WO2006103899A1 - 刃先交換型切削チップ - Google Patents
刃先交換型切削チップ Download PDFInfo
- Publication number
- WO2006103899A1 WO2006103899A1 PCT/JP2006/304702 JP2006304702W WO2006103899A1 WO 2006103899 A1 WO2006103899 A1 WO 2006103899A1 JP 2006304702 W JP2006304702 W JP 2006304702W WO 2006103899 A1 WO2006103899 A1 WO 2006103899A1
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- WIPO (PCT)
- Prior art keywords
- layer
- cutting
- tip
- cutting edge
- cutting tip
- Prior art date
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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
- 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
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/16—Milling-cutters characterised by physical features other than shape
- B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
-
- 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
- B23B2200/00—Details of cutting inserts
- B23B2200/16—Supporting or bottom surfaces
- B23B2200/164—Supporting or bottom surfaces ground
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2200/00—Details of cutting inserts
- B23B2200/16—Supporting or bottom surfaces
- B23B2200/165—Supporting or bottom surfaces with one or more grooves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2200/00—Details of cutting inserts
- B23B2200/16—Supporting or bottom surfaces
- B23B2200/167—Supporting or bottom surfaces with serrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2228/00—Properties of materials of tools or workpieces, materials of tools or workpieces applied in a specific manner
- B23B2228/10—Coatings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2228/00—Properties of materials of tools or workpieces, materials of tools or workpieces applied in a specific manner
- B23B2228/10—Coatings
- B23B2228/105—Coatings with specified thickness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2228/00—Properties of materials of tools or workpieces, materials of tools or workpieces applied in a specific manner
- B23C2228/10—Coating
-
- 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 a cutting edge replaceable cutting tip (a throwaway tip) that is detachably attached to a cutting tool and used for cutting a work material.
- a cutting edge-exchangeable cutting tip Conventionally, various kinds of work materials have been cut by attaching a cutting edge-exchangeable cutting tip to a cutting tool in a detachable manner.
- a blade-tip-exchangeable cutting tip is usually composed of an upper surface 32, a side surface 33 and a lower surface 35 as shown in FIG. 12, and the lower surface 35 is usually attached to a cutting tool in a detachable state.
- the surface that can be attached to the cutting tool in a detachable manner is called the seating surface.
- the seat surface is the lower surface 35
- the upper surface 32 is located on the side in contact with the chips when the work material is cut, and is called a rake surface.
- the side surface 33 is located on the side in contact with the work material itself, and this is called the flank surface.
- a portion corresponding to the ridge 34 where the rake face and the flank face intersect is called a cutting edge ridge line portion, which is a portion mainly involved in cutting.
- Such blade-tip-exchangeable cutting tips are often configured with the surface of the substrate 10 covered with a hard substance 41 as shown in FIG.
- Blade runout refers to the fact that when a blade-tip-exchangeable cutting tip is attached to a cutting tool, the attachment position (blade height) must be constant. This means reducing the occurrence of blade runout. If the blade runout increases, the cutting accuracy is impaired, and the appearance quality of the work material deteriorates.
- Patent Document 1 Japanese Patent No. 2751277 (Japanese Patent Laid-Open No. 02-163361)
- the present invention has been made in view of the above-described situation, and an object of the present invention is to provide a blade-tip-exchangeable cutting tip with a particularly improved blade runout accuracy.
- the present inventor has intensively studied to solve the above-described problems. As a result, when the smoothness of the seating surface of the blade-tip-exchangeable cutting tip is improved, the blade-tip-exchangeable cutting tip is attached to the cutting tool. The inventor has obtained the knowledge that the runout accuracy will be improved, and based on this knowledge, further studies have been made, and the present invention has finally been completed.
- the blade-tip-exchangeable cutting tip of the present invention is a blade-tip-exchangeable cutting tip having a structure including at least a rake face and a seating surface, and a base material and a coating layer formed on the base material
- the seating surface is characterized in that the base material is exposed on the surface without the coating layer being formed.
- the seat surface is preferably a polished surface that has been polished.
- the coating layer is composed of an IVa group element (Ti, Zr, Hf, etc.), a Va group element (V, Nb, Ta, etc.), a Via group element (Cr, Mo, W, etc.) of the periodic table of elements. ), Formed by a compound composed of at least one element selected from the group consisting of Al and Si and at least one element selected from the group force consisting of carbon, nitrogen, oxygen and boron Of layers can be included.
- the coating layer may include at least a TiBN layer that preferably includes at least an aluminum oxide layer and an aluminum oxide layer formed thereon, and a TiBNO layer. And at least an aluminum oxide layer formed thereon Can be. Further, the coating layer should remove at least the layer other than the acid aluminum layer present on the acid aluminum layer where it is preferable that the outermost layer at the part involved in cutting is an acid aluminum layer. As a result, at least the outermost layer involved in cutting can be made into an acid aluminum layer. In addition, it is preferable that the aluminum oxide layer has a compressive residual stress.
- the coating layer can include a base layer and a use state display layer formed on the base layer, and the use state display layer is on a rake face and is a part related to cutting. It is preferably formed on the entire base layer or a part of the base layer excluding.
- the use state display layer is preferably formed on the entire surface or a part of the base layer on the flank.
- the base material is composed of any one of cemented carbide, cermet, high-speed steel, ceramics, cubic boron nitride sintered body, diamond sintered body, or silicon nitride sintered body. Is preferred.
