JPH0360874A - Seam welding method - Google Patents
Seam welding methodInfo
- Publication number
- JPH0360874A JPH0360874A JP1196180A JP19618089A JPH0360874A JP H0360874 A JPH0360874 A JP H0360874A JP 1196180 A JP1196180 A JP 1196180A JP 19618089 A JP19618089 A JP 19618089A JP H0360874 A JPH0360874 A JP H0360874A
- Authority
- JP
- Japan
- Prior art keywords
- plate member
- welding
- seam welding
- seam
- welded
- 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
- 238000003466 welding Methods 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 8
- 230000001678 irradiating effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 230000003685 thermal hair damage Effects 0.000 description 1
Landscapes
- Laser Beam Processing (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、異なる板厚の２枚の板部材をシーム溶接する
方法に関し、特に溶接部分における板部材間の段差を減
少させ得るようなシーム溶接方法に関する。Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a method of seam welding two plate members having different thicknesses, and in particular to a method for seam welding two plate members having different thicknesses, and in particular, a seam welding method that can reduce the level difference between the plate members at the welded portion. Regarding welding methods.
従来より、比較的小板厚の鋼板で部材を製作する場合に
、部材重量軽減の為板厚の異なる板部材の端部同士をシ
ーム溶接装置でシーム溶接することが広く行われている
。BACKGROUND ART Conventionally, when manufacturing a member using a steel plate having a relatively small thickness, it has been widely practiced to seam weld the ends of plate members having different thicknesses together using a seam welding device in order to reduce the weight of the member.
ところが、板厚の異なる板部材をシーム溶接して部材を
製作した場合、厚い方の板部材と薄い方の板部材の夫々
の溶接される部分の溶融速度の差により、第５図に示す
ように部材１００の溶接部１０１において厚い方の板部
材１０２の端部が薄い方の板部材１０３の上側に突出し
た段部１０１ａが形成される。However, when a member is manufactured by seam welding plate members of different thicknesses, due to the difference in melting speed of the welded parts of the thicker and thinner plate members, as shown in Figure 5. At the welded portion 101 of the member 100, a step portion 101a is formed in which the end of the thicker plate member 102 projects above the thinner plate member 103.
このように溶接部１０１に段部１０１ａが形成されると
、段部１０１ａにおいて応力集中を招き部材１００の強
度特に疲労強度が著しく低下するという問題がある。When the stepped portion 101a is formed in the welded portion 101 in this manner, there is a problem in that stress concentration occurs at the stepped portion 101a, and the strength, particularly the fatigue strength, of the member 100 is significantly reduced.
そこで、特公昭４９−３３８２号公報には、予め板部材
の溶接される部分を加工して薄くするとともに溶接前或
いは溶接の際に板部材を重ね合せた状態で溶接される部
分を加熱手段で加熱することにより、溶接部分における
段部の形成を防止し且つ溶接部分をなだらかな形状にす
るシーム溶接方法が提案されている。Therefore, in Japanese Patent Publication No. 49-3382, the part of the plate member to be welded is processed in advance to make it thinner, and the part to be welded with the plate members overlapped before or during welding is heated by heating means. A seam welding method has been proposed that prevents the formation of a step in the welded portion and gives the welded portion a gentle shape by heating.
しかしながら、上記特公昭４９−３３８２号公報に提案
されているシーム溶接方法では、溶接工程の前に板部材
を加工するための工程を設けねばならず溶接の能率が低
下するという問題がある。However, the seam welding method proposed in Japanese Patent Publication No. 49-3382 has a problem in that a step for processing the plate member must be provided before the welding step, which reduces welding efficiency.
また、加工の際に板部材に付着した切粉により、溶接電
流のスパークが起こるため溶接不良を招くという問題が
ある。Further, there is a problem in that chips adhering to the plate member during processing cause sparks of welding current, resulting in defective welding.
更に、溶接の前或いは溶接の際に、板部材を重ね合せた
状態で溶接される部分を加熱手段により加熱する場合、
加熱手段からの熱エネルギーが低密度であると加熱に要
する時間が長くなり溶接の能率が低下するとともに、薄
い方の板部材に熱損傷を招くという問題がある。Furthermore, before or during welding, if the part to be welded with the plate members overlapped is heated by a heating means,
If the thermal energy from the heating means has a low density, there is a problem that the time required for heating is long, the efficiency of welding is reduced, and the thinner plate members are caused thermal damage.
