JPH1034255A - Hemming method - Google Patents

Hemming method

Info

Publication number
JPH1034255A
JPH1034255A JP19110696A JP19110696A JPH1034255A JP H1034255 A JPH1034255 A JP H1034255A JP 19110696 A JP19110696 A JP 19110696A JP 19110696 A JP19110696 A JP 19110696A JP H1034255 A JPH1034255 A JP H1034255A
Authority
JP
Japan
Prior art keywords
hem
panel
plate side
hemming
difference
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.)
Granted
Application number
JP19110696A
Other languages
Japanese (ja)
Other versions
JP3644466B2 (en
Inventor
Hiroaki Uchijima
島 宏 明 内
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP19110696A priority Critical patent/JP3644466B2/en
Publication of JPH1034255A publication Critical patent/JPH1034255A/en
Application granted granted Critical
Publication of JP3644466B2 publication Critical patent/JP3644466B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To prevent generation of defect in external appearance by arranging a difference in levels to a hem bending part of thick plate side and coinciding a hem bending curvature of thick plate side to a hem bending part of thin plate side so as to eliminate unevenness of an clearance, etc., whenever there is a difference in plate thicknesses. SOLUTION: At the side of a thin plate panel Pi2 of inner panel Pi, pressing is executed with using a hem pad 2 arranged with a normal flat plane shaped pressing face, the curvature radius R2 of hem bending part is turned to t2 /2+t3 . On the other hand, at the side of a thick plate panel Pi1, because a difference in level part 2a corresponding to a plate thickness difference t1 -t2 between the thick plate panel Pi1 and thin plate panel Pi2 is formed t the pressing face of a hem pad 2, the curvature radius R1 of hem bending part, resulting from that a tip part is crushed by the difference in levels part 2a of hem pad 2 to form a difference in levels D, is turned to t2 /2+t3 , that is equal to the curvature radius R2 of thin plate side. Thus, unevenness of clearance and incontinuousness of hemming part are eliminated.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、例えば自動車のド
アやフードの組立てにおいて、アウタパネルとインナパ
ネルとを接合するのに用いられるヘミング加工に係わ
り、とくにアウタパネルあるいはインナパネルに板厚差
がある場合に適用されるヘミング加工方法に関するもの
である。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hemming process used for joining an outer panel and an inner panel, for example, in assembling a door or a hood of an automobile, particularly when there is a difference in thickness between the outer panel and the inner panel. The present invention relates to a hemming processing method applied to a method.

【0002】[0002]

【従来の技術】ヘミング加工は、はぜ折りとも称せら
れ、板材の縁部を滑らかにし、強度アップを図るため、
一方の板材の周縁部を他方の板材に対して180°折り
返して密着曲げすることにより両板材を一体化するもの
であり、上記のように、自動車のドアやフード、トラン
クリッドなどの組立てに広く利用されている。
2. Description of the Related Art Hemming is also referred to as fold folding, in order to smooth the edges of a plate material and increase strength.
The peripheral portion of one plate is folded 180 ° against the other plate and is tightly bent to integrate the two plates, and as described above, is widely used for assembling doors, hoods, trunk lids, etc. of automobiles. It's being used.

【0003】このようなヘミング加工において、図10
に示すように、例えば、インナパネルPiが板厚の異な
るPi1 (板厚:t1 )とPi2 (板厚:t2 )とが例
えばレーザ溶接によって接合されたものであるとき、ア
ウタパネルPo(板厚:t3)を矢印に示すように折り
返してヘミング加工を行った場合、図11に示すように
厚板側のヘム曲げ曲率R1 (=t1 /2+t3 )と薄板
側のヘム曲げ曲率R2(=t2 /2+t3 )との間に差
が生じるため、インナパネルPiの段違い部Sから適当
な範囲Tの間で曲率半径を徐々に減じ、これによってヘ
ム曲げ曲率をR1 からR2 に連続的に変化させるように
していた。
In such a hemming process, FIG.
As shown in, for example, different inner panel Pi is the thickness Pi1 (thickness: t 1) and Pi2 (thickness: t 2) when the but those joined for example by laser welding, the outer panel Po (leaf thickness: t 3) If the performed hemming folded as shown by the arrow, the curvature R1 (= t 1/2 + t 3 bending of thick plate side hem as shown in FIG. 11) and the sheet side of the hem bending curvature R2 a difference between a (= t 2/2 + t 3) occurs continuously gradually reducing the radius of curvature between the appropriate range T from uneven portion S of the inner panel Pi, which hem bending curvature from R1 by the R2 Had to be changed.

