Method for simultaneously paving different composite parts

Abstract

The invention relates to a method for simultaneously paving different composite parts, and belongs to the field of composite manufacturing. A method for simultaneously paving different parts of a composite material comprises the following steps: (1) selecting two or more parts as paving objects; (2) unfolding each part to obtain two-dimensional structures of different parts; (3) combining different parts into an integral structural part; (4) the whole structural part is subjected to layering design according to the corresponding layering sequence, and a complete part is obtained; (5) paving and manufacturing the parts on the flat plate by adopting the paving layer information of the integral structural parts to obtain an integral prefabricated body; (6) cutting the boundary of the whole prefabricated body according to a single part to obtain a corresponding part prefabricated body; and (7) transferring the paved part prefabricated body to a part mold for positioning and curing molding. The method has the following advantages that the material waste rate is reduced, and the paving efficiency is improved; and process production scheduling and capacity allocation are facilitated.

Description

Technical Field

[0001] The present invention relates to a method for simultaneously laying different parts of a composite material, belonging to the field of composite material manufacturing. Background Art

[0002] A typical method for manufacturing composite materials is to lay prepreg materials layer by layer on the surface of a forming mold according to the designed lay-up angles of the parts. Finally, the preform is cured to obtain a part with the same shape as the mold. In this laying process, the parts are highly correlated with the mold and one-to-one corresponding. Only one part can be laid on one mold, and the operation in terms of time and space in this process is greatly restricted. It is impossible to simultaneously and batch lay the same or different parts, which is not conducive to saving materials and laying time. Generally speaking, there are deficiencies in this manufacturing mode:

[0003] (1) The laying process can only be carried out on the tooling, and this process always occupies the mold, resulting in a great relationship between the part manufacturing efficiency and the number of molds, causing a resource bottleneck at this process node, invisibly increasing the manufacturing cost and reducing the manufacturing efficiency.

[0004] (2) Different parts can only be laid separately during manufacturing, and no synergy can be generated, and the utilization rate of laying materials and the laying efficiency are not high.

[0005] (3) The occupation of the mold by laying restricts the application of new technologies such as automation in terms of time and space. If the parts are very small, the value of using automated manufacturing is not high. If multiple parts can be manufactured simultaneously, automated manufacturing can be better utilized. Summary of the Invention

[0006] The purpose of the present invention is to provide a method for simultaneously laying different parts of a composite material. By decomposing the lay-ups of different parts, the combination of parts and the recombination of lay-ups are realized. Finally, the simultaneous laying of different parts is achieved, changing the traditional composite material manufacturing mode, greatly improving the material utilization rate and manufacturing efficiency of parts, and reducing the manufacturing cost at the same time.

[0007] In order to achieve the above purpose, the present invention adopts the following technical scheme: A method for simultaneously laying different parts of a composite material, comprising the following steps:

[0008] (1) Select two or more parts as the laying objects;

[0009] (2) Unfold each part to obtain the two-dimensional structures of different parts;

[0010] (3) Combine different parts into an integral structural part;

[0011] (4) Design the lay-up of the integral structural part according to the corresponding lay-up sequence to obtain a complete part;

[0012] (5) The laying information of the integral structure parts is used to lay and manufacture the parts on a flat plate to obtain an integral preform;

[0013] (6) The integral preform is cut according to the boundaries of individual parts to obtain corresponding part preforms;

[0014] (7) The laid part preforms are transferred to a part mold for positioning and curing and forming.

[0015] Preferably, in step (1), the parts have the same structure.

[0016] Preferably, in step (1), the parts have different structures.

[0017] Preferably, in step (1), the outer shapes and layups of the parts are different.

[0018] Preferably, in step (3), the two-dimensional structural outer shapes of two or more parts are combined, and the internal same-angle ladder layers are moved to the same-angle layup positions to form an integral multi-layup structure part.

[0019] Preferably, in step (4), according to the layup sequence, the layup setting of the integral structure part is completed, the same layups in the connection area are merged into an integral layup, and the layups in other different areas are set as strengthening layers.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] 1. Using this method, one-time integral laying of two or more parts with different or the same structures can be achieved, reducing the material waste rate and improving the laying efficiency;

[0022] 2. This method can achieve the separation of laying and the mold, reducing the restrictions of the mold on laying in terms of time and space, and being beneficial to process scheduling and production capacity allocation;

[0023] 3. This method is beneficial to the application of automated manufacturing. Description of the Drawings

[0024] Figure 1 is the two-dimensional developed view of the structure of Part 1 in the embodiment of the present invention;

[0025] Figure 2 is the two-dimensional developed view of the structure of Part 2 in the embodiment of the present invention;

[0026] Figure 3 is the two-dimensional developed view of the structure of Part 1 + Part 2 in the embodiment of the present invention. Detailed Embodiments

[0027] The following combines the attached Figures 1-3The present invention will be further described in detail: A method for simultaneously laying different parts of a composite material, comprising the following steps:

