Composite mold and method of manufacturing the same

Abstract

The application discloses a composite material mold, comprising: a frame, one side of the frame is provided as a processing curved surface, the curved profile of the processing curved surface matches the profile of a to-be-processed composite material part; a sheet is fixedly laid on the processing curved surface and is attached to the processing curved surface; a plurality of mold plates are arranged and are sequentially laid on the sheet and are connected into a whole, and the mold plates are attached to the sheet. In the embodiment, the sheet is laid on the processing curved surface of the frame and is attached to the processing curved surface of the frame, so that the curved profile of the processing curved surface is not affected and the processing curved surface has certain air tightness. The plurality of mold plates are sequentially laid on the sheet and are attached to the sheet, the plurality of mold plates are connected into a whole, and the plurality of mold plates connected into a whole always have the risk of connection defects, so that the whole mold plate has the risk of air tightness. The processing curved surface on which the sheet is laid has certain air tightness, and the processing curved surface is sufficient for use as a supplement to the connection defects of the mold plates.

Description

Technical Field

[0001] This application relates to the field of composite parts manufacturing, and more particularly to a composite mold and its manufacturing method. Background Technology

[0002] Advanced composite material parts are widely used in aircraft manufacturing due to their advantages such as lightweight, corrosion resistance, and high design flexibility. During the manufacturing process of composite parts, the airtightness of the mold directly affects the molding quality of the composite parts, thus significantly impacting aircraft performance. The manufacturing process of composite molds is influenced by the size and cost of the raw material blanks. The mold templates often require welding to form the curved surfaces of the parts, but welding always carries the risk of welding defects. Summary of the Invention

[0003] The main objective of this application is to provide a composite mold and its manufacturing method, which aims to solve the risk of welding defects in the template of the composite mold during welding.

[0004] To achieve the above objectives, this application provides a composite material mold, the specific technical solution of which is as follows:

[0005] A composite mold includes: a frame, one side of which is configured as a processing surface, the curved contour of which matches the contour of the composite part to be processed; a thin plate, which is fixedly stacked on the processing surface and is in contact with the processing surface; and multiple templates, which are sequentially stacked on the thin plate and connected as a whole, with the templates in contact with the thin plate.

[0006] Optionally, multiple templates are sequentially matched to the processed surface in the width direction, or the templates are connected as a single unit and then matched to the processed surface. This is equivalent to dividing the processed surface into multiple blocks in the length direction. During processing, the templates need to be matched sequentially with the entire width of the processed surface, which makes the template processing more orderly. Processing the entire width at once also means that when splicing templates, only the length direction of the processed surface needs to be spliced; the width direction only needs to be considered in order, making splicing more convenient.

[0007] Optionally, the template has a chamfer at its edge outside the processed curved surface, with the chamfer angle set between 0° and 90°. More preferably, it is 45°. After multiple templates are laid sequentially on the thin plate, they need to be temporarily fixed before being connected as a whole. The chamfer makes temporary fixing more convenient.

[0008] Optionally, the frame includes: a base; and multiple machining sections, each fixedly mounted on the base, with the side of the machining section facing away from the base being a machined curved surface. Disassembling the support components for the machined curved surface into multiple parts makes maintenance and replacement of the machined curved surface easier, preventing situations where a problem in one area necessitates the replacement of the entire surface.

[0009] Optionally, multiple processing units sequentially constitute a processed curved surface with the full width and a preset length, and the multiple processing units together form a complete processed curved surface. By dividing the processed curved surface into multiple blocks along the length direction, when setting the processed curved surface, it is only necessary to set the length of the processed curved surface sequentially, and only the order of the width needs to be considered, making the setting of the processed curved surface more convenient.

[0010] Optionally, the processing section includes: a support section, which is mountain-shaped; and a curved surface adaptation section, the side of the curved surface adaptation section facing away from the support section being the processed curved surface. The support section supports the curved surface adaptation section, and the height of each side of the mountain-shaped support section is set according to the curved surface adaptation section. More preferably, vertical support columns can be added in the middle of the mountain-shaped section. The number and length of the support columns are determined according to the width and contour shape of the processed curved surface. This provides better support for the processed curved surface and avoids the risk of deformation during long-term use.

