JP2017113766A - レーザ加工装置、レーザ加工方法、光学系、及び肉盛り加工品 - Google Patents
レーザ加工装置、レーザ加工方法、光学系、及び肉盛り加工品 Download PDFInfo
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- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
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- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
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- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
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- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
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- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/067—Dividing the beam into multiple beams, e.g. multifocusing
- B23K26/0676—Dividing the beam into multiple beams, e.g. multifocusing into dependently operating sub-beams, e.g. an array of spots with fixed spatial relationship or for performing simultaneously identical operations
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- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
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- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
- B23K26/144—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor the fluid stream containing particles, e.g. powder
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- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
- B23K26/1462—Nozzles; Features related to nozzles
- B23K26/1464—Supply to, or discharge from, nozzles of media, e.g. gas, powder, wire
- B23K26/1476—Features inside the nozzle for feeding the fluid stream through the nozzle
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- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
- B23K26/242—Fillet welding, i.e. involving a weld of substantially triangular cross section joining two parts
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- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
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- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/34—Laser welding for purposes other than joining
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/30—Collimators
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/001—Axicons, waxicons, reflaxicons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
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- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/003—Pistons
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- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/006—Vehicles
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- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/18—Sheet panels
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- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
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- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/12—Copper or alloys thereof
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- Optical Elements Other Than Lenses (AREA)
Abstract
Description
特許文献3に開示されたレーザ加工装置では、このような構成を有することにより、線状のレーザビームのエネルギー密度特性が肉盛り幅方向でほぼ均一なものとなることから、肉盛り幅方向での入熱量の部分的なばらつきが生じにくく、特に肉盛り幅方向での部分的な母材希釈のない良好な肉盛り層を形成することができるとしている。
図1〜図3を参照して本実施の形態に係るレーザ加工装置10について説明する。図1(a)に示すように、レーザ加工装置10は、レーザ光源12、光学素子14、及びレンズ16を含んで構成されている。
レンズ16の集光作用により、光学素子14の面P1を透過した光は光束L1を形成し、面P2を透過した光は光束L2を形成する。その結果、本実施の形態に係るレーザ光の集光点(結像点)、あるいはそのY軸方向近傍におけるスポットSの形状は、Z軸の両方向に延伸された形状となり、例えば、図1(a)に示すように、スポットS1とスポットS2とに分離された形状となる。本実施の形態では、このように、スポットSをZ軸方向に延伸された形状、あるいは2つに分離された形状とすることにより、スポットSの中心部分における光強度を線状に低下させ、中心部分にレーザ光のパワーが集中しないようにすることが可能となっている。
図4〜図6を参照して、本実施の形態に係るレーザ加工装置10aについて説明する。
