Perforating tool for aramid paper honeycomb

Abstract

The utility model discloses a tapping tool for aramid paper honeycombs, which comprises a cutter body, the cutter body is of a bottomless hollow structure, and the bottom edge of the cutter body is a cutting edge; a knocking plate is arranged above the cutter body, the knocking plate is fixed above the cutter body, through holes are formed in the top of the knocking plate and the top of the cutter body, and the positions of the two through holes are opposite. The matched cutter body is manufactured according to the size and the thickness of a hole needing to be cut, is not influenced by a honeycomb shape and is suitable for various molded surfaces; the cutting edge at the bottom of the cutter body is used for forming holes in the aramid paper honeycomb board, honeycomb notches are neat, and the position precision and the notch precision are controllable.

Description

Technical Field

[0001] The utility model relates to the technical field of composite material hole opening, and particularly relates to a hole opening tool for aramid paper honeycomb. Background Art

[0002] The most commonly used composite material on modern airplanes is aramid paper honeycomb, and a panel covering the honeycomb is made of composite materials such as carbon fiber reinforced resin, and is used for airplane floors, cabin doors, interior parts, tail wings, control surfaces, fairings, propeller blades, etc., and is also used for the inner walls, ceilings, luggage racks, etc. of high-speed trains.

[0003] Aramid paper honeycomb, as the name implies, this honeycomb is made of a special paper - aramid fiber paper. At present, the maximum single-piece size of conventional aramid paper honeycomb is 2400*1500mm. When used for large sandwich parts, multiple pieces of honeycomb need to be continuously spliced. Since aramid paper honeycomb has a certain flexibility and the paper honeycomb is prone to deformation when subjected to lateral force, when multiple pieces of honeycomb are spliced and used, it is impossible to pre-process and open holes in the honeycomb by means of CNC machining in advance. And when using CNC machining to open holes in the aramid paper honeycomb after splicing, problems such as chip inclusion will occur, and the CNC machining cycle is too long, the paper honeycomb is prone to moisture absorption problems, and the processing cost is high. However, when manually cutting aramid paper honeycomb, the flatness of the cut cannot be guaranteed, and the regularity of the shape is also lacking, resulting in low quality of aramid paper honeycomb hole opening. Summary of the Utility Model

[0004] In order to solve the above problems, the utility model provides a hole opening tool for aramid paper honeycomb, which can quickly complete the hole opening operation and ensure the flatness of the cut of the honeycomb hole opening.

[0005] Therefore, the technical solution of the utility model is: a hole opening tool for aramid paper honeycomb, including a tool body, the tool body is a bottomless hollow structure, and the bottom edge of the tool body is a cutting edge; a knocking plate is arranged above the tool body, the knocking plate is fixed above the tool body, and through holes are arranged through the knocking plate and the top of the tool body, and the positions of the two through holes are opposite.

[0006] On the basis of the above solution and as the preferred solution of the above solution: it further includes a demolding push rod, and the demolding push rod sequentially passes through the first through hole on the knocking plate and the second through hole on the tool body and extends into the tool body.

[0007] On the basis of the above solution and as the preferred solution of the above solution: multiple edges at the bottom of the tool body are all inclined and sharp cutting edges, and each cutting edge encloses an opening area.

[0008] On the basis of the above solution and as the preferred solution of the above solution: the tool body is a bottomless hollow cuboid, a bottomless hollow cylinder or a bottomless hollow prism structure.

[0009] Based on the above solution and as an optimized solution of the above solution: The tool body is made of stainless steel plate with a thickness of 1.0 - 2.0 mm.

[0010] Based on the above solution and as an optimized solution of the above solution: The knocking plate is fixed on the top of the tool body through the support rods, and the support rods are evenly distributed.

[0011] During use, place the cutting edge of the tool body at the position on the aramid paper honeycomb board where a hole needs to be opened, and then repeatedly strike it with a rubber hammer. The tool body inserts into the aramid paper honeycomb board through the sharp cutting edge to open a hole in the aramid paper honeycomb board. After opening the hole, take out the tool body, insert the demolding push rod successively through the first through-hole on the knocking plate and the second through-hole on the tool body, and extend it into the interior of the tool body to push out the cut honeycomb block, completing the hole-opening operation on the aramid paper honeycomb board.

