EP0213107A1 - Method and device for determining the bending curve for stretch bending the outside profile elements of a ship's hull - Google Patents

Method and device for determining the bending curve for stretch bending the outside profile elements of a ship's hull Download PDF

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Publication number
EP0213107A1
EP0213107A1 EP86890192A EP86890192A EP0213107A1 EP 0213107 A1 EP0213107 A1 EP 0213107A1 EP 86890192 A EP86890192 A EP 86890192A EP 86890192 A EP86890192 A EP 86890192A EP 0213107 A1 EP0213107 A1 EP 0213107A1
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EP
European Patent Office
Prior art keywords
ship
profile
bending
profile elements
determining
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.)
Ceased
Application number
EP86890192A
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German (de)
French (fr)
Inventor
Jaroslav Dipl.-Ing. Koser
Theodor Dipl.-Ing. Eder
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.)
Austria Metall AG
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Austria Metall AG
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Filing date
Publication date
Application filed by Austria Metall AG filed Critical Austria Metall AG
Publication of EP0213107A1 publication Critical patent/EP0213107A1/en
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B3/00—Hulls characterised by their structure or component parts
    • B63B3/14—Hull parts
    • B63B3/16—Shells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D25/00—Working sheet metal of limited length by stretching, e.g. for straightening
    • B21D25/02—Working sheet metal of limited length by stretching, e.g. for straightening by pulling over a die

Definitions

  • the present invention relates to a teaching adjustable by means of screw clamps from profile elements, which are connected by means of tabs, for determining the bending curves for ship's outer profiles.
  • a ship's hull is made from individual extruded profiles which engage in a tongue-and-groove manner and are screwed together by means of flanges and screwed to one another and to the transverse chip skeleton.
  • the determination of the bending curve (saber), which is different for each profile according to the trunk curvature, is the task for the present invention. It is known that an adjustable gauge, which consists of profile elements, which are adjustably connected to one another by tabs and with screws are noticeable and still have movable needles to use for the precise removal of the contour of a car body, but this device is not applicable for the above-mentioned purpose, where the longitudinal curve (saber) of a particular profile with different flange thickness, which is obtained by a different bending behavior, must be determined.
  • FIG. 1 shows the jig attached to a hull under construction for removing the bending profile
  • Fig. 2 shows a section of the jig in elevation
  • Fig. 3 in cross-section, along the line A / a of Fig. 2.
  • Fig. 4 shows the cross section of FIG. 1st
  • the teaching 1 consists of a plurality of profile sections 2 of the same profile as it is used for the ship's skin 3, so that it fits into the profiles 3 and can be easily inserted into one another.
  • These sections 2 are connected to one another by tabs 4 with screws 5, the screw holes being so large or oblong holes that there is an angular adjustability.
  • the profile sections 2 are chamfered at the corners 6. The process is now as follows:
  • the gauge 1 It is first placed the gauge 1 with loosened screws 5 on the transverse chip skeleton 7 and bent so that it lies on the entire length. Then the screws 5 are tightened and thus fix the curvature.
  • the gauge 1 is now removed and placed either on the floor or on the bending machine, the curvature is measured and transferred to the stop blocks of the bending machine and thus this is then adjusted. Then the corresponding hull outer profile 3 is bent and mounted on the transverse span skeleton 7. Now the gauge 1 is used again and is placed on the assembled outer hull profile 3, thus determining the shape of the next outer hull profile 3 until the hull is finished.
  • the long flanges 8 are cut to the width of the other flanges (FIG. 4) on the profile sections 2 of the gauge 1, which come into contact with the transverse ribs 7 that a smaller width is created by this flange height, which causes a greater inclination of the gauge than it would correspond to the ship's cross-section when mooring and tightening with screw clamp 9 or the like (FIGS. 1 and 4). This marks a lower saber curve than it would correspond to the fuselage.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

The present invention relates to a template, which can be adjusted by means of screw clamps and consists of profile elements (2) which are connected by means of straps (4), for determining the bending curves for outside profiles (3) of a ship's side, the profile elements consisting of sections (2) of the profile (3) of the ship's side which are connected to one another by means of screws (5) and straps (4), but in the case of non-uniform flanges the thicker flange part (8) is recessed, i.e. is reduced to the width of the thinner flange, at those points where the profile bears against the bulkheads. <IMAGE>

Description

Die vorliegende Erfindung betrifft ein mittels Schraub­klemmen verstellbare Lehre aus Profilelementen, die mit­tels Laschen verbunden sind, zur Bestimmung der Biege­kurven für Schiffswandaußenprofile.The present invention relates to a teaching adjustable by means of screw clamps from profile elements, which are connected by means of tabs, for determining the bending curves for ship's outer profiles.

