JP3267361B2 - Method of welding automotive body parts - Google Patents
Method of welding automotive body partsInfo
- Publication number
- JP3267361B2 JP3267361B2 JP35254392A JP35254392A JP3267361B2 JP 3267361 B2 JP3267361 B2 JP 3267361B2 JP 35254392 A JP35254392 A JP 35254392A JP 35254392 A JP35254392 A JP 35254392A JP 3267361 B2 JP3267361 B2 JP 3267361B2
- Authority
- JP
- Japan
- Prior art keywords
- sheet metal
- flange portion
- metal member
- flange
- welding
- 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.)
- Expired - Fee Related
Links
Landscapes
- Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
- Laser Beam Processing (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、自動車の車体部材即ち
フレーム，ピラー等のボックス型断面部材の溶接方法に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for welding a vehicle body member, that is, a box-shaped section member such as a frame or a pillar.
【０００２】[0002]
【従来の技術】自動車のフレーム，ピラー等は、２つの
板金部材を溶接固着してボックス断面構造に構成するも
のであるが、従来は図３に示すように、各板金部材ａ，
ｂの端縁部にそれぞれフランジ部ａ′，ｂ′を形成し、
これらのフランジ部ａ′，ｂ′を接合しスポット溶接機
ｃにてスポット溶接してボックス型断面部材を構成する
のが普通であった。スポット溶接の代りにレーザ溶接を
用いることにより上記フランジ部ａ′，ｂ′を省略して
軽量化をはかろうとすると、量産ラインでは溶接部のテ
ィーチング精度が悪くレーザビームが正確に溶接部をな
ぞることができないという欠点があり、従来はレーザ溶
接を用いる場合でもフランジ部ａ′，ｂ′を接合しその
２枚のフランジ部を一対のローラで挟持して移動させつ
つその２枚のフランジ部の合わせ面にレーザビームを入
射して溶接する、という方法を採っている（特開昭５８
−１０３９８８号公報参照）。2. Description of the Related Art A frame, a pillar, and the like of an automobile are formed by welding and fixing two sheet metal members to form a box sectional structure. Conventionally, as shown in FIG.
b, flange portions a 'and b' are formed at the edge portions, respectively,
Usually, these flange portions a 'and b' are joined and spot-welded by a spot welder c to form a box-shaped cross section member. If it is attempted to reduce the weight by omitting the flange portions a 'and b' by using laser welding instead of spot welding, the teaching accuracy of the welding portion is poor in a mass production line, and the laser beam accurately traces the welding portion. Therefore, even when laser welding is conventionally used, the flange portions a 'and b' are joined, and the two flange portions are pinched and moved by a pair of rollers while moving the two flange portions. A method is adopted in which a laser beam is incident on the mating surface to perform welding.
-103988 gazette).
【０００３】[0003]
【発明が解決しようとする課題】上記のように接合され
た２枚のフランジ部の合わせ面にレーザビームを入射し
て溶接するという従来のレーザ溶接方法では、スポット
溶接を単にレーザ溶接に代えたというだけであって、フ
レームやピラー等のボックス型断面部材の軽量化をはか
ることはできない、という課題を有している。In the conventional laser welding method in which a laser beam is incident on the mating surface of the two flange portions joined as described above and welding is performed, spot welding is simply replaced with laser welding. However, there is a problem that it is not possible to reduce the weight of the box-shaped section member such as the frame and the pillar.
【０００４】本発明は上記のような従来の課題に対処す
ることを目的とするものである。[0004] It is an object of the present invention to address the conventional problems as described above.
【０００５】[0005]
【課題を解決するための手段】本発明は、２つの板金部
材よりなるボックス型断面部材において、一方の板金部
材にのみ該一方の板金部材の長手方向に連続するフラン
ジ部を形成して他方の板金部材にはフランジ部を設け
ず、上記一方の板金部材のフランジ部に他方の板金部材
の端縁部を突き合わせ、該フランジ部をレーザ溶接のな
ぞり用レールとして利用し、なぞりセンサが該フランジ
部上をなぞりながら溶接部（即ち他方の板金部材端縁部
の突き合わせ部）位置を検出しレーザ溶接機の位置を修
正しつつ、上記溶接部を連続的にレーザ溶接してボック
ス型断面部材よりなる自動車車体部材を構成することを
特徴とするものである。According to the present invention, in a box-shaped cross-section member composed of two sheet metal members, only one of the sheet metal members has a flange portion continuous in the longitudinal direction of the one sheet metal member. The other sheet metal member is not provided with a flange portion, but the edge of the other sheet metal member is abutted against the flange portion of the one sheet metal member, and the flange portion is used as a tracing rail for laser welding. A sensor detects the position of the welded portion (i.e., abutting portion of the edge of the other sheet metal member) while tracing on the flange portion and corrects the position of the laser welding machine, and continuously laser-welds the welded portion to form a box. The present invention is characterized in that an automobile body member composed of a mold section member is formed.