[0012] Compared with the prior art, the beneficial effects of the present utility model are: A tool body matching the size and thickness of the hole to be cut is made according to requirements, which is not affected by the honeycomb shape and is applicable to various profiles. At the same time, the tool body is convenient to customize, has a mature manufacturing process, low cost and short cycle, and is convenient to use; The cutting edge at the bottom of the tool body is used to open a hole in the aramid paper honeycomb board, and the honeycomb cut is neat, and the position accuracy and cut accuracy are controllable. Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of Embodiment 1;

[0014] Figure 2 It is a schematic structural diagram of the tool body of Embodiment 1;

[0015] Figure 3 It is a structural sectional view of Embodiment 1;

[0016] Figures 4 to 7 It is a hole-opening flow chart of Embodiment 1;

[0017] Figure 8 It is a schematic structural diagram of Embodiment 2;

[0018] Figure 9 It is a schematic structural diagram of the tool body of Embodiment 2.

[0019] The labels in the figure are: tool body 1, cutting edge 11, second through-hole 12, knocking plate 2, first through-hole 21, support rod 3, demolding push rod 4, aramid paper honeycomb board 5, honeycomb block 51, rubber hammer 6, second tool body 7, second cutting edge 71. Detailed Embodiments

[0020] In the description of the present utility model, it should be noted that for orientation terms, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the indicated orientation and positional relationships are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present utility model.

[0021] In addition, such terms as "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meanings of "several" and "a number of" are two or more, unless otherwise specifically defined.

[0022] Embodiment 1

[0023] The hole-opening tool for aramid paper honeycomb described in this embodiment includes a tool body 1, which is made of a stainless steel plate with a thickness of 1.0 - 2.0 mm. A tool body matching the size and thickness of the hole to be cut is made as required. For example, the tool body 1 is a bottomless hollow cuboid structure, and then the bottom edge of the tool body 1 is ground into a sharp cutting edge 11, and the cutting edge is smooth and flat to ensure the flatness of the honeycomb cut. At the same time, the tool body 1 is 20 - 30 mm higher than the thickness of the aramid paper honeycomb to facilitate the tool body 1 to cut the honeycomb board completely.

[0024] A knocking plate 2 is arranged above the tool body 1 and is fixed to the top of the tool body 1 through a support rod 3, and the support rods 3 are evenly distributed. When hitting the knocking plate 2 with a rubber hammer, the force can act on the tool body 1 evenly. Through holes are provided in both the knocking plate 2 and the top of the tool body 1, and the positions of the two through holes are opposite. The demolding push rod 4 passes through the first through hole 21 on the knocking plate 2 and the second through hole 12 on the tool body 1 in sequence and extends into the tool body 1, and can push the honeycomb block out of the tool body.

[0025] During use, place the cutting edge 11 of the tool body 1 at the position on the aramid paper honeycomb board 5 where an opening needs to be made, and then repeatedly strike it with a rubber hammer 6. The tool body 1 inserts into the aramid paper honeycomb board 5 through the sharp cutting edge 11 to make an opening in the aramid paper honeycomb board 5. After the opening is made, take out the tool body 1, insert the demolding push rod 4 successively through the first through hole on the knocking plate 2 and the second through hole on the tool body 1, and extend it into the tool body 1 to push out the cut honeycomb block 51, thus completing the opening operation on the aramid paper honeycomb board.

[0026] Embodiment 2

[0027] This embodiment has the same structure as Embodiment 1, the difference being that: the second tool body 7 in this embodiment is a bottomless hollow cylindrical structure, and the bottom edge forms a circular second cutting edge 71, which can be used to make a circular hole in the aramid paper honeycomb board.

[0028] The above are only the preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. All technical solutions falling within the idea of the present utility model belong to the protection scope of the present utility model. It should be noted that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present utility model should also be regarded as within the protection scope of the present utility model.

Claims

1. An opening tool for aramid paper honeycomb, characterized in that: It includes a tool body. The tool body is a bottomless hollow structure, and the bottom edge of the tool body is a cutting edge. There is a percussion plate above the tool body. The percussion plate is fixed above the tool body, and through holes are provided in both the percussion plate and the top of the tool body, and the positions of the two through holes are opposite.

2. The opening tool for aramid paper honeycomb according to claim 1, characterized in that: It further includes a demolding push rod. The demolding push rod sequentially passes through the first through hole in the percussion plate and the second through hole in the tool body and extends into the interior of the tool body.

3. A hole-opening tool for aramid paper honeycomb as described in claim 1, characterized in that: Multiple edges at the bottom of the tool body are all inclined and sharp cutting edges, and each cutting edge encloses an opening area.

4. The opening tool for aramid paper honeycomb according to claim 1, characterized in that: The tool body is a bottomless hollow cuboid, a bottomless hollow cylinder or a bottomless hollow polygonal prism structure.

5. The punching tool for aramid paper honeycomb according to claim 1, wherein: The tool body is made of a stainless steel plate with a thickness of 1.0 - 2.0 mm.

6. The opening tool for aramid paper honeycomb according to claim 1, characterized in that: The percussion plate is fixed to the top of the tool body through support rods, and each support rod is evenly distributed.

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