一方、溶接の際の加圧力を大きくしたり或いは厚い方の
板部材と薄い方の板部材とのランプ量を小さくすること
により溶接部の段差を減少させることも考えられるが、
その場合第６図に示すように溶接部１）１の薄い方の板
部材１）３側に凹部１）１ｂが形成され、溶接部の強度
が低下するという問題が解消されない。On the other hand, it is possible to reduce the step difference in the welded part by increasing the pressure during welding or by decreasing the ramp amount between the thicker plate member and the thinner plate member.
In this case, as shown in FIG. 6, a concave portion 1) 1b is formed on the thinner plate member 1) 3 side of the welded portion 1) 1, and the problem of lowering the strength of the welded portion remains unsolved.
本発明の目的は、溶接の能率を向上させ且つ溶接品質を
高め得るようなシーム溶接方法を提供することである。An object of the present invention is to provide a seam welding method that can improve welding efficiency and weld quality.
本発明に係るシーム溶接方法は、板厚の異なる２枚の板
部材の端部を重ね合せてシーム溶接する方法であって、
少なくとも厚い方の板部材の端部に高密度熱エネルギー
を照射して加熱しながらシーム溶接するものである。The seam welding method according to the present invention is a method of overlapping and seam welding the ends of two plate members having different thicknesses,
Seam welding is performed by irradiating at least the thicker end of the plate member with high-density thermal energy and heating it.
本発明に係るシーム溶接方法においては、厚い方の板部
材と薄い方の板部材の夫々の端部を重ね合せて溶接する
際に、少なくとも厚い方の板部材の端部に高密度熱エネ
ルギーを照射して加熱しながらシーム溶接するので、厚
い方の板部材の端部が溶融されるとともに電極部からの
加圧力により平滑化されて薄い方の板部材３に滑らかに
溶着する。In the seam welding method according to the present invention, when overlapping and welding the ends of a thicker plate member and a thinner plate member, high-density thermal energy is applied to at least the end of the thicker plate member. Since seam welding is performed while being irradiated and heated, the end of the thicker plate member is melted and smoothed by the pressure applied from the electrode section, so that it is smoothly welded to the thinner plate member 3.
このように溶接部がなだらかに形成されるので、溶接部
に応力集中を招くことがなく部材の強度が大幅に向上す
る。Since the welded portion is formed smoothly in this manner, stress concentration does not occur in the welded portion, and the strength of the member is significantly improved.
また、高密度熱エネルギーを用いることにより、厚い方
の板部材の端部に加工を施すことなく且つその端部を局
部的にして軟化させることが出来るので、切粉付着に起
因する溶接不良及び薄い方の板部材の熱損傷を防止する
ことが出来、溶接品質の向上を図ることが出来る。In addition, by using high-density thermal energy, it is possible to locally soften the ends of thicker plate members without processing them, thereby preventing welding defects caused by adhesion of chips. Heat damage to the thinner plate member can be prevented, and welding quality can be improved.
更に、厚い方の板部材の端部の前加工を省略出来、端部
を短時間に軟化させることが出来るので、溶接速度を高
め溶接の能率の向上を図ることが出来る。Furthermore, pre-processing of the end of the thicker plate member can be omitted and the end can be softened in a short time, so it is possible to increase welding speed and improve welding efficiency.
本発明に係るシーム溶接方法によれば、以上〔作用〕の
項で説明したように溶接の際に高密度熱エネルギーを厚
い方の板部材の端部に照射して加熱しながら溶接すると
いう簡単な方法で、部材の溶接部の溶接品質を高め得る
こと、溶接の能率の向上を図ることが出来ることなどの
効果が得られる。According to the seam welding method according to the present invention, as explained in the [Function] section above, during welding, high-density thermal energy is irradiated to the end of the thicker plate member and welding is performed while heating. With this method, it is possible to obtain effects such as being able to improve the welding quality of the welded portion of the member and improving the welding efficiency.
（実施例） 以下、本発明の実施例について図面に基いて説明する。(Example) Embodiments of the present invention will be described below with reference to the drawings.
