WO2022168682A1 - 円盤状刃物及びその製造方法 - Google Patents

円盤状刃物及びその製造方法 Download PDF

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Publication number
WO2022168682A1
WO2022168682A1 PCT/JP2022/002716 JP2022002716W WO2022168682A1 WO 2022168682 A1 WO2022168682 A1 WO 2022168682A1 JP 2022002716 W JP2022002716 W JP 2022002716W WO 2022168682 A1 WO2022168682 A1 WO 2022168682A1
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WIPO (PCT)
Prior art keywords
shaped
disk
angle
base metal
coating layer
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Application number
PCT/JP2022/002716
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English (en)
French (fr)
Japanese (ja)
Inventor
京久 内海
真澄 宮嶋
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富士フイルム株式会社
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Application filed by 富士フイルム株式会社 filed Critical 富士フイルム株式会社
Priority to CN202280010817.XA priority Critical patent/CN116867624A/zh
Priority to JP2022579470A priority patent/JP7707215B2/ja
Publication of WO2022168682A1 publication Critical patent/WO2022168682A1/ja

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D19/00—Shearing machines or shearing devices cutting by rotary discs
    • B23D19/04—Shearing machines or shearing devices cutting by rotary discs having rotary shearing discs arranged in co-operating pairs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
    • B23P15/40—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools shearing tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/36—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades
    • B24B3/46—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades of disc blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
    • B26D1/20—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with a fixed member

Definitions

  • the present disclosure relates to a disk-shaped blade and a manufacturing method thereof.
  • Disk-shaped blades having a coating layer on the surface of a bare metal are disclosed, for example, in FIG. 1 of Japanese Patent Application Laid-Open No. 2012-11475 and FIG.
  • a disk-shaped blade having a coating layer on the surface of a bare metal is required to have a cutting edge without chipping when cutting an object to be cut.
  • the term "disc-shaped blade with no chipping on the cutting edge” refers to a disc-shaped blade with no concave portion having a width of 10 ⁇ m or more on the cutting edge.
  • the problem to be solved by one embodiment of the present disclosure was made in view of the above circumstances, and is to provide a disk-shaped blade that has no chipping on the cutting edge and is easy to manufacture.
  • Another problem to be solved by another embodiment of the present disclosure is to provide a method for manufacturing the disk-shaped blade.
  • Means for solving the above problems include the following embodiments. ⁇ 1> A disk-shaped blade used in a pair with another blade, A disc-shaped base metal having a single-edged tip portion formed by connecting a plane on the side that contacts the other blade and an inclined surface that is inclined with respect to the plane, and covering the plane of the disc-shaped base metal a covering layer that Having a cutting edge composed of the coating layer, Of the two surfaces formed by the coating layer constituting the cutting edge, one surface is inclined at an acute angle with respect to the plane of the disk-shaped base metal, and the other surface is the exposed disk-shaped surface.
  • ⁇ 2> The disc-shaped cutter according to ⁇ 1>, wherein the angle ⁇ and the angle ⁇ satisfy the relationship ⁇ +1° ⁇ +10°.
  • ⁇ 3> The disc-shaped blade according to ⁇ 1> or ⁇ 2>, wherein the angle ⁇ is 10° to 110°.
  • ⁇ 4> The disc-shaped cutlery according to any one of ⁇ 1> to ⁇ 3>, wherein the hardness of the coating layer is 1.5 to 5 times the hardness of the disc-shaped base metal.
  • ⁇ 5> The method for manufacturing a disc-shaped blade according to any one of ⁇ 1> to ⁇ 4>, An object to be ground, comprising a disk-shaped base metal having a tip portion formed including a flat surface on the side that contacts the other blade, and a coating layer covering the entire tip portion of the disk-shaped base metal using Grinding the object to be ground, exposing a portion of the disk-shaped base metal in the object to be ground, forming an inclined surface of the exposed disk-shaped base metal in the disk-shaped cutting tool, and setting the angle ⁇ A first grinding step to adjust; a second grinding step of grinding the object to be ground after the first grinding step, forming a cutting edge composed of the coating layer of the disk-shaped blade, and adjusting the angle ⁇ ; A method for manufacturing a disc-shaped blade.
  • the grinding is performed by up-cutting using a cup-shaped grindstone, and the angle ⁇ formed by the traveling direction of the cup-shaped grindstone and the rotation direction of the object to be ground is 30° to 150°.
