WO2006003788A1 - 超精密加工用単結晶ダイヤモンド切削工具 - Google Patents
超精密加工用単結晶ダイヤモンド切削工具 Download PDFInfo
- Publication number
- WO2006003788A1 WO2006003788A1 PCT/JP2005/010912 JP2005010912W WO2006003788A1 WO 2006003788 A1 WO2006003788 A1 WO 2006003788A1 JP 2005010912 W JP2005010912 W JP 2005010912W WO 2006003788 A1 WO2006003788 A1 WO 2006003788A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cutting edge
- cutting
- single crystal
- conical surface
- crystal diamond
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
- B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
- B23B27/18—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
- B23B2200/00—Details of cutting inserts
- B23B2200/24—Cross section of the cutting edge
- B23B2200/245—Cross section of the cutting edge rounded
-
- 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
- B23B2240/00—Details of connections of tools or workpieces
- B23B2240/08—Brazed connections
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2200/00—Details of milling cutting inserts
- B23C2200/20—Top or side views of the cutting edge
- B23C2200/203—Curved cutting edges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2200/00—Details of milling cutting inserts
- B23C2200/24—Cross section of the cutting edge
- B23C2200/243—Cross section of the cutting edge bevelled or chamfered
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2200/00—Details of milling cutting inserts
- B23C2200/24—Cross section of the cutting edge
- B23C2200/246—Cross section of the cutting edge rounded
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2200/00—Details of milling cutting inserts
- B23C2200/28—Angles
- B23C2200/283—Negative cutting angles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T407/00—Cutters, for shaping
- Y10T407/23—Cutters, for shaping including tool having plural alternatively usable cutting edges
- Y10T407/235—Cutters, for shaping including tool having plural alternatively usable cutting edges with integral chip breaker, guide or deflector
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T407/00—Cutters, for shaping
- Y10T407/26—Cutters, for shaping comprising cutting edge bonded to tool shank
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T407/00—Cutters, for shaping
- Y10T407/27—Cutters, for shaping comprising tool of specific chemical composition
Definitions
- the present invention is applicable to crystalline materials such as Si, Ge, and CaF, cemented carbide, glass, and mold base materials.
- the present invention relates to a single crystal diamond cutting tool for ultra-precise cutting of hard and brittle materials to be used.
- Crystal materials such as 2 and hard brittle materials such as cemented carbide molds and glass are used, and ultra-precision diamond cutting tools are used to process these materials with high precision.
- this cutting tool there is a diamond cutting tool with a single crystal diamond tip on the cutting edge.
- a rake face is used to achieve good shape accuracy and surface roughness by curved turning of brittle materials.
- a diamond tip having a conical shape see, for example, Japanese Patent Laid-Open No. 63-237803 (Patent Document 1)).
- the bite nose is curved with a rounded shape, and a rake face is formed so as to have a negative rake angle.
- Some are formed so as to form a part of a conical surface of a right cone (for example, see Japanese Patent Publication No. 64-64702 (Patent Document 2)).
- the rake face of the blade portion formed of single crystal diamond as shown in FIGS. 5A to 5C has a rake angle.
- Ultra-precise cutting method of crystal material such as diamond tool (see Japanese Patent Application Laid-Open No. 11-347807 (Patent Document 3)) and ZnSe lens fixed to the tool body so as to have a negative angle of 25 to 60 °
- the rake angle is -20 to 20 degrees
- the clearance angle is 5 to 10 degrees
- the cutting edge edge edge is 0.5 to 2 ⁇ m wide to prevent chipping.
- Patent Document 1 Japanese Patent Laid-Open No. 63-237803
- Patent Document 2 Japanese Patent Application Laid-Open No. 64-64702
- Patent Document 3 Japanese Patent Laid-Open No. 11-347807
- Patent Document 4 Japanese Patent Laid-Open No. 10-43903
- Fig. 4 shows the outline of cutting a workpiece into a spherical surface using a diamond tool with the most frequently used 2-axis control lathe.
- the workpiece 11 rotates about the rotation axis 12 and is cut by sending the diamond tool 1 in the X-axis and Z-axis directions.
- the height of the cutting edge varies depending on the position where the R-shaped cutting edge acts, so that stable cleaning cannot be performed, which may cause a shape error. This is because the position in the Y-axis direction changes, that is, the core height changes depending on the position where the cutting edge 5 acts as described above. Especially when processing aspherical surfaces, large shape errors are likely to occur.
- the diamond cutting tool of the present invention can perform high-precision processing without causing a shape error of the material to be processed when performing ultra-fine cutting of a crystal material or a hard and brittle material. Long-life single crystal diamond with less cutting edge wear and micro-chipping A cutting tool is provided.
