WO2018003272A1 - 切削工具 - Google Patents
切削工具 Download PDFInfo
- Publication number
- WO2018003272A1 WO2018003272A1 PCT/JP2017/016710 JP2017016710W WO2018003272A1 WO 2018003272 A1 WO2018003272 A1 WO 2018003272A1 JP 2017016710 W JP2017016710 W JP 2017016710W WO 2018003272 A1 WO2018003272 A1 WO 2018003272A1
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- WO
- WIPO (PCT)
- Prior art keywords
- rake face
- cutting tool
- diamond layer
- tool according
- face
- Prior art date
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Classifications
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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
- B23B27/18—Cutting tools of which the bits or tips or cutting inserts are of special material with cutting bits or tips or cutting inserts rigidly mounted, e.g. by brazing
- B23B27/20—Cutting tools of which the bits or tips or cutting inserts are of special material with cutting bits or tips or cutting inserts rigidly mounted, e.g. by brazing with diamond bits or cutting inserts
-
- 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
-
- 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
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
- B23C5/10—Shank-type cutters, i.e. with an integral shaft
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
- B23C5/10—Shank-type cutters, i.e. with an integral shaft
- B23C5/1009—Ball nose end mills
-
- 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
- B23B2226/00—Materials of tools or workpieces not comprising a metal
- B23B2226/31—Diamond
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2228/00—Properties of materials of tools or workpieces, materials of tools or workpieces applied in a specific manner
- B23B2228/10—Coatings
- B23B2228/105—Coatings with specified thickness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2226/00—Materials of tools or workpieces not comprising a metal
- B23C2226/31—Diamond
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2228/00—Properties of materials of tools or workpieces, materials of tools or workpieces applied in a specific manner
- B23C2228/10—Coating
Definitions
- Patent Document 1 a cutting tool described in JP-A-2015-85462
- Patent Document 1 a cutting tool in which a base material is coated with a diamond layer.
- the tool main body of the cutting tool described in Patent Document 1 has a flank, a rake face, and a cutting edge formed on the ridge line of the flank and the rake face.
- the tool body is covered with a hard coating.
- the hard coating covering the rake face side of the tool body is removed by a laser or the like.
- the cutting tool includes a base material and a diamond layer covering the base material.
- the cutting tool which concerns on 1 aspect of this indication has a rake face, the flank which continues to a rake face, and the cutting edge comprised by the ridgeline of a rake face and a flank.
- the rake face has a first rake face and a second rake face arranged between the first rake face and the flank face.
- the angle formed between the second rake face and the face on the rake face side of the substrate is a negative angle.
- the second rake face is formed in the diamond layer.
- FIG. 1 is a top view of the cutting tool according to the first embodiment.
- FIG. 2 is an enlarged top view of region II in FIG. 1 in the vicinity of the tip of the cutting tool according to the first embodiment.
- FIG. 3 is a schematic diagram of cutting using the cutting tool according to the first embodiment.
- 4A is a cross-sectional view taken along line IV-IV in FIG.
- FIG. 4B is an enlarged view of IV-B in FIG. 4A.
- FIG. 4C is an enlarged view taken along IV-C in FIG. 4A.
- FIG. 5 is a process diagram of the manufacturing method of the cutting tool according to the first embodiment.
- FIG. 6 is a cross-sectional view of the cutting tool according to the first embodiment in a state after the diamond layer coating step and before the diamond layer removing step.
- FIG. 1 is a top view of the cutting tool according to the first embodiment.
- FIG. 2 is an enlarged top view of region II in FIG. 1 in the vicinity of the tip of the cutting tool according to the
- FIG. 7 is a cross-sectional view of the cutting tool according to the first embodiment after the rake face treatment process and before the inclined face treatment process.
- FIG. 8 is a cross-sectional view in a cross section perpendicular to the cutting edge of the cutting tool according to the second embodiment.
- FIG. 9A is a cross-sectional view of the cutting tool according to the second embodiment after the rake face treatment step and before the inclined face treatment step.
- FIG. 9B is a cross-sectional view of the cutting tool according to the first modified example of the second embodiment after the rake face treatment step and before the inclined face treatment step.
- FIG. 9C is a cross-sectional view of the cutting tool according to the second modified example of the second embodiment after the rake face treatment process and before the inclined face treatment process.
- FIG. 9A is a cross-sectional view of the cutting tool according to the second embodiment after the rake face treatment step and before the inclined face treatment step.
- FIG. 9B is a cross-sectional view of the
- FIG. 10A is an example of a cross-sectional view in a cross section perpendicular to the cutting edge of the cutting tool according to the third embodiment.
- FIG. 10B is another example of a cross-sectional view in a cross section perpendicular to the cutting edge of the cutting tool according to the third embodiment.
- FIG. 11 is a cross-sectional view in a direction perpendicular to the cutting edge of the cutting tool according to the first modification of the third embodiment.
- FIG. 12 is a cross-sectional view in a direction perpendicular to the cutting edge of the cutting tool according to the second modification of the third embodiment.
- FIG. 13 is a cross-sectional view of the cutting tool according to the third embodiment after the rake face treatment step and before the inclined face treatment step.
- the present disclosure has been made in view of such problems of the prior art. Specifically, the present disclosure provides a cutting tool capable of improving the durability of the cutting edge and suppressing the chipping of the work material. [Effects of the present disclosure] According to the above, it is possible to improve the durability of the cutting edge and to suppress the chipping of the work material.