Wie in der AT-PS 375 320 und den Patentanmeldungen EPA 0 049 871 und EPA 0 119 398 beschrieben, wird ein Schiffs­körper aus einzelnen Strangpreßprofilen hergestellt, die nut- und federartig ineinandergreifen und mittels Flan­schen miteinander und mit dem Querspantenskelett ver­schraubt sind. Dazu ist es erforderlich, die Profile, die in Folge ihrer Flanschen sehr steif sind, um beide Trägheitsachsen zu biegen. Besonders das Biegen um die große Trägheitsachse mit dem großen Widerstandsmoment bereitet dabei die größten Schwierigkeiten, da hiezu eigene Vorrichtungen, z.B. die Reckbiegemaschine gemäß EPA 0 177 027 zum Einsatz gelangen müssen und die Anfor­derungen an die Genauigkeit groß sind, da sonst die Pro­file nicht auf der ganzen Länge ineinander passen.As described in AT-PS 375 320 and patent applications EPA 0 049 871 and EPA 0 119 398, a ship's hull is made from individual extruded profiles which engage in a tongue-and-groove manner and are screwed together by means of flanges and screwed to one another and to the transverse chip skeleton. This requires the profiles, which are very stiff due to their flanges, to bend both axes of inertia. Bending around the large axis of inertia with the large section modulus is particularly difficult because of the use of separate devices, e.g. the stretch bending machine in accordance with EPA 0 177 027 must be used and the requirements for accuracy are high, otherwise the profiles would not fit into one another over their entire length.

Die Bestimmung der Biegekurve (Säbelung), die für jedes Profil entsprechend der Rumpfkrümmung anders ist, stellt die Aufgabe für vorliegende Erfindung dar. Es ist zwar be­kannt, daß eine verstellbare Lehre, welche aus Profilele­menten besteht, die miteinander durch Laschen verstellbar verbunden und mit Schrauben feststellbar sind und noch verschiebbare Nadeln besitzen, zum genauen Abnehmen der Kontur einer Autokarosserie zu verwenden, doch ist dieses Gerät für den oben angeführten Zweck nicht anwendbar, wo die Längskurve (Säbelung) eines bestimmten Profils mit un­terschiedlicher Flanschstärke, welches durch ein unter­schiedliches Biegeverhalten erhält, bestimmt werden muß.The determination of the bending curve (saber), which is different for each profile according to the trunk curvature, is the task for the present invention. It is known that an adjustable gauge, which consists of profile elements, which are adjustably connected to one another by tabs and with screws are noticeable and still have movable needles to use for the precise removal of the contour of a car body, but this device is not applicable for the above-mentioned purpose, where the longitudinal curve (saber) of a particular profile with different flange thickness, which is obtained by a different bending behavior, must be determined.

Bei stark unterschiedlichen Flanschstärken ergibt sich nämlich noch zusätzlich das Problem, daß beim Auflegen und Biegen um die kleine Trägheitsachse bei der Montage zur Befestigung an den Querspanten sich die einmal fest­gestellte und auf der Biegemaschine erzeugte Kurve än­dert, also die Säbelung verstärkt oder vermindert wird. Dieses Problem wird erfindungsgemäß dadurch gelöst, daß die Lehre aus Abschnitten des Schiffswandprofiles be­stehen, die mittels Schrauben und Laschen untereinander verbunden sind, wobei im Falle ungleichförmiger Flan­schen jedoch der dickere Flanschteil an jenen Stellen, wo das Profil an den Querspanten anliegt, ausgenommen ist. Beim Anlegen wird somit die Lehre zu den Querspan­ten hingespannt und in schräggestellter Lage fixiert, zur Kompensation unterschiedicher Biegeverhältnisse bei ungeichen Flanschen.In the case of widely differing flange thicknesses, there is also the additional problem that when laying on and bending around the small axis of inertia during assembly for fastening to the transverse frames, the curve once determined and generated on the bending machine changes, that is to say the saber is increased or decreased. This problem is solved according to the invention in that the teaching consists of sections of the ship's wall profile which are connected to one another by means of screws and brackets, but in the case of non-uniform flanges the thicker flange part is excluded at those points where the profile lies against the transverse ribs. When creating, the gauge is stretched towards the transverse frames and fixed in an inclined position, to compensate for different bending conditions in the case of uneven flanges.

