JPS5868492A - Laser spot welder - Google Patents
Laser spot welderInfo
- Publication number
- JPS5868492A JPS5868492A JP56166721A JP16672181A JPS5868492A JP S5868492 A JPS5868492 A JP S5868492A JP 56166721 A JP56166721 A JP 56166721A JP 16672181 A JP16672181 A JP 16672181A JP S5868492 A JPS5868492 A JP S5868492A
- Authority
- JP
- Japan
- Prior art keywords
- laser beam
- rotating
- spot welding
- laser
- central axis
- 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
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
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/22—Spot welding
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はレーザー光線を用いてスポット溶接を行うレー
ザースポット溶接機に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a laser spot welding machine that performs spot welding using a laser beam.
従来のレーザースポット溶接機は、被溶接材の一点ｌこ
レーザー光線の焦点を結ばせて溶着させるので各一点の
スポット溶接直径が小さく強度が弱いのでレーザースポ
ット溶接の信頼性が低かった◇本発明は前記のもの化お
ける欠点を除去し、強度の高いレーザースポット溶接が
行えるようにしたレーザースポット溶接機を提供するこ
とを目的としてなされたもので、被溶接材を密着固定さ
せる部材のレーザー光源側に、反射鏡を配した回転部材
を設け、この回転部材は前記反射鏡に入射するレーザー
光線の中心軸を回転中心軸として回転させるとともに前
記反射鏡に反射して被溶接材に結ぶレーザー光線の焦点
の位置を前記回転中心軸からずらし、かつ、前記回転部
材を回転させる手段を備えたことを特徴とするものであ
る。Conventional laser spot welding machines focus the laser beam on one point on the material to be welded, so the spot welding diameter at each point is small and the strength is weak, so the reliability of laser spot welding is low. This was made with the aim of providing a laser spot welding machine that can perform high-strength laser spot welding by eliminating the drawbacks of the above-mentioned products. , a rotating member provided with a reflecting mirror is provided, and this rotating member rotates about the center axis of the laser beam incident on the reflecting mirror, and also determines the focal point position of the laser beam reflected by the reflecting mirror and connected to the workpiece. The rotating member is characterized by comprising means for shifting the rotating member from the rotational center axis and rotating the rotating member.
以下本発明を図面〈示す実施例により説明する。The present invention will be explained below with reference to the drawings and embodiments shown.
第１図、＠２図、および第３図において、レーザースポ
ット溶接機本体１は腕２および３を有し、継管４を介し
てレーザー光源５と接続されている。In FIGS. 1, 2, and 3, a laser spot welding machine main body 1 has arms 2 and 3, and is connected to a laser light source 5 via a joint 4.
腕２の上部には内部を冷却する活性ガスの供給孔６が設
けられ、腕２の端部には支持台７に固定された油圧シリ
ンダ８により上下移動する胴９が設けられている。この
胴９のモーター格納部１０には反射鏡を有する回転輸列
を回転させるモーター１０が設けられ、下部には被溶接
材押え金１２が城付けられている。また腕３の上部には
被溶接材受金１３が設けられ、受金１３の下部にはこの
受金１３を冷却する冷却水の供給孔１４Ａとその冷却水
の排出孔１４Ｂが設けられている。また第２図において
前記側９はそのガイド９Ａと腕２のガイド２Ａとで嵌合
している。The upper part of the arm 2 is provided with an active gas supply hole 6 for cooling the inside, and the end of the arm 2 is provided with a barrel 9 that is moved up and down by a hydraulic cylinder 8 fixed to a support base 7. A motor 10 for rotating a rotary train having a reflecting mirror is provided in a motor storage part 10 of the body 9, and a welding material presser foot 12 is attached to the lower part. Further, a welding material holder 13 is provided in the upper part of the arm 3, and a cooling water supply hole 14A for cooling the holder 13 and a cooling water discharge hole 14B are provided in the lower part of the holder 13. . Further, in FIG. 2, the guide 9A of the side 9 and the guide 2A of the arm 2 are fitted together.
つぎに第３図において、腕２の上端部に設置した支持台
７に油圧シリンダ８のシリンダチューブ８Ａが固定され
、その内部のピストン８Ｂのピストンロッド８Ｃｊこは
前記側９が取付けられでいる。Next, in FIG. 3, a cylinder tube 8A of a hydraulic cylinder 8 is fixed to a support stand 7 installed at the upper end of the arm 2, and a piston rod 8Cj of a piston 8B inside the cylinder tube 8A is attached to the side 9.
