JP3387739B2 - Aluminum or aluminum alloy bending member, bending method and bending mold - Google Patents
Aluminum or aluminum alloy bending member, bending method and bending moldInfo
- Publication number
- JP3387739B2 JP3387739B2 JP17577396A JP17577396A JP3387739B2 JP 3387739 B2 JP3387739 B2 JP 3387739B2 JP 17577396 A JP17577396 A JP 17577396A JP 17577396 A JP17577396 A JP 17577396A JP 3387739 B2 JP3387739 B2 JP 3387739B2
- Authority
- JP
- Japan
- Prior art keywords
- bending
- corner
- radius
- aluminum
- compression side
- 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
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- Bending Of Plates, Rods, And Pipes (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は自動車のバンパーや
フレーム及び建築構造物等の構造用として使用されるア
ルミニウム又はアルミニウム合金製曲げ加工部材及びそ
の曲げ加工方法並びに曲げ金型に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aluminum or aluminum alloy bending member, a bending method therefor, and a bending die used for structural purposes such as bumpers and frames of automobiles and building structures.
【０００２】[0002]
【従来の技術】近年、地球環境保全の観点から大気中の
炭酸ガス等の増加を抑制するために自動車の軽量化や電
気自動車の導入が本格的に検討されている。この軽量化
手段の１つとして材料の置換、すなわち従来自動車構造
材として主として使用されてきた鋼板の代わりに、アル
ミニウム合金製の押出形材を使用する試みがなされてい
る。実際、バンパーは実用化されており、自動車の車体
フレームに対するアルミニウム合金押出材の使用検討が
増加している。2. Description of the Related Art In recent years, from the viewpoint of global environment conservation, in order to suppress an increase in carbon dioxide gas in the atmosphere, weight reduction of automobiles and introduction of electric automobiles have been seriously studied. As one of the means for reducing the weight, attempts have been made to replace the material, that is, to use an extruded profile made of an aluminum alloy instead of the steel plate that has been mainly used as a conventional automobile structural material. In fact, bumpers have been put to practical use, and the use of aluminum alloy extruded materials for automobile body frames has been increasing.
【０００３】このように、バンパーや車体フレームにア
ルミニウム合金押出形材を使用する場合、バンパーでは
曲げ内側に取付部があり、フレームでは曲げ側面で溶接
等の接合が必要となる。ところが、例えば図１（ａ）の
従来例に示すように、マルチベンダー（圧縮側ローラ
２、外周側ローラ３、側面押えローラ４を図示）等を用
いて形材１を曲げ加工すると、曲げの圧縮側に座屈によ
るしわ（曲げ内側のしわＳ1、曲げ側面のしわＳ2を破線
で図示）が発生するという問題点があった。この曲げ加
工時のしわが曲げ部材の取付け精度や外観及び溶接の信
頼性に影響し、また、逆にしわの発生により曲げ加工限
界（曲げ半径）が決定されるという場合も多い。As described above, when the aluminum alloy extruded shape member is used for the bumper or the vehicle body frame, the bumper has a mounting portion inside the bend, and the frame needs to be joined by welding or the like on the bent side surface. However, for example, as shown in the conventional example of FIG. 1A, when the shape member 1 is bent using a multi-bender (the compression side roller 2, the outer peripheral side roller 3, the side surface pressing roller 4 are shown), There was a problem in that wrinkles (wrinkles S 1 on the inner side of bending and wrinkles S 2 on the side of bending) are generated on the compression side due to buckling. In many cases, the wrinkles during the bending process affect the mounting accuracy and appearance of the bending member and the reliability of welding, and on the contrary, the bending process limit (bending radius) is often determined by the occurrence of wrinkles.
