Machining method of hub cover plate, hub cover plate and automobile hub

Abstract

The invention provides a machining method of a hub cover plate, the hub cover plate and an automobile hub, and relates to the technical field of automobile part manufacturing, the machining method of the hub cover plate comprises the steps that a plate is placed in a drawing die for drawing operation, and a curved-surface blank is obtained; the curved-surface blank is placed in a trimming die to be subjected to trimming operation, and a first blank with a to-be-flanged structure and a clamping jaw structure is obtained; the first blank is placed in a flanging die to be subjected to flanging operation on the to-be-flanged structure, and a second blank is obtained; the second blank is placed in a trimming die to be subjected to trimming operation, and a third blank is obtained; and the third blank is placed in a clamping jaw bending die to conduct bending operation on the clamping jaw structure, and a hub cover plate forming piece is obtained. Compared with the prior art, the machining method of the hub cover plate has the advantages that the plate is machined step by step in different dies, so that the final hub cover plate not only has an attractive appearance, but also can meet the standard of an A-level curved surface, and the technical problems existing in a manual stamping process are solved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts manufacturing, and in particular to a method for processing a hub cover, a hub cover and an automobile wheel hub. Background Art

[0002] The hub cover, commonly known as the hub cap or hub center cover, is an important part of the hub of the car. At present, some automobile manufacturers usually design a curved surface on the hub cover to improve the beauty of the hub cover, and the curved surface meets the standard of Class A curved surface. Among them, high-quality Class A curved hub cover can make the car look more upscale and refined, and the reasonable curved surface design can help the tire maintain better stability when turning and driving at high speed.

[0003] For most automobile manufacturing companies, the process of automobile parts is mainly carried out by workers using stamping equipment on manual lines, which has technical problems such as low degree of automation, low efficiency and high labor intensity.

[0004] More importantly, the wheel hub cover with Class A curved surface has higher requirements for molding. Class A curved surface requires a smooth and continuous surface without obvious unevenness or edges and corners, and also needs to ensure the continuity and smoothness of the curved surface. It is difficult to produce a wheel hub cover that meets Class A curved surface standards in one go with the traditional manual stamping process. This not only increases production costs, but may also result in a large amount of waste, affecting production efficiency and product quality.

[0005] In addition, due to the lack of standardized production processes, there may be large differences between products produced by different batches or different workers, making it difficult to ensure product consistency. Summary of the invention

[0006] The problem to be solved by the present invention is: how to improve the production efficiency of a hub cover with a Class A curved surface.

[0007] The present invention provides a method for processing a hub cover, comprising:

[0008] Placing the sheet material in a drawing die for drawing to obtain a curved surface blank;

[0009] Placing the curved surface blank in a trimming die to perform a trimming operation to obtain a first blank having a structure to be flanging and a claw structure;

[0010] Placing the first blank in a flanging die to perform flanging operation on the structure to be flanging to obtain a second blank;

[0011] Placing the second blank in a trimming die to perform trimming operations to obtain a third blank;

[0012] The third blank is placed in a folding claw mold to perform a bending operation on the claw structure to obtain a hub cover molded part.

[0013] Compared with the prior art, the processing method of a hub cover provided by the present invention has but is not limited to the following beneficial effects:

[0014] The processing method of the hub cover plate of the present invention,

[0015] Optionally, before placing the sheet material in the drawing die for drawing, the processing method of the hub cover plate further comprises:

[0016] The drawing die is manufactured according to design requirements, and the surface of the drawing die is polished.

[0017] Optionally, before placing the first blank in a flanging die to perform a flanging operation on the structure to be flanging, the method for processing the hub cover plate further includes:

[0018] The first blank is placed on a cleaning jig, and the surface of the first blank is cleaned by high-pressure gas.

[0019] Optionally, placing the second blank in a trimming die for trimming includes:

[0020] Using the first trimming die to perform the first trimming;

[0021] The second trimming die is used to perform the second trimming.

[0022] Optionally, placing the third blank in a folding claw mold to perform a bending operation on the claw structure includes:

[0023] Using a first folding claw mold, bending a preset number of the claw structures;

[0024] A second folding claw mold is used to bend the remaining number of the claw structures.

[0025] Optionally, before placing the second blank in a trimming die for trimming, the hub cover processing method further includes:

[0026] A checking fixture is used to check whether the curved surface on the second blank meets the Class A curved surface standard.

[0027] Optionally, after placing the third blank in a folding claw mold to perform a bending operation on the claw structure to obtain a hub cover plate formed part, the hub cover plate processing method further includes:

[0028] The hub cover plate forming part is placed on a laser coding jig, and the surface of the hub cover plate forming part is coded and engraved by a laser coding machine.