  • FIG. 4 is a schematic cross-sectional view showing another example of the tip portion of the disk-shaped cutter according to one embodiment. It is a cross-sectional schematic diagram for demonstrating the 1st grinding process of the manufacturing method of the disk-shaped cutlery which concerns on one Embodiment. It is a cross-sectional schematic diagram for demonstrating the 2nd grinding process of the manufacturing method of the disk-shaped cutlery which concerns on one Embodiment. It is a cross-sectional schematic diagram for demonstrating the 3rd grinding process of the manufacturing method of the disk-shaped cutlery which concerns on one Embodiment. FIG.
  • FIG. 4 is a schematic diagram for explaining an example of grinding applied to the method for manufacturing a disk-shaped blade according to one embodiment; "Advance direction of cup-shaped grindstone”, “Rotational direction of object to be ground”, and “Angle formed by the advancing direction of cup-type grindstone and the rotational direction of object to be ground” in the method for manufacturing a disk-shaped blade according to one embodiment It is a schematic diagram for explaining an angle ⁇ '.
  • FIG. 5 is a schematic diagram showing the positional relationship between the object to be ground and the annular edge portion of the cup-shaped grindstone when performing the first grinding step.
  • FIG. 6 is a schematic diagram showing the positional relationship between the object to be ground and the annular edge portion of the cup-shaped grindstone when performing the second grinding step.
  • a numerical range indicated using “to” means a range including the numerical values before and after “to” as the minimum and maximum values, respectively.
  • upper or lower limits described in a certain numerical range may be replaced with upper or lower limits of other numerical ranges described step by step.
  • upper or lower limits described in a certain numerical range may be replaced with values shown in Examples.
  • the elements in the figures shown in this disclosure are not necessarily to scale, and emphasis is placed on clearly illustrating the principles of the disclosure, and some emphasis is placed on them.
  • a disk-shaped blade according to the present embodiment is a disk-shaped blade that is used in a pair with another blade, and is formed by connecting a plane on the side that contacts the other blade and an inclined surface that is inclined with respect to the plane. and a coating layer covering the plane of the disc-shaped base metal.
  • the two surfaces formed by the coating layer one surface is inclined at an acute angle with respect to the plane of the disk-shaped base metal, and the other surface is the exposed inclined surface of the disk-shaped base metal.
  • the angle ⁇ formed by the flat surface and the inclined surface of the disk-shaped base metal and the angle ⁇ formed by the two surfaces formed by the coating layer constituting the cutting edge are ⁇ satisfies the relation of ⁇ .
  • the disk-shaped blade according to this embodiment is, as described above, a disk-shaped blade used in a pair with another blade (preferably a disk-shaped blade).
  • the "flat surface” of the disc-shaped ingot is the plane on the side that contacts the "other blade” that is used in a pair with the disc-shaped blade according to the present embodiment.
  • the surface of the coating layer contacts the "other blade” (the ventral side It is also called the side of the face, the belly, etc.).
  • the surface of the flat surface of the disk-shaped base metal and the surface of the coating layer that covers the flat surface face the “other blade (specifically, the blade surface of the other blade)”. It is also the surface that is arranged so as to be the surface that
  • the "single-edged tip” may be an acute angle (see, for example, the tip of the disc-shaped ingot 10 shown in FIG. 1 or FIG. 2), and the angle ⁇ can be measured by the method described later. It may be rounded at a level that allows That is, the "single-edged tip” may be chamfered to a level that allows the angle ⁇ to be measured by the method described later.
  • the disk-shaped blade according to the present embodiment is a disk-shaped blade that has no chipping on the cutting edge (hereinafter also simply referred to as "no chipping") and is easy to manufacture.
  • the inclined surface of the disk-shaped base metal is exposed, and this exposed surface is connected to the surface formed by the coating layer that constitutes the cutting edge.
  • the disk-shaped blade according to the present embodiment has an angle ⁇ formed by the plane and the inclined surface of the disk-shaped base metal, an angle ⁇ formed by the two surfaces formed by the coating layer constituting the cutting edge, satisfies the relationship ⁇ . From the viewpoint of a disc-shaped blade that is hard to chip and a sharp cutting edge, it is preferable to satisfy the relationship ⁇ + 1 ° ⁇ ⁇ ⁇ + 10 °, and more preferably satisfy the relationship ⁇ + 2 ° ⁇ ⁇ ⁇ + 8 °. , ⁇ +3° ⁇ +7°.
