Manufacturing method and automotive component

Abstract

The application provides a manufacturing method and an automobile part. The manufacturing method of the embodiment of the application is used for manufacturing the automobile part, and the manufacturing method comprises the following steps: providing a blank; stamping the blank to form a stamped part, the stamped part comprising an annular part and a connecting part which are formed in one piece, the annular part being formed with an annular hole, and the connecting part connecting the inner wall of the annular hole; and separating the annular part from the connecting part, so that the annular part forms an annular part, and the connecting part forms a structural part. The manufacturing method of the embodiment of the application forms another structural part by using the inner annular area of the annular part, so that two products are produced by one-time stamping under the limitation of the table surface of the existing production equipment, the number of molds required for manufacturing the automobile part and the machining process are reduced, and the production efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of automotive technology, and more particularly to a manufacturing method and automotive parts. Background Technology

[0002] The one-piece thermoformed door ring process uses a blank to be stamped into a single door ring part, replacing the traditional multiple parts. One-piece thermoformed door rings offer excellent rigidity and strength, and are primarily used in the passenger compartment protection zone between the A-pillar and B-pillar in automobiles. They enhance the protection of vehicle occupants in a collision, and their application in vehicle design and production is becoming increasingly widespread. However, due to the large area of ​​the one-piece thermoformed door ring and the limitations of existing production equipment, the stamping process typically produces only one door ring part at a time, resulting in lower production efficiency. Summary of the Invention

[0003] This application provides a manufacturing method and an automotive part.

[0004] The manufacturing method of this application is used to manufacture automotive parts, and the manufacturing method includes the following steps:

[0005] Provide a blank;

[0006] The blank is stamped to form a stamped part, which includes an integrally formed annular part and a connecting part. The annular part has an annular hole, and the connecting part is connected to the inner wall of the annular hole.

[0007] The annular portion is separated from the connecting portion so that the annular portion forms an annular part and the connecting portion forms a structural part.

[0008] The manufacturing method of this application utilizes the inner annular region of a ring-shaped part to form another structural part, thereby producing two products in a single stamping operation within the limitations of existing production equipment. This manufacturing method can be applied to the combined production of integrated door rings and other automotive parts, reducing the number of molds and processing steps required for manufacturing automotive parts and improving production efficiency.

[0009] In some embodiments, a blank is provided, comprising:

[0010] Provide a single sheet of material of uniform thickness;

[0011] The sheet metal is processed to form a first structural member and a second structural member, the first structural member having an annular hole, and the second structural member connecting to the inner wall of the annular hole;

[0012] Stamping a blank into a stamped part includes:

[0013] The blank is stamped so that the first structural component forms a ring-shaped part and the second structural component forms a connecting part.

[0014] In this way, the entire sheet material is cut and processed, resulting in ring-shaped parts and structural parts with uniform wall thickness.

[0015] In some embodiments, a blank is provided, comprising:

[0016] A first structural component and a second structural component are provided, the first structural component being annular and having an annular hole;

[0017] The second structural component is fixed to the inner wall of the annular hole to obtain the blank;

[0018] Stamping a blank into a stamped part includes:

[0019] The blank is stamped so that the first structural component forms a ring-shaped part and the second structural component forms a connecting part.

[0020] In this way, by forming an annular part and a connecting part through the separate first and second structural components, it is possible to obtain annular parts and structural parts of different materials while satisfying the requirement of forming two parts from a blank in one stamping and improving production efficiency, thus meeting a wider range of production application needs.

[0021] In some implementations, the first structural member and the second structural member have different thicknesses.

[0022] Thus, by connecting and fixing the first and second structural members of unequal thickness and then stamping them to form stamped parts, ring-shaped parts and structural parts of different materials and wall thicknesses can be formed, thereby meeting the needs of more diverse and complex automotive parts products and improving the practicality of the manufacturing method of this application.

[0023] In some embodiments, the first structural member is formed by the following steps:

[0024] Provides multiple separate sub-components;

[0025] Multiple separate sub-components are fixedly connected end to end to form the first structural component.

[0026] In this way, by forming the first structural component from the separate sub-components, a ring-shaped part with a greater difference in wall thickness can be obtained, thereby satisfying the different thickness designs and strength requirements of the ring-shaped part at different locations.

[0027] In some embodiments, the manufacturing method further includes:

[0028] A buffer structure is formed at the connection between the first structural component and the second structural component.

