JPS5973120A - Bending method of pressed article - Google Patents
Bending method of pressed articleInfo
- Publication number
- JPS5973120A JPS5973120A JP18212582A JP18212582A JPS5973120A JP S5973120 A JPS5973120 A JP S5973120A JP 18212582 A JP18212582 A JP 18212582A JP 18212582 A JP18212582 A JP 18212582A JP S5973120 A JPS5973120 A JP S5973120A
- Authority
- JP
- Japan
- Prior art keywords
- product
- punch
- flange
- bending
- dies
- 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
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/01—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、プレス曲げ加工り法に関し、つ」−ブ面の形
状が変化しているコ字状断面のプレス品の伸びフランジ
面および縮みフランジ面に発生づる湾曲おＪ：びしわと
いう不良現象を除去づるプレス品の曲げ加二［方法に開
りるｂのＣある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a press bending method, and relates to a press bending method, and the present invention relates to a press bending method, and is directed to the bending and bending that occurs on the stretch flange surface and the shrinkage flange surface of a pressed product having a U-shaped cross section in which the shape of the curved surface is changed. J: Bending of pressed products to remove the defective phenomenon of wrinkles [There is C of B in Method.
つ１ブ面の形状が変化しているコ字状断面のプレス品は
、第１図に示Ｔ 、ｌうに、Ｌ下型に固定された１ｉＩ
ｌ雄一対のパンチ１とダイフェイス２ａがつ１ブ面と同
形状のダイ２で曲げ加工されるのが一般的Ｃある。その
際１］−稈で製品を得るためにｔ、１、バンチ１どパッ
ド３ Ｆ液加］部月４を挾み、つ１ブ面４ａの形状に長
手方向に曲げてから、ダイ２内に液加−１一部月４をパ
ンチ１で押込むことによってフランジ面４． ｌ）を〜
゛ｌ上げ（いる。Ｊ、って第２図に示りＪ、うに、加二
に途中の伸びフランジ面４０および縮みフランジ面４（
１にはそれぞれ周方向にまたイの人ささが７ランジ４
ｂの根元から先端に向つく放θ４状に分布Ｊる引張りお
Ｊ、び圧縮の応力が負？ｉ？ｉされる。このため、伸び
フランジ面４０は、周方向に伸はされ４１がら、しかも
タイのｎ部に４Ｔつきながら成形されるため、湾曲５が
残り、また縮みフランジ面４ｄは、周り向の圧縮応力に
まり庁屈し同じくダイの肩部になつきながら成形される
１、：め、しわ６どともに湾曲７が残る。１ｔＴＪｊ第
３図は伸びフランジ面４Ｃの断面を示している。これは
プレス品自体の精度不良とともに金型の型かじりの原因
となる。A pressed product with a U-shaped cross section in which the shape of the one-button surface changes is shown in Figure 1.
Generally, a pair of male punches 1 and a die face 2a are bent by a die 2 having the same shape as the punch 1 and die face 2a. At that time, 1] - To obtain a product with the culm, apply t, 1, bunch 1 pad 3 F liquid] sandwich the part 4, bend it in the longitudinal direction into the shape of the 1-piece surface 4a, and then insert it into the die 2. Add liquid to the flange surface 4 by pushing the moon 4 with the punch 1. l) ~
J is shown in Figure 2, and the expansion flange surface 40 and the contraction flange surface 4 (
1 has 7 lunges with 7 lunges and 4 in the circumferential direction.
Is the tensile, compressive stress J distributed in a radial θ4 shape directed from the root to the tip of b negative? i? I will be treated. For this reason, the stretch flange surface 40 is formed while being stretched in the circumferential direction 41 and with 4T attached to the n part of the tie, so the curvature 5 remains, and the contracted flange surface 4d is subjected to compressive stress in the circumferential direction. The curve 7 remains in both the edges and wrinkles 6, which are formed while bending at the edge of the die. 1tTJj FIG. 3 shows a cross section of the stretch flange surface 4C. This causes not only poor precision of the pressed product itself but also galling of the mold.
