JPS6344451B2 - - Google Patents
Info
- Publication number
- JPS6344451B2 JPS6344451B2 JP60297577A JP29757785A JPS6344451B2 JP S6344451 B2 JPS6344451 B2 JP S6344451B2 JP 60297577 A JP60297577 A JP 60297577A JP 29757785 A JP29757785 A JP 29757785A JP S6344451 B2 JPS6344451 B2 JP S6344451B2
- Authority
- JP
- Japan
- Prior art keywords
- sheet metal
- bent
- metal members
- bending
- shape
- 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
Links
- 239000002184 metal Substances 0.000 claims description 27
- 238000005452 bending Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 8
- 238000009957 hemming Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
Landscapes
- Bending Of Plates, Rods, And Pipes (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
この発明は板金部材の端部をＵ形に折曲げるヘ
ミング加工に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a hemming process for bending an end of a sheet metal member into a U shape.
従来の技術
自動車の車体を構成する部品の多くは２枚の板
金部材で構成され、両板金部材の端部を重ね合わ
せて結合させてボツクス断面に構成されている。
例えば自動車のバツクドア１は第３図及び第４図
に示す様に、２枚の板金部材、例えば内板２と外
板３とからなり、外板３の端部３ａをヘミング加
工を施してＵ形に折曲げて内板２の端部２ａを包
込んで挾持させ、これにより両者を結合させてい
る。BACKGROUND OF THE INVENTION Most of the parts constituting the body of an automobile are composed of two sheet metal members, and the ends of the two sheet metal members are overlapped and bonded to form a box cross section.
For example, as shown in FIGS. 3 and 4, the back door 1 of an automobile is made up of two sheet metal members, for example, an inner panel 2 and an outer panel 3. The end portion 3a of the outer panel 3 is hemmed to form a U It is bent into a shape to wrap around and sandwich the end 2a of the inner plate 2, thereby joining the two.
前記ヘミング加工は、第５図及び第６図に示す
様に、外板３の端部３ａを先ずプレスにより直角
に折曲げ、続いて外板３の内側へ内板２の端部２
ａを重ね合わせ、外板３の端部３ａを内板２の内
側へ折曲げて行つている。 In the hemming process, as shown in FIG. 5 and FIG.
a are placed one on top of the other, and the end portion 3a of the outer plate 3 is bent to the inside of the inner plate 2.
発明が解決しようとする課題
従来のヘミング加工では、外板３の端部３ａを
直角に折曲げる場合には、プレス型による外板３
の押えが確実に作用するので前記端部３ａを正確
に折曲げることができる。しかし、その内板２の
端部２ａを重ね合わせてＵ形に折曲げる際には外
板３の押えが不十分となり、外板３の折曲げ点３
a′が内板２側に引張られて一定せず、波打ちを生
じるといつた問題があつた。また外板３の折曲げ
点が波打ちを生じていると、車体へ組付けた際、
バツクドア１の周縁と車体との間の隙間が一定せ
ず、見栄えが悪かつた。Problems to be Solved by the Invention In conventional hemming processing, when the end portion 3a of the outer panel 3 is bent at a right angle, the outer panel 3 is bent using a press die.
Since the presser foot works reliably, the end portion 3a can be accurately bent. However, when the ends 2a of the inner plates 2 are overlapped and bent into a U shape, the outer plate 3 is not sufficiently held down, and the bending point 2a of the outer plate 3 is
There was a problem that a' was pulled toward the inner plate 2 and was not constant, resulting in waving. Also, if the bending point of the outer panel 3 is wavy, when assembled to the vehicle body,
The gap between the periphery of the back door 1 and the vehicle body was inconsistent, resulting in a poor appearance.
課題を解決するための手段
この発明は、結合される２枚の板金部材中のい
ずれか一方の板金部材の端部をＵ形に折曲げて他
方の板金部材の端部を包込んで挾持することによ
り両板金部材を結合するヘミング加工において、
上記一方の板金部材の端部を直角に折曲げ、か
つ、この折曲げと同時に折曲部の外面を加圧し
て、上記両板金部材の夫々の板厚の和に略等しい
長さの薄肉部を形成し、しかる後、この薄肉部を
基準として一方の板金部材の端部をＵ形に折曲げ
るようにしたものである。Means for Solving the Problems This invention involves bending the end of one of the two sheet metal members to be joined into a U shape and wrapping and holding the end of the other sheet metal member. In the hemming process for joining both sheet metal members, the end of one of the sheet metal members is bent at right angles, and at the same time as this bending, pressure is applied to the outer surface of the bent part to separate each of the two sheet metal members. A thin wall portion having a length approximately equal to the sum of the plate thicknesses is formed, and then the end of one of the sheet metal members is bent into a U shape using this thin wall portion as a reference.