[0029] In this way, the first and second structural components are connected into a whole blank through the buffer structure. During the stamping process, the buffer structure can provide a buffer area, making it difficult for the first and second structural components to break apart, thus forming a whole stamped part.

[0030] In some embodiments, the manufacturing method includes:

[0031] The billet is heated.

[0032] Thus, heating the billet can produce billets with different compositions, thereby meeting the performance requirements of ring-shaped parts and structural parts in terms of hardness, strength, and rigidity, and is also beneficial for the billet to be fully deformed and shaped during the stamping process.

[0033] In some embodiments, the billet is subjected to heat treatment, including:

[0034] The billet is heated until it becomes austenitic.

[0035] In this way, heating the billet austenitizes it, thereby enhancing its rigidity and strength, and improving the mechanical properties of the final ring-shaped and structural parts.

[0036] In some embodiments, separating the annular portion from the connecting portion to form an annular part and the connecting portion to form a structural part includes:

[0037] Laser cutting of stamped parts to form ring-shaped parts, structural parts, and scrap materials;

[0038] Remove excess material.

[0039] In this way, by separating the annular part, the connecting part and the buffer structure through laser cutting, a ring-shaped part and structural parts with clear and complete edges can be obtained.

[0040] The automotive parts described in this application are manufactured using the manufacturing methods of any of the above embodiments.

[0041] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0042] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0043] Figure 1 This is a schematic flowchart of the manufacturing method in the embodiments of this application;

[0044] Figure 2 This is a schematic diagram of step S20 of the manufacturing method according to an embodiment of this application;

[0045] Figure 3 This is a flowchart illustrating a manufacturing method according to another embodiment of this application;

[0046] Figure 4 This is a schematic flowchart of a manufacturing method according to another embodiment of this application;

[0047] Figure 5 This is a flowchart illustrating the control method in another embodiment of this application;

[0048] Figure 6 This is a schematic diagram of the structure of the billet in the embodiments of this application;

[0049] Figure 7 yes Figure 6 A schematic diagram of the local method structure of the billet;

[0050] Figure 8 This is a flowchart illustrating the control method in another embodiment of this application;

[0051] Figure 9 This is a schematic diagram of the structure of the blank according to another embodiment of this application;

[0052] Figure 10 This is a flowchart illustrating the control method in another embodiment of this application;

[0053] Figure 11 This is a flowchart illustrating the control method in another embodiment of this application;

[0054] Figure 12 This is a flowchart illustrating the control method in another embodiment of this application;

[0055] Figure 13 This is a structural schematic diagram of the vehicle in the embodiments of this application;

[0056] Figure 14 This is a schematic diagram of the structure of the annular part in the embodiments of this application;

[0057] Figure 15 This is a structural schematic diagram of the structural parts in the embodiments of this application;

[0058] Figure 16 This is a structural schematic diagram of another structural component in the embodiments of this application.

[0059] Explanation of key figure labels:

[0060] Vehicle 1000, blank 100, first structural component 110, second structural component 120, stamped part 200, annular part 210, annular hole 211, connecting part 220, annular part 310, structural part 320, integrated door ring 311, rear door anti-collision beam 321, top cover and side panel connecting plate 322, sub-component 111, weld 112, buffer structure 130, welding area 131, weld point 132. Detailed Implementation

[0061] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0062] In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0063] The following disclosure provides many different embodiments or examples for implementing different structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0064] Please see Figure 1 and Figure 2 This application provides a manufacturing method for manufacturing automotive parts, and includes the following steps:

[0065] S10, provides a blank of 100;

[0066] S20, the blank 100 is stamped to form a stamped part 200. The stamped part 200 includes an integrally formed annular portion 210 and a connecting portion 220. The annular portion 210 has an annular hole 211, and the connecting portion 220 is connected to the inner wall of the annular hole 211.

[0067] S30, the annular portion 210 is separated from the connecting portion 220 so that the annular portion 210 forms an annular part 310 and the connecting portion 220 forms a structural part 320;

[0068] The manufacturing method of this application utilizes the inner annular region of the annular part 310 to form another structural part 320, thereby producing at least two products in a single stamping operation within the limitations of existing production equipment. The manufacturing method of this application can be applied to the combined production of integrated door rings 311 and other automotive parts, reducing the number of molds and processing steps required for manufacturing automotive parts and improving production efficiency.