- the first feature of the single crystal diamond cutting tool for ultra-precision machining of the present invention is a diamond cutting tool provided with a single crystal diamond tip having an R-shaped cutting edge at the tip,
- At least the portion that acts as the cutting edge is formed with a constant R by the intersection of the first conical surface serving as the rake face and the second conical surface serving as the flank.
- the radius of the edge is less than lOOnm, and the width of the first conical surface is 1-5 / ⁇ ⁇ .
- a chip relief surface in a direction substantially perpendicular to the cutting direction is provided on a portion of the first conical surface opposite to the cutting edge ridge line.
- the second feature is that an intersection of the first conical surface and the chip relief surface is an R surface having an R of a predetermined dimension.
- a third feature is that the radius of the R plane is set to 0.1 to 1.0 ⁇ m.
- the fourth feature is that the rake angle of the first conical surface is a negative angle, and the angle is 15 to 50 °.
- the fifth feature is that there is no lattice defect in the diamond crystal within 100 m from the tip of the cutting edge.
- the single-crystal diamond cutting tool of the present invention has good chip evacuation and can reduce cutting resistance when performing ultra-precise cutting processing of crystalline materials and hard and brittle materials. Accuracy is improved. In addition, the shape error of the work material does not occur and high-precision machining can be performed, and the life can be improved due to wear of the cutting edge and micro-chipping.
- FIG. 1A is a plan view showing a single crystal diamond tool of the present invention.
- FIG. 1B is a front view showing a single crystal diamond tool of the present invention.
- FIG. 1C is a partially enlarged front view around the cutting edge of the single crystal diamond tool of the present invention.
- FIG. 2 is a perspective view showing an example of a diamond tip of a single crystal diamond tool of the present invention.
- FIG. 3 is a perspective view showing an example of a diamond tip of a conventional single crystal diamond tool.
- FIG. 4 is a diagram for explaining a machining state by a two-axis control lathe.
- FIG. 5A is a plan view showing another example of a conventional single crystal diamond tool.
- FIG. 5B is a front view showing another example of a conventional single crystal diamond tool.
- FIG. 5C is a partially enlarged front view around the cutting edge in another example of a conventional single crystal diamond tool.
- FIG. 6A is a plan view showing still another example of a conventional single crystal diamond tool.
- FIG. 6B is a front view showing still another example of a conventional single crystal diamond tool.
- FIG. 7A is a plan view showing another example of a diamond tip of a conventional single crystal diamond tool.
- FIG. 7B is a front view showing another example of a diamond tip of a conventional single crystal diamond tool.
- FIGS. 1A to 1C a single crystal diamond cutting tool is shown in FIGS. 1A to 1C, and an enlarged perspective view of the tip is shown in FIG.
- a tip 2 made of single crystal diamond is fixed to the tip of a tool body 8 such as a cemented carbide by brazing.
- the tip 2 has an R-shaped cutting edge 5 at the tip, and the cutting edge 5 is formed by the intersection of the surface 3 and the flank 4. That is, at least a portion of the surface 3 that acts as a cutting edge is formed by a first conical surface, and its width Is 1-5 ⁇ m, the rake angle is negative and the angle is 15-50 °.
- flank 4 that acts as a cutting edge is formed by a second conical surface, and each surface has a flat surface connected to the conical surface on the rear end side.
- a straight ridge line is formed at the intersection of the planes, which does not act as a cutting edge.
- the effective rake angle does not change even when the working position of the R-shaped cutting edge changes, the machined surface becomes stable, and a highly accurate machined surface is obtained.
- the control of the position of the cutting blade becomes easy. Also, by making the rake face a conical surface, a constant R cutting edge can be obtained.
- the width of rake face 3 in this application is from point X where rake face 3 and flank face 4 intersect to point Y where rake face 3 and chip evacuation face 6 intersect as shown in Fig. 1C. Let's say the distance.
- the roundness of the edge of the cutting edge 5 is a sharp cutting edge with a radius of less than lOOnm. By doing so, it becomes a sharp cutting edge and enables ultra-precise cutting.
- a chip relief surface 6 is formed on the rear end side (the side opposite to the side where the cutting edge 5 is formed) of the conical portion of the rake face 3, and the chip relief surface 6 is approximately the cutting direction.
- R plane 7 is formed at the intersection of rake face 3 and chip relief face 6.
- single crystal diamond is set so that there is no lattice defect in the diamond crystal within a range of 100 m from the tip, and there is a lattice defect around the cutting edge 5. do not do. As a result, even if the cutting edge 5 is sharp as described above, the tool life is less prone to wear and micro-chipping.