本実施例は、第１図に示すように４ドアハードトツプ型
自動車のボディのセンターピラーインナｌを製作する際
のシーム溶接方法に本発明を適用したものである。In this embodiment, the present invention is applied to a seam welding method for manufacturing the center pillar inner l of the body of a four-door hardtop automobile as shown in FIG.
上記センターピラーインナｌは、その上部を構成する板
厚０．８ｍｍの冷間圧延鋼板からなる第１板部材２の端
部２ａと、その下部を構成する板厚１． ２ｍｍの熱間
圧延鋼板からなる第２板部材３の端部３ａとをシーム溶
接により接合して製作される。The center pillar inner 1 has an end portion 2a of a first plate member 2 made of a cold-rolled steel plate with a thickness of 0.8 mm constituting the upper portion thereof, and a plate thickness 1.0 mm constituting the lower portion thereof. It is manufactured by joining the end portion 3a of the second plate member 3 made of a 2 mm hot rolled steel plate by seam welding.
ここで、シーム溶接に用いられるシーム溶接装置１０に
ついて簡単に説明すると、第２図に示すように、上下動
可能な左右方向向きの回転入力軸１）の左端部には円板
上の上部電極１２が取付けられ、回転入力軸１）の上方
のアーム１３の左端部にはエアシリンダからなる加圧用
シリンダ１４が上下方向向きに設けられ、加圧シリンダ
１４のロッド１４ａは回転入力軸１）に装着された円筒
形の軸受部材１５に固着されている。Here, to briefly explain the seam welding device 10 used for seam welding, as shown in FIG. 12 is attached to the left end of the arm 13 above the rotation input shaft 1), a pressure cylinder 14 made of an air cylinder is provided vertically oriented, and the rod 14a of the pressure cylinder 14 is attached to the rotation input shaft 1). It is fixed to the mounted cylindrical bearing member 15.
一方、回転入力軸１）の下方のアーム１９には、円筒形
の軸支持部材１６が設けられ、軸支持部材１６に左右方
向向きに回転自在に設けられた枢支軸１７の左端部には
、円板状の下部電極１８が取付けられ、枢支軸１７はア
ーム１９内の回転入力軸で回転駆動可能になっている。On the other hand, a cylindrical shaft support member 16 is provided on the lower arm 19 of the rotation input shaft 1), and a left end portion of a pivot shaft 17 provided on the shaft support member 16 so as to be rotatable in the left-right direction , a disk-shaped lower electrode 18 is attached, and the pivot shaft 17 can be rotated by a rotation input shaft within the arm 19.
但し、上記シーム溶接装置１０それ自体は通常のシーム
溶接装置の一例を示すものにすぎず、これ以外に種々の
型式のものを適用可能である。However, the seam welding device 10 itself is merely an example of a normal seam welding device, and various other types can be applied.
上記軸受部材１５の下側部にはブラケッ）２０が設けら
れ、ブラケット２０にはＹＡＧレーザ−ビームを放射す
るレーザートーチ２１が設けられている。A bracket 20 is provided on the lower side of the bearing member 15, and the bracket 20 is provided with a laser torch 21 that emits a YAG laser beam.
上記第１板部材２と第２板部材３をシーム溶接する場合
には、まず第１板部材２の端部２ａの上側に第２板部材
３の端部３ａを重ね合せ、その状態で第２図に２点鎖線
で示すように上部電極１２と下部電極１８の間に左右方
向向きに配設し、加圧シリンダ１４の加圧力により端部
２ａと端部３ａとの重ね合せ部分を第３図に示すように
上部電極１２と下部電極１８で挟持する。この状態では
、レーザートーチ２１の先端部は第２板部材３の端部３
ａのコーナ部３ｂに対向した位置にある。When seam welding the first plate member 2 and the second plate member 3, first overlap the end 3a of the second plate member 3 over the end 2a of the first plate member 2, and in this state, As shown by the two-dot chain line in FIG. 2, the upper electrode 12 and the lower electrode 18 are disposed in the left-right direction, and the overlapping portion of the end portion 2a and the end portion 3a is As shown in FIG. 3, it is held between an upper electrode 12 and a lower electrode 18. In this state, the tip of the laser torch 21 is connected to the end 3 of the second plate member 3.