- a cutting tool includes a base material and a diamond layer covering the base material.
- the cutting tool which concerns on 1 aspect of this indication has a rake face, the flank which continues to a rake face, and the cutting edge comprised by the ridgeline of a rake face and a flank.
- the rake face has a first rake face and a second rake face arranged between the first rake face and the flank face.
- the angle formed between the second rake face and the face on the rake face side of the substrate is a negative angle.
- the second rake face is formed in the diamond layer.
- the present inventors have determined that a second rake face provided between the first rake face and the flank face in a cutting tool including a base material and a diamond layer covering the base material.
- a negative angle with respect to the rake face side of the base material the durability of the cutting edge is improved and the chipping of the work material can be suppressed. Therefore, according to the cutting tool of (1), the durability of the cutting edge can be improved, and the chipping of the work material can be suppressed.
- the rake face side surface of the base material is covered with a diamond layer
- the second rake face is a diamond layer covering the flank face side surface of the base material. It may be formed straddling the diamond layer covering the rake face side of the substrate.
- the first rake face may be inclined so as to approach the base material as the distance from the second rake face increases.
- the inclination of the first rake face and the second rake face acts as a breaker, and the facet is finely divided. Therefore, biting of the facet during cutting is suppressed. Therefore, according to the cutting tool of (3), it becomes possible to suppress the deterioration of the gloss of the processed surface of the work material by the facet.
- the angle formed between the second rake face and the face on the rake face side of the substrate may be -20 ° or more and less than 0 °.
- the thickness of the diamond layer covering the flank side of the substrate may be 4 ⁇ m or more and 30 ⁇ m or more.
- the durability of the cutting edge can be further improved and the chipping of the work material can be further suppressed.
- the radius of curvature at the tip of the cutting edge is a value obtained by multiplying the thickness of the diamond layer covering the flank side of the substrate by 0.1. It may be the following.
- the diamond layer may be clustered on the surface opposite to the substrate.
- the curvature radius of the tip of the substrate may be larger than the curvature radius of the tip of the cutting edge. According to the cutting tool of (8), chipping of the substrate can be suppressed.
- the radius of curvature of the tip of the substrate may be not less than 0.5 ⁇ m and not more than 15 ⁇ m. According to the cutting tool of (9), chipping of the substrate can be further suppressed.
- FIG. 1 is a top view of the cutting tool according to the first embodiment.
- the cutting tool according to the first embodiment has a tip portion 6, a body portion 7, and a shank portion 8.
- the cutting tool according to the first embodiment is a ball end mill.
- the cutting tool according to the first embodiment is not limited to the ball end mill.
- the cutting tool according to the first embodiment may be a radius end mill or the like.
- FIG. 2 is an enlarged top view of a region II in FIG. 1 near the tip of the cutting tool according to the first embodiment.
- the cutting tool according to the first embodiment has a rake face 1 and a flank 2 (see FIG. 4A).
- the rake face 1 is continuous with the flank face 2.
- a ridge line between the rake face 1 and the flank face 2 constitutes a cutting edge 3.
- FIG. 3 is a schematic diagram of cutting using the cutting tool according to the first embodiment. As shown in FIG. 3, the cutting tool according to the first embodiment rotates about the central axis A, and the cutting edge 3 is urged by the work material, thereby cutting the work material. Done.
- FIG. 4A is a cross-sectional view taken along IV-IV in FIG.
- FIG. 4B is an enlarged view of IV-B in FIG. 4A.
- the cutting tool according to the first embodiment includes a base material 4 and a diamond layer 5.
- the base material 4 is a cemented carbide which is a sintered body containing a powder such as WC (tungsten carbide) and a binder such as Co (cobalt).
- the diamond layer 5 is, for example, a layer containing diamond crystals.
- the diamond layer 5 is, for example, a diamond polycrystalline film.
- the diamond layer 5 may contain a non-diamond component (for example, an amorphous component).
- the diamond layer 5 may not contain diamond crystals.
- the diamond layer 5 may be a DLC (Diamond Like Carbon) layer.
- the surface layer of the diamond layer 5 (the layer located on the surface opposite to the base material 4) is preferably in a cluster shape.
- the diamond layer 5 being clustered means that secondary particles having a crystal grain boundary smaller than the primary particles are filled between primary particles having a large crystal grain size.
- the clustered diamond layer has a relatively low hardness. Therefore, in this case, the damage layer due to laser processing is reduced on the surface, and the tool life is improved by 5 to 10%.
- the diamond layer 5 covers the base material 4. More specifically, in the cutting tool according to the first embodiment, the diamond layer 5 covers only the surface on the flank 2 side of the substrate 4. However, as will be described later, the diamond layer 5 may cover the surface of the base material 4 on the rake face 1 side. In the following, the surface on the rake face 1 side of the substrate 4 is referred to as a top face 41.
- the thickness of the diamond layer 5 covering the surface on the flank 2 side of the substrate 4 is a thickness h1.
- the thickness h1 is not less than 3 ⁇ m and not more than 35 ⁇ m, for example.
- the thickness h1 is preferably 4 ⁇ m or more and 30 ⁇ m or less.
- the rake face 1 has a first rake face 11 and a second rake face 12.
- the second rake face 12 is provided between the first rake face 11 and the flank face 2.
- the second rake face 12 is formed in the diamond layer 5.