  • the angles ⁇ and ⁇ are measured as follows.
  • the angle ⁇ is measured from the cutting edge side of the disk-shaped blade using a laser microscope that is a non-contact measurement method or a surface roughness meter that is a contact measurement method. Since the angle ⁇ cannot be measured directly from the disk-shaped blade, it is measured as follows. First, the thickness of the coating layer formed on a plane excluding the cutting edge (for example, the coating layer 20A in FIG. 1 and the coating layer 20B in FIG. 2) is uniform, and the surface and the plane of the coating layer are uniform.
  • the angle ⁇ is the angle at a position 5 ⁇ m away from the cutting edge.
  • the accuracy of the thickness of the coating layer used when obtaining the angle ⁇ is about 0.01 ⁇ m or less in the above measurement area, so the above assumption can be made.
  • a laser microscope for example, VK-9500 manufactured by Keyence Corporation can be used.
  • a surface roughness meter SURFCOM FLEX-50A manufactured by Tokyo Seimitsu Co., Ltd. can be used.
  • Both the disk-shaped blades described in JP-A-2012-11475 and JP-A-2016-190497 are scribing wheels.
  • the scribing wheel does not use other blades to cut the material to be cut. Therefore, the disk-shaped base metal in the disk-shaped blades described in JP-A-2012-11475 and JP-A-2016-190497 does not have a flat surface on the side that contacts other blades, and the disk according to the present embodiment It is different from the shape knife.
  • the disc-shaped blades described in JP-A-2012-11475 and JP-A-2016-190497 have no region where the disc-shaped base metal is exposed, and in this respect also, the disc-shaped blade according to the present embodiment is different.
  • a disk-shaped blade according to this embodiment will be described below.
  • FIG. 1 and 2 used here are schematic cross-sectional views for explaining the layer configuration and shape of the disk-shaped blade according to this embodiment.
  • the tip of the disc-shaped blade 100A includes a disc-shaped base metal 10 having a single-edged tip formed of a plane 12 and an inclined plane 14 inclined with respect to the plane 12, and a disc-shaped It has a coating layer 20A that covers the plane 12 of the ingot 10 .
  • a cutting edge 30A is formed by the coating layer 20A.
  • one surface 22A is inclined at an acute angle with respect to the plane 12 of the disk-shaped base metal 10, and the other surface 22A
  • the surface 24A is connected to the exposed inclined surface 14 of the disc-shaped ingot 10 .
  • FIG. 1 the tip of the disc-shaped blade 100A includes a disc-shaped base metal 10 having a single-edged tip formed of a plane 12 and an inclined plane 14 inclined with respect to the plane 12, and a disc-shaped It has a coating layer 20A that covers the plane 12 of the ingot 10 .
  • a cutting edge 30A is formed by the coating layer 20A.
  • one surface 22A is inclined at an acute angle with respect to the plane 12 of
  • the surface 24A formed by the coating layer 20A and the exposed inclined surface 14 of the disk-shaped base metal 10 form the same plane. That is, the angle formed by the surface 24A and the inclined surface 14 is 180°. Further, as shown in FIG. 1, two surfaces 22A and 24A formed by the angle ⁇ formed by the flat surface 12 and the inclined surface 14 of the disc-shaped ingot 10 and the coating layer 20A constituting the cutting edge 30A. The angle ⁇ of the formed angle satisfies the relationship ⁇ .
  • one of the two surfaces formed by the coating layer that constitutes the cutting edge is inclined at an acute angle with respect to the plane of the disk-shaped bare metal
  • the surface 22A formed by the coating layer is inclined with respect to the plane 12 of the disc-shaped base metal 10 so as to form an acute angle toward the cutting edge 30A. Therefore, the angle formed by the intersection of the extension of the plane 12 and the surface 22A is an acute angle.
  • ⁇ is an angle formed by the plane 12 and the inclined plane 14 inclined with respect to the plane 12, and The apex angle at the tip is shown.
  • " ⁇ " is the angle between the two surfaces 22A and 24A formed by the coating layer 20A that constitutes the cutting edge 30A, as shown in FIG. shows the included angle of the cut edge.
  • the tip of the disc-shaped blade 100B has a disc-shaped base metal 10 having a single-edged tip formed by a flat surface 12 and an inclined surface 14 inclined with respect to the plane 12, and It has a coating layer 20B that covers the flat surface 12 of the disk-shaped ingot 10 .
