JP2703857B2 - Collective blank members - Google Patents
Collective blank membersInfo
- Publication number
- JP2703857B2 JP2703857B2 JP5009173A JP917393A JP2703857B2 JP 2703857 B2 JP2703857 B2 JP 2703857B2 JP 5009173 A JP5009173 A JP 5009173A JP 917393 A JP917393 A JP 917393A JP 2703857 B2 JP2703857 B2 JP 2703857B2
- Authority
- JP
- Japan
- Prior art keywords
- collective blank
- welding
- blank member
- collective
- plate
- 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
- Body Structure For Vehicles (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、複数の板材の端部を互
いに溶接してなり、後に所望の形状にプレス成形される
集合ブランク部材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a collective blank member in which ends of a plurality of plate members are welded to each other, and subsequently formed into a desired shape by pressing.
【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、板厚の異なる複数の板材
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４
４−２４７６３号公報参照）。2. Description of the Related Art For example, when molding a side panel or the like which is a component of an automobile body, a plurality of plate members having different plate thicknesses are butted together, and the butted edges are welded to obtain a flat plate material. This flat plate is press-formed in accordance with a desired component shape (Japanese Patent Publication No. Sho 4).
No. 4-24763).
【０００３】ところで、この種のプレス成形に際して、
各板材同士の溶接部位端縁部が伸びフランジ成形とな
り、該プレス成形時に前記溶接部位端縁部に応力集中に
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
応力の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 edges of the welded portions of the respective plate members are stretch-flange-formed, and cracks and the like may occur at the press-formed edges due to stress concentration at the edges of the welded portions. 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 that the concentration of stress at the time of press molding is reduced (hereinafter referred to as the first type).
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）。In addition, from the viewpoint of removing unnecessary portions during trimming after press forming, notches are formed in unnecessary portions provided in advance on both sides of the edge portion of the welding portion, so that the edge portion of the welding portion is formed. It is known to avoid the occurrence of stress concentration (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、各鋼板に予め突状片を設ける一方、溶接
後にこの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, a projecting piece is provided in advance on each steel sheet, and it is necessary to cut off the projecting piece after welding, which increases the number of processes and increases production. It has been pointed out that there is a problem that the performance is reduced.
【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、複数の板材の端部を接合するとともに、その接合
端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を提供することを目的とする。The present invention solves this kind of problem, and is an assembly capable of joining the ends of a plurality of plate members and reliably preventing stress concentration from occurring at the joined ends. An object is to provide a blank member.
【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溶接して構
成され、後にプレス成形される集合ブランク部材であっ
て、前記板材同士の溶接部位は、該板材の伸びフランジ
成形される曲線端縁部側に指向して延在する中央溶接部
と、前記中央溶接部の終端から屈曲乃至湾曲して前記曲
線端縁部より離間した位置で終端する端部溶接部と、を
備えることを特徴とする。In order to achieve the above-mentioned object, the present invention provides a collective blank member which is formed by welding the ends of a plurality of plate members to each other, and which is later formed by pressing. The welded portions are separated from the curved edge by bending or curving from the end of the central welded portion extending toward the curved edge edge side of the plate material extending toward the curved flange. And an end welded portion terminating at a set position.
【０００９】[0009]
【作用】本発明の集合ブランク部材では、板材同士の溶
接部位の端部溶接部が、該板材の伸びフランジ成形され
る曲線端縁部から離間した位置で終端している。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、端部溶接部が伸びフランジ成形されることがなく、
前記端部溶接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 collective blank member according to the present invention, the end weld portion of the welding portion between the plate materials terminates at a position separated from the curved edge portion of the plate material where the flange is formed. Therefore, when performing the press forming operation on this collective blank member, the end weld portion is not stretched and flanged,
It is possible to reliably prevent stress concentration from occurring at the end welded portion.
【００１０】[0010]
【実施例】本発明に係る集合ブランク部材について実施
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。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a collective blank member according to the present invention.
【００１１】図１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、それぞれ溶接部位１８、２
０が設けられる。In FIG. 1, reference numeral 10 indicates 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. Welding portions 18, 2 are provided at the butting edges of the front pillar portion 12 and the side sill portion 16 and between the center pillar portion 14 and the side sill portion 16, respectively.
0 is provided.
【００１２】この溶接部位１８、２０は、フロントピラ
ー部１２、センタピラー部１４およびサイドシル部１６
等の伸びフランジ成形される曲線端縁部２２、２４およ
び２６側に指向して延在する中央溶接部２８、３０と、
この中央溶接部２８、３０の終端から屈曲乃至湾曲して
前記曲線端縁部２２、２４および２６より離間した位置
で終端する端部溶接部３２、３４および３６とを備える
（図１および図２参照）。The welding portions 18 and 20 are formed by a front pillar portion 12, a center pillar portion 14 and a side sill portion 16.
Center welds 28, 30 extending toward the curvilinear edges 22, 24 and 26 to be stretch flanged;
End welds 32, 34, and 36 are provided that are bent or curved from the ends of the central welds 28, 30 and terminate at positions separated from the curved edge portions 22, 24, and 26 (FIGS. 1 and 2). reference).
【００１３】次に、このように構成される集合ブランク
部材１０を製造する作業について説明する。Next, an operation of manufacturing the collective blank member 10 configured as described above will be described.
【００１４】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、図示しない溶接機の作
用下にフロントピラー部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が溶
接され、溶接部位１８および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. The front pillar portion 12 and the center pillar portion 14 are operated under the action of a welding machine (not shown).
Are welded to the edges of the end of the side sill 16 and the ends of the side sill 16 to provide welding portions 18 and 20.
