JP2783490B2 - Manufacturing method of collective blank members - Google Patents
Manufacturing method of collective blank membersInfo
- Publication number
- JP2783490B2 JP2783490B2 JP5015531A JP1553193A JP2783490B2 JP 2783490 B2 JP2783490 B2 JP 2783490B2 JP 5015531 A JP5015531 A JP 5015531A JP 1553193 A JP1553193 A JP 1553193A JP 2783490 B2 JP2783490 B2 JP 2783490B2
- Authority
- JP
- Japan
- Prior art keywords
- plate
- blank member
- manufacturing
- collective
- 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
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Laser Beam Processing (AREA)
- Heat Treatment Of Articles (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【産業上の利用分野】本発明は、複数の板材同士を互い
に溶接して構成された集合ブランク部材の製造方法に関
する。The present invention relates to a process for the preparation of a plurality of plates between each other weld to configured set blank member.
【０００２】[0002]
【従来の技術】例えば、自動車車体の構成部品であるサ
イドパネル等を成形する場合、複数の板材同士の端部を
突き合わせ、その突き合わせ縁を溶接して素材平板を得
た後、この素材平板を所望の構成部品形状に沿ってプレ
ス成形することが行われている（特公昭４４−２４７６
３号公報参照）。2. Description of the Related Art For example, when forming a side panel or the like, which is a component part of an automobile body, a plurality of plate members are butted against each other, and the butted edges are welded to obtain a flat material plate. Press forming is performed according to a desired component shape (Japanese Patent Publication No. 44-2476).
No. 3).
【０００３】ところで、この種のプレス成形に際して、
板材同士の溶接端部を含む板材周縁部が伸びフランジ成
形となり、該プレス成形時に前記板材周縁部に応力集中
に起因して亀裂等が発生することがある。このため、実
開平３−２４３７１号に開示されているように、各鋼板
の接合端部を予め突状片に構成し、溶接後に該突状片を
切り欠いて除去部を形成することにより、プレス成形時
の応力集中を緩和するものが知られている（以下、第１
従来例という）。By the way, in this type of press molding,
The periphery of the plate material including the welded ends of the plate materials is stretch-flange-formed, and cracks or the like may occur at the press-forming due to stress concentration at the periphery of the plate material. For this reason, as disclosed in Japanese Utility Model Application Laid-Open No. 3-24371, the joint end portion of each steel plate is formed into a projecting piece in advance, and after welding, the projecting piece is cut out to form a removed portion. It is known to reduce stress concentration at the time of press forming (hereinafter referred to as first
Conventional example).
【０００４】また、プレス成形後のトリミング時に不要
部分を除去するという観点から、溶接部位端縁部の両側
に対応して予め設けられた不要部分に切欠部を形成する
ことにより、該溶接部位端縁部に応力集中が発生するこ
とを回避するものが知られている（以下、第２従来例と
いう）。Further, from the viewpoint of removing unnecessary portions at the time of trimming after press forming, notches are formed in unnecessary portions provided in advance corresponding to both sides of the edge portion of the welding portion, so that the welding portion end is formed. It is known that stress concentration is prevented from occurring at the edge (hereinafter, referred to as a second conventional example).
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上記第
１従来例では、溶接後に突状片を切除する作業が必要と
なり、工程数が増加して生産性が低下するという問題が
指摘されている。However, in the first conventional example, it is pointed out that the work of cutting off the protruding pieces after welding is required, which increases the number of steps and lowers productivity.
【０００６】また、上記第２従来例では、不要部分が多
くなって板材の歩留りが低下するとともに、特に板厚の
異なる板材同士を溶接する際に切欠部の位置を設定する
作業が困難となるという問題が生じている。Further, in the second conventional example, unnecessary portions are increased and the yield of the plate material is reduced, and it is difficult to set the position of the notch when welding plate materials having different thicknesses. The problem has arisen.
【０００７】本発明は、この種の問題を解決するもので
あり、複数の板材同士を接合するとともに、前記板材の
伸びフランジ成形される板材周縁部に応力集中が発生す
ることを確実に阻止することが可能な集合ブランク部材
の製造方法を提供することを目的とする。SUMMARY OF THE INVENTION The present invention solves this kind of problem and joins a plurality of plate members together and reliably prevents stress concentration from occurring at the periphery of the plate member on which the stretch flange is formed. set blank member that can
And to provide a method of manufacturing.