- a single crystal diamond tool of the present invention a diamond tool shown in FIGS. 1A to 1C (hereinafter referred to as an example of the present invention) was manufactured, and as a comparative example, a conventional single crystal diamond tool shown in FIG. And a single crystal diamond tool having a cutting edge shown in FIGS. 7A to 7B (hereinafter referred to as Comparative Example 2), and cutting the single crystal silicon.
- the performance was compared.
- the rake face width L is 1.2 m
- the rake angle ⁇ is 15 ° of the negative angle
- the radius r of the round edge of the cutting edge ridge is 60 nm
- the radius P of the R face 7 is 0.3 ⁇ m. It was.
- the rake face width L is 100 m
- the rake angle ⁇ is 25 ° of the negative angle
- the intersection of the rake face 3 and the chip relief face 6 is a pin angle
- the radius r of the round edge of the cutting edge ridge is lOOnm.
- the rake angle was 0 °
- the radius r of the roundness of the cutting edge ridge was lOOnm.
- the radius R of the cutting edge is 1.2 mm.
- these diamond tools were mounted on a 2-axis control lathe, and a single crystal silicon spherical shape was processed by the CNC 2-axis control method.
- the cutting conditions were wet machining with a spindle speed of the workpiece of 2000 rpm, a tool feed rate of 0.00175 mm / rev, and a machining allowance of 0.0015 mm.
- a vibration acceleration sensor was attached to the rear end of the diamond tool to measure vibration acceleration.
- the surface roughness Ra in the initial stage of the example of the present invention is 0.60067 m, and the surface roughness is gradually increased every time machining is repeated. It was a bad force. 60 sheets with acceptable surface roughness were covered.
- the PV value was 0.042 m, the rms was 0.009 m, and the ij resistance (vibration calorie speed) during the calorific work was 0.05 G.
- the surface roughness Ra at the initial stage of processing is 0.0138 ⁇ m, which is about twice the roughness of the present invention example, and chipping occurred when processing continued. It was. Also, the PV value was 0.008: m, rms «0.018 m, and the cutting resistance (vibration acceleration) during machining was 0.2 G, which was very high compared to the present invention example.
- the single crystal diamond tool of the present invention has good chip evacuation and improves the accuracy of the work surface.
- there is no shape error in the work material high-precision machining is possible, and the life of the workpiece is improved due to wear of the cutting edge and micro-chipping. To do it.
- the single crystal diamond tool of the present invention can be used as a cutting tool for performing ultra-precise cutting such as a crystal material, a hard and brittle material, or a difficult-to-cut material.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE602005016114T DE602005016114D1 (de) | 2004-06-30 | 2005-06-15 | Einkristalldiamantschneidwerkzeug zur ultrapräzisionsbearbeitung |
EP05751560A EP1762321B1 (en) | 2004-06-30 | 2005-06-15 | Single crystal diamond cutting tool for ultraprecision machining |
US10/571,605 US7556456B2 (en) | 2004-06-30 | 2005-06-15 | Mono crystalline diamond cutting tool for ultra precision machining |
CA002542903A CA2542903C (en) | 2004-06-30 | 2005-06-15 | Mono crystalline diamond cutting tool for ultra precision machining |
AT05751560T ATE439928T1 (de) | 2004-06-30 | 2005-06-15 | Einkristalldiamantschneidwerkzeug zur ultrapräzisionsbearbeitung |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004192649A JP4585243B2 (ja) | 2004-06-30 | 2004-06-30 | 超精密加工用単結晶ダイヤモンド切削工具 |
JP2004-192649 | 2004-06-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006003788A1 true WO2006003788A1 (ja) | 2006-01-12 |
Family
ID=35782600
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/010912 WO2006003788A1 (ja) | 2004-06-30 | 2005-06-15 | 超精密加工用単結晶ダイヤモンド切削工具 |
