JPS6334015B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a method for manufacturing a sandwich panel having a curved surface using a skin material and a honeycomb core, and an object of the present invention is to manufacture a panel with high dimensional accuracy and high rigidity using a particularly easy method. This is what I did.

Conventional methods involve bending honeycomb cores with rolls or cutting them into small strips, which are then lined up to produce curved panels. For this reason, when the thickness of the honeycomb core becomes large, the honeycomb core buckles or breaks, making it difficult to bend into a curved surface, so the honeycomb core has to be cut into smaller shapes and assembled. For this reason, there are many seams between the honeycomb cores, and gaps are created between the honeycomb cores, resulting in problems in terms of strength and failure to obtain specified dimensional accuracy.

The present invention aims to solve these drawbacks, and embodiments thereof will be described in detail with reference to the drawings.

FIG. 1 is a perspective view of an aluminum honeycomb block 1 in which a sheet-like aluminum honeycomb core is cut into a hexagonal shape and grid-like cuts 3 are made on one side of the honeycomb core. In FIG. 1, the detailed honeycomb shape of the honeycomb block 1 is omitted.

FIG. 2 is a cross-sectional view of a sandwich panel in which a large number of aluminum honeycomb blocks 1 having lattice-like cuts are arranged and a skin material 2 made of CERP or the like is adhered to both sides to form a curved structure.

In order to manufacture aluminum honeycomb cores into blocks with this shape, it is easier to produce blocks with excellent dimensional accuracy and uniform shapes by using electric discharge machining rather than conventional machining. Can be done at the same time.

The thickness of the aluminum honeycomb core is determined based on the shape of the curved surface and the necessary design conditions, and by selecting the appropriate cut interval and depth and bending the honeycomb core, even thick honeycomb cores can easily conform to the curved surface. can.

The shape of the honeycomb block may be either triangular or square, but a hexagonal shape is superior in terms of strength because the joints are not in a straight line.

A panel having a sanderch structure manufactured by such a method has the advantage of having excellent mirror surface precision, being lightweight, and having high rigidity. Therefore, it is applicable to large antennas, etc.

[Brief explanation of the drawing]

1 and 2 show an embodiment of the present invention, FIG. 1 is a schematic perspective view of a honeycomb block with lattice-shaped cuts, and FIG. 2 shows a honeycomb block with many lattice-shaped cuts. FIG. 2 is a cross-sectional view of a curved sanderch panel manufactured by arranging and bonding skin materials to both sides. In the figure, numeral 1 is a honeycomb block, 2 is a skin material, and 3 is a notch. Note that the same or corresponding parts in the figures are denoted by the same reference numerals.

Claims (1)

[Claims] 1. A honeycomb core material is cut into blocks of a certain shape, a large number of the honeycomb blocks are lined up with grid-like cuts, and a skin material is adhered to the blocks to form a curved surface. A manufacturing method for honeycomb sand germanchi panels. 2. The method for manufacturing a honeycomb sanderboard panel according to claim 1, wherein the honeycomb block has a hexagonal shape.