WO2014155890A1 - ｃＢＮ切削工具の製造方法およびｃＢＮ切削工具 - Google Patents

ｃＢＮ切削工具の製造方法およびｃＢＮ切削工具 Download PDF

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Publication number
WO2014155890A1
WO2014155890A1 PCT/JP2013/085028 JP2013085028W WO2014155890A1 WO 2014155890 A1 WO2014155890 A1 WO 2014155890A1 JP 2013085028 W JP2013085028 W JP 2013085028W WO 2014155890 A1 WO2014155890 A1 WO 2014155890A1
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WO
WIPO (PCT)
Prior art keywords
cbn
base metal
cutting tool
rake face
grinding
Prior art date
Application number
PCT/JP2013/085028
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English (en)
French (fr)
Japanese (ja)
Inventor
直樹 渡部
克己 岡村
廣樹 米倉
陽介 興梠
Original Assignee
住友電工ハードメタル株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 住友電工ハードメタル株式会社 filed Critical 住友電工ハードメタル株式会社
Priority to KR1020157001647A priority Critical patent/KR20150135185A/ko
Priority to MX2015001814A priority patent/MX2015001814A/es
Priority to IN581DEN2015 priority patent/IN2015DN00581A/en
Priority to EP13880617.9A priority patent/EP2979812B1/en
Priority to CN201380040327.5A priority patent/CN104520067B/zh
Priority to US14/415,496 priority patent/US10160083B2/en
Priority to CA2879607A priority patent/CA2879607A1/en
Publication of WO2014155890A1 publication Critical patent/WO2014155890A1/ja

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Classifications

    • 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
    • B24B3/34—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of turning or planing tools or tool bits, e.g. gear cutters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
    • B23B27/141—Specially shaped plate-like cutting inserts, i.e. length greater or equal to width, width greater than or equal to thickness
    • B23B27/145—Specially shaped plate-like cutting inserts, i.e. length greater or equal to width, width greater than or equal to thickness characterised by having a special shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
    • B23B27/18—Cutting tools of which the bits or tips or cutting inserts are of special material with cutting bits or tips or cutting inserts rigidly mounted, e.g. by brazing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/04—Overall shape
    • B23B2200/0447—Parallelogram
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/04—Overall shape
    • B23B2200/049—Triangular
    • 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
    • B23B2200/085—Rake or top surfaces discontinuous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/24—Cross section of the cutting edge
    • B23B2200/242—Cross section of the cutting edge bevelled or chamfered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/28—Angles
    • B23B2200/283—Negative cutting angles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2222/00—Materials of tools or workpieces composed of metals, alloys or metal matrices
    • B23B2222/28—Details of hard metal, i.e. cemented carbide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2226/00—Materials of tools or workpieces not comprising a metal
    • B23B2226/12—Boron nitride
    • B23B2226/125—Boron nitride cubic [CBN]
    • 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

