JP2891314B2 - Honeycomb panel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a honeycomb panel made of a metal such as stainless steel or titanium. The honeycomb panel includes a honeycomb core sandwiched between a pair of face sheets on upper and lower surfaces. Usually honeycomb core is corrugated cross section, they are joined by gluing or welding or the like to the face sheets. The honeycomb panel having such a structure is very light and has excellent strength. This type of honeycomb panel is used for aircraft, ships, vehicles, and the like.

[0002]

2. Description of the Related Art A honeycomb structure having a large area is manufactured by joining honeycomb panels to each other. FIG.
It is an example of the joining method described in 2-238072. FIG.
The face sheets 2a, 2b and 2a ', 2b' have poor dimensional accuracy and are thin because the distortion is likely to occur when the honeycomb core 3 is joined. When 2a and 2a 'and 2b and 2b' in FIG. 8A are joined, the honeycomb panel is joined. However, butt welding such as 2a and 2a 'is performed with 2a and 2a'.
This is not easy because the plate thickness such as a 'is thin and the dimensional accuracy is poor.

In FIG. 8 (B), 2a and 2a 'and 2b and 2b' are welded through the insert 4 with the insert 4 having a height larger than the thickness of the honeycomb panel interposed therebetween. However, the method of FIG. 8B has a problem that sufficient bonding strength cannot be obtained as described later in detail, since the bonding of the honeycomb core is not performed and only the face sheet is bonded. In addition, the projecting insert 4 protrudes the joint portion and impairs the appearance. Furthermore, the process of inserting the insert material every time joining is complicated.

[0004]

According to the present invention, a sufficient bonding strength can be ensured, and since there is no swelling at the bonding portion, the surface after bonding is beautiful and welding can be easily performed. And the provision of honeycomb panels.

[0005]

FIG. 1 is an explanatory view of a honeycomb panel according to the present invention. FIG. 1 (A) is an explanatory view of an external appearance, FIG. 1 (B) is an explanatory view of a cross section taken along line II, and FIG. It is explanatory drawing of a visual roll cross section. The present invention relates to a rectangular honeycomb panel 1 having a metal honeycomb core 3 and metal face sheets 2a and 2b disposed on the upper and lower surfaces of the honeycomb core.
At least one side surface crossing the A, metal side plates 5a for bonding to each other (5a ') is arranged, a honeycomb panel.

In FIG. 1, side plates 5a, 5a ',
5b, is an example of 5b 'are arranged, when joining only two honeycomb panels mutually can side plate Hanikamuko
May be arranged only on one side crossing the a . Also, the side plate has shown an example of an L-shaped side plate in cross section,
The side plate can use a plate shape or a U-shaped cross section,
As will be described later in detail, those having a concave cross-sectional shape or a convex cross-sectional shape can also be used.

In FIG. 1, reference numeral 6 denotes a joint between the face sheet 2 and the honeycomb core 3, and the honeycomb core 3 is joined to the face sheets 2a and 2b by laser beam welding. In the figure, one spot is welded, but one spot, two spots, and three spots are determined according to the required strength of the honeycomb panel . Also figure 7 is at the junction of the face sheet and the side plate, the side plate 5a, etc., conventional welding or Rezabi
It is joined to the face sheets 2a and 2b by, for example, rubber welding .

In FIG. 1, side plates 5 a and 5 a ′ are side plates arranged along the end face of the honeycomb core 3 having a waveform. Fig. 1 (D)
FIG. 4 is an explanatory diagram of a joint portion between a side plate 5 a and a corrugated end face of the honeycomb core 3. In the honeycomb panel of the present invention, the corrugated end face of the honeycomb core 3 and the inner face of the side plate 5a are joined by laser beam welding.

[0009]

FIG. 2 is an explanatory view of the joining of the honeycomb panels 1 and 1 'of the present invention. When the honeycomb panels 1 and 1 'are joined in the present invention, the face sheets 2a and 2a' and 2
In addition to the joining of b and 2b ', the side plates 5C and 5C' can be further joined. Since the face sheet is thin, the joining strength tends to be insufficient only by joining the face sheets together. In the present invention, since the side plates 5C and 5C 'are further joined, a large joining strength can be obtained. Further, this method does not use the insert material 4 shown in FIG. 8 having a height larger than the thickness of the honeycomb panel, so that a beautiful joint can be obtained without a swelling of the joint.