[0029] Optionally, the sheet material is an aluminum alloy sheet material.

[0030] In addition, the present invention also provides a hub cover plate, which is manufactured based on the hub cover plate processing method as described above.

[0031] Since the technical improvement and technical effect of the hub cover are the same as the processing method of the hub cover, the technical effect of the hub cover will not be described in detail.

[0032] In addition, the present invention also provides an automobile wheel hub, comprising the wheel hub cover as described above.

[0033] Since the technical improvement and technical effect of the automobile wheel hub are the same as those of the wheel hub cover, the technical effect of the automobile wheel hub will not be described in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a flow chart of a method for processing a hub cover according to an embodiment of the present invention;

[0035] Figure 2 A schematic diagram of the structure of a sheet material according to an embodiment of the present invention;

[0036] Figure 3 It is a schematic structural diagram of a curved surface blank according to an embodiment of the present invention;

[0037] Figure 4 is a schematic structural diagram of a first blank according to an embodiment of the present invention;

[0038] Figure 5 is a schematic structural diagram of a second blank according to an embodiment of the present invention;

[0039] Figure 6 The structure of the third blank of the embodiment of the present invention is schematically shown. Figure 1 ;

[0040] Figure 7 The structure of the third blank of the embodiment of the present invention is schematically shown. Figure 2 ;

[0041] Figure 8 This is a production line diagram of a hub cover according to an embodiment of the present invention.

[0042] Description of reference numerals:

[0043] 1. Sheet material; 2. First blank; 3. Structure to be flanging; 4. Claw structure; 5. Second blank; 6. Third blank; a. Drawing die; b. Trimming die; c. Flanging die; d. Trimming die; e. Folding claw die; f. Cleaning jig; g. Laser coding jig. DETAILED DESCRIPTION

[0044] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0045] In the description of the present invention, the directions or positional relationships indicated by “up”, “down”, “left”, “right”, “top”, “bottom”, “front”, “back”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention. They do not indicate or imply that the device referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the scope of protection of the present invention.

[0046] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the description of this specification, the description with reference to the terms "embodiment", "one embodiment" and "one implementation" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or implementation are included in at least one embodiment or implementation of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or implementation. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or implementations in a suitable manner.

[0048] like Figures 1 to 8 As shown, the processing method of the hub cover plate of the embodiment of the present invention comprises:

[0049] S1, placing the sheet material 1 in the drawing die a for drawing operation to obtain a curved surface blank;

[0050] S2, placing the curved surface blank in a trimming die b for trimming operation to obtain a first blank 2 having a structure to be flanging 3 and a claw structure 4;

[0051] S3, placing the first blank 2 in a flanging die c to perform a flanging operation on the structure to be flanging 3 to obtain a second blank 5;

[0052] S4, placing the second blank 5 in a trimming die d for trimming to obtain a third blank 6;

[0053] S5, placing the third blank 6 in the folding claw mold e, and performing a bending operation on the claw structure 4 to obtain a hub cover molded part.

[0054] In this embodiment, combined with the attached Figure 1 To Attachment Figure 8 As shown, the present invention gradually solves the problems of low automation, low efficiency and high labor intensity in the manual stamping process through a multi-step processing method. First, a drawing die a is used to draw the sheet 1 (attached Figure 2 The drawing operation is performed on the hub cover plate to form the curved surface part, ensuring that the curved surface blank that meets the Class A curved surface standard is obtained (see Appendix Figure 3 Then, the blank (curved blank) is trimmed by a trimming die b to form a first blank 2 (see FIG. 1 ) having a structure to be flanging 3 and a claw structure 4. Figure 4 As shown). Next, the flanging die c is used to perform flanging operation on the to-be-flanged structure 3 to ensure accurate forming of the blank. Afterwards, the trimming die d is used to perform trimming operation on the blank (second blank 5) to obtain a third blank 6 that meets the requirements. Finally, the folding claw die e is used to perform bending operation on the claw structure 4 to complete the forming of the hub cover.

[0055] Combined with Figure 8 As shown, the present invention can realize the automated production of hub cover plates through a multi-step processing method, that is, the production line can have multiple stations, each of which corresponds to a process. For example, the sheet 1 is drawn by the drawing die a at the first station, and then the blank can be transferred to the trimming die b at the second station through a mechanical gripper for trimming operation until all subsequent processes are completed. In this way, through the above method, the sheet is gradually processed in different molds, so that the final hub cover plate not only has a beautiful appearance, but also meets the standards of Class A curved surface, improves the forming accuracy and surface quality of the hub cover plate, solves the technical problems existing in the manual stamping process, realizes automated production, improves production efficiency, and reduces labor intensity.

