JPH04158929A - Method for controlling shape of complex curved surface forming - Google Patents
Method for controlling shape of complex curved surface formingInfo
- Publication number
- JPH04158929A JPH04158929A JP28260190A JP28260190A JPH04158929A JP H04158929 A JPH04158929 A JP H04158929A JP 28260190 A JP28260190 A JP 28260190A JP 28260190 A JP28260190 A JP 28260190A JP H04158929 A JPH04158929 A JP H04158929A
- Authority
- JP
- Japan
- Prior art keywords
- roll
- curved surface
- rolls
- exit
- side roll
- 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
- 238000000034 method Methods 0.000 title claims description 13
- 230000037303 wrinkles Effects 0.000 abstract description 6
- 238000000465 moulding Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Landscapes
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は船体の外板の如く多品種少量生産に適する複雑
な三次元的曲面を呈する複曲面を成形する方法に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for forming a multi-curved surface exhibiting a complex three-dimensional curve suitable for high-mix, low-volume production, such as the outer panel of a ship's hull.
〈従来の技術〉
従来、船の外板はプレスによる部分押しの後ガスバーナ
ーによる線状加熱によって複曲面成形を行っていた。こ
の線状加熱は手作業であり、作業に長時間を要するだけ
でなく、熟練者の高度の経験と勘を必要とするものであ
った。<Prior Art> Conventionally, the outer panels of ships have been formed into multi-curved surfaces by partially pressing them with a press and then linearly heating them with a gas burner. This linear heating is a manual process, which not only takes a long time, but also requires a high level of experience and intuition from a skilled worker.
この船体の外板の成形の自動化を図るため、日本造船研
究会では多点プレスの研究を行っている。しかしこの方
法は制御点数が非常に多くなり大規模な設備とならざる
を得ない。In order to automate the forming of hull outer panels, the Japan Shipbuilding Research Society is conducting research on multi-point presses. However, this method requires a very large number of control points and requires large-scale equipment.
また、三菱重工枝軸（Ｖｏｊ、１３．隘６．昭和５１年
）には三条プレスと称する複曲面成形機が開示され、制
御点数を三列にまで減少させてはいるが、やはり相当数
の制御点数を必要とすることには変わらない。In addition, Mitsubishi Heavy Industries Branch Axis (Voj, 13.6.1978) disclosed a multi-curved surface forming machine called Sanjo Press, which reduced the number of control points to three rows, but still had a considerable number of control points. The number of control points is still required.
上記諸問題を解消し、制御点数を少なくし、しかも成形
性の良好な複曲面の成形方法として、本件出願人は先に
特開昭６２−２３４６１９号公報、特開昭６３−１４９
０２０号公報および特開平１−２５４３２５号公報に開
示されるような成形方法を提起した。In order to solve the above-mentioned problems, reduce the number of control points, and provide a method for forming multi-curved surfaces with good formability, the applicant of the present application previously published Japanese Patent Application Laid-Open No. 62-234619 and Japanese Patent Application Laid-Open No. 63-149.
A molding method as disclosed in Japanese Patent Publication No. 020 and Japanese Patent Application Laid-open No. 1-254325 was proposed.
ところがこれらの複曲面成形方法では可撓ロールの後、
前に配置しである入口側ロール、出口側ロールに平ロー
ルを用いており、この場合ロールと被加工材の接触域が
板幅の中央部付近であるので、被加工材はスプリングバ
ックによる成形断面の戻りが大きく、またシワ等の成形
不良が生じ易いという問題点があった。However, in these multi-curved surface forming methods, after the flexible roll,
Flat rolls are used for the entrance side roll and exit side roll, which are placed at the front.In this case, the contact area between the roll and the workpiece is near the center of the plate width, so the workpiece is formed by springback. There were problems in that the cross-section returned to a large extent and molding defects such as wrinkles were likely to occur.
〈発明が解決しようとする課題〉
本発明は上記従来技術の有する諸問題を解消し、より優
れた複曲面成形の形状制御法を提供することを目的とす
る。<Problems to be Solved by the Invention> It is an object of the present invention to solve the problems of the above-mentioned prior art and to provide a more excellent shape control method for multi-curved surface forming.
