One-piece carbon fiber composite material wheel hub and method of manufacturing the same

Abstract

The application relates to the technical field of hub manufacturing, in particular to a one-piece carbon fiber composite hub and a manufacturing method thereof. The hub comprises a first structure body and a second structure body, a thickened body and a plurality of filling parts between the first structure body and the second structure body. The first structure body comprises a first structure part and a second structure part. The first structure part comprises a first cylinder body and a second cylinder body, and a spoke coaming uniformly arranged between the first cylinder body and the second cylinder body. The second structure part comprises a third cylinder body and a reinforcing part. One end of the third cylinder body extends outward to form a connecting flange. The reinforcing part is arranged at the other end of the third cylinder body, and the reinforcing part has a spoke bottom plate matched with the spoke coaming. The connecting end of the first structure part is connected with the connecting part of the second structure part. The application has the advantages that the hub is divided into the first structure body, the second structure body, the thickened body and the plurality of filling parts, and the manufacturing difficulty is reduced through the division.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wheel hub, in particular to a one-piece carbon fiber composite wheel hub and a manufacturing method thereof. BACKGROUND

[0002] In order to meet the needs of human sustainable development, energy saving and emission reduction has become a new mission faced by today's automobile manufacturers. All automobile parts suppliers enterprises, starting from production materials and structure, etc., have put forward new concepts of energy saving and emission reduction. "Lightweight" wheel hub is one of the green technologies of energy saving. At present, the automobile industry is committed to the lightweight design of the whole vehicle, which has become a means for major automobile enterprises at home and abroad to reduce production costs and improve market competitiveness. Under the premise of not reducing the mechanical properties of parts, reducing the unsprung mass not only can effectively reduce the weight of the vehicle body, but also can reduce the gravity center of the vehicle body, reduce the inertia when turning, so as to enhance the overall performance of the vehicle while lightening, and realize the goal of energy saving and emission reduction.

[0003] At present, the forming process of carbon fiber composite automobile wheel hub mainly concentrates on heat pressing tank forming process, mold pressing forming process and HP-RTM (High Pressure Resin Transfer Molding) forming process. These forming processes have their own advantages and disadvantages, at the same time, the one-piece carbon fiber wheel hub structure is complex, the processing difficulty is big, and the mechanical property requirement is high, which also indirectly limits the development of one-piece carbon fiber wheel hub. SUMMARY

[0004] Therefore, the present application aims to provide a one-piece carbon fiber composite wheel hub and a manufacturing method thereof. The wheel hub is divided into a first structure body and a second structure body, and a thickened body and a plurality of filling portions located between the first structure body and the second structure body. According to the divided structure body, the layer structure is formed, which reduces the process procedure, shortens the manufacturing time of the wheel hub and reduces the manufacturing cost under the premise of ensuring the overall structure and strength of the wheel hub. The present application provides a feasible method for efficiently producing one-piece full carbon fiber composite wheel hub, which is conducive to promoting the development of lightweight wheel hub.

[0005] To achieve the above object, the technical scheme of the present application is implemented as follows: a one-piece carbon fiber composite hub, the hub being made of multiple layers of carbon fiber laying, comprising: a first structure, a second structure, and a thickening body and multiple filling parts between the first structure and the second structure; the second structure is laid outside the first structure; wherein the first structure comprises a first structure part and a second structure part; the first structure part comprises a first cylinder, a second cylinder and multiple spoke enclosures; the first cylinder is sleeved outside the second cylinder; the multiple spoke enclosures are uniformly arranged between the first cylinder and the second cylinder; the second structure part comprises a third cylinder and a reinforcing part, one end of the third cylinder extends outward to form a connecting flange; the reinforcing part is arranged at the other end of the third cylinder, and the reinforcing part has multiple spoke bottom plates matched with the multiple spoke enclosures.

