JPWO2018092195A1 - 切削工具 - Google Patents
切削工具 Download PDFInfo
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- JPWO2018092195A1 JPWO2018092195A1 JP2018550902A JP2018550902A JPWO2018092195A1 JP WO2018092195 A1 JPWO2018092195 A1 JP WO2018092195A1 JP 2018550902 A JP2018550902 A JP 2018550902A JP 2018550902 A JP2018550902 A JP 2018550902A JP WO2018092195 A1 JPWO2018092195 A1 JP WO2018092195A1
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- cutting
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- cutting tool
- boron nitride
- cubic boron
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- 238000005520 cutting process Methods 0.000 title claims abstract description 269
- 239000002245 particle Substances 0.000 claims abstract description 172
- 239000002131 composite material Substances 0.000 claims abstract description 107
- 229910052582 BN Inorganic materials 0.000 claims abstract description 92
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims abstract description 92
- 239000010432 diamond Substances 0.000 claims abstract description 86
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 85
- 239000011230 binding agent Substances 0.000 claims abstract description 29
- 230000002093 peripheral effect Effects 0.000 claims abstract description 18
- 239000010941 cobalt Substances 0.000 claims description 19
- 229910017052 cobalt Inorganic materials 0.000 claims description 19
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 19
- 238000005304 joining Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 description 26
- 238000012360 testing method Methods 0.000 description 26
- 238000000034 method Methods 0.000 description 22
- 239000000843 powder Substances 0.000 description 12
- 239000013078 crystal Substances 0.000 description 11
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 10
- 238000005245 sintering Methods 0.000 description 9
- 239000010730 cutting oil Substances 0.000 description 6
- 238000002149 energy-dispersive X-ray emission spectroscopy Methods 0.000 description 6
- 238000002156 mixing Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000011812 mixed powder Substances 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000005219 brazing Methods 0.000 description 3
- 239000011195 cermet Substances 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910001026 inconel Inorganic materials 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- UNASZPQZIFZUSI-UHFFFAOYSA-N methylidyneniobium Chemical compound [Nb]#C UNASZPQZIFZUSI-UHFFFAOYSA-N 0.000 description 2
- NFFIWVVINABMKP-UHFFFAOYSA-N methylidynetantalum Chemical compound [Ta]#C NFFIWVVINABMKP-UHFFFAOYSA-N 0.000 description 2
- 239000010955 niobium Substances 0.000 description 2
- 229910003468 tantalcarbide Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 description 2
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
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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
- B23B27/148—Composition of the cutting inserts
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- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/06—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of threaded articles, e.g. nuts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
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- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/062—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts
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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
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B23C5/1018—Ball nose end mills with permanently fixed cutting inserts
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- 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
- B23C5/1054—T slot cutters
- B23C5/1063—T slot cutters with permanently fixed cutting inserts
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- 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
- B23C5/1081—Shank-type cutters, i.e. with an integral shaft with permanently fixed cutting inserts
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- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/16—Milling-cutters characterised by physical features other than shape
- B23C5/18—Milling-cutters characterised by physical features other than shape with permanently-fixed cutter-bits or teeth