[0011] Optionally, the base is rectangular, with support columns at each of the four corners. The processing unit is positioned between the support columns, which are used to fix the base and / or to join the bases together in pairs. This allows the composite mold to be adapted to the manufacture of larger parts and to better fix the mold itself, avoiding risks such as displacement during production.

[0012] Optionally, both the sheet metal and the template are made of metal. More preferably, both the sheet metal and the template are made of ordinary carbon steel. The thickness of the sheet metal is 1-5 mm, more preferably 2-3 mm. The thickness of the template is 10-30 mm, more preferably 15-18 mm. This allows the sheet metal and template to provide better airtightness while enabling the use of metal welding technology during the laying process.

[0013] In addition, to achieve the above objectives, this application also provides a method for manufacturing a composite mold, the specific technical solution of which is as follows:

[0014] A method for manufacturing a composite mold, used to manufacture the aforementioned composite mold, includes: a blanking frame for the part to be processed, and setting one side of the frame as a processing curved surface; laying a thin plate on the processing curved surface and fitting the thin plate to the processing curved surface; sequentially laying multiple templates on the thin plate and fitting the multiple templates to the thin plate; and sequentially connecting the multiple templates into a whole.

[0015] Optionally, before sequentially laying multiple templates on the thin plate, each template is individually processed to match the full width of the processed curved surface, and then the multiple templates are connected as a whole to match the processed curved surface. This is equivalent to dividing the processed curved surface into multiple sections along its length. During processing, the templates need to be sequentially matched to the full width of the processed curved surface, making the template processing more orderly. Processing the entire width at once also means that when splicing the templates, only the length direction of the processed curved surface needs to be spliced; the width direction only requires attention to the order, making splicing more convenient.

[0016] The beneficial effects of this application are as follows: This application proposes a composite mold by laying a thin plate on the machined curved surface of the frame and fitting the thin plate to the machined curved surface of the frame. This ensures that the curved contour of the machined curved surface is not affected while also providing a certain degree of airtightness. When multiple templates are sequentially laid on and fitted onto the thin plate, and then connected as a whole, there is always a risk of connection defects, leading to an overall airtightness risk for the template. The machined curved surface with the thin plate provides a certain degree of airtightness, although this airtightness is weak and cannot be used independently, it is sufficient to compensate for connection defects. This solves the risk of connection defects that always exists when multiple templates are connected as a whole, achieving excellent airtightness in the composite mold, and thus eliminating concerns about airtightness testing. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the composite mold of this application;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the composite mold in this application;

[0019] Wherein: 1-frame, 11-base, 12-processing part, 121-support part, 122-curved surface adaptation part, 13-support column, 2-thin plate, 3-template, 31-connecting plate.

[0020] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0022] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0023] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixation," etc., should be interpreted broadly. For example, "fixation" can mean a direct connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0024] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0025] Reference Figure 1 and 2 The first embodiment of this application provides a composite mold, the specific technical solution of which is as follows:

[0026] A composite mold includes: a frame 1, one side of which is configured as a processing curved surface, the curved contour of which matches the contour of the composite part to be processed; a thin plate 2, which is fixedly stacked on the processing curved surface and is in contact with it; and multiple templates 3, which are sequentially stacked on the thin plate 2 and connected as a whole, with the templates 3 in contact with the thin plate 2. In this embodiment, by laying the thin plate 2 on the processing curved surface of the frame 1 and making the thin plate 2 in contact with the processing curved surface of the frame 1, the curved contour of the processing curved surface is not affected, while the processing curved surface also has a certain degree of airtightness. Laying multiple templates 3 sequentially on the thin plate 2 and making them in contact with it, and connecting multiple templates 3 as a whole, always carries the risk of connection defects, leading to an airtightness risk for the overall template 3. While the processing curved surface on which the thin plate 2 is laid has a certain degree of airtightness, this airtightness is weak and cannot be used independently, but it is sufficient to compensate for the connection defects of the templates 3. This solves the risk of connection defects that always exist when multiple templates are connected into one, and achieves excellent airtightness of composite molds, so there is no need to worry about airtightness testing.

