JPS5874294A - Laser welding method - Google Patents

Laser welding method

Info

Publication number
JPS5874294A
JPS5874294A JP56173394A JP17339481A JPS5874294A JP S5874294 A JPS5874294 A JP S5874294A JP 56173394 A JP56173394 A JP 56173394A JP 17339481 A JP17339481 A JP 17339481A JP S5874294 A JPS5874294 A JP S5874294A
Authority
JP
Japan
Prior art keywords
energy
laser
points
welding
bifocal lens
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP56173394A
Other languages
Japanese (ja)
Inventor
Jun Saito
潤 斎藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP56173394A priority Critical patent/JPS5874294A/en
Publication of JPS5874294A publication Critical patent/JPS5874294A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • 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
    • B23K26/02—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
    • B23K26/073—Shaping the laser spot

Abstract

PURPOSE:To perform firm seam welding by using a bifocal lens in laser welding of thin sheets thereby making energy power uniform and obtaining broad molten parts. CONSTITUTION:A beam of laser light 2 irradiated from a laser apparatus is bisected by using a bifocal lens 3 to bisect the energy thereof. The bisected beams of the laser light are focused at adjacent two points. As a result, an energy distribution around these two points is created and seam welding is accomplished by obtaining broad molten parts 4. The easy adjustment of small energy is made possible by the bisection of the laser energy and the broad molten parts 4 of about 1.5-2 times that in the case of single focus are obtained by focusing to the adjacent two points.

Description

【発明の詳細な説明】 １）　発明の目的 本発明は薄板のレーザー溶接において２焦点レンズを用
いる事によりエネルギーパワーの均一化を図り幅広い溶
融部を得ることにより強固なシーム溶接を行ないつるレ
ーザー溶接法を提供せんとする。[Detailed Description of the Invention] 1) Purpose of the Invention The present invention uses a bifocal lens in laser welding of thin plates to uniformize the energy power and obtain a wide fusion zone, thereby achieving strong seam welding. We try to provide law.

２）従来例 従来薄板（１）の溶接に詔いては第１−の如く突き合わ
せ溶接が中心であるが極薄板材の場合突き合わせ溶接が
非常に困難である。そしてその場合第２図のよう魯こ被
溶接部を重ねてレーザー光（２）を照射して溶接を行な
うことがおこな屹れていた。しかし被溶接部が薄いため
に大きなエネルギーパワーを受けることができず、薄板
（１）の破壊が生じるためレーザエネルギーを小さくし
てやる必要がありその結果、広い溶融部が得られず溶接
強度が弱いという欠点がある。これはレーザ照射に単焦
点レンズ（５）を使用していたξと番ζ起因する。2) Conventional Example In the conventional welding of thin plates (1), butt welding has been the main method as shown in item 1-1, but butt welding is extremely difficult in the case of extremely thin plates. In this case, welding was often carried out by irradiating the laser beam (2) with the parts to be welded overlapped as shown in FIG. However, since the part to be welded is thin, it cannot receive a large amount of energy power and the thin plate (1) will be destroyed, so it is necessary to reduce the laser energy.As a result, a wide fusion zone cannot be obtained and the welding strength is weak. There are drawbacks. This is due to the fact that a single focus lens (5) was used for laser irradiation.

本発明は上記欠点を除去せんとするものである。The present invention seeks to eliminate the above drawbacks.

以下本発明を実施例に基づき説明する。　　−３）発明
の構成 本発明番こあってはレーザ溶接の際に第３ｒＩＡの如く
レーザ機器より照射される１つのレーザ光（２）を２焦
点レンズ（３）を使用して２分割し、エネルギーを２分
割し隣接する２点に焦点をあわせ、この２点を中心とす
る第４凶の如きエネルギー分布を作り幅広い溶融部（４
）が得られるようにしてシーム溶接を行なうのである。The present invention will be explained below based on examples. -3) Structure of the invention In this invention, one laser beam (2) irradiated from a laser device such as the third rIA during laser welding is divided into two using a bifocal lens (3), Divide the energy into two and focus on two adjacent points, creating an energy distribution centered on these two points like the fourth evil, and creating a wide molten area (four points).
) Seam welding is performed in such a way that the following is obtained.