【０００４】[0004]
【発明が解決しようとする課題】一方、曲げ加工時のし
わの発生を防止するため、低融点金属を中子として入れ
たり（特開平５ー１０４１５２号公報）、数珠中子を使
用したり（特開平６ー１７０４４９号公報）、形材の肉
厚を増すなどの対応がなされている。しかしながら、上
述の低融点金属はしわ抑制には効果があるものの、挿入
や溶出に時間がかかりコストアップとなり、また、数珠
中子ではしわの抑制が充分ではなく、さらに肉厚増加は
しわ抑制に効果があるものの重量アップとなり、軽量化
効果が薄れてしまうという問題がある。On the other hand, in order to prevent the generation of wrinkles during bending, a low melting point metal is inserted as a core (Japanese Patent Laid-Open No. 104152/1993) or a beads core is used ( JP-A-6-170449), and measures such as increasing the wall thickness of the shape member have been taken. However, although the above-mentioned low melting point metal is effective in suppressing wrinkles, it takes time to insert and elute, resulting in cost increase.In addition, wrinkle core does not sufficiently suppress wrinkles, and further increase in wall thickness suppresses wrinkles. Although it is effective, there is a problem that the weight is increased and the weight reduction effect is diminished.
【０００５】本発明はかかる問題点に鑑みてなされたも
のであって、低融点金属や複雑な中子等を使用すること
なく、形材の曲げ加工時におけるしわの発生を抑制する
ことを目的とする。The present invention has been made in view of the above problems, and an object thereof is to suppress the occurrence of wrinkles during bending of a profile without using a low melting point metal or a complicated core. And
【０００６】[0006]
【課題を解決するための手段】本発明に関わる曲げ加工
部材は、長さ方向に垂直な断面において曲げの圧縮側に
コーナー部を有するアルミニウム又はアルミニウム合金
形材からなり、曲げ加工を受けた部分において曲げ加工
後の該コーナー半径が曲げ加工前の半径より小さく成形
されていることを特徴とする。本発明において、曲げ加
工部材とは長さ方向の少なくとも一部に曲げ加工を受け
た形材を意味し、コーナー部とは形材の長さ方向に垂直
な断面におけるコーナー部を意味し、コーナー半径とは
当該コーナー部の曲率半径を意味する。なお、本発明に
関わる曲げ加工部材が長さ方向の一部に曲げ加工を受け
た場合においては、曲げ加工を受けた部分のコーナー半
径は曲げ加工を受けていない部分のコーナー半径より小
さい。つまり当該コーナー部のコーナー半径が長さ方向
の途中で変化する。A bending member according to the present invention is made of aluminum or an aluminum alloy profile having a corner portion on the compression side of bending in a cross section perpendicular to the length direction, and is a portion subjected to bending processing. In, the corner radius after bending is formed smaller than the radius before bending. In the present invention, the bending member means a shape member that is bent at least in part in the length direction, and the corner portion is perpendicular to the length direction of the shape member.
Means the corner part in a different cross section, and the corner radius is
It means the radius of curvature of the corner . When the bending member according to the present invention is bent in a part in the length direction, the corner radius of the bent portion is smaller than the corner radius of the unbent portion. That is, the corner radius of the corner portion changes midway along the length direction.
【０００７】また、本発明に関わる曲げ加工方法は、長
さ方向に垂直な断面にコーナー部を有するアルミニウム
又はアルミニウム合金形材を曲げ加工する際、曲げ加工
と同時に曲げの圧縮側のコーナー半径を曲げ加工前より
小さく成形することを特徴とし、本発明に関わる曲げ金
型はその曲げ加工に使用するものであって、形材の圧縮
側コーナー部に接触する部分を該コーナー半径より小さ
い半径に形成したことを特徴とする。ここで、金型の当
該部分は半径０、つまり角（かど）をつけた場合も含む
ものとする。なお、形材の曲げ加工前の圧縮側のコーナ
ー半径をＲ１、曲げ加工後の圧縮側のコーナー半径をＲ
２としたとき、Ｒ２／Ｒ１が０．７以下のとき本発明の
効果が顕著に現れる。金型の該当部分のコーナー半径は
目標とするＲ２／Ｒ１の値に合わせて設定すればよい。Further, the processing method bending according to the present invention, the length
When bending an aluminum or aluminum alloy profile having a corner portion in a cross section perpendicular to the vertical direction , the present invention is characterized in that at the same time as bending, the corner radius on the compression side of bending is formed smaller than before bending. The related bending die is used for the bending work, and is characterized in that a portion contacting the compression side corner portion of the shape member is formed with a radius smaller than the corner radius. Here, it is assumed that the part of the mold includes a radius 0, that is, a case where a corner is attached. In addition, the corner radius on the compression side before bending of the profile is R 1 , and the corner radius on the compression side after bending is R.