従来この湾曲おＪ、びしわという不良現象に対する対策
方法どしでは、湾曲やしわの発生ずる部分のパンチとダ
イの間隙を製品板厚程度とし、他のフランジ面の接する
部分の間隙よりも狭くし−Ｃ製品のフランジ面をダイに
強制的に注入し、所謂しごきどいつｙｊ法を行なつ−（
加工するか、あるいは、曲げ加１１ノランジ面の形状を
矯ｉにする歪取１稈を設りる等の例があるが、前者の対
策では、製品に傷等が発生し製品どしての外観も悪く、
金型の摩耗もひどくなるという欠点がおり、後者の対策
で【よ、フランジ面の形状を矯正する見込みが困デ＃ｔ
−１多くの１数が必要どなっている。。Conventionally, the countermeasures against defective phenomena such as bending and wrinkling have been to make the gap between the punch and the die at the part where the bending or wrinkling occurs to be about the thickness of the product board, and to make it narrower than the gap at the part where the other flange surfaces touch. - Forcibly inject the flange surface of the C product into the die and perform the so-called ironing method - (
There are examples of methods such as processing or installing a strain relief culm to correct the shape of the bent surface, but the former method may cause scratches on the product and cause damage to the product. The appearance is also bad;
The drawback is that the mold wear becomes severe, so the latter measure is unlikely to correct the shape of the flange surface.
-1 Many 1 numbers are needed. .
本発明は、フランジ面が］字状断面に曲げ加工される時
に、フランジ面に引張および圧縮の応力が負荷され１．
ｆいようにりることを目的どりる。According to the present invention, when the flange surface is bent into a ]-shaped cross section, tensile and compressive stresses are applied to the flange surface.1.
The purpose is to go like f.
この目的をｉ？成りるために、本発明のプレス品の曲げ
加工方法においては、まず第一の工程どしてウーＬブ面
の形状が変化しでいないコ字状断面のブ１ノス品を加工
し、第二の１程にＬ１２いてウェブ面に形状の変化をつ
（）る方法がとられている。これは伸びフランジ面Ｊ３
よび縮みフランジ面を型に閉じた状態で成形づる方法で
ある。Is this purpose? In order to achieve this, in the method for bending pressed products of the present invention, first, a bent product with a U-shaped cross section in which the shape of the woven L-shaped surface does not change is processed in the first step, and then A method has been adopted in which the shape of the web surface changes at about 1/2 of the length L12. This is the stretch flange surface J3
This is a method in which the flange surface is closed in a mold and then molded.
これにより従来方法による曲げ加−１一時の金型のかじ
りおにび製品の湾曲、しわという不良現象は解決される
。This solves the defective phenomenon of bending and wrinkling of the product caused by galling of the mold during bending in the conventional method.
以下に、本発明のプレス品の曲４Ｊ’加工方法の一実施
例を図面を参照して説明する。Hereinafter, an embodiment of the method for processing a pressed product according to the present invention will be described with reference to the drawings.
第４図は本発明のプレス品の曲げ加、【方法の第一の工
程を実／ｉｌＩ？Ｉる装置を示しており、第５図は第二
の工程を実施する装置を示している。Figure 4 shows the bending of a pressed product according to the present invention, [the first step of the method]. FIG. 5 shows an apparatus for carrying out the second step.
ｊ：ず、第４図において、１０は図示を省略したＬ型に
取ｆＮＪＵられたパンチ（゛・、１１は第６図の被加工
部（４Ｗ１をパンチ１０と協働して挟持づるパッド、１
２は一対のダイである。一対のタイ１２の間隔は、被加
工部材Ｗ１の中間製品Ｗ２である第７図のウェブ面が真
直な断面１字私製品のフランジの外側の面間距離に合わ
けられ（いる。j: In Fig. 4, 10 is an L-shaped punch (not shown), 11 is a pad that clamps the workpiece part (4W1 in cooperation with the punch 10) in Fig. 6; 1
2 is a pair of dies. The distance between the pair of ties 12 is set to the distance between the outer surfaces of the flanges of the intermediate product W2 of the workpiece W1 in FIG. 7, where the web surface is straight in cross section.
第４図の装置を用い、第６図の平板状の被加工部材Ｗ１
をパンチ１０とパッド１゛１で挟持し、一対のダイ１２
．１２間に上方から下方に向りて折り込むことにＪ：す
、第７図の中間製品Ｗ２を形成りる。これが第一の工程
である。第一の」工程で形成された中間製品Ｗ２はウェ
ブ１３とフランジ１４を右し、つ１ブ１３の面は艮手刀
向に真直に延びτいる。Using the apparatus shown in FIG. 4, the flat plate-shaped workpiece W1 shown in FIG.
is held between the punch 10 and the pad 1'1, and a pair of dies 12
．． The intermediate product W2 shown in FIG. 7 is formed by folding from the top to the bottom for 12 minutes. This is the first step. The intermediate product W2 formed in the first step has a web 13 and a flange 14 on the right, and the surface of the tube 13 extends straight in the direction of the hand.
