the particular shape as shown. The cemented carbide is either made in one piece or made as twopieces braze lines central hole 33 may be shaped by theperform 34 to the desired shape for ultimate mounting. InFIG. 4 ,line 38 depicts the final shape of a cutting insert to be formed fromperform 32. Although the description has indicated that thecenter hole 13 is cut to a size sufficient to allow the cementedcarbide insert 14 to be brazed into that hole, it should be understood, particularly if the initial blank is of sufficient size, that the material removed from the blank to form thecenter hole 13 may itself serve as a blank for the preparation of another, albeit smaller, cutting insert. - 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 to 20 weight % Co, and preferably having 15 to 17 weight % Co. Thesuperhard material 11 can comprise any suitable material chosen for its cutting characteristics. - The
superhard material 11 can comprise a boron nitride, such as cubic boron nitride (CBN), or a diamond material such as polycrystalline diamond (PCD). The CBN or PCD material may have additions of other materials, such as carbides, nitrides, carbonitrides, oxides, and/or borides of metals chosen from groups IVa to Vla of the periodic table. The superhard material 16 can be in the form of a composite of CBN or PCD particles forming a first phase, and at least a second phase of a semiconductor (e.g.—Si), metal (e.g.—Cu, Ti, Al), metalloid, or alloys thereof. - The sintering type treatment can be performed at elevated temperatures and pressures as described, for example, in U.S. Pat. No. 5,676,496. Examples of suitable processes are described, for example, in U.S. Pat. Nos. 4,991,467 and 5,115,697, the disclosures of which are incorporated herein by reference, in their entirety.
- The cutting
tips 31 can be formed from a disk by any suitable cutting or material removal/separation procedure. Once such procedure is wire cutting, such as EDM wire cutting. - The cutting tips can be provided with any suitable geometry. According to one advantageous aspect of the present invention, the cutting
tips 31 are provided with a geometry that will provide a mechanical retention or lock when placed within the body of an indexable cutting insert in addition to the brazed joints, as will be described in more detail. Acording to the illustrated embodiment ofFIG. 3 , a cuttingtip 31 which is removed from the blank 10 has a geometry or shape that can generally be characterized as a dovetail shape or geometry. - A specific illustrative example of this type of cutting tip geometry comprehended by the present invention is illustrated in
FIG. 3 . The geometry or shape of the cuttingtip 31 illustrated inFIG. 3 can be described as follows. A pair of converging forward surfaces 42 a and 42 b meet at aforward nose 44, which is preferably rounded. Thenose 44 is presented to the workpiece during use of the cutting tip. As illustrated inFIG. 3 , a portion of thesurfaces nose 44 comprise superhard cuttingmaterial 31. The extent ofsuperhard cutting material 31 extending from the apex of thenose 44 and back alongsurfaces - Moving in the direction away from the
forward nose 44, subsequent to the convergingsurfaces waisted section 45. The waisted section is defined by a first pair ofangled surfaces 46 a and 46 b, as well as a second set ofsurfaces Surfaces 46 a and 48 a, as well as 46 b and 48 b meet at the area of reduced width and define a trough-like formation. The cutting tip may also comprise a planarrear surface 49. - Numerous modifications to the above-described geometry are contemplated, so long as the insert geometry provides a self-locating, self-retention property when placed in a cutting insert body.
- Additional advantages will be evident to those of ordinary skill in the art.
- The described embodiments of the present invention are intended to be illustrative rather than restrictive, and are not intended to represent every possible embodiment of the present invention. Various modifications can be made to the disclosed embodiments without departing form the spirit or scope of the invention as set forth in the following claims, both literally and in equivalents recognized by law.
Claims (11)
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
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US10/857,922 US20050271483A1 (en) | 2004-06-02 | 2004-06-02 | Indexable cutting inserts and methods for producing the same |
EP05756188.8A EP1755812B1 (en) | 2004-06-02 | 2005-06-02 | Indexable cutting inserts and methods for producing the same |
CNB2005800181006A CN100522425C (en) | 2004-06-02 | 2005-06-02 | Indexable cutting inserts and methods for producing the same |
KR1020067024541A KR101280880B1 (en) | 2004-06-02 | 2005-06-02 | Cutting inserts and methods for producing the same |
US11/142,191 US7407348B2 (en) | 2004-06-02 | 2005-06-02 | Indexable cutting inserts and methods for producing the same |
PCT/US2005/019321 WO2005118188A2 (en) | 2004-06-02 | 2005-06-02 | Indexable cutting inserts and methods for producing the same |
JP2007515544A JP4988566B2 (en) | 2004-06-02 | 2005-06-02 | Indexable cutting insert and manufacturing method thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/857,922 US20050271483A1 (en) | 2004-06-02 | 2004-06-02 | Indexable cutting inserts and methods for producing the same |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US11/142,191 Continuation-In-Part US7407348B2 (en) | 2004-06-02 | 2005-06-02 | Indexable cutting inserts and methods for producing the same |