It is located at a position opposite to the corner portion 3b of a.
次に、レーザートーチ２１からレーザービーム２２を端
部３ａのコーナ部３ｂに向けて第３図に１点鎖線で示し
たように照射するとともに上部電極１２を第２図の矢印
で示す方向に回転させ下部電極１８を反対方向に等速で
回転させ上部電極１２から下部電極１８へ溶接電流を流
すと、第１板部材２と第２板部材３とは後方向に駆動さ
れながらその重ね合せ部分が後端から前端に亙って溶接
される。尚、溶接条件は電流値１５０００Ａ、加圧力５
００ｋｇｆ、溶接速度５０ｍｍ／ｓに設定されている。Next, the laser beam 22 is irradiated from the laser torch 21 toward the corner 3b of the end 3a as shown by the dashed line in FIG. 3, and the upper electrode 12 is rotated in the direction shown by the arrow in FIG. When the lower electrode 18 is rotated at a constant speed in the opposite direction and a welding current is passed from the upper electrode 12 to the lower electrode 18, the first plate member 2 and the second plate member 3 are driven backward and the overlapped portion thereof is welded from the rear end to the front end. The welding conditions are a current value of 15,000A, and a pressure of 5.
The welding speed was set to 00 kgf and 50 mm/s.
その際、レーザービーム２２により加熱され第３図に２
点鎖線で示したように短時間のうちに軟化した端部３ａ
のコーナ部３ｂは、第４図に示したように上部電極１２
からの加圧力により平滑化されて第１仮部材２の端部２
ａに溶接接合される。At that time, it is heated by the laser beam 22 and is shown in FIG.
The end portion 3a softened in a short time as shown by the dotted chain line.
As shown in FIG. 4, the corner portion 3b of
The end portion 2 of the first temporary member 2 is smoothed by the pressure from
It is welded to a.
このように、第１板部材２と第２仮部材３とはその溶接
部においてなだらかに接合されるので、センターピラー
インナ１の強度特に疲労強度の大幅な向上を図ることが
出来る。In this way, the first plate member 2 and the second temporary member 3 are smoothly joined at their welded portions, so that the strength, particularly the fatigue strength, of the center pillar inner 1 can be significantly improved.
また、レーザービーム２２の高密度エネルギーがは端部
３ａのコーナ部３ｂに局部的に照射されるので、薄い方
の板部材２に熱損傷を招くことがない。Further, since the high-density energy of the laser beam 22 is locally irradiated to the corner portion 3b of the end portion 3a, the thinner plate member 2 is not damaged by heat.
尚、上記レーザービーム２２にかえて、高密度エネルギ
ーであるプラズマビームを用いてもよい。Incidentally, instead of the laser beam 22 described above, a plasma beam having high density energy may be used.
更に、このシーム溶接装置１０及びシーム溶接方法は自
動車のボディ用の部材に限らず種々の板厚の異なる金属
板部材をシーム溶接するのに適用することが出来ること
は勿論である。Furthermore, it goes without saying that the seam welding device 10 and the seam welding method can be applied not only to parts for automobile bodies but also to seam welding various metal plate members having different plate thicknesses.
第１図〜第４図は本発明の実施例を示すもので、第１図
はセンターピラーインナの平面図、第２図はシーム溶接
装置の要部斜視図、第３図はシーム溶接装置の電極と板
部材の要部断面図、第４図はシーム溶接装置の電極と溶
接された板部材の要部断面図、第５図・第６図は夫々従
来技術に係るもので、第５図は板部材のシーム溶接部の
断面図、第６図は板部材のシーム溶接部の断面図である
。
２・・第１ｖｊ、部材、 ３・・第２板部材５、２ａ・
３ａ・・端部、 １０・・シーム溶接装置、２２・・レ
ーザービーム。Figures 1 to 4 show examples of the present invention. Figure 1 is a plan view of the center pillar inner, Figure 2 is a perspective view of the main parts of the seam welding device, and Figure 3 is the seam welding device. FIG. 4 is a cross-sectional view of a main part of an electrode and a plate member, FIG. 4 is a cross-sectional view of a main part of a plate member welded to an electrode of a seam welding device, and FIGS. 6 is a sectional view of the seam welded portion of the plate member, and FIG. 6 is a sectional view of the seam welded portion of the plate member. 2. 1st vj member, 3. 2nd plate member 5, 2a.