- the above-mentioned cutting edge-exchangeable cutting tip is used for drilling, end milling, milling, turning, metal saw processing, cutting tool processing, reaming, tapping, or crankshaft. It is preferably one for pin milling baskets and a positive tip!
- the blade tip replaceable cutting tip of the present invention has a particularly improved blade runout accuracy by adopting the above-described configuration.
- FIG. 1 is a schematic perspective view showing a blade-tip-exchangeable cutting tip.
- FIG. 2 is a schematic cross-sectional view taken along line II-II in FIG.
- FIG. 3 is a schematic cross-sectional view of a cutting edge-exchangeable cutting tip having a recess on a seating surface.
- FIG. 4 is a schematic enlarged sectional view of a recess.
- FIG. 5 is a schematic perspective view showing a blade-tip-exchangeable cutting tip having a through hole.
- FIG. 6 is a schematic sectional view taken along line VI—VI in FIG.
- the usage status display layer is formed on the rake face excluding the part involved in cutting. It is a schematic sectional drawing of the done blade edge
- FIG. 8 is a schematic cross-sectional view of a blade-tip-exchangeable cutting tip in which a use state display layer is formed on the flank.
- FIG. 9 is a schematic cross-sectional view of a blade-tip-exchange-type cutting tip formed on a portion excluding a portion related to cutting on a flank face with a use state display layer.
- FIG. 10 The cutting edge formed on the rake face and excluding the part related to cutting, and the cutting edge formed on the flank and excluding the part related to cutting. It is a schematic sectional drawing of an exchange type cutting tip.
- FIG. 11 is a schematic cross-sectional view of a blade-tip-exchangeable cutting tip in which a use state display layer is formed on a hole wall of a through hole.
- FIG. 12 is a schematic perspective view showing a conventional cutting edge-exchangeable cutting tip.
- FIG. 13 is a schematic cross-sectional view taken along the line VIII--X in FIG.
- FIG. 14 is a schematic cross-sectional view of a conventional cutting edge replacement type cutting tip in which a hard material is not covered on a part of the lower surface.
- the cutting edge-exchangeable cutting tip of the present invention is detachably attached to various cutting tools and used for cutting various work materials.
- a blade-tip-exchangeable cutting chip 1 has a structure including at least a rake face 2 and a seating face 5 as shown in FIG.
- the rake face 2 sandwiches the cutting edge ridge part 4 together with the flank face 3, and the rake face 2 and the flank face 3 are connected via the cutting edge ridge line part 4.
- the seating surface 5 is arranged at a position corresponding to the lower surface when the rake surface 2 is the upper surface, and is a part attached to the cutting tool.
- Such a blade-tip-exchangeable cutting tip includes a base material 10 and a coating layer 11 formed on the base material on a surface other than the seating surface 5 as shown in FIG.
- the base material 10 is exposed on the surface without the formation of the coating layer 11 on the seating surface.
- FIG. 2 is a schematic cross-sectional view
- the covering layer 11 is composed of only one layer! , Expressed like!
- the coating layer of the present invention is not limited to such an embodiment as described later.
- Such a cutting edge-exchangeable cutting tip is, for example, for use in doreno reconnaissance, for endino reclamation, for frying, for turning, for metal sawing, for gear cutting tools, for reamer processing, for taps It can be applied to any application for use in a crankshaft or for pin milling of a crankshaft.
- the shape of the cutting edge replacement type cutting tip of the present invention is not particularly limited, but is preferably a positive type tip (a rake face and a flank face intersect at an acute angle). Good. This is because the positive type chip is configured to use only one of the upper and lower surfaces, so that the area of the seating surface is generally increased and the effects of the present invention are easily exhibited. However, it also includes single-sided negative-type tips (those that cross the surface and flank at an angle of 90 ° or more) and vertical-type tips. Moreover, such a blade-tip-exchangeable cutting tip of the present invention includes those having a chip breaker and those having no chip breaker.
- the edge of the edge of the blade edge is sharp edge (the ridge where the rake face and flank face intersect), honing (the sharp edge is rounded), negative land (the chamfered), and hounging. Any combination of negative lands is included.
- the blade-tip-exchangeable cutting tip of the present invention has a through-hole 7 used as a fixing hole for attaching the blade-tip-exchangeable cutting chip 1 to a cutting tool, and a rake face 2 And may be formed so as to penetrate the seating surface 5. If necessary, another fixing means can be provided in addition to or instead of the fixing hole.
- the seating surface of the cutting edge-exchangeable cutting tip of the present invention is characterized in that the base material is exposed on the surface without forming a coating layer.
- the coating layer formed on the seat surface is removed or a coating layer is formed on the seat surface from the beginning.
- a seating surface is preferably a polished surface that has been polished.
- the polished surface in the present invention refers to a surface flattened by polishing or grinding (hereinafter simply referred to as polishing) on a substrate (unprocessed sintered skin). Good, preferably surface roughness R (arithmetic mean height, JIS B0601:
- This surface roughness R is more preferably 0.2 ⁇ m or less, even more preferably 0.15 ⁇ m or less, particularly preferably a
- the surface is 0.1 ⁇ m or less.
- the surface roughness R is 0.5 ⁇ m or less.
- polishing treatment a conventionally known treatment method can be employed without any particular limitation.
- a diamond grinding wheel, a SiC grinding wheel, a resin bond grinding wheel, a coasting grinding stone, an electrodeposition gunstone, a shot blasting, a wet blasting, a diamond brush, a SiC brush, a puff cloth, and the like can be exemplified.