【０００８】[0008]
【課題を解決するための手段】前記の目的を達成するた
めに、本発明は、複数の板材の端部を互いに接合して構
成され、後にプレス成形される集合ブランク部材の製造
方法であって、前記複数の板材の端部同士を突き合わせ
た状態で、その突き合わせ縁にレーザ光を照射して前記
端部同士を溶接する工程と、 前記板材同士の溶接端部を
含み、後に伸びフランジ成形される湾曲した板材周縁部
近傍に、前記レーザ光を照射して焼鈍し軟化処理を施す
工程と、 前記端部同士が溶接された前記複数の板材を、
所定の形状にプレス成形する工程と、 を有することを特
徴とする。SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a method of manufacturing a collective blank member which is formed by joining ends of a plurality of plate members to each other, and which is subsequently pressed.
A method for abutting ends of said plurality of plates
Irradiate laser light to the abutting edge in the
A step of welding the ends, and a welding end of the plate materials.
Included and later stretched and flanged curved perimeter
In the vicinity, the laser beam is applied to anneal and soften
Step, the plurality of plate members welded end portions,
Characterized in that it and a step of press-formed into a predetermined shape.
【０００９】[0009]
【００１０】[0010]
【作用】本発明の集合ブランク部材の製造方法では、複
数の板材の端部同士が互いに溶接された後、前記板材の
伸びフランジ成形される板材周縁部近傍にレーザ光の照
射により軟化部位が設けられる。従って、この集合ブラ
ンク部材にプレス成形作業を施す際に、前記軟化部位が
容易に伸びて、前記板材周縁部に応力集中が発生するこ
とを確実に阻止することができる。In the manufacturing method of the set blank member of the present invention, after the ends of the plurality of plate members are welded together, softened portion by laser light irradiation to the plate peripheral edge near which is stretch flangeability of the plate is Provided. Therefore, when the collective blank member is subjected to the press forming operation, it is possible to reliably prevent the softened portion from easily extending and generating stress concentration at the peripheral edge portion of the plate material .
【００１１】[0011]
【実施例】本発明に係る集合ブランク部材の製造方法に
ついて実施例を挙げ、添付の図面を参照しながら以下詳
細に説明する。Examples a method for manufacturing the set blank member according to the embodiment of the present invention will be described in detail with reference to the accompanying drawings.
【００１２】図１および図２において、参照符号１０
は、本実施例に係る集合ブランク部材を示す。この集合
ブランク部材１０は、自動車車体の構成部品である、例
えばサイドパネルを構成するものであり、板厚の異なる
板材、すなわち厚板側のフロントピラー部１２およびセ
ンタピラー部１４と、薄板側のサイドシル部１６等とを
互いに突き合わせ溶接して形成される。フロントピラー
部１２とサイドシル部１６およびセンタピラー部１４と
サイドシル部１６との突き合わせ縁には、レーザ光（後
述する）の照射によりそれぞれレーザ溶接部位１８、２
０が設けられる。In FIG. 1 and FIG.
Shows a collective blank member according to the present embodiment. The collective blank member 10 is a component of an automobile body, for example, constitutes a side panel, and has plate materials having different plate thicknesses, that is, a front pillar portion 12 and a center pillar portion 14 on a thick plate side and a thin plate side. The side sill portion 16 and the like are formed by butt welding with each other. Abutting edges of the front pillar portion 12 and the side sill portion 16 and the center pillar portion 14 and the side sill portion 16 are irradiated with laser light (described later) to form laser welding portions 18 and 2 respectively.
0 is provided.
【００１３】この集合ブランク部材１０は、後にプレス
成形加工によりサイドパネルに対応した形状に成形され
るものであり、フロントピラー部１２の溶接端部２２と
センタピラー部１４の溶接端部２４、２６とを含む板材
周縁部２８、３０および３２等の近傍に、レーザ光（後
述する）の照射による焼鈍し軟化処理を介して軟化部位
３４、３６および３８が設けられる。The collective blank member 10 is later formed into a shape corresponding to the side panel by press forming. The welded end portion 22 of the front pillar portion 12 and the welded end portions 24, 26 of the center pillar portion 14 are formed. The softened portions 34, 36 and 38 are provided in the vicinity of the plate material peripheral portions 28, 30 and 32 including the following through annealing and softening treatment by irradiation with laser light (described later).