[0069] Specifically, in step S10, the billet 100 can be plate-shaped or sheet-shaped, and can be made of special steel material. The billet 100 can be formed by separating it from the base material through methods such as press, shearing machine, sawing machine, laser cutting, flame cutting, and plasma cutting. The billet 100 includes a first structural member 110 and a second structural member 120 connected to the first structural member 110. The first structural member 110 is annular, and the second structural member 120 can be strip-shaped, block-shaped, etc., and is connected to the annular inner contour of the first structural member 110. The annular outer contour of the first structural member 110 can be formed by sequentially connecting contour segments with a certain curvature and contour segments that are close to straight lines. The second structural member 120 can have two ends, which can be respectively connected to two opposite points on the annular inner contour of the first structural member 110.

[0070] In step S20, the blank 100 is placed entirely into a stamping die for stamping, so that the first structural member 110 and the second structural member 120 form an annular portion 210. Before placing the blank 100 into the stamping die, it can be heat-treated to enhance its plasticity, which is beneficial for stamping. The contour edge of the first structural member 110 extends beyond or is equal to the contour edge of the annular portion 210, and the contour edge of the second structural member 120 extends beyond or is equal to the contour edge of the connecting portion 220. The annular portion 210 can be a closed ring, and its inner / outer contour is curved, or it can include a partial straight segment. The inner contour of the annular portion 210 is formed as the inner wall of the annular hole 211. The connecting portion 220 is connected to the wall of the annular portion 210, and the relative position of the connecting portion 220 and the annular portion 210 can be consistent with the relative position of the first structural member 110.

[0071] In step S20, the blank 100 can be placed in production equipment such as a heating furnace or a stamping machine for processing. Since the connecting part 220 is located inside the annular hole 211 of the annular part 210, the outer contour of the stamped part 200 will not exceed the outer contour of the annular part 210. Thus, the connecting part 220 and the annular part 210 can be combined for production under the equipment table limitations that allow for the separate production of the annular part 210.

[0072] In step S30, the stamped part 200 can be cut at the connection between the annular portion 210 and the connecting portion 220 using methods such as laser cutting or plasma cutting, separating the annular portion 210 and the connecting portion 220. The annular portion 210 forms an annular part 310, which can be used for a vehicle door ring, and the connecting portion 220 forms a structural part 320, which can be used for the inner panel of the A-pillar, the inner panel of the upper side beam, the rear door anti-collision beam 321, the roof and side panel connecting plate 322, etc. The annular part 310 is integrally formed into a one-piece door ring, which has good strength and rigidity performance. Producing at least one structural part 320 of the inner panel of the A-pillar, the inner panel of the upper side beam, or the rear door anti-collision beam 321 at the same time as producing the one-piece door ring 311 significantly improves production efficiency.

[0073] In some embodiments, the number of structural parts 320 produced in combination with the integral door ring 311 can be two or more.

[0074] Please see Figure 3 In some embodiments, providing a blank 100 (S10) includes the following steps:

[0075] S11 provides a single sheet material of uniform thickness.

[0076] S12, the sheet metal is processed to form a first structural member 110 and a second structural member 120, the first structural member 110 having an annular hole 211, and the second structural member 120 connecting to the inner wall of the annular hole 211;

[0077] The process of stamping blank 100 into stamped part 200 (S20) includes the following steps:

[0078] S21, the blank 100 is stamped so that the first structural member 110 forms an annular portion 210 and the second structural member 120 forms a connecting portion 220.

[0079] In this way, the entire sheet material is cut and processed, resulting in ring-shaped parts 310 and structural parts 320 with uniform wall thickness.

[0080] Specifically, in step S11, the sheet material is a steel plate with a relatively uniform thickness. In step S12, the sheet material is cut into a blank 100 with a shape similar to the stamped part 200 by any of the following methods: punching, shearing, sawing, or laser cutting. The first structural member 110 and the second structural member 120 are formed by cutting the same sheet material, located at different positions in the blank 100 and having different shapes. The first structural member 110 is annular, and the second structural member 120 is strip-shaped, square-shaped, round, or near-circular plate-shaped. Both have the same material composition, and the first structural member 110 and the second structural member 120 are connected by a portion of the sheet material retained from the parent material during cutting. The first structural member 110 and the second structural member 120, formed by cutting sheet material of equal thickness, have equal thickness, which is beneficial for the overall stamping of the blank 100.

[0081] Before step S21, a blank 100 of equal thickness can be placed in a heating furnace for heating to austenitize the blank 100. Then, the austenitized blank 100 is placed in a stamping machine to deform the blank 100 under high temperature and pressure. Subsequently, it is held under pressure and cooled to form an annular part 210 and a connecting part 220 connected together.