- the seating surface is configured as described above, so that the seating stability can be remarkably improved when mounted on a cutting tool, and the blade runout accuracy can be particularly improved. It became. Such an excellent effect can be obtained when the seat surface is an untreated surface (sintered skin) of the base material as it is or when a coating layer is formed on a specific part of the seat surface as in Patent Document 1. This is a special effect.
- the cutting edge-exchangeable cutting tip of the present invention has a seat surface 5 that has a cover layer 11 covering the seat surface 5 removed or a coating layer 11 from the beginning. As a result of the formation of, the portion of the substrate 10 is exposed on the surface.
- the covering layer 11 is coated after the base material 10 of the seating surface has been previously polished!
- the seating surface 5 can be made a polished surface only by removing the coating layer 11 by blasting or grinding with various grinding stones.
- a polishing process may be performed by further performing a polishing process.
- the coating layer 11 is coated while the base material 10 of the seating surface remains an untreated surface (sintered skin)
- the coating layer 11 is removed by blasting or the like, and the exposed substrate is further exposed. It is preferable that the surface of the material 10 is polished by polishing.
- the covering layer 11 is not initially formed on the seating surface 5 by masking the seating surface 5 (for example, when a coating layer described later is formed by PVD, the seating surface is masked using a jig).
- the polishing treatment for the seating surface 5 can be performed either before or after the coating treatment of the coating layer 11 and can be performed both before and after.
- the coating layer 11 does not exist at all over the entire seating surface 5, but the base material is exposed on the surface of the seating surface of the present invention. Is not limited to such a configuration.
- a portion hereinafter simply referred to as a recess
- the coating layer 11 is formed in the recess 6. Even if it remains, it does not depart from the scope of the present invention. That is, as shown in FIG. 4, even if the coating layer 11 remains in the recess 6 of the seating surface, even if the seating surface is removed, the seating layer is subjected to a force or formation.
- the base material is exposed on the surface (that is, without forming the covering layer) (in other words, the flat surface excluding the recess 6 constitutes the seating surface). This is because such a remaining coating layer does not affect the seating stability when the cutting edge-exchangeable cutting tip is attached to the cutting tool.
- the surface roughness R in the recess 6 is not limited to any force other than the recess 6 which may be greater than 0.5 m, regardless of whether the covering layer 11 remains in the recess 6 or not.
- the seating surface is regarded as a polished surface.
- the covering layer 11 may be formed on the hole wall of the hole 7 as shown in FIG. 6, or may be formed!
- the polishing process for the seating surface 5 may be selectively performed only on the seating surface 5, but is performed on a surface other than the seating surface 5, that is, the rake surface 2 and the flank surface 3. There is no problem.
- a conventionally known material known as a base material for such a cutting edge-exchangeable cutting chip can be used without any particular limitation.
- cemented carbide for example, WC-based cemented carbide, WC, Co, or carbides such as Ti, Ta, Nb, nitrides, carbonitrides, etc.), cermet (Ti C, TiN, TiCN, etc.), high-speed steel, ceramics (such as titanium carbide, silicon carbide, silicon nitride, aluminum nitride, oxide aluminum, and mixtures thereof), orthorhombic type
- a base material include a boron nitride sintered body, a diamond sintered body, and a silicon nitride sintered body.
- these base materials may have modified surfaces.
- a de-j8 layer is formed on the surface, and in the case of cermet, a hardened surface layer may be formed, or the surface may be modified in this way. The effect of the present invention is shown.
- the coating layer of the present invention is formed on a base material, and exhibits an effect of improving properties such as toughness and wear resistance, and greatly improving durability (life) of a blade-tip-exchangeable cutting tip. It is.
- Such a coating layer is composed of at least one element selected from group IVa elements, group Va elements, group Via elements, Al, and S in the periodic table of elements, carbon, nitrogen, oxygen, And one or more layers formed by a compound composed of at least one element selected from the group force consisting of boron and boron.
- Suitable compounds constituting such a coating layer include, for example, TiC, TiN, TiCN, TiCNO, TiB, TiBN, TiBNO, TiCBN ⁇ ZrC, ZrO, HfC, HfN, TiAIN ⁇ AlCrN
- Such a coating layer preferably has a thickness of 0.01 ⁇ m or more and 20 ⁇ m or less (when formed of two or more layers, the total thickness). If the thickness is less than 0.01 / zm, the above advantageous characteristics may not be sufficiently exhibited, and if it exceeds 20 / zm, there is no significant difference in effect and it is economically disadvantageous.
- Such a coating layer can be directly formed on a substrate, and the formation method (film formation method) is a conventionally known chemical vapor deposition method (CVD method) or physical vapor deposition method (PVD method).
- CVD method chemical vapor deposition method
- PVD method physical vapor deposition method
- the formation method can be employed regardless of any method such as sputtering method.
- MT-CVD medium temperatu reCVD
- TiCN titanium carbonitride
- the conventional CVD method forms a film at about 10 20 to 1030 ° C, whereas the MT-CVD method can be performed at a relatively low temperature of about 850 to 950 ° C. They can reduce damage to the base material due to heating. Therefore, the layer formed by the MT-CVD method is more preferably provided close to the substrate. Further, it is preferable to use a nitrile gas, particularly acetonitrile (CH 3 CN), as the gas used for film formation because of excellent mass productivity.