この胴９には支持板１５が腕２より突設され、腕２の内
部を通って来たレーザー光線を被溶接材押え金１２の方
向へ曲げる反射鏡１６が設けられている。A support plate 15 is provided on the body 9 so as to protrude from the arm 2, and a reflecting mirror 16 is provided for bending the laser beam passing through the inside of the arm 2 toward the welding material presser foot 12.
そして、この反射＠１６１こより曲げられたレーザー光
線を被溶接材１７Ａおよび１７Ｂに導いて焦点を結ばせ
るため、平面反射鏡１８および凹面反射鏡１９を有する
旋回銅銀が設けられている。この旋回銅銀は前記平面反
射鏡１８に入射するレーザー光線の中心軸を回転中心軸
として回転させるようになっている。そしてレーザー光
線が更に凹面反射鏡１９に反射して被溶接材１７Ａおよ
び１７Ｂに結ぶレーザー光線の焦点の位置２４Ａを前記
回転中心軸からずらしである。前記旋回胴Ｉは軸受２１
を介して押え金１２に取付けられ、旋回側照の周囲番ζ
設けられている歯車ηはモーター１１の軸に設けられて
いる歯車ると噛み合っていてモーター１１の回転速度を
溶接条件に合わせて設定する手段が備えられている。In order to guide and focus the laser beam bent from this reflection @161 onto the materials to be welded 17A and 17B, a rotating copper-silver having a flat reflecting mirror 18 and a concave reflecting mirror 19 is provided. This rotating copper/silver is adapted to rotate about the central axis of the laser beam incident on the plane reflecting mirror 18 as the central axis of rotation. The laser beam is further reflected by the concave reflecting mirror 19 and the focal point 24A of the laser beam, which is coupled to the welded materials 17A and 17B, is shifted from the rotation center axis. The rotating barrel I has a bearing 21
It is attached to the presser foot 12 through the
The provided gear η meshes with a gear provided on the shaft of the motor 11, and means is provided for setting the rotational speed of the motor 11 in accordance with the welding conditions.
押え金稔の先端番こは前記不活性ガスを排出する切欠き
スリン）２３が設けられている。The tip of the presser foot is provided with a notch 23 for discharging the inert gas.
つぎに、前述した実施例の作用について説明する。Next, the operation of the embodiment described above will be explained.
受金１３に被溶接材１７Ａ詔よび１７Ｂを軟量し、油圧
シリンダ８のポート８ｄより圧力油を供給してピストン
８Ｂを押す。それによって胴９をガイド９Ａおよび２Ａ
ｌこより案内して降下させ押え金１２を被溶接材１７
Ａ ｋよび１７Ｂに押し付ける。レーザー光源５番こよ
り継管４を通して炭酸ガスレーザーなどの強力なレーザ
ー光線を腕２の中に送り込み反射鏡１６により曲げて旋
回銅銀に設けた平面反射鏡１８および凹面反射鏡１９に
より反射し、被溶接材１７Ａ 、 １７Ｂの溶接位置２
４Ａに、焦点を結ばせる。The materials to be welded 17A and 17B are placed in the receiving metal 13, and pressure oil is supplied from the port 8d of the hydraulic cylinder 8 to push the piston 8B. Thereby guiding the torso 9 to 9A and 2A
The presser foot 12 is guided and lowered from the welding material 17.
Press onto A k and 17B. A powerful laser beam such as a carbon dioxide laser is sent into the arm 2 through the joint pipe 4 from the laser light source No. 5, is bent by the reflector 16, and is reflected by the plane reflector 18 and concave reflector 19 provided on the rotating copper-silver. Welding position 2 of welding materials 17A and 17B
Focus on 4A.
それによって、被溶接材１７Ａおよび１７Ｂの溶接位置
２４Ａが溶着する。As a result, welding positions 24A of the welded materials 17A and 17B are welded together.
モーター１１により歯車２１およびｎを回転させて旋回
胴頷を１８０°転回した位置１こすれば、レーザー光線
の焦点は溶接位置２４Ｂに結び被溶接材１７Ａおよび１
７Ｂの溶接位置２４Ｂが溶着する。このとき旋回銅銀の
回転速度は被溶接材１７Ａおよび１７Ｂのスポット溶接
を完成させながらレーザー光線の焦点が移動するように
設定するか、あるいは旋回胴Ｉの回転速度を高速にする
ことｋよってレーザー光線の焦点軌跡が一度に溶接され
るように設定する。When the gears 21 and n are rotated by the motor 11 and the rotating body nod is rotated by 180 degrees to position 1, the focus of the laser beam is focused on the welding position 24B, and welding materials 17A and 1 are rotated by the motor 11.
