A forming and trimming integrated die for thin-walled corrugated plate parts

Abstract

This utility model discloses an integrated forming and trimming mold for thin-walled corrugated sheet parts. The mold body includes a mold body with a machining surface for hydraulically forming rubber bladder parts. This machining surface has corrugated features corresponding to the thin-walled corrugated sheet parts. A trimming groove is formed vertically inward from the machining surface on the mold body, and this groove is continuously arranged corresponding to the outer edge contour of the thin-walled corrugated sheet parts. In this technical solution, the corrugated features and trimming groove on the integrated forming and trimming mold allow for two-step forming and trimming of thin-walled sheet metal on the same mold, achieving precise and rapid bending and trimming of components. Compared to traditional mold forming methods that rely on manual shearing, this method requires significantly less work for shape correction, improves forming efficiency, and saves on mold costs. This mold is suitable for mass production of parts, reducing manufacturing costs.

Description

Technical Field

[0001] This utility model relates to the field of aerospace parts manufacturing technology, specifically to an integrated mold for forming and trimming thin-walled corrugated plate parts. Background Technology

[0002] In aerospace manufacturing technology, thin-walled corrugated plate parts are important reinforcing structural components on aircraft. They are made from thin sheet materials through milling, hydroforming, and edge trimming processes. They possess advantages such as light weight, good surface quality, high structural accuracy, good rigidity, and high strength, and have been widely used in aerospace structural components. However, due to the characteristics of thin-walled corrugated plate parts, such as reinforcing dimples, susceptibility to wrinkling, torsional deformation, and complex structure, their manufacturing process is relatively complex.

[0003] Currently, there are methods that use traditional forming molds to shape parts and manually remove excess material. However, direct hydroforming, due to the thinness of the part material, easily causes fluctuations and wrinkles on the edges of reinforcing ribs, making shaping difficult and severely affecting the flatness of the formed part. Traditional manual removal of excess material often results in fluctuations at the cut edges due to uneven stress in the sheet metal shears, requiring extensive manual shaping afterward, which is difficult given the thinness of the part. Furthermore, traditional machining methods for removing excess material are costly and require specialized tooling and fixtures.

[0004] Rubber bladder hydroforming is a relatively new forming process. While thin-walled corrugated plate parts formed using this method have good surface quality and require minimal manual correction, a small amount of excess material still needs to be manually trimmed from the edges after forming, and manual reshaping is required. The aforementioned problems have not been effectively solved. Utility Model Content

[0005] The main purpose of this utility model is to propose an integrated forming and trimming mold for thin-walled corrugated plate parts, which aims to solve the technical problem that the edges are prone to fluctuation when removing excess material from thin-walled corrugated plate parts after rubber bladder hydroforming, making it difficult to straighten them.

[0006] To achieve the above objectives, this utility model provides an integrated forming and trimming mold for thin-walled corrugated plate parts, which includes a mold body. The mold body is provided with a processing surface for hydroforming of the parts, and the processing surface has corrugated features corresponding to the thin-walled corrugated plate parts.

[0007] The mold body has a cutting groove perpendicularly inward from the processing surface, and the cutting groove is continuously arranged to correspond to the outer edge contour of the thin-walled corrugated plate type part.

[0008] Optionally, the width of the cutting groove is 8~10mm.

[0009] Optionally, the cutting groove is square or annular.

[0010] Optionally, the cutting groove is filled with a filler.

[0011] Optionally, the filler is plaster.

[0012] Optionally, the mold body is provided with a plurality of draw beads located on the processing surface for drawing the material during the blank forming process.

[0013] Optionally, the drawbead is disposed around the periphery of the cutting groove.

[0014] Optionally, the mold body is made of steel.

[0015] Optionally, a rubber sheet is also included for covering the formed fabric to remove excess material from the formed fabric.

[0016] Optionally, the hydroforming is rubber bladder hydroforming.

[0017] In the technical solution of this utility model, the thin-walled sheet is formed and trimmed in two steps on the same mold by means of the corrugated features and trimming grooves on the integrated forming and trimming mold. This achieves precise and rapid bending and trimming of the component. Compared with the traditional mold forming part shape and manual shearing of allowance, the amount of shaping work is very small, the forming efficiency is improved, and the mold cost is saved. This mold is suitable for the mass production of parts and reduces the manufacturing cost of parts. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 A three-dimensional structural diagram of an embodiment of the integrated forming and trimming mold for thin-walled corrugated plate parts provided by this utility model;

[0020] Figure 2 for Figure 1 Usage status diagram;

[0021] Figure 3 A perspective structural diagram of an embodiment of the thin-walled corrugated plate part provided by this utility model.

[0022] In the figure: forming and trimming integrated mold-100, mold body-101, machined surface-101a, corrugated feature-101b, trimming groove-102, draw bead-103, unfolded material-104, thin-walled corrugated plate type parts-200.

[0023] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] To better describe and illustrate the embodiments of this application, reference may be made to one or more accompanying drawings, but the additional details or examples used to describe the drawings should not be considered as limiting the scope of any of the utility model creation, the embodiments or preferred embodiments of this application, or the preferred methods described herein.

[0026] In the description of this utility model, it should be noted that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate that the device referred to must have a specific orientation or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0028] Thin-walled corrugated sheet metal parts are an important type of reinforcing structural component in aircraft. (Please refer to...) Figure 3 , Figure 3 An embodiment of the thin-walled corrugated plate type part provided by this utility model.

[0029] Currently, rubber bladder hydroforming is a relatively new forming process. While it produces thin-walled corrugated plate parts with good surface quality and requires minimal manual correction, a small amount of excess material at the edges still needs to be manually trimmed and manually shaped after forming.