Definitions

  • the present invention provides a cBN cutting tool manufacturing method and a cBN cutting tool in which a small piece of a cBN (cubic boron nitride) sintered body is provided at a corner portion of a base metal, and a cutting edge is formed on the cBN sintered body.
  • the present invention relates to a manufacturing method and a cBN cutting tool that are devised for finishing grinding.
  • One cutting tool is provided by joining a small piece of cBN sintered body to the corner of a polygonal base metal made of cemented carbide, ceramics, cermet, sintered alloy, etc.
  • a cBN cutting tool composed of a cBN sintered body.
  • the upper surface of the base metal and the rake surface formed on the cBN sintered body are finished flush with each other.
  • cutting edge processing suitable for each is required.
  • sharpness those with only sharp edges and honing treatment are used.
  • the strength is required, the cBN sintered body is hard and brittle. Therefore, a method of strengthening the cutting edge by attaching a negative land to the cutting edge formed on the cBN sintered body is frequently used.
  • the grinding of the rake face is performed by mounting a large number of cutting tools on a surface grinder and grinding with a single grindstone.
  • the base metal and the cBN sintered body provided at the corner portion of the base metal are ground together (so-called co-machining), so that the upper surface of the base metal and the rake face of the cBN sintered body are flush with each other. ing.
  • a method is conceivable in which only the rake face of the base metal is ground and finished, then a cBN blank is brazed, and only the flank face is co-ground.
  • Patent Document 1 a cBN cutting tool in which the upper surface of the base metal and the rake face of the cBN sintered body are flush with each other is disclosed in, for example, Patent Document 1 below. It is also described in catalogs disclosed on the Internet by tool manufacturers (for example, Sumitomo Electric Hardmetal, Tungaloy, Mitsubishi Materials, Sandvik, etc.).
  • the true center height of a general turning tool (tool processing point) varies depending on the thickness tolerance of the tool body ( ⁇ 25 ⁇ m in the strictest case). Further, in a turning tool in which a negative land is provided at the cutting edge, the variation increases depending on the inclination angle, width, and processing accuracy of the negative land.
  • a cBN cutting tool used for finishing is required to reduce the inclination angle of the negative land and to reduce the width of the negative land with emphasis on sharpness. Further, when sharpness is necessary, cutting edge processing with only sharp edges and honing without a negative land is required.
  • the conventional cBN cutting tool made by co-cutting the rake face of the cBN sintered body and the upper surface of the base metal is affected by the sag of the rake face.
  • the variation is ⁇ 25 ⁇ m when the negative land inclination angle is 15 °, for example, and ⁇ 40 ⁇ m when the negative land inclination angle is 10 °.
  • the width and height of the negative land must be larger than the accuracy error range during grinding. For this reason, the negative land has become larger than necessary, and it has been difficult to reduce the inclination angle of the negative land, and the sharpness has been affected.
  • the negative land size may be increased depending on the application.
  • the flank is ground after the rake face of the cBN sintered body and the upper surface of the base metal are co-machined, chipping of the blade edge may occur during machining of the flank. Therefore, it was necessary to remove the chipping by increasing the size of the negative land.
  • the present invention can greatly increase the accuracy of the core height of a cBN cutting tool in which a cBN sintered body is provided at the corner of the base metal, and can increase the degree of freedom of blade edge processing (the inclination angle and width of the negative land are also increased).
  • the challenge is to make it sufficiently small.
  • the present invention provides the following manufacturing method.
  • the manufacturing method is such that the base metal of the cBN cutting tool is held at the corner of the base metal at the end face of the grindstone of the grinder while holding and holding the base metal of the cBN cutting tool in the thickness direction with a chuck of the grinding machine capable of controlling the position and orientation.
  • the cBN sintered body being pressed is pressed to grind the flank and rake face formed in the cBN sintered body.
  • the grinding is performed so that the substantial grinding object is the cBN sintered body. Further, in the grinding of the rake face, the rake face of the cBN sintered body is dropped from the upper surface (base metal rake face) of the base metal, or only the cBN sintered body protruding from the base metal rake face is ground. Then, the above operation is carried out without adjusting the holding state of the tool by the chuck by adjusting the posture and position of the chuck.
  • the expression “substantially subject to grinding is the cBN sintered body” means that the grinding region of the rake face has a sufficiently small width that does not have the adverse effects of co-machining and is easy to obtain flatness. It doesn't matter if it falls on a part of the base metal. A part of the base metal to be ground in such a situation is not considered as a grinding region. Used in that sense.
  • the cBN cutting tool of the present invention is a cBN cutting tool comprising a cBN sintered body having a flank face and a rake face at a corner portion of a cemented carbide base metal, the flank face being a polishing bar perpendicular to the tool thickness direction.
