WO2006059551A1 - 刃先交換型切削チップおよびその製造方法 - Google Patents
刃先交換型切削チップおよびその製造方法 Download PDFInfo
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- WO2006059551A1 WO2006059551A1 PCT/JP2005/021704 JP2005021704W WO2006059551A1 WO 2006059551 A1 WO2006059551 A1 WO 2006059551A1 JP 2005021704 W JP2005021704 W JP 2005021704W WO 2006059551 A1 WO2006059551 A1 WO 2006059551A1
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- cutting
- cutting edge
- layer
- tip
- edge
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- 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
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- 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
-
- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/04—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material
- C23C28/042—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material including a refractory ceramic layer, e.g. refractory metal oxides, ZrO2, rare earth oxides
-
- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/04—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material
- C23C28/044—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material coatings specially adapted for cutting tools or wear applications
-
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2200/00—Details of cutting inserts
- B23B2200/08—Rake or top surfaces
- B23B2200/086—Rake or top surfaces with one or more grooves
- B23B2200/087—Rake or top surfaces with one or more grooves for chip breaking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2200/00—Details of cutting inserts
- B23B2200/32—Chip breaking or chip evacuation
- B23B2200/323—Chip breaking or chip evacuation by chip breaking depressions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2224/00—Materials of tools or workpieces composed of a compound including a metal
- B23B2224/04—Aluminium oxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2224/00—Materials of tools or workpieces composed of a compound including a metal
- B23B2224/32—Titanium carbide nitride (TiCN)
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2224/00—Materials of tools or workpieces composed of a compound including a metal
- B23B2224/36—Titanium nitride
-
- 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
- B23B—TURNING; BORING
- B23B2260/00—Details of constructional elements
- B23B2260/144—Wear indicators
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- 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
- Y10T407/23—Cutters, for shaping including tool having plural alternatively usable cutting edges
- Y10T407/235—Cutters, for shaping including tool having plural alternatively usable cutting edges with integral chip breaker, guide or deflector
-
- 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
- Y10T407/24—Cutters, for shaping with chip breaker, guide or deflector
-
- 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
-
- 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
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
-
- 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
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
Definitions
- Cutting edge replaceable cutting tip and manufacturing method thereof
- the present invention relates to a blade-tip-exchangeable cutting tip used for a cutting tool for cutting and a method for manufacturing the same. More specifically, the present invention relates to a cutting edge-replaceable cutting tip having a chip breaker formed on a rake face for the purpose of breaking a chip material separated by cutting into a suitable small piece and a manufacturing method thereof. .
- FIG. 1 such a blade-tip-exchangeable cutting tip 1 faces the rake face 2 on the side of lifting the chip 6 of the work material 5 and the work material itself at the time of cutting.
- the flank 3 exists on the side to be cut, and the flank 3 is connected to the rake face 2 with a cutting edge ridge 4 serving as a central point of action for cutting the work material 5.
- chip breakers 7 are often formed on the rake face 2 (see FIG. 2).
- the chip that separates and flows out from the work force is broken into suitable small pieces, and the work risk due to the long chip extending (entanglement with the tool or work material) Can be prevented.
- chips that have become hot due to cutting are immediately discharged, preventing chip welding to the tool surface and workpiece surface and preventing temperature rise on the tool surface. Become.
- a blade-tip-exchangeable cutting tip In such a blade-tip-exchangeable cutting tip, the blade tip must be replaced when the tool life is reached. In this case, if the tip has only one edge, the tip itself must be replaced. However, a cutting edge-exchangeable cutting tip having a plurality of cutting edge ridge lines changes direction many times on the same seating surface, that is, an unused cutting edge ridge line is placed at the cutting position, so that a different cutting position can be obtained. Can be used in In some cases, the edge of the cutting edge can be reattached to another bearing surface, and the unused cutting edge can be used here.
- the edge of the cutting edge has not yet been used, but the cutting edge replacement type cutting is performed.
- the cutting tip may be replaced or reoriented. This is due to the fact that the used cutting edge ridge line force is not recognized when replacing the cutting edge or changing the direction of the cutting edge ridge line. Therefore, it is necessary to perform this operation after fully confirming whether the edge of the cutting edge is unused or used.
- this blade-tip-exchangeable cutting tip has a wear-resistant base layer called an anti-friction coating formed on the main body, and a use state display layer made of an easily wearable material on the flank. It has a configuration.
- the cutting edge ridge line portion has a function to call attention to whether or not the used force is used, but is used on the flank.
- the status display layer is easily welded to the work material, so that the work status display layer is welded to the surface of the work material, or cutting is performed with the cutting edge where the work material is welded to the work status display layer and becomes uneven. As a result, the appearance and surface smoothness of the work material after cutting were adversely affected.
- Patent Document 1 Japanese Patent Laid-Open No. 2002-144108
- the present invention has been made to solve the above-described problems, and the object of the present invention is to alert the user to visual screening without impairing the appearance and surface smoothness of the work material.
- the object is to provide a cutting edge-exchangeable cutting tip capable of effectively showing its function and a method of manufacturing the same. Means for solving the problem
- the present inventor has eagerly studied the contact state between the cutting edge-exchangeable cutting tip and the work material during cutting, and as shown in Fig. 1, the cutting edge-exchangeable cutting is performed.
- the cutting edge ridge 4 of the insert 1 is in contact with the work material 5 and its rake face 2 is located on the chip 6 side, while the flank 3 faces the work material 5 so that it can be used. If the display layer is formed on the rake face 2 side, it cannot be prevented from welding to the surface of the work material after cutting! /, Kato! /, Obtained knowledge and further research based on this knowledge.
- the present invention has been completed.
- the present invention is a blade-tip-exchangeable cutting tip having a main body, a base layer formed on the main body, and a use state display layer formed on a portion on the base layer.
- a chip breaker is formed, and adjacent to the cutting edge ridge line section, a breaker groove section inclined from the cutting edge ridge line section toward the center of the rake face in a concave shape or the cutting edge ridge line force.
- the base layer has a color different from that of the usage state display layer, and the usage state display layer is on the base layer and has the clearance. Less surface including the edge of the edge excluding the face and the rake face If the surface roughness Ra of the rake face of the rake face or land is Am, and the surface roughness Ra of the flank is B / zm, then B / A ⁇ 1
- the present invention relates to a cutting edge-exchangeable cutting tip.
- the base layer is a portion where the use state display layer is not formed on the base layer, and at least a part of the base layer has a compressive residual stress in at least a part of the portion involved in cutting.
- the compressive residual stress that it is desirable to have is preferably a stress whose absolute value is 0.1 GPa or more.
- the present invention also provides a blade-tip-exchangeable cutting tip having a main body, a base layer formed on the main body, and a use state display layer formed on a portion on the base layer.
- the chip A breaker is formed, and adjacent to the edge of the edge of the cutting edge, a breaker groove that inclines concavely from the edge of the edge of the cutting edge toward the center of the rake face or from the edge of the edge of the edge toward the center of the rake face.
- the use state indicating layer is on the base layer and includes at least part of the surface including the cutting edge ridge line portion excluding the flank and the rake face.
- the base layer has a color different from that of the usage state display layer, and is a portion where the usage state display layer is not formed on the base layer, and at least one of the parts involved in cutting.
- the compressive residual stress is preferably a stress having an absolute value of 0.1 GPa or more.
- the use state display layer may be formed on at least a part of a portion involved in the cutting of the rake face, and is a layer that is more easily worn than the base layer. Is preferred.
- the cutting edge replacement type cutting tip may have a plurality of available cutting edge ridges, and the main body includes cemented carbide, cermet, high speed steel, ceramics, cubic boron nitride. It is preferably composed of a sintered body, a diamond sintered body, a silicon nitride sintered body, or a mixture of aluminum oxide and titanium carbide.
- the base layer may be composed of an Al 2 O layer or a layer containing Al 2 O as an outermost layer.
- the above-mentioned usage status display layer is preferably 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.), Al, Si, Cu, Pt, Au, Ag, Pd, Fe, Co, and Ni, or at least one metal (element) selected from the group consisting of Ni or an alloy containing the metal. Or at least one element selected from group IVa elements, group Va elements, group Via elements, A1 and Si in the periodic table, and group forces consisting of carbon, nitrogen, oxygen and boron forces It is preferably composed of a layer formed of a compound composed of at least one element.
- the above-mentioned cutting edge replacement type cutting tip is a drill, end mill, milling or turning cutting edge replacement type tip, metal saw, gear cutting tool, reamer, tap, or clanta shaft pin milling force tip. It is preferable that it is either.
- the present invention also includes a main body having a chip breaker, a base layer formed on the main body, A method of manufacturing a blade-tip-exchangeable cutting tip having a use state display layer formed on a portion on the base layer, the step of forming the base layer on the main body, and a color different from the base layer on the base layer Forming a usage status display layer; and removing the usage status display layer formed on a predetermined area including at least a part of the flank of the main body.
- the present invention relates to a method for manufacturing a cutting edge-exchangeable cutting tip
- Such a cutting edge-exchangeable cutting tip according to the present invention has at least one flank, at least one rake face, and at least one cutting edge ridge, and is formed on the main body.
- a use state display layer having a color different from that of the base layer is provided at the predetermined position on the rake face side.