As described with reference to FIG. 1D , in FIG. 2 of the present invention, the corrugated end of the honeycomb core 3 and the side plate 5C are joined by welding. Reference numeral 8 in FIG. 2 denotes this joint . Therefore, the side plate 5C receives all the rigidity and strength of the honeycomb core 3. Similarly, the end and side of the waveform of the honeycomb core 3 '
Since the plate 5C 'is joined at the weld 8', the side plate 5C '
Has all the rigidity and strength of the honeycomb core 3 '. Therefore, when the side plate 5C and the side plate 5C 'are welded, the rigidity and strength of the honeycomb cores 3 and 3' are all received by the joint, and the rigidity and strength do not deteriorate at the joint. Therefore, the honeycomb structure in which the honeycomb panels of the present invention are joined to each other has the same rigidity and strength as a seamless long honeycomb panel.

FIG. 3 is an explanatory view of a honeycomb panel having an L-shaped side plate 5d. For example, when the end portions of the honeycomb panels 1 and 1 ′ are placed on the cross beams 9 and the honeycomb panels 1 and 1 ′ are joined, welding is difficult because of the honeycomb core of the conventional honeycomb panel. In the present invention, the L-shaped side plate 5 is used.
d and 5d ', the flanges of the side plates 5d and 5d' and the transverse beam 9 are welded and joined 10 using the honeycomb panels 1 and 1 'having the same.
And 10 'can be formed and easily joined. Incidentally, reference numeral 11 in the figure denotes a lid for providing a surface without a depression, which can be used by being joined to the face sheets 2a and 2a '.

[0012] Figure 4 is Ru illustration der honeycomb panels having a side plate of the U-shape. In this case, the face sheets 2a and 2
a 'and 2b and 2b', in addition to the side plates 5e and 5b
e ′ can be joined to each other by welding 10-1 and 10-2. For this reason, a larger bonding strength can be obtained than in the conventional case where only the face sheets are bonded together. Further, the side plates 5e and 9 and the side plates 5e 'and 9 are joined by sandwiching the cross beam 9, so that a strong joining strength can be obtained. Also, for the same reason as described with reference to FIG. 2, the joint of this method is also beautiful without swelling.

FIG. 5 shows that the side plate has a concave cross-sectional shape which fits into the convex cross-sectional shape of the side plate of another honeycomb panel to be joined or the concave cross-sectional shape of the side plate of another honeycomb panel to be joined. in illustration of honeycomb panels having a side plate of the lateral projection of the cross-sectional shape, there illustration of fitting together of that.

[0014] Although an example in which the combined fitting in Figure 5, may be welded to side plate 5f and 5g optionally after combined fitting. The honeycomb panel having the side plates of FIG. 5 can be easily joined by fitting, and can be firmly joined by using fitting and welding together.
Note that the honeycomb panel of FIG. 5 can also provide a beautiful joint without a swelling of the joint.

[0015]

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below are for explaining the present invention in principle and, of course, do not have a meaning to limit the present invention.

The honeycomb core 3 constituting the honeycomb panel used in the embodiment is made of stainless steel and has a thickness of 300 μm as shown in FIG. 6A, and is a corrugated plate having a continuous trapezoidal shape. 35 mm, the height of the wave is 40 mm, the surface in contact with the face sheet corresponds to the bottom of the trapezoid, and has a width of 5 mm. The side plate 5 is made of an L-shaped stainless steel as shown in FIG. 1 and has a height and width of 40 mm, a length of 300 mm, and a thickness of 5 mm, and the surface joined to the end face of the honeycomb core (corrugated plate) has a wave. It has a corrugated groove of the same shape as the plate, 0.5 mm wide and 1 mm deep.

FIG. 6B and FIG. 7 show the corrugated plate 3 and the corrugated shape horizontally.
It is explanatory drawing of the joining of the side plate 5 to cut . As shown in FIGS. 6B and 7, the corrugated plate 3 and the side plate 5 are joined by fitting the end of the corrugated honeycomb core into the groove previously provided in the side plate 5 and containing nickel powder, as shown in FIGS. The welding laser beam L was irradiated using the paste to be applied. The laser was performed transmission welding the beam at the optical fiber LF to the laser welding head LH using YAG laser of continuous wave oscillation, the processing conditions at this time output 240 W, were processed per minute for 1 m. This step of joining the corrugated plate and the side plate was performed on all sides of the honeycomb panel .