- a nitrile gas particularly acetonitrile (CH 3 CN)
- the coating layer of the present invention preferably includes at least an aluminum oxide (Al 2 O 3) layer among the above-mentioned compounds. Wear resistance and welding resistance to work material
- the aluminum oxide layer has such excellent characteristics, but when coated with a base material, it shows a tendency that the film thickness becomes thicker at the edge (peripheral part) of each surface of the base material. Became clear by the inventor's research . For this reason, when the entire surface of the base material is covered with the layer, it is difficult to make the film thickness the same at the edge portion and the central portion (that is, to obtain flatness of the seating surface) on each surface of the base material. As a result, the blade runout accuracy was impaired.
- the present invention has a structure that does not have a coating layer on the seat surface as described above, and therefore exhibits an advantageous effect particularly when an acid-aluminum layer is included as the coating layer, and wear resistance.
- the blade runout accuracy is improved while exhibiting the excellent effect of improving the welding resistance to the work material.
- the aluminum oxide forming the coating layer of the present invention does not specifically limit the crystal structure, and includes, for example, a-A1 O, ⁇ Al O, and ⁇ Al O.
- the coating layer of the present invention is excellent in the wear resistance and the welding resistance to the work material as described above, so that at least the outermost layer involved in cutting is oxidized in the coating layer of the present invention. It is preferable to be composed of an aluminum layer.
- the part involved in cutting is a part substantially involved in the cutting of the work material (part that may come into contact with the chip of the work material), and specifically, the edge line part of the cutting edge.
- the edge of the cutting edge is a concept including sharp edges, hounging, negative land, and a combination of hounging and negative land.
- the surface of the acid aluminum layer is once oxidized on the entire surface of the acid aluminum layer in the manufacturing process of the cutting edge exchangeable cutting tip.
- a layer other than aluminum a layer that is formed as desired and is used for confirming the presence or absence of the use of a cutting edge called a display layer or a color layer (that is, a use state display layer described later), etc.
- it is formed by removing a layer other than the acid aluminum layer present on the acid aluminum layer. Power that excels in production efficiency
- the coating layer of the present invention may more preferably include at least a TiBN (titanium boronitride) layer and an acid film layer formed thereon.
- the TiBN layer has excellent adhesion to the aluminum oxide layer. Therefore, the TiBN layer can be effectively prevented from peeling by forming the TiBN layer as the lower layer of the acid / aluminum layer. it can .
- the acid-aluminum layer is easily peeled off during the polishing processing. In such a case, a particularly excellent effect can be exhibited.
- this TiBN layer has a yellow to gold color, this color is observed through the aluminum oxide layer, so that the chip can be given a yellowish appearance. .
- Such a TiBN layer is particularly TiBN (wherein X and Y are atomic%, respectively)
- the titanium boronitride force represented by the following formula is satisfied: 0.001 ⁇ X / (X + Y) ⁇ 0.04).
- the adhesion to aluminum oxide is particularly excellent, which is advantageous in solving the above-described peeling problem.
- ⁇ / ( ⁇ + ⁇ ) When ⁇ / ( ⁇ + ⁇ ) is 0.001 or less, the adhesion to the aluminum oxide layer may be inferior, and conversely when 0.04 or more, the reactivity with the work material is low. When this TiBN layer becomes higher and is exposed on the chip surface, it reacts with the work material, and the welded material may adhere firmly to the cutting edge and harm the appearance of the work material.
- X / (X + Y) is more preferably 0.003 ⁇ / ( ⁇ + ⁇ ) ⁇ 0.02. In the above formula, the atomic ratio between Ti and the total amount of ⁇ need not be 1: 1 as is conventionally known.
- the TiBN layer preferably has a thickness of 0.1 m or more and 3 ⁇ m or less, more preferably the upper limit thereof is lower and the lower limit thereof is 0.2 m or more. If the thickness is less than 0.1 ⁇ m, the effect of improving the adhesion with the oxyaluminum layer may not be sufficiently exhibited. Become.
- Such a TiBN layer can be formed directly on the base material, or can be formed on the base material via another layer.
- the formation method is not particularly limited to the conventional chemical vapor deposition method (CVD method) and physical vapor deposition method (PVD method). It is not limited.
- the coating layer of the present invention includes at least a TiBNO (titanium oxynitride) layer and an aluminum oxide layer formed thereon.
- TiBNO layer Similar to the TiBN layer, it has excellent adhesion to the aluminum oxide layer, so it effectively prevents the aluminum oxide layer from peeling off by forming the TiBNO layer as the lower layer of the aluminum oxide layer. can do.
- the acid film layer is peeled off during the polishing process. In such a case where it is easy to produce, a particularly excellent effect can be exhibited.
- this TiBNO layer exhibits a yellow to gold color, this color is observed through the aluminum oxide layer, so that the chip can be given a yellowish appearance. .
- Such a TiBNO layer is especially TiB N O (wherein X, Y, and
- ⁇ / ( ⁇ + ⁇ + ⁇ ) is 0.0005 or less, the adhesion to the aluminum oxide layer may be inferior, and conversely if 0.04 or more, When the TiBNO layer is exposed to the chip surface due to high reactivity, it may react with the work material, and the welded material may adhere firmly to the cutting edge and harm the appearance of the work material.
- XZ (X + Y + Z) is more preferably 0.003 ⁇ / ( ⁇ + ⁇ + ⁇ ⁇ .02.
- ⁇ 0, that is, when oxygen is not contained, a TiBN layer is formed.