When 2, the effect of the present invention when R 2 / R 1 of 0.7 or less is conspicuous. The corner radius of the corresponding part of the mold may be set according to the target value of R 2 / R 1 .
【０００８】本発明に関わる曲げ加工部材は例えば自動
車のフレームに適用すると好適である。つまり、自動車
のフレームは溶接箇所が多く、溶接の信頼性を要求され
る構造部材であるが、本発明を適用することで溶接の信
頼性が向上し、構造部材としての信頼度が増す。The bending member according to the present invention is preferably applied to a frame of an automobile, for example. That is, although the frame of an automobile has many welding points and is a structural member that requires welding reliability, the application of the present invention improves welding reliability and increases the reliability as a structural member.
【０００９】[0009]
【発明の実施の形態】本発明においては、曲げ金型の形
材の圧縮側コーナー部に接触する部分を該コーナー半径
より小さい半径に形成する、つまり、その部分を曲げ加
工前の形材のコーナー半径より小さく、鋭利にしてお
き、これに沿わせて曲げ加工するものである。曲げ加工
時には、図１（ｂ）に矢印で示すように曲げの圧縮側へ
変形しようとする力が働き、この力により形材１のコー
ナー部の肉が圧縮側ローラ２のコーナーに向かって移動
し、曲げ加工後の形材１のコーナー部は圧縮側ローラ２
のコーナー半径に応じて所定のコーナー半径に仕上げら
れる。いいかえれば、圧縮側ローラ２のコーナーに、形
材の曲げの圧縮側で余ってしまう肉が逃げるスペースが
予め形成されているともいうことができる。これがしわ
を延ばす効果となり、しわの発生が抑制される。BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, a portion of a shape of a bending die which comes into contact with a compression-side corner is formed to have a radius smaller than the corner radius, that is, the portion of the shape before bending is shaped. It is smaller than the corner radius and is sharpened, and is bent along with it. At the time of bending, as shown by the arrow in FIG. 1 (b), a force acts to deform toward the compression side of bending, and this force moves the meat at the corner of the profile 1 toward the corner of the compression side roller 2. However, the corner of the profile 1 after bending is the compression side roller 2
It is finished to a predetermined corner radius according to the corner radius. In other words, it can be said that the corners of the compression-side roller 2 are preliminarily provided with a space for escaping the excess meat on the compression side of the bending of the profile. This has the effect of lengthening wrinkles, and the occurrence of wrinkles is suppressed.
【００１０】従来の図１（ａ）において形材１の高さを
Ｈとすると、アルミニウム又はアルミニウム合金の場
合、曲げ半径（内径）がおよそ（７×Ｈ）以下のとき曲
げ加工時の圧縮側のしわ発生が問題となっていた。本発
明では、このような小さい曲げ半径でも、前記の金型を
使用して曲げ加工を行うことにより圧縮側のしわ発生を
抑制でき、特に曲げ加工時に前記の定義によるＲ2／Ｒ1
が０．７以下となるようにすることで、しわ発生を抑制
する効果が顕著となる。Assuming that the height of the profile 1 is H in FIG. 1 (a) of the prior art, in the case of aluminum or aluminum alloy, when the bending radius (inner diameter) is about (7 × H) or less, the compression side during bending. Wrinkles were a problem. In the present invention, even with such a small bending radius, it is possible to suppress the generation of wrinkles on the compression side by performing bending using the above-mentioned mold, and particularly when bending, R 2 / R 1 according to the above definition is used.