- at least part of the second rake face 12 escapes more than on the diamond layer 5 (that is, on the extended line of the top face 41 of the substrate 4) covering the surface on the flank 2 side of the substrate 4. It is formed on the diamond layer 5) formed on the surface 2 side.
- the second rake face 12 is constituted by the surface of the diamond layer 5 covering the surface on the flank 2 side of the substrate 4.
- the cutting edge 3 is formed on the diamond layer 5 covering the surface of the base material 4 on the flank 2 side.
- the rake face 11 is composed of a top face 41 of the substrate 4.
- the second rake face 12 is inclined with respect to the top face 41 of the base material 4.
- the angle at which the second rake face 12 is inclined with respect to the top face 41 of the substrate 4 is an angle ⁇ .
- the angle ⁇ is a negative angle.
- the second rake face 12 rotates counterclockwise with respect to the top face 41 of the substrate 4 in a state where the cutting edge 3 faces leftward. The state that is.
- the angle ⁇ is preferably ⁇ 30 ° or more and less than 0 °. More preferably, the angle ⁇ is not less than ⁇ 20 ° and less than 0 °. Regarding the angle ⁇ , “ ⁇ (minus)” in front of the numeral means a negative angle.
- the tip of the cutting edge 3 of the diamond layer 5 has a curvature radius R1.
- the curvature radius R1 is preferably 0.1 ⁇ h1 or less.
- the curvature radius R1 is preferably 5 ⁇ m or less.
- the curvature radius R1 is more preferably 1.5 ⁇ m or less.
- FIG. 4C is an enlarged view taken along IV-C in FIG. 4A.
- the substrate 4 has a radius of curvature R2 at the tip.
- the tip of the substrate 4 is a portion where the surface (top surface 41) on the rake face 1 side of the substrate 4 and the surface on the flank 2 side of the substrate 4 are continuous.
- the curvature radius R2 is preferably larger than the curvature radius R1.
- the curvature radius R2 is preferably 15 ⁇ m or less.
- the curvature radius R2 is more preferably 5 ⁇ m or less.
- the radius of curvature R2 is particularly preferably 1.5 ⁇ m or less.
- FIG. 5 is a process diagram of the manufacturing method of the cutting tool according to the first embodiment. As shown in FIG. 5, the manufacturing method of the cutting tool which concerns on 1st Embodiment has diamond layer coating process S1 and diamond layer removal process S2.
- the diamond layer 5 is formed on the substrate 4.
- the diamond layer 5 is formed by, for example, HFCVD (Hot Filament Chemical Vapor Deposition).
- FIG. 6 is a cross-sectional view of the cutting tool according to the first embodiment in a state after the diamond layer coating step and before the diamond layer removing step. As shown in FIG. 6, in a state after the diamond layer coating step S1 and before the diamond layer removing step S2, the surface on the rake face 1 side (top surface 41) of the base material 4 and The surface on the flank 2 side of the substrate 4 is covered with the diamond layer 5.
- the periphery of the tip of the cutting tool according to the first embodiment is rounded. This is because when the diamond layer 5 is formed, the temperature around the tip of the cutting tool according to the first embodiment is higher than that of the other portions, so that the formation of the diamond layer 5 is promoted.
- the periphery of the tip of the cutting tool according to the first embodiment is rounded. Therefore, at this stage, the cutting resistance of the cutting tool according to the first embodiment is high and the sharpness is poor.
- the diamond layer removal step S2 includes a rake face treatment step S21 and an inclined face treatment step S22.
- the rake face processing step S21 the diamond layer 5 covering the face (top face 41) on the rake face 1 side of the substrate 4 is removed.
- the removal of the diamond layer 5 is performed, for example, by irradiating the rake face 1 with a laser or the like.
- the laser used in this step is, for example, a second harmonic of a YVO 4 laser.
- the spot diameter of the laser used in the diamond layer removing step S2 is preferably 20 ⁇ m or less. More preferably, the spot diameter of the laser used in the diamond layer removing step S2 is 10 ⁇ m or less.
- the diamond layer 5 covering the surface of the base material 4 on the rake face 1 side can be accurately removed, the radius of curvature R1 of the cutting edge 3 can be reduced.
- the tool life is improved by 5 to 10% by improving the sharpness of the cutting tool according to the first embodiment.
- FIG. 7 is a cross-sectional view of the cutting tool according to the first embodiment after the rake face treatment process and before the inclined face treatment process. As shown in FIG. 7, after the rake face processing step S21 is performed, the diamond layer 5 covering the face (top face 41) on the rake face 1 side of the substrate 4 is removed.
- the cutting tool according to the first embodiment is still low in durability, and when the amount of processing increases, the cutting edge 3 is damaged, and the workpiece is liable to be chipped.
- the second rake face 12 is formed. More specifically, the cutting edge 3 is irradiated by irradiating a laser from the side of the rake face 1 near the tip of the cutting edge 3 of the cutting tool according to the first embodiment after the rake face treatment step S21 is performed. The diamond layer 5 near the tip is removed. From the above steps, the cutting tool according to the first embodiment is obtained.
- the cutting tool according to the first embodiment has the second rake face 12, and the second rake face 12 and the top face 41 of the substrate 4 form a negative angle.
- the cutting edge 3 of the cutting tool according to the first embodiment is sharper than a state where the diamond layer 5 is simply coated on the base material 4 by CVD or the like. Therefore, in the cutting tool according to the first embodiment, the durability of the cutting edge 3 is improved, and the chipping of the work material can be suppressed.