而してレーザエネルギーを２分割する事により小さなエ
ネルギーの調整が容易にでき、又隣接する２点に焦点を
あわせることにより１焦点の場合の１．５〜２倍程度の
巾広い溶融部（４）を得る事ができ強固なシーム溶接を
行なう事ができる。もちろんシーム溶接だけでなくスポ
ット溶接に本発明を利用しても同様な効果が得られる。By dividing the laser energy into two, it is possible to easily adjust small amounts of energy, and by focusing on two adjacent points, a molten zone (4 to 4 ), making it possible to perform strong seam welding. Of course, similar effects can be obtained by applying the present invention not only to seam welding but also to spot welding.

４）発明の効果 以上の如く本発明にあっては、レーザー機器より照射さ
れる１つのレーザー光を２焦点レンズにより２分割し、
隣接する２点に焦点をあわせて被溶接部にレーザーを照
射するようにしたので、微小エネルギーの１整が容易に
なり、又幅広い溶融部が形成され充分な強度を有するレ
ーザ溶接ができる。4) Effects of the invention As described above, in the present invention, one laser beam irradiated from a laser device is divided into two by a bifocal lens,
Since the laser beam is irradiated onto the part to be welded by focusing on two adjacent points, it becomes easy to adjust the minute energy, and a wide fusion zone is formed, making it possible to perform laser welding with sufficient strength.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図及び第２図は従来例を示す概略断面図、第３図及
び第４図は本発明を示す−で、第３醜は概略−１第４−
は概略断面図である。 ：（）１１１／１ 、；５２　ｋ４1 and 2 are schematic cross-sectional views showing the conventional example, and FIGS. 3 and 4 show the present invention.
is a schematic cross-sectional view. :()111/1, ;52 k4

Claims (1)

【特許請求の範囲】[Claims] （１）　　レーザー機器より照射される１つのレーザー
光を２焦点レンズにより２分割し、隣接する２点に焦点
をあわせて被溶接部にレーザー光を照射することを特徴
とするレーザー溶接法。(1) A laser welding method characterized by dividing one laser beam irradiated from a laser device into two parts using a bifocal lens, focusing on two adjacent points, and irradiating the welded part with the laser beam.
JP56173394A 1981-10-28 1981-10-28 Laser welding method Pending JPS5874294A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56173394A JPS5874294A (en) 1981-10-28 1981-10-28 Laser welding method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56173394A JPS5874294A (en) 1981-10-28 1981-10-28 Laser welding method

Publications (1)

Publication Number Publication Date
JPS5874294A true JPS5874294A (en) 1983-05-04

Family

ID=15959585

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56173394A Pending JPS5874294A (en) 1981-10-28 1981-10-28 Laser welding method

Country Status (1)

Country Link
JP (1) JPS5874294A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009251381A (en) * 2008-04-08 2009-10-29 Mitsubishi Electric Corp Laser irradiation device
WO2012007326A3 (en) * 2010-07-15 2012-06-21 Robert Bosch Gmbh Structural element for an injection valve with two connected components and method for producing said structural element
CN104690427A (en) * 2013-12-09 2015-06-10 宝马股份公司 Process for Influencing the Surface Condition of a Laser Weld Seam as well as a Component

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51128794A (en) * 1975-05-01 1976-11-09 Toshiba Corp Laser processing apparatus
JPS5439334A (en) * 1977-09-02 1979-03-26 Hitachi Ltd Welding device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51128794A (en) * 1975-05-01 1976-11-09 Toshiba Corp Laser processing apparatus
JPS5439334A (en) * 1977-09-02 1979-03-26 Hitachi Ltd Welding device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009251381A (en) * 2008-04-08 2009-10-29 Mitsubishi Electric Corp Laser irradiation device
WO2012007326A3 (en) * 2010-07-15 2012-06-21 Robert Bosch Gmbh Structural element for an injection valve with two connected components and method for producing said structural element
CN104690427A (en) * 2013-12-09 2015-06-10 宝马股份公司 Process for Influencing the Surface Condition of a Laser Weld Seam as well as a Component
US20150158122A1 (en) * 2013-12-09 2015-06-11 Bayerische Motoren Werke Aktiengesellschaft Process for Influencing the Surface Condition of a Laser Weld Seam as well as a Component
DE102013225260A1 (en) * 2013-12-09 2015-06-11 Bayerische Motoren Werke Aktiengesellschaft Method for influencing the surface condition of a laser weld seam and component
US10195691B2 (en) 2013-12-09 2019-02-05 Bayerische Motoren Werke Aktiengesellschaft Process for influencing the surface condition of a laser weld seam as well as a component

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