作 用
この発明は、２枚の板金部材中のいずれか一方
の板金部材の端部を直角に折曲げ、かつ、この折
曲げと同時に折曲部の外面を加圧して、２枚の板
金部材の夫々の板厚の和に略等しい長さの薄肉部
を形成することにより、Ｕ形への折曲げ時、支持
が不十分であつても前記薄肉部が基準となつて折
曲がるので、板金部材の折曲げ点が直線状に整形
され、板金部品の周縁部がきれいになる。Effect This invention bends the end of one of the two sheet metal members at right angles, and pressurizes the outer surface of the bent portion at the same time as the bending. By forming a thin part with a length approximately equal to the sum of the thicknesses of each sheet metal, when bending the sheet metal into a U shape, even if the support is insufficient, the thin part will be used as a reference to bend the sheet metal. The bending point of the member is shaped into a straight line, and the periphery of the sheet metal part is clean.
実施例
第１図及び第２図は本発明の一実施例を示す図
面で、バツクドアを適用した場合を示す。同図に
示す様に、２枚の板金部材、例えば内板１０と外
板１１とからなる板金部品を結合する際、先ず外
板１１の端部１１ａをプレスにより直角に折曲
げ、且つ折曲げと同時に前記端部１１ａの折曲部
近傍１２を板厚方向に加圧してその板厚を僅かに
薄くする。この薄肉部１２は、厚みを外板１１の
板厚ｔより約0.2mm程薄くし、且つ長さｌを外板
１１の板厚ｔと内板１０の板厚t2との和に略等し
い長さに設定しておく。この加圧はプレスの上型
に対応する突起等を形成しておけばよい。次に外
板１１の内側に内板１０の端部１０ａを重ね合わ
せた後プレスにより外板１１の端部１１ａをＵ形
に折曲げて内板１０の端部１０ａの内側に重ねて
これを包込むように挾持させて両者を結合させ
る。Embodiment FIGS. 1 and 2 are drawings showing an embodiment of the present invention, in which a back door is applied. As shown in the figure, when joining two sheet metal parts, for example, an inner plate 10 and an outer plate 11, the end portion 11a of the outer plate 11 is first bent at a right angle using a press. At the same time, pressure is applied in the direction of the plate thickness near the bent portion 12 of the end portion 11a to make the plate thickness slightly thinner. This thin section 12 has a thickness approximately 0.2 mm thinner than the thickness t of the outer panel 11, and a length l approximately equal to the sum of the thickness t of the outer panel 11 and the thickness t2 of the inner panel 10. Set the length. This pressure may be applied by forming a corresponding projection or the like on the upper die of the press. Next, after overlapping the end portion 10a of the inner plate 10 on the inside of the outer plate 11, the end portion 11a of the outer plate 11 is bent into a U shape using a press, and is overlapped inside the end portion 10a of the inner plate 10. Wrap them together to join them together.
上記の如き折曲げでは、外板１１の端部１１ａ
をＵ形に折曲げるとき、薄肉部１２が他よりも僅
かに強度が劣るので当該薄肉部１２から折曲がる
ことになり、折曲点１３が常に一定となる。従つ
て外板１１の周縁部は直線状に整形される。 In the above-mentioned bending, the end portion 11a of the outer panel 11
When bending into a U shape, the thin part 12 is slightly weaker than the others, so the bend starts from the thin part 12, and the bending point 13 is always constant. Therefore, the peripheral edge of the outer plate 11 is shaped into a straight line.
尚、上記実施例では自動車のバツクドアに適用
した場合を示したが、他のドア等にも適用でき、
さらに自動車の部品以外にも広く適用できる。 In addition, although the above embodiment shows the case where it is applied to the back door of a car, it can also be applied to other doors etc.
Furthermore, it can be applied to a wide range of applications other than automobile parts.
発明の効果
この発明によれば、板金部材の端部を折曲成形
する際、同時に折曲部に薄肉部を形成することが
できるので、予め板金部材に薄肉部を形成する手
間を省くことができ、作業性がきわめて良好であ
る。しかも、上記薄肉部は、２枚の板金部材の
夫々の板厚の和に略等しい長さに形成してあるの
で、板金部材の端部をＵ形に折曲げた際、折曲げ
点を直線状に整形することができる。したがつ
て、自動車のドア等に適用すれば、ドアの周縁部
がきれいに整形され、車体との隙間を一定にでき
るので見栄えも大幅に向上する。Effects of the Invention According to the present invention, when the end portion of a sheet metal member is bent and formed, a thin wall portion can be formed at the bent portion at the same time, so it is possible to save the effort of forming a thin wall portion on the sheet metal member in advance. The workability is extremely good. Moreover, since the thin-walled portion is formed to have a length approximately equal to the sum of the thicknesses of the two sheet metal members, when the end of the sheet metal member is bent into a U shape, the bending point is aligned with a straight line. It can be shaped into a shape. Therefore, when applied to automobile doors, etc., the peripheral edge of the door can be neatly shaped and the gap with the vehicle body can be kept constant, so that the appearance can be greatly improved.