  • a cutting edge 30B is formed by the coating layer 20B.
  • one surface 22B is inclined at an acute angle with respect to the plane 12 of the disk-shaped base metal 10, and the other surface 22B The surface 24B is connected to the exposed inclined surface 14 of the disk-shaped ingot 10 .
  • FIG. 2 unlike FIG.
  • the surface 24B formed by the coating layer 20B and the exposed inclined surface 14 of the disk-shaped ingot 10 do not form the same plane.
  • the angle (specifically, the internal angle) formed by the surface 24B and the inclined surface 14 is less than 180°.
  • two surfaces 22B formed by the angle ⁇ formed by the flat surface 12 of the disk-shaped base metal 10 and the inclined surface 14 and the coating layer 20B constituting the cutting edge 30B and 24B satisfy the relationship ⁇ .
  • the angle (that is, internal angle) formed by the surface 24B and the inclined surface 14 is preferably 120° to 150°, for example.
  • the disk-shaped base metal that constitutes the disk-shaped blade according to the present embodiment is not particularly limited as long as it is a disk-shaped base metal that has a single-edged tip formed by a plane and an inclined surface that is inclined with respect to the plane. do not have.
  • Examples of the material of the disk-shaped base metal include metals and metal compounds.
  • the material of the disk-shaped base metal includes high-speed tool steel (also called high-speed steel), alloy tool steel, cemented carbide, ceramics, and the like.
  • the size of the disc-shaped ingot is not particularly limited, but may be determined according to the application, the type of the material to be cut, the space allowed in the facility, and the like.
  • the outer diameter of the disk-shaped base metal is, for example, 30 mm to 300 mm, and preferably 80 mm to 160 mm from the viewpoint of ease of replacement work of the disk-shaped cutting tool, handleability during regrinding, and the like.
  • the inner diameter ie, the diameter of the through hole
  • the inner diameter of the through hole is, for example, 20 mm to 200 mm.
  • the thickness of the disk-shaped base metal specifically, the thickness of the region excluding the tip of the single-edged blade is, for example, 0.3 mm from the viewpoint of the strength, dimensional accuracy, weight suitable for work, etc. of the disk-shaped blade. ⁇ 3 mm.
  • the angle ⁇ between the flat surface and the inclined surface that is inclined with respect to the flat surface is determined according to the type of material to be cut, ease of manufacture, difficulty in generating dust from the cut surface, etc. Just do it.
  • the angle ⁇ include 10° to 110°, preferably 20° to 100°, more preferably 30° to 95°.
  • the coating layer constituting the disc-shaped blade according to the present embodiment is not particularly limited as long as it is a coating layer having a higher degree than the disc-shaped base metal.
  • Materials for the coating layer include diamond-like carbon (DLC), titanium nitride (TiN), titanium carbonitride (TiCN), and aluminum chromium nitride (AlCrN).
  • the hardness of the coating layer is preferably 1.2 to 8 times the hardness of the disk-shaped base metal from the viewpoint of improving the cutting ability and obtaining a chip-free disk-shaped blade. It is more preferably 5-fold to 5-fold, and even more preferably 2-fold to 5-fold.
  • the hardness of the coating layer and the disk-shaped base metal is measured by the following method.
  • the hardness of the coating layer and the disk-shaped base metal is indicated by Vickers hardness.
  • the Vickers hardness of the coating layer and the disk-shaped base metal is measured by the method described in JIS Z 2244:2009. Specifically, the Vickers hardness of the coating layer and the disk-shaped base metal is measured using, for example, a Vickers hardness tester HV-100 manufactured by Mitutoyo Corporation.
  • PVD physical vapor deposition
  • sputtering vacuum deposition
  • ion beam deposition molecular beam deposition
  • ion plating chemical vapor deposition
  • the thickness of the coating layer formed on the flat surface of the disk-shaped base metal is preferably 0.5 ⁇ m to 10 ⁇ m, more preferably 1 ⁇ m to 6 ⁇ m.
  • the thickness of the coating layer is measured by the following method.
  • a disk-shaped base metal to be coated with a coating layer and a partially masked measurement sample (specifically, a measurement sample made of the same material as the disk-shaped base metal) are placed in the same device.
  • a coating layer is formed on both the disk-shaped ingot and the sample for measurement. After that, in the measurement sample on which the coating layer is formed, the difference in level caused by masking or not is measured as the thickness of the coating layer using a laser microscope or a stylus type roughness meter.