- the use state display layer has a color contrast that is as large as possible.
- this use state display layer formed at a predetermined position on the surface side should show a clear processing mark after cutting for a short time, such as several seconds to several minutes, at least partially after the cutting edge replacement type cutting tip is formed. So that the substrate with a different color (ie, the base layer) can be seen.
- the use state indicating layer is preferably one that is easily worn away and weakly adheres to the base layer compared to a base layer that has poor wear resistance.
- the use state display layer may be changed in color immediately when the cutting edge exchangeable cutting tip is used. Further, the usage state display layer may be discolored (including the case where the appearance is as if the applied force is also discolored) due to chips or cutting oil adhering thereto. .
- the use state display layer may change color in a different manner in order to display that the edge portion of the cutting edge adjacent to the use state display layer has already been used.
- the use state display layer may be a heat-sensitive layer in which only the vicinity of the edge portion of the blade edge changes color at a temperature exceeding 200 ° C. The discoloration is based on acidity and other changes, and is preferably irreversible. Even when the adjacent cutting edge ridge line is used for a short time, if the rake face area adjacent to the cutting edge ridge line exceeds the predetermined temperature for at least a short time, the usage status display layer changes color, which is continuously It is clearly recognized.
- Discoloration due to the action of heat became high temperature not only at the part that was in direct contact with the work material during use. Since the discoloration occurs even in a wide area of the rake face that comes into contact with the chips, there is an advantage that the used edge edge can be easily identified.
- the cutting edge replacement type cutting tip of the present invention has the prior art because the use state display layer is formed on the rake face side that not only exhibits such a warning function. When the problem of harming the appearance and surface smoothness of the work material after cutting is cleared, it has a remarkable effect.
- the cutting edge replacement type cutting tip with a conventional alerting function has a usage status display layer formed on the flank, so the work material is welded to the usage status display layer, and the appearance of the work material after cutting is shown. Damage the surface roughness. In addition, the cutting edge may be lost due to increased cutting resistance. For this reason, not only the types and applications of the work material are limited, but there are cases where cutting cannot be performed using such a blade-tip-exchangeable cutting tip.
- the present invention is a solution to such a problem, and its industrial applicability is extremely large.
- the surface roughness Ra of the breaker groove or land of the rake face is A / zm
- the surface roughness Ra of the flank is B / zm.
- the cutting edge replacement type cutting tip according to the present invention has a rake face as described above. It is easy to determine which edge of the cutting edge is used even when the chip is stored in the storage case or on the work table around the machine tool. If it can be identified, it has an excellent effect.
- such a use state display layer is formed to have a light color, for example, yellow or yellowish luster (for example, gold), and a base layer serving as a flank surface is formed to a dark color. It is desirable to do.
- a base layer is made of acid aluminum (Al 2 O 3).
- the cutting edge-exchangeable cutting tip of the present invention can be formed by laminating each layer, and the Al 2 O layer serving as the base layer becomes a wear-resistant layer.
- the wear-resistant layer as used in the present invention means cutting.
- Such an abrasion resistant layer may further hold an auxiliary surface layer.
- a coating including an Al 2 O layer as a wear-resistant layer is formed as a base layer on the entire surface of a main body having a tip breaker.
- a nitride layer (eg, TiN) can be formed as the use state display layer as the uppermost layer. This nitride layer should be formed so as to cover the entire surface of the base layer and be removed from the surface other than the predetermined portion of the rake face.
- a nitride layer used as a use state display layer needs to have a flank force removed. This can be done by any method, but can be done, for example, by mechanical removal, more specifically by brushing, barreling, or blasting (sandblasting).
- the brush or blast cache operation simultaneously performs post-processing of the flank, thereby smoothing the covering of the flank. This reduces welding to the work material and contributes to the improvement of the service life of the cutting edge replacement type cutting tip.
- the cutting edge-exchangeable cutting tip of the present invention has the configuration as described above, so that a work material is obtained. It is possible to effectively show a warning function for visual screening without harming the appearance and surface smoothness of the screen.
- FIG. 1 is a schematic view schematically showing a contact state between a cutting edge-exchangeable cutting tip and a work material during cutting.
- FIG. 2 is a schematic perspective view of an embodiment of the cutting edge-exchangeable cutting tip of the present invention before use.
- FIG. 3 is an enlarged sectional view in the vicinity of a breaker groove on a rake face.
- FIG. 4 is an enlarged cross-sectional view in the vicinity of the land portion of the surface.
- FIG. 5 is a schematic perspective view of a cutting edge-exchangeable cutting tip according to the present invention after using one cutting edge ridge line portion.
- FIG. 6 is a schematic perspective view of the cutting edge-exchangeable cutting tip of the present invention after using two cutting edge ridges.
- FIG. 7 is an enlarged cross-sectional view of the vicinity of a cutting edge ridge line portion of the cutting edge replacement type cutting tip of the present invention.
- FIG. 8 is an enlarged cross-sectional view of the vicinity of a cutting edge ridge line portion of a cutting edge replaceable cutting tip in which a use state display layer is formed in another form.
- FIG. 9 is an enlarged cross-sectional view of the vicinity of the edge of the cutting edge of a cutting edge-exchangeable cutting tip in which a usage state display layer is formed in another form.
- FIG. 10 is an enlarged cross-sectional view of the vicinity of the edge of the cutting edge of the cutting edge-exchangeable cutting tip in which the use state display layer is formed in another form.
- FIG. 11 is a schematic plan view of a cutting edge corner portion of a cutting edge replaceable cutting tip.
- FIG. 12 is a schematic cross-sectional view of a cutting edge corner portion of a cutting edge replaceable cutting tip.
- FIG. 13 is a schematic side view showing the vicinity of the cutting edge corner on the flank side of the cutting edge replaceable cutting tip.
- the blade-tip-exchangeable cutting tip of the present invention has a main body, a base layer formed on the main body, and a use state display layer formed on a portion on the base layer.
- FIG. 2 shows a blade-tip-exchangeable cutting tip 1 whose upper surface is formed in a square shape.
- the force with which the cutting edge-exchangeable cutting tip 1 has the main body 8 as described above is preferably made of a cemented carbide, for example.
- it can be sintered tungsten carbide or other cemented carbide material.
- the main body of such a blade-tip-exchange-type cutting tip is used as a material constituting the main body.
- base materials can be used without particular limitation, such as cemented carbide (for example, WC-based cemented carbide, WC, Co, or further Ti, Ta, Nb, etc. Including carbonitride-added), cermet (mainly composed of TiC, TiN, TiCN, etc.), high-speed steel, ceramics (titanium carbide, silicon carbide, silicon nitride, aluminum nitride, aluminum oxide, aluminum oxide) Etc.), a cubic boron nitride sintered body, a diamond sintered body, a silicon nitride sintered body, or a mixture of aluminum oxide and titanium carbide. Further, these main bodies (base materials) may have a modified surface. For example, in the case of cemented carbide, a de-j8 layer is formed on the surface, and in the case of cermet, a surface hardened layer may be formed. The effect of the invention is shown.
- cemented carbide for example, WC-based cemented carbide, WC, Co, or
- the shape of the main body 8 may be a polyhedron, for example.
- the polyhedron can include, for example, a shape having at least a bottom surface, a plurality of side surfaces, and a top surface as shown in FIG. 2.
- the polyhedron is not limited to such a shape, and includes any shape polyhedron.
- at least one of the above surfaces of the main body 8 is a rake surface which will be described later. At least one of the surfaces becomes the flank, and this flank is connected to the rake face across the edge of the cutting edge (shown as a ridge where the flank and rake face intersect in Fig. 2). .
- the through hole 9 used as a fixing hole for attaching the cutting edge replacement type cutting tip 1 to the tool is formed so as to penetrate the top surface and the bottom surface. May be. If necessary, another fixing means can be provided in addition to or instead of the fixing hole.
- Such a blade-tip-exchangeable cutting tip of the present invention is a drill, end mill, milling force blade or turning blade-tip replaceable tip, metal saw, gear cutting tool, reamer, tap, and crankshaft. It is particularly useful as a pin milling basket tip.
- the present invention is also effective for negative-type or positive-type misaligned cutting edge-exchangeable cutting tips.
- the main body has at least one edge ridge line part, at least one rake face, and at least one flank face, and the flank face is connected to the rake face sandwiching the edge ridge line part.
- a blade-tip-exchangeable cutting tip 1 preferably has a plurality of usable blade edge ridges 4, 41, 42, 43 as shown in FIG. This is because it is possible to reduce the trouble of exchanging the blade-tip-exchangeable cutting tip itself after using one blade edge portion.
- the expression of the edge of the cutting edge, the rake face and the flank used in the present application refers to each layer such as the surface part of the main body, the base layer, the usage status display layer, etc., not just the part or face located on the outermost surface part of the cutting edge replaceable cutting tip. This is a concept that includes a considerable part located on the surface or inside of the slab.
- the cutting edge ridge line portion constitutes a central action point for cutting the work material.
- the edge edge 4 of the blade edge is formed in a straight line. This is not limited to this, and includes, for example, a circumferential shape, a wavy shape, a curved shape, or a refractive shape.
- the edge edge line part used in the present application is expressed by a cutting edge process for the sharp edge that is not just the part corresponding to the edge (sharp edge) where the surface and the flank intersect.