[0006] Further, the reinforcing part comprises a reinforcing ring and a limiting ring, the reinforcing ring is sleeved outside the limiting ring, one end of the spoke bottom plate is connected with the inner wall of the reinforcing ring, and the other end of the spoke bottom plate is connected with the outer wall of the limiting ring.

[0007] Further, the spoke interior is provided with a spoke filling part, and the material of the spoke filling part is PMI foam.

[0008] Further, the thickening body is located between the first structure part and the second structure, and between the second structure part and the second structure.

[0009] Further, the material of the thickening body is carbon cloth.

[0010] Further, the multiple filling parts comprise a first filling part, a second filling part, a third filling part and a fourth filling part.

[0011] Further, the first filling part is located between the first structure part and the second structure; the second filling part is located between the thickening body and the second structure; the third filling part and the fourth filling part are located between the second structure part and the second structure.

[0012] Further, the materials of the first filling part, the second filling part, the third filling part and the fourth filling part are PMI foam.

[0013] A one-piece carbon fiber composite hub manufacturing method is used to manufacture the one-piece carbon fiber composite hub, and the specific steps are as follows:

[0014] S1: a first structure mold is prepared in advance, and a thickening body and multiple filling parts are prepared; wherein the first structure mold comprises an upper mold for preparing a first structure part and a lower mold for preparing a second structure part.

[0015] S2: first, the first structure part and the second structure part are obtained according to the order of the laying structure; then, a spoke filling part is arranged on the spoke bottom plate of the second structure part.

[0016] S3: The first structure part and the second structure part are clamped together, and curing molding is performed through a vacuum bag and a hot press tank to obtain a first structure body.

[0017] S4: The outer surface of the first structure body is processed, the thickening body and the plurality of fillers are glued to the outer surface of the first structure body at preset positions, and a hub main body is formed.

[0018] S5: The hub main body is used as a second structure body mold, and the second structure body is formed according to a layering structure of the second structure body to obtain an uncured hub preform.

[0019] S6: The uncured hub preform is placed in an HP-RTM mold for curing molding, and finally a hub blank is obtained.

[0020] S7: The hub is surface treated, and an air nozzle through slot is processed, and the hub manufacturing is completed.

[0021] Further, in step S2, the first structure part forming and the second structure part forming include the following steps:

[0022] S21: The upper mold and the lower mold are fixed on a winding machine, and a layer of sleeve is laid on the surfaces of the upper mold and the lower mold, respectively.

[0023] S22: First, a spoke surround is formed by using wet laying carbon cloth according to a first preset layering sequence and a number of layers; then, a first cylinder is formed by using wet laying carbon cloth according to a second preset layering sequence and a number of layers; finally, a second cylinder is formed by using wet laying carbon cloth according to a third preset layering sequence and a number of layers; the spoke surround, the first cylinder and the second cylinder form the first structure part; at the same time, a third cylinder, a connecting flange and a reinforcing part are formed by using wet laying carbon cloth according to a fourth preset layering sequence and a number of layers to form a second structure part preform; then, the connecting flange is supplemented and laid according to a fifth preset layering sequence and a number of layers; finally, the reinforcing part is supplemented and laid according to a sixth preset layering sequence and a number of layers, and the second structure part is finally formed.

[0024] S23: The spoke filler part is pasted on the spoke bottom plate of the second structure part.

[0025] Compared with the prior art, the application can achieve the following beneficial effects:

[0026] 1) The hub is divided into a first structure body, a second structure body, a thickening body and a plurality of fillers, and the manufacturing difficulty is reduced through this division.

[0027] 2) The spoke filler part, the first filler part, the second filler part, the third filler part and the fourth filler part are made of PMI foam, which not only reduces the weight of the hub, but also facilitates processing and molding, and saves costs.

[0028] 3) The application uses the sleeve to enhance the strength of the hub in combination with the carbon cloth, and the sleeve also makes the appearance of the hub more regular.