【0004】[0004]

【発明が解決しようとする課題】しかしながら、上記し
た従来のヘミング加工方法を外観品質が特に重要視され
る自動車のドアやフードなどの組立てに適用した場合、
インナパネルPiの板厚差によってヘム曲げ曲率が相違
するために、相手部材との隙間の不等感やヘム曲げ部の
不連続感、だれ感などを生じ、外観不具合を招くという
問題点があり、このような問題点を解消することが板厚
差のある板材のヘミング加工方法における課題となって
いた。なお、図10および図11においては、インナパ
ネルPiの側に板厚差がある場合を説明したが、アウタ
パネルPoの側に板厚差がある場合についても、全く同
様の問題がある。
However, when the above-mentioned conventional hemming method is applied to the assembly of doors and hoods of automobiles, where appearance quality is particularly important,
Since the hem bending curvature differs due to the difference in the thickness of the inner panel Pi, there is a problem that unequal feeling of a gap with a partner member, discontinuity of the hem bending portion, feeling of drooping, etc. are caused, and appearance defects are caused. However, solving such a problem has been an issue in a hemming method for a sheet material having a difference in sheet thickness. Although the case where there is a difference in plate thickness on the side of the inner panel Pi has been described with reference to FIGS. 10 and 11, the same problem occurs when there is a difference in plate thickness on the side of the outer panel Po.

【0005】[0005]

【発明の目的】本発明は、従来のヘミング加工における
上記課題に着目してなされたものであって、インナパネ
ルあるいはアウタパネルに板厚差があったとしても、隙
間の不等感や加工部分の不連続感、だれ感などを生じる
ことがなく、外観不良の発生を防止することができるヘ
ミング加工方法を提供することを目的としている。
SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems in the conventional hemming process. Even if there is a difference in the thickness of the inner panel or the outer panel, the unequal feeling of the gap and the processing of the processed portion are not considered. It is an object of the present invention to provide a hemming method capable of preventing occurrence of defective appearance without causing a sense of discontinuity, dripping, or the like.

【0006】[0006]

【課題を解決するための手段】本発明の請求項1に係わ
るヘミング加工方法は、実質的に均一な厚さを備えたア
ウタパネルと板厚差のあるインナパネルとを重ね合わ
せ、アウタパネルの周縁部をインナパネル側に折り返す
ヘミング加工を行うに際して、厚板側のヘム曲げ部分に
段差を設けて厚板側のヘム曲げ曲率を薄板側ヘム曲げ曲
率に一致させる構成としたことを特徴としており、請求
項1に係わるヘミング加工方法の実施態様として請求項
2に係わるヘミング加工方法は、インナパネルの厚板側
ヘムフランジトリムサイズを薄板側ヘムフランジトリム
サイズよりも短く設定する構成としたことを特徴として
おり、このようなヘミング加工方法の構成を前述した従
来の課題を解決するための手段としている。
According to a first aspect of the present invention, there is provided a hemming method, comprising: combining an outer panel having a substantially uniform thickness with an inner panel having a difference in plate thickness; When performing the hemming process of folding back to the inner panel side, a step is provided in the hem bending portion on the thick plate side so that the hem bending curvature on the thick plate side matches the hem bending curvature on the thin plate side, As an embodiment of the hemming method according to the first aspect, the hemming method according to the second aspect is characterized in that the thick side hem flange trim size of the inner panel is set shorter than the thin side hem flange trim size. Thus, such a configuration of the hemming processing method is used as means for solving the above-described conventional problem.

【0007】本発明の請求項3に係わるヘミング加工方
法は、実質的に均一な厚さを備えたアウタパネルと板厚
差のあるインナパネルとを重ね合わせ、アウタパネルの
周縁部をインナパネル側に折り返すヘミング加工を行う
に際して、薄板側のヘム曲げ部分に玉縁部を設けて薄板
側のヘム曲げ曲率を厚板側ヘム曲げ曲率に一致させる構
成とし、本発明の請求項4に係わるヘミング加工方法
は、板厚差のあるアウタパネルと実質的に均一な厚さを
備えたインナパネルとを重ね合わせ、アウタパネルの周
縁部をインナパネル側に折り返すヘミング加工を行うに
際して、薄板側のヘム曲げ部分に玉縁部を設けて薄板側
のヘム曲げ曲率を厚板側ヘム曲げ曲率に一致させる構成
とし、このようなヘミング加工方法の構成を前述した従
来の課題を解決するための手段としたことを特徴として
いる。
In a hemming method according to a third aspect of the present invention, an outer panel having a substantially uniform thickness is overlapped with an inner panel having a difference in plate thickness, and a peripheral portion of the outer panel is folded back toward the inner panel. The hemming method according to claim 4 of the present invention is configured such that when performing the hemming process, a bead portion is provided at a hem bending portion on the thin plate side so that the hem bending curvature on the thin plate side matches the hem bending curvature on the thick plate side. When the outer panel having a thickness difference and the inner panel having a substantially uniform thickness are overlapped, and the peripheral portion of the outer panel is folded back to the inner panel side, a bead is formed on the hem bending portion on the thin plate side. A portion is provided to match the hem bending curvature on the thin plate side to the hem bending curvature on the thick plate side, and the configuration of such a hemming method solves the above-mentioned conventional problems. It is characterized in that the means of the eye.