【００１４】次に、当該集合ブランク部材１０を製造す
る作業について、本実施例に係る製造方法との関連で説
明する。Next, an operation of manufacturing the collective blank member 10 will be described in relation to the manufacturing method according to the present embodiment.
【００１５】まず、厚板側のフロントピラー部１２およ
びセンタピラー部１４と、薄板側のサイドシル部１６等
とが用意され、このフロントピラー部１２およびセンタ
ピラー部１４の端部とこのサイドシル部１６の端部とが
互いに突き合わされる。そして、図３に示すように、レ
ーザトーチ４０から出力されるレーザ光Ｌが、フロント
ピラー部１２およびセンタピラー部１４の端部とサイド
シル部１６の端部との突き合わせ縁に沿って照射され
る。これにより、この突き合わせ縁が全体的に溶接され
てレーザ溶接部位１８、２０が設けられる。First, a front pillar portion 12 and a center pillar portion 14 on the thick plate side, a side sill portion 16 on the thin plate side and the like are prepared, and ends of the front pillar portion 12 and the center pillar portion 14 and the side sill portion 16 are provided. Are butted against each other. Then, as shown in FIG. 3, the laser beam L output from the laser torch 40 is emitted along the butting edge between the end of the front pillar 12 and the center pillar 14 and the end of the side sill 16. As a result, the butted edges are entirely welded to provide laser welding portions 18 and 20.
【００１６】次いで、フロントピラー部１２の溶接端部
２２とセンタピラー部１４の溶接端部２４、２６とを含
む板材周縁部２８、３０および３２等の近傍に、レーザ
光Ｌが照射され、この板材周縁部２８、３０および３２
等の近傍に焼鈍し軟化処理が施されて軟化部位３４、３
６および３８が設けられる。ここで、レーザ光Ｌの出力
を低下させる必要がある場合、例えば、レーザトーチ４
０を上記溶接時の位置（図３中、実線参照）から下方ま
たは上方にずらせることにより（図３中、二点鎖線参
照）、容易に対応することができる。Next, the laser beam L is irradiated to the vicinity of the plate material peripheral portions 28, 30 and 32 including the welded end portion 22 of the front pillar portion 12 and the welded end portions 24 and 26 of the center pillar portion 14, and the like. Plate peripheral edges 28, 30 and 32
Are annealed and softened in the vicinity of the softened portions 34, 3
6 and 38 are provided. Here, when it is necessary to reduce the output of the laser light L, for example, the laser torch 4
By shifting 0 from the welding position (see the solid line in FIG. 3) downward or upward (see the two-dot chain line in FIG. 3), it is possible to easily cope with this.
【００１７】そこで、このように構成される集合ブラン
ク部材１０は、図示しないプレス成形機によって所望の
サイドパネルに対応した形状に成形される。その際、集
合ブランク部材１０の湾曲する板材周縁部２８、３０お
よび３２等が伸びフランジ成形となり、この板材周縁部
２８、３０および３２等に過剰な引張応力が生じて亀裂
発生等の要因となり易い。Therefore, the collective blank member 10 configured as described above is formed into a shape corresponding to a desired side panel by a press forming machine (not shown). At this time, the curved plate material peripheral portions 28, 30 and 32 of the collective blank member 10 are stretch-flange-formed, and excessive tensile stress is generated in the plate material peripheral portions 28, 30 and 32 and the like, which is likely to cause a crack or the like. .