[0029] 4) The application adopts the wet laying and HP-RTM to save the time of forming the hub and improve the strength of the hub. BRIEF DESCRIPTION OF DRAWINGS

[0030] The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the application and are incorporated herein in their entirety. The detailed description and examples that follow are included for the purpose of illustrating the present application and are not intended to limit the same. In the drawings:

[0031] Figure 1 is a structural schematic view of a one-piece full-carbon fiber composite material hub structure according to an embodiment of the application;

[0032] Figure 2 is a structural schematic view of a first structure according to an embodiment of the application;

[0033] Figure 3 is a structural schematic view of a first structure according to an embodiment of the application;

[0034] Figure 4 is a structural schematic view of a second structure according to an embodiment of the application;

[0035] Figure 5 is a structural schematic view of a second structure according to an embodiment of the application;

[0036] Figure 6 is Figure 5 a sectional view of the second structure of

[0037] Figure 7 is a structural schematic view of a second structure according to an embodiment of the application.

[0038] The reference signs include: 1, first structure; 11, first structure; 111, first cylinder; 112, second cylinder; 113, spoke apron; 12, second structure; 121, third cylinder; 122, reinforcing part; 123, connecting flange; 1221, reinforcing ring; 1222, limiting ring; 1223, spoke bottom plate; 13, spoke filling part; 2, second structure; 21, fourth cylinder; 22, covering part; 221, spoke covering plate; 222, fifth cylinder; 3, thickened body; 4, first filling part; 5, second filling part; 6, third filling part; 7, fourth filling part. DETAILED DESCRIPTION

[0039] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not constitute a limitation on the present application.

[0040] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0041] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" and the like are only used for description purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0042] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] The present application will be described in detail below with reference to the embodiments.

[0044] As Figures 1 to 7 shown, the one-piece carbon fiber composite hub provided by the embodiment of the present application is made of multiple layers of carbon fiber laying, which comprises: a first structure 1 and a second structure 2, and a thickened body 3 and a plurality of filling portions located between the first structure 1 and the second structure 2. The second structure 2 is laid outside the first structure 1.

[0045] The first structure 1 comprises a first structure part 11 and a second structure part 12. The first structure part 11 comprises a first cylinder 111, a second cylinder 112 and a plurality of spoke shrouds 113. The first cylinder 111 is sleeved outside the second cylinder 112. The plurality of spoke shrouds 113 are evenly arranged between the first cylinder 111 and the second cylinder 112, that is, one end of each spoke shroud 113 is connected with the inner wall of the first cylinder 111, and the other end of each spoke shroud 113 is connected with the outer wall of the second cylinder 112.

[0046] The second structure part 12 comprises a third cylinder 121 and a reinforcing part 122. One end of the third cylinder 121 extends outward to form a connecting flange 123. The reinforcing part 122 is arranged at the other end of the third cylinder 121. The reinforcing part 122 has a plurality of spoke bottom plates 1223 matched with the plurality of spoke shrouds 113. A spoke filling part 13 is arranged on the spoke bottom plate 1223. The material of the spoke filling part 13 is PMI (polymethacrylimide) foam.

[0047] In some embodiments, the number of the spoke shrouds 113 and the spoke bottom plates 1223 is six.

[0048] When the first structure part 11 is connected with the second structure part 12, each spoke shroud 113 and the corresponding spoke bottom plate 1223 jointly constitute a hollow hexahedral spoke hub. The spoke filling part 13 is located inside the spoke hub. Specifically, the spoke shroud 113 occupies five faces of the hexahedral spoke hub, and the spoke bottom plate 1223 is the remaining one face of the hexahedral spoke hub. The two combine to form a hollow hexahedral spoke hub.

[0049] Further, the reinforcing part 122 comprises a reinforcing ring 1221 and a limiting ring 1222. The reinforcing ring 1221 is sleeved outside the limiting ring 1222. One end of each spoke bottom plate 1223 is connected with the inner wall of the reinforcing ring 1221, and the other end of each spoke bottom plate 1223 is connected with the outer wall of the limiting ring 1222.