【0008】[0008]

【発明の効果】本発明の請求項1に係わるヘミング加工
方法においては、インナパネルの側に板厚差がある場合
に、厚板側ヘム曲げ部分の曲率を薄板側ヘム曲げ部分の
曲率に一致させるべく、厚板側のヘム曲げ部分に段差を
設けるようにしたことから、ヘム曲げ部分の曲率がその
全長にわたって等しくなり、相手部材との隙間の不等感
と共に、ヘミング加工部分の不連続感やだれ感を解消す
ることができ、外観不良の発生を防止することができる
という極めて優れた効果がもたらされる。また、当該ヘ
ミング加工方法の実施態様として請求項2に係わるヘミ
ング加工方法においては、インナパネルの厚板側ヘムフ
ランジトリムサイズを薄板側のそれよりも短くなるよう
に設定しているので、上記効果に加えて、厚板側ヘム曲
げ部分における段差形成が円滑に行われると共に、薄板
側インナパネルの先端部のごく近傍部においてアウタパ
ネルが折り返されることになるので薄板側ヘム曲げ部分
の強度および当該部分の接合強度を向上させることがで
きるという効果がもたらされる。
In the hemming method according to the first aspect of the present invention, when there is a difference in plate thickness on the inner panel side, the curvature of the hemmed portion on the thick plate side matches the curvature of the hemmed portion on the thin plate side. In order to make the hem bent portion of the thick plate side have a step, the curvature of the hem bent portion becomes equal over its entire length, and the gap between the hem bent portion and the mating member and the discontinuity of the hemmed portion are reduced. An extremely excellent effect that a drooling feeling can be eliminated and occurrence of poor appearance can be prevented is brought about. Further, in the hemming method according to claim 2 as an embodiment of the hemming method, the hem flange trim size on the thick plate side of the inner panel is set to be shorter than that on the thin plate side. In addition to this, the step formation in the thick plate side hem bent portion is performed smoothly, and the outer panel is folded back very near the tip portion of the thin plate side inner panel, so the strength of the thin plate side hem bent portion and the corresponding portion Has the effect of improving the bonding strength.

【0009】また、本発明の請求項3に係わるヘミング
加工方法においては、同じくインナパネルの側に板厚差
がある場合に、薄板側ヘム曲げ部分の曲率を厚板側ヘム
曲げ部分の曲率に一致させるべく、薄板側のヘム曲げ部
分に玉縁部を設けるようにしたことから、請求項1に係
わるヘミング加工方法と同様に、ヘム曲げ部分の曲率が
その全長にわたって等しくなり、相手部材との隙間の不
等感や、ヘミング加工部分の不連続感やだれ感を解消す
ることができ、ヘム曲げ部分の外観を向上させることが
できるという極めて優れた効果がもたらされる。
Further, in the hemming method according to claim 3 of the present invention, when there is a difference in plate thickness on the inner panel side, the curvature of the thin plate side hem bent portion is changed to the curvature of the thick plate side hem bent portion. In order to make them coincide with each other, a bead portion is provided in the hem bent portion on the thin plate side. Therefore, similarly to the hemming method according to claim 1, the curvature of the hem bent portion becomes equal over the entire length, and the hem bent portion has the same curvature as the mating member. It is possible to eliminate the unequal feeling of the gap, the discontinuous feeling and the drooping feeling of the hemmed part, and to provide an extremely excellent effect that the appearance of the hemmed part can be improved.

【0010】さらに、本発明の請求項4に係わるヘミン
グ加工方法においては、アウタパネルの側に板厚差があ
る場合に、薄板側ヘム曲げ部分の曲率を厚板側ヘム曲げ
部分の曲率に一致させるべく、薄板側のヘム曲げ部分に
玉縁部を設けるようにしているので、請求項1および請
求項2に係わるヘミング加工方法と同様に、ヘム曲げ部
分の曲率がその全長にわたって等しくなることから、ヘ
ム曲げ部分の外観を向上させることができるという極め
て優れた効果がもたらされる。
Further, in the hemming method according to claim 4 of the present invention, when there is a difference in plate thickness on the outer panel side, the curvature of the thin plate side hem bent portion is made to match the curvature of the thick plate side hem bent portion. Therefore, since the bead portion is provided in the hem bent portion on the thin plate side, the curvature of the hem bent portion becomes equal over the entire length, similarly to the hemming method according to claim 1 and claim 2, An extremely excellent effect that the appearance of the hem bent portion can be improved is provided.

