Method of manufacturing a wheel rim and wheel rim manufacturing die

Abstract

The application relates to a rim manufacturing method and a rim manufacturing die. The rim manufacturing method comprises the following steps: providing a plurality of rim semi-products arranged side by side in an axial direction; and simultaneously forming assembly holes for assembling spokes on side circumferential walls of at least two of the rim semi-products until the side circumferential walls of all the rim semi-products are provided with a plurality of the assembly holes arranged in a circumferential direction. The rim manufacturing die comprises a first half die and a second half die. The first half die comprises a first body configured to abut against an inner side circumferential wall of the rim semi-product. The second half die comprises a second body and at least two spaced-apart punch rods connected to the second body. The second half die is configured to punch the side circumferential wall of the rim semi-product from the outside to the inside along a radial direction of the rim semi-product to form the assembly hole.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a rim manufacturing method and a rim manufacturing die. BACKGROUND

[0002] A wheel generally comprises a hub, a rim and spokes, the spokes being connected between the hub and the rim. In manufacturing the rim, a strip-shaped extruded profile is generally curled to form a rim semi-finished product, and after the rim semi-finished product is curled, recesses adapted to spoke caps are arranged on the ring wall of the rim semi-finished product, and spoke holes for assembling spoke bodies are arranged on the recess structure formed with the recesses.

[0003] In the conventional rim manufacturing, after a single rim semi-finished product is manufactured, the single rim semi-finished product is positioned on a production machine tool by a positioning device, and special equipment is used to manufacture the recesses and the spoke holes on the rim semi-finished product until the whole circle of recesses and spoke holes are manufactured.

[0004] However, the conventional rim manufacturing is to form and manufacture a certain rim alone, and when the next rim is manufactured, the previous rim needs to be dismounted from the positioning device, which has the problem of low manufacturing efficiency. SUMMARY

[0005] Therefore, it is necessary to provide a rim manufacturing method and a rim manufacturing die in view of the above problems.

[0006] The present application provides a rim manufacturing method, which comprises the following steps:

[0007] providing a plurality of rim semi-finished products arranged side by side in the axial direction;

[0008] simultaneously arranging assembling holes for assembling spokes on the side circumferential walls of at least two of the rim semi-finished products until the side circumferential walls of all the rim semi-finished products are arranged with a plurality of the assembling holes in the circumferential direction.

[0009] The conventional rim manufacturing is to position a single rim semi-finished product on a production machine tool by a positioning device, and special equipment is used to manufacture the recesses and the spoke holes on the rim semi-finished product until the whole circle of recesses and spoke holes are manufactured. When another rim is manufactured subsequently, the previous rim needs to be dismounted from the positioning device, the hole needs to be repositioned, and only one rim can be processed each time.

[0010] The rim manufacturing method of the present application can realize batch production of the rims, and when a plurality of rims are manufactured, only one positioning is needed, the spoke assembling holes can be simultaneously arranged on at least two rim semi-finished products until the assembling holes are arranged on all the rim semi-finished products, the manufacturing efficiency is improved, and the manufacturing cost is reduced.

[0011] In one embodiment, the plurality of axially-arranged rim blanks are a plurality of independent rim blanks formed by coiling a strip-shaped profile material, and the plurality of rim blanks are arranged axially in parallel. In such an embodiment, it can be considered that each rim blank is prepared separately, and then the plurality of independent rim blanks are arranged axially in parallel for further processing.

[0012] In one embodiment, the step of providing a plurality of rim blanks arranged in parallel includes: the plurality of axially-arranged rim blanks are a plurality of sequentially connected rim blanks formed by coiling a strip-shaped profile material, and the plurality of rim blanks are arranged axially in parallel. In such an embodiment, it can be considered that the plurality of rim blanks are sequentially connected in a substantially spiral spring shape, and the plurality of rim blanks are still not separated.