【０００６】[0006]
【作用】上記のように、２つの板金部材のうちの一方の
板金部材にのみ形成したフランジ部をなぞり用レールと
して利用することにより、レーザビームが正確に溶接部
に入射するよう制御でき、量産ラインで高い精度のレー
ザ溶接が可能となり、又片側の板金部材にはフランジ部
を設けないことにより、ボックス型断面部材の軽量化を
はかることができる。更に又、一方の板金部材に設けた
長手方向に連続するフランジ部は、ガラスやウエザスト
リップ或はトリム等の取付ベースとして利用でき、且つ
該フランジ部の幅を利用して他方の板金部材の端縁部の
突き合わせ位置をフランジ部の先端に近い位置とするこ
とにより、ボックス型断面部材の断面拡大をもはかるこ
とが可能となる。As described above, by using the flange formed on only one of the two sheet metal members as the tracing rail, the laser beam can be controlled so as to be accurately incident on the welded portion, and mass production can be achieved. High-precision laser welding can be performed on the line, and the weight of the box-shaped cross-sectional member can be reduced by not providing a flange portion on one sheet metal member. Furthermore, it is provided on one sheet metal member.
The flange portion that is continuous in the longitudinal direction can be used as a mounting base for glass, weather strip, trim, or the like, and the abutting position of the edge of the other sheet metal member is determined by using the width of the flange portion. By setting the position near the front end, it becomes possible to enlarge the cross section of the box-shaped cross-sectional member.
【０００７】[0007]
【実施例】以下本発明の実施例を図１及び図２を参照し
て説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.
【０００８】図１において、１は自動車車体のフレー
ム，ピラー等のボックス型断面部材であり、該ボックス
型断面部材１は、２つの板金部材２，３をレーザ溶接に
て固着することにより構成されるが、本発明では図１
（Ａ）に示すように、一方の板金部材２の端縁部にのみ
長手方向に連続するフランジ部２ａ，２ａを形成し、他
方の板金部材３にはフランジ部を設けず、該他方の板金
部材３の端縁部３ａ，３ａを上記一方の板金部材２のフ
ランジ部２ａ，２ａに直接突き合わせ、その突き合わせ
部をレーザ溶接機４にてレーザ溶接してボックス型断面
部材１を構成するものである。In FIG. 1, reference numeral 1 denotes a box-shaped cross-sectional member such as a frame or a pillar of an automobile body. The box-shaped cross-sectional member 1 is formed by fixing two sheet metal members 2 and 3 by laser welding. However, in the present invention, FIG.
As shown in (A), only at the edge of one sheet metal member 2
Flanges 2a, 2a that are continuous in the longitudinal direction are formed, the other sheet metal member 3 is not provided with a flange, and the edge 3a, 3a of the other sheet metal member 3 is connected to the flange of the one sheet metal member 2. The box-shaped cross section member 1 is formed by directly butting against 2a and 2a, and the butted portion is laser-welded by a laser welding machine 4.
【０００９】レーザ溶接は、図１（Ｂ）に示すように、
一方の板金部材２のフランジ部２ａを溶接精度を出すた
めのなぞりレールとして利用し、レーザ溶接機４と一体
的に移動するなぞりセンサ５で該フランジ部２ａをなぞ
りながら溶接位置を検出してレーザビーム４ａが正確に
溶接部をなぞるように制御する。[0009] As shown in FIG.
The flange portion 2a of one of the sheet metal members 2 is used as a tracing rail for improving welding accuracy, and a tracing sensor 5 that moves integrally with the laser welding machine 4 detects a welding position while tracing the flange portion 2a and performs laser processing. The beam 4a is controlled so as to accurately trace the weld.