Welding position 24B of 7B is welded. At this time, the rotational speed of the rotating copper-silver is set so that the focal point of the laser beam moves while completing spot welding of the materials to be welded 17A and 17B, or the rotational speed of the rotating barrel I is set to be high. Set the focal locus to be welded at once.
なお、腕２の上部に設けた供給孔６から不活性ガスを供
給し押え金１２のスリン）２３から排出するようにして
胴１０の内部の反射鏡１６ 、１８および１９等を冷却
するとともに、被溶接材１７Ａｉ６よび１７Ｂの溶接位
置２５Ａを酸化から保護する。また受金１３の下部化設
けた供給孔１４Ａから冷却水を受金１３の内部へ供給し
、排出孔１４Ｂから排出するようにして受金１３が過熱
して溶けないように冷却する。Incidentally, inert gas is supplied from the supply hole 6 provided at the upper part of the arm 2 and discharged from the sulin 23 of the presser foot 12 to cool the reflectors 16, 18, 19, etc. inside the body 10, and The welding position 25A of the materials to be welded 17Ai6 and 17B is protected from oxidation. Also, cooling water is supplied into the inside of the receiver 13 from a supply hole 14A provided in the lower part of the receiver 13, and is discharged from the discharge hole 14B to cool the receiver 13 so that it does not overheat and melt.
前述した実施例によれば、レーザー光線を集光して被溶
接材１７Ａおよび１７Ｂを密着固定させる押え金１２の
レーザー光源側に、反射鏡１８および１９を配した旋回
胴囲を設け、この旋回胴囲は前記反射鏡１８に入射する
レーザー光線の中心軸を回転中心軸として回転させると
ともに前記反射鏡１９に反射して被溶接材１７Ａおよび
１７Ｂに結ぶレーザー光線の焦点の位置２４Ａを前記回
転中心軸からずらし、かつ、前記旋回胴囲を回転させる
歯車２２．２３およびモーター１１を備えた簡単な構成
により被溶接材１７Ａおよび１７Ｂの各スポット溶接点
が円形の線状化形成されるので、各スポット溶接点の強
度が高く、スポット溶接の信頼性の高いものである。According to the above-mentioned embodiment, a rotating body with reflecting mirrors 18 and 19 arranged thereon is provided on the laser light source side of the presser foot 12 which condenses a laser beam and tightly fixes the materials to be welded 17A and 17B. The enclosure is rotated around the central axis of the laser beam incident on the reflecting mirror 18, and the focal point 24A of the laser beam reflected on the reflecting mirror 19 and connected to the workpieces 17A and 17B is shifted from the rotational center axis. , and each spot welding point of the materials to be welded 17A and 17B is formed into a circular linear shape by a simple configuration including the gears 22, 23 and the motor 11 for rotating the rotating girth, so that each spot welding point It has high strength and is highly reliable for spot welding.
本発明の他の実施例は第４図において、前記旋回胴２０
＃こ平面反射鏡１８Ａおよび１８Ｂとレンズ％を設けた
ものである。そして、他の部分は第１図ないし第３図の
実施例と同様である。Another embodiment of the present invention is shown in FIG.
This is provided with flat reflecting mirrors 18A and 18B and a lens. The other parts are the same as the embodiment shown in FIGS. 1 to 3.
この実施例の作用は、旋回胴囲はレンズあを通り平面反
射鏡１８Ａに入射するレーザー光線の中心軸を回転中心
軸として回転させる。そしてレーザー光線は更に平面反
射鏡１８Ｂに反射して被溶接材１７Ａおよび１７Ｂに焦
点を結ぶ。しかしレーザー光線の焦点の位置２４Ａは前
記回転中心軸からずれているので、旋回胴囲の回転によ
りレーザー光線の焦点は被溶接材に円形の軌跡を画く。The function of this embodiment is that the rotating body rotates about the central axis of the laser beam that passes through the lens and enters the plane reflecting mirror 18A. The laser beam is further reflected by the plane reflecting mirror 18B and focused on the welded materials 17A and 17B. However, since the position 24A of the focal point of the laser beam is shifted from the rotation center axis, the focal point of the laser beam draws a circular locus on the workpiece due to the rotation of the rotating girth.
本発明の更に他の実施例は、第５図において、第４図の
実施例における反射鏡をプリズムに置換えたものであっ
て反射面は２７Ａおよび２７Ｂである。Still another embodiment of the present invention is shown in FIG. 5, in which the reflecting mirror in the embodiment of FIG. 4 is replaced with a prism, and the reflecting surfaces are 27A and 27B.