- the cutting edge 3 is less likely to be damaged by the main component force applied during cutting. . Therefore, the durability of the cutting edge 3 can be further improved in the cutting tool according to the first embodiment.
- the cutting edge 3 When the absolute value of the negative value of the angle ⁇ is increased, the cutting edge 3 is less likely to be damaged by the main component force applied to the cutting edge 3 during cutting. On the other hand, the sharpness of the cutting edge 3 becomes worse as the absolute value of the negative value of the angle ⁇ increases. Therefore, in the cutting tool according to the first embodiment, when the angle ⁇ is ⁇ 20 ° or more and less than 0 °, both the durability and the sharpness of the cutting edge 3 can be achieved.
- the cutting edge 3 is less likely to be damaged by the main component force applied to the cutting edge 3 during cutting.
- the sharpness of the cutting edge 3 becomes worse as the width of the second rake face 12 becomes wider. Since the second rake face 12 is formed on the diamond layer 5 that covers the flank 2 side surface of the substrate 4, the diamond layer that covers the flank 2 side surface of the substrate 4 is thick. Indeed, the width of the second rake face 12 becomes wider. Therefore, in the cutting tool according to the first embodiment, when the thickness of the diamond layer 5 covering the flank 2 side surface of the base material 4 is 4 ⁇ m or more and 30 ⁇ m or less, the durability of the cutting edge 3 is achieved. Both sex and sharpness can be achieved.
- the thickness of the diamond layer 5 covering the flank 2 side surface of the substrate 4 is less than 4 ⁇ m, the diamond layer 5 is likely to break.
- the thickness of the diamond layer 5 covering the flank 2 side surface of the base material 4 exceeds 30 ⁇ m, the residual stress is large and easily peeled off. Therefore, in the cutting tool according to the first embodiment, when the thickness of the diamond layer 5 covering the flank 2 side of the substrate 4 is 4 ⁇ m or more and 30 ⁇ m or less, the diamond layer 5 is cracked or peeled off. Can be suppressed.
- the curvature radius R1 of the tip of the cutting edge 3 is 0.1 ⁇ h1 or less, the durability of the cutting edge 3 can be further improved and the sharpness of the cutting edge 3 can be improved. And the chipping of the work material can be further suppressed.
- FIG. 8 is a cross-sectional view in a cross section perpendicular to the cutting edge of the cutting tool according to the second embodiment.
- the cutting tool according to the second embodiment has a base material 4 and a diamond layer 5.
- the cutting tool according to the second embodiment has a rake face 1, a flank face 2, and a cutting edge 3.
- the rake face 1 has a first rake face 11 and a second rake face 12.
- the cutting tool according to the second embodiment is the same as the cutting tool according to the first embodiment.
- the diamond layer 5 did not cover the top surface 41 of the substrate 4.
- the diamond layer 5 covers the top surface 41 of the substrate 4. That is, in the cutting tool according to the second embodiment, the first rake face 11 is constituted by the diamond layer 5.
- the second rake face 12 covers the diamond layer 5 covering the top face 41 of the base material 4 and the surface on the flank 2 side of the base material 4. It is formed so as to straddle the diamond layer 5.
- the cutting tool according to the second embodiment is different from the cutting tool according to the first embodiment.
- the diamond layer 5 covering the surface (top surface 41) on the rake face 1 side of the substrate 4 has a thickness h2.
- the diamond layer 5 covering the surface on the flank 2 side of the substrate 4 has a thickness h1 as described above.
- the thickness h2 is thinner than the thickness h1. That is, the thickness h2 is 0 ⁇ m ⁇ h2 ⁇ 4 ⁇ m.
- the method for manufacturing a cutting tool according to the second embodiment includes a diamond layer coating step S1 and a diamond layer removing step S2.
- the diamond layer removing step S2 includes a rake face treating step S21 and an inclined face treating step S22. Is the same as the manufacturing method of the cutting tool according to the first embodiment.
- FIG. 9A is a cross-sectional view of the cutting tool according to the second embodiment after the rake face treatment step and before the inclined surface treatment step.
- FIG. The method differs from the manufacturing method according to the first embodiment in that not all of the layer 5 is removed.
- FIG. 9B is a cross-sectional view of the cutting tool according to the first modification of the second embodiment after the rake face treatment process and before the inclined face treatment process.
- the surface of the diamond layer 5 covering the face (top face 41) on the rake face 1 side of the base material 4 is inclined with respect to the top face 41. It may be.
- FIG. 9C is a cross-sectional view of the cutting tool according to the second modified example of the second embodiment after the rake face treatment process and before the inclined face treatment process.
- the rake face processing step S21 may be performed such that a rounded portion around the tip of the cutting tool according to the second embodiment is removed.
- the effect of the cutting tool according to the second embodiment will be described below.
- the interface between the base material 4 and the diamond layer 5 covering the flank 2 side of the base material 4 is exposed. Therefore, the diamond layer 5 covering the flank 2 side of the base material 4 is likely to peel off from the interface between the base material 4 and the diamond layer 5 covering the flank face 2 side of the base material 4. .