[0082] In this embodiment, the method of cutting a blank 100 from the same sheet metal and then processing the blank 100 as a whole is beneficial for obtaining an annular part 310 of equal thickness and a structural part 320 of equal thickness to the annular part 310. Furthermore, it involves fewer steps and is simpler to manufacture. The annular part 310 can be an integral door ring 311, and the structural part 320 made from the same sheet metal can be a front door anti-collision beam, a rear door anti-collision beam 321, or other components requiring high strength, rigidity, and impact resistance.

[0083] Please see Figures 4-6 In some embodiments, providing a blank 100 (S10) includes the following steps:

[0084] S13, providing a separate first structural member 110 and a second structural member 120, the first structural member 110 being annular and having an annular hole 211;

[0085] S14, the second structural member 120 is fixed to the inner wall of the annular hole 211 to obtain the blank 100;

[0086] The blank 100 is stamped to form a stamped part 200, including:

[0087] S21, the blank 100 is stamped so that the first structural member 110 forms an annular portion 210 and the second structural member 120 forms a connecting portion 220.

[0088] Thus, by forming the annular part 210 and the connecting part 220 through the separate first structural component 110 and the second structural component 120, it is possible to obtain the annular part 310 and the structural part 320 of different materials at the same time as the blank 100 is stamped into two parts in one go, thereby improving production efficiency and meeting a wider range of production application needs.

[0089] Specifically, in step S13, the first structural component 110 and the second structural component 120 can be formed by separating them from two or more pieces of base material, or they can be formed by separating them separately from the same base material. The first structural component 110 and the second structural component 120 can adopt different separation methods to adapt to a wider variety of automotive parts. Please refer to [link / reference]. Figure 5 and Figure 6 In some embodiments, the separate first structural member 110 and second structural member 120 are provided by the following steps:

[0090] S131, provides two sheet metals.

[0091] S132, one sheet metal is cut to form a first structural component 110, and another sheet metal is cut to form a second structural component 120.

[0092] In the above steps, the blanking of the first structural component 110 and the second structural component 120 can be completed on different machine tools and in different workshops, and the blanking of the first structural component 110 and the second structural component 120 does not interfere with each other.

[0093] In step S14, the second structural component 120 can be strip-shaped or block-shaped. Both ends of the second structural component 120 are welded to the inner wall of the annular hole 211 of the first structural component 110, thereby fixing the first structural component 110 and the second structural component 120 together to form an integral blank 100. Since both the first structural component 110 and the second structural component 120 are thin plate structures, spot welding can be used for welding.

[0094] Please see Figure 7 In some embodiments, the first structural member 110 and the second structural member 120 have different thicknesses.

[0095] Thus, by connecting and fixing the first structural member 110 and the second structural member 120 of unequal thickness and then stamping to form the stamped part 200, ring-shaped parts 310 and structural parts 320 of different materials and wall thicknesses can be formed, thereby meeting the needs of more diverse and complex automotive parts products and improving the practicality of the manufacturing method of this application.

[0096] Specifically, in step S131, two plates of different thicknesses are provided. In step S132, the two plates are formed into a first structural member 110 and a second structural member 120 of different thicknesses by methods such as punching or laser cutting. Generally speaking, the strength of steel plates increases with the increase of thickness. The annular part 310 formed by the first structural member 110 is an integral door ring 311, which has high strength requirements. The structural part 320 formed by the second structural member 120 can be a top cover and side panel connecting plate 322, an inner plate of the upper beam, etc., which has lower strength requirements. The thickness of the first structural member 110 can be greater than the thickness of the second structural member 120.

[0097] Please see Figure 8 and Figure 9 In some embodiments, the first structural member 110 is formed by the following steps:

[0098] S133 provides multiple separate sub-components 111;

[0099] S134, the multiple separate sub-components 111 are fixedly connected end to end to form the first structural component 110.

[0100] Thus, by forming the first structural member 110 through the separate sub-components 111, an annular part 310 with a greater difference in wall thickness can be obtained, thereby satisfying the different thickness designs and strength requirements of the annular part 310 at different locations.

[0101] Specifically, in step S133, the sub-component 111 can be formed by punching or laser cutting from the same sheet metal, or it can be formed from multiple different sheets metal. The multiple sub-components 111 can be of equal thickness or have different thicknesses.

[0102] In step S134, the ends of multiple sub-components 111 are sequentially laser-welded to form a first structural component 110. A weld 112 is formed between two connected sub-components 111. Each sub-component 111 may include a corner segment of the first structural component 110, thereby avoiding the weld 112 appearing at the corner and improving the overall strength of the first structural component 110.