3a... End, 10... Seam welding device, 22... Laser beam.
Claims (1)
ーム溶接する方法であって、 少なくとも厚い方の板部材の端部に高密度熱エネルギー
を照射して加熱しながらシーム溶接することを特徴とす
るシーム溶接方法。(1) A method of overlapping and seam welding the ends of two plate members with different thicknesses, the seam welding being performed by irradiating at least the end of the thicker plate member with high-density thermal energy and heating it. A seam welding method characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1196180A JPH0360874A (en) | 1989-07-27 | 1989-07-27 | Seam welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1196180A JPH0360874A (en) | 1989-07-27 | 1989-07-27 | Seam welding method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0360874A true JPH0360874A (en) | 1991-03-15 |
Family
ID=16353532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1196180A Pending JPH0360874A (en) | 1989-07-27 | 1989-07-27 | Seam welding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0360874A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5343010A (en) * | 1991-04-09 | 1994-08-30 | Elpatronic Ag | Process for seam welding of sheet metal blanks |
| WO1996026037A1 (en) * | 1995-02-23 | 1996-08-29 | Toyota Jidosha Kabushiki Kaisha | Mush-seam welding method and mush-seam welding machine |
| JPH08229689A (en) * | 1993-12-15 | 1996-09-10 | Elpatronic Ag | Method for welding edge of sheet |
| EP1484130A1 (en) * | 2002-02-12 | 2004-12-08 | Kikuchi Co., Ltd. | Butt welder and butt welding method and butt welded product |
| US7423233B2 (en) | 2003-06-05 | 2008-09-09 | Sumitomo Metal Industries, Ltd. | Butt welding device and butt welding method |
| EP2039458A1 (en) | 2007-09-21 | 2009-03-25 | Malex S.A. | Method and device for butt-welding of sheets for a continuous manufacturing process. |
-
1989
- 1989-07-27 JP JP1196180A patent/JPH0360874A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5343010A (en) * | 1991-04-09 | 1994-08-30 | Elpatronic Ag | Process for seam welding of sheet metal blanks |
| JPH08229689A (en) * | 1993-12-15 | 1996-09-10 | Elpatronic Ag | Method for welding edge of sheet |
| WO1996026037A1 (en) * | 1995-02-23 | 1996-08-29 | Toyota Jidosha Kabushiki Kaisha | Mush-seam welding method and mush-seam welding machine |
| US5789718A (en) * | 1995-02-23 | 1998-08-04 | Toyota Jidosha Kabushiki Kaisha | Mash seam welding process and mash seam welding apparatus |
| USRE36612E (en) * | 1995-02-23 | 2000-03-14 | Toyota Jidosha Kabushiki Kaisha | Mash seam welding process and mash seam welding apparatus |
| EP1484130A4 (en) * | 2002-02-12 | 2006-04-12 | Kikuchi Co Ltd | Butt welder and butt welding method and butt welded product |
| EP1484130A1 (en) * | 2002-02-12 | 2004-12-08 | Kikuchi Co., Ltd. | Butt welder and butt welding method and butt welded product |
| EP1800788A1 (en) * | 2002-02-12 | 2007-06-27 | Kikuchi Co., Ltd. | Butt welding apparatus, butt welding method, and butt welded product |
| US7307235B2 (en) | 2002-02-12 | 2007-12-11 | Kikuchi Co., Ltd. | Butt welding apparatus, butt welding method, and butt welded product |
| US7423233B2 (en) | 2003-06-05 | 2008-09-09 | Sumitomo Metal Industries, Ltd. | Butt welding device and butt welding method |
| EP2039458A1 (en) | 2007-09-21 | 2009-03-25 | Malex S.A. | Method and device for butt-welding of sheets for a continuous manufacturing process. |
| WO2009037351A1 (en) * | 2007-09-21 | 2009-03-26 | Malex S.A. | Metal sheet butt-welding method and device for a continuous manufacturing process. |
| KR101523406B1 (en) * | 2007-09-21 | 2015-05-27 | 말렉스 에스.에이. | Metal sheet butt-welding method and device for a continuous manufacturing process |
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