- the surface (top surface 41) of the base material 4 on the rake face 1 side is covered with the diamond layer 5, and the second rake face 12 is the base material 4. Since it is formed so as to straddle the diamond layer 5 covering the rake face 1 side (top face 41) and the diamond layer 5 covering the flank 2 side of the base material 4, The interface between the material 4 and the diamond layer 5 covering the flank 2 side surface of the substrate 4 is not exposed. Therefore, in the cutting tool according to the second embodiment, wear at the boundary between the diamond layer 5 covering the flank 2 side surface of the base material 4 and the base material 4 is suppressed, and the base material 4 escapes.
- the diamond layer that covers the flank 2 side surface of the substrate 4 is dispersed by dispersing the concentrated load on the boundary between the diamond layer 5 that covers the surface 2 side surface and the substrate 4 5 is difficult to peel off. That is, according to the cutting tool according to the second embodiment, the flank peeling of the diamond layer 5 covering the flank 2 side surface of the substrate 4 can be suppressed.
- the face on the rake face 1 side (the top face 41) of the base material 4 is covered with the diamond layer 5. Contact with the rake face 1 side can be prevented. That is, in the cutting tool according to the second embodiment, wear of the rake face can be suppressed.
- FIG. 10A is an example of a cross-sectional view in a cross section perpendicular to the cutting edge of the cutting tool according to the third embodiment.
- FIG. 10B is another example of a cross-sectional view in a cross section perpendicular to the cutting edge of the cutting tool according to the third embodiment.
- the cutting tool according to the third embodiment includes a base material 4 and a diamond layer 5.
- the cutting tool according to the third embodiment has a rake face 1, a flank face 2, and a cutting edge 3.
- the surface (top surface 41) on the rake face 1 side of the base material 4 is covered with the diamond layer 5.
- the cutting tool according to the third embodiment is the same as the cutting tool according to the second embodiment.
- the cutting tool according to the third embodiment is related to the third embodiment in that the first rake face 11 is inclined with respect to the face (top face 41) on the rake face 1 side of the substrate 4.
- the cutting tool is different from the cutting tool according to the second embodiment. More specifically, the first rake face 11 is inclined so as to approach the base material 4 as the distance from the second rake face 12 increases.
- the first rake face 11 has a width W.
- the width W is a width in a direction perpendicular to the cutting edge 3.
- the rake face 1 has a third rake face 13.
- the third rake face 13 is disposed at a position where the first rake face 11 is sandwiched between the third rake face 13 and the second rake face 12.
- the third rake face 13 is not covered with the diamond layer 5 and is constituted by a face (top face 41) on the rake face 1 side of the base material 4, but as shown in FIG. 10B, The third rake face 13 may be constituted by the diamond layer 5.
- FIG. 11 is a cross-sectional view in a direction perpendicular to the cutting edge of the cutting tool according to the first modification of the third embodiment.
- the rake face 1 further has a fourth rake face 14.
- the fourth rake face 14 is disposed between the first rake face 11 and the second rake face 12. That is, the first rake face 11 and the second rake face 12 may not be continuous.
- the fourth rake face 14 is parallel to the face (top face 41) on the rake face 1 side of the substrate 4.
- the fourth rake face 14 may be inclined so as to approach the base material 4 as the distance from the second rake face 12 increases.
- FIG. 12 is a cross-sectional view in a direction perpendicular to the cutting edge of the cutting tool according to the second modification of the third embodiment. As shown in FIG. 12, in the cutting tool according to the second modification of the third embodiment, the width W of the first rake face 11 is 100 ⁇ m or more.
- the cutting tool manufacturing method according to the third embodiment includes a diamond layer coating step S1 and a diamond layer removing step S2, which includes a rake face treating step S21 and an inclined face treating step S22. Is the same as the manufacturing method of the cutting tool according to the second embodiment.
- FIG. 13 is a cross-sectional view of the cutting tool according to the third embodiment after the rake face treatment step and before the inclined face treatment step.
- the cutting tool manufacturing method according to the third embodiment has a surface on the rake face 1 side (the top) of the base material 4 so as to have an inclination that approaches the base material 4 side as the tool is moved away from the tip of the tool.
- the cutting tool manufacturing method according to the second embodiment is different in that the diamond layer 5 formed on the surface 41) is left.
- the first rake face 11 is inclined so as to approach the base material 4 as the distance from the second rake face 12 increases, the first rake face 11 is the second rake face 11. Compared with the cutting tool which concerns on embodiment, it is dented on the base-material 4 side more.
- the cutting tool concerning a 3rd embodiment, it can control that a facet of a work material damages a work material. That is, according to the cutting tool according to the third embodiment, it is possible to suppress the deterioration of the gloss of the processed surface of the work material.
- the third rake face 13 is constituted by the diamond layer 5
- the width W of the first rake face 11 is 100 ⁇ m or more, it is possible to suppress the facets of the work material from contacting the base material 4. That is, in this case, rake face wear can be reduced.
- the same effect can be obtained when the fourth rake face 14 is provided.
- the axial cut was 0.1 mm, and the radial cut was 0.3 mm.
- the tool rotation speed was 20000 rotations / minute and the feed amount was 200 m / minute.
- a cemented carbide plate AF1 manufactured by Sumitomo Electric Hardmetal Co., Ltd. was used as a work material. During this cutting process, air blow was performed in the vicinity of the cutting location.
- Table 1 shows the manufacturing conditions of the cutting tool of the comparative example and the cutting tools of Samples 1 to 6 and the test results of this cutting test.
- the cutting tools of Samples 1 to 6 had an average number of edge defects per hole of 10 or less. On the other hand, in the cutting tool according to the comparative example, the average number of edge defects per hole was 30.