【0011】[0011]

【実施例】以下、本発明を図面に基づいて具体的に説明
する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the drawings.

【0012】実施例1 図1ないし図4は、本発明に係わるヘミング加工方法の
第1の実施例として、ドアパネルのヘミング加工要領を
示すものであって、この実施例においてはインナパネル
の側に板厚差がある場合について説明する。
Embodiment 1 FIGS. 1 to 4 show a hemming process of a door panel as a first embodiment of a hemming process according to the present invention. In this embodiment, the hemming process is performed on the inner panel side. The case where there is a difference in plate thickness will be described.

【0013】すなわち、この実施例においてインナパネ
ルPiは、図1に示すように、厚板パネルPi1 (板
厚:t1 )と薄板パネルPi2 (板厚:t2 )とをレー
ザ溶接によって接合したものであって、厚板パネルPi
1 のヘムフランジ部は、薄板パネルPi2 に比べて短く
トリミングされており、アウタパネルPoの折り曲げ部
からやや後退した位置に設定されている。一方、アウタ
パネルPoは、均一な厚さを備えた1枚の板材からなる
ものである。
[0013] That is, the inner panel Pi in this embodiment, as shown in FIG. 1, plank panel Pi1 (thickness: t 1) and the thin panel Pi2 (thickness: t 2) was a joined by laser welding And a thick panel Pi
The hem flange portion 1 is trimmed shorter than the thin panel Pi2, and is set at a position slightly retreated from the bent portion of the outer panel Po. On the other hand, the outer panel Po is made of a single plate having a uniform thickness.

【0014】厚板パネルPi1 と薄板パネルPi2 から
なるインナパネルPiは、アウタパネルPo(板厚:t
3 )の周縁部、すなわちヘミングフランジ部がほぼ90
°に折り曲げられた状態で、アウタパネルPoに重ねら
れる。そして、アウタパネルPoのヘミングフランジ部
がさらに45°程度までプリヘミング加工された後、ア
ウタパネルPoと共にヘミングマシンのヘムダイ1にセ
ットされ、図2に示すように、アウタパネルPoのヘミ
ングフランジ部がインナパネルPiに密着するまで、ヘ
ムパッド2によって加圧され、これによって図3および
図4に示すようなヘム曲げ部が形成される。
An inner panel Pi composed of a thick panel Pi1 and a thin panel Pi2 is an outer panel Po (plate thickness: t
3 ) The periphery, ie, the hemming flange, is almost 90
In a state of being bent at an angle, it is overlaid on the outer panel Po. Then, after the hemming flange portion of the outer panel Po is further pre-hemmed to about 45 °, the hemming flange portion of the outer panel Po is set on the hemming die 1 of the hemming machine together with the outer panel Po, as shown in FIG. The hem is pressed by the hem pad 2 until it comes into close contact with the hem, thereby forming a hem bent portion as shown in FIGS.

【0015】このとき、インナパネルPiの薄板パネル
Pi2 の側においては、図2(a)に示すように、通常
の平面状の加圧面を備えたヘムパッド2によって加圧さ
れ、ヘム曲げ部の曲率半径R2 は、t2 /2+t3 とな
る。
At this time, on the side of the thin panel Pi2 of the inner panel Pi, as shown in FIG. 2A, pressure is applied by a hem pad 2 having a normal flat pressing surface, and the curvature of the hem bent portion is increased. radius R2 becomes t 2/2 + t 3.

【0016】これに対して、厚板パネルPi1 の側にお
いては、図2(b)に示すように、ヘムパッド2の加圧
面に、厚板パネルPi1 と薄板パネルPi2 の板厚差、
すなわちt1 −t2 に相当する段差部2aが形成されて
いるので、ヘム曲げ部の曲率半径R1 は、t1 /2+t
3 となるべきところ、ヘムパッド2の段差部2aによっ
て先端部が押し潰されて段差Dが形成される結果、t2
/2+t3 、すなわち薄板側の曲率半径R2 と等しくな
る。
On the other hand, on the side of the thick panel Pi1, as shown in FIG. 2B, the difference in thickness between the thick panel Pi1 and the thin panel Pi2 is applied to the pressing surface of the hem pad 2.
That is, since the step portion 2a, which corresponds to t 1 -t 2 is formed, the curvature radius R1 of the hem bends, t 1/2 + t
Where the value should be 3 , the tip portion is crushed by the step portion 2a of the hem pad 2 and a step D is formed. As a result, t 2
/ 2 + t 3 , that is, the radius of curvature R2 on the thin plate side.