[0027] As an optional implementation method, refer to Figure 1 and 2 A splicing structure for template 3 is provided, specifically: multiple templates 3 are sequentially and completely matched with the processing curved surface in the width direction, and the multiple templates 3 are connected as a whole to match the processing curved surface. In this embodiment, before connecting the multiple templates 3 into a whole, the multiple templates 3 need to be processed sequentially and then spliced ​​together. Here, the processing difficulty and splicing difficulty need to be considered. To this end, the processing curved surface is divided into multiple blocks in the length direction (multiple cross-sections), and the multiple templates 3 correspond one-to-one with the multiple processing curved surfaces in sequence. That is, each template 3 has the full width and a part of the length of the processing curved surface, so that the template 3 needs to be matched with the full width of the processing curved surface in sequence during processing, which makes the processing of the template 3 orderly. Processing the entire width at one time also makes it easier to splice the templates 3 by splicing only the length direction of the processing curved surface, and only the order of the width direction needs to be considered. More preferably, the multiple templates 3 are provided with connecting plates 31 at the edges that match the width direction of the processing curved surface. The connecting plates 31 are integrally formed with the corresponding templates 3 and are used to temporarily fix the templates 3. After splicing multiple templates 3, they need to be connected into one piece in sequence. When connecting them in pairs, it is inevitable that other templates 3 will be affected. Therefore, after splicing, multiple templates 3 need to be temporarily fixed. However, directly fixing the templates 3 to the matching part of the processing curved surface can easily cause problems such as improper matching later. Therefore, a connecting plate 31 is set at the edge of the template 3 for temporary fixing of the template 3.

[0028] As an optional implementation method, refer to Figure 1and 2 A template 3 structure is provided, specifically: the template 3 has a chamfer at its edge outside the processed curved surface, the chamfer being set to 0°-90°, more preferably 45°. Preferably, the chamfer length of the template 3 is 5-20mm, more preferably 10-12mm. In this embodiment, after multiple templates 3 are laid sequentially on the thin plate 2, before they are connected as a whole, it is necessary to temporarily fix the template 3 to the thin plate 2 and the frame 1. However, since the template 3 is relatively thick, the angle between the template 3 and the thin plate 2 is a right angle when temporarily fixing, making it difficult to use either bonding or welding. After setting the chamfer, the angle between the template 3 and the thin plate 2 becomes an obtuse angle, and the template 3 will always extend a corner for temporary fixing, making temporary fixing more convenient.

[0029] As an optional implementation method, refer to Figure 1 and 2 A frame structure 1 is provided, specifically: the frame 1 includes: a base 11; and multiple processing parts 12, each fixedly mounted on the base 11. The side of the processing part 12 facing away from the base 11 is a processed curved surface. Preferably, the base 11 is welded from rectangular steel pipes. Preferably, the processing parts 12 are made of rectangular steel pipes and / or steel plates. In this embodiment, when the area of ​​the processed curved surface is large, it is difficult to manufacture the frame 1 constituting the processed curved surface in one go. Therefore, the processed curved surface is divided into multiple sections, each section corresponding to a processing part 12 constituting the processed curved surface. Multiple processing parts 12 together constitute the processed curved surface, making the manufacturing of the processed curved surface easier. Furthermore, during subsequent use, if a problem occurs in a certain section of the processed curved surface, the corresponding processing part 12 can be quickly identified for maintenance or replacement.

[0030] As an optional implementation method, refer to Figure 1 and 2A structure for splicing processing units 12 is provided, specifically: multiple processing units 12 sequentially constitute a processing curved surface with the full width and a preset length, and the multiple processing units 12 together constitute a complete processing curved surface. In this embodiment, when the area of ​​the processing curved surface is large, it is difficult to manufacture the frame 1 constituting the processing curved surface in one go. Therefore, the processing curved surface is divided into multiple sections, each section corresponding to a processing unit 12 constituting the processing curved surface, and the processing curved surface is jointly constituted by multiple processing units 12. When multiple processing units 12 jointly constitute the processing curved surface, the processing units 12 need to be manufactured separately, and then spliced ​​together to form the processing curved surface. In this process, the splicing difficulty needs to be considered. If the sections of the processing curved surface are divided in an disordered manner, it will lead to time-consuming and laborious splicing. Therefore, the processing curved surface is divided into multiple blocks in the length direction (multiple cross-sections), so that multiple processing units 12 correspond one-to-one with multiple processing curved surfaces, that is, each processing unit 12 has the full width and a part of the length of the processing curved surface, so that the processing units 12 become orderly when splicing, and only the order needs to be considered.

