JPH062295B2 - Bending method for long strips - Google Patents
Bending method for long stripsInfo
- Publication number
- JPH062295B2 JPH062295B2 JP60084481A JP8448185A JPH062295B2 JP H062295 B2 JPH062295 B2 JP H062295B2 JP 60084481 A JP60084481 A JP 60084481A JP 8448185 A JP8448185 A JP 8448185A JP H062295 B2 JPH062295 B2 JP H062295B2
- Authority
- JP
- Japan
- Prior art keywords
- strip
- pressing
- longitudinal direction
- upper punch
- 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 - Lifetime
Links
Landscapes
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Description
【発明の詳細な説明】 〔発明の利用分野〕 本発明は長尺帯状品の曲げ加工法に係り、特に、低コス
トで、長尺帯状品に曲がりを付与するに好適な長尺帯状
品の曲げ加工法に関するものである。Description: FIELD OF THE INVENTION The present invention relates to a method for bending a long strip, and more particularly to a long strip suitable for imparting a bend to the long strip at low cost. It relates to a bending method.
従来、長尺帯状品の曲げ加工に関しては、益田：“薄板
の曲げ加工”（誠文堂新光社，昭33年５月，ｐ1，180，
181，186，187)と題する書籍に記載されている曲げ加工
法が基本となっている。この曲げ加工法によれば、曲が
り形状を決めるための型が必要であるか、あるいは、ロ
ール成形の場合には専用機を用いるなど特殊設備が必要
であって、汎用性がなかった。したがって、低コスト
で、長尺帯状品に曲がりを付与することができないとい
う問題点があった。また、上記いずれの方法も、被加工
物に曲げ力もしくは曲げモーメントを負荷して曲げるも
のであるから、加工装置が大型であった。Conventionally, regarding bending of long strips, Masuda: “Bending of thin plates” (Seibundo Shinkosha, May 33, p1, 180,
The bending method described in the book entitled 181, 186, 187) is the basis. According to this bending method, a mold for determining a curved shape is required, or special equipment such as using a special machine is required in the case of roll forming, which is not versatile. Therefore, there is a problem that it is not possible to impart a bend to a long strip-shaped product at low cost. Further, in any of the above methods, a bending force or bending moment is applied to the work piece to bend the work piece, so that the processing apparatus is large.
本発明は、上記した従来技術の問題点を除去して、既存
のプレスを使用することにより、低コストで、長尺帯状
品に面外曲げを付与することができる長尺帯状品の曲げ
加工法の提供を、その目的とするものである。The present invention eliminates the above-mentioned problems of the prior art and uses an existing press, so that it is possible to impart an out-of-plane bending to a long strip-shaped product at a low cost, and to bend the long strip-shaped product. The purpose is to provide the law.
本発明は、アルミニウム等の金属材からなるほぼ一定の
板厚および板幅を有する帯板を、その長手方向へ送りな
がら、前記帯板を上方よりほぼ垂直に押圧する長方形の
加圧面を有する上ポンチと、該上ポンチの押圧力を前記
帯板を介して受ける平らな受圧面を有する下型とによ
り、順次加圧して曲げる長尺帯状品の曲げ加工法におい
て、 （１）前記上ポンチおよび下型の各加圧面の帯板長手方
向と直角方向の寸法を、帯板の板幅より十分大きくし、 （２）前記上ポンチおよび下型の各加圧面の帯板長手方
向の寸法ｂ２，ｂ３の関係をｂ２＜ｂ３とし、 （３）帯板の長手方向の所定の長さ範囲を、帯板の全板
幅にわたり長手方向に同一幅で、かつその板厚方向に一
様に平均して所定量圧縮されるように、上ポンチ加圧面
により加圧し、 （４）前記加圧時の帯板の板厚方向の圧縮量，寸法
ｂ２，加圧時の帯板長手方向の加圧寸法の各値に応じ
て、加圧された帯板の押圧面を内径として、任意に所定
の曲率半径の面外曲げを付与する構成にしたものであ
る。The present invention has a rectangular pressing surface for pressing a strip plate made of a metal material such as aluminum and having a substantially constant plate thickness and a plate width in a longitudinal direction thereof while pushing the strip plate substantially vertically from above. In a method of bending a long strip-shaped product, which is sequentially pressed and bent by a punch and a lower die having a flat pressure receiving surface that receives a pressing force of the upper punch via the strip plate, (1) the upper punch and the The dimension of each pressing surface of the lower die in the direction perpendicular to the longitudinal direction of the strip is made sufficiently larger than the strip width of the strip, and (2) the dimension b 2 of the upper punch and each pressing surface of the lower die in the longitudinal direction of the strip. , B 3 is set to b 2 <b 3, and (3) a predetermined length range in the longitudinal direction of the strip is the same width in the longitudinal direction over the entire width of the strip and is uniform in the thickness direction thereof. So that it will be compressed by a predetermined amount on average by the upper punch pressure surface, 4) Depending on the compression amount in the thickness direction of the strip during pressing, the dimension b 2 , and the pressing dimension in the longitudinal direction of the strip during pressing, the pressing surface of the strip is pressed. As the inner diameter, an out-of-plane bending having a predetermined radius of curvature is arbitrarily given.