【0017】したがって、相手部材との隙間の不等感や
ヘミング加工部分の不連続感などが解消され、当該加工
部分の外観を向上させることができる。
Therefore, the unequal feeling of the gap with the mating member and the discontinuity of the hemmed part are eliminated, and the appearance of the processed part can be improved.

【0018】実施例2 図5および図6は、本発明に係わるヘミング加工方法の
第2の実施例として、ドアパネルのヘミング加工要領を
示すものであって、上記実施例と同様にインナパネルの
側に板厚差がある場合について説明する。
Embodiment 2 FIGS. 5 and 6 show a hemming process of a door panel as a second embodiment of the hemming process according to the present invention. The case where there is a difference in plate thickness will be described.

【0019】この実施例においてインナパネルPiは、
図1と同様に、厚板パネルPi1 (板厚:t1 )と薄板
パネルPi2 (板厚:t2 )とをレーザ溶接によって接
合したものであるが、この実施例においては、厚板パネ
ルPi1 のヘムフランジ部を薄板パネルPi2 に比べて
短くトリミングする必要はなく、先端部を同じ長さに揃
えることができる。アウタパネルPoは、同様に均一な
厚さ(板厚:t3 )を備えた1枚の板材からなるもので
ある。
In this embodiment, the inner panel Pi is
Similar to FIG. 1, plank panel Pi1 (thickness: t 1) and the thin panel Pi2 (thickness: t 2) and is the one in which is joined by laser welding, in this embodiment, plank panel Pi1 It is not necessary to trim the hem flange portion shorter than the thin panel Pi2, and the tip portions can be made equal in length. The outer panel Po is also made of a single plate having a uniform thickness (plate thickness: t 3 ).

【0020】アウタパネルPoは、実施例1と同様に、
ヘミングフランジ部がほぼ90°に折り曲げられた状態
で、インナパネルPiが載置され、さらに45°程度ま
でプリヘミング加工された後、インナパネルPiと共に
ヘミングマシンのヘムダイ1にセットされ、図5に示す
ように、アウタパネルPoが、インナパネルPiを形成
する厚板パネルPi1 と薄板パネルPi2 に密着するま
で、ヘムパッド2によって加圧され、これによって図6
に示すようなヘム曲げ部が形成される。
The outer panel Po is, as in the first embodiment,
The inner panel Pi is placed in a state where the hemming flange portion is bent at almost 90 °, and after preheming is further performed to about 45 °, the inner panel Pi is set together with the inner panel Pi on the hem die 1 of the hemming machine. As shown, the outer panel Po is pressed by the hem pad 2 until it comes into close contact with the thick panel Pi1 and the thin panel Pi2 forming the inner panel Pi.
As shown in FIG.

【0021】このとき、インナパネルPiの厚板パネル
Pi1 の側においては、図5(b)に示すように、平面
状加圧面を備えたヘムパッド2によって加圧されるの
で、ヘム曲げ部の曲率半径R1 は、t1 /2+t3 とな
る。
At this time, on the side of the thick panel Pi1 of the inner panel Pi, as shown in FIG. 5 (b), pressure is applied by the hem pad 2 having a flat pressing surface. radius R1 becomes t 1/2 + t 3.

【0022】これに対して、薄板パネルPi2 の側にお
いては、図5(a)に示すように、ヘムパッド2の加圧
面に、厚板パネルPi1 と薄板パネルPi2 の板厚差、
すなわちt1 −t2 に相当する段差部2bが形成されて
いるので、ヘム曲げ部の曲率半径R2 は、t2 /2+t
3 となるべきところ、ヘムパッド2の段差部2bによっ
て先端部に玉縁部Eが形成される結果、t1 /2+
3 、すなわち厚板側の曲率半径R1 に一致することに
なる。
On the other hand, on the side of the thin panel Pi2, as shown in FIG. 5 (a), the thickness difference between the thick panel Pi1 and the thin panel Pi2 is applied to the pressing surface of the hem pad 2.
That is, since the step portion 2b corresponding to t 1 -t 2 is formed, the radius of curvature R2 of the hem bends, t 2/2 + t
3 and to place consisting, results welt portion E is formed at the tip portion by the step portion 2b of Hemupaddo 2, t 1/2 +
t 3 , that is, the radius of curvature R1 on the thick plate side.

【0023】したがって、上記実施例1と同様に、隙間
の不等感やヘミング加工部分の不連続感、だれ感などが
解消され、当該ヘミング加工部分の外観を向上させるこ
とができる。
Accordingly, similarly to the first embodiment, the unequal feeling of the gap, the discontinuity of the hemmed portion, the dripping feeling, and the like are eliminated, and the appearance of the hemmed portion can be improved.