- R) (a so-called blade edge processing unit) processed to have R) or chamfering processing And a portion processed by combining these blade edge processing and chamfering processing.
- the flank 3 is a force shown as a flat surface in FIG. 2. If necessary, the flank 3 is chamfered (divided into a plurality of surface areas) or otherwise has a different shape or curved surface from the flat surface. Or a shape with a chip breaker. On the rake face 2, the following chip breaker is formed.
- a chip breaker 7 is formed on the rake face as shown in FIG.
- the shape of such a chip breaker is not limited to the embodiment as shown in FIG. 2, but can be formed in any irregular shape so as to improve the chip dischargeability.
- the chip breaker forming means is not particularly limited, and any conventionally known forming means can be used.
- the most common method is a force by a so-called powder metallurgy method in which a raw material powder is sintered after press molding using a die that has been processed into a desired chip breaker shape in advance. It can be formed by subjecting the rake face of the main body to laser machining, electric discharge machining, ultrasonic machining, abrasive polishing, or a combination of these machining methods as appropriate.
- the rake face as described above is concavely formed adjacent to the cutting edge ridge line section 4 from the cutting edge ridge line section 4 to the center of the rake face 2 as shown in FIGS. And a land portion 11 formed horizontally from the cutting edge ridge line portion 4 to the center portion of the rake face 2, and the breaker groove portion 10 and the land portion 11. Is part of chip breaker 7.
- the chip breaker 7 formed on the rake face 2 has a shape of a deviation of the breaker groove portion 10 or the land portion 11 at a location adjacent to the cutting edge ridge line portion 4. By having such a shape of! /, It is possible to improve chip discharge.
- the base layer 12 formed on the main body 8 has a color different from the use state display layer 13 described later. It presents.
- Figure 7 shows the structure of the coating 14 applied to the cutting edge-exchangeable cutting tip 1.
- the coating 14 includes a base layer 12 that extends to the rake face 2 and the flank face 3.
- the main body 8 has the base layer 12 formed on the surface thereof, and such a base layer 12 can be formed at least on the flank face, and further formed on both the rake face and the flank face. You can also. That is, the base layer 12 is particularly preferably formed on the entire surface of the main body 8.
- such a base layer 12 is exposed on the surface in a portion where the use state display layer 13 is not formed. That is, the use state display layer 13 is formed, and the base layer 12 is the surface of the part.
- such a base layer 12 is a part where the use state display layer 13 is not formed (that is, a part to be a surface), and at least a part of a part related to cutting, It is preferable that at least one layer constituting the base layer 12 has a compressive residual stress.
- the part involved in cutting differs depending on the shape of the cutting edge-exchangeable cutting chip, the type and size of the work material, the mode of cutting work, etc., but the work material usually comes into contact. It means that the area extends from the edge of the edge of the blade edge (or closest) to the surface side and flank side with a width of 3 mm each. If the compressive residual stress is applied to at least a part of the part involved in such cutting, it may be applied to only one of the deviations on the surface side or the flank side. , And may be given to both of them.
- compressive residual stress is applied to the entire region of such a part because it is defined as at least a part of the part involved in cutting as described above. This is to the extent that compressive residual stress is applied to a part of such a part, and also includes such aspects.
- the compressive residual stress is a kind of internal stress (intrinsic strain) existing in the coating (coating layer), and is a numerical value of “one” (minus) (unit: “GPa” in the present invention).
- the stress expressed by For this reason, 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 is the absolute value of the numerical value. Power shows that it becomes small.
- the tensile residual stress is a kind of internal stress (inherent strain) existing in the coating layer, and it is a stress represented by a numerical value of “+” (plus).
- residual stress includes both compressive residual stress and tensile residual stress.
- the compressive residual stress of the base layer 12 is preferably a stress having an absolute value of 0.1 GPa or more, more preferably 0.2 GPa or more, and even more preferably 0.5 GPa or more. It is. If the absolute value is less than 0.1 GPa, sufficient toughness may not be obtained. On the other hand, the larger the absolute value, the better the viewpoint of imparting toughness, but the absolute value is 8 GPa. Exceeding this is undesirable because the coating layer itself may peel off.
- such compressive residual stress is provided by at least one layer constituting the base layer in the region defined above!
- the layer is formed by a layer constituting at least the outermost layer of the base layer. They are considered to contribute most to the improvement of fracture resistance.
- the residual stress may be measured using any method, can be measured by sin 2 phi method for example using an X Sen ⁇ force measuring device.
- Such residual stress is 10 arbitrary points included in the region where the compressive residual stress is applied in the base layer (each of these points is 0% to represent the stress of the region of the layer. the stress is preferred) selecting the distance of more than 1mm away and as measured by the sin 2 phi method, it is possible to ⁇ Koyori willow "constant can calculate the average.
- 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 54-66 of Yonkendo Inc.) can be used.
- 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 common, but for example, the method described on pages 264 to 271 of “Mechanical characterization techniques for thin films” (Sipec, 1992) is used. Can be adopted.
- the residual stress can also be measured using synchrotron radiation. In this case, there is an advantage that the residual stress distribution can be obtained in the thickness direction of the base layer (coating layer).
- such a base layer 12 can be formed by a known chemical vapor deposition method (CVD method), physical vapor deposition method (PVD method), sputtering method or the like, and the formation method is not limited in any way. It is not a thing.
- CVD method chemical vapor deposition method
- PVD method physical vapor deposition method
- sputtering method or the like
- the formation method is not limited in any way. It is not a thing.
- the base layer is preferably formed by a PVD method that can be formed without lowering the bending strength.
- the control of the thickness of the base layer may be adjusted by the film formation time.
- the base layer is formed using a known CVD method
- MT-CVD medium temperature CVD
- TiCN titanium carbonitride
- the conventional CVD method performs film formation at about 1020 to 1030 ° C, whereas the MT-CVD method can be performed at a relatively low temperature of about 850 to 950 ° C. Damage to the main body can be reduced. Therefore, the layer formed by the MT-CVD method is more preferably provided close to the main body.
- a nitrile gas particularly acetonitrile (CH 3 CN)
- the method for applying the compressive residual stress to the base layer 12 is not particularly limited.
- the base layer 12 is formed by the CVD method
- the base layer 12 is formed after the formation.
- the compressive residual stress can be applied by performing a blasting process on the region to which the compressive residual stress is applied.
- the region to be processed by this blasting method is the above-described region (where the use state display layer 13 is formed, that is, the portion (that is, the surface portion), and at least a part of the portion involved in cutting ) Can be processed over a wider area.
- the base layer 12 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.
- a method of applying compressive residual stress to the base layer 12 includes a method of forming the base layer 12 itself by the PVD method, but considering the adhesion between the base layer 12 and the main body 8, It is particularly preferable to form itself by a CVD method and apply compressive residual stress by a blasting process.
- such treatment by the blast method can be performed after the base layer 12 is formed.
- a use state display layer 13 described later is once formed on the entire surface of the base layer 12, and then this use state display layer is formed.
- This operation state display layer 13 can also be removed from the area other than the area where the 13 remains. Adopting such a treatment method is preferable because the production efficiency of the blade-tip-exchangeable cutting tip is improved. In this case, it is preferable to mask the portion where the use state display layer 13 remains with a jig or the like.
- the blasting method is a kind of surface treatment method for removing film, wrinkles, dirt, etc. on the surface of the object to be treated by the following methods (1) to (3). It is used in many industrial fields.
- a liquid (water) containing particles of various abrasives is sprayed on the surface of the object to be processed under high pressure.
- sand blasting refers to a method in which abrasive particles such as silica sand (powder) are sprayed onto the surface of the object to be treated with compressed air or the like
- shot blasting refers to a method using steel shot (usually spherical). Indicates.
- wet blasting refers to a method in which a liquid (water) containing abrasive particles is sprayed onto the surface of an object to be processed at a high pressure.
- the method for applying compressive residual stress to the base layer 12 can employ the blasting method as described above, and also employs a brush method, a shot peening method, a barrel method, an ion implantation method, and the like. I'll do it for you.
- such a base layer 12 may be formed by laminating a plurality of layers, and preferably exhibits an action as an abrasion resistant layer.
- the base layer 12 at least one element selected from group IVa elements, group Va elements, group Via elements, A1 and Si in the periodic table of elements, and group force consisting of carbon, nitrogen, oxygen and boron forces is selected. It can be formed from a compound composed of at least one element that exhibits excellent performance.
- the base layer 12 may include a force that is an Al 2 O layer as such a compound.
- a TiN layer is formed on the main body 8, a TiCN layer is formed thereon, and an Al 2 O 3 layer is formed thereon.
- This three-layer system forms the base layer 12 as a whole, and acts as a wear-resistant layer.
- the outermost layer is made of Al 2 O 3.
- the layer is excellent as a wear-resistant layer and has a dark color (exactly, it is not a color that itself is black, but is easily affected by the underlying color. This is because a particularly remarkable contrast can be formed with the use state display layer formed thereon.
- the use state display layer 13 is formed on the Al 2 O layer or the Al 2 O-containing layer.
- the compressive residual stress is preferably a stress having an absolute value of 0.1 GPa or more, more preferably 0.2 GPa or more, and still more preferably 0. Stress of 5 GPa or more.