実施例の説明に入るまえに、本発明に係る基本的事項
を、第１〜４図を用いて説明する。Before starting the description of the embodiments, the basic matters according to the present invention will be described with reference to FIGS.
第１〜４図は、本発明に係る基本的事項を説明するため
のものであり、第１図は、本発明に係る長尺帯状品の曲
げ加工法による加工状態を示す斜視図、第２図は、第１
図における上ポンチ、下型の詳細を示す斜視図、第３図
は、第２図における長尺帯状品（曲げ加工前）の斜視
図、第４図は、第１図に係る長尺帯状品の曲げ加工法に
よって、曲がりを付与された長尺帯状品の斜視図であ
る。1 to 4 are for explaining the basic matters according to the present invention, and FIG. 1 is a perspective view showing a processing state of a long strip-shaped product according to the present invention by a bending method, and FIG. The figure shows the first
FIG. 3 is a perspective view showing the details of the upper punch and the lower die in the figure, FIG. 3 is a perspective view of the long strip (before bending) in FIG. 2, and FIG. 4 is the long strip according to FIG. FIG. 6 is a perspective view of a long strip-shaped article that is bent by the bending method of FIG.
第３図において、１は、板厚ｈ，板幅ｗ，長さｌの長尺
帯状品であり、この長尺帯状品１の中央部の全加圧長さ
ｃの範囲に、第４図に示すような曲率半径Ｒ（すなわ
ち、曲率１／Ｒ）の曲がりを付与する場合を想定する。In FIG. 3, reference numeral 1 denotes a long strip-shaped product having a plate thickness h, a plate width w, and a length l, and in the range of the total pressing length c in the central portion of the long strip-shaped product 1, FIG. It is assumed that a bend having a radius of curvature R (that is, a curvature 1 / R) as shown in (1) is applied.
第２図における上ポンチ２および下型３の、長尺帯状品
１の幅方向を加圧する幅方向加圧部長さa2およびa3は、
いずれも該長尺帯状品１の板幅ｗより十分大きく、ま
た、長手方向を加圧す長手方向加圧部長さb2，b3は、b2
＜b3になるようにきめる（b2＝b3では、曲がりが発生し
ない）。The width direction pressing portion lengths a 2 and a 3 of the upper punch 2 and the lower die 3 in FIG. 2 which press the widthwise direction of the long strip 1 are:
Both are sufficiently larger than the plate width w of the long strip 1 and the lengths b 2 and b 3 in the longitudinal direction for pressing in the longitudinal direction are b 2
Determine so that <b 3 (b 2 = b 3 does not cause bending).
このように構成したポンチ２，下型３を使用して、長尺
帯状品１を矢印方向（第２図）へ送りながら、該長尺帯
状品１の板幅の全長、すなわちｗを、ポンチ２を下降さ
せて、該ポンチ２加圧面2aと下型３の加圧面3aとで、所
定の全加圧長さｃにわたって該長尺帯状品１の全板幅ｗ
にわたり長手方向に同一幅で、かつその板幅ｈ方向に一
様に平均して所定量圧縮されるように、順次加圧するこ
とにより、加圧された長尺帯状品１の押圧面を内径とし
て、任意に所定の曲率半径Ｒの面外曲げを付与すること
ができる。前記曲率半径Ｒの大きさを制御する要因とし
ては、上ポンチ２の長手方向加圧部長さb2，板厚方向の
圧縮量δなどがあるが、これらについては実施例の中で
詳述する。Using the punch 2 and the lower mold 3 configured as described above, while feeding the long strip 1 in the direction of the arrow (FIG. 2), the length of the plate width of the long strip 1, that is, w, is punched. 2, the punch 2 pressurizing surface 2a and the lower die 3 pressurizing surface 3a cover a predetermined total pressurizing length c over the entire strip width w of the long strip 1.