【0024】実施例3 図7ないし図9は、本発明に係わるヘミング加工方法の
第3の実施例として、トランクリッドのヘミング加工要
領を示すものであって、この実施例においてはアウタパ
ネルの側に板厚差がある場合について説明する。
Embodiment 3 FIGS. 7 to 9 show the procedure of hemming a trunk lid as a third embodiment of the hemming method according to the present invention. In this embodiment, the hemming process is performed on the outer panel side. The case where there is a difference in plate thickness will be described.

【0025】すなわち、この実施例においてインナパネ
ルPiは、図7に示すように、均一な厚さ(板厚:
4 )を有する1枚の板材からなるものであり、一方、
アウタパネルPoは、厚板パネルPo1 (板厚:t5
と薄板パネルPo2 (板厚:t6)とをレーザ溶接によ
って接合したものである。
That is, in this embodiment, the inner panel Pi has a uniform thickness (plate thickness:
t 4 ), which consists of one sheet of material,
Outer panel Po is, plank panel Po1 (thickness: t 5)
A thin panel Po2 (thickness: t 6) and is obtained by bonding by laser welding.

【0026】厚板パネルPo1 と薄板パネルPo2 から
なるアウタパネルPoは、上記実施例1と同様に、周縁
部、すなわちヘミングフランジ部がほぼ90°に折り曲
げられた状態で、インナパネルPiが載置され、さらに
45°程度までプリヘミング加工された後、インナパネ
ルPiと共にヘミングマシンのヘムダイ1にセットさ
れ、図8に示すように、アウタパネルPoを形成する厚
板パネルPo1 と薄板パネルPo2 が、インナパネルP
iに密着するまで、ヘムパッド2によって加圧され、こ
れによって図7に示すようなヘム曲げ部が形成される。
As in the first embodiment, the outer panel Po composed of the thick panel Po1 and the thin panel Po2 has the inner panel Pi mounted thereon with the peripheral edge, that is, the hemming flange, bent at approximately 90 °. After the pre-hemming process is further performed to about 45 °, the inner panel Pi and the hemming die 1 of the hemming machine are set together. As shown in FIG. 8, the thick panel Po1 and the thin panel Po2 forming the outer panel Po are replaced with the inner panel Pi. P
Pressing is performed by the hem pad 2 until it comes into close contact with i, thereby forming a hem bent portion as shown in FIG.

【0027】このとき、アウタパネルPoの厚板パネル
Po1 の側においては、図8(b)に示すように、平面
状加圧面を備えたヘムパッド2によって加圧されるの
で、ヘム曲げ部の曲率半径R1 は、t4 /2+t5 とな
る。
At this time, as shown in FIG. 8B, the outer panel Po is pressurized by the hem pad 2 having the flat pressing surface on the side of the thick panel Po1. R1 is a t 4/2 + t 5.

【0028】これに対して、薄板パネルPo2 の側にお
いては、図8(a)に示すように、ヘムパッド2の加圧
面に、厚板パネルPo1 と薄板パネルPo2 の板厚差の
2倍、すなわち2(t5 −t6 )に相当する段差部2c
が形成されているので、ヘム曲げ部の曲率半径R2 は、
4 /2+t6 となるべきところ、ヘムパッド2の段差
部2cによって先端部に玉縁部Eが形成される結果、t
4 /2+t5 、すなわち厚板側の曲率半径R1 に一致す
ることになる。
On the other hand, on the side of the thin panel Po2, as shown in FIG. 8 (a), the pressing surface of the hem pad 2 has a thickness twice as large as the thickness difference between the thick panel Po1 and the thin panel Po2. 2 step portion 2c corresponding to (t 5 -t 6)
Is formed, the radius of curvature R2 of the hem bent portion is
when it should t 4/2 + t 6, a result of welt portion E is formed at the tip portion by the step portion 2c of Hemupaddo 2, t
4/2 + t 5, that is, it matches the radius of curvature R1 of the thick side.

【0029】したがって、上記実施例1あるいは実施例
2と同様に、相手部材との隙間の不等感やヘミング加工
部分の不連続感、だれ感などが解消され、当該ヘミング
加工部分の外観を向上させることができる。
Therefore, in the same manner as in the first or second embodiment, the unequal feeling of the gap with the counterpart member, the discontinuity of the hemmed portion, the dripping feeling, etc. are eliminated, and the appearance of the hemmed portion is improved. Can be done.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明に係わるヘミング加工方法の第1の実施
例におけるインナパネルおよびアウタパネルの形状を示
す斜視図である。
FIG. 1 is a perspective view showing a shape of an inner panel and an outer panel in a first embodiment of a hemming method according to the present invention.