[0013] In one embodiment, the rim manufacturing method further includes the step of: cutting any two adjacent sequentially connected rim blanks to form a plurality of independent rim blanks. This step can be performed before or after forming the assembly holes.

[0014] In one embodiment, when the assembly holes are formed, the assembly holes are formed simultaneously on all the rim blanks in the axial direction of the rim blanks; and / or, when the assembly holes are formed, at least two assembly holes are formed simultaneously on all the rim blanks in the circumferential direction of the rim blanks. In this embodiment, the assembly holes can be formed simultaneously on all the rim blanks, and each rim blank can also have at least two assembly holes formed simultaneously in the circumferential direction, thereby further improving manufacturing efficiency.

[0015] In one embodiment, before forming the assembly holes, the method further includes: forming a recess structure on the side wall of at least two rim blanks, and the assembly holes are formed on the recess structure.

[0016] In one embodiment, the assembly hole includes a first assembly hole and a second assembly hole that are in communication with each other, the second assembly hole is arranged inwardly relative to the first assembly hole in the radial direction of the rim blank, the inner diameter of the end of the first assembly hole away from the second assembly hole is greater than the inner diameter of the end of the first assembly hole close to the second assembly hole; wherein, from the junction of the first assembly hole and the second assembly hole, along the axial direction of the first assembly hole towards the direction away from the second assembly hole, the inner wall of the first assembly hole is in the shape of a smooth transition circular arc.

[0017] In one of the embodiments, before the assembly holes are formed in the side walls of the wheel rim blanks, the method further comprises: simultaneously forming back holes in the outer side walls of the at least two wheel rim blanks; and wherein the assembly holes are formed in the inner side walls of the wheel rim blanks along the back holes. That is, after the back holes are formed, the assembly holes are formed in the inner side walls of the wheel rim blanks along the back holes.

[0018] When the wheel rim to be manufactured is a double-layer hollow structure, the side walls of the wheel rim blank include an inner side wall and an outer side wall arranged in a radial direction, and the back holes are formed in the outer side walls of the wheel rim blanks, and then the assembly holes are formed in the inner side walls of the wheel rim blanks along the back holes by the mold. The back holes are formed in the same way as the assembly holes, and the back holes can be simultaneously formed in the outer side walls of a plurality of wheel rim blanks arranged side by side, thereby improving the manufacturing efficiency and reducing the manufacturing cost. It should be noted that in other embodiments, if the wheel rim to be manufactured is a single-layer structure, the back holes do not need to be formed, that is, the step of forming the back holes can be omitted.

[0019] In one of the embodiments, in the radial direction of the wheel rim blank, each assembly hole is opposite to each back hole, and the assembly hole is arranged inward relative to the back hole.

[0020] In one of the embodiments, when the back holes are formed, the back holes are simultaneously formed in all the wheel rim blanks along the axial direction of the wheel rim blanks; and / or when the back holes are formed, at least two back holes are simultaneously formed in all the wheel rim blanks along the circumferential direction of the wheel rim blanks.

[0021] The present application also relates to a wheel rim manufacturing mold used for the wheel rim manufacturing method according to any one of the above embodiments, which comprises:

[0022] a first half mold comprising a first body configured to abut against the inner side wall of the wheel rim blank;

[0023] a second half mold comprising a second body and at least two spaced-apart punch rods connected to the second body, the second half mold being configured to punch the side wall of the wheel rim blank from outside to inside in the radial direction of the wheel rim blank to form the assembly hole.

[0024] The wheel rim manufacturing mold is used for the wheel rim manufacturing method according to any one of the above embodiments, and therefore, the wheel rim manufacturing mold also has at least the following beneficial effects: the batch production of the wheel rim can be realized, and when a plurality of wheel rims are manufactured, only one positioning is needed, and then a plurality of punch rods can be used to simultaneously form the spoke assembly holes in the at least two wheel rim blanks until the assembly holes are formed in all the wheel rim blanks, thereby improving the manufacturing efficiency and reducing the manufacturing cost.