Der Gegenstand der Erfindung ist in der Zeichnung bei­spielsweise dargestellt. Darin zeigen Fig. 1 die auf einem in Bau befindlichen Schiffskörper angebrachte Lehre zur Abnahme des Biegeprofiles, Fig. 2 einen Ab­schnitt der Lehre im Aufriß und Fig. 3 im Querschnitt, gemäß der Linie A/a der Fig. 2. Fig. 4 zeigt den Quer­schnitt der Fig. 1.The object of the invention is shown for example in the drawing. 1 shows the jig attached to a hull under construction for removing the bending profile, Fig. 2 shows a section of the jig in elevation and Fig. 3 in cross-section, along the line A / a of Fig. 2. Fig. 4 shows the cross section of FIG. 1st

Wie man aus der Zeichnung erkennen kann, besteht die Lehre 1 aus einer Vielzahl von Profilabschnitten 2 des gleichen Profiles, wie es für die Schiffshaut 3 verwen­det wird, so daß sie in die Profile 3 hineinpaßt und leicht ineinandergefügt werden kann. Diese Abschnitte 2 sind durch Laschen 4 mit Schrauben 5 miteinander verbun­den, wobei die Schraublöcher so groß oder Langlöcher sind, daß eine Winkelverstellbarkeit gegeben ist. Zur Er­eichterung des Einfügens sind die Profilabschnitte 2 an den Ecken 6 abgeschrägt. Der Ablauf ist nun folgender:As can be seen from the drawing, the teaching 1 consists of a plurality of profile sections 2 of the same profile as it is used for the ship's skin 3, so that it fits into the profiles 3 and can be easily inserted into one another. These sections 2 are connected to one another by tabs 4 with screws 5, the screw holes being so large or oblong holes that there is an angular adjustability. To facilitate insertion, the profile sections 2 are chamfered at the corners 6. The process is now as follows:

Es wird zuerst die Lehre 1 mit gelockerten Schrauben 5 auf das Querspantenskelett 7 aufgelegt und so gebogen, daß sie auf der ganzen Länge anliegt. Sodann werden die Schrauben 5 festgezogen und damit die Krümmung fixiert. Die Lehre 1 wird nun abgenommen und entweder auf dem Bo­den oder auf die Biegemaschine aufgelegt, die Krümmung ausgemessen und auf die Anschlagböcke der Biegemaschine übertragen und somit diese danach eingestellt. Sodann wird das entsprechende Schiffsrumpfaußenprofil 3 ge­bogen und auf das Querspantenskelett 7 montiert. Nun ge­langt wieder die Lehre 1 zum Einsatz und wird auf das montierte Schiffsrumpfaußenprofil 3 aufgelegt und damit die Form des nächsten Schiffsrumpfaußenprofiles 3 be­stimmt, bis der Schiffskörper fertig ist.It is first placed the gauge 1 with loosened screws 5 on the transverse chip skeleton 7 and bent so that it lies on the entire length. Then the screws 5 are tightened and thus fix the curvature. The gauge 1 is now removed and placed either on the floor or on the bending machine, the curvature is measured and transferred to the stop blocks of the bending machine and thus this is then adjusted. Then the corresponding hull outer profile 3 is bent and mounted on the transverse span skeleton 7. Now the gauge 1 is used again and is placed on the assembled outer hull profile 3, thus determining the shape of the next outer hull profile 3 until the hull is finished.