[0050] The second structure 2 comprises a fourth cylinder 21 and a covering part 22. The fourth cylinder 21 is sleeved outside the first structure 1 along the axial direction of the first structure 1. The covering part 22 covers the six spoke shrouds 113 of the first structure part 11 and the inner surface of the second cylinder 112. Specifically, the covering part 22 comprises six spoke covering plates 221 and a fifth cylinder 222. The six spoke covering plates 221 correspond to the six spoke shrouds 113 one by one. The fifth cylinder 222 is nested inside the second cylinder 112.

[0051] Further, the thickened body 3 is located between the first structure 11 and the second structure 2, and between the second structure 12 and the second structure 2. The material of the thickened body 3 is carbon cloth.

[0052] The plurality of filling portions include a first filling portion 4, a second filling portion 5, a third filling portion 6 and a fourth filling portion 7 arranged in sequence along the axial direction of the second structure 2. The first filling portion 4 is located between the first structure 11 and the second structure 2. The second filling portion 5 is located between the thickened body 3 and the second structure 2. The third filling portion 6 and the fourth filling portion 7 are located between the second structure 12 and the second structure 2. In this embodiment, the thickened body 3 is carbon cloth, and the materials of the first filling portion 4, the second filling portion 5, the third filling portion 6 and the fourth filling portion 7 are all PMI foam.

[0053] The bending condition, 13° impact condition and 90° impact condition of the one-piece carbon fiber composite hub are simulated and analyzed by using the finite element analysis software ANSYS, and the results show that the one-piece carbon fiber composite hub meets the strength requirement.

[0054] A one-piece carbon fiber composite hub manufacturing method is used to manufacture the one-piece carbon fiber composite hub, and the specific steps are as follows:

[0055] S1: A first structure mold, a spoke filling portion 13, a thickened body 3 and a plurality of filling portions are prepared in advance. The first structure mold includes an upper mold for preparing the first structure 11 and a lower mold for preparing the second structure 12.

[0056] S2: First, the first structure 11 forming and the second structure 12 forming are respectively performed according to the layer structure. Then, the spoke filling portion 13 is placed on the spoke bottom plate 1223 of the second structure 12. The specific steps include:

[0057] S21: The upper mold and the lower mold are fixed on the winding machine, and a layer of carbon fiber sleeve is laid on the surface of the upper mold and the lower mold.

[0058] In this embodiment, the winding machine is a purchased part, which is a five-axis horizontal numerical control cloth bag winding machine produced by Weihai Hongcheng Electromechanical Equipment Co., Ltd.

[0059] S22: First, the carbon cloth is laid by wet method according to the first preset layering sequence and the number of layers to form the spoke coaming 113. Then, the carbon cloth is laid by wet method according to the second preset layering sequence and the number of layers to form the first barrel 111. Finally, the carbon cloth is laid by wet method according to the third preset layering sequence and the number of layers to form the second barrel 112. At this time, the spoke coaming 113, the first barrel 111 and the second barrel 112 form the first structure 11.

[0060] Meanwhile, the third cylinder 121, the connecting flange 123 and the reinforcing part 122 are laid by using the wet laying method according to the fourth preset laying sequence and the number of layers, to form a second structure part preform. Then, the connecting flange 123 is laid by patching according to the fifth preset laying sequence and the number of layers. Finally, the reinforcing part 122 is laid by patching according to the sixth preset laying sequence and the number of layers, to finally form the second structure part 12.

[0061] In the embodiment, the thickness of the spoke surrounding plate 113 is 3mm, and the laying sequence and the number of layers (i.e. the first preset laying sequence and the number of layers) are: [0°, 90°], [±45°], [0°, 90°], [±45°], [0°, 90°], [±45°], [0°, 90°].