[0103] In this embodiment, the second structural member 120 and the buffer structure 130 are formed separately from another sheet material.

[0104] Please see Figure 3 , Figure 6 and Figure 9 In some embodiments, the manufacturing method further includes:

[0105] A buffer structure 130 is formed at the connection between the first structural member 110 and the second structural member 120.

[0106] Thus, the first structural member 110 and the second structural member 120 are connected into an integral blank 100 by the buffer structure 130, so that the buffer structure 130 can provide a buffer area during the stamping process, making it difficult for the first structural member 110 and the second structural member 120 to break apart, forming an integral stamped part 200.

[0107] Specifically, the buffer structure 130 is a bent thin strip, with one end connected to the first structural member 110 and the other end connected to the second structural member 120. The blank 100 includes the first structural member 110, the buffer structure 130, and the second structural member 120.

[0108] Combination Figure 2 In step S12, a whole sheet is processed to form a first structural component 110, a buffer structure 130 and a second structural component 120. The first structural component 110 and the second structural component 120 are connected by the buffer structure 130. The material and thickness of the buffer structure 130 are the same as those of the first structural component 110 and the second structural component 120.

[0109] Combination Figure 5In step S132, two different sheet materials are provided. One sheet material is cut to form a first structural member 110 and a buffer structure 130 connected to the first structural member 110. The other sheet material is cut to form a second structural member 120. One end of the buffer structure 130 is connected to the inner wall of the annular hole 211 of the first structural member 110, and the other end is away from the first structural member 110. A welding area 131 is provided at the end of the buffer structure 130 away from the first structural member 110. There are two buffer structures 130 connected to the first structural member 110, and the area of ​​the welding area 131 on each buffer structure 130 can be 35mm*25mm.

[0110] Combination Figure 8 In step S134, the first structural member 110 is formed by connecting multiple sub-components 111 head-to-head, and the second structural member 120 has two buffer structures 130 formed at each end. A welding area 131 is formed at the end of the buffer structure 130 away from the second structural member 120, and the area of ​​the welding area 131 can be 35mm*25mm.

[0111] In step S14, as Figure 6 In the illustrated embodiment, the buffer structure 130 is formed together with the first structural member 110. The two ends of the second structural member 120 are spot-welded to the welding areas 131 of the two buffer structures 130, respectively, so that the second structural member 120 is fixed inside the annular hole 211 and connected with the first structural member 110 to form an integral blank 100. In such a case... Figure 9 In the illustrated embodiment, the buffer structure 130 and the second structural member 120 are formed together by blanking. The buffer structures 130 at both ends of the second structural member 120 are spot-welded at two points on the welding area 131 and the inner wall of the annular hole 211 of the first structural member 110, respectively, so that the second structural member 120 and the buffer structure 130 are fixed inside the annular hole 211, forming an integral blank 100. Figure 7 As shown, solder joint 132 is selected in the welding area 131.

[0112] In step S20, the blank 100 is stamped to form an integral annular portion 210 and connecting portion 220. The annular portion 210 and connecting portion 220 are connected together by a buffer structure 130. During the stamping process, the annular portion 210 and connecting portion 220 deform, and some material flows into the buffer structure 130. Thus, the buffer structure 130 can ensure that the annular portion 210 and connecting portion 220 are stamped as a single unit. The number of bends on the buffer structure 130 can match the amount of material flowing into the buffer structure 130 during the stamping process.

[0113] In step S30, the connection between the buffer structure 130 and the annular portion 210 and the connecting portion 220 is cut to separate the annular portion 210 and the connecting portion 220, so as to form an annular part 310 and a structural part 320 with clear edges and complete structure.

[0114] Please see Figure 10 In some embodiments, the manufacturing method further includes the following steps:

[0115] S40, heat-treat the billet 100.

[0116] Thus, heating the blank 100 can yield blanks 100 with different compositions, thereby meeting the performance requirements of the ring-shaped part 310 and the structural part 320 in terms of hardness, strength, and rigidity, and is also beneficial for the blank 100 to be fully deformed and shaped during the stamping process.

[0117] Specifically, the billet 100 can be formed by blanking a steel plate. Heating the billet 100 in a furnace can alter its metallographic structure, thereby improving its plasticity, strength, or stiffness. It should be noted that step S40 is performed before step S30.

[0118] Please see Figure 12 In some embodiments, heat treatment of the blank 100 (S40) includes the following steps:

[0119] S41, heat the billet 100 until it becomes austenitic.