By setting the ratio to be 0.7 or less, the effect of suppressing the generation of wrinkles becomes remarkable.
【００１１】従来は形材の変形を少なくするため全体的
に形材１の断面形状に合わせた外形を備える金型を使用
していたが、本発明では、形材の圧縮側が接触する部分
の金型のコーナーを予め所望の小さいコーナー半径に形
成しておき、これに沿わせて形材を曲げ加工するもの
で、加工中に曲げ圧縮側へ変形しようとする力を利用し
て、曲げ加工時に形材のコーナー部を所定のコーナー半
径に仕上げることができ、前記公報に示したような複雑
な中子は必要でなく、一般的な中子で曲げ加工が可能と
なる。また、しわを抑制することでスプリングバックに
よる曲げ角度や半径のバラツキが小さくなり、組立時の
精度向上が期待できる。Conventionally, in order to reduce the deformation of the profile, a mold having an outer shape which is entirely matched to the cross-sectional shape of the profile 1 has been used, but in the present invention, the portion of the profile on the compression side comes into contact. The corner of the mold is formed in advance to a desired small corner radius, and the profile is bent along this, and bending is performed using the force that tends to deform to the bending compression side during processing. At times, the corner portion of the profile can be finished to have a predetermined corner radius, and the complicated core shown in the above publication is not necessary, and bending can be performed with a general core. In addition, by suppressing wrinkles, variations in bending angle and radius due to springback are reduced, and improvement in accuracy during assembly can be expected.
【００１２】本発明は、上記の角管状の形材のほか、３
角形、５角形、日形、田形、目形等、コーナー部を有す
る種々の断面の中空形材や、断面の一部に中空部を有す
る形材、あるいは開断面の形材にも適用できる。しか
し、開断面の形材の場合、曲げ加工時に形材断面の変形
（ウエブの反りやコーナー角度の変化など）が起こる
と、形材のコーナー部の肉を圧縮側コーナーに向かって
移動させる力が発生しなくなるため、断面の変形を抑え
る何らかの手段（例えば数珠中子）を用いることが好ま
しい。さらに、本発明は、上記のマルチベンダーのほ
か、押し付け曲げ、引き曲げ、プレス曲げ、ロール曲げ
等、種々の方式の曲げ装置により実施できる。In addition to the above rectangular tubular shape member, the present invention also provides
It can also be applied to a hollow profile having various cross sections having corners such as a prism, a pentagon, a day, a square, and an eye shape, a profile having a hollow part in a part of the cross section, or a profile having an open cross section. However, in the case of a profile with an open cross section, when the profile cross section is deformed during bending (web warpage, change in corner angle, etc.), the force that moves the meat at the corner of the profile toward the compression side corner. Since it does not occur, it is preferable to use some means for suppressing the deformation of the cross section (for example, a beads core). Further, the present invention can be implemented by a bending apparatus of various types such as pressing bending, pulling bending, press bending, roll bending, etc., in addition to the above-mentioned multi-bender.
【００１３】[0013]
【実施例】次に、本発明の実施例について説明する。図
２に示す角管状の形材（４０ｍｍ×４０ｍｍ、２ｍｍ
厚、コーナー部半径５ｍｍ）を押出成形し、所定の長さ
に切断した。供試材は６０６３−Ｔ１材を用いた。EXAMPLES Next, examples of the present invention will be described. Square tubular shape shown in Fig. 2 (40 mm x 40 mm, 2 mm
Thickness, corner radius 5 mm) was extruded and cut into a predetermined length. As the test material, 6063-T1 material was used.