[0025] In one embodiment, the rim manufacturing mold further includes a back hole cutting body and at least two back hole cutting tools. All of the back hole cutting tools are located on the same side of the back hole cutting body and are rotatably connected to the back hole cutting body. The back hole cutting tools are used to cut the outer peripheral wall of the rim semi-finished product to form the back hole. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A schematic flowchart illustrating a wheel rim manufacturing method according to an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the structure of a wheel rim manufacturing mold provided in one embodiment of the present invention, wherein each wheel rim semi-finished product is set independently;

[0029] Figure 3 Another structural diagram of a wheel rim manufacturing mold provided in one embodiment of the present invention is shown, wherein multiple wheel rim semi-finished products are connected in sequence;

[0030] Figure 4 Another structural diagram of a wheel rim manufacturing mold provided in one embodiment of the present invention;

[0031] Figure 5 A cross-sectional view of a wheel rim manufacturing mold provided in one embodiment of the present invention;

[0032] Figure 6 for Figure 5 Enlarged view of point A in the wheel rim manufacturing mold shown;

[0033] Figure 7 Another enlarged view of a wheel rim manufacturing mold provided in one embodiment of the present invention;

[0034] Figure 8 A cross-sectional view of a double-layer wheel rim semi-finished product with a back hole provided in an embodiment of the present invention;

[0035] Figure 9 A cross-sectional view of a double-layer wheel rim semi-finished product with assembly holes provided in an embodiment of the present invention;

[0036] Figure 10 A schematic diagram of a back hole cutting body and a back hole cutting tool provided in an embodiment of the present invention;

[0037] Figure 11 A schematic view of a second half-mold provided for an embodiment of the present application.

[0038] Reference signs:

[0039] 100, rim manufacturing mold; 10, first half-mold; 11, first body; 111, abutting groove; 112, punching hole; 113, guide hole; 20, second half-mold; 21, second body; 22, punch rod; 221, connecting part; 222, first punching part; 223, second punching part; 224, guide part; 30, back hole cutting body; 40, back hole cutting tool; 200, rim semi-finished product; 300, side peripheral wall; 310, outer side peripheral wall; 320, inner side peripheral wall; 400, dimple structure; 500, assembly hole; 501, first assembly hole; 502, second assembly hole; 600, back hole; X, first direction; Y, second direction. DETAILED DESCRIPTION

[0040] In order to make the above objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below with reference to the drawings. In the following description, a large number of specific details are set forth in order to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the concept of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0041] Reference Figures 1 to 9 In some embodiments, the present application provides a rim manufacturing method, and specifically, the rim formed by the rim manufacturing method can be a bicycle rim. It can be understood that in other embodiments, the rim formed by the rim manufacturing method can also be applied to other vehicles other than bicycles, which are not limited herein.

[0042] The rim manufacturing method comprises the following steps:

[0043] S110, providing a plurality of rim semi-finished products 200 arranged side by side along an axial direction;

[0044] S120, simultaneously opening assembly holes 500 for assembling spokes on the side peripheral walls 300 of at least two of the rim semi-finished products 200.

[0045] In the conventional rim manufacturing, a single rim semi-finished product is positioned on a production machine tool by a positioning device, and special equipment is used to manufacture dimples and spoke holes on the rim semi-finished product until a complete circle of dimples and spoke holes is manufactured. When manufacturing another rim, the previous rim needs to be removed from the positioning device, and the opening needs to be repositioned, and only one rim can be processed each time.

[0046] The wheel rim manufacturing method described above can achieve mass production of wheel rims. When manufacturing multiple wheel rims, only one positioning is required to simultaneously open spoke assembly holes 500 on at least two wheel rim semi-finished products 200 until all wheel rim semi-finished products 200 have been opened with assembly holes 500, thereby improving manufacturing efficiency and reducing manufacturing costs.

[0047] Specifically, step S110, which provides multiple parallel wheel rim semi-finished products 200, includes at least the following two implementation methods. "Multiple" can refer to at least two.