- the cutting tool according to the first embodiment, the cutting tool according to the second embodiment, and the cutting tool according to the third embodiment have the second rake face 12 so that the durability of the cutting edge is improved. It has become clear that it is possible to suppress the chipping of the work material.
- Samples 2 to 4 in which the radius of curvature R1 at the tip of the cutting edge 3 is 0.1 ⁇ h1 or less are compared with Samples 1 and 5 to 6 in which the radius of curvature R1 at the tip of the cutting edge 3 is 0.1 ⁇ h1 or more.
- the thickness h1 of the diamond layer 5 covering the flank 2 side of the substrate 4 is in the range of 4 ⁇ m or more and 30 ⁇ m or less, the durability and sharpness of the cutting edge can be made compatible. It became clear.
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Abstract
Description
特許文献1に記載の切削工具においては、切れ刃の耐久性が十分ではなく、加工量が増えていくと切れ刃が損壊し、被削材のコバ欠け(被削材の細かい欠け)が生じる。
[本開示の効果]
上記によれば、切れ刃の耐久性を向上させることができ、被削材のコバ欠けを抑制することができる。
最初に本開示の実施態様を列記して説明する。
以下に、本開示の実施形態の詳細について図を参照して説明する。なお、各図中同一または相当部分には同一符号を付している。また、以下に記載する実施形態の少なくとも一部を任意に組み合わせてもよい。
以下に、第1の実施形態に係る切削工具の構成について説明する。
図5は、第1の実施形態に係る切削工具の製造方法の工程図である。図5に示すように、第1の実施形態に係る切削工具の製造方法は、ダイヤモンド層コーティング工程S1と、ダイヤモンド層除去工程S2とを有する。
上記のとおり、第1の実施形態に係る切削工具は、第2すくい面12を有しており、第2すくい面12と基材4の頂面41とが負角をなしている。その結果、第1の実施形態に係る切削工具の切れ刃3は、単にダイヤモンド層5を基材4上にCVD等により被覆したままの状態よりもシャープとなる。そのため、第1の実施形態に係る切削工具においては、切れ刃3の耐久性が向上し、被削材のコバ欠けを抑制することができる。
以下に、第2の実施形態に係る切削工具の構成について説明する。なお、以下においては、第1の実施形態に係る切削工具と異なる点について主に説明し、同様の説明は繰り返さない。
第2の実施形態に係る切削工具の製造方法は、ダイヤモンド層コーティング工程S1と、ダイヤモンド層除去工程S2とを有し、ダイヤモンド層除去工程S2が、すくい面処理工程S21と、傾斜面処理工程S22とを含んでいる点において、第1の実施形態に係る切削工具の製造方法と同様である。
図4Aに示すように、第1の実施形態に係る切削工具においては、基材4と基材4の逃げ面2側を被覆しているダイヤモンド層5との界面が、露出している。そのため、基材4と基材4の逃げ面2側を被覆しているダイヤモンド層5との界面を起点として、基材4の逃げ面2側を被覆しているダイヤモンド層5の剥離が生じやすい。
以下に、第3の実施形態に係る切削工具の構成について説明する。なお、以下においては、第2の実施形態に係る切削工具の構成と異なる点について主に説明し、同様の説明は繰り返さない。
第3の実施形態に係る切削工具の製造方法は、ダイヤモンド層コーティング工程S1と、ダイヤモンド層除去工程S2とを有し、ダイヤモンド層除去工程S2が、すくい面処理工程S21と、傾斜面処理工程S22とを含んでいる点において、第2の実施形態に係る切削工具の製造方法と同様である。
第3の実施形態に係る切削工具においては、第1すくい面11が、第2すくい面12から遠ざかるにつれて基材4に近づくように傾斜しているため、第1すくい面11が、第2の実施形態に係る切削工具と比較して、より基材4側に凹んでいる。
以下に、第1の実施形態に係る切削工具、第2の実施形態に係る切削工具及び第3の実施形態に係る切削工具を用いた切削試験の結果について説明する。
Claims (9)
- 基材と、
前記基材を被覆しているダイヤモンド層とを備えた切削工具であって、
前記切削工具は、すくい面と、前記すくい面に連なる逃げ面と、前記すくい面と前記逃げ面との稜線により構成される切れ刃とを有し、
前記すくい面は、第1すくい面と、前記第1すくい面と前記逃げ面との間に配置されている第2すくい面とを有し、
前記第2すくい面と前記基材の前記すくい面側の面とがなす角度は、負角であり、
前記第2すくい面は、前記ダイヤモンド層に形成されている、切削工具。 - 前記基材の前記すくい面側の面は前記ダイヤモンド層により被覆されており、
前記第2すくい面は、前記基材の前記逃げ面側の面を被覆している前記ダイヤモンド層と前記基材の前記すくい面側の面を被覆している前記ダイヤモンド層とに跨って形成されている、請求項1に記載の切削工具。 - 前記第1すくい面は、前記第2すくい面から遠ざかるにつれて前記基材に近づくように傾斜している、請求項2に記載の切削工具。
- 前記第2すくい面と前記基材の前記すくい面側の面とがなす角度は、-20°以上0°未満である、請求項1~3のいずれか1項に記載の切削工具。
- 前記基材の前記逃げ面の面側を被覆している前記ダイヤモンド層の厚さは4μm以上30μm以下である、請求項1~4のいずれか1項に記載の切削工具。
- 前記切れ刃の先端の曲率半径は、前記基材の前記逃げ面側の面を被覆している前記ダイヤモンド層の厚さに0.1を乗じた値以下である、請求項1~5のいずれか1項に記載の切削工具。
- 前記ダイヤモンド層は、前記基材と反対側の面においてクラスター状になっている、請求項1~6のいずれか1項に記載の切削工具。
- 前記基材の先端の曲率半径は、前記切れ刃の先端の曲率半径よりも大きい、請求項1~7のいずれか1項に記載の切削工具。
- 前記基材の先端の曲率半径は、0.5μm以上15μm以下である、請求項8に記載の切削工具。
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3563952A1 (de) * | 2018-05-03 | 2019-11-06 | Ceratizit Austria Gesellschaft m.b.H. | Schneidvorrichtung |