【００１８】しかしながら、本実施例では、板材周縁部
２８、３０および３２等の近傍にレーザ光Ｌの照射によ
り焼鈍し軟化処理が施されて軟化部位３４、３６および
３８等が設けられている。従って、集合ブランク部材１
０にフランジ成形が施されると、伸びフランジ成形され
る板材周縁部２８、３０および３２等の近傍に設けられ
ている軟化部位３４、３６および３８等が容易に伸び
て、この板材周縁部２８、３０および３２等に対応して
成形されるフランジ面にさほど大きな引張応力が発生す
ることはない。これにより、集合ブランク部材１０に亀
裂等が発生することを確実に阻止することができ、効率
的かつ高精度なプレス成形作業が遂行されるという効果
が得られる。However, in the present embodiment, softened portions 34, 36, and 38 are provided in the vicinity of the peripheral portions 28, 30, and 32 of the plate material by being subjected to annealing and softening by irradiation with the laser beam L. Therefore, the collective blank member 1
0, the softened portions 34, 36, 38, etc., provided in the vicinity of the plate material peripheral portions 28, 30, 32, etc., to be stretched and flanged easily extend, and the plate material peripheral portion 28, , 30 and 32, etc., does not generate a large tensile stress on the flange surface formed. Thereby, generation of cracks and the like in the collective blank member 10 can be reliably prevented, and an effect that an efficient and highly accurate press forming operation is performed can be obtained.
【００１９】[0019]
【発明の効果】本発明に係る集合ブランク部材の製造方
法によれば、以下の効果乃至利点が得られる。According to the manufacturing method of the set blank member according to the present invention, it is obtained the following effects or advantages.
【００２０】複数の板材の端部同士が互いに溶接された
後、前記板材の伸びフランジ成形される板材周縁部近傍
にレーザ光の照射により軟化部位が設けられるため、こ
の集合ブランク部材にプレス成形作業を施す際に、前記
軟化部位が容易に伸びて、前記板材周縁部に応力集中が
発生することを確実に阻止することができる。従って、
集合ブランク部材に亀裂等が発生することを確実に阻止
することが可能になり、効率的かつ高精度なプレス成形
作業が遂行される。After the ends of the plurality of plate members are welded to each other, a softened portion is provided by laser light irradiation near the periphery of the plate member to be stretch-flange-formed by the press-forming operation. When applying, the softened portion is easily extended, and it is possible to reliably prevent stress concentration from occurring at the peripheral portion of the plate material . Therefore,
Cracks and the like can be reliably prevented from being generated in the collective blank member, and an efficient and highly accurate press forming operation is performed.
【図１】本発明の実施例に係る集合ブランク部材の全体
構成図である。FIG. 1 is an overall configuration diagram of a collective blank member according to an embodiment of the present invention.
【図２】前記集合ブランク部材の要部拡大図である。FIG. 2 is an enlarged view of a main part of the collective blank member.
【図３】前記集合ブランク部材の溶接作業の説明図であ
る。FIG. 3 is an explanatory view of a welding operation of the collective blank member.
１０…集合ブランク部材 １２…フロントピラー部 １４…センタピラー部 １６…サイドシル部 １８、２０…溶接部位 ２２、２４、２６…溶接端部 ２８、３０、３２…板材周縁部 ３４、３６、３８…軟化部位 ４０…レーザトーチ Ｌ…レーザ光 DESCRIPTION OF SYMBOLS 10 ... Blank member 12 ... Front pillar part 14 ... Center pillar part 16 ... Side sill part 18, 20 ... Welded part 22, 24, 26 ... Weld end part 28, 30, 32 ... Peripheral part 34, 36, 38 ... Softening Part 40: Laser torch L: Laser beam
フロントページの続き (56)参考文献 特開 昭63−168286（ＪＰ，Ａ) 特開 昭56−139295（ＪＰ，Ａ) 特開 昭53−50050（ＪＰ，Ａ) 特開 平５−7943（ＪＰ，Ａ) 特開 昭50−106853（ＪＰ，Ａ) 特開 平５−15985（ＪＰ，Ａ) 実開 昭64−10325（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.6，ＤＢ名) B21D 22/20Continuation of the front page (56) References JP-A-63-168286 (JP, A) JP-A-56-139295 (JP, A) JP-A-53-50050 (JP, A) JP-A-5-7943 (JP) , A) JP-A-50-100683 (JP, A) JP-A-5-15985 (JP, A) JP-A-64-10325 (JP, U) (58) Fields investigated (Int. Cl. 6 , DB Name) B21D 22/20
Claims (1)
れ、後にプレス成形される集合ブランク部材の製造方法
であって、 前記複数の板材の端部同士を突き合わせた状態で、その
突き合わせ縁にレーザ光を照射して前記端部同士を溶接
する工程と、 前記板材同士の溶接端部を含み、後に伸びフランジ成形
される湾曲した板材周縁部近傍に、前記レーザ光を照射
して焼鈍し軟化処理を施す工程と、前記端部同士が溶接された前記複数の板材を、所定の形
状にプレス成形する工程と、 を有することを特徴とする集合ブランク部材の製造方
法。1. A method of manufacturing a collective blank member which is formed by joining ends of a plurality of plate members to each other and which is subsequently pressed and formed, wherein the ends of the plurality of plate members are butted together. a step of welding the end portions by irradiating a laser beam to each other at the edges, the include weld end of the plate member to each other, the plate peripheral edge portion near the curved is flanged elongation after, by irradiating the laser beam baked Subjecting the plurality of plates to which the ends are welded together to a predetermined shape.