[0048] For example, such as Figure 2 As shown, in the first embodiment, step S110, which provides multiple parallel wheel rim semi-finished products 200, includes: rolling a strip-shaped profile to form multiple independent wheel rim semi-finished products 200, and the multiple wheel rim semi-finished products 200 are arranged side by side along the axial direction. That is, the multiple axially parallel wheel rim semi-finished products 200 are multiple independent wheel rim semi-finished products 200 formed by rolling a strip-shaped profile, and the multiple wheel rim semi-finished products 200 are arranged side by side along the axial direction. The wheel rim is usually in the shape of a closed loop, and the axial direction of the wheel rim semi-finished product 200 can be considered as the direction along the axis of the wheel rim semi-finished product 200. In this type of embodiment, it can be considered that each wheel rim semi-finished product 200 is prepared separately, and then the multiple independent wheel rim semi-finished products 200 are arranged side by side along the axial direction for the next processing and manufacturing step.

[0049] For example, such as Figure 3 and Figure 4 As shown, in the second type of embodiment, step S110, which provides multiple parallel wheel rim semi-finished products 200, includes: rolling a strip-shaped profile to form multiple sequentially connected wheel rim semi-finished products 200, wherein the multiple wheel rim semi-finished products 200 are arranged side-by-side along the axial direction. In this type of embodiment, it can be considered that the multiple wheel rim semi-finished products 200 are sequentially connected in a roughly helical spring shape, and the multiple wheel rim semi-finished products 200 are not yet separated. Specifically, it can be that a strip-shaped aluminum alloy profile is rolled to form at least two wheel rim semi-finished products 200 sequentially connected together.

[0050] Furthermore, in the second embodiment, the rim manufacturing method further includes the following step: cutting any two adjacent sequentially connected rim semi-finished products 200 to form multiple independent rim semi-finished products 200. This step can be performed either before or after the assembly hole 500 is formed. Furthermore, after forming the rim, it can be further processed, such as by grinding and polishing.

[0051] It should be understood that the present application can also use other material profiles to roll the rim blanks 200, and the material type of the profiles is not limited herein. The number of the rim blanks 200 can be two, three, or more, and the number of the rim blanks 200 is not limited herein.

[0052] Specifically, the step S120 of simultaneously drilling the assembly holes 500 for assembling the spokes on the side peripheral walls 300 of at least two of the rim blanks 200 can be considered as simultaneously drilling the assembly holes 500 on at least two of all the rim blanks 200. It should be noted that the side peripheral walls 300 of the rim blanks 200 can be provided with a plurality of assembly holes 500 in the circumferential direction, and the number of the assembly holes 500 can be two, three, or more, and the number of the assembly holes 500 on one rim blank 200 is not limited herein.

[0053] Specifically, as shown in Figure 7 and Figure 9 in some embodiments, the assembly hole 500 includes a first assembly hole 501 and a second assembly hole 502 that are in communication with each other, the second assembly hole 502 is arranged inwardly relative to the first assembly hole 501 along the radial direction of the rim blank 200, the inner diameter of the end of the first assembly hole 501 away from the second assembly hole 502 is greater than the inner diameter of the end of the first assembly hole 501 close to the second assembly hole 502; wherein, from the junction of the first assembly hole 501 and the second assembly hole 502, along the axial direction of the first assembly hole 501, the inner wall of the first assembly hole 501 is in the shape of a smooth transition circular arc in the direction away from the second assembly hole 502. The first assembly hole 501 can assemble a spoke cap of the spoke. The second assembly hole 502 can assemble the main body of the spoke, i.e., allowing the main body of the spoke to pass through the second assembly hole 502.