- Z / (X + Y + Z) is 0.5 or more, the hardness of the film increases, but the toughness decreases and the May be deficient.
- ⁇ ( ⁇ + ⁇ + ⁇ ) is more preferably 0.505 ⁇ / ( ⁇ + ⁇ + ⁇ ) ⁇ 0.3.
- the atomic ratio between Ti and the total amount of ⁇ need not be 1: 1.
- the TiBNO layer is excellent in adhesion to the acid-aluminum aluminum layer in the same manner as the TiBN layer, but further exhibits a characteristic that the hardness is higher than that of the TiBN layer. .
- Such a TiBNO layer preferably has a thickness of 0.1 m to 3 ⁇ m. More preferably, the upper limit is 2 ⁇ m or less, and the lower limit is 0.2 ⁇ m or more. If the thickness is less than 0.1 ⁇ m, the effect of improving the adhesion with the oxyaluminum layer may not be sufficiently exhibited. Become.
- Such a TiBNO layer can be formed directly on the base material, or can be formed on the base material via another layer.
- the formation method is not particularly limited to the conventional chemical vapor deposition method (CVD method) and physical vapor deposition method (PVD method). It is not limited.
- the coating layer of the present invention it is preferable that at least one layer has a compressive residual stress. More preferably, the acid aluminum layer has a compressive residual stress. This is because excellent toughness can be obtained.
- the seating surface constitutes a polished surface and the coating layer is substantially absent there, the damage rate when attaching the blade-tip-exchangeable cutting tip to the cutting tool is low. In addition, it is preferable because it exhibits excellent fracture resistance during cutting.
- the compressive residual stress is a kind of internal stress (intrinsic strain) existing in the coating layer, and is represented by a numerical value of "one" (minus) (unit: "GPa” is used in the present invention). Stress. Therefore, the concept that the compressive residual stress is large indicates that the absolute value of the numerical value is large, and the concept that the compressive residual stress is small indicates that the absolute value force of the numerical value is small.
- the tensile residual stress is a kind of internal stress (intrinsic strain) existing in the coating layer, and it is a stress expressed by a numerical value of “+” (plus).
- the method of applying such compressive residual stress is not particularly limited.
- the blast treatment is performed on the coating layer after the formation.
- Compressive residual stress can be applied by performing processing such as shot peening, barrel processing, brush processing, and ion implantation processing.
- processing such as shot peening, barrel processing, brush processing, and ion implantation processing.
- the coating layer is formed by the PVD method, it is not necessary to perform the above-mentioned treatment because the compressive residual stress is already applied at the time of formation. However, even in this case, the above processing may be performed if desired.
- the compressive residual stress has an absolute value of preferably 0.2 GPa or more, more preferably 0.5 GPa or more. If the absolute value is less than 0.2 GPa, sufficient toughness is obtained. On the other hand, the greater the absolute value, the better the viewpoint of imparting toughness, but if the absolute value exceeds 8 GPa, the coating layer itself may peel off, which is not preferred. .
- the aluminum oxide layer has a compressive residual stress of 0.2 GPa or more, more preferably 0.5 GPa or more as an absolute value. Still more preferably, at least the outermost layer of the aluminum oxide layer that is involved in cutting has a compressive residual stress of 0.2 GPa or more, more preferably 0.5 GPa or more as its absolute value. . This is because the part is in direct contact with the work material during cutting, and is considered to be the part most related to fracture resistance.
- the residual stress (both compressive residual stress and the tensile residual stress) can be measured by sin 2 phi method using an X-ray stress measurement equipment.
- residual stress is 10 arbitrary points included in the coating layer (these points are preferably selected at a distance of 0.5 mm or more from each other so that the stress of the layer can be represented) the stress was measured by the sin 2 phi method it can be measured by determining the average value.
- Such X-ray sin 2 phi method using are those widely used method for measuring the residual stress of a polycrystalline material, for example "X-ray Stress Measurement” (Japan Society of Materials Science, 1981 The method described in detail on pages 54 to 67 of Yonkendo Inc.).
- the residual stress can also be measured by using a method using Raman spectroscopy.
- Raman spectroscopy has the advantage of being able to perform local measurements in a narrow range, such as a spot diameter of 1 ⁇ m and V !.
- the measurement of residual stress using such Raman spectroscopy is a common method, but for example, “Thin film mechanical property evaluation technique” (Sipec (currently renamed Realize Science and Technology Center), published in 1992). The method described on pages 264 to 271 can be employed.
- the coating layer of the present invention preferably includes a base layer and a use state display layer formed on the base layer.
- the base layer is mainly responsible for improving various characteristics such as wear resistance and toughness of the cutting edge replaceable cutting tip, while the use state indicating layer is mainly used for the edge of the cutting edge. It is responsible for identifying Z unused. But Therefore, it is preferable that the base layer and the usage state display layer have different colors and have a large color contrast.
- the use state display layer has a function of easily discoloring when adjacent edge edge portions are used. This discoloration may be such that the use state display layer itself changes color, or the appearance is as if the force has changed due to the underlying layer being exposed by peeling off the use state display layer. May be given. For this reason, it is preferable that the use state display layer is inferior in wear resistance to the base layer.
- the usage state display layer from the group IVa element, the group Va element, the group VIa element, Al, Si, Cu, Pt, Au, Ag, Pd, Fe, Co, and Ni in the periodic table And at least one layer selected from the group consisting of at least one metal (element) or an alloy containing the metal.