[0062] The thickness of the first cylinder 111 is 3mm, and the laying sequence and the number of layers (i.e. the second preset laying sequence and the number of layers) are: [0°, 90°], [±45°], [0°, 90°], [±45°], [0°, 90°], [±45°], [0°, 90°].

[0063] The thickness of the second cylinder 112 is 5mm, and the laying sequence and the number of layers (i.e. the third preset laying sequence and the number of layers) are: [0°, 90°], [±45°], [0°, 90°], [±45°], [0°, 90°], [±45°], [0°, 90°], [±45°], [0°, 90°], [±45°], [0°, 90°].

[0064] The thickness of the third cylinder 121 in the second structure part 12 is 3mm, the thickness of the connecting flange 123 is 6mm, and the thickness of the reinforcing part 122 is 7mm, wherein the fourth preset laying sequence and the number of layers are: [0°, 90°], [±45°], [0°, 90°], [±45°], [0°, 90°], [±45°], [0°, 90°].

[0065] The fifth preset laying sequence and the number of layers are: [0°, 90°], [±45°], [0°, 90°], [±45°], [0°, 90°], [±45°], [0°, 90°].

[0066] The sixth preset laying sequence and the number of layers are: [0°, 90°], [±45°], [0°, 90°], [±45°], [0°, 90°], [±45°], [0°, 90°], [±45°], [0°, 90°], [±45°].

[0067] S23: Paste the spoke filling part 13 on the spoke bottom plate 1223 of the second structure part 12.

[0068] S3: The first structure 11 and the second structure 12 are closed and cured by vacuum bag and autoclave to obtain the first structure body 1. At this time, each spoke fence 113 and the corresponding spoke bottom plate 1223 form a hub spoke, and the spoke filling part 13 is located inside the hub spoke.

[0069] In this embodiment, the vacuum bag sequentially includes a layer of heat-shrinkable film, a layer of high-temperature porous isolation film, a layer of thin air-permeable felt, a layer of high-temperature non-porous isolation film, a layer of thick air-permeable felt, and a layer of high-temperature non-porous vacuum bag from inside to outside. The vacuum bag is also sealed by high-temperature sealing rubber strips to ensure that gas does not leak from the edges. At the vacuum nozzle of the vacuum bag, the number of layers of air guide felt is not less than two to ensure that the gas can be smoothly guided out and the sealing property is maintained.

[0070] The autoclave is a purchased part, with a diameter of 2.5 meters and a height of 3 meters, produced by Dalian Yingtian Machinery Manufacturing Co., Ltd.

[0071] The curing process is as follows: first, the temperature of the autoclave is raised to 60°C, the pressure is adjusted to 0.2 Mpa, and the temperature is maintained for 1 hour. Then, the temperature of the autoclave is raised to 80°C, the pressure is adjusted to 0.5 Mpa, and the temperature is maintained for 1 hour. Finally, the temperature of the autoclave is raised to 150°C, the pressure is maintained at 0.5 Mpa, and the temperature is maintained for 0.5 hours to complete the curing of the first structure body 1. When the first structure body 1 is cured and formed, the first structure mold is naturally cooled to below 40°C, and then demolding is performed to take out the already formed first structure body 1. During the entire curing process, the pressing rate of the autoclave is 0.02 Mpa / min.

[0072] S4: The outer surface of the first structure body 1 is processed, and the thickening body 3 and the plurality of filling parts are glued to the outer surface of the first structure body 1 according to the preset positions to form the hub main body.

[0073] In this embodiment, processing the outer surface of the first structure body 1 includes two steps: first, processing the excess residue on the surface of the first structure body 1. Second, processing the outer surface of the first structure body 1 to increase the roughness of the surface, facilitating the subsequent gluing of the thickening body 3, the first filling part 4, the second filling part 5, the third filling part 6, and the fourth filling part 7, and ensuring that they can be firmly attached to the first structure body 1.

[0074] S5: The hub main body is used as a second structure mold, and the second structure 2 is formed according to the layer structure of the second structure to obtain an uncured hub preform.