[0056] Optionally, before placing the sheet material 1 in the drawing die a for drawing operation, the processing method of the hub cover plate further includes:

[0057] The drawing die a is manufactured according to design requirements, and the surface of the drawing die a is polished.

[0058] In this embodiment, by performing a polishing treatment on the surface of the drawing die a, the surface of the die is ensured to be smooth, thereby improving the forming quality of the sheet during the drawing process. The polishing treatment can reduce surface defects of the sheet, avoid scratches and indentations, and ensure that the surface quality of the final product meets the Class A curved surface standard. The manufacturing of the drawing die a needs to be carried out according to the design requirements to ensure the accuracy of the shape and size of the die. The polishing treatment can be performed by mechanical polishing, chemical polishing or electrochemical polishing to achieve a mirror effect on the surface of the die. The polished die can effectively reduce friction and resistance and improve the stability and consistency of the drawing operation.

[0059] Optionally, before placing the first blank 2 in the flanging die c to perform a flanging operation on the structure to be flanged 3, the processing method of the hub cover plate further includes:

[0060] The first blank 2 is placed on a cleaning jig f, and the surface of the first blank 2 is cleaned by high-pressure gas.

[0061] In this embodiment, a cleaning step is added before the flanging operation is performed on the flanging structure 3, that is, the first blank 2 is placed on the cleaning jig f, and the surface of the first blank 2 is purged by high-pressure gas. The introduction of this technical means is intended to ensure the cleanliness of the surface of the first blank 2, thereby improving the quality of subsequent flanging operations. The cleaning jig f can be a specially designed fixture for fixing and supporting the first blank 2. High-pressure gas can be evenly sprayed onto the surface of the first blank 2 through a nozzle to remove debris on the surface. As a result, the surface of the first blank 2 after cleaning is cleaner, avoiding the surface from being crushed by the subsequent process.

[0062] Optionally, placing the second blank 5 in a trimming die d for trimming includes:

[0063] Using the first trimming die to perform the first trimming;

[0064] The second trimming die is used to perform the second trimming.

[0065] In this embodiment, combined with the attached Figure 5 As shown in FIG. 1 , there are two symmetrical structures 3 to be flanged. After the flange process, there will be excess waste on the second blank 5 obtained. Specifically, at the positions of the two structures 3 to be flanged, the excess waste needs to be cut off. Thus, the second blank 5 is first placed in the first trimming die, and the excess waste at the position of one of the structures 3 to be flanged is cut off (as shown in FIG. 1 ). Figure 6 Then put it into the second trimming die to cut off the excess waste at the position of another structure 3 to be flanging (as shown in the attached Figure 7 As shown), we finally get the attached Figure 7 The third blank 6 is shown.

[0066] Optionally, placing the third blank 6 in a folding claw mold e to perform a bending operation on the claw structure 4 includes:

[0067] Using a first folding claw mold, bending a preset number of the claw structures 4;

[0068] The second folding claw mold is used to bend the remaining number of the claw structures 4.

[0069] In this embodiment, combined with the attached Figure 7 As shown, the periphery of the third blank 6 has a plurality of claw structures 4, and it is impossible to bend all the claw structures 4 at once using only one folding claw mold. In this way, different folding claw molds (first folding claw mold, second folding claw mold) are used to bend the preset number and the remaining number of claw structures 4 respectively, thereby completing the bending of all the claw structures 4. Specifically, the first folding claw mold can be preset to bend a specific number of claw structures 4 to ensure the consistency and accuracy of these claw structures 4 during the bending process. The second folding claw mold is used to bend the remaining claw structures to further ensure the overall quality of the molded part.

[0070] Optionally, before placing the second blank 5 in the trimming die d for trimming, the processing method of the hub cover plate further includes:

[0071] A checking fixture is used to check whether the curved surface on the second blank 5 meets the Class A curved surface standard.

[0072] In this embodiment, before placing the second blank 5 in the trimming die d for trimming operation, a checker is used to check whether the curved surface on the second blank 5 meets the Class A curved surface standard. If the curved surface meets the standard, the second blank 5 is placed in the trimming die for trimming operation to obtain the third blank 6. Finally, the third blank 6 is placed in the folding claw die e to bend the claw structure 4 to obtain the hub cover plate molded part. In this process, it is a key step to use a checker to check whether the curved surface on the second blank 5 meets the Class A curved surface standard. The Class A curved surface standard means that the smoothness and precision of the curved surface meet higher requirements, which has an important impact on the beauty and functionality of the hub cover. By using a checker, it can be ensured that the curved surface of each second blank 5 meets the design requirements, thereby ensuring that the final hub cover plate molded part has consistent high quality. There are many specific implementation methods for the checker. For example, a three-coordinate measuring machine can be used to measure the curved surface of the second blank 5, or a special curved surface detection fixture can be used for rapid detection. Regardless of the method used, the key is to be able to accurately determine whether the curved surface of the second blank 5 meets the Class A curved surface standard.