Country Status (7)
Country | Link |
---|---|
US (1) | US7556456B2 (ja) |
EP (1) | EP1762321B1 (ja) |
JP (1) | JP4585243B2 (ja) |
AT (1) | ATE439928T1 (ja) |
CA (1) | CA2542903C (ja) |
DE (1) | DE602005016114D1 (ja) |
WO (1) | WO2006003788A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2322538A1 (fr) | 2007-03-28 | 2011-05-18 | Guerbet | Composés pour le diagnostique de maladies liées à l'expression de VCAM |
US10512974B1 (en) * | 2016-12-07 | 2019-12-24 | Quantum Valley Investment Fund LP | Diamond machining tool |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4644259B2 (ja) * | 2006-02-08 | 2011-03-02 | 株式会社コガネイ | 加工工具および加工方法 |
GB0700984D0 (en) * | 2007-01-18 | 2007-02-28 | Element Six Ltd | Polycrystalline diamond elements having convex surfaces |
JP5197383B2 (ja) * | 2007-01-19 | 2013-05-15 | 住友電気工業株式会社 | 切削工具 |
JP2010036296A (ja) * | 2008-08-05 | 2010-02-18 | Osg Corp | 単結晶ダイヤモンドバイト及び単結晶ダイヤモンドバイトの製造方法 |
JP5769531B2 (ja) * | 2011-07-22 | 2015-08-26 | 京セラ株式会社 | 切削チップおよび切削工具 |
JP5878086B2 (ja) | 2012-06-21 | 2016-03-08 | 住友電工ハードメタル株式会社 | 切削工具の製造方法 |
US10213850B2 (en) * | 2013-04-25 | 2019-02-26 | Kennametal Inc. | Cutting insert, a cutting insert holder, a system including the cutting insert and cutting insert holder, and a method of manufacturing thereof |
DE102014207510B4 (de) | 2014-04-17 | 2021-12-16 | Kennametal Inc. | Zerspanungswerkzeug sowie Verfahren zum Herstellen eines Zerspanungswerkzeugs |
DE102014207507B4 (de) | 2014-04-17 | 2021-12-16 | Kennametal Inc. | Zerspanungswerkzeug sowie Verfahren zum Herstellen eines Zerspanungswerkzeugs |
US9643282B2 (en) | 2014-10-17 | 2017-05-09 | Kennametal Inc. | Micro end mill and method of manufacturing same |
JPWO2020031871A1 (ja) * | 2018-08-06 | 2021-08-26 | 住友電工ハードメタル株式会社 | 旋削工具 |
WO2021020007A1 (ja) * | 2019-08-01 | 2021-02-04 | 住友電工ハードメタル株式会社 | 切削工具の製造方法および切削工具 |
CN114981028B (zh) * | 2020-01-17 | 2024-04-05 | 联合材料公司 | 单晶金刚石切削工具 |
JP7405376B2 (ja) * | 2021-10-08 | 2023-12-26 | 三菱重工業株式会社 | 切削条件の決定方法 |
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2004
- 2004-06-30 JP JP2004192649A patent/JP4585243B2/ja not_active Expired - Lifetime
-
2005
- 2005-06-15 EP EP05751560A patent/EP1762321B1/en not_active Not-in-force
- 2005-06-15 CA CA002542903A patent/CA2542903C/en active Active
- 2005-06-15 DE DE602005016114T patent/DE602005016114D1/de active Active
- 2005-06-15 US US10/571,605 patent/US7556456B2/en active Active
- 2005-06-15 AT AT05751560T patent/ATE439928T1/de not_active IP Right Cessation
- 2005-06-15 WO PCT/JP2005/010912 patent/WO2006003788A1/ja not_active Application Discontinuation
Patent Citations (4)
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JPS63237803A (ja) * | 1987-03-23 | 1988-10-04 | Mitsubishi Electric Corp | ダイヤモンドチツプ |
JPH058104A (ja) * | 1991-07-04 | 1993-01-19 | Toshiba Tungaloy Co Ltd | 切削工具 |
JPH06190610A (ja) * | 1992-12-25 | 1994-07-12 | Osaka Diamond Ind Co Ltd | ダイヤモンド工具 |
JP2003117717A (ja) * | 2000-10-27 | 2003-04-23 | Sumitomo Electric Ind Ltd | ワイパーチップおよび回転切削工具用ワイパーチップ |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2322538A1 (fr) | 2007-03-28 | 2011-05-18 | Guerbet | Composés pour le diagnostique de maladies liées à l'expression de VCAM |
US10512974B1 (en) * | 2016-12-07 | 2019-12-24 | Quantum Valley Investment Fund LP | Diamond machining tool |
Also Published As
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CA2542903C (en) | 2008-01-22 |
US20080253849A1 (en) | 2008-10-16 |
JP4585243B2 (ja) | 2010-11-24 |
US7556456B2 (en) | 2009-07-07 |
CA2542903A1 (en) | 2006-01-12 |
JP2006015412A (ja) | 2006-01-19 |
DE602005016114D1 (de) | 2009-10-01 |
EP1762321A4 (en) | 2007-03-14 |
ATE439928T1 (de) | 2009-09-15 |
EP1762321A1 (en) | 2007-03-14 |
EP1762321B1 (en) | 2009-08-19 |
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