[0054] As shown in Figure 2 , Figure 3 and Figure 4 in some embodiments, the step S120 of simultaneously drilling the assembly holes 500 for assembling the spokes on the side peripheral walls 300 of at least two of the rim blanks 200 includes:

[0055] When drilling the assembly holes 500, the assembly holes 500 are simultaneously drilled on all the rim blanks 200 along the axial direction of the rim blanks 200;

[0056] And / or, when forming the mounting holes 500, at least two mounting holes 500 are simultaneously formed on all the wheel rim semi-finished products 200 along the circumferential direction. In this embodiment, mounting holes 500 can be formed on all wheel rim semi-finished products 200 at the same time, and each wheel rim semi-finished product 200 can also have at least two mounting holes 500 formed simultaneously along the circumferential direction, thereby further improving manufacturing efficiency.

[0057] In one embodiment, two mounting holes 500 are simultaneously formed on all the semi-finished wheel rims 200 along their circumference. In another embodiment, three mounting holes 500 are simultaneously formed on all the semi-finished wheel rims 200 along their circumference. In yet another embodiment, more than three mounting holes 500 are simultaneously formed on all the semi-finished wheel rims 200 along their circumference.

[0058] It should be noted that the number of assembly holes 500 simultaneously opened on all wheel rim semi-finished products 200 along the circumference of the wheel rim semi-finished product 200 can be the same or different, and is not limited here.

[0059] like Figure 7 As shown, in some embodiments, the step of simultaneously creating mounting holes 500 for assembling spokes on the side peripheral walls 300 of at least two of the rim semi-finished products 200 includes: forming recessed structures 400 on the side peripheral walls 300 of at least two of the rim semi-finished products 200, with the mounting holes 500 formed in the recessed structures 400. By forming the recessed structures 400 on the rim semi-finished products 200, it is convenient to form a first mounting hole 501 for assembling spoke caps and a second mounting hole 502 for assembling spoke bodies.

[0060] It should be understood that in other embodiments, the mounting hole 500 may not be formed on the recessed structure 400, and this application does not limit this. In other words, in a certain embodiment, it can be considered that the recessed structure 400 is not formed on the side tube wall of the rim, that is, the mounting hole 500 is directly formed on the relatively smooth and flat side tube wall.

[0061] like Figures 2 to 8 As shown, in some embodiments, step S110 provides a plurality of parallel rim semi-finished products 200, and simultaneously with step S120, mounting holes 500 for mounting spokes are formed on the side peripheral walls 300 of at least two of the rim semi-finished products 200, and the process also includes:

[0062] Before opening the assembly hole 500 on the parallel wheel rim semi-finished products 200, back holes 600 are simultaneously opened on the outer peripheral walls 310 of at least two of the wheel rim semi-finished products 200.

[0063] The step of drilling the back holes 600 on the outer side circumferential wall 310 of at least two of the rim semi-finished products 200 is repeated until a plurality of the back holes 600 are circumferentially and spacedly arranged on the outer side circumferential wall 310 of all the rim semi-finished products 200.

[0064] The step of drilling the assembly holes 500 on the side circumferential wall 300 of at least two of the rim semi-finished products 200 for assembling the spokes comprises drilling the assembly holes 500 on the inner side circumferential wall 320 of at least two of the rim semi-finished products 200 along the back holes 600.

[0065] In some embodiments, as shown in FIG. 2, each of the assembly holes 500 is opposite to each of the back holes 600 in the radial direction of the rim semi-finished product 200, and the assembly hole 500 is arranged inwardly relative to the back hole 600. Figure 9 In some embodiments, as shown in FIG. 2, each of the assembly holes 500 is opposite to each of the back holes 600 in the radial direction of the rim semi-finished product 200, and the assembly hole 500 is arranged inwardly relative to the back hole 600.

[0066] Figures 6 to 9 In some embodiments, as shown in FIG. 2, each of the assembly holes 500 is opposite to each of the back holes 600 in the radial direction of the rim semi-finished product 200, and the assembly hole 500 is arranged inwardly relative to the back hole 600.