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- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D77/00—Reaming tools
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- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
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- C22C—ALLOYS
- C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C29/005—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides comprising a particular metallic binder
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- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/062—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on B4C
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- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
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- B23C—MILLING
- B23C2210/00—Details of milling cutters
- B23C2210/03—Cutting heads comprised of different material than the shank irrespective of whether the head is detachable from the shank
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- B23C2210/00—Details of milling cutters
- B23C2210/04—Angles
- B23C2210/0407—Cutting angles
- B23C2210/0442—Cutting angles positive
- B23C2210/045—Cutting angles positive axial rake angle
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- B23C—MILLING
- B23C5/00—Milling-cutters
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B23D2277/02—Cutting head and shank made from two different components which are releasably or non-releasably attached to each other
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- B23D2277/00—Reaming tools
- B23D2277/24—Materials of the tool or the intended workpiece, methods of applying these materials
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Abstract
Description
一般に、ニッケル(Ni)基の耐熱合金等は、難削材とされている。難削材を高能率で転削するためには、切削工具の耐摩耗性、耐欠損性及び耐熱性が必要とされる。
本開示に係る切削工具によると、被削材が難削材であったとしても耐摩耗性、耐欠損性及び耐熱性を確保することができる。
最初に本開示の実施態様を列記して説明する。
上記(7)の切削工具によると、耐摩耗性及び耐欠損性をさらに向上させることができる。
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の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実施形態に係る切削工具の構成について説明する。図1は、第1実施形態に係る切削工具の側面図である。図2は、第1実施形態に係る切削工具の斜視図である。図1及び図2に示すように、第1実施形態に係る切削工具は、中心軸Aを有している。
以下に、第1実施形態に係る切削工具の製造方法について説明する。図6は、第1実施形態に係る切削工具の製造方法を説明するための工程図である。図6に示すように、第1実施形態に係る切削工具の製造方法は、焼結工程S1と、切れ刃形成工程S2と、組立工程S3とを有している。
以下に第1実施形態に係る切削工具の効果について説明する。第1実施形態に係る切削工具においては、切れ刃22cが表面部22と一体となっている。すなわち、第1実施形態に係る切削工具においては、切れ刃22cがろう付け等により取り付けられていない。そのため、第1実施形態に係る切削工具によると、切削熱により切れ刃22cの周辺が溶融することはなく、切れ刃22c周辺の破損が生じにくい。
第1実施形態に係る切削工具のより詳細な効果を確認するため、以下の第1の切削試験、第2の切削試験及び第3の切削試験を行った。
第1の切削試験における被削材は、ニッケル基の耐熱合金で難削材であるインコネル(登録商標)718である。第1の切削試験においては、切削速度Vが500mm/秒、刃当たり送り量fzが0.05mm/枚、切込幅Aeが0.5mm、切込量Apが0.3mmとの切削条件を適用した。なお、切削油としては、エマルジョンタイプの切削油(20倍希釈)が用いられた。
第2の切削試験における被削材は、第1の切削試験と同様に、インコネル(登録商標)718である。第2の切削試験においては、切削速度Vが500mm/秒、刃当たり送り量fzが0.15mm/枚、切込幅Aeが0.1mm、切込量Apが0.3mmとの切削条件を適用した。なお、切削油としては、エマルジョンタイプの切削油(20倍希釈)が用いられた。
第3の切削試験における被削材は、第1及び第2の切削試験と同様に、インコネル(登録商標)718である。第3の切削試験においては、切削速度Vが500mm/秒、刃当たり送り量fzが0.15mm/枚、切込幅Aeが0.5mm、切込量Apが0.3mmとの切削条件を適用した。なお、切削油としては、エマルジョンタイプの切削油(20倍希釈)が用いられた。
以下に、第2実施形態に係る切削工具の構成について説明する。以下においては、第1実施形態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実施形態に係る切削工具の製造方法は、第1実施形態に係る切削工具の製造方法と同様である。
第2実施形態に係る切削工具によると、複合焼結体中にダイヤモンド粒子のスケルトン構造が形成される。そのため、第2実施形態に係る切削工具によると、切削工具の耐摩耗性及び耐欠損性をさらに向上させることができる。
Claims (12)
- シャンク部と、
接合部と、
前記接合部を介して前記シャンク部に取り付けられる切削部とを備え、
前記切削部は、コア部と、前記切削部の中心軸まわりに配置されることで前記コア部の外周面を覆う表面部とを有し、
前記表面部は、前記表面部の外周面上に設けられ、かつ前記中心軸回りの螺旋状に形成された切れ刃を含み、
前記表面部は、複数のダイヤモンド粒子と複数の立方晶窒化硼素粒子とにより構成される硬質相と、残部を構成する結合相とを含む複合焼結体である、切削工具。 - 前記複合焼結体中における前記硬質相の体積の比率は、0.6以上0.99以下である、請求項1に記載の切削工具。
- 前記硬質相の体積に対する前記複数の前記立方晶窒化硼素粒子の体積の比率は、0.1以上0.4以下である、請求項1に記載の切削工具。
- 前記硬質相の体積に対する前記複数の前記立方晶窒化硼素粒子の体積の比率は、0.2以上0.4以下である、請求項3に記載の切削工具。
- 前記複数の前記ダイヤモンド粒子のD50は、0.3μm以上5μm以下であり、
前記複数の前記ダイヤモンド粒子のD90は、10μm以下であり、
前記複数の前記立方晶窒化硼素粒子のD50は、0.3μm以上3μm以下であり、
前記複数の前記立方晶窒化硼素粒子のD90は、5μm以下である、請求項1に記載の切削工具。 - 前記複数の前記ダイヤモンド粒子のD50は、0.3μm以上2μm以下であり、
前記複数の前記ダイヤモンド粒子のD90は、3μm以下であり、
前記複数の前記立方晶窒化硼素粒子のD50は、0.3μm以上2μm以下であり、
前記複数の前記立方晶窒化硼素粒子のD90は、3μm以下である、請求項5に記載の切削工具。 - 前記結合相は、コバルトを含む、請求項1に記載の切削工具。
- 前記コア部は、コバルトを含有する超硬合金で構成されており、
前記超硬合金中における前記コバルトの体積比率は、0.1以上0.2以下である、請求項1〜7のいずれか1項に記載の切削工具。 - 前記切れ刃のねじれ角は35°以上75°以下である、請求項1〜8のいずれか1項に記載の切削工具。
- 前記ねじれ角は45°以上70°以下である、請求項9に記載の切削工具。
- 前記ねじれ角は55°以上65°以下である、請求項10に記載の切削工具。
- 前記接合部により前記切削部に接合され、かつ前記シャンク部に着脱可能に取付けられる取付部をさらに備える、請求項1〜11のいずれか1項に記載の切削工具。
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US10717134B2 (en) | 2020-07-21 |
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