[0075] First, carbon cloth is laid on the hub body in the order of layers and the number of layers, and is shaped using 77 spray adhesive (multifunctional spray adhesive), and then a carbon fiber sleeve is laid on the outermost layer. Finally, vacuum treatment is performed using a vacuum pump, and the vacuum degree is at least -0.9Mpa, to ensure that the carbon cloth layers are tightly attached, thereby obtaining an uncured hub preform.

[0076] The second structure 2 is laid in the order of layers and the number of layers as follows: [0°, 90°], [±45°], [0°, 90°], [±45°], [0°, 90°], [±45°], [±60°]. The [±60°] is the layer of the carbon fiber sleeve.

[0077] S6: The uncured hub preform is placed in the HP-RTM mold for curing and forming, and finally a hub blank is obtained.

[0078] The curing process includes: the mold is heated to 80°C to start injecting glue, and after the injection is completed, the mold is heated to 150°C, and kept for 1 hour. After curing, the mold is naturally cooled to below 40°C, and the demolding is performed at room temperature to take out the cured hub preform.

[0079] HP-RTM is the abbreviation of High Pressure Resin Transfer Molding, and the full name is high pressure resin transfer molding process. In this embodiment, the pressure of the high pressure resin transfer molding process is 500T.

[0080] S7: The surface of the cured hub preform is treated, the excess burrs are removed, the air nozzle through slot is processed, the overall surface is polished, the surface glue is sprayed, and the hub is completed after being placed at room temperature for 24 hours.

[0081] The above specific embodiments do not constitute a limitation on the protection scope of the present application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A one-piece carbon fiber composite material wheel hub, characterized by, The hub is made of multiple layers of carbon fiber, comprising: a first structure, a second structure, and a thickening body and multiple filling parts between the first structure and the second structure; the second structure is laid outside the first structure; the thickening body is located between the first structure and the second structure, and between the second structure and the second structure; the material of the thickening body is carbon cloth; The first structure comprises a first structure part and a second structure part; the first structure part comprises a first cylinder, a second cylinder and multiple spoke enclosures; the first cylinder is sleeved outside the second cylinder; multiple spoke enclosures are uniformly arranged between the first cylinder and the second cylinder; the second structure part comprises a third cylinder and a reinforcing part, one end of the third cylinder extends outward to form a connecting flange; the reinforcing part is arranged at the other end of the third cylinder, and the reinforcing part has multiple spoke bottom plates matched with the multiple spoke enclosures, and spoke filling parts are further arranged on the spoke bottom plates; The reinforcing part comprises a reinforcing ring and a limiting ring, the reinforcing ring is sleeved outside the limiting ring, one end of the spoke bottom plate is connected with the inner wall of the reinforcing ring, and the other end of the spoke bottom plate is connected with the outer wall of the limiting ring; The second structure comprises a fourth cylinder and a covering part, the fourth cylinder is sleeved outside the first structure in the axial direction of the first structure, and the covering part covers the multiple spoke enclosures of the first structure part and the inner surface of the second cylinder; the covering part comprises six spoke covering plates and a fifth cylinder, the spoke covering plates correspond to the spoke enclosures one by one, and the fifth cylinder is nested in the inside of the second cylinder.

2. The one-piece carbon fiber composite hub of claim 1, wherein, The spoke is provided with a spoke filling part, and the material of the spoke filling part is PMI foam.

3. The one-piece carbon fiber composite hub of claim 2, wherein, The multiple filling parts comprise a first filling part, a second filling part, a third filling part and a fourth filling part.

4. The one-piece carbon fiber composite hub of claim 3, wherein, The first filling part is located between the first structure part and the second structure; the second filling part is located between the thickening body and the second structure; the third filling part and the fourth filling part are located between the second structure part and the second structure.

5. The one-piece carbon fiber composite hub of claim 3, wherein, The first filling part, the second filling part, the third filling part and the fourth filling part are made of PMI foam.