  • the rake face has a polishing bar that is nearly perpendicular to the bisector of the corner provided with the cBN sintered body of the tool, and the rake face falls from the upper surface of the base metal to the upper surface of the base metal. There is a step between them.
  • flank and rake surfaces are ground with a single chuck, so there is no misalignment caused by changing tools. Further, since the rake surface is ground so that the substantial grinding object is the cBN sintered body, the sagging of the processed surface when the base metal is co-machined does not occur. Flatness is likely to occur because the processing area is small.
  • FIG. 1A It is a perspective view which shows an example of the cBN cutting tool ground by the method of this invention. It is a perspective view which shows the figure after grinding of the cBN cutting tool of FIG. 1A. It is a perspective view which shows the other example of the cBN cutting tool ground by the method of this invention. It is a perspective view which shows the figure after grinding of the cBN cutting tool of FIG. 2A. It is a top view which shows the principal part of an example of the grinding machine utilized for implementation of the method of this invention. It is a front view which shows the motion of the chuck
  • FIGS. 1A and 2A An example of a cBN cutting tool to be ground is shown in FIGS. 1A and 2A.
  • the cBN cutting tool 1 of FIG. 1A is a rhombus cutting insert in which a small piece of a cBN sintered body 3 is joined to an acute corner portion of an upper surface 2a of a base metal 2 made of carbide base metal. Some of these rhombus cutting inserts are provided with small pieces of the cBN sintered body 3 at acute corner portions at two diagonal positions.
  • the cBN cutting tool 1 in FIG. 2A is a triangular cutting insert in which small pieces of the cBN sintered body 3 are joined to each corner portion of the upper surface 2a of a base metal 2 made of carbide base metal.
  • Cutting insert with cBN sintered body in only one corner, cutting insert with a shape different from the example shape (diamonds with different corner angles or polygons with 4 or more corners), or negative type base metal A material obtained by bonding a cBN sintered body to the corner portions of the upper and lower surfaces is also an object to be processed by the method of the present invention.
  • the cBN sintered body 3 has a joint surface 3a perpendicular to the bisector CL of the corner where the cBN sintered body 3 of the cBN cutting tool 1 is provided, and the cutting back partial pressure at the joint surface 3a. It is intended to receive.
  • the cBN sintered body 3 and the cemented carbide base metal 2 may be anything that can be used as a cutting tool, and the content of cBN or tungsten is not particularly limited.
  • an NC grinder is used for grinding.
  • the grinder to be used has a chuck 11 as shown in FIG. 3 in which numerical control of the position and orientation is performed, and a grindstone 12 that rotates at a fixed position.
  • the work (cBN cutting tool) is carried into and out of the grinding machine, and the work is transferred to the chuck 11 using a robot hand (not shown) whose position is controlled.
  • the illustrated grindstone 12 is a cup grindstone, grinding with a disc-shaped grindstone is also possible.
  • a fine one having a fineness of # 600 or more is suitable.
  • the grinding machine used for the evaluation of the method of the present invention is the four-axis control shown in FIGS. 4 and 5, that is, the chuck movement in the X-axis and Y-axis directions, the rotation around the axis O of the chuck 11 and the figure. 5 has each function of b-axis direction rotation (does not move in the Z-axis direction). Grinding by the manufacturing method of the present invention could be carried out without any problem with the grinding machine having the 4-axis control function.
  • the scissors chuck 11 has plug gauges 11a and 11a capable of exchanging a pair of opposed sizes. Using a plug gauge suitable for the model number of the cBN cutting tool to be processed, the cBN cutting tool 1 carried into the fixed position by the robot hand is held with the base metal 2 of the tool sandwiched in the thickness direction.
  • the cBN sintered body 3 joined to the corner of the base metal 2 is pressed against the end face of the rotating grindstone 12, and the flank 5 formed on the cBN sintered body.
  • the rake face 4 is ground.
  • the flank 5 is ground first, and then the rake face 4 is ground. This is preferable because the chipping suppression effect of the ridge line portion formed between both surfaces is higher than that in the case of grinding in the order of the rake face and the flank face.
  • the flank 5 is ground by pressing the flank 5 of the cBN cutting tool 1 gripped by the chuck 11 against the end face of the grindstone 12 and rotating the chuck 11 about the axis O as a machining region. To fluctuate.
  • an abrasive bar 7 perpendicular to the tool thickness direction is formed on the flank 5.
  • the abrasive bar perpendicular to the tool thickness direction here refers not only to a completely perpendicular direction, but is slightly inclined with respect to the line perpendicular to the tool thickness direction within a range that does not impair economic efficiency and workability. Includes directional abrasives.
  • the reason for making the polishing surface on the flank and rake face vertical is that the cost during mass production can be reduced. It is also possible to make slanted polishing streaks within the range where the effect can be obtained.
  • the flank 5 of the cBN sintered body 3 is flush with the side surface 2b of the base metal 2, the side surface of the base metal 2 is also ground at the same time. However, since the thickness of the cBN sintered body 3 is not so thick, the sagging cannot be ignored on the flank by this processing. If the flank 5 protrudes from the side surface 2b of the base metal 2, only the flank 5 is processed in this step.