  • the thickness of the above-mentioned coating layer is obtained by removing a part of the coating layer by laser processing, grinding, etc., exposing the disk-shaped base metal, and the step between the exposed disk-shaped base metal and the remaining coating layer. can also be measured with a laser microscope or a scanning electron microscope (SEM) as the thickness of the coating layer.
  • the method for manufacturing a disk-shaped blade according to this embodiment is the method for manufacturing a disk-shaped blade according to the above-described embodiment, and is used in a pair with the other blade (that is, the disk-shaped blade according to this embodiment).
  • an object to be ground comprising a disk-shaped base metal having a tip portion formed including a flat surface on the side that comes into contact with another blade), and a coating layer covering the entire tip portion of the disk-shaped base metal using Grinding the object to be ground, exposing a portion of the disk-shaped base metal in the object to be ground, forming an inclined surface of the exposed disk-shaped base metal in the disk-shaped cutting tool, and setting the angle ⁇
  • a method for manufacturing a disk-shaped blade according to this embodiment will be described below with reference to the drawings.
  • a ground object 110a including 52, 54 is prepared.
  • the object 110a to be ground is ground from the inclined surface side of the disk-shaped bare metal 40 (first grinding step). That is, in the first grinding step, the coating layer 54 is ground from the inclined surface side of the disk-shaped base metal 40 to expose a portion of the disk-shaped base metal 40 .
  • first grinding step the coating layer 54 is ground from the inclined surface side of the disk-shaped base metal 40 to expose a portion of the disk-shaped base metal 40 .
  • the grinding in the first grinding step is performed on the workpiece 110a to be ground in the direction of the arrow. It is possible to adjust the angle ⁇ while forming the “exposed inclined surface of the disk-shaped ingot” in .
  • the object to be ground 110b in which the inclined surface of the disk-shaped ingot 40 is exposed is obtained.
  • the object to be ground 110b after the first grinding step is ground from the plane side of the disk-shaped ingot 40 (second grinding step). That is, in the second grinding step, the coating layer 52 is ground from the plane side of the disk-shaped base metal 40 to determine the shape of the cutting edge.
  • the grinding in the second grinding step is performed on the workpiece 110b to be ground in the direction of the arrow. It is possible to adjust the angle ⁇ while forming the “cutting edge composed of the coating layer” in .
  • the shape of the blade edge of the object 110b to be ground is adjusted, the angle ⁇ is adjusted, and the disk-shaped blade 100A according to this embodiment as shown in FIG. 1 is obtained.
  • the coating layer of the object to be ground may be ground to adjust the angle ⁇ (third grinding step).
  • the third grinding process is preferably performed after the first grinding process and before the second grinding process.
  • the coating layer 52 of the object to be ground 110b after the first grinding process is ground (an example of the third grinding process). That is, according to an example of the third grinding step, the coating layer 52 of the object to be ground 110b can be ground to adjust the shape of the cutting edge.
  • the grinding in the third grinding step is performed on the object 110c to be ground in the direction of the arrow, and by this grinding, the shape of the "cutting edge composed of the coating layer" is obtained. can be adjusted and the angle ⁇ can be adjusted.
  • FIG. 5 shows an example in which the third grinding process is performed on the object to be ground 110c obtained by performing the first grinding process and after the second grinding process in this order.
  • the object 110b to be ground may be ground in the direction of the arrow, as in FIG.
  • the disc-shaped blade manufacturing method according to the present embodiment may obtain the disc-shaped blade 100B according to the present embodiment as shown in FIG. 2 by including the third grinding step.
  • the object to be ground includes a disk-shaped base metal having a tip formed with a flat surface, and a coating layer covering the entire tip of the disk-shaped base metal.
  • the object to be ground may be any object that can be ground into the disk-shaped blade according to the present embodiment.
  • the disk-shaped base metal in the object to be ground is the same as the disk-shaped base metal in the disk-shaped cutting tool according to the present embodiment.
  • the angle ⁇ is adjusted in the first grinding step, the apex angle is not particularly limited as long as the tip of the disk-shaped bare metal in the object to be ground is formed including a plane, and the angle It may be larger than ⁇ .
  • the coating layer of the object to be ground is made of the same material as the coating layer of the disc-shaped blade according to the present embodiment.
  • the coating layer on the object to be ground is thicker than the coating layer on the disc-shaped blade according to the present embodiment. is desirable.