- the larger the absolute value the better from the viewpoint of imparting toughness.
- the layer itself may peel off, which is not preferable.
- the crystal structure of 2 3 2 3 2 is not particularly limited, and a—Al 2 O, ⁇ —Al 2, y—Al 2 O or
- 1 O-containing layer means that it contains at least Al 2 O as part of the layer (50% by mass
- such a base layer 12 has a region extending with a distance of less than 0.4 mm from the cutting edge ridge 4 to the clearance surface 3 side, and less than 2 mm from the cutting edge ridge 4 to the rake face 2 side. It is preferable that the surface of the base layer 12 is exposed to the surface of the region that extends with a distance, and the exposed portion is formed of an Al 2 O layer or a layer containing Al 2 O 3. With this configuration
- base layer 12 As base layer 12,
- a TiN layer with a thickness of several zm is formed, a TiCN layer with a thickness of several zm is formed on it, and an AlO layer with a thickness of several meters (or a layer containing AlO) is further formed thereon.
- a TiN layer with a thickness of several zm is formed, a TiCN layer with a thickness of several zm is formed on it, and an AlO layer with a thickness of several meters (or a layer containing AlO) is further formed thereon.
- a layer composed of a compound composed of at least one element of nitrogen, oxygen, or boron is formed.
- Particularly good adhesion can be obtained between the layer containing 2 3 2 3 and the lower layer, and further excellent wear resistance can be obtained.
- More specific examples of such compounds include TiN, TiBN, TiBNO, TiCBN, TiCNO and the like.
- other suitable modifications Examples of the compound may include compounds such as AION and A1CNO.
- the wear-resistant layer as the base layer 12 in this way, the tool life of the cutting edge replacement type cutting chip is dramatically extended. It has the advantage of being able to withstand harsh usage environments such as increasing the cutting speed, and forming this on at least the flank, or both the rake face and flank face. Thus, this advantage can be enjoyed more effectively.
- the thickness of the base layer 12 is preferably 0.05 m or more and 20 m or less. If the thickness is less than 0.05 / z m, no improvement in wear resistance is observed, and conversely, if it exceeds 20 m, no significant improvement in wear resistance is observed, which is not economically advantageous. However, as long as economic efficiency is ignored, the effect of the present invention can be achieved even if the thickness is 20 m or more.
- As a method for measuring such a thickness for example, it is possible to measure by cutting a blade-replaceable cutting tip and observing the cross section using an SEM (scanning electron microscope).
- the cutting edge replacement type cutting tip of the present invention uses a color different from the color of the base layer on at least a part of the surface on the base layer and excluding the flank and including the cutting edge ridge line portion and the rake face.
- a state display layer is formed.
- Such a use state display layer can be formed by a known chemical vapor deposition method, physical vapor deposition method, vacuum vapor deposition method, plating method, or notching method, and the formation method is not limited in any way. It is not a thing.
- the mode of formation of the use state display layer of the present invention is examined centering on the vicinity of the edge portion of the blade edge, various modes are included.
- a mode includes a mode in which the use state display layer 13 is formed on the rake face 2 and immediately before the cutting edge ridge part 4 as shown in FIG.
- the usage state display layer 13 may be formed so as to extend substantially to the cutting edge ridge 4 and further, the cutting edge ridge 4 is completely covered as shown in FIG. It also includes cases where it is formed so as to wrap around just before the flank.
- the usage status display layer 13 has a slight distance to the edge 4 of the cutting edge (depending on the size of the cutting tip, the usage status display function is greatly enhanced. This includes the case where it is formed with a distance that will not be damaged, for example, a cutting tip with an inscribed circle of 12.7 mm, a distance of about 3. Omm or less!
- the use state display layer of the present invention is particularly preferably formed on at least a part of the portion related to the cutting of the rake face.
- the part involved in cutting is specifically the vicinity of the edge of the cutting edge not just the edge of the cutting edge (the area extending from the edge of the cutting edge to the center of the rake face with a distance of about Omm to 3 mm) An area that includes Thereby, it can be identified reliably whether the said blade edge ridgeline part is used force.
- the part where the usage state display layer is formed is defined as "at least a part of the surface including the cutting edge ridge line part and the rake face", because only a part of the cutting edge ridge line part is used for cutting.
- the alerting function can be achieved only by placing the usage state display layer only in the part close to the part involved in the cutting, and the above-mentioned edge of the edge and the above-mentioned surface of the surface are not necessarily covered. This is because it is not necessary to form a use state display layer that occupies a large area so as to cover it.
- the usage state display layer includes a case where the use state display layer is formed only on a part of the edge of the cutting edge ridge line portion and the rake face.
- the use condition display layer is formed in the location where the chip breaker is formed on the rake face, it is formed on the chip breaker (see FIGS. 7 to 10. FIG. 7).
- the concavo-convex shape of rake face 2 of ⁇ 10 indicates a chip breaker).
- such a usage state display layer 13 is preferably a layer that is more easily worn than the base layer 12. This is because it is possible to easily indicate that the portion is being used by removing the base layer 12 immediately after being deleted during the cutting process. In addition, by removing the usage state display layer formed on the surface other than the rake face, it is possible to facilitate the manufacture of the cutting edge replaceable cutting tip itself.
- the use state display layer 13 exhibits a color different from that of the base layer 12.
- the rake face is constrained to generate a large color contrast with the flank face as a result. This is because the base layer 12 as a wear-resistant layer is usually formed on the surface of the flank as described above.
- the use state display layer 13 is formed on the rake face 2 in this way, so that cutting is performed.
- This usage status display layer 13 is welded to the work material during machining, and it can exhibit a warning function without such disadvantages because it does not harm the appearance and surface smoothness of the work material. it can.
- Such a use state display layer can be formed on a part of the rake face, and can also be formed on the entire rake face. And as above-mentioned, it is preferable that the use condition display layer of this invention is formed in at least one part of the site
- Such a usage state display layer 13 can be formed as a single layer, and can also be formed by laminating a plurality of layers.
- such a use state display layer 13 includes elements IVa group element, Va group element, Via group element, Al, Si, Cu, Pt, Au, Ag, Pd, Fe, Co in the periodic table of elements.
- N is a force formed by at least one metal (element) selected from the group or an alloy containing the metal, or elements IVa group, Va group, Via group, A1 and
- the outermost layer is configured as described above.
- the outermost layer has an IVa group element, a Va group element, a Via group element, Al, Si, Cu, Pt, Au, Ag, Pd, Fe in the periodic table of elements. And at least one metal selected from the group force consisting of Co and N, or at least one element selected from group IVa elements, Va group elements, Via group elements, A1 and S in the periodic table. It is particularly preferable to be composed of a layer formed of a compound composed of at least one element selected from a group force that also has carbon, nitrogen, oxygen and boron forces. This is because the compound exhibits particularly vivid colors such as yellow, pink, brass, and gold, is excellent in design, and can form a clear contrast with the base layer. When the use state display layer is formed of only one layer, that layer is the outermost layer.
- such a use state display layer can be formed of an element or a compound such as ZrN, TiCN, TiSiCN, TiCNO, VN, or Cr, in addition to TiN as described above.
- the use state display layer 13 does not have a strong function of improving wear resistance (that is, it is preferable that the wear-resistant layer is an easily wearable layer, and the wear resistance is inferior to that of the base layer). And it has a relatively thin thickness.
- the preferred thickness is 0.05 m or more and 2 m or less, more preferably 0.1 ⁇ m or more and 0.5 ⁇ m or less.
- the use state display layer 13 may have compressive residual stress. Thereby, it can contribute to the toughness improvement of a blade-tip-exchange-type cutting tip.
- the compressive residual stress is preferably a stress having an absolute value of 0.1 GPa or more, more preferably 0.2 GPa or more, and even more preferably 0.5 GPa or more. If the absolute value is less than 0.1 lGPa, sufficient toughness may not be obtained. On the other hand, the larger the absolute value, the better from the viewpoint of imparting toughness, but the absolute value is 8 GPa. Exceeding this is not preferable because the use state display layer itself may be peeled off.
- the flank of the present invention is particularly preferably smooth to prevent welding of the work material.
- Such surface smoothness can be obtained by performing mechanical treatment on the flank surface, for example, brush operation or blasting (sand blasting).
- Such mechanical treatment can be performed as an independent treatment operation on the surface of the flank, which is a force normally used when the use state display layer formed on the base layer is removed. That is, it can be performed as an independent processing operation on the base layer formed on the flank.
- the smoothness can be obtained not only by such mechanical processing but also by chemical processing or physical processing.
- the surface roughness Ra of the breaker groove or land of the rake face is A / zm and the surface roughness Ra of the flank is B / zm
- BZA ⁇ It is recognized that particularly good work-material weldability can be obtained when the relationship 1 is established. More preferably, B / A ⁇ 0.8, and even more preferably B / A ⁇ 0.7.
- the breaker groove portion or land portion of the rake face which is the area to be specified for the surface roughness, may have a use state display layer formed on the surface thereof, or the base layer may be exposed without being formed. It may be in a state.
- the flank of the surface roughness target area is naturally a base layer.
- the surface roughness Ra is a kind of numerical value representing the surface roughness, and is called a centerline average value (JIS B0601).