この実施例の作用は第４図の実施例と同様である。The operation of this embodiment is similar to that of the embodiment of FIG.
以上説明したように本発明に係るレーザースポット溶接
機は、被溶接材を密着固定させる部材のレーザー光源側
に、反射鏡を配した回転部材を設け、この回転部材は前
記反射鏡〈入射するレーザー光線の中心軸を回転中心軸
として回転させるとともに前記反射鏡に反射して被溶接
材に結ぶレーザー光線の焦点の位置を前記回転中心軸か
らずらし、かつ、前記回転部材を回転させる手段を備え
たので、容易に被溶接材の各スポット溶接点が円形線状
に形成され、各スポット溶接点の強度が大きく、信頼性
の高いスポット溶接ができる。As explained above, the laser spot welding machine according to the present invention is provided with a rotating member having a reflecting mirror on the laser light source side of the member that closely fixes the workpiece to be welded, and this rotating member is connected to the reflecting mirror. The rotary member is rotated about the central axis of the rotating member, and the focal point of the laser beam reflected by the reflecting mirror and connected to the workpiece is shifted from the central axis of rotation, and the rotating member is rotated. Each spot welding point of the material to be welded can be easily formed in a circular line shape, and each spot welding point has high strength, allowing highly reliable spot welding.
図面は本発明のレーザースポット溶接機の実施例を示す
もので、第１図は一実施例の正面図、第２図は一実施例
の水平断面部分図、第３図は一実施例の縦断正量部分図
、第４図は他の実施例の旋回胴部分の縦断面図、第５図
は更正こ他の実施例の旋回胴番こ配するプリズム及びレ
ンズの縦断面図である。
１・・・レーザースポット溶接機本体、２・・・腕、３
・・・腕、４・・・継管、５・・・レーザー光源、６・
・・供給孔、７・・・支持台、８・・・油圧シリンダ、
８Ａ・・・シリンダチューブ、８Ｂ・・・ピストン、８
Ｃ・・・ピストンロッド、８ｄ・・・ポート、９・・・
胴、１０・・・格納部、１１・・・モーター、１２・・
・被溶接材押え金、１３・・・被溶接材受金、１４Ａ・
・・冷却水の供給孔、１４Ｂ・・・冷却水の排出孔、１
５・・・支持板、１６・・・反射鏡、１７Ａ、Ｂ・・・
被溶接材、１８・・・平面反射鏡、１９・・・凹面反射
鏡、加・・・旋回胴、４・・・軸受、ｎ・・・歯車、る
・・・切欠きスリン）、Ｚ４Ａ、Ｂ・・・溶接位置、２
５Ａ・・・溶接位置、が・・・レンズ、２７Ａ、Ｂ・・
・反射面。The drawings show an embodiment of the laser spot welding machine of the present invention, FIG. 1 is a front view of one embodiment, FIG. 2 is a partial horizontal cross-sectional view of one embodiment, and FIG. 3 is a vertical cross-section of one embodiment. FIG. 4 is a vertical cross-sectional view of a rotating barrel portion of another embodiment, and FIG. 5 is a vertical cross-sectional view of a prism and a lens on which the rotating barrel is arranged in another embodiment including correction. 1... Laser spot welding machine body, 2... Arm, 3
... Arm, 4... Joint pipe, 5... Laser light source, 6.
... Supply hole, 7... Support stand, 8... Hydraulic cylinder,
8A...Cylinder tube, 8B...Piston, 8
C... Piston rod, 8d... Port, 9...
Body, 10... Storage part, 11... Motor, 12...
・Welded material presser foot, 13... Welded material receiver, 14A・
...Cooling water supply hole, 14B...Cooling water discharge hole, 1
5...Support plate, 16...Reflector, 17A, B...
Material to be welded, 18...Flat reflecting mirror, 19...Concave reflecting mirror, Machining...Swivel body, 4...Bearing, n...Gear, r...Notch sulin), Z4A, B...Welding position, 2
5A... Welding position,... Lens, 27A, B...
・Reflective surface.