The pressure is applied to the long strip 1 having the same width in the longitudinal direction and uniformly averaging in the plate width h direction so as to be compressed by a predetermined amount. The out-of-plane bending with a predetermined radius of curvature R can be arbitrarily given. Factors that control the size of the radius of curvature R include the lengthwise pressing portion length b 2 of the upper punch 2 and the compression amount δ in the plate thickness direction, which will be described in detail in the embodiment. .
なお、この曲げ加工法によって、曲がりを付与された長
尺帯状品1Aは、前記のごとく長手方向の所定の長さ範囲
の押圧面側が、帯板の全板幅にわたり板厚方向に一様に
平均して所定量圧縮されるため、本発明に係る長尺帯状
品の曲げ加工法は、この様な長手方向の断面変化をさほ
ど問題にしない（たとえば、強度上問題にしない、外観
を問題にしない）ものの曲げ加工に適している。By this bending method, the long strip-shaped article 1A to which a bend is imparted has a pressing surface side in a predetermined length range in the longitudinal direction as described above, which is uniform in the thickness direction over the entire width of the strip. Since it is compressed by a predetermined amount on average, the method for bending a long strip-shaped product according to the present invention does not cause such a change in the cross-section in the longitudinal direction so much (for example, does not cause a problem in strength, does not cause a problem in appearance). Not suitable for bending.
以下本発明を、第３図に係る長尺帯状品１から第４図に
係る、曲げを付与された長尺帯状品1Aを加工する実施例
によって説明する。The present invention will be described below with reference to an example of processing a long strip 1A to which bending is applied according to FIG. 3 to a long strip 1 according to FIG.
この曲げを付与された長尺帯状品1Aを加工するに使用さ
れる上ポンチ２，下型３は、その詳細を第２図に示すよ
うに、それぞれの加圧面2a，3aの寸法は、a2×b2，a3×
b3である。そして、前述したように、上ポンチの幅方向
加圧部長さa2，下型の幅方向加圧部長さa3の寸法は、い
ずれも長尺帯状品１の板幅ｗよりも十分大きく、また、
上ポンチの長手方向加圧部長さb2よりも下型の長手方向
加圧部長さb3の方が長い。As shown in FIG. 2 in detail, the upper punch 2 and the lower die 3 used for processing the long strip 1A to which the bending is applied have the dimensions of the pressing surfaces 2a and 3a, respectively. 2 x b 2 , a 3 x
b 3 . Then, as described above, the width direction pressing portion length a 2 of the upper punch, the size of the width direction pressing length a 3 of the lower die, both sufficiently larger than the plate width w of the long strip article 1, Also,
The length b 3 of the lower die in the longitudinal direction is longer than the length b 2 of the upper punch in the longitudinal direction.
上ポンチ２は、プレスのラム（図示せず）に取付けら
れ、下型３は、前記プレスのベッド（図示せず）上に載
置されており、上ポンチ２，下型３は、加圧面の中心軸
が一致するようにして、前記プレスに装着されている。
長尺帯状品１の長手方向前後には、搬送、加圧位置設定
用のマニプユレータ（図示せず）が取付けられている。The upper punch 2 is attached to a ram (not shown) of the press, the lower die 3 is placed on a bed (not shown) of the press, and the upper punch 2 and the lower die 3 are pressure surfaces. Are attached to the press so that their central axes coincide with each other.
A manipulator (not shown) for conveying and setting a pressurizing position is attached to the front and rear of the long strip 1 in the longitudinal direction.
まず、前記マニプユレータにより長尺帯状品１を下型３
の所定位置に載置し、前記ラムを下降させて、上ポンチ
２により、適当な長手方向の加圧長さに係る、上ポンチ
の長手方向加圧部長さb2に等しい加圧長さｂ＝b2と、予
め設定された所定の板厚方向の圧縮量δで、長尺帯状品
１の１回目の加圧を行なう。First, the long strip 1 is made into the lower mold 3 by the manipulator.