[0030] In view of this, the present invention provides an integrated forming and trimming mold for thin-walled corrugated plate parts. Figure 1-2 For an embodiment of the forming and trimming integrated mold provided by this utility model, please refer to [link / reference]. Figure 1 and 2 The forming and trimming integrated mold 100 includes a mold body 101.

[0031] Specifically, the mold body 101 is a rectangular steel structure, with its upper surface being a machined surface 101a for hydroforming of parts, mainly used to fit the rubber bladder during hydroforming. A corrugated feature 101b is provided in the middle of this machined surface 101a, corresponding to the corrugated profile of thin-walled corrugated plate parts. In this embodiment, the corrugated feature 101b is a recessed groove from the machined surface 101a; of course, it can also be a protrusion from the machined surface 101a.

[0032] The mold body 101 has a cutting groove 102 vertically inwardly formed on its processing surface 101a. The cutting groove 102 is continuously provided to correspond to the outer edge contour of the thin-walled corrugated plate-like part and is used to remove excess material. Of course, the cutting groove 102 needs to be closed during the forming process.

[0033] During hydroforming, the blank is first milled into a unfolded material 104 according to its unfolded shape and size. Then, the cutting groove 102 is filled with plaster. The unfolded material is then positioned on the mold body 101 according to its shape and placed on a rubber bladder hydraulic press. The hydraulic parameters (pressure value, holding time, etc.) are set to perform hydroforming and form the basic structure of the corrugated plate.

[0034] During the trimming process, the pre-formed corrugated plate basic structure is removed from the mold body 101, the filler in the trimming groove 102 is cleaned, the pre-formed corrugated plate basic structure is placed on the mold body 101, a rubber plate is covered on the pre-formed corrugated plate basic structure, and the excess material is removed along the trimming groove 102 using milling cutters or other tools. After trimming, the parts are disassembled to obtain the final corrugated plate part 200.

[0035] In this technical solution, the thin-walled sheet metal is formed and trimmed in two steps on the same mold by means of the corrugated features and trimming grooves on the forming and trimming integrated mold 100. This achieves precise and rapid bending and trimming of the component. Compared with the traditional method of forming the shape of the part by mold and manually cutting the allowance, the amount of shaping work is much less, the forming efficiency is improved, and the mold cost is saved. This mold is suitable for the mass production of parts and reduces the manufacturing cost of parts.

[0036] Preferably, in one embodiment of this utility model, the width of the cutting groove 102 is 8~10mm, which can be set according to the specific structure of the product and the thickness of the material. Similarly, the overall shape of the cutting groove 102 is square or annular, which can be set according to the specific shape of the product.

[0037] As a preferred embodiment of the present invention, the filler of the cutting groove 102 can be selected from various materials. In this embodiment, gypsum is preferred, but hard rubber and other materials that are not easily deformed can also be selected, and the material must also meet the requirement of being easy to clean.

[0038] To ensure the fabric can fully stretch during forming, please refer to [link / reference needed]. Figure 1 and 2 In one embodiment of this utility model, the mold body 101 is provided with a plurality of draw ribs 103, each draw rib 103 being located on the processing surface 101a and protruding outward. During the forming process of the part, the material is bent and formed under tension. The draw ribs 103 can lock the material as much as possible to restrict the flow of the material and draw the material to ensure that the material is fully extended in the strain direction, which can also reduce the occurrence of edge wrinkling.

[0039] It should be understood that the drawbead 103 will compress the blank and cause deformation. Therefore, the drawbead 103 should be provided on the periphery of the trimming groove 102, that is, corresponding to the allowance of the part.

[0040] To facilitate the trimming of the formed blank, in one embodiment of this utility model, a rubber sheet is covered on the formed blank. The rubber sheet is preferably a polyurethane rubber sheet, which is relatively soft and will not damage the parts. It can basically fit with the unfolded blank by its own weight, and then the edge excess is trimmed, which can effectively protect the parts and prevent them from being scratched.

[0041] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A mold for forming and trimming thin-walled corrugated plate-like parts in one piece, characterized in that, Includes a mold body (101), the mold body (101) having a machining surface (101a) for a rubber bladder hydroforming part, the machining surface (101a) having a corrugated feature (101b) corresponding to a thin-walled corrugated plate type part. The mold body (101) has a cutting groove (102) vertically inward from the processing surface (101a), and the cutting groove (102) is continuously arranged corresponding to the outer edge contour of the thin-walled corrugated plate type part; The mold body (101) is provided with a plurality of draw beads (103) located on the processing surface (101a). Each draw bead (103) is located on the processing surface (101a) and protrudes outward. During the forming process of the part, the material is bent and formed in a stretched state. The draw beads (103) can lock the material as much as possible to restrict the flow of the material and draw the material.

2. The forming and trimming mold for thin-walled corrugated plate parts according to claim 1, characterized in that, The width of the cutting groove (102) is 8~10mm.

3. The forming and trimming mold for thin-walled corrugated plate parts according to claim 1, characterized in that, The cutting groove (102) is square or annular.

4. The forming and trimming mold for thin-walled corrugated plate parts according to claim 1, characterized in that, The cutting groove (102) is filled with a filler.

5. The forming and trimming mold for thin-walled corrugated plate parts according to claim 4, characterized in that, The filler is plaster.

6. The forming and trimming mold for thin-walled corrugated plate parts according to claim 1, characterized in that, The drawbar (103) is located around the edge of the cutting groove (102).

7. The forming and trimming mold for thin-walled corrugated plate parts according to claim 1, characterized in that, The mold body (101) is made of steel.

8. The forming and trimming mold for thin-walled corrugated plate parts according to claim 1, characterized in that, It also includes a rubber sheet, which is used to cover the formed fabric to remove excess material.

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