Method for manufacturing disc brake mounting seat and method for manufacturing disc brake hub

Abstract

The present application provides a kind of disc brake mounting seat manufacturing method and disc brake hub manufacturing method, wherein the disc brake mounting seat manufacturing method includes the step of manufacturing the fixing member of the first material and the step of forming the seat body of the second material combined with the fixing member, the disc brake hub manufacturing method includes the disc brake mounting seat manufactured by the above-mentioned disc brake mounting seat manufacturing method to manufacture disc brake hub, so that a composite disc brake mounting seat can be manufactured, since the disc brake mounting seat is fixed on the predetermined position of the rim of the hub by its fixing member, the seat body can be made of different materials from the rim, so that the material range of the seat body can be greatly expanded, and the material that is easier to process and easier to achieve higher machining accuracy can be selected according to the needs, or the material with specific properties can be used to manufacture the seat body, so that the machining efficiency of the disc brake hub is higher, the positioning accuracy of the finished disc brake hub to the disc brake is better, or it is suitable for a wider range of application scenarios.

Description

Technical Field

[0001] This invention belongs to the technical field of wheel hub manufacturing methods, specifically relating to a method for manufacturing a disc brake disc mounting base and a method for manufacturing a disc brake wheel hub. Background Technology

[0002] Electric vehicles and motorcycles typically use drum brakes or disc brakes and corresponding brakes. Compared to drum brakes, disc brakes offer more linear braking force and a better user experience. Furthermore, their open design helps maintain wheel cleanliness over long-term use, leading to their increasingly widespread adoption in recent years.

[0003] One type of disc brake hub is the reverse disc brake hub, used to install a reverse disc brake disc with a diameter close to that of the hub. Existing reverse disc brake hubs are mostly iron hubs, which include an iron rim and multiple iron mounting seats set on the rim. The mounting seats have threaded holes, which can be used to install the disc brake disc with corresponding screws. The processing of the above-mentioned reverse disc brake hub includes the following process steps: (1) manufacturing iron mounting seats by cutting and other processing methods; (2) welding multiple iron mounting seats to the iron rim respectively; (3) leveling the outer end faces (end faces used to support the disc brake disc) of multiple iron mounting seats by cutting; (4) drilling threaded holes in each iron mounting seat. In steps (1), (3) and (4) above, due to the high hardness of iron, the machining speed of the mounting base is very slow, and the cutting tool is prone to skipping, resulting in machining quality problems and low production efficiency of the disc brake hub. In particular, in step (3) above, due to the difficulty in machining iron, the outer end faces of multiple mounting bases are difficult to machine to the ideal precision. When the precision of the outer end faces of multiple mounting bases is not ideal, the disc brake disc cannot be well supported and positioned. During braking, the disc brake disc is more prone to vibration and axial displacement, and will produce greater abnormal noise when it collides with the mounting base, bringing a bad driving experience and braking operation feeling to the user. Summary of the Invention

[0004] This invention is made to solve the above-mentioned problems, and aims to provide a manufacturing method for a disc brake disc mounting base that is more convenient and faster to manufacture and has higher processing accuracy, as well as a corresponding manufacturing method for a disc brake hub. The invention adopts the following technical solution:

[0005] This invention provides a method for manufacturing a disc brake disc mounting base, used to manufacture a disc brake disc mounting base for mounting a disc brake disc on the rim of a wheel hub. The method includes the following technical features: step S1-1, manufacturing a fastener of a first material; step S1-2, forming a seat body of a second material that engages with the fastener, wherein the fastener has: one or more connecting portions that engage with the seat body; and one or more fixing portions that protrude from the seat body and are fixed at corresponding predetermined positions on the rim, the seat body having: a mating portion that engages with the fixing portions and mates with the rim; and a supporting and positioning portion having a positioning end face for supporting and positioning the disc brake disc.

[0006] The disc brake disc mounting base manufacturing method provided by the present invention may also have the following technical features: the first material is iron, the fixing member is a bent sheet, and in step S1-1, the fixing member is manufactured by stamping; the second material is any one of aluminum alloy, magnesium alloy, aluminum-magnesium alloy, copper alloy, copper-zinc alloy, and industrial plastic; the base body is a column with a missing corner, and in step S1-2, the base body combined with the fixing member is formed by casting.