Thereafter, as shown in FIG. 6C, the face sheet 2a made of the same material as the honeycomb core 3 is overlapped with the honeycomb core 3, and the face sheet 2 is formed from the honeycomb core side under the condition that there is no welding mark on the face sheet surface. Laser welding,
Next, in FIG. 6D, the other face sheet 2b and the honeycomb core 3 were welded. Side plate and the face sheet 2a, 2
In the joint 7 with b, laser welding was performed from the side of the side plate 5 so that welding marks were not formed on the face sheet surface. The laser welding conditions at this time were 600 W and the processing speed was 1 m per minute, but the joint between the honeycomb core 3 and the face sheet was not enough.
Had been joined in minutes. By this, one side is 300mm
Into a square honeycomb panel.

Using such a honeycomb panel with L-shaped side plates, the side plates 5 of the honeycomb panel are joined to each other by TIG welding, and as shown in FIG. Done.

When a bending test was performed using such a honeycomb panel, a strong honeycomb panel was obtained without breakage of the joint portion or the honeycomb panel. Furthermore, since there were no welding marks on the surface, a honeycomb panel having excellent corrosion resistance could be obtained.

[0021]

The present invention provides a honeycomb panel for manufacturing a honeycomb panel, and a honeycomb panel which can be joined and joined to each other or to another member and has no welding marks on the surface of the honeycomb panel. A conventional honeycomb panel does not have sufficient strength due to its joining, does not have a problem that a raised welding mark is formed on the surface of the honeycomb panel, and a strong honeycomb panel can be obtained by using a joint. . As a result, it has become possible to use a honeycomb panel that is easier to assemble than before.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a honeycomb panel of the present invention, FIG. 2 is an explanatory view of joining of a honeycomb panel of the present invention, FIG. 3 is an explanatory view of joining of a honeycomb panel of the present invention having L-shaped side plates, and FIG. FIG. 5 is an explanatory view of a honeycomb panel of the present invention having a letter-shaped side plate, FIG. 5 is an explanatory view of a honeycomb panel of the present invention having concave and convex side plates, FIG. 6 is an explanatory view of an embodiment, and FIG. 7 is a honeycomb core in the embodiment. FIG. 8 is an explanatory view of a joining method of a honeycomb panel and a side plate, and FIG. 8 is an explanatory view of a known joining method of a honeycomb panel.

[Explanation of symbols]

1 (1 '): honeycomb panel, 2 (2a, 2b): face sheet, 3: honeycomb core, 4: insert material,
5 (5a, 5b, 5c, 5d, 5f, 5g): side plate,
6: weld, 7: weld, 8: weld, 9: cross beam, 10 (10 ', 10-1, 10-2): weld joint,
11: Lid.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Mamoru Takeda 2-6-3 Otemachi, Chiyoda-ku, Tokyo Inside Nippon Steel Corporation (72) Inventor Atsushi Sugihashi 5-10-1 Fuchinobe, Sagamihara City, Kanagawa Prefecture (72) Inventor Akira Ishibashi 4-1-36-201 Namiki, Sagamihara City, Kanagawa Prefecture (56) References JP-A 2-155638 (JP, A) JP-A-61-141541 (JP, A) JP-A-58-128840 (JP, A) JP-A-58-102751 (JP, A) Japanese Utility Model Application No. 58-81244 (JP, U) Japanese Utility Model Application No. 58-186043 (JP, U) JP-A-41-18284 (JP, Y1) JUN 37-8861 (JP, Y1)

Claims (2)

(57) [Claims] 1. A honeycomb panel of gon a metal face sheet disposed on the crest direction upper and lower surfaces of the honeycomb core and the honeycomb core of the wave-shaped cross section made of metal is welded by a laser beam , the grooving along the shape of the waveform is previously decorated with metal plates of the honeycomb core
The end of the honeycomb core is fitted into the groove , the fitting portion is filled with a paste containing metal powder as a main component, and the side plate and the honeycomb core and the face sheet are welded and joined by a laser beam. A honeycomb panel characterized by the following. 2. The side plate according to claim 1, wherein the side plate has an L-shaped or U-shaped cross section and the height thereof is equal to the height of the honeycomb core in the wave height direction. Honeycomb panel.