- the measuring method is not particularly limited, and any known measuring method can be adopted.
- it may be a contact method (for example, a stylus method), a non-contact method (for example, a laser microscope method), or a method of directly observing a cross-section of a cutting edge exchangeable cutting tip with a microscope. May be.
- each measurement site is a breaker groove or land, and for the flank where it is preferable to measure the center of each part, from the edge of the blade edge toward the center of the flank, It is preferable to measure a site separated by about 0 to 3 mm.
- the method for manufacturing a cutting edge-exchangeable cutting tip according to the present invention comprises a main body having a chip breaker, a base layer formed on the main body, and a use state display layer formed on a portion on the base layer.
- a method for manufacturing a chip comprising: forming a base layer on the main body; forming a use state display layer of a color different from the base layer on the base layer; and at least one of flank surfaces of the main body. Removing the use state display layer formed thereon for a predetermined area including the portion. As a result, it is possible to manufacture a cutting edge-exchangeable cutting tip with extremely high production efficiency.
- the use state display layer 13 is once formed on the base layer 12 when the cutting edge replaceable cutting tip 1 is manufactured, and then, at least a part of the surface including the cutting edge ridge line portion and the rake face. It is removed from parts other than (that is, the part where the use state display layer is formed).
- the portion where the use state display layer is removed is also the portion excluding at least a part of the part involved in cutting, but the effect of the present invention is exhibited, but in order to more easily identify the used cutting edge ridge line portion.
- it is the entire flank.
- any of a chemical method, a physical method, and a mechanical method can be employed.
- physical or mechanical methods such as brushing or other abrasion removal such as sand blasting (blasting) can be employed.
- blasting has the effect of smoothing the exposed base layer 12 as described above.
- the method for manufacturing a blade-tip-exchangeable cutting tip of the present invention includes a step of performing a smoothness process on the flank (including the case where it is performed simultaneously with the step of removing the use state display layer). Can be included. If the surface roughness Ra of the breaker groove or land of the rake face is A / zm and the surface roughness Ra of the flank is B / zm, such a smoothness is established so that the relationship BZA ⁇ 1 is established. It is preferable to perform a sex treatment. This is because it is possible to ensure the appearance and surface smoothness of the work material after cutting.
- any of chemical methods, physical methods, and mechanical methods can be employed.
- physical or mechanical methods such as brushing or other abrasion methods such as sand blasting (blasting) can be employed.
- the blade-tip-exchangeable cutting tip 1 described above has a rake face 2 that remains intact when not in use, as shown in FIG.
- the rake face following the cutting edge ridges 4 and 41 when the usage status display layer is formed on the entire surface, still has the color of the original usage status display layer, so that the cutting edge ridge 4 , 41 indicates unused.
- the portion of the use state display layer 13 that follows the edge portions 4 and 41 of the cutting edge has a brilliant brass color (gold) when not in use.
- the flank 3 from which the usage status display layer has been removed is made of Al 2 O, which is the base layer 12, and the cutting edge replacement type
- the cutting edge-exchangeable cutting tip 1 is attached to the tool body of the cutting tool, and the cutting edge ridge 4 is the first among the plurality of cutting edge ridges 4, 41, 42, 43.
- the edge of the cutting edge is used.
- the edge 4 of the cutting edge comes into contact with the work 5 and starts cutting the work 5.
- the edge of the cutting edge 4 and the flank 3 In the area the wear of the cutting edge replaceable cutting tip 1 is small due to the base layer 12.
- the use state display layer 13 in the area adjacent to the cutting edge ridge 4 changes color, and the rake face 2 is compared with the adjacent portion of the cutting edge ridge 4. A large initial change occurs. In the discolored area, the color is different from that of the use state display layer 13, and in some cases, the base layer 12 that is much darker than this can be seen.
- a discoloration area 16 which is discolored by darkening is generated after the edge 4 of the cutting edge.
- This discoloration area 16 is immediately and easily identified and exhibits a warning function.
- This discoloration may be caused by the exposure of the base layer 12 as described above, or may be caused by a change caused by heat, for example, an acidification phenomenon.
- the use state display layer 13 in the area adjacent to the edge portion 4 of the cutting edge exhibits a tempered color, so that a discolored area 16 is formed here. This is due to the temperature rise in the vicinity of the edge of the cutting edge that occurs as a result of cutting the workpiece by the cutting edge 4.
- the rake face 2 After a long period of use of the cutting edge-exchangeable cutting tip 1 (after changing the cutting position), the rake face 2 will have the appearance shown in Fig. 6, but the first few minutes Since the appearance shown in Fig. 5 is reached as soon as possible after cutting, for example, the operator can confirm at a glance that the cutting edge ridge 4 has already been used, but the cutting edge 41 has not been used at all. it can.
- the cutting edge ridge 41 is used for the first time, it has the appearance shown in FIG. In this case, the usage state display layer 13 in the area adjacent to the edge part 41 of the cutting edge is discolored and the discolored area 17 is generated, which indicates that the cutting edge part 41 has been used.
- the cutting edge-exchangeable cutting tip 1 shown in Figs. 2, 5, and 6 is a throwaway cutting edge-exchangeable cutting tip having four usable cutting edge ridges 4, 41, 42, and 43. is there.
- the edge of the cutting edge 4, 41, 42, 43 is already used and which is not used yet can be seen at a glance by the color of the usage status display layer 13. Therefore, maintenance of a cutting tool equipped with such an edge-changing type cutting IJ tip can be performed particularly easily.
- the blade tip replaceable cutting tip 1 is provided with the composite coating 14 composed of the base layer 12 and the use state display layer 13 (Fig. 7).
- the usage status display layer is a force formed on one or more rake faces, such as ISO standard SNGN120408.
- the bottom or top surface is a rake face, and with the exception of the former, which is called “vertical use”, the side face is a rake face.
- the usage status display layer 13 has a clear trace left on the usage status display layer 13 when the adjacent edge edges 4, 41, 42, 43 are used even for a short time. Discoloration or alteration. In this way, the usage status display layer 13 is very sensitive, so that another colored layer or material (that is, the base layer) underneath may be visible. In this way, a clear color contrast or brightness contrast is generated by the action of the use state display layer 13, and the used edge edge portion can be easily and immediately identified.
- V has a superior function if it can be easily identified that the edge of the edge of the deviation has been used!
- Cemented carbide powder consisting of 87% by weight WC, 2.5% by weight TaC, 1.0% by weight? ⁇ , 2.0% by weight 1 and 7.5% by weight Co
- the shape of the cutting tip CNMG 120408N GU (manufactured by Sumitomo Electric Hardmetal Co., Ltd.) is obtained by sintering at 1400 ° C for 1 hour in a vacuum atmosphere, followed by flat polishing and cutting edge treatment.
- An identically shaped chip made of cemented carbide was produced and used as the main body. This body has 8 cutting edges And two rake faces and four flank faces.
- the rake face has a chip breaker and has a breaker groove part that is adjacent to the edge edge line part and inclines in a concave shape from the edge edge line part toward the center part of the rake face. Note that no j8 layer was formed on the surface of the main body.
- the following layers were formed in the order of the lower layer force by a known thermal CVD method. That is, in order from the surface side of the body, 0.5 m TiN, 5.5 m TiCN (MT—C VD), 1.5 m ⁇ -alumina (Al 2 O 3), and 0.5 ⁇ m as the outermost layer Coat TiN
- Total film thickness 8.0 / z m (Total film thickness 8.0 / z m).
- 0.5 m TiN (on the body surface side), 5.5 m TiCN and 1.5 ⁇ m ⁇ -alumina (Al 2 O 3) are the base layers.
- the outermost layer of 0.5 / zm TiN is the usage display layer.
- the base layer was laminated on the surface of the main body in order from the left side.
- Each layer was formed by a known thermal CVD method except for the CrN layer of coating No. 6.
- the CrN layer was formed by an ion plating method.
- the following four types of treatment methods A to D were performed on each of the coated main bodies using a known blast method. In each treatment method, the use state display layer was left, and the portion was masked with a jig.
- the coating was blasted without any treatment. Therefore, the surface of the main body exhibited the color of the usage state display layer (for example, the gold color that is TiN in the case of coating No. 1).
- the coating state display layer on the rake face was removed by blasting. Therefore, the flank has the color of the usage status display layer (for example, the gold color that is TiN in the case of coating No. 1), and the rake surface is the color of the base layer (for example, Al O in the case of coating No. 1). Black).
- the usage status display layer for example, the gold color that is TiN in the case of coating No. 1
- the rake surface is the color of the base layer (for example, Al O in the case of coating No. 1). Black).
- the rake face shows the color of the usage status display layer (for example, gold, which is the color of TiN in the case of coating No. 1), and the flank face is the base layer color (eg, A 1 for coating No. 1). o, black).
- the coating state display layer on the entire surface of the main body was removed by blasting. Therefore, the entire surface of the main body (both rake face and flank face) exhibited the color of the base layer (for example, in the case of coating No. 1, the color of AI O is black).
- the surface roughness Ra of each cutting edge-exchangeable cutting tip was measured with a laser microscope (VK-8510, manufactured by Keyence Corporation), and the results (BZA values) are shown in Table 2 and Table 3 below. did .
