JPS5917948B2 - Manufacturing method of honeycomb sand germanchi panel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The object of the present invention is to easily produce a highly accurate and rigid curved surface in a sandwich panel made of a skin material such as FRP and a honeycomb core material such as aluminum.

The conventional method of obtaining a curved sandwich panel using honeycomb core material is to cut the honeycomb material into thin strips or elongated Ξ-gons, arrange them and bend each honeycomb into a curved surface to produce a curved panel. In order to manufacture the honeycomb, it was necessary to divide the honeycomb material into many pieces.Also, since the divided honeycombs are molded into curved surfaces, there is a restriction on the thickness of the honeycomb, so it was necessary to use thick honeycomb material. There were disadvantages such as difficulty in using the honeycomb material.In addition, buckling occurred due to bending of the honeycomb material, making it difficult to obtain a highly accurate curved surface.This invention solves these disadvantages. and
The embodiment will be described in detail with reference to the drawings.

FIG. 1 is a perspective view i of a honeycomb block 1 obtained by cutting a sheet-like aluminum honeycomb material into hexagonal shapes. FIG. 2 is a sectional view taken along line 1--2 in FIG. 1, in which one side of the hexagonal honeycomb block 1 is cut into a spherical surface with a radius R.

FIG. 3 is a sectional view of a honeycomb sandwich panel manufactured by arranging hexagonal honeycomb blocks 1 with one side cut into a spherical surface to form a spherical surface, and bonding a skin material 2 to both surfaces of the hexagonal honeycomb blocks 1.

The honeycomb sandwich curved panel manufactured by the above method has a highly accurate curved surface without causing deformation because no excessive force is applied to the honeycomb.

Furthermore, since there is no need to bend the honeycomb material, if it is necessary to manufacture a panel with high rigidity, it is easy to make the honeycomb material thicker. Each curved surface of a paraboloid of revolution etc. other than a spherical surface can be approximated as a spherical surface, and by selecting an appropriate size for the honeycomb block 1, the error with the spherical surface can be reduced.

The shape of the honeycomb block 1 may be triangular or square, but in these cases, the joints of the honeycomb block 1 are in a straight line, which may reduce the strength of that part.

The hexagonal configuration has excellent characteristics since it does not have these drawbacks and there is little difference in thickness around the honeycomb block 1. F. The antenna using the honeycomb sandwich structure panel produced according to this invention can be made large in size, and the panel has great rigidity, so there is no need to insert ribs etc. inside, and it has excellent It has effects such as mirror precision.

[Brief explanation of the drawing]

The figures show the embodiments of this invention step by step.
Figure 1 is a perspective view of a honeycomb block, Figure 2 is a cross-sectional view taken along the line shown in Figure 1 with one side of the honeycomb block cut into a spherical surface, and Figure 3 is a row of many honeycomb blocks with one side cut into a spherical surface. FIG. 2 is a cross-sectional view of the manufactured honeycomb sand germanchi panel.

Claims (1)

[Claims] 1. A honeycomb sandwich panel characterized in that honeycomb core material is cut into polygonal blocks, one side of which is cut into a spherical or other curved surface, and the honeycomb blocks are arranged to form a curved surface such as a spherical or parabolic surface. Manufacturing method.