[0067] In some embodiments, as shown in FIG. 2, each of the assembly holes 500 is opposite to each of the back holes 600 in the radial direction of the rim semi-finished product 200, and the assembly hole 500 is arranged inwardly relative to the back hole 600. Figures 2 to 4

[0068] In some embodiments, as shown in FIG. 2, each of the assembly holes 500 is opposite to each of the back holes 600 in the radial direction of the rim semi-finished product 200, and the assembly hole 500 is arranged inwardly relative to the back hole 600.

[0069] In some embodiments, as shown in FIG. 2, each of the assembly holes 500 is opposite to each of the back holes 600 in the radial direction of the rim semi-finished product 200, and the assembly hole 500 is arranged inwardly relative to the back hole 600.

[0070] ​​It should be noted that in some embodiments, after the back holes 600 are first opened on the at least two rim semi-finished products 200, the assembly holes 500 and the back holes 600 can be opened simultaneously in the next working process to improve the working efficiency. In other words, in the next working process, the assembly holes 500 are opened at the positions where the back holes 600 have been opened on the hub semi-finished product, and the back holes 600 are opened at other positions.

[0071] Please refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 10 and Figure 11 The present application also relates to a rim manufacturing mold 100 for applying the rim manufacturing method described in any of the above embodiments, which comprises a first half mold 10 and a second half mold 20 arranged separately, the first half mold 10 comprises a first body 11 which is operable to abut against the inner surface of the rim semi-finished product 200. The second half mold 20 comprises a second body 21 and at least two punch rods 22, all of which are connected to the same side of the second body 21 and arranged in parallel and spaced apart from each other, and the second half mold 20 is operable to punch the side peripheral wall 300 of the rim semi-finished product 200 along the radial direction of the rim semi-finished product 200 from the outside to the inside, so as to form the assembly hole 500, which is formed by the cooperation of the punch rod 22 and the first half mold 10.

[0072] The above-mentioned rim manufacturing mold 100 is used for applying the rim manufacturing method described in any of the above embodiments, and therefore the rim manufacturing mold 100 also at least has the following beneficial effects: batch production of the rim can be realized, and when manufacturing a plurality of rims, only one positioning is needed, and a plurality of punch rods 22 can be used to simultaneously open the spoke assembly holes 500 on the at least two rim semi-finished products 200 until all the rim semi-finished products 200 are opened with the assembly holes 500, thereby improving the manufacturing efficiency and reducing the manufacturing cost.

[0073] Specifically, in some embodiments, the first body 11 and the second body 21 are both cuboid block structures. Of course, in other embodiments, the first body 11 and the second body 21 can also be other shapes, such as cylindrical, etc., and the shape of the first body 11 and the second body 21 is not limited here.

[0074] More specifically, as shown in Figure 7 in some embodiments, the surface of the first body 11 is provided with at least two abutting grooves 111, all of which are arranged in sequence along the axial direction of the rim semi-finished product 200, and the groove wall of one abutting groove 111 abuts against the inner surface of one rim semi-finished product 200.

[0075] For example, in one embodiment, the surface of the first body 11 is provided with six abutment grooves 111. It should be understood that in other embodiments, the surface of the first body 11 can also be provided with other numbers of abutment grooves 111, which are not limited herein.

[0076] Referring to Figure 3 , Figure 4 and Figure 5 , all the punches 22 include at least two rows arranged along the first direction X and at least two columns arranged along the second direction Y, the first direction X being perpendicular to the second direction Y. In one embodiment, the first direction X is the axial direction of the rim semi-finished product 200.

[0077] Specifically, in the first direction X, i.e. the axial direction of the rim semi-finished product 200, the number of abutment grooves 111 provided on the surface of the first body 11 is equal to the number of punches 22, i.e. the number of abutment grooves 111 is equal to the number of columns of punches 22. It should be understood that in other embodiments, the number of abutment grooves 111 provided on the surface of the first body 11 in the first direction X, i.e. the axial direction of the rim semi-finished product 200, can also be different from the number of punches 22, which is not limited herein.