【００１４】図３は曲げ試験方法を示す模式図であり、
図３（ａ）又は（ｂ）に示すように、この曲げ試験機
（マルチベンダー）は、固定治具１０、その前方に配置
された可動治具１１、中子１２等からなり、可動治具１
１には曲げ加工用のローラー１３（１３ａ、１３ｂ）及
び側面の押えローラ１４（図４参照）が取り付けられて
いる。図３（ａ）に示すように、形材１５が固定治具１
０内に後方から挿入され、その内側に中子１２が挿入さ
れる。そして、可動治具１１に設けられたローラー１３
に形材１５の前端部が拘束されている。この状態から図
３（ｂ）に示すように、可動治具１１を可動させつつ、
形材１５を例えば５０ｍｍ／秒の速度で前方に送る。こ
れにより、形材１５は可動治具１１の可動軌跡により決
まる所定の曲げ半径で曲げ加工される。FIG. 3 is a schematic diagram showing a bending test method.
As shown in FIG. 3 (a) or (b), this bending tester (multi-bender) comprises a fixed jig 10, a movable jig 11 arranged in front of the fixed jig 10, a core 12, and the like. 1
1, a bending roller 13 (13a, 13b) and a side pressing roller 14 (see FIG. 4) are attached. As shown in FIG. 3A, the shape member 15 is the fixing jig 1.
0 is inserted from the rear, and the core 12 is inserted inside thereof. The roller 13 provided on the movable jig 11
The front end of the shape member 15 is constrained. From this state, as shown in FIG. 3B, while moving the movable jig 11,
The profile 15 is fed forward at a speed of, for example, 50 mm / sec. Thereby, the shape member 15 is bent with a predetermined bending radius determined by the movable locus of the movable jig 11.
【００１５】曲げ加工用のローラー１３としては、図４
に示すように、圧縮側ローラー１３ａとして３種類の金
型（それぞれコーナー半径３ｍｍ、４ｍｍ、５ｍｍ）を
用い、外周側ローラー１３ｂとしてコーナー半径５ｍｍ
の金型を用い、かつ角柱タイプの中子を用いて、曲げ半
径（内径）１５０ｍｍの曲げ加工を行った。また、比較
のため、コーナー半径すべて５ｍｍのローラー１３を用
いかつ数珠中子を用いた曲げ加工も実施した。曲げ加工
後、形材の曲げ加工を受けた部分の圧縮側に発生したし
わの高さを、図５に示す要領で、内面及び側面それぞれ
の断面（ａ−ａ’及びｂ−ｂ’）にて測定し、それぞれ
について最大しわ高さを求めた。その結果を表１に示
す。As the roller 13 for bending work, as shown in FIG.
As shown in Fig. 3, three types of dies (corner radii 3 mm, 4 mm, and 5 mm, respectively) are used as the compression side roller 13a, and a corner radius 5 mm is used as the outer peripheral side roller 13b.
Bending was performed with a bending radius (inner diameter) of 150 mm using the mold of No. 1 and a prismatic core. In addition, for comparison, a bending process was also carried out using a roller 13 having a corner radius of 5 mm and a beads core. After bending, the height of the wrinkles generated on the compression side of the bent portion of the profile is calculated as shown in Fig. 5 on the cross-sections (aa 'and bb') of the inner surface and the side surface, respectively. The maximum wrinkle height was determined for each of them. The results are shown in Table 1.
【００１６】[0016]
【表１】 [Table 1]
【００１７】表１に示すように、本発明に基づく試験例
１及び試験例２を従来例である試験例３と比較すると、
曲げ加工時のしわを抑制する効果が認められ、曲げ加工
性が改善されていた。特に、形材のＲ2／Ｒ1が０．７以
下というより限定された要件を満たす試験例１では特に
効果が顕著であり、数珠タイプの中子を用いた試験例４
より曲げ加工性が良好であった。As shown in Table 1, when Test Example 1 and Test Example 2 according to the present invention are compared with Test Example 3 which is a conventional example,
The effect of suppressing wrinkles during bending was recognized, and bending workability was improved. In particular, the effect is particularly remarkable in Test Example 1 which satisfies the more limited requirement that R 2 / R 1 of the profile is 0.7 or less, and Test Example 4 using a bead type core.