- the usage state display layer is preferably formed thinner than the base layer, and the preferable thickness (the total thickness when the usage state display layer is formed of two or more layers) is 0.05 ⁇ m. m or more and 2 ⁇ m or less, more preferably 0.1 ⁇ m or more and 0.5 ⁇ m or less. If it is less than 0.05 m, it is industrially difficult to uniformly coat a predetermined part, and this may cause color unevenness and damage the appearance. Moreover, even if it exceeds 2 m, it is economically disadvantageous because the function as the usage status display layer is largely different.
- such a use state display layer is formed on the rake face and on the entire surface of the portion excluding the portion involved in cutting or a portion thereof.
- the use state display layer is preferably formed on the entire surface or a part of the base layer on the flank.
- FIGS. 7 to 11 used in the following description show the case where the through hole 7 as shown in FIG. 5 is provided.
- the present invention can also be applied to a cutting edge-exchangeable cutting tip having no hole.
- FIG. 7 shows an embodiment in which the usage state display layer 13 is formed on the base layer 12 on the entire surface of the rake face 2 except for the part 9 involved in cutting.
- the width from the edge 4 of the cutting edge that defines the part 9 involved in cutting is actually the cutting edge replacement. It shall be defined based on the outline of the die cutting tip 1 (other widths shall be handled in the same way). This is because the thickness of the coating layer can be ignored when defining a width that is very thin compared to the thickness of the cutting edge-exchangeable cutting tip.
- FIG. 8 shows a state in which the use state display layer 13 is formed on the entire base layer 12 on the flank 3.
- the use state display layer 13 may be formed on the base layer 12 on the entire surface of the flank 3 except for the portion 91 involved in cutting.
- a portion 91 involved in cutting indicates a region on the flank surface excluding a region widened with a width of at least 0.01 mm from the edge ridge line portion 4 to the flank surface 3 direction.
- FIG. 10 shows that the use state display layer 13 is formed on the rake face 2 and formed on the entire base layer 12 except for the part 9 involved in cutting, and on the flank 3.
- the figure shows an embodiment formed on the base layer 12 on the entire surface excluding the portion 91 related to cutting.
- FIG. 11 shows the same mode as FIG. 7, but it is also used on the hole wall of the through hole 7. 7 is different from FIG. 7 in that the display layer 13 is formed.
- the use state display layer 13 is formed on the hole wall of the through hole 7! / It ’s okay! The effect of the present invention is shown even in the case of misalignment.
- the usage state display layer V is exemplified by an embodiment in which it is formed on the entire surface of each part. However, it may be formed on the part of the part!
- the coating layers were laminated on the surface of the base material in order from the left side.
- the coating layers Nos. 1 to 14 were formed by a known CVD method, and the coating layers Nos. 15 to 17 were formed by a known ion plating method.
- the cutting edge replacement type cutting tips of Nos. 18 to 36 are the corresponding cutting edge replacement types of Nos. 1 to 15, each having the same coating layer No. coating layer. It has the same structure as the cutting tip, but the entire surface of the coating layer is blasted (Abrasive particles: Alumina sand # 120 (average particle size 100 m), pressure: 0.3 MPa) Nos.
- 29, 31, 33, 35, and 36 are the outermost layers of the coating layer
- the TiN layer use state display layer
- the portion of the oxide-aluminum layer (base layer) (The outermost layer) was exposed and blasted until the acid-aluminum layer became the outermost layer), so that the coating layer (No. 29, 31, 33, 35, and 36 had the acid-aluminum layer as the outermost layer) (The part that became) has compressive residual stress. Effect of the present application are also shown in Yogu both its even without may be carried out against the).
- Tables 2-4 the coating layer to be measured and its stress value are described for the residual stress in the coating layer.
- the cutting edge-exchangeable cutting tips No. 37 to No. 39 were previously subjected to the same polishing treatment as described above on the seating surface of the base material, and then the seating surface was masked with a jig. Thus, a covering layer is formed, and thus the seating surface is such that the base material is exposed to the surface when the coating layer is not formed, and the polishing surface is constituted by the base material.
- the seat surface has a surface roughness R before and after the formation of the coating layer.
- the cutting edge-exchangeable cutting tips of Nos. 40 to 42 were subjected to the following polishing process instead of the above polishing process.
- the No. 40 blade-exchangeable cutting tip after the covering layer is formed, the seating surface is polished with an elastic grindstone to remove the covering layer and the seating surface is made the polishing surface.
- at least the TiN layer (usage state display layer) involved in cutting is removed by blasting, so that the outermost layer of the part is made an aluminum oxide layer (outermost layer of the base layer).
- the chip removes the coating layer by polishing the bearing surface with a diamond brush, and after making the seating surface a polished surface, at least the TiN layer (parts involved in cutting) ( The usage state display layer) is removed by blasting, so that the outermost layer at that portion is made an acid aluminum layer (outermost layer of the base layer).
- the coating layer 42 has a coating layer, and after removing the coating layer by polishing the seating surface with a puff cloth and making the seating surface a polishing surface, at least By removing the TiN layer (usage condition display layer) at the part involved in cutting by blasting, the outermost layer at that part is made an acid aluminum layer (outermost layer of the base layer).
- the cutting edge-exchangeable cutting tips of Nos. 43 to 59 in Table 4 are for comparison, and a polishing process in which the seating surface is polished in advance instead of the sintered base instead of the base material.