Publications (1)
Publication Number | Publication Date |
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US20050271483A1 true US20050271483A1 (en) | 2005-12-08 |
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ID=35428366
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
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US10/857,922 Abandoned US20050271483A1 (en) | 2004-06-02 | 2004-06-02 | Indexable cutting inserts and methods for producing the same |
US11/142,191 Active US7407348B2 (en) | 2004-06-02 | 2005-06-02 | Indexable cutting inserts and methods for producing the same |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
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US11/142,191 Active US7407348B2 (en) | 2004-06-02 | 2005-06-02 | Indexable cutting inserts and methods for producing the same |
Country Status (6)
Country | Link |
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US (2) | US20050271483A1 (en) |
EP (1) | EP1755812B1 (en) |
JP (1) | JP4988566B2 (en) |
KR (1) | KR101280880B1 (en) |
CN (1) | CN100522425C (en) |
WO (1) | WO2005118188A2 (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050152804A1 (en) * | 2003-06-03 | 2005-07-14 | 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 |
US20060234086A1 (en) * | 2005-03-16 | 2006-10-19 | Clas Sjogren | Metal cutting inserts with abrasive bodies |
US20070201962A1 (en) * | 2006-01-30 | 2007-08-30 | Sandvik Intellectual Property Ab | Drill and drill a cutting insert |
US20070245866A1 (en) * | 2006-04-25 | 2007-10-25 | Seco Tools Ab | Threading tool, threading insert, and method of forming a thread |
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US7824134B2 (en) | 2003-05-14 | 2010-11-02 | Diamond Innovations, Inc. | Cutting tool inserts and methods to manufacture |
US20080138162A1 (en) * | 2003-05-14 | 2008-06-12 | Diamond Innovations, Inc. | Cutting tool inserts and methods to manufacture |
US20050152804A1 (en) * | 2003-06-03 | 2005-07-14 | Sandvik Ab | Indexable cutting inserts and methods for producing the same |
US8161850B2 (en) | 2003-06-03 | 2012-04-24 | Sandvik Intellectual Property Ab | Indexable cutting inserts and methods for producing the same |
US7360972B2 (en) * | 2003-06-03 | 2008-04-22 | Sandvik Intellectual Property 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 |
US20060234086A1 (en) * | 2005-03-16 | 2006-10-19 | Clas Sjogren | Metal cutting inserts with abrasive bodies |
US7393161B2 (en) | 2005-03-16 | 2008-07-01 | Sandvik Intellectual Property Ab | Metal cutting inserts with abrasive bodies |
US20080226405A1 (en) * | 2005-03-16 | 2008-09-18 | Sandvik Intellectual Property Ab | Metal cutting inserts with abrasive bodies |
US20070201962A1 (en) * | 2006-01-30 | 2007-08-30 | Sandvik Intellectual Property Ab | Drill and drill a cutting insert |
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US20090252566A1 (en) * | 2006-02-02 | 2009-10-08 | Kennametal Inc. | Cutting insert |
EP1991383A2 (en) * | 2006-03-06 | 2008-11-19 | Diamond Innovations, Inc. | Cutting tool insert with molded insert body |
EP1991383A4 (en) * | 2006-03-06 | 2011-01-19 | Diamond Innovations Inc | Cutting tool insert with molded insert body |
US20070245866A1 (en) * | 2006-04-25 | 2007-10-25 | Seco Tools Ab | Threading tool, threading insert, and method of forming a thread |
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US7476063B2 (en) | 2006-04-25 | 2009-01-13 | Seco Tools Ab | Threading tool, threading insert, and method of forming a thread |
US20120282046A1 (en) * | 2010-01-07 | 2012-11-08 | Alan Taylor | Machining tool and method of manufacturing same |
US9242299B2 (en) * | 2010-01-07 | 2016-01-26 | Gkn Sinter Metals, Llc | Machining tool and method of manufacturing same |
WO2012007429A1 (en) * | 2010-07-13 | 2012-01-19 | Element Six Limited | Indexable cutter insert, construction for same and method for making same |
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US8795460B2 (en) | 2010-07-13 | 2014-08-05 | Element Six Limited | Indexable cutter insert, construction for same and method for making same |
US9089900B2 (en) | 2010-12-31 | 2015-07-28 | Diamond Innovations, Inc. | Method of producing holes and countersinks in polycrystalline bodies |
WO2019077597A1 (en) * | 2017-10-16 | 2019-04-25 | Iscar Ltd. | Cutting tool and undersized bore-less indexable insert therefor |
US11241747B2 (en) | 2017-10-16 | 2022-02-08 | Iscar, Ltd. | Cutting tool and undersized bore-less indexable insert therefor |
WO2023177569A1 (en) * | 2022-03-17 | 2023-09-21 | Us Synthetic Corporation | Superhard cutting elements, cutting tools including the same, and methods of using the same |
Also Published As
Publication number | Publication date |
---|---|
KR101280880B1 (en) | 2013-07-03 |
WO2005118188A2 (en) | 2005-12-15 |
US20060147280A1 (en) | 2006-07-06 |
EP1755812A2 (en) | 2007-02-28 |
WO2005118188A3 (en) | 2006-01-26 |
CN100522425C (en) | 2009-08-05 |
CN1964807A (en) | 2007-05-16 |
EP1755812B1 (en) | 2017-09-27 |
JP4988566B2 (en) | 2012-08-01 |
JP2008501539A (en) | 2008-01-24 |
US7407348B2 (en) | 2008-08-05 |
KR20070015435A (en) | 2007-02-02 |
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