- the specific measurement points are the surface roughness Ra (A / zm) of the central portion 18 of the breaker groove portion shown in the XII-XI I cross section of FIG.
- the surface roughness Ra (B ⁇ m) at a predetermined location 19 (0.5 mm away from the edge of the cutting edge) was measured (see Fig. 12), and the measurement distance was 100 ⁇ m.
- the outermost layer of the base layer is all black regardless of the type of coating, and the usage status display layer is TiN and ZrN are gold, TiCN is pink, and CrN is silver.
- the cutting edge exchangeable cutting tips No. 3, 7, 11, 15, 19, 23, 25, 26 and 27 are the cutting edge ridge lines. It is easy to determine the usage state of the part and has an extremely high alerting function, and the state of the work material after cutting, in which the work material is welded to the cutting edge, is close to a mirror surface, and the surface roughness is reduced. It was also excellent.
- the surface roughness Ra of the breaker groove is A / zm
- the surface roughness Ra of the flank is B / zm.
- all of the blade-tip-exchangeable cutting tips according to the embodiments of the present invention have BZA ⁇ 1.
- cutting edge replacement cutting tips No. 1, 2, 5, 6, 9, 10, 13, 14, 17, 18, 21, and 22 can determine the usage state of the edge of the cutting edge
- a large amount of work material was deposited on the cutting edge, and the work material after cutting became cloudy and the surface roughness was inferior.
- the cutting edge exchangeable cutting tips Nos. 4, 8, 12, 16, 20, and 24 show the working condition of the cutting edge ridge line portion of the cutting edge exchangeable cutting tip, although the state of the work material after cutting is good. It was difficult to distinguish and it did not have a warning function.
- each blade-tip-exchangeable cutting tip that is an example of the present invention has an excellent effect as compared with each blade-tip-exchangeable cutting tip of each comparative example. Therefore, in order to suppress the welding phenomenon with the work material and prevent the appearance of the work material from being obstructed in the cutting edge exchange type cutting insert, the usage status display layer is not used on the flank surface. If the surface roughness Ra of the specific part of the rake face (breaker groove or land) is A m and the surface roughness Ra of the flank face is B / zm, B / A ⁇ 1 It is clear that it is more effective to make this BZA value smaller by setting BZA ⁇ 0.8 and further BZA ⁇ 0.7.
- the main body of the cutting edge exchangeable cutting tip has four cutting edge ridges, one rake face, and four relief faces.
- the rake face is formed with a chip breaker and adjacent to the cutting edge ridge line.
- the edge edge line portion force of the blade edge had a brake force groove portion inclined in a concave shape toward the center portion of the rake face.
- the following layers were formed in the order of the lower layer force by a known thermal CVD method. That is, in order from the surface side of the body, 0.5 m TiN, 3. ⁇ ⁇ m TiCN (MT—C VD), 1.0 m ⁇ -alumina (Al 2 O 3), and 0.5 ⁇ m as the outermost layer TiN Coaty
- Total film thickness 5.0 m total film thickness 5.0 m.
- 0.5 m TiN (main body side), 3.0 m TiCN and 1.0 ⁇ m ⁇ -alumina (Al O) is the base layer (black), and the outermost layer of 0.5 ⁇ m TiN is the usage status display layer (gold).
- the base layer was laminated on the surface of the main body in order from the left side.
- coating Nos. 8 to 9 were all formed by a known thermal CVD method as in coating No. 7.
- Coating Nos. 10 to 12 were formed by a known PVD method.
- Die cutting tips No. 28 to No. 54 were manufactured. Nos. 30, 34, 38, 42, 46, 50, 52, 53 and 54 are examples of the present invention, and the others are comparative examples.
- the surface roughness Ra (BZA value) was measured in the same manner as in Example 1.
- WGC4100R manufactured by Sumitomo Electric Hard Metal Co., Ltd.
- cutting edge replaceable cutting tips No. 28, 29, 32, 33, 36, 37, 40, 41, 44, 45, 48 and 49 can determine the usage state of the edge of the cutting edge
- a large amount of work material was welded to the cutting edge, and the work material after cutting became cloudy and surface roughness was poor.
- the cutting edge replaceable cutting tips No. 31, 35, 39, 43, 47 and 51 are used to discriminate the usage state of the cutting edge ridge line portion of the cutting edge replaceable cutting tip, although the state of the work material after cutting is good. It was difficult and did not have a warning function.
- the blade edge-exchangeable cutting tip that is an example of the present invention has an excellent effect compared to the blade edge-exchangeable cutting tips of the respective comparative examples.
- Example 1 The main body used in Example 1 was treated with a cutting edge (SiC brush forging was applied to the edge of the cutting edge, and the radius (R) was about 0.05 mm at the intersection of the rake face and flank face. )).
- Example 1 The same coating (Coating Nos. 1 to 6) as in Example 1 was coated on the entire surface of the main body.
- the coating is treated by the brush method (using a diamond brush) and then by the blast method (using alumina sand # 120 (average particle size 100 m) and the pressure is 0.3 MPa).
- the use state display layer of the flank is removed and the use state display layer of the rake face is also 0.18 mm wide from the edge of the edge of the blade (this width is not necessarily uniform, but the maximum width is 0.18 mm. (By the way, this width at the position that divides the angle of the sharp corner of the rake face into two equal parts (hereinafter referred to as RZ2 part) was 0.12 mm.) In this way, the width can be made uniform.
- the rake face excluding the area with a width of 0.18mm from the edge of the edge of the edge exhibits the color of the usage status display layer (for example, the gold color of TiN in the case of coating No. 1), and the flank and edge edge line.
- the rake face of the region with a width of 0.18 mm from the part exhibits the color of the base layer (for example, in the case of coating No. 1, the color of AI O is black)
- the coating is treated by blasting (adopting the same conditions as processing method C1) to remove the flank use state display layer and the rake face use state display layer from the edge of the blade edge to 0.09mm.
- the rake face of the area having a width of 0.09 mm from the part exhibited the color of the base layer (for example, in the case of coating No. 1, the color of AIO is black).
- the coating is treated with the blast method (adopting the same conditions as in processing method C1), then with the brush method (adopting the same conditions as in processing method C1), and the flank usage status display layer
- the use state display layer of the rake face was also removed in a region having a width of 0.16 mm (width at the RZ2 portion: 0.11 mm) from the edge of the cutting edge. Therefore, the rake face excluding the area having a width of 0.16 mm from the edge of the edge of the blade exhibits the color of the use state display layer (for example, the gold color that is TiN in the case of coating No. 1), and the flank and The rake face of the region having a width of 0.16 mm from the edge of the blade edge exhibited the color of the base layer (for example, in the case of coating No. 1, the color of AI O is black).
- Example 1 and A lathe cutting test was performed under the same conditions, and the surface roughness of the work material and the flank wear amount of the cutting edge replaceable cutting tip were measured. The results are shown in Table 7 below. Similar to Example 1, the smaller the surface roughness (Rz) of the work material, the better the smoothness, and the smaller the numerical value of the flank wear amount, the more the wear resistance. It shows that it is excellent.
- the cutting edge exchangeable cutting tip No. 101 127 which is an embodiment of the present invention, is substantially the same as the cutting edge exchangeable cutting tip in which the processing method C is applied to V in Example 1.
- the result was shown.
- these cutting edge-replaceable cutting tips are easy to determine the usage state of the cutting edge ridge line, have an extremely excellent alerting function, and work materials after cutting that do not cause welding of the cutting material to the cutting edges. This state was also close to a mirror surface and excellent in surface roughness.
- the surface roughness Ra of the breaker groove is A m
- the surface roughness Ra of the flank is B / zm
- all of the cutting edge replacement type cutting tips of these embodiments of the present invention have B / A ⁇ l Met.
- the cutting edge replacement type cutting tips No. 119 to 127 are the cutting edge replacement type cutting tips No. 114.
- Example 1 As a result of comparison of Example 3 and Example 1 (in which treatment method C was performed) as a result of the above, it is clear that the formation area of the use state display layer is as shown in FIG. Even when (Example 1) is formed so as to completely cover the ridge line part 4 and wrap around until just before the flank, it is formed on the edge part of the cutting edge as shown in FIGS. Even if it was not (Example 3), it was confirmed that almost the same result was shown.
- Cutting edge treatment on the main body used in Example 2 SiC brush forging is applied to the edge of the cutting edge, and the radius is about 0.05 mm at the intersection of the rake face and the flank face.
- Example 2 The same coating as in Example 2 was applied to the entire surface of the main body (coating Nos. 7 to 1).
- the cutting edge exchangeable cutting tip No. 201 227 which is an example of the present invention, showed substantially the same result as the cutting edge exchangeable cutting tip subjected to the processing method C in Example 2.
- these cutting edge exchangeable cutting tips are used at the edge of the cutting edge. It is easy to determine the state and has an extremely high alerting function. Also, the state of the work material after cutting without welding of the work material to the cutting edge is close to a mirror surface and excellent in surface roughness. It was a thing.
- the surface roughness Ra of the breaker groove is A m and the surface roughness Ra of the flank is B / zm
- all of the cutting edge replacement type cutting tips of these embodiments of the present invention have B / A ⁇ l Met.