[0031] As an optional implementation method, refer to Figure 1 and 2A processing section 12 is provided, specifically comprising: a support section 121, which is mountain-shaped; and a curved surface adaptation section 122, the side of the curved surface adaptation section 122 facing away from the support section 121 being a processing curved surface. The support section 121 supports the curved surface adaptation section 122, and the height of each side of the mountain-shaped support section 121 is set according to the curved surface adaptation section 122. Preferably, a vertical support column can be added in the middle of the mountain-shaped section, and the number and length of the support column are determined according to the width and outline shape of the processing curved surface. Preferably, the processing section 12 is made entirely of steel plate. Preferably, the support section 121 is welded from a rectangular steel tube, and the curved surface adaptation section 122 is made from a rectangular steel tube, with the curved surface adaptation section 122 and the support section 121 welded together. In this embodiment, one side of the processing part 12 forms a processing curved surface. The curved contour of the processing curved surface is set according to the part to be processed. The cross-section of the processing curved surface may be irregular or arc-shaped. Therefore, a curved surface adaptation part 122 is used to process it into an irregular or arc-shaped form. The curved surface adaptation part 122 can be manufactured using materials such as rectangular steel pipe, circular steel pipe, steel plate, and / or iron plate. Due to the irregular or arc-shaped shape of the curved surface adaptation part 122, it is necessary to pay attention to whether there is a risk of deformation of the curved surface adaptation part 122 during long-term use. Therefore, the support part 121 supporting the curved surface adaptation part 122 is set as a mountain shape. The support columns on both sides of the mountain shape support the two ends of the curved surface adaptation part 122 respectively, and the middle support column of the mountain shape supports the middle of the curved surface adaptation part 122. When the width of the processed curved surface is too long, additional support columns can be added in the middle of the mountain-shaped section to support all the main load-bearing points of the curved surface adaptation section 122.

[0032] As an optional implementation method, refer to Figure 1 and 2 A base 11 structure is provided, specifically: the base 11 is rectangular, and support columns 13 are respectively provided at the four corners of the rectangular base 11. The processing part 12 is disposed between the support columns 13. The support columns 13 are used to fix the base 11, and / or, the support columns 13 are used for splicing two bases 11 together. In this embodiment, when the processing curved surface is too large, and one mold cannot meet its needs, two molds can be spliced ​​together. When splicing, in order to ensure the stability of the splicing, a larger contact area is required between the two molds, and it should not affect the processing curved surface. Under this requirement, support columns 13 are respectively provided at the four corners of the rectangular base 11, so that when the molds are in contact with each other, not only the base 11 contacts, but the support columns 13 also contact, which greatly increases the contact area, allowing the composite mold to adapt to the manufacturing of larger parts. At the same time, the larger connection area can also better fix the mold itself and avoid the risk of displacement during production.

[0033] As an optional implementation method, refer to Figure 1 and 2 A structure for a thin plate 2 and a template 3 is provided, specifically: both the thin plate 2 and the template 3 are made of metal plates. Preferably, both the thin plate 2 and the template 3 are made of ordinary carbon steel. Preferably, the thickness of the thin plate 2 is 1-5mm, more preferably 2-3mm. Preferably, the thickness of the template 3 is 10-30mm, more preferably 15-18mm. Preferably, the perimeter width of the metal thin plate 2 is 10-100mm wider than the perimeter of the template 3 after it is integrally connected, more preferably 50-70mm. In this embodiment, during the laying of the thin plate 2 and the template 3 and the connection of multiple templates 3 into one unit, various methods can be used depending on the material of the template 3 and the thin plate 2, including but not limited to strong adhesive bonding, welding, etc. Taking welding as an example, in order to enable welding during the laying of the thin plate 2 and the template 3 and the connection of multiple templates 3 into one unit, the materials of the thin plate 2 and the template 3 are metal, so that the thin plate 2 and the template 3 can provide better airtightness while allowing the use of metal welding technology during the laying process. Specific welding methods can include submerged arc welding, argon arc welding, etc.