[0007] The disc brake disc mounting bracket manufacturing method provided by the present invention may also have the following technical features, wherein the fixing member is integrally formed from a bent sheet material, which is L-shaped with chamfers and has a central hole. Step S1-1 includes the following sub-steps: Step S1-1-1, punching through holes corresponding to the central hole and outer contour grooves corresponding to the outer contour of the fixing member on the flat sheet material, thereby forming a first semi-finished piece connected to the connecting piece; Step S1-1-2, performing a longitudinal pressing on the first semi-finished piece to form a bent second semi-finished piece connected to the connecting piece; Step S1-1-3, performing a second longitudinal pressing on the second semi-finished piece to form a third semi-finished piece connected to the connecting piece with a bending angle consistent with the bending angle of the fixing member; Step S1-1-4, cutting the third semi-finished piece and the connecting piece to obtain the fixing member.

[0008] The disc brake disc mounting base manufacturing method provided by the present invention may also have the following technical features: in step S1-1, a stamping device is used to perform the stamping process. The stamping device includes a matching upper die mechanism and a lower die mechanism. The upper die mechanism has a blanking upper die group, a first longitudinal pressing lower die group, a second longitudinal pressing upper die group, and a cutting upper die group. The lower die mechanism has a blanking-cooperating lower die group that cooperates with the blanking upper die group to perform the blanking, a first longitudinal pressing lower die group that cooperates with the first longitudinal pressing lower die group to perform the first longitudinal pressing, a second longitudinal pressing lower die group that cooperates with the second longitudinal pressing upper die group to perform the second longitudinal pressing, and a cutting-cooperating lower die group that cooperates with the cutting upper die group to perform the cutting. When the upper die mechanism and the lower die mechanism cooperate to perform one stamping, one blanking, one first longitudinal pressing, one second longitudinal pressing, and one cutting are completed at different positions on the sheet.

[0009] The disc brake mounting base manufacturing method provided by the present invention may also have the following technical features: in steps S1-2, the base body is formed by die casting using a die casting device. The die casting device includes a die casting machine and a die casting mold, which is disposed on the die casting machine and used to cooperate with the die casting machine to perform the die casting. The die casting mold includes a matching fixed mold and a moving mold. The moving mold has one or more first base body grooves and a positioning groove disposed on one side of the first base body groove. The fixed mold has one or more second base body grooves corresponding to the first base body grooves. When the fixed mold and the moving mold are closed, the first base body grooves and the corresponding second base body grooves combine to form a base body cavity for forming the base body. The positioning groove is used for the fixing part of the fixing member to be embedded, thereby positioning the relative position of the fixing member and the base body cavity.

[0010] The disc brake disc mounting base manufacturing method provided by the present invention may also have the following technical features, wherein there are multiple first base slots, and the die-casting device further includes: a fixing component pre-positioning mechanism for arranging the multiple fixing components in an arrangement corresponding to the multiple first base slots; and a workpiece transfer part for simultaneously placing the arranged multiple fixing components into the multiple first base slots of the die-casting mold, and embedding the fixing parts of the multiple fixing components into the corresponding positioning slots, and for removing the die-cast disc brake disc mounting base from the die-casting mold.

[0011] The disc brake disc mounting base manufacturing method provided by the present invention may also have the following technical features: after step S1-2, it further includes step S1-3, which involves finishing the disc brake disc mounting base, wherein step S1-3 includes at least removing the second material attached to the fixing portion of the fixing member of the disc brake disc mounting base.

[0012] This invention provides a method for manufacturing a disc brake hub, which is used to manufacture a disc brake hub that can be fitted with a disc brake disc. The method has the following technical features, including the following steps: Step S2-1, welding multiple disc brake disc mounting seats to the rim of the hub body to form the disc brake hub; Step S2-2, machining the positioning end faces of the multiple disc brake disc mounting seats so that the multiple positioning end faces are located on the same plane, and the plane is perpendicular to the axial direction of the hub body, wherein the disc brake disc mounting seats are manufactured by the above-described disc brake disc mounting seat manufacturing method.

[0013] The disc brake hub manufacturing method provided by the present invention may also have the following technical features: in step S2-1, the disc brake disc mounting seat is welded to the rim by laser welding; in step S2-2, the positioning end faces of the seats of the plurality of disc brake disc mounting seats are respectively machined so that the plurality of positioning end faces are located on the plane.

[0014] The disc brake wheel hub manufacturing method provided by the present invention may also have the following technical features, wherein, in step S2-1, the welding is performed by a welding device, the welding device comprising: a wheel hub positioning mechanism for loading and positioning the wheel hub body; a mounting base feeding mechanism for placing the disc brake disc mounting base onto the rim of the wheel hub body loaded and positioned by the wheel hub positioning mechanism; and a welding mechanism for welding the fixing part of the disc brake disc mounting base placed on the rim to the rim.