【００１０】更に詳しく説明すると、溶接部（フランジ
部２ａと他方の板金部材３の端縁部３ａとの突き合わせ
部）に、ティーチングによって移動させたレーザ溶接ロ
ボットのアームを移動させ、更に溶接位置精度を高める
ために、アームに取付けられたなぞりセンサ５がフラン
ジ部２ａ上をなぞりながら他方の板金部材３の端縁部３
ａを詳細に検出してレーザ溶接ロボットのアームの位置
を修正しつつ移動し、溶接部に正確にレーザビーム４ａ
を入射して連続溶接を行ない、ボックス型断面部材１を
製作するものである。More specifically, the arm of the laser welding robot, which has been moved by teaching, is moved to a welded portion (a portion where the flange portion 2a and the edge 3a of the other sheet metal member 3 abut). The tracing sensor 5 attached to the arm traces the edge 3 of the other sheet metal member 3 while tracing on the flange 2a.
a is detected in detail and moves while correcting the position of the arm of the laser welding robot, so that the laser beam 4a
And a box-shaped section member 1 is manufactured by performing continuous welding.
【００１１】このようにして構成されたボックス型断面
部材１は、２つの板金部材にフランジ部を形成しフラン
ジ部どうしを接合固着してボックス型断面部材を構成し
た従来のものに比し、２つの板金部材２，３のうちの片
側３にはフランジ部が省略されているので、少なくとも
その分だけ軽量化され、且つ一方の板金部材２に形成さ
れるフランジ部２ａはスポット溶接用ではなく、例えば
図１に示すようにガラス６やウエザストリップ７或は又
トリム等の取付ベースとして利用するものであるから、
該フランジ部２ａの幅は取付けるべきものに応じて自由
に設定でき、取付けるべきものによっては該フランジ部
２ａの幅を小として更に軽量化をはかったり、図２に示
すようにフランジ部２ａの幅を利用して他方の板金部材
３の端縁部３ａをフランジ部２ａの先端に近い位置にレ
ーザ溶接することにより、従来のフランジ部どうしの接
合固着構造のもの（鎖線示）に比し、断面の拡大をはか
る等、フランジ部を有効的に活用することが可能とな
る。The box-shaped cross-section member 1 thus constructed is two times thicker than a conventional box-shaped cross-section member in which a flange is formed on two sheet metal members and the flanges are joined and fixed to each other. Since the flange portion is omitted on one side 3 of the two sheet metal members 2 and 3, the weight is reduced by at least that much, and the flange portion 2a formed on one sheet metal member 2 is not for spot welding, For example, as shown in FIG. 1, it is used as a mounting base for glass 6, weather strip 7, or trim.
The width of the flange portion 2a can be freely set according to what is to be mounted, and depending on what is to be mounted, the width of the flange portion 2a can be reduced to further reduce the weight, or as shown in FIG. By laser welding the edge 3a of the other sheet metal member 3 to a position near the tip of the flange 2a, the cross section is smaller than that of a conventional flange-to-flange joint-fixed structure (shown by a chain line). It is possible to effectively utilize the flange portion, for example, by enlarging the flange.
【００１２】尚、図１において６ａはガラス６をフラン
ジ部２ａに接合固着する接着剤であり、図２において８
はトリムである。In FIG. 1, reference numeral 6a denotes an adhesive for bonding and fixing the glass 6 to the flange portion 2a.
Is trim.
【００１３】[0013]
【発明の効果】以上のように本発明によれば、２つの板
金部材の固着により構成されるフレーム，ピラー等のボ
ックス型断面部材において、２つの板金部材のうちの一
方の板金部材の端縁部にのみ長手方向に連続するフラン
ジ部を形成して他方の板金部材にはフランジ部を形成せ
ず、このフランジ部を形成しない側の板金部材の端縁部
を上記一方の板金部材のフランジ部に突き合わせ、該フ
ランジ部をレーザ溶接用のなぞり用のレールとして利用
し、なぞりセンサが該フランジ部をなぞりつつ上記突き
合わせ部の位置を即ち溶接位置を検出しレーザビームが
正確に該溶接部に入射するよう制御してレーザ溶接する
ようにしたことにより、量産ラインで精度の高いレーザ
溶接が可能となり、片側の板金部材のフランジ部をなく
したことによってボックス型断面部材の軽量化をはかる
ことができ、更に上記一方の板金部材に設けた長手方向
に連続するフランジ部はレーザ溶接のなぞり用レールと
しての機能だけでなくガラスやウエザストリップやトリ
ム等の取付ベースとして機能し、且つ該フランジ部の幅
を利用して断面拡大をもはかることができるもので、実
用上多大の効果をもたらし得るものである。As described above, according to the present invention, in a box-shaped cross section member such as a frame or a pillar formed by fixing two sheet metal members, an edge of one of the two sheet metal members. The flange portion is formed on the other sheet metal member while forming a flange portion that is continuous in the longitudinal direction only on the portion.