【図2】(a) 図1に示した薄板側インナパネル部分
におけるヘム曲げ要領を示す断面図である。 (b) 図1に示した厚板側インナパネル部分における
ヘム曲げ要領を示す断面図である。
2 (a) is a cross-sectional view showing a hem bending procedure in a thin plate side inner panel portion shown in FIG. 1. FIG. (B) It is sectional drawing which shows the hemming procedure in the thick-plate side inner panel part shown in FIG.

【図3】図2に示した要領によるヘム曲げ部分の外観形
状を示す部分破断斜視図である。
FIG. 3 is a partially cutaway perspective view showing an external shape of a hem bent portion according to the procedure shown in FIG. 2;

【図4】(a) 図3に示したヘム曲げ部分の平面図で
ある。 (b) 図4(a)に示したヘム曲げ部分の厚板側にお
ける断面図である。 (c) 図4(a)に示したヘム曲げ部分の薄板側にお
ける断面図である。
FIG. 4A is a plan view of a hem bent portion shown in FIG. 3; (B) It is sectional drawing in the thick plate side of the hem bending part shown in FIG.4 (a). (C) It is sectional drawing in the thin plate side of the hem bending part shown in FIG.4 (a).

【図5】(a) 本発明に係わるヘミング加工方法の第
2の実施例における薄板側インナパネル部分のヘム曲げ
要領を示す断面図である。 (b) 本発明に係わるヘミング加工方法の第2の実施
例における厚板側インナパネル部分のヘム曲げ要領を示
す断面図である。
FIG. 5 (a) is a cross-sectional view showing a hem bending procedure of a thin plate side inner panel portion in a second embodiment of the hemming method according to the present invention. (B) It is sectional drawing which shows the hemming procedure of the thick-plate side inner panel part in the 2nd Example of the hemming working method concerning this invention.

【図6】(a) 図5に示した要領によるヘム曲げ部分
の外観形状を示す平面図である。 (b) 図6(a)に示したヘム曲げ部分の厚板側にお
ける断面図である。 (c) 図6(a)に示したヘム曲げ部分の薄板側にお
ける断面図である。
6 (a) is a plan view showing an external shape of a hem bent portion in the manner shown in FIG. (B) It is sectional drawing in the thick plate side of the hem bending part shown in FIG.6 (a). (C) It is sectional drawing in the thin plate side of the hem bending part shown in FIG.6 (a).

【図7】本発明に係わるヘミング加工方法の第3の実施
例におけるインナパネルおよびアウタパネルの形状を示
す斜視図である。
FIG. 7 is a perspective view showing the shapes of an inner panel and an outer panel in a third embodiment of the hemming method according to the present invention.

【図8】(a) 図7に示した薄板側アウタパネル部分
におけるヘム曲げ要領を示す断面図である。 (b) 図7に示した厚板側アウタパネル部分における
ヘム曲げ要領を示す断面図である。
8 (a) is a cross-sectional view showing the hem bending procedure in the thin plate side outer panel portion shown in FIG. 7; (B) It is sectional drawing which shows the hem bending point in the thick plate side outer panel part shown in FIG.

【図9】(a) 図8に示した要領によるヘム曲げ部分
の外観形状を示す平面図である。 (b) 図9(a)に示したヘム曲げ部分の厚板側にお
ける断面図である。 (c) 図9(a)に示したヘム曲げ部分の薄板側にお
ける断面図である。
9 (a) is a plan view showing an external shape of a hem bent portion in the manner shown in FIG. (B) It is sectional drawing in the thick plate side of the hem bending part shown in FIG.9 (a). (C) It is sectional drawing in the thin plate side of the hem bending part shown in FIG.9 (a).

【図10】インナパネルに板厚差がある場合の従来のヘ
ミング加工要領を示す斜視図である。
FIG. 10 is a perspective view showing a conventional hemming process when an inner panel has a difference in plate thickness.

【図11】(a) 図10に示した従来のヘミング加工
によるヘム曲げ部分の外観形状を示す平面図である。 (b) 図11(a)に示したヘム曲げ部分の厚板側に
おける断面図である。 (c) 図11(a)に示したヘム曲げ部分の薄板側に
おける断面図である。
11 (a) is a plan view showing an external shape of a hem bent portion formed by the conventional hemming process shown in FIG. (B) It is sectional drawing in the thick board side of the hem bending part shown in FIG.11 (a). (C) It is sectional drawing in the thin plate side of the hem bending part shown in FIG.11 (a).