[0015] The disc brake hub manufacturing method provided by the present invention may also have the following technical features, wherein the fixing part is two, which are exposed from one side of the seat body and one end of the seat body respectively, and are located at the bottom of the groove and the rim of the wheel rim respectively. The welding mechanism includes two welding guns for simultaneously welding the fixing part located at the bottom of the groove and the bottom of the groove, and the fixing part located at the rim and the rim.

[0016] The disc brake hub manufacturing method provided by the present invention may also have the following technical features: the mating part of the seat has a mating notch that mates with the rim flange and the bead seat of the wheel rim; there are two fixing parts, which are exposed from the mating notch of the seat and are respectively located at the bead seat of the wheel rim; the welding mechanism includes two welding guns for simultaneously welding the two fixing parts to the bead seat.

[0017] The disc brake hub manufacturing method provided by the present invention may also have the following technical features: after step S2-2, it further includes: step S2-3, machining mounting holes on the seats of the plurality of disc brake disc mounting seats respectively, wherein the extending direction of the mounting holes is perpendicular to the positioning end face of the seat body, and the mounting opening of the mounting holes is located on the positioning end face.

[0018] The disc brake hub manufacturing method provided by the present invention may also have the following technical features, wherein the mounting hole is a threaded hole, and in steps S2-3, the mounting hole is machined on the seat body by a drilling and tapping device, the drilling and tapping device includes a drilling cutter group and a tapping cutter group, the drilling cutter group has multiple drilling cutters, the tapping cutter group has multiple tapping cutters, and the arrangement of the multiple drilling cutters and the multiple tapping cutters corresponds to the arrangement of the multiple disc brake disc mounting seats.

[0019] This invention also provides a wheel hub manufacturing method, which has the following technical features: First, a connecting part (i.e., a fixing part) is stamped; then, the connecting part is placed in a mold (i.e., a die-casting mold), the cavity of which is adapted to the shape of a threaded seat (i.e., a seat body); then, molten aluminum is injected into the mold, and after the aluminum cools and solidifies, a threaded seat is formed, which encloses the connecting part to form a mounting seat (i.e., a disc brake disc mounting seat); the mounting seat is removed from the mold, cleaned appropriately, and then welded onto the wheel rim; the wheel rim is clamped on a CNC machine tool, and a cutting plane and a threaded hole are drilled on the surface of the threaded seat; a central hole for the shaft is cut at the center of the wheel rim, which is used to assemble the bearing; the threaded hole is concentric with the central hole for the shaft of the wheel rim.

[0020] Invention Function and Effect

[0021] According to the disc brake disc mount manufacturing method and disc brake hub manufacturing method of the present invention, the disc brake disc mount manufacturing method includes the step of manufacturing a fastener of a first material and the step of forming a seat body of a second material that is combined with the fastener. The disc brake hub manufacturing method includes manufacturing a disc brake hub using the disc brake disc mount manufactured by the above disc brake mount manufacturing method. Therefore, a composite disc brake mount can be manufactured. Since the disc brake mount is fixed to a predetermined position on the rim of the hub by its fastener, the seat body can be made of a different material than the rim, which greatly expands the range of materials that can be used for the seat body. Materials that are easier to process and easier to achieve higher processing accuracy, or materials with specific properties, can be selected to manufacture the seat body as needed. This results in higher processing efficiency for the disc brake hub, better positioning accuracy of the finished disc brake hub for the disc brake disc, or applicability to a wider range of application scenarios. Attached Figure Description

[0022] Figure 1This is a flowchart of the manufacturing method of the disc brake disc mounting base in Embodiment 1 of the present invention;

[0023] Figure 2 This is a perspective view of the disc brake mounting bracket in Embodiment 1 of the present invention;

[0024] Figure 3 These are perspective views of the disc brake mounting bracket from different angles in Embodiment 1 of the present invention;

[0025] Figure 4 This is a cross-sectional view of the disc brake mounting bracket in Embodiment 1 of the present invention;

[0026] Figure 5 This is a perspective view of the fastener in Embodiment 1 of the present invention;

[0027] Figure 6 This is a side view of the fastener in Embodiment 1 of the present invention;

[0028] Figure 7 This is a schematic diagram of the stamping device in Embodiment 1 of the present invention;