[0078] For example, in one embodiment, the surface of the first body 11 is provided with six abutment grooves 111 in the first direction X, i.e. the axial direction of the rim semi-finished product 200; the punches 22 have two rows in the axial direction and six columns in the second direction Y. In this way, when there are six rim semi-finished products 200, or more than six rim semi-finished products 200, one assembly hole 500 can be formed on each rim semi-finished product 200 in the first direction X at the same time, and two assembly holes 500 can be formed on each rim semi-finished product 200 in the circumferential direction of the rim semi-finished product 200 at the same time. It should be understood that in other embodiments, the rim manufacturing die 100 can also be provided in other ways, which is not limited herein.

[0079] Referring to Figure 7, the bottom wall of the abutting groove 111 is provided with a stamping hole 112, the inner diameter of the stamping hole 112 close to the outer surface of the first body 11 is larger than the inner diameter of the stamping hole 112 away from the outer surface of the first body 11, and the inner wall of the stamping hole 112 is in the shape of a smooth transition circular arc from one end of the stamping hole 112 away from the outer surface of the first body 11 to the other end. This can be considered as from the junction of the first assembly hole 501 and the second assembly hole 502, along the axial direction of the first assembly hole 501 away from the second assembly hole 502. The punch rod 22 includes a connecting portion 221, a first stamping portion 222, and a second stamping portion 223, the connecting portion 221 is connected with the second body 21, the first stamping portion 222 is connected between the second stamping portion 223 and the connecting portion 221, and the diameter of the first stamping portion 222 is smaller than the diameter of the connecting portion 221. Among them, each punch rod 22 corresponds to each stamping hole 112, and the outer surface shape of the first stamping portion 222 matches the inner wall shape of the stamping hole 112.

[0080] Through the above setting, when the assembly hole 500 is formed on the rim semi-finished product 200, the groove wall of the abutting groove 111 of the first mold half 10 abuts against the inner surface of the rim semi-finished product 200, the second mold punches from the outside of the rim semi-finished product 200, the first stamping portion 222 cooperates with the stamping hole 112 to form the recess structure 400 with the first assembly hole 501, and the second stamping portion 223 is arranged on the recess structure 400 to form the second assembly hole 502.

[0081] Further, the first body 11 is provided with a guide hole 113 communicating with the stamping hole 112, and the guide hole 113 is arranged away from the outer surface of the first body 11 relative to the stamping hole 112. The punch rod 22 further includes a guide portion 224, the second stamping portion 223 is connected between the guide portion 224 and the first stamping portion 222, and the guide portion 224 is guided and matched with the guide hole 113. Through the above setting, the guide hole 113 is guided and matched, which plays a role of guiding the second mold, so as to facilitate the forming of the assembly hole 500.

[0082] Please refer to Figure 4 , Figure 6 and Figure 10 In some embodiments, the rim manufacturing mold 100 further includes a back hole cutting body 30 and at least two back hole cutting tools 40, all the back hole cutting tools 40 are arranged on the same side of the back hole cutting body 30 and are rotationally connected with the back hole cutting body 30, and the back hole cutting tools 40 are operable to cut the outer side circumferential wall 310 of the rim semi-finished product 200 from the outside of the rim semi-finished product 200 to form the back hole 600. When the rim semi-finished product is a double-layer structure, the back hole 600 is formed on the outer side circumferential wall 310 of the rim semi-finished product 200 by the back hole cutting tool 40. After the back hole 600 is formed, the punch rod 22 is arranged to pass through the back hole 600 and cooperate with the first mold half 10 to punch and form the assembly hole 500.

[0083] Specifically, in some embodiments, the counterbore cutting tool 40 can be a cylindrical structure, and the outer diameter of the counterbore cutting tool 40 is larger than the outer diameter of the punch 22 at each location, so that the counterbore 600 is larger, thereby avoiding interference of the punch 22 with the wall of the counterbore 600 when the punch 22 is used to machine the mounting hole 500 through the counterbore 600.