At a predetermined position, the ram is lowered, and the upper punch 2 applies a pressurizing length b equal to the longitudinal pressurizing portion length b 2 of the upper punch, which is related to an appropriate pressurizing length in the longitudinal direction. = B 2 and a preset predetermined compression amount δ in the plate thickness direction, the first pressing of the long strip 1 is performed.
次に、前記マニプユレータにより長尺帯状品１を下型３
上で、b2／２だけ右方向（第２図の矢印方向）へ移動さ
せ、すなわち、上ポンチ２を１回目の加圧長さb2の１／
２だけラップした位置に位置決めし、長手方向の加圧長
さｂ＝b2／２＝b1，板厚方向の圧縮量δ（１回目の加圧
と同じ圧縮量）で、１回目の加圧部の隣りを、２回目に
加圧する。Next, the long strip 1 is made into the lower mold 3 by the manipulator.
Above, b 2/2 only moves to the right (the arrow direction of FIG. 2), i.e., the upper punch 2 first pressurized圧長of b 2 1 /
2 only positioning the wrapped position, the longitudinal direction of the pressurizing圧長of b = b 2/2 = b 1, a compressed amount of the thickness direction [delta] (the same amount of compression as the first pressure), first pressurized The second side of the pressure section is pressurized for the second time.
以降、長手方向の加圧長さｂ＝b1，板厚方向の圧縮量δ
（２回目の加圧と同じ加圧長さ、圧縮量）で、順次前回
の加圧部の隣りを18回加圧することにより、全加圧長さ
ｃ（＝b2＋18×b1）の加圧を終了し、第４図に示すよう
に、上ポンチ２によって加圧された押圧面を内径とす
る、所定の曲率半径Ｒの面外曲げが付与された長尺帯状
品1Aが得られる。Thereafter, the pressing length in the longitudinal direction b = b 1 , the compression amount δ in the plate thickness direction
(The same pressurization length and compression amount as the second pressurization), by sequentially pressurizing the adjacent part of the previous pressurizing part 18 times, the total pressurizing length c (= b 2 + 18 × b 1 ) After pressurization is completed, as shown in FIG. 4, a long strip 1A having an inner diameter of the pressing surface pressed by the upper punch 2 and having an out-of-plane bend with a predetermined radius of curvature R is obtained. .
以下、具体例によって説明する。Hereinafter, a specific example will be described.
具体例１ 第３図に係る、ｗ＝100mm，ｈ＝50mm，ｌ＝2000mmのア
ルミニウムの長尺帯状品１の中央部の全加圧長さｃ＝40
0mmに、曲率半径Ｒ＝500mm（曲率１／Ｒ＝２×10-3／m
m）の曲がりを付与する場合。Specific Example 1 According to FIG. 3, the total pressure length c = 40 in the central part of the long strip 1 of aluminum with w = 100 mm, h = 50 mm, l = 2000 mm.
0 mm, radius of curvature R = 500 mm (curvature 1 / R = 2 × 10 −3 / m
When adding the bend of m).
上ポンチ２の加圧面2aの幅方向加圧部長さa2＝140mm，
長手方向加圧部長さb2＝40mm、下型３の加圧面3aの幅方
向加圧長さa3＝140mm，長手方向加圧部長さb3＝160mmで
ある。１回目の加圧長さｂはｂ＝b2＝40mm、２回目以降
の加圧長さｂはｂ＝b2／２＝b1＝20mm、板厚方向の圧縮
量δはすべてδ＝3.75mm（ｈの7.5%）とした。２回目以
降18回の加圧を順次行ない、全加圧長さｃ＝400mmを加
圧した。その結果、長尺帯状品１の中央部（全加圧長さ
の範囲）に、曲率半径Ｒがほぼ500mmの円弧状（その両
端は直線）の曲がりを付与することができる。Width direction pressure part length a 2 = 140mm of the pressure surface 2a of the upper punch 2,
The lengthwise pressing portion length b 2 = 40 mm, the widthwise pressing length a 3 = 140 mm of the pressing surface 3a of the lower mold 3, and the lengthwise pressing portion length b 3 = 160 mm. The first pressurized圧長of b b = b 2 = 40mm, the second and subsequent pressure圧長of b b = b 2/2 = b 1 = 20mm, all the thickness direction of the compression amount [delta] is [delta] = 3.75 mm (7.5% of h). The second and subsequent pressurizations were sequentially carried out 18 times, and the total pressurization length c = 400 mm was applied. As a result, an arc-shaped (having both ends thereof straight) bend having a radius of curvature R of approximately 500 mm can be imparted to the central portion (range of the entire pressurization length) of the long strip 1.