The bending workability was better.
【００１８】[0018]
【発明の効果】本発明によれば、アルミニウム又はアル
ミニウム合金形材の曲げ加工において、低融点金属や複
雑な中子を使用しなくても曲げ加工時のしわの発生を抑
制することができ、優れた曲げ加工性が得られる。特に
フレーム等の自動車部材や建築部材として最適な、精度
よく外観品質にも優れ溶接信頼性にも優れたた曲げ加工
部材を得ることができる。また、本発明は特に曲げ半径
（内径）の小さいときに顕著な効果を表す。According to the present invention, in bending of aluminum or aluminum alloy profile, it is possible to suppress the generation of wrinkles during bending without using a low melting point metal or a complicated core. Excellent bendability is obtained. In particular, it is possible to obtain a bent member that is most suitable as an automobile member such as a frame or a building member and has excellent appearance quality and excellent welding reliability. Further, the present invention exhibits a remarkable effect particularly when the bending radius (inner diameter) is small.
【図１】従来法によるしわ発生の説明図（ａ）及び本発
明法によるしわ抑制のメカニズムを説明する模式図
（ｂ）である。FIG. 1 is an explanatory diagram (a) of wrinkle generation by a conventional method and a schematic diagram (b) illustrating a mechanism of wrinkle suppression by the method of the present invention.
【図２】実施例の曲げ加工試験材の断面形状を説明する
図である。FIG. 2 is a diagram illustrating a cross-sectional shape of a bending test material of an example.
【図３】実施例のマルチベンダーの概要と曲げ加工試験
の要領を説明する図である。FIG. 3 is a diagram illustrating an outline of a multi-bender and an outline of a bending test of an example.
【図４】実施例に使用した曲げ金型の形状を説明する図
である。FIG. 4 is a diagram illustrating the shape of a bending die used in Examples.
【図５】しわ高さの測定方法を説明する図である。FIG. 5 is a diagram illustrating a method of measuring wrinkle height.
１ 形材 ２ 圧縮側ローラー ３ 外周側ローラー １０ 固定治具 １１ 可動治具 １２ 中子 １３（１３ａ、１３ｂ） 曲げ加工用ローラー １５ 形材 1 profile 2 compression side roller 3 Outer roller 10 Fixing jig 11 movable jig 12 core 13 (13a, 13b) Bending roller 15 Profile
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｂ６０Ｒ 19/03 Ｂ６０Ｒ 19/03 Ｂ (56)参考文献 特開 平８−187519（ＪＰ，Ａ) 特開 平５−131238（ＪＰ，Ａ) 特開 平５−76943（ＪＰ，Ａ) 特開 平７−51738（ＪＰ，Ａ) 特開 昭54−117369（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B21D 7/08 B21D 7/024 B21D 7/00 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 7 Identification symbol FI B60R 19/03 B60R 19/03 B (56) References JP-A-8-187519 (JP, A) JP-A-5-131238 ( JP, A) JP 5-76943 (JP, A) JP 7-51738 (JP, A) JP 54-117369 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) B21D 7/08 B21D 7/024 B21D 7/00
Claims (6)
縮側にコーナー部を有するアルミニウム又はアルミニウ
ム合金形材からなる曲げ加工部材であって、曲げ加工を
受けた部分において曲げ加工後の該コーナー半径が曲げ
加工前の半径より小さく成形されていることを特徴とす
る曲げ加工部材。1. A bending member made of aluminum or an aluminum alloy profile having a corner portion on the compression side of bending in a cross section perpendicular to the length direction, the corner after bending in a portion subjected to bending. A bending member having a radius smaller than that before bending.