  • grinding is preferably performed using a cup-shaped grindstone from the viewpoint of manufacturing a disk-shaped blade without chipping and from the viewpoint of performing precise grinding.
  • the cup-shaped grindstone is a cup-shaped grindstone whose opening is formed by an annular edge, and the widthwise central portion of the annular edge (also simply referred to as "annular portion") is Functions as a grindstone.
  • grinding using a cup-shaped grindstone for example, as shown in FIG. Grinding is performed by applying a cup-shaped grindstone 130 rotating in the direction of the arrow y to the surface.
  • up-cut grinding using a cup-shaped grindstone refers to grinding in which the cup-shaped grindstone advances from the outside of the object to be ground toward the cutting edge. The details of the up-cut grinding using the cup-shaped grindstone will be described in the description of the first grinding process using FIG. 8 and the description of the second grinding process using FIG. 9 .
  • FIG. 7 is a schematic diagram showing the positional relationship between the object to be ground and the annular edge of the cup-shaped grindstone when the object is ground by the cup-shaped grindstone. Further, FIG.
  • FIG. 7 is a schematic diagram viewed from the side of the object to be ground from a position where the rotation direction of the cup-shaped grindstone (that is, the rotation direction of the annular edge of the cup-shaped grindstone) can be seen. .
  • the rotation direction of the cup-shaped grindstone that is, the rotation direction of the annular edge of the cup-shaped grindstone
  • FIG. 7 along the rotational direction of the annular edge 132 of the cup-shaped grindstone passing through the contact points p1 and p2 between both ends of the object 110 in the thickness direction and the annular edge 132 of the cup-shaped grindstone.
  • the arrow y1 pointing in this direction is the above-mentioned "advancing direction of the cup-shaped grindstone". Further, in FIG.
  • the direction of arrow x1 which is the direction of rotation of the object to be ground 110 at the contact points p1 and p2, is defined as the "rotation direction of the object to be ground”. Therefore, the angle ⁇ between the direction of the arrow x1 and the direction of the arrow y1 shown in FIG. Become.
  • the above angle ⁇ is preferably 30° to 150°, more preferably 30° to 90°, from the viewpoint of manufacturing a chip-free disk-shaped blade.
  • the angle .theta. can be adjusted by adjusting the installation position of the cup-shaped grindstone and the installation position of the object to be ground.
  • FIG. 8 is a schematic diagram showing the positional relationship between the object to be ground and the annular edge portion of the cup-shaped grindstone when performing the first grinding step.
  • grinding in the first grinding step involves rotating an object to be ground 110a having the configuration and shape as shown in FIG. This is preferably done by rotating the edge 132 in the direction of the arrow y.
  • the coating layer 54 of the object to be ground 110a is ground by up-cutting in the first grinding step.
  • the grinding of the object 110a to be ground which is performed by up-cutting shown in FIG. It is preferably done below.
  • FIG. 9 is a schematic diagram showing the positional relationship between the object to be ground and the annular edge of the cup-shaped grindstone when performing the second grinding step.
  • the grinding in the second grinding step involves rotating an object to be ground 110b having the configuration and shape as shown in FIG. This is preferably done by rotating the edge 132 in the direction of the arrow y.
  • the object 110b to be ground in the direction of the arrow x and rotating the annular edge portion 132 of the cup-shaped grindstone in the direction of the arrow y shown in FIG. Grinding is performed in which the cup-shaped grindstone advances. 9, the coating layer 52 of the object 110b to be ground is ground by up-cutting.
  • the grinding of the object 110b to be ground which is performed by up-cutting shown in FIG. It is preferably done below.
  • cup-shaped grindstone that can be used in the method for manufacturing a disc-shaped blade according to this embodiment is not particularly limited as long as the first grinding step and the second grinding step are possible.
  • the cup-shaped grindstone used in the first grinding step since the amount of grinding is large, it is possible to use one with an abrasive grain size of 2 ⁇ m to 80 ⁇ m (preferably 3 ⁇ m to 30 ⁇ m, more preferably 5 ⁇ m to 10 ⁇ m). preferable. Further, the abrasive grains of the cup-shaped grindstone used in the first grinding step may be determined according to the material of the object to be ground, and examples thereof include diamond, cubic boron nitride, and the like. Furthermore, the width of the annular edge of the cup-shaped grindstone used in the first grinding step is preferably 0.5 mm to 20 mm (preferably 5 mm to 10 mm).