つぎに第り図の装置についＣ説明する。第５図におい−
Ｃ１１６はパンチで、第８図の最終製品Ｗ３のウコーブ
′１３３の変化部１５に対応覆る部位に、変化部１５の
形状になられせた変化形状１７を有し一〇いる。図示例
では下刃に向つ（突出づる突出部となっている。１８は
パッドで、パンチ′１６を協％ｌｊシて中間製品Ｗ２を
秋ｊｉツる。Next, the apparatus shown in Fig. 2 will be explained. Figure 5 -
C116 is a punch which has a modified shape 17 formed into the shape of the modified portion 15 at a portion that corresponds to and covers the modified portion 15 of the U-cove '133 of the final product W3 in FIG. In the illustrated example, it is a protruding part that protrudes toward the lower blade. Reference numeral 18 denotes a pad, which is used to press the punch '16 to punch the intermediate product W2.
パッド１８のパンチ１６に対向する而には、パンチ１６
の変化形状１７部位に対応づる部位にパンチ１６の変化
形状と１［１を雄の関係になる変化形状１９が形成され
℃いる。２０は一対のダイで最終製品Ｗ３の７ランジ１
４の外側の面間距１１ｔ ｌ−） ｏ分ＩＴいに隔てら
れている。またパンチ１Ｇは、その幅が最終製品Ｗ３の
フランジ゛１４の内側の百間距ｔｉｌｌ Ｄ ｉ分ηい
にｍ′（られている。Opposed to the punch 16 of the pad 18 is the punch 16.
A modified shape 19 having a male relationship with the modified shape of the punch 16 is formed at a portion corresponding to the modified shape 17 of the punch 16. 20 is a pair of dies and 7 lunges 1 of the final product W3
The outer surface distance of 4 is 11tl-) o minutes IT. Further, the width of the punch 1G is set to be m'(m') equal to the distance 100 meters inside the flange 14 of the final product W3.
第５図の装置を用い、第７図の中間製品Ｗ２から第８図
の最終製品Ｗ３をプレス曲げ加］−覆る。これが第二の
工程である。第二の工程においては、；１：ずダイ２０
間でパッド１８」−に中間製品Ｗ２を載置し、パンチ１
Ｇをト降させ、パンチ１６とパッド１８間で中間製品Ｗ
２を挟圧してウコーブ１３の変化部１５を形成する。こ
のどさフランジ１４は、パンチ１６の外側面とグー（２
０の内側面間に閉じた状態におかれ、湾曲、しわの発生
が抑制されている。りなわら、第１図のような従来の曲
げ加」二方法で発生しＣいた伸び゛フラン９面４Ｃの湾
曲５および縮み７ランジ而４ｄに発生していたしわ６、
湾曲７は、本発明方法による最終製品Ｗ３には発生しな
い。Using the apparatus shown in FIG. 5, the intermediate product W2 in FIG. 7 to the final product W3 in FIG. 8 are pressed and bent. This is the second step. In the second step, ;1: Zu die 20
Place the intermediate product W2 on the pad 18'' between the holes and punch 1.
G is lowered and the intermediate product W is produced between the punch 16 and the pad 18.
2 is compressed to form the changing portion 15 of the U-cove 13. This dossa flange 14 is connected to the outer surface of the punch 16 and the goo (2
0 is placed in a closed state between the inner surfaces, and the occurrence of curvature and wrinkles is suppressed. However, as shown in Fig. 1, wrinkles 6, which were generated in the two conventional bending methods, were caused by the curvature 5 on the surface 4C of the elongated flange 9, and the wrinkles 6, which were generated in the flange 4d due to the shrinkage 7.
Curvature 7 does not occur in the final product W3 according to the method of the invention.
これによって第８図に承りような、湾曲、しわの４【い
最終製品Ｗ３が得られる。As a result, a curved and wrinkled final product W3 as shown in FIG. 8 is obtained.