具体例２ 前記具体例１に供したと同じ寸法形状の長尺帯状品１，
および上ポンチ２，下型３を使用し、板厚方向の圧縮量
δ以外の加圧条件を同一にして、圧縮量δをいろいろ変
化させたところ、第５図に示すように、それぞれの圧縮
量δに対応して、いろいろの曲率１／Ｒを得ることがで
きた。SPECIFIC EXAMPLE 2 A long strip-shaped product 1 having the same size and shape as those used in Specific Example 1
When the upper punch 2 and the lower die 3 were used and the compression conditions δ in the plate thickness direction were the same except for the compression amount δ, and the compression amount δ was changed variously, as shown in FIG. Various curvatures 1 / R could be obtained corresponding to the quantity δ.
第５図は、圧縮量と曲がりの曲率との関係の一例を示す
δ−１／Ｒ線図である。FIG. 5 is a δ-1 / R diagram showing an example of the relationship between the amount of compression and the curvature of bending.
この第５図から明らかなように、圧縮量δの増加ととも
に曲がりの曲率１／Ｒも増加している。As is clear from FIG. 5, the curvature 1 / R of the bend also increases as the compression amount δ increases.
具体例３ 前記具体例１に供したと同じ寸法形状の長尺帯状品１と
下型３、および長手方向加圧部長さb2をいろいろ変化さ
せた上ポンチを使用し、板厚方向の圧縮量δ＝５mm、２
回目以降の加圧長さｂ＝b1＝20mmとして加工を行なった
ところ、第６図に示すように、それぞれの長手方向加圧
部長さb2に対応して、いろいろの曲率１／Ｒを得ること
ができた。SPECIFIC EXAMPLE 3 A long strip 1 and a lower mold 3 having the same size and shape as those used in Specific Example 1 and an upper punch with variously changed length b 2 in the longitudinal direction are used to compress in the plate thickness direction. Amount δ = 5mm, 2
When the pressurization length b = b 1 = 20 mm was processed after the first time, as shown in FIG. 6, various curvatures 1 / R were obtained in correspondence with the respective lengthwise pressurizing portion lengths b 2. I was able to get it.
第６図は、上ポンチの長手方向加圧部長さと曲がり曲率
との関係の一例を示すb2−１／Ｒ線図である。6 is a b 2 -1 / R diagram showing an example of the relationship between the longitudinal pressing length and bending curvature of the upper punch.
この第６図から明らかなように、上ポンチの長手方向加
圧部長さb2の増加とともに曲がりの曲率１／Ｒが減少す
る。As is apparent from FIG. 6, the curvature 1 / R of the bend decreases with an increase in the length b 2 of the upper punch in the longitudinal pressing portion.
以上説明した実施例によれば、専用設備を使用しなくて
も、既存のプレスにより、安価でしかも標準的形状の上
ポンチ２，下型３を使用して、長尺帯状品１、それはた
とえば大形であっても、それに容易に曲がりを付与する
ことができるという効果がある。また、一対の上ポンチ
２，下型３を使用して、数種類の曲げ量の付与すること
ができるという汎用性がある。According to the above-described embodiment, the long strip 1 can be formed by using the upper punch 2 and the lower die 3 which are inexpensive and have a standard shape by the existing press without using the dedicated equipment. Even if it is large, there is an effect that it can be easily bent. Further, there is versatility that several types of bending amounts can be applied by using the pair of upper punch 2 and lower die 3.
なお、前記実施例においては、付与すべき曲がりを制御
する要因として、上ポンチの長手方向加圧部長さb2およ
び板厚方向の圧縮量δを示したが、この他、２回目以降
の加圧長さb1あるいは下型の長手方向加圧部長さb3も制
御要因となる。In the above embodiment, the length b 2 of the upper punch in the longitudinal direction and the compression amount δ in the plate thickness direction are shown as factors for controlling the bending to be applied. The pressing length b 1 or the lengthwise pressing portion length b 3 of the lower mold also becomes a control factor.