- the cutting edge replaceable cutting tips No. 219 to 227 differ from the cutting edge replaceable cutting tips No. 204 to 206 by changing the blasting conditions, respectively (B ZA value). Is given.
- Example 4 In which treatment method C was performed, it is clear from comparison between Example 4 and Example 2 (in which treatment method C was performed) that the formation area of the use state display layer is as shown in FIG. Even if it is formed so as to completely cover the ridgeline part 4 and wrap around until just before the flank (Example 2), it is formed on the edge part of the cutting edge as shown in FIGS. Even if it was not (Example 4), it was confirmed that almost the same result was shown.
- the main body had a delamination of 13 m on the surface, and had eight cutting edge edges, two rake faces, and four flank faces. Further, this rake face has a chip breaker formed, and has a breaker groove part that is adjacent to the edge edge line part and inclines concavely from the edge edge line part toward the center part of the rake face.
- the following layers were formed in the order of the lower layer force by a known thermal CVD method. That is, in order from the surface side of the main body, 0.3 m TiN, 3.8 m TiCN (MT—C VD), 2.3 m ⁇ -alumina (Al ⁇ ), and 0.3 ⁇ m as the outermost layer Coat TiN
- the base layers were laminated on the surface of the main body in order from the left side. Each layer was formed by a known thermal CVD method.
- the coating was blasted and brushed. Therefore, the surface of the main body exhibited the color of the usage status display layer (for example, gold in TiN in the case of coating No. 13) over the entire surface.
- the usage status display layer for example, gold in TiN in the case of coating No. 13
- the coating state display layer on the rake face was removed by blasting. Therefore, the flank face is the color of the usage display layer (for example, Ti for coating No. 13).
- the rake face exhibited the base layer color (for example, the black color which is the color of Al 2 O in the case of coating No. 13).
- the coating state display layer on the entire surface of the main body was removed by blasting. Therefore, the entire surface of the main body (both rake face and flank face) exhibited the color of the base layer (for example, in the case of coating No. 13, the color of AIO is black).
- the rake face use state display layer For the coating, remove the flank use state display layer by blasting and use the rake face use state display layer with a width of 0.08mm from the edge of the edge of the blade (this width is the same as in Example 3; (This width at the RZ2 site was 0.04 mm.)). Therefore, the rake face excluding the area with a width of 0.08mm from the edge of the cutting edge exhibits the color of the usage state display layer (for example, the gold color that is TiN in the case of coating No. 13), and the flank and edge of the cutting edge.
- the rake face of the area with a width of 0.08 mm is the color of the base layer (for example Al in the case of coating No. 13).
- the usage status display layer of the flank only is formed by the blast method so that the usage status display layer completely covers the edge of the cutting edge and wraps around just before the flank. Except for the removal by the above, all other treatments were the same as the treatment method E1.
- the coating is blasted and then brushed to remove the flank usage status display layer and the rake usage status layer is 0.16mm from the edge of the edge. Removal was performed in the region having the width (width at the RZ2 site: 0.12 mm). Therefore, the rake face excluding the area with a width of 0.16mm from the edge of the edge of the edge exhibits the color of the usage status display layer (for example, the gold color of TiN in the case of coating No. 13), and the flank and edge edge line. The rake face of the region having a width of 0.16 mm from the part exhibited the color of the base layer (for example, in the case of coating No. 13, black, which is the color of AIO).
- the difference between the processing methods F1 to F3 is that different residual stresses are applied as shown in Table 10 and Table 11 below by changing the processing conditions of the blast method.
- the outermost layer of the base layer is all black regardless of the type of coating, and the usage status display layer is TiN gold, and TiCN is pink.
- the cutting edge replaceable cutting tip No. 325 has ⁇ -A1 O, which is the uppermost layer of the base layer, at the edge of the cutting edge of the RZ2 portion.
- Cutting time 15 minutes One minute after the start of cutting, the welding state of the work material to the cutting edge and the state of the work surface of the work material were observed, and the flank wear was measured.
- the cutting edge replacement type cutting chip according to the embodiment of the present invention is easy to discriminate the usage state of the cutting edge ridge, and has an extremely excellent alert function.
- the state of the work material after cutting without welding of the work material to the cutting edge was close to the mirror surface, and the flank wear amount and breakage rate were excellent.
- the cutting edge replacement type cutting tip of the comparative example (those not marked with "*" in the table) is treated with the processing methods A 1 and B 1 in the usage state of the cutting edge ridge.
- the work material is slightly welded to the flank face of the cutting edge, the work material after cutting becomes cloudy, the flank face wear amount and the damage rate are inferior, and the processing method D1
- the cutting edge exchangeable cutting chip that has been applied is good in the condition of the work material after cutting, but it is difficult to determine the state of use of the edge of the cutting edge, and it has a warning function. there were.
- each blade-tip-exchangeable cutting tip that is an example of the present invention has an excellent effect as compared with each blade-tip-exchangeable cutting tip of each comparative example. Therefore, in order to suppress the welding phenomenon with the work material and prevent the appearance of the work material from being obstructed in the cutting edge exchange type cutting insert, the usage status display layer is not used on the flank surface.
- At least part of the base layer (the alumina layer referred to above) is a compressive residual stress in a portion that is formed on the rake face and in which the use state indication layer is not formed and in at least a part of the part involved in cutting. It is effective to have
- the flank usage status display layer is removed by blasting, and the rake usage status display layer is 0.07 mm wide from the edge of the blade edge (this width is the same as in Example 3; (The width at the RZ2 site was 0.03 mm.)).
- processing was performed in the same manner as in processing method E8 except that the width from the edge of the cutting edge on the rake face was set to 0.15 mm (width 0.09 mm at the RZ2 portion).
- the coating is blasted and then brushed to remove the flank usage status display layer and the rake usage status layer is 0.14 mm from the edge of the edge. Removal was performed in a region having a width (width at the RZ2 site: 0.11 mm).
- the cutting edge replaceable cutting tip No. 339-5 was obtained by removing a part of the a-Al 2 O layer, which is the uppermost layer of the base layer, and the TiCNO layer below it, at the edge of the edge of the RZ2 part. It was found that the (MT-CVD) layer was exposed on the surface. This cutting edge replacement type cutting chip No. 339-5 showed the highest cutting edge strength in the cutting test.
- each of the cutting edge exchangeable cutting tips (No. 3 39-2 to No. 339-5), which is an example of the present invention, was replaced with the cutting edge exchangeable cutting tip (No. It is clear that it has an excellent effect compared to 339). Therefore, in order to suppress the welding phenomenon with the work material and prevent the appearance of the work material from being hindered in the cutting edge-exchangeable cutting insert, the use state display layer is not a flank.
- the surface roughness Ra of the specific part of the rake face is A ⁇ m and the surface roughness Ra of the flank is ⁇ ⁇ m
- BZA ⁇ 1 It is effective and is a part where the use state display layer is not formed and in at least a part of the part related to cutting (that is, the region treated by the blast method or the combination of this and the brush method in the above). It is effective that at least one layer constituting the base layer (for example, the above-described alumina layer) has a compressive residual stress.
- Cemented carbide powder with the following composition is pressed, followed by sintering in a vacuum atmosphere at 1400 ° C for 1 hour, followed by flat polishing and cutting edge treatment (SiC brush hounging is applied to the edge of the cutting edge and scooped.
- the cutting tip SEMT13T3AGSN—G manufactured by Sumitomo Electric Hard Metal Co., Ltd.
- R round
- a chip made of cemented carbide with the same shape was produced and used as the main body. This body did not have a j8 layer on the surface, but had four edge ridges, one rake face, and four flank faces.
- this rake face was formed with a chip breaker, and had a breaker groove part adjacent to the edge of the edge of the edge and inclined in a concave shape toward the center of the edge of the edge of the edge edge edge line. .
- the following layers were formed in the order of the lower layer force by a known thermal CVD method. That is, 0.3 m TiN, 3.1 ⁇ m TiCN (MT—C VD), 2.1 m ⁇ -alumina (Al 2 O 3), and 0.3 ⁇ m as the outermost layer in order from the surface side of the main body TiN Coaty
- the base layer is 3.1 ⁇ m TiCN and 2. ⁇ alumina (Al ⁇ ).
- the outermost layer 0.3 ⁇ TiN is the usage status display layer.
- the base layer was laminated on the surface of the main body in order from the left side.
- Each layer was formed by a known thermal CVD method.
- each of the coated main bodies was subjected to the following 13 types of treatment methods A2 to H3 using a known blasting method or a combination of this and a known brushing method.
- the part where the usage state display layer is to be left was masked using a jig.
- the coating was blasted and brushed. Therefore, the surface of the main body exhibited the color of the use state display layer (for example, gold in TiN in the case of coating No. 18) over the entire surface.
- the use state display layer for example, gold in TiN in the case of coating No. 18
- the coating state display layer on the rake face was removed by blasting. Therefore, the flank face is the color of the usage status display layer (for example, Ti for coating No. 18).
- the rake face exhibited the base layer color (for example, the black color that is Al O in the case of coating No. 18).
- the coating state display layer on the entire surface of the main body was removed by blasting. Therefore, the entire surface of the main body (both rake face and flank face) exhibited the color of the base layer (for example, in the case of coating No. 18, the color of AI O is black).