6. A method of manufacturing a one-piece carbon fiber composite hub for manufacturing the one-piece carbon fiber composite hub of any one of claims 1-5, wherein, The specific steps are as follows: S1: preparing a first structure mold in advance, and preparing a thickening body and multiple filling parts; wherein the first structure mold comprises an upper mold for preparing a first structure part and a lower mold for preparing a second structure part; S2: first, according to the order of the layer structure, the first structure part and the second structure part are obtained; then, the spoke filling part is arranged on the spoke bottom plate of the second structure part; The first structure part forming and the second structure part forming comprise the following steps: S21: fix the upper mold and the lower mold on the winding machine, and lay a layer of sleeve on the surface of the upper mold and the lower mold respectively; S22: first, using wet laying carbon cloth to form spoke surrounding plate according to first preset layering sequence and layer number; then, using wet laying carbon cloth to form first cylinder according to second preset layering sequence and layer number; finally, using wet laying carbon cloth to form second cylinder according to third preset layering sequence and layer number; spoke surrounding plate, first cylinder and second cylinder form first structure part; at the same time, first, using wet laying carbon cloth to lay third cylinder, connecting flange and reinforcing part to form second structure part preform according to fourth preset layering sequence and layer number; then, performing supplementary laying on connecting flange according to fifth preset layering sequence and layer number; finally, performing supplementary laying on reinforcing part according to sixth preset layering sequence and layer number, to finally form second structure part; The thickness of the five surfaces of the spoke surrounding plate is 3mm, the layering sequence and layer number of which are: [0°, 90°], [±45°], [0°, 90°], [±45°], [0°, 90°], [±45°], [0°, 90°]; The thickness of the first cylinder is 3mm, the layering sequence and layer number of which are: [0°, 90°], [±45°], [0°, 90°], [±45°], [0°, 90°], [±45°], [0°, 90°]; The thickness of the second cylinder is 5mm, the layering sequence and layer number of which are: [0°, 90°], [±45°], [0°, 90°], [±45°], [0°, 90°], [±45°], [0°, 90°], [±45°], [0°, 90°], [±45°], [0°, 90°]; The thickness of the third cylinder in the second structure part is 3mm, the thickness of the connecting flange is 6mm, and the thickness of the reinforcing part is 7mm, wherein the fourth preset layering sequence and layer number are: [0°, 90°], [±45°], [0°, 90°], [±45°], [0°, 90°], [±45°], [0°, 90°]; The fifth preset layering sequence and layer number are: [0°, 90°], [±45°], [0°, 90°], [±45°], [0°, 90°], [±45°], [0°, 90°]; The sixth preset layering sequence and layer number are: [0°, 90°], [±45°], [0°, 90°], [±45°], [0°, 90°], [±45°], [0°, 90°], [±45°], [0°, 90°], [±45°]; S23: pasting spoke filling part on the spoke bottom plate of the second structure part; S3: combining the first structure part and the second structure part, and curing and forming by vacuum bag and hot press tank to obtain a first structure body; S4: processing the outer surface of the first structure body, and gluing thickening body and multiple fillings to the outer surface of the first structure body according to preset positions to form a hub body; The processing of the outer surface of the first structure body includes two steps, one is to process the excess residues on the surface of the first structure body, and the other is to process the outer surface of the first structure body to increase the roughness of the surface, so as to facilitate the subsequent pasting of the thickening body, the first filling part, the second filling part, the third filling part and the fourth filling part, and ensure that they can be firmly attached to the first structure body; S5: taking the hub body as a second structure body mold, forming the second structure body according to the layer structure of the second structure body, and obtaining an unsolidified hub preform; S6: placing the unsolidified hub preform into an HP-RTM mold for solidification and forming, and finally obtaining a hub blank; S7: performing surface treatment on the hub and processing the air nozzle through slot, and the hub manufacturing is completed.

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