【００１５】次いで、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。この場合、
集合ブランク部材１０は、厚板側のフロントピラー部１
２およびセンタピラー部１４と、薄板側のサイドシル部
１６とが突き合わせ溶接されているため、伸びフランジ
成形によりこの厚板側のフロントピラー部１２およびセ
ンタピラー部１４が薄板側のサイドシル部１６側に伸び
てそれぞれの端部溶接部３２、３４および３６に応力集
中が生じ易い。Next, the assembled 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). in this case,
The collective blank member 10 includes the front pillar 1 on the thick plate side.
2 and the center pillar portion 14 and the side sill portion 16 on the thin plate side are butt-welded, so that the front pillar portion 12 and the center pillar portion 14 on the thick plate side are attached to the side sill portion 16 side on the thin plate side by stretch flange forming. It tends to expand and stress concentration occurs at each of the end welds 32, 34 and 36.
【００１６】しかしながら、本実施例では、上記端部溶
接部３２、３４および３６が、伸びフランジ成形される
曲線端縁部２２、２４および２６から離間した位置で終
端している。従って、プレス成形時に曲線端縁部２２、
２４および２６に伸びフランジ成形が施される際、端部
溶接部３２、３４および３６に応力が集中することを確
実に阻止することができる。これによって、プレス成形
加工時に亀裂等が発生することがなく、高精度かつ効率
的なプレス成形作業が遂行されるという効果が得られ
る。In the present embodiment, however, the end welds 32, 34 and 36 terminate at positions spaced apart from the curved edge portions 22, 24 and 26 to be stretch-flanged. Therefore, at the time of press molding, the curved edge portion 22,
When stretch-flange forming is performed on 24 and 26, concentration of stress on the end welds 32, 34 and 36 can be reliably prevented. Thereby, there is obtained an effect that a crack and the like are not generated at the time of press forming, and a highly accurate and efficient press forming operation is performed.
【００１７】[0017]
【発明の効果】本発明に係る集合ブランク部材によれ
ば、以下の効果乃至利点が得られる。According to the collective blank member of the present invention, the following effects and advantages can be obtained.
【００１８】板材同士の溶接部位の端部溶接部が、該板
材の伸びフランジ成形される曲線端縁部から離間した位
置で終端している。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、端部溶接部が伸びフランジ成
形されることがなく、前記端部溶接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になる。これによ
り、亀裂等の発生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可能になる。An end welded portion of a welding portion between the plate materials terminates at a position separated from a curved edge portion of the plate material which is stretch-flanged. Therefore, when press forming work is performed on this collective blank member, the end weld portion is not stretched and flanged, and it is possible to reliably prevent stress concentration from occurring at the end weld portion. Become. As a result, the occurrence of cracks and the like can be reliably prevented, and an efficient and highly accurate press forming operation can be 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説明図であ
る。FIG. 2 is an enlarged explanatory view of a main part 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…曲線端縁部 ２８、３０…中央溶接部 ３２、３４、３６…端部溶接部 DESCRIPTION OF SYMBOLS 10 ... Collective blank member 12 ... Front pillar part 14 ... Center pillar part 16 ... Side sill part 18, 20 ... Welding part 22, 24, 26 ... Curved edge part 28, 30 ... Central welding part 32, 34, 36 ... End part welded part
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平６−226364（ＪＰ，Ａ) 特開 平６−154928（ＪＰ，Ａ) 実開 平３−24371（ＪＰ，Ｕ) ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-6-226364 (JP, A) JP-A-6-154928 (JP, A) JP-A-3-24371 (JP, U)
Claims (1)
れ、後にプレス成形される集合ブランク部材であって、 前記板材同士の溶接部位は、該板材の伸びフランジ成形
される曲線端縁部側に指向して延在する中央溶接部と、 前記中央溶接部の終端から屈曲乃至湾曲して前記曲線端
縁部より離間した位置で終端する端部溶接部と、 を備えることを特徴とする集合ブランク部材。1. A collective blank member which is formed by welding ends of a plurality of plate members to each other and is later formed by press forming, wherein a welded portion between the plate members is a curved edge formed by stretch flange forming of the plate members. A central weld extending toward the part side, and an end weld that bends or curves from the end of the central weld and terminates at a position separated from the curved edge. Collective blank members.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5009173A JP2703857B2 (en) | 1993-01-22 | 1993-01-22 | Collective blank members |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5009173A JP2703857B2 (en) | 1993-01-22 | 1993-01-22 | Collective blank members |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06218543A JPH06218543A (en) | 1994-08-09 |
| JP2703857B2 true JP2703857B2 (en) | 1998-01-26 |
Family
ID=11713194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5009173A Expired - Fee Related JP2703857B2 (en) | 1993-01-22 | 1993-01-22 | Collective blank members |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2703857B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022230836A1 (en) * | 2021-04-28 | 2022-11-03 | 日本製鉄株式会社 | Weld bead width design method for tailored blank material, manufacturing method, manufacturing system, weld bead width design system, vehicular structural member, and tailored blank material |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7346377B2 (en) * | 2020-12-25 | 2023-09-19 | 豊田鉄工株式会社 | Center pillar components for vehicles and their manufacturing method |
-
1993
- 1993-01-22 JP JP5009173A patent/JP2703857B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022230836A1 (en) * | 2021-04-28 | 2022-11-03 | 日本製鉄株式会社 | Weld bead width design method for tailored blank material, manufacturing method, manufacturing system, weld bead width design system, vehicular structural member, and tailored blank material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06218543A (en) | 1994-08-09 |
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