  • the abrasive grain size is 0.5 ⁇ m to 10 ⁇ m (preferably 0.75 ⁇ m to 8 ⁇ m, more preferably 1 ⁇ m to 3 ⁇ m). It is preferable to use a material. Further, the abrasive grains of the cup-shaped grindstone used in the second grinding step may be determined according to the material of the object to be ground, and examples thereof include diamond, cubic boron nitride, and the like. Furthermore, the width of the annular edge of the cup-shaped grindstone used in the second grinding step is preferably 2 mm to 15 mm (preferably 5 mm to 10 mm).
  • Grinding conditions in the first grinding process, the second grinding process, and the third grinding process are not particularly limited as long as the intended grinding is performed and the desired angles ⁇ and ⁇ can be obtained.
  • the desired angles ⁇ and ⁇ the type of cup-shaped grindstone, the peripheral speed of the cup-shaped grindstone, the peripheral speed of the object to be ground, the amount of cutting, the grinding time, the amount of grinding, the number of times of cutting, etc. can be adjusted as appropriate. good.
  • the peripheral speed of the cup-shaped grindstone, the peripheral speed of the object to be ground, the depth of cut, the grinding time, the amount of grinding, and the number of times of cutting may be selected within the following ranges, for example: ⁇ Peripheral speed of cup-shaped grindstone: 200 m/min to 2000 m/min ⁇ Peripheral speed of object to be ground: 10 m/min to 500 m/min ⁇ Amount of cut: 0.5 ⁇ m/time to 5 ⁇ m/time ⁇ Grinding time: 1 s to 60 s ⁇ Amount of grinding (amount to be ground): 1 ⁇ m to 100 ⁇ m ⁇ Number of incisions: Amount to be ground / Amount of incision
  • grinding device As a grinding device applied to the method for manufacturing a disk-shaped cutlery according to the present embodiment, a device capable of performing the first grinding step, the second grinding step, and the third grinding step (for example, a , a rotating shaft, driving means for rotating it, driving means for rotating the cup-shaped grindstone, moving means for moving the cup-shaped grindstone, means for moving the object to be ground, means for applying grinding liquid to the grinding part, etc.
  • a device capable of performing the first grinding step, the second grinding step, and the third grinding step
  • driving means for rotating it driving means for rotating the cup-shaped grindstone
  • moving means for moving the cup-shaped grindstone means for moving the object to be ground
  • means for applying grinding liquid to the grinding part etc.
  • the disk-shaped blade according to this embodiment can be used in combination with other blades to cut an object to be cut.
  • the disk-shaped blade according to this embodiment and the other blade are arranged so that their blade surfaces (that is, the side surfaces of the blade edges) face each other and are in sliding contact with each other, thereby cutting the object to be cut. is done.
  • Another blade to be combined (that is, another blade used in a pair with the disk-shaped blade according to the present embodiment) is a disk-shaped blade that is combined with the disk-shaped blade according to the present embodiment to cut the object to be cut. There is no particular limitation as long as it can be cut.
  • a disk-shaped cutting tool made of cemented carbide and having a deflection accuracy of about 50 ⁇ m or less on the outer circumference and side surface during rotation is preferable. Also, the cutting edges of other blades may be chamfered. Note that the disk-shaped blade according to the present embodiment may be used as another blade.
  • the disk-shaped blade according to this embodiment be used for slitting as a pair with another blade.
  • the disk-shaped cutter according to the present embodiment is preferably a disk-shaped cutter applied to a Goebel type slitter or a gang type slitter.
  • the disk-shaped cutter according to this embodiment may be applied only to the upper blade or only to the lower blade. It may be applied to both blades.
  • the method and apparatus for cutting an object using a combination of a disk-shaped blade and other blades according to the present embodiment include, for example, the method and apparatus for cutting an object described in Japanese Unexamined Patent Application Publication No. 2001-315089.
  • the device or the like can be applied.
  • An object to be ground 110a as shown in FIG. 3 was prepared. Specifically, a cemented carbide (FW35, manufactured by Kyocera Corporation, hardness: A 3 ⁇ m-thick TiCN (hardness: 3500 HV) was formed on the entire surface of a disk-shaped ingot made of 1550 HV) by physical vapor deposition. This was used as an object to be ground.
  • a cemented carbide FW35, manufactured by Kyocera Corporation, hardness: A 3 ⁇ m-thick TiCN (hardness: 3500 HV) was formed on the entire surface of a disk-shaped ingot made of 1550 HV) by physical vapor deposition. This was used as an object to be ground.