  • the rake face 4 is ground.
  • the machining is performed without changing the cBN cutting tool 1 by the chuck 11.
  • the chuck 11 holding the cBN cutting tool 1 is rotated in the b-axis direction in FIG. 5, and the rake face of the cBN sintered body 3 is pressed in parallel with the end face of the grindstone 12 as shown in FIG. 7.
  • the cutting tool when the cutting tool is pressed against the grindstone 12, if only the cBN sintered body 3 is ground, the two types of materials having different hardness do not co-cut. Moreover, the grinding surface becomes small and it can use the grinding surface with the sharpness which gave dressing suitably. In addition to this, the finished tool will look good.
  • the upper surface of the cBN sintered body 3 protrudes from the upper surface (base metal scooping surface) of the base metal 2, only the cBN sintered body 3 is easily ground.
  • a part of the base metal may be ground together with the rake face of the cBN sintered body so long as it does not have the adverse effect of co-machining. If the edge of the grinding surface enters, for example, about 2 mm into the base metal 2 side, the adverse effect of co-cutting does not occur and the flatness of the rake face is not impaired.
  • the grinding of the rake face 4 is performed so that a polishing bar 8 that is nearly perpendicular to the bisector CL of the corner provided with the cBN sintered body 3 of the tool is formed.
  • the polishing bar 8 is a line having an R radius close to 300 mm. Since the cBN cutting tool is not so large, the polishing bar 8 looks like a straight line.
  • flank 5 and the rake face 4 When both the flank 5 and the rake face 4 are ground on the end face of the same grindstone, the flank 5 and the rake face 4 have a surface roughness ratio close to 1.
  • the rake face 4 is ground when the base metal upper surface (base metal rake face) before grinding and the upper surface of the cBN sintered body are flush with each other, as shown in FIG.
  • the upper surface 2a of the metal plate (the negative cutting tool having the same top and bottom surfaces is considered to be the top surface), and is preferably 0.1 mm or less between the top surface 2a of the base metal and the rake surface 4.
  • the step h is performed.
  • an edge e as shown by a chain line in FIG. 10 is formed at the boundary between the base metal 2 and the ground surface. Since the edge e is useless, the chamfered portion 9 (see FIG. 10) is preferably removed.
  • the chamfered portion 9 can be formed following the machining of the rake face 4 by rotating the chuck 11 from the state of FIG. 7 in the direction of the arrow in the figure (the clockwise direction in the figure).
  • the present invention also applies to a case where a tool in which the cBN blank is brazed after grinding the upper surface of the base metal (the base metal rake surface and the cBN blank are not flush) is the object of grinding.
  • a tool in which the cBN blank is brazed after grinding the upper surface of the base metal (the base metal rake surface and the cBN blank are not flush) is the object of grinding.
  • flank 5 and the rake face 4 When both the flank 5 and the rake face 4 are ground on the end face of the same grindstone, the flank 5 and the rake face 4 have a surface roughness ratio close to 1.
  • Negative land 10 When a negative land of a cutting edge is required, after the grinding of the flank 5 and the rake face 4 is finished, next, along the cutting edge 6 formed by the intersecting ridge line of the flank 5 and the rake face 4 Negative land 10 (see FIG. 11). As shown by the chain line in FIG. 5, the axis O of the chuck 11 is tilted. In this state, the portion forming the negative land is brought into contact with the end face of the grindstone 12, and the chuck 11 is moved to move the contact point in the longitudinal direction of the cutting edge.
  • the negative land 10 can be given by following.
  • the inclination angle ⁇ and the nominal width W (see FIG. 11) of the negative land 10 are made smaller than those of the conventional tool by suppressing the rake face sag (to optimize the negative land size of the finishing tool or the like). ) Becomes possible. Thereby, the variation of the nominal width W is reduced, and it is possible to further improve the core accuracy and improve the sharpness.
  • the flank has an abrasive bar perpendicular to the tool thickness direction
  • the rake surface has an abrasive bar nearly perpendicular to the bisector of the corner provided with the cBN sintered body of the tool
  • the rake surface is It fell from the upper surface of the base metal and had a step between the upper surface of the base metal.
  • a cBN cutting tool with high core accuracy can be manufactured, and therefore, trial cutting for adjusting the core height is not necessary even when a mass production tool is used.
  • the illustrated method is a simple method using a general peripheral polishing equipment, and the processing method is not limited as long as it has this effect.
  • each grinding process can also be performed in the procedure of grinding the rake face first and then grinding the flank face. Performing with a chuck and grinding the rake face so that the substantial grinding object is a cBN sintered body works effectively, so that the accuracy of the core height and the accuracy of the negative land are increased as compared with the conventional product.
  • the present invention is also applicable to a case where a tool in which the cBN blank is brazed after the upper surface of the base metal is ground (the base metal rake face and the cBN blank are not flush) is the target of grinding.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
PCT/JP2013/085028 2013-03-29 2013-12-27 ｃＢＮ切削工具の製造方法およびｃＢＮ切削工具 WO2014155890A1 (ja)