[0120] Thus, by heating the billet 100 to austenitize it, the rigidity and strength of the billet 100 are enhanced, thereby improving the mechanical properties of the final formed ring-shaped part 310 and structural part 320.

[0121] Specifically, in step S41, the billet 100 is placed in a heating furnace and heated until the temperature of the billet 100 reaches above the eutectoid temperature, so that the crystal structure of the billet 100 is transformed into austenite.

[0122] The heated blank 100 can be removed from the heating furnace by a robotic arm and transferred into a stamping die for stamping. After holding the pressure and cooling, a stamped part 200 is formed. Stamping the high-temperature blank 100 and holding the pressure and cooling it helps to improve the strength and rigidity of the blank 100, so as to obtain a ring-shaped part 310 (integrated door ring 311) with good impact resistance, ensuring the safety of passengers.

[0123] Please see Figure 3 and Figure 12In some embodiments, separating the annular portion 210 from the connecting portion 220 to form an annular part 310 and the connecting portion 220 to form a structural part 320 (S30) includes the following steps:

[0124] S31, laser cutting of stamped part 200 to form ring-shaped part 310, structural part 320 and scrap;

[0125] S32, Remove excess material.

[0126] Thus, by laser cutting to separate the annular portion 210, the connecting portion 220, and the buffer structure 130, a ring-shaped part 310 and a structural part 320 with clear and complete edges are obtained.

[0127] Specifically, in step S31, the cooled stamped part 200 is removed, and the connection between the connecting part 220 and the buffer structure 130 is cut along the outer contour line of the connecting part 220. Similarly, the connection between the annular part 210 and the buffer structure 130 is cut along the inner contour line of the annular part 210, thereby forming an annular part 310 from the annular part 210, a structural part 320 from the connecting part 220, and excess material from the buffer structure 130. In step S31, the contour edges and through holes of the annular part 310 and the structural part 320 are laser-cut to complete the trimming and punching process.

[0128] In step S32, the laser-cut parts can be screened by shape or quality, retaining the annular part 310 and the structural part 320 and removing the excess material. The excess material is usually disposed of in a waste pool.

[0129] Please see Figures 13-16 The automotive parts described in this application are manufactured using the manufacturing method of any of the above embodiments.

[0130] Specifically, the ring-shaped part 310 can be an integrated door ring 311 used for the left and right side panels of the vehicle 1000, and the structural part 320 can be the inner panel of the A-pillar, the inner panel of the upper side beam, the rear door anti-collision beam 321, the roof and side panel connecting plate 322, etc. The combination of the structural part 320 and the integrated door ring 311 significantly improves the production efficiency of automotive parts.

[0131] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with the described embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A manufacturing method for manufacturing automotive parts, characterized in that, The manufacturing method includes: A blank is provided; wherein a whole sheet is provided; the sheet is punched or laser-cut to form a first structural member and a second structural member, and a buffer structure is formed at the connection between the first structural member and the second structural member, the buffer structure being formed as a bent thin strip, the first structural member having an annular hole, and the second structural member being connected to the inner wall of the annular hole; The blank is stamped to form a stamped part, the stamped part including an integrally formed annular portion and a connecting portion, the annular portion having an annular hole, and the connecting portion connecting to the inner wall of the annular hole; The annular portion is separated from the connecting portion to form an annular part, which is an integral door ring used for the left and right side panels of a vehicle, and the connecting portion forms a structural part.

2. The manufacturing method according to claim 1, characterized in that, The plate material is of uniform thickness.

3. The manufacturing method according to claim 1, characterized in that, The first structural component and the second structural component have different thicknesses.

4. The manufacturing method according to claim 1, characterized in that, The first structural member is formed by the following steps: Provides multiple separate sub-components; The multiple separate sub-components are fixedly connected end to end to form the first structural member.

5. The manufacturing method according to claim 1, characterized in that, The manufacturing method includes: The blank is subjected to heat treatment.

6. The manufacturing method according to claim 5, characterized in that, The heating treatment of the billet includes: The billet is heated until it becomes austenitic.

7. The manufacturing method according to claim 1, characterized in that, The step of separating the annular portion from the connecting portion to form an annular part and the connecting portion to form a structural part includes: The stamped part is laser-cut to form the annular part, the structural part, and the remaining material; Remove the remaining material.

8. An automotive component, characterized in that, The automotive parts are manufactured using the manufacturing method described in any one of claims 1-7.

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