- the rest has the same configuration as each of the corresponding cutting edge-exchangeable cutting tips of Nos. 1-17.
- a cutter (model number WGC4160R (manufactured by Sumitomo Electric Hardmetal Co., Ltd.)) capable of attaching seven cutting edge exchangeable cutting tips was used as a cutting tool. Numbers No. 1 to No. 7 were determined in advance with respect to the tip mounting position in the cutter, and each of the blade tip replaceable cutting tips shown in Tables 2 to 4 was attached to the cutter. Based on the position of the cutting edge (blade height) of the cutting edge replacement type cutting tip attached to No. 1, the position of the cutting edge of the cutting edge replacement type cutting tip attached to Nos.
- the difference in height from the position of the cutting edge of the attached cutting edge replaceable cutting tip was determined, and the difference between the largest differences was expressed as an absolute value, and the value was taken as the blade runout.
- the blade vibration was 0.005 mm or less. It was hot. Therefore, it is considered that there is virtually no dimensional difference between the reference tips. Therefore, the inherent dimensional error between the mounting positions No. 1 to No. 7 of the cutter itself used in this test is 0.005 mm or less. It was confirmed.
- Cutting tool Cutter (model number WGC4160R (manufactured by Sumitomo Electric Node Metal Co., Ltd.)) Work material: S35C
- the state was also observed and evaluated according to the following criteria. The evaluation shows that the higher the number, the better the state (closer to the mirror surface). This test was performed by attaching only one replaceable cutting tip to each cutter.
- Cutting tool Cutter (Model No. WGC4160R (manufactured by Sumitomo Electric Metal Co., Ltd.)) Work material: SCM435
- the welding situation was also observed and evaluated according to the following criteria.
- the evaluation shows that the larger the number, the better the wear resistance. This test was performed by attaching only one blade-tip-exchangeable cutting tip to the cutter.
- Cutting tool Cutter (Model No. WGC4160R (manufactured by Sumitomo Electric Metal Co., Ltd.))
- Work material SCM440 (Round bar with 4 grooves)
- Dry Z wet wet When cutting under the above conditions, attach only one blade-tip-exchangeable cutting tip to the cutter, measure the number of impacts until the tip is lost, and repeat this measurement six times to determine the average number of impacts. Asked.
- the replaceable cutting tip showed better results in the surface roughness test, the wear resistance test, and the intermittent cutting test than the cutting edge replaceable cutting tip of the comparative example. Therefore, it is important that the base material is exposed on the surface of the cutting edge replaceable cutting tip without forming a coating layer on the seating surface (and making the seating surface a polished surface). It was clear that improving the blade runout accuracy gave good results in various types of cutting.
- the cutting edge replaceable cutting tip of the comparative example had a larger cutting sound than the corresponding cutting edge replaceable cutting tip of the present invention.
- the shape of the cutting edge replaceable cutting tip and the cutting tool (cutter) model number used above are respectively the shape of the cutting edge replaceable cutting tip (SDKN42MT (manufactured by Sumitomo Electric Hard Metal Co., Ltd.)) and one cutter (model number).
- the cutting edge replaceable cutting tips No. 1, 2, 4, 5, 6, 11, 12, 13, 14 and 15 have an outermost layer (that is, a TiN layer) as a usage state display layer.
- a TiN layer an outermost layer
- the same test as the above-described test was carried out with respect to the formation state of the use state indicating layer for these blade edge-exchangeable cutting tips as the above-described embodiment shown in FIG. 7 and FIG. The excellent effect was shown, and the use of the edge of the cutting edge was not easily recognized.
- the cutting edge exchange type cutting tips No. 43 to 59 of the comparative example described above are those in which a coating layer is formed on the seating surface of a base material that has been previously polished. Results were also obtained for the substrate having a coating layer formed on the surface of the substrate having the same treatment as in the comparative example. Force Similar to the above comparative example, an excellent effect as in the cutting edge-exchangeable cutting tip of the present invention was not obtained.