く課題を解決する為の手段〉
上記目的を達成する為に本発明が採用する手段は次の通
りである。即ち被加工材を、その進行方向と直交する方
向に上下から屈曲自在な可視ロール間を通過させ、さら
に可視ロールより後方ならびに前方に設置された入口側
ロールならびに出口側ロールにより、被加工材を三次元
的な複曲面に成形する方法に於いて、入口側ロール、出
口側ロールの上、下ロールに径の異なる数個の平ロール
を組込み、これらのロール間の距離を調整して設定曲率
を変えると共に、被加工材の長手方向の流れに応じて入
口側ロール、出口側ロールが自由に傾斜する構成とした
複曲面成形の形状制御法である。つまり入口側ロール、
出口側ロールの上、下ロール軸に径の異なる数個の狭幅
の平ロールを組込み、これらのロール間の軸方向の距離
を調整して任意の曲率径に設定し、またこの入口側ロー
ル、出口側ロールはスタンドの中央にある回転軸を中心
にして自由に首振り傾斜が可能で被加工材の長手方向の
流れに応じて傾斜し成形を良好にするのである。Means for Solving the Problems> The means adopted by the present invention to achieve the above objects are as follows. In other words, the workpiece is passed between visible rolls that can be bent from above and below in a direction perpendicular to the direction of movement of the workpiece, and then the workpiece is passed through an inlet roll and an exit roll installed behind and in front of the visible roll. In the method of forming a three-dimensional multi-curved surface, several flat rolls with different diameters are incorporated into the entrance roll, the upper roll, and the lower roll of the exit roll, and the distance between these rolls is adjusted to achieve the set curvature. This is a shape control method for multi-curved surface forming in which the inlet side roll and outlet side roll are configured to freely incline according to the longitudinal flow of the workpiece. In other words, the entrance side roll,
Several narrow flat rolls with different diameters are installed on the upper and lower roll shafts of the exit roll, and the axial distance between these rolls is adjusted to set the desired curvature diameter. The exit roll can freely swing and tilt around the rotating shaft in the center of the stand, and tilts according to the longitudinal flow of the workpiece to improve forming.
〈実施例及び作用〉
以下本発明をその実施例を示す図面を参酌し乍ら詳述す
る。第１図〜第４図は本発明実施例に用いた装置を示す
が、第１図に示す如く、基台１上に入口側ロール２、可
撓ロール３、出口側ロール４の順位で配設されている。<Embodiments and Operations> The present invention will be described in detail below with reference to drawings showing embodiments thereof. 1 to 4 show the apparatus used in the embodiment of the present invention. As shown in FIG. 1, an entrance roll 2, a flexible roll 3, and an exit roll 4 are arranged on a base 1 in this order. It is set up.
被加工材ａはこれらのロール間を通って加工される。可
撓ロール３は第２図に示すように屈曲自在な回転軸の外
周にスリーブが外嵌され、各スリーブ間にボールジヨイ
ント５が配されている。第３図及び第４図は入口側ロー
ル及び出口側ロールの詳細を示すが、これら両図面に示
す如く、入口側ロール及び出口側ロールはその上ロール
６及び下ロール７共に径の異なる数個の平ロールより成
っており、しかも両側のスタンド８の中心に枢支されて
いる回転軸９を中心に首振り回転をするようになってい
る。The workpiece a is processed by passing between these rolls. As shown in FIG. 2, the flexible roll 3 has a sleeve fitted around the outer periphery of a freely bendable rotating shaft, and a ball joint 5 is arranged between each sleeve. 3 and 4 show the details of the inlet-side roll and the outlet-side roll, and as shown in these figures, the inlet-side roll and the outlet-side roll have several upper rolls 6 and lower rolls 7 with different diameters. It is made up of a flat roll and is designed to oscillate around a rotating shaft 9 that is pivotally supported at the center of the stands 8 on both sides.
上記第１図〜第４図に示す如き装置を用い下記する各種
実験を行った。以下にその実験及び結果′を示す。The following various experiments were conducted using the apparatus shown in FIGS. 1 to 4 above. The experiment and results are shown below.
（１）入口側ロール、出口側ロールの首振りの影響入口
側ロール、出口側ロールの首振り自由の場合と、上・下
ロールを垂直に固定する場合を比較するための成形実験
を行った。第５図は複曲面成形における板幅方向の曲げ
程度をあられす断面成形加工度ψ（＝ｐｘｏ／ｐｘ）と
長手方向の曲率１／ｐｙの関係を入口側ロール、出口側
ロールの傾斜自由と固定の結果を示す、ここで、Ｉ’Ｘ
Ｏは可撓ロールの設定輪郭形状の曲率半径〈第２図参照
〉ρ８は複曲面成形された被加工材の板幅方向の成形曲
率半径である。第５図中のＸ印はシワ発生点であり傾斜
自由の方が固定に比べてシワ発生が遅いので加工限界が
大きいことが判る。(1) Influence of swinging of the entrance and exit rolls A forming experiment was conducted to compare the cases where the entrance and exit rolls were free to swing and the cases where the upper and lower rolls were fixed vertically. . Figure 5 shows the relationship between the cross-sectional forming degree ψ (=pxo/px), which indicates the degree of bending in the width direction of the plate in multi-curved surface forming, and the longitudinal curvature 1/py, and the free inclination of the inlet and outlet rolls. Denotes a fixed result, where I'X
O is the radius of curvature of the set profile of the flexible roll (see FIG. 2); ρ8 is the radius of curvature in the width direction of the workpiece formed into a multi-curved surface. The mark X in FIG. 5 is the wrinkle generation point, and it can be seen that the processing limit is larger in the case of free tilting because wrinkles occur more slowly than in the fixed case.