US10812050B2 (en) | 2017-07-20 | 2020-10-20 | Murata Manufacturing Co., Ltd. | Multiplexer, radio-frequency (RF) front-end circuit, and communication apparatus |
WO2022138147A1 (ja) * | 2020-12-25 | 2022-06-30 | 京セラ株式会社 | 被覆工具および切削工具 |
US11780018B2 (en) * | 2020-01-10 | 2023-10-10 | Union Tool Co. | Rotary cutting tool |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7038415B2 (ja) * | 2019-03-06 | 2022-03-18 | 国立大学法人東海国立大学機構 | ダイヤモンドコーティング工具 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005103658A (ja) * | 2003-09-26 | 2005-04-21 | Kyocera Corp | スローアウェイチップ |
JP2007307673A (ja) * | 2006-05-19 | 2007-11-29 | Osg Corp | ダイヤモンド被覆切削部材、およびその製造方法 |
JP2008100300A (ja) * | 2006-10-17 | 2008-05-01 | Ngk Spark Plug Co Ltd | ダイヤモンド被覆切削インサート及び切削工具 |
JP2008142890A (ja) * | 2007-12-25 | 2008-06-26 | Kyocera Corp | 切削工具を用いた精密加工方法 |
JP5499771B2 (ja) * | 2010-02-26 | 2014-05-21 | 三菱マテリアル株式会社 | ダイヤモンド被覆切削工具 |
Family Cites Families (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS537513A (en) * | 1976-07-10 | 1978-01-24 | Mitsubishi Metal Corp | Covered hard alloy product |
JPS603921B2 (ja) * | 1979-04-09 | 1985-01-31 | 三菱マテリアル株式会社 | 表面被覆超硬合金製切削工具 |
JPS57184616A (en) * | 1981-05-07 | 1982-11-13 | Nachi Fujikoshi Corp | Drill |
US4751109A (en) * | 1987-01-20 | 1988-06-14 | Gte Laboratories Incorporated | A process for depositing a composite ceramic coating on a hard ceramic substrate |
DE3830525A1 (de) * | 1988-09-08 | 1990-03-22 | Beck August Gmbh Co | Mit hartstoff beschichtete hartmetallschneidplatte und verfahren zu ihrer herstellung |
JP3074815B2 (ja) * | 1991-08-12 | 2000-08-07 | 三菱マテリアル株式会社 | スローアウェイチップ |
US5597272A (en) * | 1994-04-27 | 1997-01-28 | Sumitomo Electric Industries, Ltd. | Coated hard alloy tool |
JPH0899201A (ja) * | 1994-10-03 | 1996-04-16 | Showa Denko Kk | 硬質膜被覆切削工具 |
US5643523A (en) * | 1995-04-18 | 1997-07-01 | Saint-Gobain/Norton Industrial Ceramics Corp. | Method of manufacturing diamond-coated cutting tool inserts |
JP3814051B2 (ja) * | 1996-06-12 | 2006-08-23 | 住友電工ハードメタル株式会社 | 被覆硬質合金工具 |
US6082936A (en) * | 1996-06-12 | 2000-07-04 | Sumitomo Electric Industries, Ltd. | Coated hard metal tool |
US6221469B1 (en) * | 1998-12-09 | 2001-04-24 | Seco Tools Ab | Grade for steel |
JP4891515B2 (ja) * | 2000-07-12 | 2012-03-07 | 住友電工ハードメタル株式会社 | 被覆切削工具 |
DE10048899B4 (de) * | 2000-10-02 | 2004-04-08 | Walter Ag | Schneidplatte mit Verschleißerkennung |
JP2003103405A (ja) | 2001-09-28 | 2003-04-08 | Ngk Spark Plug Co Ltd | 切削工具及びホルダー付き工具 |
JP3913118B2 (ja) * | 2002-06-13 | 2007-05-09 | 忠正 藤村 | 超微粒ダイヤモンド粒子を分散した金属薄膜層、該薄膜層を有する金属材料、及びそれらの製造方法 |
JP4142955B2 (ja) * | 2003-01-14 | 2008-09-03 | 京セラ株式会社 | 表面被覆切削工具 |
JP4446469B2 (ja) * | 2004-03-12 | 2010-04-07 | 住友電工ハードメタル株式会社 | 被覆切削工具 |
SE528427C2 (sv) * | 2004-07-09 | 2006-11-07 | Seco Tools Ab | Ett belagt skär för metallbearbetning och sätt att tillverka detta |
EP1911538B1 (en) * | 2005-07-29 | 2017-08-30 | Sumitomo Electric Hardmetal Corp. | Edge replacing cutting tip and method for producing the same |
EP1938919A4 (en) * | 2005-10-21 | 2012-01-11 | Sumitomo Elec Hardmetal Corp | SMALL PIECE OF TRANCHENT TYPE PIECE OF REPLACEMENT OF A SHARP |
JP2007136631A (ja) * | 2005-11-21 | 2007-06-07 | Sumitomo Electric Hardmetal Corp | 刃先交換型切削チップ |