[0029] Figure 8 This is a schematic diagram of the structure of the iron strip sheet during the stamping process in Embodiment 1 of the present invention;

[0030] Figure 9 This is a flowchart illustrating the manufacturing of a fastener via stamping in Embodiment 1 of the present invention;

[0031] Figure 10 This is a schematic diagram of the die-casting device in Embodiment 1 of the present invention;

[0032] Figure 11 This is a schematic diagram of the moving mold in Embodiment 1 of the present invention;

[0033] Figure 12 This is a flowchart illustrating the formation of the base body by die casting in Embodiment 1 of the present invention;

[0034] Figure 13 This is a flowchart of the disc brake hub manufacturing method in Embodiment 1 of the present invention;

[0035] Figure 14 This is a perspective view of the disc brake hub and disc brake disc in Embodiment 1 of the present invention;

[0036] Figure 15 This is a cross-sectional view of the disc brake hub and disc brake disc in Embodiment 1 of the present invention;

[0037] Figure 16 yes Figure 15 Enlarged view of the area inside circle A;

[0038] Figure 17 This is a schematic diagram of the welding device in Embodiment 1 of the present invention;

[0039] Figure 18 This is a schematic diagram of the punching and tapping device in Embodiment 1 of the present invention;

[0040] Figure 19 This is a perspective view of the fastener in Embodiment 2 of the present invention;

[0041] Figure 20 This is a perspective view of the fastener in Embodiment 3 of the present invention;

[0042] Figure 21 This is a perspective view of the disc brake mounting bracket in Embodiment 4 of the present invention.

[0043] Figure label:

[0044] Disc brake hub 100; rim 10; groove bottom 11; tire bead seat 12; rim 13; disc brake disc mounting base 20; base body 21; support and positioning part 211; positioning end face 2111; mating part 212; mating notch 2121; mating surface 21211; receiving groove 2122; mounting hole 213; mounting opening 213a; through opening 213b; first hole portion 2131; second hole portion 2132; third hole portion 2133; fastener 22; mating part 221; first plate-shaped portion 2211; second plate-shaped portion 2212; connecting part 2213; middle hole 2214; hollowed-out portion 2214a; mating hole 2214b; mating notch 2215; end mating hole 2216; clearance notch 2217; Fixed part 222; rim fixed part 222a; groove bottom fixed part 222b; bead seat fixed part 222c; first plate-shaped member 223; first joint part 2231; first clearance notch 22311; first joint notch 22312; first fixed part 2232; second plate-shaped member 224; middle joint notch 22411; second joint notch 22412; second fixed part 2242; bending part 225; wheel spoke 30; rim welding part 41; groove bottom welding part 42; bead seat welding part 43; disc brake disc 200; friction hole 201; fixing hole 202; fastening rod 300; fastening rod cap part 301; fastening rod transition part 302; screw part 303; stamping device 400; upper mold mechanism 410; upper mold frame 411; Upper die base 412; upper punching die assembly 413; first longitudinal pressing upper die assembly 414; second longitudinal pressing upper die assembly 415; upper cutting die assembly 416; lower die mechanism 420; lower die holder 421; lower die base 422; lower punching matching die assembly 423; first longitudinal pressing matching lower die assembly 424; second longitudinal pressing matching lower die assembly 425; lower cutting matching lower die assembly 426; die casting device 500; fixed part pre-positioning mechanism 510; vibratory feeder 511; fixed part transfer robot 512; pre-positioning seat 513; workpiece transfer mechanism 520; part placement assembly 521; part removal assembly 522; die casting machine 530; die casting mold 540; moving mold 542; first seat groove 5421; first positioning groove 5422; second positioning groove 5423; first gating... 5424; Welding device 600; Mounting base feeding mechanism 610; Vibratory feeder 611; Feeding channel 612; Feeding seat 613; Feeding robot 614; Hub positioning mechanism 620; Placement platform 621; Centering column 622; Welding mechanism 630; Welding torch 631; Welding torch bracket 632; Welding torch drive assembly 633; ​​Punching and tapping device 700; Hub fixing mechanism 710; Punching knife set 720; Punching knife set frame 721; Punching knife 722; Tapping knife set 730; Tapping knife set frame 731; Tapping knife 732; Knife set drive mechanism 740; Iron strip sheet 900; Through hole 901; Outer contour groove 902; Positioning hole 903; First semi-finished sheet 910; Second semi-finished sheet 920; Third semi-finished sheet 930.Connecting piece 950. Detailed Implementation

[0045] To make the technical means, creative features, objectives and effects of the present invention easy to understand, the following describes in detail the manufacturing method of the disc brake disc mounting base and the manufacturing method of the disc brake hub of the present invention with reference to the embodiments and accompanying drawings.