Claims (1)
１反射鏡を配した回転部材を設け、この回転部材は前記
反射鏡に入射するレーザー光線の中心軸を回転中心軸と
して回転させるとともに前記反射鏡に反射して被溶接材
に結ぶレーザー光線の焦点の位置を前記回転中心軸から
ずらし、かつ、前記回転部材を回転させる手段を備えた
ことを特徴とするレーザースポット溶接機。 ２、被溶接材のスポット溶接を完成させながらレーザー
光線の焦点が移動するように、前記回転部材の回転速度
を設定する手段を備えたことを特徴とする特許請求の範
囲第１項記載のレーザースポット溶接機。 ３、レーザー光線の焦点が同じ軌跡を繰り返し画くよう
に高速移動させて被溶接材の前記レーザー光線の焦点軌
跡を一度に溶接するよう化前記回転部材を高速回転させ
る手段を備えたことを特徴とする特許請求の範囲第１項
記載のレーザースポット溶接機。 ４、前記被溶接材のスポット溶接をするレーザー光線の
焦点が同じ軌跡を繰り返し画くように移動させる前記回
転部材の回転速度を低速から高速道調整する手段を備え
たことを特徴とする特許請求の範囲第１項記載のレーザ
ースポット溶接機。[Scope of Claims] 1. A rotating member with a reflecting mirror arranged on the laser light source side of the member that tightly fixes the workpiece to be welded is provided, and this rotating member has a central axis of rotation that is aligned with the central axis of the laser beam incident on the reflecting mirror. A laser spot welding machine characterized in that the laser spot welding machine is equipped with means for rotating the rotating member, shifting the focal point of the laser beam reflected by the reflecting mirror and connecting to the workpiece from the rotation center axis, and rotating the rotating member. . 2. The laser spot according to claim 1, further comprising means for setting the rotational speed of the rotating member so that the focal point of the laser beam moves while completing spot welding of the material to be welded. Welding machine. 3. A patent characterized in that the invention comprises means for rotating the rotating member at high speed so that the focal point of the laser beam moves at high speed so as to repeatedly draw the same locus so that the focal locus of the laser beam on the workpiece is welded all at once. A laser spot welding machine according to claim 1. 4. The invention further comprises means for adjusting the rotational speed of the rotating member from low to high speed so that the focal point of the laser beam for spot welding the materials to be welded repeatedly follows the same trajectory. The laser spot welding machine according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56166721A JPS5868492A (en) | 1981-10-19 | 1981-10-19 | Laser spot welder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56166721A JPS5868492A (en) | 1981-10-19 | 1981-10-19 | Laser spot welder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5868492A true JPS5868492A (en) | 1983-04-23 |
Family
ID=15836517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56166721A Pending JPS5868492A (en) | 1981-10-19 | 1981-10-19 | Laser spot welder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5868492A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6021190A (en) * | 1983-06-24 | 1985-02-02 | シヤ−キ・エス・ア | Spot welding by laser beam |
| JPS60234786A (en) * | 1984-05-01 | 1985-11-21 | アブコウ・コ−ポレイシヨン | Welding method and device |
| JPS6163392A (en) * | 1984-08-20 | 1986-04-01 | フイアツト・アウト・ソシエタ・ペル・アチオーニ | Method and device for welding sheet metal |
| EP0160293B1 (en) * | 1984-05-03 | 1989-06-28 | Cincinnati Milacron Inc. | Laser welding system and apparatus |
| WO1998006534A1 (en) * | 1996-08-13 | 1998-02-19 | Rofin-Sinar Laser Gmbh | Device for connecting two components by welding |
| KR20020056496A (en) * | 2000-12-29 | 2002-07-10 | 이계안 | A Laser Beam Welding Method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5647289A (en) * | 1979-09-28 | 1981-04-28 | Hitachi Ltd | Laser beam welding rotary head |
-
1981
- 1981-10-19 JP JP56166721A patent/JPS5868492A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5647289A (en) * | 1979-09-28 | 1981-04-28 | Hitachi Ltd | Laser beam welding rotary head |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6021190A (en) * | 1983-06-24 | 1985-02-02 | シヤ−キ・エス・ア | Spot welding by laser beam |
| JPS60234786A (en) * | 1984-05-01 | 1985-11-21 | アブコウ・コ−ポレイシヨン | Welding method and device |
| JPH0510196B2 (en) * | 1984-05-01 | 1993-02-09 | Avco Corp | |
| EP0160293B1 (en) * | 1984-05-03 | 1989-06-28 | Cincinnati Milacron Inc. | Laser welding system and apparatus |
| JPS6163392A (en) * | 1984-08-20 | 1986-04-01 | フイアツト・アウト・ソシエタ・ペル・アチオーニ | Method and device for welding sheet metal |
| WO1998006534A1 (en) * | 1996-08-13 | 1998-02-19 | Rofin-Sinar Laser Gmbh | Device for connecting two components by welding |
| KR20020056496A (en) * | 2000-12-29 | 2002-07-10 | 이계안 | A Laser Beam Welding Method |
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