以上説明したように、本発明のプレス品の曲げ加工方法
に４３いＣは、従来Ｉ ＩＩ−稈でおこなっていたプレ
ス品の曲げ加工を二つの工程に分り、第一１程目で断面
−１字状の真直製品を成形し、第二工稈目でフランジを
閉じた状態にしてウエノに曲げ加−にを施りようにした
ので、本発明の方法によるときは、製品の湾曲、しわの
発生を防ｌＬでき、かつ製品の湾曲、しわの発４トに伴
なう金型のかじりも防止できるという効果が得られる。As explained above, the 43C of the method for bending pressed products of the present invention is that the bending of pressed products, which was conventionally performed using I II-culm, is divided into two steps, and the cross-sectional Since a straight product in the shape of a single character is formed, and the flange is closed at the second culm, bending is applied to the Ueno. This has the effect that it is possible to prevent the occurrence of wrinkles, and also to prevent galling of the mold accompanying the curvature of the product and the formation of wrinkles.
第１図は従来のプレス品の曲げ加工方法を示す装置の斜
視図、
第２図は第１図の装置を用いた曲げ加」ニされた従来の
プレス品の最終製品段階の斜視図、第３図は第２図のプ
レス品の伸びフランジ部の断面図、
第４図は本発明のプレス品の曲げ力Ｌ［方法の第一工程
を示′８１装置の斜視図、
第５図は本発明のプレス品の曲げ加工方法の第二工程を
示１装置の斜視図、
第１
第６図は第４図ｄ３Ｊ、び第５図のＨ同を用いで曲げ加
工される液加」一部材の斜視図、第７図は第６図の液加
］一部伺を第４図の共同を用いＣブレス成形した中間製
品の斜視図、第８図（ま第７図の中間製品を第５図のｖ
ｉ問を用い−Ｃブレス成形した最終製品の斜視図、であ
る。
１０．１６・・・・・・・・・パンチ
１１．１８・・・・・・・・・パッド
１２．２０・・・・・・・・・ダイ
１３・・・・・・・・・ウェブ
１４・・・・・・・・・フランジ
１５・・・・・・・・・変化部
′１７．１９・・・・・・・・・変化形状Ｗ１・・・・
・・・・・被加工部材
Ｗ２・・・・・・・・・中間製品
Ｗ３・・・・・・・・・最終製品
図Fig. 1 is a perspective view of a device showing a conventional method for bending pressed products; Fig. 2 is a perspective view of the final product stage of a conventional press product that has been bent using the device shown in Fig. 1; 3 is a sectional view of the stretch flange portion of the pressed product shown in FIG. The second step of the bending method for pressed products of the invention is shown. 1 is a perspective view of the apparatus. Figure 7 is a perspective view of an intermediate product formed by C-press molding using the press shown in Figure 4. v in the diagram
FIG. 2 is a perspective view of a final product formed by C-press molding using I-C press. 10.16... Punch 11.18 Pad 12.20 Die 13 Web 14...Flange 15...Change part'17.19...Change shape W1...
...Workpiece W2...Intermediate product W3...Final product diagram
Claims (1)
化する最終製品にプレス加工覆る曲げ加工方法におい”
（、前記平板をまずコ字払の断面を有するウェブ面の真
直な中間製品にプレス成形し、しかる後該中間製品をつ
上ブ面が変化づる最終製品にプレス加工することを特徴
どするプレス品の曲げ加工方法。(1) The bending method involves pressing the deck into a final product with a letter-shaped cross section and changing the shape of one surface.