Um auch bei stark unterschiedlichen Flanschstärken der Schiffsrumpfaußenprofile 3 die richtige Endkurve zu er­halten, sind an den Profilabschnitten 2 derLehre 1, welche an den Querspanten 7 zur Anlage kommen, die lan­gen Flanschen 8 auf die Breite der anderen Flansche (Fig. 4) abgeschnitten, so daß eine um diese Flansch­höhe geringere Breite entsteht, die beim Anlegen und Festspannen mit Schraubzwinge 9 oder dgl. (Fig. 1 und 4) eine größere Schrägstellung der Lehre bewirkt, als sie dem Schiffsquerschnitt entsprechen würde. Dadurch wird eine geringere Säbelungskurve markiert, als sie dem Rumpfverlauf entsprechen würde. Diese ist aber die Kom­pensation dafür, daß beim Biegen um die kleine Trägheits­achse in Folge der größeren Dehnungen des steiferen Flan­sches ein zusätzlicher Säbelungseffekt auftritt, der sonst zu einer Über- bzw. Untersäbelung führen würde.In order to obtain the correct end curve even with greatly differing flange thicknesses of the ship's hull outer profiles 3, the long flanges 8 are cut to the width of the other flanges (FIG. 4) on the profile sections 2 of the gauge 1, which come into contact with the transverse ribs 7 that a smaller width is created by this flange height, which causes a greater inclination of the gauge than it would correspond to the ship's cross-section when mooring and tightening with screw clamp 9 or the like (FIGS. 1 and 4). This marks a lower saber curve than it would correspond to the fuselage. However, this is the compensation for the fact that when bending about the small axis of inertia, due to the larger expansions of the stiffer flange, an additional saber effect occurs, which would otherwise lead to over- or under-sabering.

Claims (2)

1. Mittels Schraubklemmen verstellbare Lehre aus Profil­elementen, die mittels Laschen verbunden sind, zur Bestimmung der Biegekurven für Schiffswandaußenpro­file, dadurch gekennzeichnet, daß die Profilelemente aus Abschnitten (2) des Schiffswandprofiles (3) be­stehen, die mittels Schrauben (5) und Laschen (4) un­tereinander verbunden sind, wobei im Falle ungleich­förmiger Flanschen jedoch der dickere Flanschteil (8) an jenen Stellen, wo das Profil (3) an den Querspan­ten anliegt, ausgenommen, d.h. auf die Breite des dünneren Flansches reduziert ist.1. Adjustable by means of screw clamps made of profile elements, which are connected by means of tabs, for determining the bending curves for ship's outer profiles, characterized in that the profile elements consist of sections (2) of the ship's wall profile (3), which by means of screws (5) and tabs (4th ) are interconnected, but in the case of non-uniform flanges, the thicker flange part (8) is excluded at those points where the profile (3) lies against the transverse ribs, ie is reduced to the width of the thinner flange. 2. Lehre nach Anspruch 1, dadurch gekennzeichnet, daß die Abschnitte (2) an der unteren Seite an den Ecken zum leichteren Einhängen abgeschrägt sind.2. Teaching according to claim 1, characterized in that the sections (2) are chamfered on the lower side at the corners for easier hanging.
EP86890192A 1985-07-01 1986-06-26 Method and device for determining the bending curve for stretch bending the outside profile elements of a ship's hull Ceased EP0213107A1 (en)

Applications Claiming Priority (2)

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AT1947/85 1985-07-01
AT194785 1985-07-01

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EP0213107A1 true EP0213107A1 (en) 1987-03-04

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EP86890192A Ceased EP0213107A1 (en) 1985-07-01 1986-06-26 Method and device for determining the bending curve for stretch bending the outside profile elements of a ship's hull

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6666162B2 (en) * 2001-06-21 2003-12-23 Darris E. Allison Aluminum hull boat with extruded running surface

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0049871A2 (en) * 1980-10-13 1982-04-21 Austria Metall Aktiengesellschaft Procedure for constructing a ship's hull and apparatus for the production of ship hull profiles
EP0119398A1 (en) * 1983-01-24 1984-09-26 Austria Metall Aktiengesellschaft Hollow body, especially a ship's hull

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0049871A2 (en) * 1980-10-13 1982-04-21 Austria Metall Aktiengesellschaft Procedure for constructing a ship's hull and apparatus for the production of ship hull profiles
EP0119398A1 (en) * 1983-01-24 1984-09-26 Austria Metall Aktiengesellschaft Hollow body, especially a ship's hull

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6666162B2 (en) * 2001-06-21 2003-12-23 Darris E. Allison Aluminum hull boat with extruded running surface

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