[0084] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer readable storage medium, and when the computer program is executed, the processes of the above-mentioned embodiments can be included. Any reference to memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. The non-volatile memory can include read-only memory (Read-Only Memory, ROM), magnetic tape, floppy disk, flash memory, optical storage, high-density embedded non-volatile memory, resistive memory (ReRAM), magnetoresistive memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric memory (Ferroelectric Random Access Memory, FRAM), phase change memory (Phase Change Memory, PCM), graphene memory, etc. The volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, etc. As an illustration but not limitation, the RAM can be in various forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), etc. The database involved in the embodiments provided in the present application can include at least one of a relational database and a non-relational database. The non-relational database can include a distributed database based on a block chain, etc., without being limited thereto. The processor involved in the embodiments provided in the present application can be a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., without being limited thereto.

[0085] Each technical feature of the above-mentioned embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of each technical feature in the above-mentioned embodiments are not described, but as long as the combination of these technical features does not exist, it should be considered as the scope of the present application.

[0086] The above-described embodiments are merely illustrative of the present application, and the description is relatively specific and detailed, but should not be construed as limiting the scope of the patent. It should be noted that, for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of the present application. Therefore, the scope of protection of the patent of the present application should be subject to the appended claims.

[0087] In the description of the present application, it should be understood that the terms "axial", "radial", "circumferential", "length", "width", "thickness", "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be construed as limiting the present application.

[0088] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implying a specific number of the technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0089] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; 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; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. 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.

[0090] In the present application, unless otherwise specifically defined and limited, the first feature "on" or "under" the second feature can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0091] It is to be understood that when an element such as a layer, film or region is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element or intervening elements can also be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements present. It will be understood that, although the terms "first", "second", etc. can be used herein to describe various elements, these elements should not be limited by these terms since such elements are commonly called by different names in different contexts. For example, a first element could be termed a second element without departing from the teachings provided herein.

[0092] In the description of the present specification, the description of the terms "one embodiment", "other embodiments", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments and are not intended to limit the present application.

Claims

1. A method of manufacturing a rim, characterized by, The method comprises the following steps: providing a plurality of axially arranged wheel rim blanks, the plurality of axially arranged wheel rim blanks being a plurality of sequentially connected wheel rim blanks formed by rolling a strip-shaped profiled material, and the plurality of wheel rim blanks being arranged axially side by side; drilling assembly holes for assembling spokes on the side peripheral walls of all the wheel rim blanks along the axial direction of the wheel rim blanks, and simultaneously drilling at least two assembly holes on each wheel rim blank along the circumferential direction of the wheel rim blanks, until the side peripheral walls of all the wheel rim blanks are arranged with a plurality of assembly holes in the circumferential direction; cutting any two sequentially connected wheel rim blanks to form a plurality of independent wheel rim blanks.

2. The rim manufacturing method according to claim 1, characterized by, The assembly hole comprises a first assembly hole and a second assembly hole which are in communication with each other, the second assembly hole is arranged inwardly relative to the first assembly hole along the radial direction of the wheel rim blank, and the inner diameter of the end of the first assembly hole away from the second assembly hole is greater than the inner diameter of the end of the first assembly hole close to the second assembly hole; wherein, from the joint of the first assembly hole and the second assembly hole, along the axial direction of the first assembly hole towards the direction away from the second assembly hole, the inner wall of the first assembly hole is in the shape of a smooth transition circular arc.

3. The rim manufacturing method according to any one of claims 1 to 2, characterized by, Before drilling the assembly hole on the wheel rim blanks arranged side by side, it further comprises: simultaneously drilling back holes on the outer side peripheral walls of at least two wheel rim blanks; wherein, the assembly hole is drilled on the inner side peripheral wall of the wheel rim blank along the back hole.

4. The rim manufacturing method according to claim 3, characterized by, In the radial direction of the wheel rim blank, each assembly hole is opposite to each back hole, and the assembly hole is arranged inwardly relative to the back hole.

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