- a cutter is used as a cutting tool, and a positive type tip is used as the shape of the cutting edge replacement type cutting tip. An effect can be obtained.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Chemical Vapour Deposition (AREA)
- Physical Vapour Deposition (AREA)
- Drilling Tools (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06728870A EP1862240A4 (en) | 2005-03-25 | 2006-03-10 | TIP FOR REPLACING CUTTER EDGE |
JP2006526456A JPWO2006103899A1 (ja) | 2005-03-25 | 2006-03-10 | 刃先交換型切削チップ |
US11/813,415 US20090274525A1 (en) | 2005-03-25 | 2006-03-10 | Indexable insert |
IL184296A IL184296A0 (en) | 2005-03-25 | 2007-06-28 | Indexable insert |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005-088513 | 2005-03-25 | ||
JP2005088513 | 2005-03-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006103899A1 true WO2006103899A1 (ja) | 2006-10-05 |
Family
ID=37053165
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/304702 WO2006103899A1 (ja) | 2005-03-25 | 2006-03-10 | 刃先交換型切削チップ |
Country Status (5)
Country | Link |
---|---|
US (1) | US20090274525A1 (ja) |
EP (1) | EP1862240A4 (ja) |
JP (1) | JPWO2006103899A1 (ja) |
IL (1) | IL184296A0 (ja) |
WO (1) | WO2006103899A1 (ja) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008105149A (ja) * | 2006-10-26 | 2008-05-08 | Sumitomo Electric Hardmetal Corp | 刃先交換型切削チップ |
JP2008105148A (ja) * | 2006-10-26 | 2008-05-08 | Sumitomo Electric Hardmetal Corp | 刃先交換型切削チップ |
WO2008138789A2 (en) * | 2007-05-16 | 2008-11-20 | Oerlikon Trading Ag, Trübbach | Cutting tool |
EP2060347A1 (en) * | 2007-10-05 | 2009-05-20 | Sandvik Intellectual Property AB | Inserts for parting or grooving and method of making |
JP2009255253A (ja) * | 2008-04-18 | 2009-11-05 | Sumitomo Electric Hardmetal Corp | 表面被覆切削工具 |
JP2009285807A (ja) * | 2008-05-30 | 2009-12-10 | Sumitomo Electric Hardmetal Corp | 表面被覆切削工具 |
JP2010036278A (ja) * | 2008-08-01 | 2010-02-18 | Sumitomo Electric Hardmetal Corp | 表面被覆切削工具 |
JP2010036276A (ja) * | 2008-08-01 | 2010-02-18 | Sumitomo Electric Hardmetal Corp | 表面被覆切削工具 |
JP2010115738A (ja) * | 2008-11-12 | 2010-05-27 | Sumitomo Electric Hardmetal Corp | 表面被覆切削工具 |
JP2010115737A (ja) * | 2008-11-12 | 2010-05-27 | Sumitomo Electric Hardmetal Corp | 表面被覆切削工具 |
JPWO2020250626A1 (ja) * | 2019-06-11 | 2021-09-13 | 住友電工ハードメタル株式会社 | 切削工具 |
JPWO2020250625A1 (ja) * | 2019-06-11 | 2021-09-13 | 住友電工ハードメタル株式会社 | 切削工具 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2009095907A (ja) * | 2007-10-15 | 2009-05-07 | Sumitomo Electric Hardmetal Corp | 刃先交換型切削チップ |
CN102498230B (zh) * | 2009-07-14 | 2016-09-07 | Msm克里斯塔尔公司 | 可转位刀片的制造方法 |
DE202010009721U1 (de) * | 2010-07-01 | 2010-10-14 | Clarkson Gmbh | Schneidplatte für ein spanabhebendes Werkzeug |
KR101537718B1 (ko) * | 2014-04-23 | 2015-07-20 | 한국야금 주식회사 | 부분적으로 제거된 피막이 형성된 절삭공구 |
US11376675B2 (en) * | 2014-04-23 | 2022-07-05 | Korloy Inc. | Cutting tool having partially-removed film formed thereon |
DE102016111805A1 (de) * | 2016-06-28 | 2017-12-28 | Komet Group Gmbh | Spanabhebendes Maschinenwerkzeug, insbesondere Maschinenreibwerkzeug |
CN111065480B (zh) * | 2017-08-03 | 2021-11-12 | 维斯塔斯风力系统有限公司 | 用于制造风力涡轮机叶片的铣头及其形成方法 |
WO2020067138A1 (ja) * | 2018-09-28 | 2020-04-02 | 三菱マテリアル株式会社 | 硬質被覆層がすぐれた耐チッピング性を発揮する表面被覆TiN基サーメット製切削工具 |
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Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008105148A (ja) * | 2006-10-26 | 2008-05-08 | Sumitomo Electric Hardmetal Corp | 刃先交換型切削チップ |
JP2008105149A (ja) * | 2006-10-26 | 2008-05-08 | Sumitomo Electric Hardmetal Corp | 刃先交換型切削チップ |
WO2008138789A3 (en) * | 2007-05-16 | 2009-12-17 | Oerlikon Trading Ag, Trübbach | Coated cutting tool |
WO2008138789A2 (en) * | 2007-05-16 | 2008-11-20 | Oerlikon Trading Ag, Trübbach | Cutting tool |
EP2060347A1 (en) * | 2007-10-05 | 2009-05-20 | Sandvik Intellectual Property AB | Inserts for parting or grooving and method of making |
JP2009255253A (ja) * | 2008-04-18 | 2009-11-05 | Sumitomo Electric Hardmetal Corp | 表面被覆切削工具 |
JP2009285807A (ja) * | 2008-05-30 | 2009-12-10 | Sumitomo Electric Hardmetal Corp | 表面被覆切削工具 |
JP2010036278A (ja) * | 2008-08-01 | 2010-02-18 | Sumitomo Electric Hardmetal Corp | 表面被覆切削工具 |
JP2010036276A (ja) * | 2008-08-01 | 2010-02-18 | Sumitomo Electric Hardmetal Corp | 表面被覆切削工具 |
JP2010115738A (ja) * | 2008-11-12 | 2010-05-27 | Sumitomo Electric Hardmetal Corp | 表面被覆切削工具 |
JP2010115737A (ja) * | 2008-11-12 | 2010-05-27 | Sumitomo Electric Hardmetal Corp | 表面被覆切削工具 |
JPWO2020250626A1 (ja) * | 2019-06-11 | 2021-09-13 | 住友電工ハードメタル株式会社 | 切削工具 |
JPWO2020250625A1 (ja) * | 2019-06-11 | 2021-09-13 | 住友電工ハードメタル株式会社 | 切削工具 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2006103899A1 (ja) | 2008-09-04 |
US20090274525A1 (en) | 2009-11-05 |
EP1862240A4 (en) | 2010-08-04 |
IL184296A0 (en) | 2007-10-31 |
EP1862240A1 (en) | 2007-12-05 |
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