[0034] The second embodiment of this application provides a method for manufacturing composite molds, the specific technical solution of which is as follows:

[0035] The blanking frame 1 is designed based on the parts to be processed, and one side of the frame 1 is designated as the processing surface. Specifically, a plasma cutting machine is used to cut the base 11 and processing section 12 of the frame 1. The base 11 can be made of rectangular steel pipe, and the processing section 12 can be made of rectangular steel pipe, and / or steel plate, etc. When blanking the base 11, the rectangular steel pipe is cut to a preset length using a plasma cutting machine, and then the cut rectangular steel pipes are spliced ​​into a preset shape. The spliced ​​rectangular steel pipes are then fixed together using a welding process. When blanking the processing section 12, a whole steel plate can be cut into a preset shape. Alternatively, a plasma cutting machine can be used to cut the rectangular steel pipe to a preset length, and then the cut rectangular steel pipes can be spliced ​​into a preset shape. The spliced ​​rectangular steel pipes are then fixed together using a welding process. Alternatively, the support part 121 of the processing part 12 can be cut from a single piece of steel plate into a preset shape, and then a rectangular steel tube can be cut to a preset length using a plasma cutting machine. This rectangular steel tube can then be processed into a curved surface adaptation part 122, and finally the support part 121 and the curved surface adaptation part 122 can be welded together. After the multiple processing parts 12 are cut, they are sequentially welded to the base 11 to achieve the cutting of the overall frame 1.

[0036] A thin plate 2 is laid on the machined curved surface and made to fit the thin plate 2 into the machined curved surface. Specifically, a metal thin plate 2 is laid on the machined curved surface formed by the curved surface adaptation part 122. The metal thin plate 2 is softened and completely fitted into the machined curved surface by using a flame torch and an ejector block. The gap between the metal thin plate 2 and the curved surface adaptation part 122 is checked. If it is less than 1mm, it is acceptable; if it is greater, it needs to be rectified to ensure that the machined curved surface will not deform or have other risks during long-term use of the mold.

[0037] Multiple templates 3 are sequentially laid on the thin plate 2 and then attached to the thin plate 2. Specifically, the templates 3 are processed. When the area of ​​the processed curved surface is large, it is difficult to manufacture and install the templates 3 that match the processed curved surface in one go. Therefore, the processed curved surface is divided into multiple plates, each plate is matched with a template 3, and multiple templates 3 are used to match the processed curved surface. The templates 3 are sequentially processed into shapes that match the plates of the processed curved surface and then laid on the thin metal plate 2, so that the templates 3 are completely attached to the thin metal plate 2. Next, the templates 3 are temporarily fixed to the machined curved surface in sequence. After splicing, multiple templates 3 are connected into one piece. When connecting two templates at a time, it is inevitable that other templates 3 will be affected. Therefore, after splicing, multiple templates 3 need to be temporarily fixed first. However, directly fixing the templates 3 to the matching parts of the machined curved surface can easily cause problems such as improper matching later. Therefore, connecting plates 31 are set at the edges of the templates 3 for temporary fixing of the templates 3. The connecting plates 31 are temporarily fixed to the thin plate 2 by electric welding, and / or, the templates 3 are temporarily fixed to the frame 1 by I-clamps. After the temporary fixing is completed, the multiple templates 3 are fully welded to each other using welding processes such as submerged arc welding and argon arc welding. The templates 3 after being welded into one piece match the machined curved surface.

[0038] After the initial welding of the mold is completed, the composite mold undergoes overall heat aging to reduce processing deformation and effectively eliminate stress. The surface of template 3 is CNC machined and measured. Deformation is inevitable during the welding of template 3. To ensure a perfect match between template 3 and the processed curved surface, and to ensure that the parts produced by this composite mold meet standards, the surface of template 3 needs further refinement after welding and stress elimination. CNC machining and measurement of the template 3 surface are used to meet the requirement of perfect matching between multiple templates 3 welded together and the processed curved surface. Finally, the front side of the metal sheet 2 is polished, resulting in a high-quality composite mold.

[0039] When using the composite mold disclosed in this application to produce parts, the sealing bag is laid on the metal sheet 2 to ensure airtightness during the production process.