  • Example 1 ⁇ First Grinding Process> As shown in FIG. 8, a #1000 cup-shaped grindstone (diameter ⁇ 100mm) is used for the object to be ground having a diameter of ⁇ 100mm, and the contact angle of the cup-shaped grindstone (i.e., The first grinding step was performed by adjusting the angle of the rotating shaft of the cup-shaped grindstone. At this time, the grinding was performed by up-cutting, and the other grinding conditions were as follows.
  • ⁇ Peripheral speed of cup-shaped grindstone 1200m/min
  • ⁇ Peripheral speed of object to be ground 100m/min
  • ⁇ Amount of cut 2 ⁇ m/time
  • ⁇ Grinding time 20 seconds
  • Angle ⁇ of the angle formed with the direction of rotation 75°
  • a portion of the disk-shaped base metal in the object to be ground was exposed to form an inclined surface of the disk-shaped base metal, and the angle ⁇ was set to 30°.
  • ⁇ Peripheral speed of cup-shaped grindstone 100 m/min
  • ⁇ Peripheral speed of object to be ground 100 m/min
  • ⁇ Amount of cut 0.5 ⁇ m
  • ⁇ Grinding time 2 seconds x 3 times ⁇ Angle ⁇ formed by the advancing direction of the cup-shaped grindstone and the rotating direction of the object to be ground: 75°
  • Example 2 In the second grinding step, in the same manner as in Example 1, except that the angle of contact of the cup-shaped grindstone with respect to the object to be ground (that is, the angle of the rotation axis of the cup-shaped grindstone) was adjusted. was 30° and ⁇ was 32°.
  • Examples 3 to 7 In the first grinding step and the second grinding step, the contact angle of the cup-shaped grindstone with respect to the object to be ground (that is, the angle of the rotation axis of the cup-shaped grindstone) was adjusted. In the same manner as in No. 1, a disk-shaped blade having a cutting edge made of TiCN and having the values of ⁇ and ⁇ shown in Table 1 was obtained.
  • Example 8 After the first grinding step so that the angle ⁇ becomes 30°, the following third grinding step is performed, and then the contact angle of the cup-shaped grindstone so that the angle ⁇ becomes 38° (that is, the cup-shaped grindstone In the same manner as in Example 1 except that the angle of the rotating shaft was adjusted and the second grinding step was performed, a disk-shaped blade having a TiCN cutting edge with ⁇ of 30° and ⁇ of 38° was obtained. .
  • a #6000 cup-shaped grindstone (diameter ⁇ 100 mm) is used on the workpiece after the first grinding step, and the cup is adjusted so that the angle ⁇ is 35°.
  • a cutting test was conducted by combining the disk-shaped blade obtained in the example and the lower blade described below.
  • a PET film (Cosmoshine (registered trademark) A4300, manufactured by Toyobo Co., Ltd.) having a thickness of 50 ⁇ m was used as the material to be cut.
  • the disk-shaped blade obtained in the example was used as an upper blade, and this was combined with the above lower blade to continue cutting the object to be cut up to 10,000 m.
  • the upper blade and the lower blade were arranged so that the coating layers of the cutting edges were in sliding contact with each other, and the meshing amount was 0.8 mm. After that, the presence or absence of chipping of the cutting edge of the disk-shaped cutter was performed in the same manner as in the above-mentioned "evaluation of chipping".

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
PCT/JP2022/002716 2021-02-08 2022-01-25 円盤状刃物及びその製造方法 WO2022168682A1 (ja)

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JP2015009350A (ja) * 2013-07-02 2015-01-19 株式会社Ihi 回転刃及びスリッター
JP2018164970A (ja) * 2017-03-28 2018-10-25 トヨタ自動車株式会社 切断装置および回転刃

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JPH01321196A (ja) * 1988-06-17 1989-12-27 Mitsubishi Metal Corp 丸刃工具およびその製造方法
JP2007257695A (ja) * 2006-03-20 2007-10-04 Fujifilm Corp 磁気テープの製造方法及び装置
JP2014037011A (ja) * 2012-08-10 2014-02-27 Kanefusa Corp スリッターナイフ
JP2015009350A (ja) * 2013-07-02 2015-01-19 株式会社Ihi 回転刃及びスリッター
JP2018164970A (ja) * 2017-03-28 2018-10-25 トヨタ自動車株式会社 切断装置および回転刃

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