また、前記実施例においては、長手方向の加圧長さｂ
は、１回目にｂ＝b2、２回目以降はｂ＝b2／２＝b1と
し、板厚方向の圧縮量はδ一定としたが、加圧長さｂ，
圧縮量の大きさは、これに限るものではなく、たとえ
ば、１回目にｂ＝b2、２回目以降ｂ＝２b2／３とし、圧
縮量は、全加圧長さｃの中央部分で2δ、その両側でδ
になるようにしてもよく、加圧長さ、圧縮量の大きさは
適当に決めてもよい。Further, in the above embodiment, the pressing length b in the longitudinal direction is
Is, b = b 2, 2 time onward and b = b 2/2 = b 1 for the first time, but the amount of compression in the thickness direction was constant [delta], pressurized圧長of b,
The size of the compressed volume is not limited to this, for example, and b = b 2, 2 subsequent b = 2b 2/3 for the first time, the amount of compression, 2.delta. In the central part of the total pressure圧長of c , Δ on both sides
Alternatively, the pressing length and the amount of compression may be appropriately determined.
さらに、前記実施例において、長尺帯状品１の１個所の
みに曲がりを付与するようにしたが、前記実施例で加圧
したと反対側も加圧することにより、逆の曲がりを連続
的に付与することができる。Further, in the above-described embodiment, the bending is applied to only one part of the long strip-shaped article 1. However, when the pressure is applied in the above-described embodiment, the opposite side is also pressed to continuously apply the reverse bending. can do.
以上詳細に説明したように本発明によれば、既存のプレ
スを使用することにより、低コストで、長尺帯状品に面
外曲げを付与することができる長尺帯状品の曲げ加工法
を提供することができる。As described in detail above, according to the present invention, by using an existing press, a method for bending a long strip-shaped article can be provided at a low cost, which is capable of imparting out-of-plane bending to the long strip-shaped article. can do.
第１〜４図は、本発明に係る基本的事項を説明するため
のものであり、第１図は、本発明に係る長尺帯状品の曲
げ加工法による加工状態を示す斜視図、第２図は、第１
図における上ポンチ，下型の詳細を示す斜視図、第３図
は、第２図における長尺帯状品（曲げ加工前）の斜視
図、第４図は、第１図に係る長尺帯状品の曲げ加工法に
よって、曲がりを付与された長尺帯状品の斜視図、第５
図は、圧縮量と曲がりの曲率との関係の一例を示すδ−
１／Ｒ線図、第６図は、上ポンの長手方向加圧部長さと
曲がりの曲率との関係の一例を示すb2−１／Ｒ線図であ
る。 １…長尺帯状品 1A…曲げを付与された長尺帯状品 ２…上ポンチ ２ａ …上ポンチの加圧面 ３…下型 ３ａ… 下型の加圧面 a2… 上ポンチの幅方向加圧部長さ a3… 下型の幅方向加圧部長さ ｂ…加圧長さ b2…上ポンチの長手方向加圧部長さ b3…下型の長手方向加圧部長さ ｃ…全加圧長さ ｈ…板厚 ｌ…長さ Ｒ…曲率半径 ｗ…板幅 δ…板厚方向の圧縮量1 to 4 are for explaining the basic matters according to the present invention, and FIG. 1 is a perspective view showing a processing state of a long strip-shaped article according to the present invention by a bending method, and FIG. The figure shows the first
FIG. 3 is a perspective view showing details of an upper punch and a lower die in the figure, FIG. 3 is a perspective view of a long strip (before bending) in FIG. 2, and FIG. 4 is a long strip according to FIG. FIG. 5 is a perspective view of a long strip-shaped article which is bent by the bending method of FIG.