レーザ加工装置10aは、本実施の形態に係るレーザ加工装置を肉盛り加工に適用した形態である。図4(a)に示すように、レーザ加工装置10aは、上記のレーザ加工装置10に、肉盛り加工を行うための金属粉末供給機構30を追加したものとなっている。従って、レーザ光源12、光学素子14、及びレンズ16を含んで構成されるレーザ加工装置10は、上記の実施の形態に係るレーザ加工装置10と同じものなので、詳細な説明は省略する。
12 レーザ光源
14 光学素子
16 レンズ
18 光学系
30 金属粉末供給機構
32 ノズル
34 金属粉末・搬送ガス流路
36 遮蔽ガス流路
60 シリンダヘッド
62 シート面
64 給排気用バルブ孔
66、66a バルブシート
68 バルブ
80、80a 肉盛り部
82、82a 合金層
84 母材
L0 コリメート光
L、L1、L2 光束
PG 粉末混合ガス
SG 遮蔽ガス
P1、P2 面
R 稜線
θ、θi、θ1〜θ6 頂角
S、S1、S2 スポット
W1、W2 加工対象物
Claims (9)
- レーザ光源と、
前記レーザ光源から発生した光を平行光とするコリメート部と、
前記平行光を、光軸が異なる複数の平行光からなる光束に変換して透過する変換部を備えた光学素子と、
前記光束を加工対象物に向けて集光する集光部と、
を含むレーザ加工装置。 - 前記光学素子は、少なくとも2つの面で構成されるくさび形の前記変換部を備え、前記くさび形の稜線が前記レーザ光源の方向を向くようにして前記平行光内に配置される
請求項1に記載のレーザ加工装置。 - 前記光学素子は、円錐形状の前記変換部を備え、前記円錐形状の頂点が前記レーザ光源の方向を向くようにして前記平行光内に配置される
請求項1に記載のレーザ加工装置。 - 肉盛り加工を行うための肉盛り部材を供給する肉盛り部材供給部を備えた肉盛り加工部をさらに備え、
前記肉盛り加工部は、前記肉盛り部材供給部及び前記光束と、前記加工対象物と、を相対的に移動させつつ前記肉盛り部材供給部から前記加工対象物上に前記肉盛り部材を供給し、供給された前記肉盛り部材に前記光束を照射して肉盛り加工を行う
請求項1〜請求項3のいずれか1項に記載のレーザ加工装置。 - 前記肉盛り加工部は、前記肉盛り加工を行って、内燃機関用のシリンダヘッドのバルブシートを形成する
請求項4に記載のレーザ加工装置。 - 光源から発生した光を平行光とするコリメート部と、
前記平行光を、光軸が異なる複数の平行光からなる光束に変換して透過する光学素子と、
前記光束を集光する集光部と、
を含む光学系。 - コリメート部により、レーザ光源から発生した光を平行光とし、
光学素子により、前記平行光を、光軸が異なる複数の平行光からなる光束に変換して透過し、
集光部により、前記光束を加工対象物に向けて集光する
レーザ加工方法。 - 肉盛り加工を行うための肉盛り部材を供給する肉盛り部材供給部を備えた肉盛り加工部により、前記肉盛り部材供給部及び前記光束と、加工対象物と、を相対的に移動させつつ前記肉盛り部材供給部から前記加工対象物上に前記肉盛り部材を供給し、供給された前記肉盛り部材に前記光束を照射して肉盛り加工を行う
請求項7に記載のレーザ加工方法。 - 第1の金属からなる母材と、
前記母材上に第2の金属により形成された肉盛り部と、
前記母材と前記肉盛り部との間に配置された前記母材と前記肉盛り部とを溶融接合する合金部と、
を含み、前記母材と前記合金部との接合面の形状が椀形状である肉盛り加工品であって、
前記肉盛り部及び前記合金部は、前記母材上に肉盛り部材が供給されているときに、レーザ光源から発生した光から得られる平行光が、光学素子により、光軸が異なる複数の平行光からなる光束に変換され、集光部により、前記光束が加工対象物に向けて集光されることにより、供給された前記肉盛り部材に前記光束を照射され、肉盛り加工が行われることにより形成された
肉盛り加工品。
Priority Applications (3)
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JP2015249409A JP6441788B2 (ja) | 2015-12-22 | 2015-12-22 | レーザ加工装置、レーザ加工方法、光学系、及び肉盛り加工品 |
PCT/JP2016/081941 WO2017110241A1 (ja) | 2015-12-22 | 2016-10-27 | レーザ加工装置、レーザ加工方法、光学系、及び肉盛り加工品 |
US15/778,539 US20180345404A1 (en) | 2015-12-22 | 2016-10-27 | Laser processing device, laser processing method, optical system, and cladded article |
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CN112975113A (zh) * | 2021-04-20 | 2021-06-18 | 苏州德龙激光股份有限公司 | 非对称分束激光加工透明材料的装置及其方法 |
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DE102018212908B4 (de) * | 2018-08-02 | 2022-09-01 | Ford Global Technologies, Llc | Beschichteter Ventilsitzbereich eines Verbrennungsmotors |
CN113737173B (zh) * | 2021-08-25 | 2023-12-26 | 武汉瀚海智能激光工程有限公司 | 一种激光熔覆头装置 |
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JP2006263771A (ja) * | 2005-03-24 | 2006-10-05 | Mitsubishi Heavy Ind Ltd | レーザ加工装置及びレーザ加工方法 |
US8334478B2 (en) * | 2007-01-15 | 2012-12-18 | Japan Unix Co., Ltd. | Laser type soldering apparatus |
DE102007024700A1 (de) * | 2007-05-25 | 2008-12-04 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zur Materialbearbeitung mit Laserstrahlung sowie Vorrichtung zur Durchführung des Verfahrens |
DE102015201639B4 (de) * | 2015-01-30 | 2018-01-04 | Asphericon Gmbh | Strahlfokussierer und Verwendungen |
TWI604907B (zh) * | 2016-10-11 | 2017-11-11 | 財團法人工業技術研究院 | 雷射均勻加工裝置及其方法 |
EP3569388B1 (en) * | 2018-05-15 | 2023-05-03 | Howmedica Osteonics Corp. | Fabrication of components using shaped energy beam profiles |
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JPH05256190A (ja) * | 1992-03-13 | 1993-10-05 | Nissan Motor Co Ltd | シリンダヘッド |
JPH0760470A (ja) * | 1993-08-30 | 1995-03-07 | Sumitomo Heavy Ind Ltd | レーザ加工機 |
JP2007185707A (ja) * | 2006-01-16 | 2007-07-26 | Ricoh Opt Ind Co Ltd | 光溶着用光学ユニットおよび光溶着装置 |
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CN112975113A (zh) * | 2021-04-20 | 2021-06-18 | 苏州德龙激光股份有限公司 | 非对称分束激光加工透明材料的装置及其方法 |
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