- the flank usage status display layer is removed by blasting, and the rake usage status display layer is 0.07 mm wide from the edge of the blade edge (this width is the same as in Example 3; (The width at the RZ2 site was 0.05 mm.)). Therefore, the rake face excluding the area with a width of 0.07mm from the edge of the cutting edge shows the color of the usage state display layer (for example, the gold color that is TiN in the case of coating No. 18), and the flank and edge of the cutting edge.
- the rake face of the region with a width of 0.07 mm to 0.07 mm is the color of the base layer (for example Al for coating No. 18).
- processing method G1 all processing was the same as processing method G1, except that the width of the edge edge line force on the rake face was 0.12 mm (width at R Z2 part: 0.11 mm). .
- the difference between processing methods G2 to G5 is that different residual stresses are applied as shown in Table 14 and Table 15 below by changing the processing conditions of the blast method.
- the usage status display layer of the flank only is formed by the blast method so that the usage status display layer completely covers the edge of the edge of the blade and wraps around just before the flank. Except for the removal by, all the other treatments were the same as the treatment method G1.
- the coating is blasted and then brushed to remove the flank usage status display layer and the rake usage status layer is 0.15mm from the edge of the edge. It was removed in a region having a width (width at RZ2 site: 0.13 mm). Therefore, the rake face excluding the area with a width of 0.15mm from the edge of the edge of the edge exhibits the color of the usage state display layer (for example, the gold color of TiN in the case of coating No. 18), and the flank and edge edge line. The rake face of the region having a width of 0.15 mm from the part exhibited the color of the base layer (for example, in the case of coating No. 18, the color of AIO is black).
- treatment methods H1 to H3 are that different residual stresses are applied as shown in Table 14 and Table 15 below by changing the treatment conditions of the blast method.
- the outermost layer of the base layer is all black regardless of the type of coating, and the usage state display layer is TiN gold, and TiCN is pink.
- the cutting edge replaceable cutting tip No. 425 has a top layer of a-AlO at the cutting edge ridge line portion of the RZ2 portion.
- the cutting edge replacement type cutting chip according to the embodiment of the present invention is easy to determine the usage state of the edge of the cutting edge and has an extremely excellent alert function.
- the state of the work material after cutting, in which the work material was not welded to the cutting edge was also glossy, and the flank wear amount and breakage rate were also excellent.
- the cutting edge replacement type cutting tip of the comparative example (without the "*" mark in the table) has the processing methods A2 and B2, and the usage status of the edge of the cutting edge is not distinguished.
- the work material is slightly welded to the flank face of the cutting edge, the work material after cutting becomes cloudy, the flank face wear amount and the damage rate are inferior, and processing method D2 was applied.
- the cutting edge replacement type cutting chip was good in the condition of the work material after cutting, but it was difficult to determine the usage state of the edge of the cutting edge, and it did not have a warning function.
- each blade-tip-exchangeable cutting tip that is an example of the present invention has an excellent effect as compared with each blade-tip-exchangeable cutting tip of each comparative example. Therefore, in order to suppress the welding phenomenon with the work material and prevent the appearance of the work material from being obstructed in the cutting edge exchange type cutting insert, the usage status display layer is not used on the flank surface.
- At least part of the base layer (the alumina layer referred to above) is a compressive residual stress in a portion that is formed on the rake face and in which the use state indication layer is not formed and in at least a part of the part involved in cutting. It is effective to have
- Cutting edge exchangeable cutting tip No. 401 in Example 7 is replaced with the following four kinds of treatment methods G8, G9, H4 and H5 instead of the treatment method A2, and four kinds of blade edge exchangeable cutting tips differ from each other. No. 401-2 to No. 401-5 were obtained.
- flank use state display layer For the coating, remove the flank use state display layer by blasting and use the rake face use state display layer with a width of 0.08mm from the edge of the edge of the blade (this width is the same as in Example 3; (This width at the RZ2 site was 0.04 mm.)).
- processing was performed in the same manner as in processing method G8, except that the width of the edge edge line part force on the rake face was 0.14 mm (width in the R Z2 region was 0.10 mm).
- the coating is blasted and then brushed to remove the flank usage status display layer and the rake usage status layer is 0.16mm from the edge of the edge. Removal was performed in the region having the width (width at the RZ2 site: 0.14 mm).
- each of the cutting edge exchangeable cutting tips (No. 4 01-2 to No. 401-5), which is an example of the present invention, is replaced with the cutting edge exchangeable cutting tip (No. It is clear that it has an excellent effect compared to 401). Therefore, in order to suppress the welding phenomenon with the work material and prevent the appearance of the work material from being hindered in the cutting edge-exchangeable cutting insert, the use state display layer is not a flank.
- the surface roughness Ra of the specific part of the rake face is A ⁇ m and the surface roughness Ra of the flank is ⁇ ⁇ m
- BZA ⁇ 1 It is effective and is a part where the use state display layer is not formed and in at least a part of the part related to cutting (that is, the region treated by the blast method or the combination of this and the brush method in the above). It is effective that at least one layer constituting the base layer (for example, the above-described alumina layer) has a compressive residual stress.
- the cutting edge exchangeable cutting tip for the cutting force and the cutting edge for the milling process the cutting edge exchangeable cutting tip for the end mill cage, and the exchangeable cutting edge for the end mill cage are shown.
- Cutting tip, cutting edge replacement tool for metal saw processing, cutting edge for gear cutting tool replacement cutting tip, cutting tool replacement tool for reaming, cutting edge replacement tool for tapping, cutting tip or cutting edge for pin milling of crankshaft the present invention can be applied to an exchangeable cutting tip and the like, and the effect of the present invention is shown.
Abstract
Description
Claims
Priority Applications (5)
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KR1020077003529A KR101167343B1 (ko) | 2004-12-03 | 2005-11-25 | 날끝 교환형 절삭팁 및 그 제조 방법 |
US11/792,078 US8133576B2 (en) | 2004-12-03 | 2005-11-25 | Coated cutting insert and manufacturing method thereof |
EP05809750.2A EP1818124B1 (en) | 2004-12-03 | 2005-11-25 | Coated cutting insert |
JP2006547863A JP4739234B2 (ja) | 2004-12-03 | 2005-11-25 | 刃先交換型切削チップおよびその製造方法 |
IL180049A IL180049A (en) | 2004-12-03 | 2006-12-13 | Coated cutting insert and manufacturing method thereof |
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JP2004351705 | 2004-12-03 | ||
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US (1) | US8133576B2 (ja) |
EP (1) | EP1818124B1 (ja) |
JP (1) | JP4739234B2 (ja) |
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Cited By (10)
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 |
WO2009005924A3 (en) * | 2007-06-28 | 2009-02-26 | Kennametal Inc | Cutting insert with a wear-resistant coating scheme exhibiting wear indication and method of making the same |
JP2012505761A (ja) * | 2008-10-21 | 2012-03-08 | デグテック エルティーディー | 切削工具及びその表面処理方法 |
CN105517739A (zh) * | 2013-09-16 | 2016-04-20 | 伊斯卡有限公司 | 包括切屑控制布置的精加工深度车削镶件 |
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JP2008105148A (ja) * | 2006-10-26 | 2008-05-08 | Sumitomo Electric Hardmetal Corp | 刃先交換型切削チップ |
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RU2469819C2 (ru) * | 2007-06-28 | 2012-12-20 | Кеннаметал Инк. | Режущая вставка со структурой износостойкого покрытия с индикацией истирания и способ ее изготовления |
JP2012505761A (ja) * | 2008-10-21 | 2012-03-08 | デグテック エルティーディー | 切削工具及びその表面処理方法 |
CN105517739A (zh) * | 2013-09-16 | 2016-04-20 | 伊斯卡有限公司 | 包括切屑控制布置的精加工深度车削镶件 |
JPWO2017146131A1 (ja) * | 2016-02-24 | 2018-12-20 | 京セラ株式会社 | 切削インサート |
WO2017188266A1 (ja) * | 2016-04-25 | 2017-11-02 | 京セラ株式会社 | インサート及び切削工具 |
JPWO2017188266A1 (ja) * | 2016-04-25 | 2019-02-28 | 京セラ株式会社 | インサート及び切削工具 |
US11123812B2 (en) | 2016-04-25 | 2021-09-21 | Kyocera Corporation | Insert and cutting tool |
JP2020001156A (ja) * | 2018-06-29 | 2020-01-09 | ヘラミエンタス プレジス,エセ.エレ. | 加工工具に適用可能な切削インサートおよびこれを装着 した加工工具 |
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 |
JP7276980B1 (ja) * | 2022-07-21 | 2023-05-18 | 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 |
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JPWO2006059551A1 (ja) | 2008-06-05 |
JP4739234B2 (ja) | 2011-08-03 |
KR20070073731A (ko) | 2007-07-10 |
US8133576B2 (en) | 2012-03-13 |
EP1818124A4 (en) | 2010-08-04 |
KR101167343B1 (ko) | 2012-07-19 |
EP1818124A1 (en) | 2007-08-15 |
US20070298230A1 (en) | 2007-12-27 |
IL180049A (en) | 2011-09-27 |
IL180049A0 (en) | 2007-05-15 |
EP1818124B1 (en) | 2015-03-25 |
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