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External lamina unwinding method and manufacturing method thereof

A manufacturing method and panel unfolding technology, which are applied in the field of outer panel development and outer panel manufacturing, can solve the problems of difficult outer panel processing, not necessarily good processing efficiency, relying on experience, etc.

Inactive Publication Date: 2007-03-07
PORT & AIRPORT RES INST
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Problems solved by technology

[0003] However, in the case of processing a flat plate developed according to the conventional geodesic development method, etc., into an outer plate, it is difficult to say that it is suitable for processing the outer plate of the bow and stern parts with large curvature.
That is, it cannot be said that it is most suitable for developing a flat panel from the outer panel, and the processing amount of the outer panel from the expanded flat panel increases unnecessarily, and the processing efficiency may not always be good.
This is because the previous expansion method relies too much on experience

Method used

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  • External lamina unwinding method and manufacturing method thereof
  • External lamina unwinding method and manufacturing method thereof
  • External lamina unwinding method and manufacturing method thereof

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Embodiment Construction

[0026] With reference to the drawings, the embodiments of the outer panel unfolding method and the outer panel manufacturing method of the present invention will be described.

[0027] With reference to Figs. 1-8, the method for unfolding the outer panel of the present invention will be described.

[0028] First, the curved surface represented by the following formula (1) is used to express the outer panel Q shown in Fig. 2 as the target of the outer panel development method, and the shape (predetermined shape) of the outer panel Q is specified (Fig. 1 / S102). The outer panel Q shown in Fig. 2(a) is, for example, a metal outer panel constituting a part of the bow.

[0029] z=Q(x,y) ……(1)

[0030] Next, the "first process" (FIG. 1 / S110) is executed, that is, the process of determining the first tentatively profiled line and the second tentatively profiled line on the outer panel.

[0031] First, the direction when the curvature of the outer plate Q at the starting point is the maxi...

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Abstract

A method for developing an external plate and a process for producing an external plate in which production efficiency of the external plate can be enhanced by reducing the processing amount. In the method for developing the external plate, a first line being copied and a second line being copied are copied onto a flat plate as a first copying line and a second copying line. The actual length coordinates of the first line being copied and the geodetic curvature as a function thereof are matched to the actual length coordinates of the first copying line and the curvature as a function thereof. Relative position of the first copying line and arrangement of the second copying line in a copy region are determined such that the length of the second copying line in the copy region between adjacent first copying lines becomes not shorter than the length of a second copying line corresponding to the second copying line in the region being copied between adjacent first lines being copied corresponding to the copy region and the area of the copy region is minimized.

Description

Technical field [0001] The present invention relates to a method of unfolding an outer panel of a predetermined shape into a flat plate, and a method of manufacturing an outer panel of a predetermined shape from the flat plate. Background technique [0002] The metal outer plate of a predetermined shape constituting a part of the ship is manufactured by unfolding into a metal flat plate, and then processing the flat plate into the predetermined shape. In order to accurately process the flat plate into an outer plate of a predetermined shape, the outer plate needs to be appropriately expanded into a flat plate. [0003] However, in the case of processing a flat plate developed in accordance with the conventional geodesic expansion method or the like into an outer panel, it is difficult to say that it is suitable for processing the outer panel of the bow and stern part, which has a large curvature, in particular. That is, it cannot be said that it is most suitable for unfolding an ...

Claims

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Application Information

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IPC IPC(8): B21D11/20B63B9/06G06F17/50
CPCB63B9/06B21D11/20B63B73/50
Inventor 松冈一祥富泽茂
Owner PORT & AIRPORT RES INST
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