Not, butt edge portion of the plate member on the side where this does not form a flange portion to the flange portion of one of the sheet metal member above, utilizing the flange portion as a rail for the tracing of laser welding, tracing sensor the flange portion By tracing the position of the butted portion while tracing the position, that is, detecting the welding position and controlling the laser beam so that it is accurately incident on the welded portion so as to perform laser welding, high-precision laser welding can be performed in a mass production line. By eliminating the flange portion of one of the sheet metal members, the weight of the box-shaped cross-sectional member can be reduced, and the longitudinal direction provided on the one sheet metal member can be further reduced.
The flange part which is continuous not only functions as a tracing rail for laser welding, but also functions as a mounting base for glass, weather strips, trims, etc., and it is possible to expand the cross section using the width of the flange part. It is possible and can bring a great effect practically.
【図１】本発明の実施例を示すもので、（Ａ）はボック
ス型断面部材を構成する２つの板金部材の断面図、
（Ｂ）は（Ａ）に示す２つの板金部材をレーザ溶接する
状態を説明する斜視図である。FIG. 1 shows an embodiment of the present invention, in which (A) is a sectional view of two sheet metal members constituting a box-shaped sectional member,
(B) is a perspective view explaining the state where two sheet metal members shown in (A) are laser-welded.
【図２】本発明方法にて構成したボックス型断面部材の
一例を示す断面図である。FIG. 2 is a cross-sectional view showing an example of a box-shaped cross-sectional member formed by the method of the present invention.
【図３】従来のボックス型断面部材構成例を示す断面図
である。FIG. 3 is a cross-sectional view showing a conventional box-type cross-sectional member configuration example.
１ ボックス型断面部材 ２ 板金部材 ２ａ フランジ部 ３ 板金部材 ３ａ 端縁部 ４ レーザ溶接機 ５ なぞりセンサ ６ ガラス ７ ウエザストリップ ８ トリム DESCRIPTION OF SYMBOLS 1 Box-shaped sectional member 2 Sheet metal member 2a Flange part 3 Sheet metal member 3a Edge 4 Laser welding machine 5 Tracing sensor 6 Glass 7 Weather strip 8 Trim
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B23K 26/00 B23K 26/04 B62D 65/00 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. 7 , DB name) B23K 26/00 B23K 26/04 B62D 65/00
Claims (1)
の端縁部にのみ上記一方の板金部材の長手方向に連続す
るフランジ部を形成し、フランジ部を設けない方の板金
部材の端縁部を上記一方の板金部材のフランジ部に突き
合わせ、該フランジ部をレーザ溶接用なぞりセンサがな
ぞりつつフランジ部と上記フランジ部を設けない方の板
金部材の端縁部との突き合わせ部の位置を検出しレーザ
ビームが該突き合わせ部に正確に入射するようレーザ溶
接機の位置を修正してレーザ溶接を行ない、ボックス型
断面部材よりなる自動車車体部材を構成することを特徴
とする自動車車体部材の溶接方法。A first sheet metal member extending in a longitudinal direction of the one sheet metal member only at an edge portion of the one sheet metal member;
A flange portion is formed, and an edge of the sheet metal member having no flange portion is abutted against the flange portion of the one sheet metal member, and the flange portion and the flange portion are traced by the tracing sensor for laser welding. Detecting the position of the butted portion with the edge of the sheet metal member not provided with the laser beam, correcting the position of the laser welding machine so that the laser beam is accurately incident on the butted portion, performing laser welding, and forming a box-shaped cross-section member A method for welding an automobile body member, comprising forming an automobile body member comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35254392A JP3267361B2 (en) | 1992-12-10 | 1992-12-10 | Method of welding automotive body parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35254392A JP3267361B2 (en) | 1992-12-10 | 1992-12-10 | Method of welding automotive body parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06179086A JPH06179086A (en) | 1994-06-28 |
| JP3267361B2 true JP3267361B2 (en) | 2002-03-18 |
Family
ID=18424783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35254392A Expired - Fee Related JP3267361B2 (en) | 1992-12-10 | 1992-12-10 | Method of welding automotive body parts |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3267361B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2716956B2 (en) * | 1995-10-31 | 1998-02-18 | 三菱自動車工業株式会社 | Manufacturing method of automobile outer panel |
-
1992
- 1992-12-10 JP JP35254392A patent/JP3267361B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06179086A (en) | 1994-06-28 |
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