[0028] (1) Select two (or more) parts with different structures, which can have different shapes and layups, as the laying objects;

[0029] (2) Expand the two (or more) parts into a plane to obtain two (or more) two-dimensional structures as Figures 1-2 shown;

[0030] (3) Combine the outer shapes of the two (or more) two-dimensional structures of the parts, and move the internal layers relative to each other to form an integral structure part with multiple layups, as Figure 3 shown;

[0031] (4) Complete the layup setting of the overall structure according to the layup sequence. The same layups in the connection area can be combined into an integral layup, and the layups in other different areas are set as strengthening layers, as Figure 3 shown;

[0032] (5) Carry out the laying of the parts according to the layup of the overall structure part (as Figure 3 shown) to obtain an overall preform;

[0033] (6) After completion, cut out different independent part preforms according to the boundaries of different parts;

[0034] (7) Finally, transfer the different part preforms to the corresponding molds for curing and forming to obtain the final different independent parts.

[0035] Specifically,

[0036] As Figure 1 shown, it mainly includes the two-dimensional expansion diagram and layup information [45 / -45 / 0 / 90]s of part one structure, where the layup information in area ① is [45 / -45 / 0 / 90 / 90 / 0 / -45 / 45], the layup information in area ② is [45 / -45 / 90 / 90 / 0 / -45 / 45], the layup information in area ③ is [45 / -45 / 90 / 0 / -45 / 45], the layup information in area ④ is [45 / -45 / 0 / -45 / 45], and the layup information in area ⑤ is [45 / -45 / -45 / 45];

[0037] As Figure 2As shown, the 2D developed drawing of Part 2 and the ply information is [45 / -45 / 0 / 45 / -45 / 90]s. Among them, the ply information in Area ⑥ is [45 / -45 / 0 / 45 / -45 / 90 / 90 / -45 / 45 / 0 / -45 / 45], the ply information in Area ⑦ is [45 / -45 / 45 / -45 / 90 / 90 / -45 / 45 / -45 / 45], the ply information in Area ⑧ is [45 / -45 / -45 / 90 / 90 / -45 / -45 / 45], the ply information in Area ⑨ is [45 / -45 / 90 / 90 / -45 / 45], and the ply information in Area ⑩ is [45 / -45-45 / 45];

[0038] As Figure 3 shown, the 2D developed drawing of Part 1 + Part 2 and the ply information is [45 / -45 / 0 / 45 / -45 / 90]s, where the ply information is [45 / -45 / 0 / 90 / 90 / 0 / -45 / 45], the area ply information is [45 / -45 / 90 / 90 / 0 / -45 / 45], the area ply information is [45 / -45 / 90 / 0 / -45 / 45], the area ply information is [45 / -45 / 0 / -45 / 45], the area ply information is [45 / -45 / -45 / 45], the area ply information is [45 / -45 / 90 / 90 / -45 / 45], the area ply information is [45 / -45 / -45 / 90 / 90 / -45 / -45 / 45], the area ply information is [45 / -45 / 45 / -45 / 90 / 90 / -45 / 45 / -45 / 45], the area ply information is [45 / -45 / 0 / 45 / -45 / 90 / 90 / -45 / 45 / 0 / -45 / 45].

Claims

1. A method for simultaneously paving different parts of a composite material, characterized in that: The following steps are involved: (1) Select two or more parts as the paving objects; (2) Expand each part to obtain the two-dimensional structure of different parts; (3) Combine different parts into an integral structural part; (4) Design the layup of the overall structural parts according to the corresponding layup sequence to obtain a complete part; (5) Using the ply information of the overall structural parts to perform part laying and manufacturing on a flat plate to obtain an overall preform; (6) Cutting the whole preform according to the boundaries of individual parts to obtain corresponding part preforms; (7) Transfer the laid-out part preform to the part mold for positioning and curing.

2. The method for simultaneously paving different parts of composite materials according to claim 1, characterized in that: The method comprises the following steps: In step (1), the parts have the same structure.

3. The method for simultaneously paving different parts of composite materials according to claim 1, characterized in that: The method comprises the following steps: In step (1), the parts have different structures.

4. The method for simultaneously paving different parts of composite materials according to claim 1, characterized in that: The method comprises the following steps: In step (1), the part shape and the layup are different.

5. The method for simultaneously paving different parts of composite materials according to claim 1, characterized in that: The method comprises the following steps: in step (3), two or more two-dimensional structural shapes of parts are combined, and the internal ladder layers with the same angle are moved to the same angle laying position to form a multi-layer integral structural part.

6. The method for simultaneously paving different parts of composite materials according to claim 1, characterized in that: The method comprises the following steps: in step (4), the ply setting of the overall structural parts is completed according to the ply sequence, the plies with the same structure in the connection area are combined into an overall ply, and the plies in other different areas are set as reinforcement layers.

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