第１図及び第２図は本発明方法を説明するため
の要部断面図、第３図は自動車のバツクドアの斜
視図、第４図は第３図Ａ−Ａ線拡大断面図、第５
図及び第６図は従来のヘミング加工を説明する要
部断面図である。
１０……内板、１１……外板、１２……薄肉
部。
1 and 2 are sectional views of essential parts for explaining the method of the present invention, FIG. 3 is a perspective view of a back door of an automobile, FIG. 4 is an enlarged sectional view taken along line A-A in FIG. 3, and FIG.
FIG. 6 is a sectional view of a main part of the conventional hemming process. 10...Inner plate, 11...Outer plate, 12...Thin wall portion.
Claims (1)
の板金部材の端部をＵ形に折曲げて他方の板金部
材の端部を包込んで挾持することにより両板金部
材を結合するヘミング加工において、 上記一方の板金部材の端部を直角に折曲げ、か
つ、この折曲げと同時に折曲部の外面を加圧し
て、上記両板金部材の夫々の板厚の和に略等しい
長さの薄肉部を形成し、しかる後、この薄肉部を
基準として一方の板金部材の端部をＵ形に折曲げ
るようにしたことを特徴とする板金部品の端部の
ヘミング加工方法。[Scope of Claims] 1. By bending the end of one of the two sheet metal members to be joined into a U shape and wrapping and holding the end of the other sheet metal member, both sheet metal members can be combined. In the hemming process for joining parts, the end of one of the sheet metal members is bent at right angles, and at the same time as the bending, pressure is applied to the outer surface of the bent part, so that the sum of the thicknesses of the two sheet metal members is A hemming process for an end of a sheet metal part, characterized in that a thin wall part having a length approximately equal to is formed, and then the end of one sheet metal member is bent into a U shape using this thin wall part as a reference. Method.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29757785A JPS62151227A (en) | 1985-12-25 | 1985-12-25 | Hemming method for end part of sheet metal parts |
| CN86108581.7A CN1003285B (en) | 1985-12-25 | 1986-12-25 | Curling method for edges of metal sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29757785A JPS62151227A (en) | 1985-12-25 | 1985-12-25 | Hemming method for end part of sheet metal parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62151227A JPS62151227A (en) | 1987-07-06 |
| JPS6344451B2 true JPS6344451B2 (en) | 1988-09-05 |
Family
ID=17848353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29757785A Granted JPS62151227A (en) | 1985-12-25 | 1985-12-25 | Hemming method for end part of sheet metal parts |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS62151227A (en) |
| CN (1) | CN1003285B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004039882A1 (en) * | 2004-08-17 | 2006-02-23 | Adam Opel Ag | Process for the production of automotive components |
| CN100342989C (en) * | 2004-09-02 | 2007-10-17 | 比亚迪股份有限公司 | Trimming method for non-vertical flanged and intersecting-line flanged product |
| DE102004046432A1 (en) * | 2004-09-24 | 2006-04-13 | Edag Engineering + Design Ag | Formation tool with rollers for producing rolled edge of road vehicle body panel has movable rollers turning back edge of outer panel over inner panel |
| CN101791646A (en) * | 2010-04-15 | 2010-08-04 | 上海交通大学 | Numerical control rolling pressing edge covering method used for automobile body components |
| CN102151735A (en) * | 2010-12-06 | 2011-08-17 | 天津市津兆机电开发有限公司 | Process method for realizing product edge circle rolling in moulds |
| FR2968224B1 (en) * | 2010-12-07 | 2013-08-23 | Valeo Systemes Thermiques | SET OF TWO PIECES SET ONE ON THE OTHER |
| CN102513429A (en) * | 2011-12-31 | 2012-06-27 | 长春大正博凯汽车设备有限公司 | Edge covering method of vehicle door frame |
| JP5868891B2 (en) * | 2012-05-29 | 2016-02-24 | Ｊｆｅスチール株式会社 | Manufacturing method of different diameter tubular parts |
| CN102814375B (en) * | 2012-07-19 | 2014-11-05 | 东莞市精丽制罐有限公司 | Curling mechanism for metal plate |
| JP6629891B2 (en) * | 2018-01-17 | 2020-01-15 | 株式会社Ｓｕｂａｒｕ | Press forming device and outer panel |
| CN114770964B (en) * | 2021-12-31 | 2023-11-21 | 赛尔富电子有限公司 | Aluminum bottom extrusion fixing device convenient for fixing parts |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5010766A (en) * | 1973-06-06 | 1975-02-04 |
-
1985
- 1985-12-25 JP JP29757785A patent/JPS62151227A/en active Granted
-
1986
- 1986-12-25 CN CN86108581.7A patent/CN1003285B/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5010766A (en) * | 1973-06-06 | 1975-02-04 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN86108581A (en) | 1987-11-25 |
| CN1003285B (en) | 1989-02-15 |
| JPS62151227A (en) | 1987-07-06 |
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