Method for producing a set blank member characterized by comprising the steps of press molding Jo, the.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5015531A JP2783490B2 (en) | 1993-02-02 | 1993-02-02 | Manufacturing method of collective blank members |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5015531A JP2783490B2 (en) | 1993-02-02 | 1993-02-02 | Manufacturing method of collective blank members |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06226479A JPH06226479A (en) | 1994-08-16 |
| JP2783490B2 true JP2783490B2 (en) | 1998-08-06 |
Family
ID=11891399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5015531A Expired - Fee Related JP2783490B2 (en) | 1993-02-02 | 1993-02-02 | Manufacturing method of collective blank members |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2783490B2 (en) |
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|---|---|---|---|---|
| CN104822849B (en) | 2012-09-06 | 2017-05-17 | Etxe-Tar有限公司 | Method and system for laser hardening of a surface of a workpiece |
| MX2017011964A (en) | 2015-03-17 | 2018-06-15 | Ikergune A I E | Method and system for heat treatment of sheet metal. |
| JP7172107B2 (en) * | 2018-04-11 | 2022-11-16 | 日本製鉄株式会社 | Press molded product and its manufacturing method |
| JP7052743B2 (en) | 2019-01-25 | 2022-04-12 | トヨタ自動車株式会社 | Steel sheet forming method and punching machine |
| EP3685933B1 (en) | 2019-01-25 | 2021-09-08 | Toyota Jidosha Kabushiki Kaisha | Method for processing steel plate |
| US11826857B2 (en) * | 2019-03-26 | 2023-11-28 | Nippon Steel Corporation | Steel sheet and member |
| MX2021012210A (en) | 2019-04-10 | 2021-11-03 | Nippon Steel Corp | Blank and component. |
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|---|---|---|---|---|
| JPS5350050A (en) * | 1976-10-19 | 1978-05-08 | Tajima Sanshiyou Kk | Method of integral reduction forming of bath tub made of stainless steel |
| JPS6054837B2 (en) * | 1980-03-31 | 1985-12-02 | 三菱重工業株式会社 | How to join metal strips |
| DE3684331D1 (en) * | 1986-12-22 | 1992-04-16 | Thyssen Stahl Ag | METHOD FOR PRODUCING A MOLDED BODY FROM SHEET PARTS OF DIFFERENT THICKNESS. |
| JP2528751B2 (en) * | 1991-06-27 | 1996-08-28 | 住友軽金属工業株式会社 | Deep drawing method for metal sheet |
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1993
- 1993-02-02 JP JP5015531A patent/JP2783490B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019131289A1 (en) | 2017-12-25 | 2019-07-04 | Ｊｆｅスチール株式会社 | Method for manufacturing press formed product |
| KR20200087229A (en) | 2017-12-25 | 2020-07-20 | 제이에프이 스틸 가부시키가이샤 | Method for manufacturing press-formed products |
| US11511330B2 (en) | 2017-12-25 | 2022-11-29 | Jfe Steel Corporation | Method for manufacturing press formed product |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06226479A (en) | 1994-08-16 |
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| LAPS | Cancellation because of no payment of annual fees |