第６図は入口側ロール、出口側ロール固定と傾斜自由の
成形断面の曲率分布の測定結果を示す。固定の場合、被
加工材の中央部付近で曲率が負の領域を生じ、へこみが
あられれ、滑らかな曲面が得られない場合がある。一方
、傾斜自由の場合、比較的滑らかな曲面となり成形は良
好である。FIG. 6 shows the measurement results of the curvature distribution of the molded cross section with the entrance roll, the exit roll fixed, and the free tilt. In the case of fixation, a region with negative curvature occurs near the center of the workpiece, and dents may occur, making it impossible to obtain a smooth curved surface. On the other hand, in the case of free tilting, the curved surface is relatively smooth and the molding is good.
以上より、入口側ロール、出口側ロールの首振りは固定
よりも傾斜自由の方が複曲面成形においては適している
が判る。From the above, it can be seen that the swinging of the entrance side roll and exit side roll is more suitable for multi-curved surface molding if it is tilted freely rather than fixed.
（２１入口側ロールの作用
入口側ロールの設定曲率ｌ／ρ、１を変えて成形した結
果を第７図に示す、ここでは入口側ロールの設定曲率比
λ１（＝ｌ）Ｘ。／ρ、】）をパラメータとし、合わせ
て板幅の中央のみ作用１両端フリーの結果も示す。Ｘ印
はシワ発生点であり、λ１が大きくなるほど加工限界点
は大きくなり、＾１に１付近が一番大きいものである。(21 Action of the inlet side roll Figure 7 shows the results of forming by changing the set curvature l/ρ, 1 of the inlet side roll. Here, the set curvature ratio λ1 (=l) ]) as a parameter, and also show the results when only the center of the plate width is applied and both ends are free. The mark X is the wrinkle generation point, and the larger λ1 is, the larger the processing limit point is, and the largest one is near 1 in ^1.
この結果より、入口側ロールの設定曲率を調整すること
により加工限界を大きくすることが可能である。From this result, it is possible to increase the processing limit by adjusting the set curvature of the entrance roll.
（３） 出口側ロールの作用
出口側ロールの設定曲率１／ｐａｚを変えて成形した結
果、ψと出口側ロールの設定曲率比λ２（＝ｐ８゜／ｐ
＊２）の関係を第８図に示す。λ２を大きくするとψが
大きくなる。このことよりψはλ２によって変えること
ができる。即ち、複曲面成形における被加工材の板幅方
向の曲げ形状を出口側ロールの設定曲率によって形状制
御することが可能である。(3) Effect of the exit-side roll As a result of forming by changing the set curvature 1/paz of the exit-side roll,
The relationship *2) is shown in Figure 8. Increasing λ2 increases ψ. From this, ψ can be changed by λ2. That is, it is possible to control the bending shape of the workpiece in the sheet width direction in multi-curved surface forming by controlling the set curvature of the exit roll.
本来、可撓ロールによる入口側ロールと出口側ロールの
高さにより制御することができ、−方板幅方向は可視ロ
ールの各ロールスタンドの高さの調整による設定輪郭形
状により制御する必要がある。しかし可撓ロールのロー
ルスタンドは数多いため、制御点数が多数となり、本格
的な制御システムとならざるを得ない０本発明の方法は
複曲面の板幅方向の形状制御として出口側ロールの設定
曲率を制御するという制御点数の少ない簡易型の制御が
可能である。Originally, it can be controlled by the height of the entrance side roll and exit side roll of the flexible roll, and - the width direction of the square plate needs to be controlled by the set contour shape by adjusting the height of each roll stand of the visible roll. . However, since there are many roll stands for flexible rolls, the number of control points becomes large, and a full-scale control system is required. Simple control with a small number of control points is possible.