[0040] In this embodiment, a method for manufacturing composite molds is proposed. A thin plate 2 is laid on the machined curved surface of a frame 1 and fitted to the machined curved surface of the frame 1. This ensures that the curved contour of the machined surface is not affected while also providing a certain degree of airtightness. Multiple templates 3 are sequentially laid on and fitted onto the thin plate 2, and connected as a whole. However, this connection always carries the risk of connection defects, leading to an overall airtightness risk for the template 3. The machined curved surface where the thin plate 2 is laid has a certain degree of airtightness, although this airtightness is weak and cannot be used independently. However, it is sufficient to compensate for the connection defects of the templates 3. This solves the risk of connection defects that always exists when multiple templates 3 are connected as a whole, achieving excellent airtightness in the composite mold, and thus eliminating concerns about airtightness testing.

[0041] As an optional implementation, a processing method for template 3 is provided, specifically: before sequentially laying multiple templates 3 on the thin plate 2, the multiple templates 3 are sequentially processed to match the full width of the processed curved surface, and then the multiple templates 3 are connected as a whole to match the processed curved surface. In this embodiment, before connecting the multiple templates 3 as a whole, the multiple templates 3 need to be processed sequentially and then spliced ​​together. Here, the processing difficulty and splicing difficulty need to be considered. Here, the processed curved surface is divided into multiple pieces along its length (multiple cross-sections), and the multiple templates 3 correspond one-to-one with the multiple processed curved surfaces, that is, each template 3 has the full width and a part of the length of the processed curved surface. When processing, the templates 3 need to be sequentially matched with the full width of the processed curved surface. The multiple templates 3 are sequentially laid on the metal thin plate 2 and spliced, and the full width is processed at one time so that when splicing the templates 3, only the length direction of the processed curved surface needs to be spliced, and only the order of the width needs to be considered.

[0042] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A method for manufacturing a composite mold, characterized in that, include: According to the blanking frame (1) of the part to be processed, and setting one side of the frame (1) as the processing surface, the curved contour of the processing surface matches the contour of the composite part to be processed; A thin plate (2) is fixedly laid on the processing curved surface and the thin plate (2) is made to fit the processing curved surface; Multiple templates (3) are sequentially laid on the thin plate (2), and the multiple templates (3) sequentially laid on the thin plate (2) are connected as one unit, and the multiple templates (3) are attached to the thin plate (2); Multiple templates (3) are sequentially and completely matched with the processing surface in the width direction, and multiple templates (3) are connected as one unit and matched with the processing surface; The template (3) has a chamfer at the edge position outside the processing surface, and the chamfer is set to 0°-90°.

2. The method for manufacturing a composite mold as described in claim 1, characterized in that, The framework (1) includes: Base (11); The processing part (12) is configured as a plurality of parts and is fixedly disposed on the base (11). The side of the processing part (12) facing away from the base (11) is the processing surface.

3. The method for manufacturing a composite mold as described in claim 2, characterized in that, The multiple processing parts (12) sequentially constitute a processing curved surface with the full width and a preset length, and the multiple processing parts (12) together constitute a complete processing curved surface.

4. The method for manufacturing a composite mold as described in claim 2 or 3, characterized in that, The processing unit (12) includes: Support part (121), wherein the support part (121) is mountain-shaped; The curved surface adaptation part (122) has the side of the curved surface adaptation part (122) facing away from the support part (121) as the processing curved surface. The support part (121) supports the curved surface adaptation part (122). The height of each side of the mountain-shaped support part (121) is set according to the curved surface adaptation part (122).

5. The method for manufacturing a composite mold as described in claim 2 or 3, characterized in that, The base (11) is rectangular, and each of the four corners of the rectangular base (11) is provided with a support column (13). The processing part (12) is located between the support columns (13). The support columns (13) are used to fix the base (11) and / or the support columns (13) are used for splicing the base (11) in pairs.

6. The method for manufacturing a composite mold as described in claim 1, characterized in that, Both the thin plate (2) and the template (3) are made of metal plates.

7. The method for manufacturing a composite mold as described in claim 1, characterized in that, Before laying multiple templates (3) sequentially on the thin plate (2), the multiple templates (3) are processed sequentially to match the full width of the processed curved surface, and the multiple templates (3) are connected as one unit to match the processed curved surface.

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