Priority Applications (7)

Application Number Priority Date Filing Date Title
KR1020157001647A KR20150135185A (ko) 2013-03-29 2013-12-27 ｃＢＮ 절삭 공구의 제조 방법 및 cBN 절삭 공구
MX2015001814A MX2015001814A (es) 2013-03-29 2013-12-27 Metodo para la fabricacion de herramienta de corte de nitruro de boro cubico y herramienta de corte de nitruro de boro cubico.
IN581DEN2015 IN2015DN00581A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 2013-03-29 2013-12-27
EP13880617.9A EP2979812B1 (en) 2013-03-29 2013-12-27 Method for manufacturing a cubic boron nitride cutting tool and cubic boron nitride cutting tool
CN201380040327.5A CN104520067B (zh) 2013-03-29 2013-12-27 制造立方氮化硼切削工具的方法及立方氮化硼切削工具
US14/415,496 US10160083B2 (en) 2013-03-29 2013-12-27 Method for manufacturing cubic boron nitride cutting tool and cubic boron nitride cutting tool
CA2879607A CA2879607A1 (en) 2013-03-29 2013-12-27 Method for manufacturing cubic boron nitride cutting tool and cubic boron nitride cutting tool

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013071821 2013-03-29
JP2013-071821 2013-03-29

Publications (1)

Publication Number Publication Date
WO2014155890A1 true WO2014155890A1 (ja) 2014-10-02

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US (1) US10160083B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
EP (1) EP2979812B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JP5930489B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
KR (1) KR20150135185A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CN (1) CN104520067B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA2879607A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
IN (1) IN2015DN00581A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
MX (1) MX2015001814A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
WO (1) WO2014155890A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

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JP1558993S (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 2015-11-17 2019-09-02
JP2017094467A (ja) * 2015-11-26 2017-06-01 住友電工ハードメタル株式会社 回転工具
CN109070246B (zh) * 2016-04-25 2021-06-18 京瓷株式会社 切削工具
JP6766998B2 (ja) * 2016-12-15 2020-10-14 住友電工焼結合金株式会社 スローアウェイチップ
JP6861269B2 (ja) * 2017-02-27 2021-04-21 京セラ株式会社 切削インサート、切削工具及び切削加工物の製造方法
US10245645B1 (en) * 2017-10-02 2019-04-02 Kennametal Inc. Tool carrier with notch, cutting insert and method for making same
WO2020090737A1 (ja) * 2018-10-29 2020-05-07 京セラ株式会社 切削インサート、切削工具及び切削加工物の製造方法
CN109454249B (zh) * 2018-11-16 2021-03-02 深圳市誉和钻石工具有限公司 一种光学车刀及其切割方法
US12030143B2 (en) * 2019-08-01 2024-07-09 Sumitomo Electric Hardmetal Corp. Method for manufacturing a cutting tool, and the cutting tool
CN111185858B (zh) * 2020-02-28 2022-04-01 北京道天技术研发有限公司 高精度超硬磨料整体切割砂轮的加工方法
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