〈発明の効果〉
以上述べてきた如く、本発明方法によれば、入口側ロー
ル、出口側ロールの上、下ロールに径の異なる数個の平
ロールを組込み、かつこれら入口側ロール及び出口側ロ
ールを首振り自在と構成したことにより、少ない制御点
数により複曲面の成形が可能であり、かつまた加工限界
を大きくすることが出来ると共に成形後の製品はシワが
なく滑らかなものになるという効果がある。<Effects of the Invention> As described above, according to the method of the present invention, several flat rolls with different diameters are incorporated into the inlet side roll and the upper and lower rolls of the outlet side roll, and the inlet side roll and the outlet side By configuring the roll to swing freely, it is possible to form multiple curved surfaces with a small number of control points, and the processing limit can also be increased, and the product after forming is smooth without wrinkles. There is.
第１図は本発明を実施する為の装置の全体概要を示す側
面図、第２図は同正面図、第３図は同人口側ロール、出
口側ロール部分の正面図、第４図は同側面図、第５区は
入口側ロール、出口側ロールの首振り傾斜の有無におけ
る断面成形加工度ψと長手方向の曲率１／ρ、の関係を
示す図、第６図は首振りの有無における断面の曲率分布
を示す図、第７図は入口側ロールの設定曲率比λ１を変
えた場合のψとｌ／ρ、の関係図、第８図はψと出口側
ロールの設定曲率比λ２との関係図。
図中、２：入口側ロール
３：可視ロール
４、出口側ロール
６：上ロール
７：下ロールFig. 1 is a side view showing the overall outline of the device for carrying out the present invention, Fig. 2 is a front view of the same, Fig. 3 is a front view of the inlet side roll and exit side roll portions, and Fig. 4 is the same. Side view, section 5 is a diagram showing the relationship between cross-sectional forming degree ψ and longitudinal curvature 1/ρ with and without oscillation of the inlet side roll and exit side roll, and Fig. 6 is with and without oscillation. Figure 7 shows the relationship between ψ and l/ρ when the set curvature ratio λ1 of the inlet roll is changed, and Figure 8 shows the relationship between ψ and the set curvature ratio λ2 of the exit roll. Relationship diagram. In the figure, 2: Entrance side roll 3: Visible roll 4, Exit side roll 6: Upper roll 7: Lower roll
Claims (1)
ら屈曲自在な可撓ロールより後方ならびに前方に設置さ
れた入口側ロールならびに出口側ロールにより、被加工
材を三次元的な複曲面に成形する方法に於いて、入口側
ロール、出口側ロールの上、下ロールに径の異なる数個
の平ロールを組込み、これらのロール間の距離を調整し
て設定曲率を変えると共に、被加工材の長手方向の流れ
に応じて入口側ロール、出口側ロールが自由に傾斜する
構成としたことを特徴とする複曲面成形の形状制御法。1. The workpiece is shaped into a three-dimensional multi-curved surface by an entrance roll and an exit roll installed behind and in front of a flexible roll that can bend the workpiece from above and below in a direction perpendicular to the direction of movement of the workpiece. In this method, several flat rolls with different diameters are incorporated into the entrance roll and the upper and lower rolls of the exit roll, and the distance between these rolls is adjusted to change the set curvature. A shape control method for multi-curved surface forming, characterized in that an entrance side roll and an exit side roll are configured to freely incline according to the longitudinal flow of the material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28260190A JPH04158929A (en) | 1990-10-19 | 1990-10-19 | Method for controlling shape of complex curved surface forming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28260190A JPH04158929A (en) | 1990-10-19 | 1990-10-19 | Method for controlling shape of complex curved surface forming |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04158929A true JPH04158929A (en) | 1992-06-02 |
Family
ID=17654632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28260190A Pending JPH04158929A (en) | 1990-10-19 | 1990-10-19 | Method for controlling shape of complex curved surface forming |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04158929A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012132791A1 (en) * | 2011-03-31 | 2012-10-04 | 三菱重工業株式会社 | Plate-shaped workpiece forming method, and formed workpiece |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5754889U (en) * | 1980-09-11 | 1982-03-31 | ||
| JPS63149020A (en) * | 1986-12-12 | 1988-06-21 | Agency Of Ind Science & Technol | Forming method for double curved plane |
-
1990
- 1990-10-19 JP JP28260190A patent/JPH04158929A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5754889U (en) * | 1980-09-11 | 1982-03-31 | ||
| JPS63149020A (en) * | 1986-12-12 | 1988-06-21 | Agency Of Ind Science & Technol | Forming method for double curved plane |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012132791A1 (en) * | 2011-03-31 | 2012-10-04 | 三菱重工業株式会社 | Plate-shaped workpiece forming method, and formed workpiece |
| JP2012213792A (en) * | 2011-03-31 | 2012-11-08 | Mitsubishi Heavy Ind Ltd | Method for forming plate-shaped workpiece and formed body |
| US9757791B2 (en) | 2011-03-31 | 2017-09-12 | Mitsubishi Heavy Industries, Ltd. | Plate-shaped workpiece forming method |
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