(A press characterized in that the flat plate is first press-formed into an intermediate product with a straight web surface having a U-shaped cross section, and then the intermediate product is press-formed into a final product with a varying upper web surface. How to bend the product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18212582A JPS5973120A (en) | 1982-10-19 | 1982-10-19 | Bending method of pressed article |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18212582A JPS5973120A (en) | 1982-10-19 | 1982-10-19 | Bending method of pressed article |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5973120A true JPS5973120A (en) | 1984-04-25 |
Family
ID=16112762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18212582A Pending JPS5973120A (en) | 1982-10-19 | 1982-10-19 | Bending method of pressed article |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5973120A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006198639A (en) * | 2005-01-19 | 2006-08-03 | Toyota Motor Corp | Work made of metal plate and method for working frame shape |
| JP2010064139A (en) * | 2008-09-12 | 2010-03-25 | Nippon Steel Corp | Multi-stage press forming method having excellent shape fixability |
| CN103611766A (en) * | 2013-11-15 | 2014-03-05 | 钱波 | Fitted-die roll bending and forming machine |
| US20150224563A1 (en) * | 2012-09-12 | 2015-08-13 | Nippon Steel & Sumitomo Metal Corporation | Method for producing curved part, and skeleton structure member of body shell of automobile |
| WO2016043280A1 (en) * | 2014-09-18 | 2016-03-24 | 新日鐵住金株式会社 | Method for manufacturing molded article, mold, and tubular molded article |
| WO2016079210A1 (en) * | 2014-11-18 | 2016-05-26 | Data M Sheet Metal Solutions Gmbh | Device and method for producing profiles |
| JP2020535971A (en) * | 2017-10-06 | 2020-12-10 | ティッセンクルップ スチール ヨーロッパ アクチェンゲゼルシャフトＴｈｙｓｓｅｎＫｒｕｐｐ Ｓｔｅｅｌ Ｅｕｒｏｐｅ ＡＧ | Methods and devices for making molded sheet metal parts with preformed parts |
| WO2024079349A1 (en) * | 2022-10-13 | 2024-04-18 | Cambridge Enterprise Limited | Working of sheet metal |
-
1982
- 1982-10-19 JP JP18212582A patent/JPS5973120A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006198639A (en) * | 2005-01-19 | 2006-08-03 | Toyota Motor Corp | Work made of metal plate and method for working frame shape |
| JP4645202B2 (en) * | 2005-01-19 | 2011-03-09 | トヨタ自動車株式会社 | Plate work and frame shape processing method |
| JP2010064139A (en) * | 2008-09-12 | 2010-03-25 | Nippon Steel Corp | Multi-stage press forming method having excellent shape fixability |
| US20150224563A1 (en) * | 2012-09-12 | 2015-08-13 | Nippon Steel & Sumitomo Metal Corporation | Method for producing curved part, and skeleton structure member of body shell of automobile |
| US10179360B2 (en) * | 2012-09-12 | 2019-01-15 | Nippon Steel & Sumitomo Metal Corporation | Method for producing curved part, and skeleton structure member of body shell of automobile |
| CN103611766A (en) * | 2013-11-15 | 2014-03-05 | 钱波 | Fitted-die roll bending and forming machine |
| CN106715000A (en) * | 2014-09-18 | 2017-05-24 | 新日铁住金株式会社 | Method for manufacturing molded article, mold, and tubular molded article |
| KR20170041871A (en) * | 2014-09-18 | 2017-04-17 | 신닛테츠스미킨 카부시키카이샤 | Method for manufacturing molded article, mold, and tubular molded article |
| JPWO2016043280A1 (en) * | 2014-09-18 | 2017-07-27 | 新日鐵住金株式会社 | Method for manufacturing molded product, mold, and tubular molded product |
| US20170274434A1 (en) * | 2014-09-18 | 2017-09-28 | Nippon Steel & Sumitomo Metal Corporation | Method of producing shaped article, tooling, and tubular shaped article |
| RU2673365C2 (en) * | 2014-09-18 | 2018-11-26 | Ниппон Стил Энд Сумитомо Метал Корпорейшн | Method of manufacturing molded product, tool equipment and product of tubular form |
| WO2016043280A1 (en) * | 2014-09-18 | 2016-03-24 | 新日鐵住金株式会社 | Method for manufacturing molded article, mold, and tubular molded article |
| JP2019022912A (en) * | 2014-09-18 | 2019-02-14 | 新日鐵住金株式会社 | Production method of molding, and mold |
| CN106715000B (en) * | 2014-09-18 | 2020-03-31 | 日本制铁株式会社 | Method for manufacturing molded article, metal mold, and tubular molded article |
| US11148183B2 (en) | 2014-09-18 | 2021-10-19 | Nippon Steel Corporation | Method of producing shaped article, tooling, and tubular shaped article |
| WO2016079210A1 (en) * | 2014-11-18 | 2016-05-26 | Data M Sheet Metal Solutions Gmbh | Device and method for producing profiles |
| CN107000013A (en) * | 2014-11-18 | 2017-08-01 | 金属板材技术解决方案股份有限公司 | Apparatus and method for manufacturing section bar |
| JP2020535971A (en) * | 2017-10-06 | 2020-12-10 | ティッセンクルップ スチール ヨーロッパ アクチェンゲゼルシャフトＴｈｙｓｓｅｎＫｒｕｐｐ Ｓｔｅｅｌ Ｅｕｒｏｐｅ ＡＧ | Methods and devices for making molded sheet metal parts with preformed parts |
| WO2024079349A1 (en) * | 2022-10-13 | 2024-04-18 | Cambridge Enterprise Limited | Working of sheet metal |
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