【符号の説明】[Explanation of symbols]

Pi インナパネル Po アウタパネル R1 厚板側のヘム曲げ曲率半径 R2 薄板側のヘム曲げ曲率半径 D 段差 E 玉縁部 Pi Inner panel Po Outer panel R1 Hem bending radius of curvature of thick plate side R2 Hem bending radius of curvature of thin plate side D Step E Ball edge

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 実質的に均一な厚さを備えたアウタパネ
ルと板厚差のあるインナパネルとを重ね合わせ、アウタ
パネルの周縁部をインナパネル側に折り返すヘミング加
工を行うに際して、 厚板側のヘム曲げ部分に段差を設けて厚板側のヘム曲げ
曲率を薄板側ヘム曲げ曲率に一致させることを特徴とす
るヘミング加工方法。
1. A hemm on a thick plate side when performing hemming processing in which an outer panel having a substantially uniform thickness and an inner panel having a plate thickness difference are overlapped and a peripheral portion of the outer panel is folded back to the inner panel side. A hemming method characterized in that a step is provided in a bent portion so that a hem bending curvature on a thick plate side matches a hem bending curvature on a thin plate side.
【請求項2】 インナパネルの厚板側ヘムフランジトリ
ムサイズを薄板側ヘムフランジトリムサイズよりも短く
設定することを特徴とする請求項1記載のヘミング加工
方法。
2. The hemming method according to claim 1, wherein the hem flange trim size on the thick plate side of the inner panel is set shorter than the hem flange trim size on the thin plate side.
【請求項3】 実質的に均一な厚さを備えたアウタパネ
ルと板厚差のあるインナパネルとを重ね合わせ、アウタ
パネルの周縁部をインナパネル側に折り返すヘミング加
工を行うに際して、 薄板側のヘム曲げ部分に玉縁部を設けて薄板側のヘム曲
げ曲率を厚板側ヘム曲げ曲率に一致させることを特徴と
するヘミング加工方法。
3. A hemming process on a thin plate side when a hemming process is performed in which an outer panel having a substantially uniform thickness and an inner panel having a plate thickness difference are overlapped and a peripheral portion of the outer panel is folded back to the inner panel side. A hemming method comprising providing a bead portion at a portion to match the hem bending curvature on the thin plate side with the hem bending curvature on the thick plate side.
【請求項4】 板厚差のあるアウタパネルと実質的に均
一な厚さを備えたインナパネルとを重ね合わせ、アウタ
パネルの周縁部をインナパネル側に折り返すヘミング加
工を行うに際して、 薄板側のヘム曲げ部分に玉縁部を設けて薄板側のヘム曲
げ曲率を厚板側ヘム曲げ曲率に一致させることを特徴と
するヘミング加工方法。
4. A hemming process on a thin plate side when performing hemming processing in which an outer panel having a difference in plate thickness and an inner panel having a substantially uniform thickness are overlapped and a peripheral portion of the outer panel is folded back to the inner panel side. A hemming method comprising providing a bead portion at a portion to match the hem bending curvature on the thin plate side with the hem bending curvature on the thick plate side.
JP19110696A 1996-07-19 1996-07-19 Hemming method Expired - Fee Related JP3644466B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19110696A JP3644466B2 (en) 1996-07-19 1996-07-19 Hemming method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19110696A JP3644466B2 (en) 1996-07-19 1996-07-19 Hemming method

Publications (2)

Publication Number Publication Date
JPH1034255A true JPH1034255A (en) 1998-02-10
JP3644466B2 JP3644466B2 (en) 2005-04-27

Family

ID=16268959

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19110696A Expired - Fee Related JP3644466B2 (en) 1996-07-19 1996-07-19 Hemming method

Country Status (1)

Country Link
JP (1) JP3644466B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4536974B2 (en) * 1999-06-09 2010-09-01 三洋機工株式会社 Hemming structure of metal plate
FR3012057A1 (en) * 2013-10-21 2015-04-24 Peugeot Citroen Automobiles Sa CRIMPING ASSEMBLY OF TWO SATIN OR ALUMINUM PIECES AND METHOD OF OBTAINING THE SAME
WO2023248297A1 (en) * 2022-06-20 2023-12-28 日産自動車株式会社 Method for producing panel structure

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014201998A1 (en) * 2014-02-04 2015-08-20 Volkswagen Aktiengesellschaft Method for joining and embossing device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4536974B2 (en) * 1999-06-09 2010-09-01 三洋機工株式会社 Hemming structure of metal plate
FR3012057A1 (en) * 2013-10-21 2015-04-24 Peugeot Citroen Automobiles Sa CRIMPING ASSEMBLY OF TWO SATIN OR ALUMINUM PIECES AND METHOD OF OBTAINING THE SAME
WO2023248297A1 (en) * 2022-06-20 2023-12-28 日産自動車株式会社 Method for producing panel structure

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