[0073] Optionally, after placing the third blank 6 in a folding claw mold e to bend the claw structure 4 to obtain a hub cover plate formed part, the hub cover plate processing method further includes:

[0074] The hub cover plate molded part is placed on a laser coding jig g, and the surface of the hub cover plate molded part is coded and engraved by a laser coding machine.

[0075] In this embodiment, after the hub cover plate forming part is completed, a laser coding step is added to achieve coding and engraving on the surface of the hub cover plate forming part. By using a laser coding machine to code and engrave on the surface of the hub cover plate forming part, high-precision and high-speed marking can be achieved, ensuring the clarity and durability of the marking. The laser coding machine can perform precise engraving operations on the surface of the hub cover plate forming part according to a preset pattern or text. The laser coding machine can use a fiber laser to improve the efficiency and quality of coding.

[0076] Optionally, the sheet material 1 is an aluminum alloy sheet material.

[0077] In this embodiment, the aluminum alloy sheet has good processing performance and corrosion resistance, and can meet the design requirements of the hub cover, especially for the hub cover with a Class A curved surface, the aluminum alloy material can provide good surface quality and strength. In addition, the aluminum alloy sheet can better adapt to the operation of various molds in the subsequent processing process to ensure the molding quality.

[0078] In addition, the present invention also provides a hub cover plate, which is manufactured based on the hub cover plate processing method as described above.

[0079] Since the technical improvement and technical effect of the hub cover are the same as the processing method of the hub cover, the technical effect of the hub cover will not be described in detail.

[0080] In addition, the present invention also provides an automobile wheel hub, comprising the wheel hub cover as described above.

[0081] Since the technical improvement and technical effect of the automobile wheel hub are the same as those of the wheel hub cover, the technical effect of the automobile wheel hub will not be described in detail.

[0082] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0083] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A method for processing a hub cover, characterized in that: include: Placing a sheet material (1) in a drawing die (a) for drawing to obtain a curved blank; Placing the curved surface blank in a trimming die (b) for trimming to obtain a first blank (2) having a structure to be flanging (3) and a claw structure (4); Placing the first blank (2) in a flanging die (c) to perform a flanging operation on the structure to be flanging (3) to obtain a second blank (5); Placing the second blank (5) in a trimming die (d) for trimming to obtain a third blank (6); The third blank (6) is placed in a folding claw mold (e) to perform a bending operation on the claw structure (4) to obtain a hub cover molded part.

2. The method for processing a hub cover according to claim 1, characterized in that: Before placing the sheet material (1) in the drawing die (a) for drawing, the hub cover processing method further comprises: The drawing die (a) is manufactured according to design requirements, and the surface of the drawing die (a) is polished.

3. The method for processing a hub cover according to claim 1, characterized in that: Before placing the first blank (2) in the flanging die (c) to perform a flanging operation on the structure to be flanged (3), the processing method of the hub cover plate further comprises: The first blank (2) is placed on a cleaning jig (f), and the surface of the first blank (2) is cleaned by blowing with high-pressure gas.

4. The method for processing a hub cover according to claim 1, characterized in that: The step of placing the second blank (5) in a trimming die (d) for trimming comprises: Using the first trimming die to perform the first trimming; The second trimming die is used to perform the second trimming.

5. The method for processing a hub cover according to claim 1, characterized in that: The step of placing the third blank (6) in the folding claw mold (e) to bend the claw structure (4) comprises: Using a first folding claw mold to bend a preset number of the claw structures (4); A second folding claw mold is used to bend the remaining number of the claw structures (4).

6. The method for processing a hub cover according to claim 1, characterized in that: Before placing the second blank (5) in the trimming die (d) for trimming, the hub cover processing method further comprises: A checking fixture is used to check whether the curved surface on the second blank (5) meets the Class A curved surface standard.

7. The method for processing a hub cover according to claim 1, characterized in that: After placing the third blank (6) in the folding claw mold (e) to perform a bending operation on the claw structure (4) to obtain a hub cover plate formed part, the hub cover plate processing method further comprises: The hub cover plate molded part is placed on a laser coding jig (g), and the surface of the hub cover plate molded part is coded and engraved by a laser coding machine.

8. The method for processing a hub cover according to claim 1, characterized in that: The sheet material (1) is an aluminum alloy sheet material.

9. A hub cover, characterized in that: The hub cover is manufactured based on the processing method of any one of claims 1 to 8.

10. An automobile wheel hub, characterized in that: Comprising the hub cover as claimed in claim 9.

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