[0046] <Example>

[0047] This embodiment provides a method for manufacturing a disc brake disc mount, which is a composite material disc brake disc mount that can be welded onto an iron rim.

[0048] Figure 1 This is a flowchart of the manufacturing method of the disc brake disc mounting bracket in this embodiment.

[0049] like Figure 1 As shown, the method includes the following steps:

[0050] Step S1-1: Manufacture a fastener made of the first material.

[0051] Steps S1-2 form a seat made of a second material that is combined with the fastener. The seat and the fastener together constitute a disc brake mounting base.

[0052] Steps S1-3 involve precision machining of the disc brake mounting bracket.

[0053] The first material is one that can be effectively welded to an iron rim using conventional welding methods, such as iron. The second material can be a different material from the first material but with sufficient strength, such as aluminum alloy, magnesium alloy, aluminum-magnesium alloy, copper alloy, copper-zinc alloy, or industrial plastics.

[0054] To facilitate the explanation of the method in this embodiment, the finished structure of the disc brake mounting base will be described first, and then the corresponding manufacturing method will be explained in detail in conjunction with its structure.

[0055] Figure 2 This is a perspective view of the disc brake mounting bracket in this embodiment. Figure 3 These are perspective views of the disc brake disc mount at different angles in this embodiment. Figure 4 This is a cross-sectional view of the disc brake mounting bracket in this embodiment.

[0056] like Figures 2 to 4 As shown, as one example, the composite disc brake mount 20 includes an aluminum alloy body 21 (screw mount) and an iron fastener 22 (connector). A portion of the fastener 22 is integrated into the body 21, that is, the body 21 covers the fastener 22, thus achieving a tight bond between the two different metal materials.

[0057] The base 21 is a one-piece molded part, roughly in the shape of a column with a missing corner. Along its length, it can be divided into a support and positioning part 211 and a mating part 212. The base 21 also has a mounting hole 213 (threaded hole) for fixing the disc brake disc.

[0058] The support and positioning part 211 is generally rectangular in shape, and the outer contour of its cross-section along the length of the seat body 21 is a rectangle with rounded corners. The outer end of the support and positioning part 211 has a positioning end face 2111 for supporting and positioning the edge of the disc brake disc. The positioning end face 2111 is a plane, which is perpendicular to the length direction of the seat body 21.

[0059] The support and positioning part 211 is generally rectangular in shape, and the outer contour of its cross-section along the length of the seat body 21 is a rectangle with rounded corners. The outer end of the support and positioning part 211 has a positioning end face 2111 for supporting and positioning the edge of the disc brake disc. The positioning end face 2111 is a plane, which is perpendicular to the length direction of the seat body 21.

[0060] The mating part 212 is an irregularly shaped block extending from one end of the support and positioning part 211. Along the thickness direction of the seat body 21, the cross-sectional shape of one side of the mating part 212 matches that of the support and positioning part 211, while the other side has a mating notch 2121 and a receiving groove 2122. The mating notch 2121 has a mating surface 21211 facing the inside of the rim. The mating surface 21211 is approximately a bent U-shaped surface, and the bending shape of the mating surface 21211 matches the shape of the inner side of the rim flange and the bead seat portion. The receiving groove 2122 is a strip-shaped groove extending along the length direction of the seat body 21, and its opening communicates with the mating notch 2121.

[0061] In this embodiment, compared with the shape of the bead seat and the inner side of the rim body, the surface shape of the mating notch 2121 is more gentle, and the curvature of each part on the surface is relatively smaller. When the disc brake mounting seat 20 is set on the rim, there is a certain gap between the surface of the mating notch 2121 and the bead seat and the inner side of the rim.

[0062] The mounting hole 213 (threaded hole) is used to engage with the corresponding fastening rod to fix the edge of the disc brake disc 200 onto the seat 21. The mounting hole 213 is a threaded countersunk hole that extends along the length of the seat 21. One end of the mounting hole 213 is a mounting opening located at the positioning end face 2111, and the other end is a through opening located on one side of the extending direction of the receiving groove 2122 and communicating with the receiving groove 2122. The groove width of the receiving groove 2122 is greater than the diameter of the tail of the threaded rod.