１、曲げ加工後の圧縮側のコーナー半径をＲ２としたと
き、Ｒ２／Ｒ１が０．７以下であることを特徴とする請
求項１に記載された曲げ加工部材。2. The corner radius on the compression side before bending is R
1. The bending member according to claim 1 , wherein R 2 / R 1 is 0.7 or less, where R 2 is a corner radius on the compression side after bending.
縮側にコーナー部を有するアルミニウム又はアルミニウ
ム合金形材からなる曲げ加工部材であって、曲げ加工を
受けた部分のコーナー半径が曲げ加工を受けていない部
分のコーナー半径より小さくされていることを特徴とす
る曲げ加工部材。3. A bending member made of aluminum or an aluminum alloy profile having a corner portion on the compression side of bending in a cross section perpendicular to the longitudinal direction, wherein the corner radius of the bent portion is A bending member characterized in that it has a radius smaller than the corner radius of the portion which is not received.
とする請求項１〜３のいずれかに記載された曲げ加工部
材。4. The bending member according to claim 1, wherein the bending member is a frame material for automobiles.
部を有するアルミニウム又はアルミニウム合金形材を曲
げ加工する際、曲げ加工と同時に曲げの圧縮側のコーナ
ー半径を曲げ加工前より小さく成形することを特徴とす
る曲げ加工方法。5. When bending an aluminum or aluminum alloy profile having a corner portion in a cross section perpendicular to the longitudinal direction, at the same time as the bending work, forming a corner radius on the compression side of the bending smaller than that before the bending work. Characteristic bending method.
部を有するアルミニウム又はアルミニウム合金形材の曲
げ金型であって、形材の圧縮側コーナー部に接触する部
分を該コーナー半径より小さい半径に形成したことを特
徴とする曲げ金型。6. A bending die for an aluminum or aluminum alloy profile having a corner in a cross section perpendicular to the longitudinal direction, wherein a portion contacting the compression side corner of the profile has a radius smaller than the corner radius. Bending die characterized by being formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17577396A JP3387739B2 (en) | 1996-06-14 | 1996-06-14 | Aluminum or aluminum alloy bending member, bending method and bending mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17577396A JP3387739B2 (en) | 1996-06-14 | 1996-06-14 | Aluminum or aluminum alloy bending member, bending method and bending mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH105880A JPH105880A (en) | 1998-01-13 |
| JP3387739B2 true JP3387739B2 (en) | 2003-03-17 |
Family
ID=16002018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17577396A Expired - Fee Related JP3387739B2 (en) | 1996-06-14 | 1996-06-14 | Aluminum or aluminum alloy bending member, bending method and bending mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3387739B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7337642B2 (en) * | 2005-06-13 | 2008-03-04 | Shape Corporation | Roll-former apparatus with rapid-adjust sweep box |
| CN102179434B (en) * | 2011-01-24 | 2012-11-07 | 张家港市龙冠特种装饰材料厂 | Aluminum strip synchronous bending device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54117369A (en) * | 1978-03-04 | 1979-09-12 | Ooemu Kougiyou Kk | Hollow shaped material for bending process |
| JPH0576943A (en) * | 1991-09-13 | 1993-03-30 | Furukawa Alum Co Ltd | Method for bending shape material |
| JP3146036B2 (en) * | 1991-11-12 | 2001-03-12 | 川崎油工株式会社 | Press processing method for box-shaped section material |
| JP3241184B2 (en) * | 1993-08-18 | 2001-12-25 | 三菱アルミニウム株式会社 | Extruded material |
| JPH08187519A (en) * | 1994-12-28 | 1996-07-23 | Nissan Motor Co Ltd | Shape for bend-working and its bend-working method |
-
1996
- 1996-06-14 JP JP17577396A patent/JP3387739B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH105880A (en) | 1998-01-13 |
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