JP4783153B2 (ja) * | 2006-01-06 | 2011-09-28 | 住友電工ハードメタル株式会社 | 刃先交換型切削チップ |
JP2008023657A (ja) * | 2006-07-21 | 2008-02-07 | Tungaloy Corp | 旋削工具 |
KR101386328B1 (ko) * | 2006-08-31 | 2014-04-17 | 스미또모 덴꼬오 하드메탈 가부시끼가이샤 | 표면피복 절삭공구 |
GB2459272A (en) * | 2008-04-15 | 2009-10-21 | Element Six | Diamond enhanced carbide type materials |
DE102009001675A1 (de) * | 2009-03-19 | 2010-09-23 | Eberhard-Karls-Universität Tübingen | Schneidwerkzeug |
CN102211218B (zh) * | 2011-04-01 | 2013-04-24 | 上海祥仁新材料有限公司 | 金刚石涂层刀具及其在纤维复合材料加工中的应用 |
EP2722121B1 (en) * | 2011-06-17 | 2017-10-11 | Hitachi Tool Engineering, Ltd. | Multi-edge endmill |
KR101787496B1 (ko) * | 2011-07-25 | 2017-10-18 | 쿄세라 코포레이션 | 절삭 공구 |
JP2014046407A (ja) * | 2012-08-31 | 2014-03-17 | Sumitomo Electric Ind Ltd | 切削工具 |
EP2935653B1 (en) * | 2012-12-21 | 2022-06-29 | Sandvik Intellectual Property AB | Coated cutting tool and method for manufacturing the same |
JP5764181B2 (ja) * | 2013-10-31 | 2015-08-12 | ユニオンツール株式会社 | 硬質皮膜被覆切削工具 |
WO2015146507A1 (ja) * | 2014-03-25 | 2015-10-01 | 兼房株式会社 | 切削工具 |
WO2018061355A1 (ja) * | 2016-09-29 | 2018-04-05 | 住友電工ハードメタル株式会社 | 切削工具 |
US11376668B2 (en) * | 2016-09-29 | 2022-07-05 | Sumitomo Electric Hardmetal Corp. | Cutting tool |
US11554421B2 (en) * | 2017-08-22 | 2023-01-17 | Sumitomo Electric Hardmetal Corp. | Cutting tool and method of manufacturing the same |
JP6928248B2 (ja) * | 2017-09-29 | 2021-09-01 | 三菱マテリアル株式会社 | ダイヤモンド被覆回転切削工具 |
-
2017
- 2017-04-27 WO PCT/JP2017/016710 patent/WO2018003272A1/ja active Application Filing
- 2017-04-27 KR KR1020187032209A patent/KR20190022471A/ko active Application Filing
- 2017-04-27 KR KR1020227028957A patent/KR102591346B1/ko active IP Right Grant
- 2017-04-27 EP EP17819639.0A patent/EP3479938A4/en active Pending
- 2017-04-27 JP JP2018524918A patent/JP7046802B2/ja active Active
- 2017-04-27 CN CN201780029585.1A patent/CN109070233B/zh active Active
- 2017-04-27 US US16/305,186 patent/US10882117B2/en active Active
- 2017-05-18 TW TW106116424A patent/TWI750172B/zh active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005103658A (ja) * | 2003-09-26 | 2005-04-21 | Kyocera Corp | スローアウェイチップ |
JP2007307673A (ja) * | 2006-05-19 | 2007-11-29 | Osg Corp | ダイヤモンド被覆切削部材、およびその製造方法 |
JP2008100300A (ja) * | 2006-10-17 | 2008-05-01 | Ngk Spark Plug Co Ltd | ダイヤモンド被覆切削インサート及び切削工具 |
JP2008142890A (ja) * | 2007-12-25 | 2008-06-26 | Kyocera Corp | 切削工具を用いた精密加工方法 |
JP5499771B2 (ja) * | 2010-02-26 | 2014-05-21 | 三菱マテリアル株式会社 | ダイヤモンド被覆切削工具 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10812050B2 (en) | 2017-07-20 | 2020-10-20 | Murata Manufacturing Co., Ltd. | Multiplexer, radio-frequency (RF) front-end circuit, and communication apparatus |
EP3563952A1 (de) * | 2018-05-03 | 2019-11-06 | Ceratizit Austria Gesellschaft m.b.H. | Schneidvorrichtung |
WO2019211031A1 (de) * | 2018-05-03 | 2019-11-07 | Ceratizit Austria Gesellschaft M.B.H. | Schneidvorrichtung |
US11780018B2 (en) * | 2020-01-10 | 2023-10-10 | Union Tool Co. | Rotary cutting tool |
WO2022138147A1 (ja) * | 2020-12-25 | 2022-06-30 | 京セラ株式会社 | 被覆工具および切削工具 |
JP7507887B2 (ja) | 2020-12-25 | 2024-06-28 | 京セラ株式会社 | 被覆工具および切削工具 |
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