The figure shows an example of the relationship between the amount of compression and the curvature of bending δ−
1 / R diagram, Figure 6 is a b 2 -1 / R diagram showing an example of the relationship between the longitudinal pressing length and bending curvature of the upper Pont. 1 ... widthwise pressing length of pressure face a 2 ... upper punch elongated strip article 1A ... bending pressing surface 3 ... lower mold 3a ... type under granted long strip article 2 ... upper punch 2a ... upper punch a Length a 3 … Length of pressing part in the width direction of lower mold b… Length of pressing b 2 … Length of pressing part in the longitudinal direction of upper punch b 3 … Length of pressing part in the longitudinal direction of lower mold c… Total pressing length h ... plate thickness l ... length R ... curvature radius w ... plate width δ ... compression amount in plate thickness direction
───────────────────────────────────────────────────── フロントページの続き (72)発明者 渡辺 忍 茨城県日立市幸町３丁目１番１号 株式会 社日立製作所日立工場内 (72)発明者 川田 陽一 茨城県日立市幸町３丁目１番１号 株式会 社日立製作所日立工場内 (56)参考文献 特開 昭51−14517（ＪＰ，Ａ) 特開 昭57−1523（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shinobu Watanabe 3-1-1 Sachimachi, Hitachi City, Ibaraki Prefecture Hitachi Ltd. Hitachi factory (72) Inventor Yoichi Kawada 3-chome, Hitachi City, Ibaraki Prefecture No. 1 Hitachi Ltd., Hitachi Works (56) References JP 51-14517 (JP, A) JP 57-1523 (JP, A)
Claims (1)
の板厚および板幅を有する帯板を、その長手方向へ送り
ながら、前記帯板を上方よりほぼ垂直に押圧する長方形
の加圧面を有する上ポンチと、該上ポンチの押圧力を前
記帯板を介して受ける平らな受圧面を有する下型とによ
り、順次加圧して曲げる長尺帯状品の曲げ加工法におい
て、 （１）前記上ポンチおよび下型の各加圧面の帯板長手方
向と直角方向の寸法を、帯板の板幅より十分大きくし、 （２）前記上ポンチおよび下型の各加圧面の帯板長手方
向の寸法ｂ２，ｂ３の関係をｂ２＜ｂ３とし、 （３）帯板の長手方向の所定の長さ範囲を、帯板の全板
幅にわたり長手方向に同一幅で、かつその板厚方向に一
様に平均して所定量圧縮されるように、上ポンチ加圧面
により加圧し、 （４）前記加圧時の帯板の板厚方向の圧縮量，寸法
ｂ２，加圧時の帯板長手方向の加圧寸法の各値に応じ
て、加圧された帯板の押圧面を内径として、任意に所定
の曲率半径の面外曲げを付与する、 ことを特徴とする長尺帯状品の曲げ加工法。1. A rectangular pressing surface for pressing a strip plate, which is made of a metal material such as aluminum and has a substantially constant plate thickness and plate width, in a longitudinal direction of the strip plate while pushing the strip plate substantially vertically from above. In a method of bending a long strip-shaped article, which is sequentially pressed and bent by an upper punch and a lower die having a flat pressure receiving surface that receives a pressing force of the upper punch via the strip plate, (1) the upper punch And the dimension of each pressing surface of the lower mold in the direction perpendicular to the longitudinal direction of the strip plate is made sufficiently larger than the plate width of the strip plate. (2) The dimension b of each pressing surface of the upper punch and the lower die in the longitudinal direction of the strip plate. The relationship between 2 and b 3 is b 2 <b 3, and (3) the predetermined length range in the longitudinal direction of the strip is the same width in the longitudinal direction over the entire width of the strip, and in the thickness direction thereof. Pressed by the upper punch pressure surface, so that it is uniformly averaged and compressed by a predetermined amount, (4) The pressing surface of the strip that has been pressed according to the compression amount in the plate thickness direction during pressing, the dimension b 2 , and the pressing dimension in the longitudinal direction of the strip during pressing A method for bending a long strip-shaped product, characterized in that an out-of-plane bending with a predetermined radius of curvature is arbitrarily set with the inside diameter as.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60084481A JPH062295B2 (en) | 1985-04-22 | 1985-04-22 | Bending method for long strips |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60084481A JPH062295B2 (en) | 1985-04-22 | 1985-04-22 | Bending method for long strips |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61242723A JPS61242723A (en) | 1986-10-29 |
| JPH062295B2 true JPH062295B2 (en) | 1994-01-12 |
Family
ID=13831832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60084481A Expired - Lifetime JPH062295B2 (en) | 1985-04-22 | 1985-04-22 | Bending method for long strips |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH062295B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5916293B2 (en) * | 2011-03-31 | 2016-05-11 | 三菱重工業株式会社 | Molding method of plate workpiece |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS571523A (en) * | 1980-06-03 | 1982-01-06 | Matsushita Electric Ind Co Ltd | Bending method for metallic sheet |
-
1985
- 1985-04-22 JP JP60084481A patent/JPH062295B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61242723A (en) | 1986-10-29 |
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