[0063] Along the axial direction of the mounting hole 213, the mounting hole 213 includes a first hole portion 2131, a second hole portion 2132, and a third hole portion 2133 connected in sequence. The first hole portion 2131 is a shallow tapered hole, with its larger diameter end serving as the mounting opening. The second hole portion 2132 is a circular hole, with its diameter essentially the same as the smaller diameter end of the first hole portion 2131, and its depth greater than that of the first hole portion 2131. The third hole portion 2133 is a threaded circular hole with threads on its inner surface. The depth of the third hole portion 2133 is significantly greater than that of the second hole portion 2132, and one end of the third hole portion 2133 is a through-hole.

[0064] The fastening rod that matches the mounting hole 213 is a screw rod with a nut.

[0065] Figure 5 This is a perspective view of the fastener in this embodiment. Figure 6 This is a side view of the fastener in this embodiment.

[0066] like Figure 5 and Figure 6 As shown, the fastener 22 is integrally formed from a bent sheet (metal sheet) of a certain thickness, and its overall shape is a chamfered L-shape when viewed from the side. The fastener 22 includes a connecting part 221 and two fixing parts 222.

[0067] The connecting portion 221 is used to engage with the seat 21. The connecting portion 221 is located in the middle of the entire fixing member 22. The connecting portion 221 is generally in the shape of a bent square frame. From the side, the connecting portion 221 is also in the shape of a chamfered L. The connecting portion 221 can be regarded as being composed of a U-shaped first sheet portion 2211 (the horizontal segment in the bending direction), a similarly U-shaped second sheet portion 2212 (the vertical segment in the bending direction), and two generally T-shaped connecting portions 2213 (transition segments) connecting the two sheet portions. The two ends of the connecting portions 2213 are respectively connected to the corresponding ends (U-shaped ends) of the first sheet portion 2211 and the second sheet portion 2212. The length direction of the connecting portions 2213 is inclined relative to the surface direction of the first sheet portion 2211 and the surface direction of the second sheet portion 2212. The surface direction of the first sheet portion 2211 and the surface direction of the second sheet portion 2212 are approximately perpendicular to each other. Furthermore, the second sheet-like portion 2212 has a small curvature, which is basically consistent with the curvature of the bead seat. Since the size of the fastener 22 is very small relative to the overall size of the rim, the aforementioned curvature is small, and the second sheet-like portion 2212 can also be a flat sheet.

[0068] The connecting portion 221 has a large through hole 2214 in its center. The shape of the through hole 2214 corresponds to the overall shape of the connecting portion 221, and all four corners of the through hole 2214 are rounded. Multiple connecting notches 2215 are located on both sides of the connecting portion 221 along its bending direction. In this embodiment, the connecting notches 2215 are rounded rectangular notches, with a total of four notches 2215. Two connecting notches 2215 are distributed on each side of the connecting portion 221, and the notches on both sides are symmetrically distributed. The opening direction of the connecting notches 2215 is perpendicular to the bending direction of the fastener 22. The width of the connecting notches 2215 is greater than its depth, and all corners of the connecting notches 2215 are rounded. The rounded corners prevent the formation of sharp, easily damaged corners within the seat 21, thus increasing the strength of the connection between the seat 21 and the fastener 22.

[0069] Two fixing portions 222 are respectively formed at both ends of the bending direction of the connecting portion 221 (i.e., at both ends of the L-shape). The fixing portions 222 are rectangular plates extending from one end of the connecting portion 221, and the length direction of the fixing portions 222 is perpendicular to the bending direction of the connecting portion 221. The length of the fixing portions 222 is the same as the width of that end of the connecting portion 221, and the surface direction of the fixing portions 222 is consistent with the surface direction of that end of the connecting portion 221. In addition, the outer end of the fixing portions 222 is rounded.

[0070] One of the fixing portions 222 has a relatively narrow width and serves as the rim fixing portion 222a; the other fixing portion 222 has a relatively wide width and serves as the groove bottom fixing portion 222b. Furthermore, the outer end of the rim fixing portion 222a has a small curvature, which is substantially consistent with the circumferential curvature of the rim 13. Similarly, this curvature is very small, and the outer end of the rim fixing portion 222a can also be straight.

[0071] The portion of the central hole 2214 near the rim fixing portion 222a serves as the hollow portion 2214a (a hollow and open filling groove), and the portion of the central hole 2214 near the bottom fixing portion 222b serves as the connecting hole 2214b. The dividing line between the hollow portion 2214a and the connecting hole 2214b is approximately located in the middle of the central hole 2214 in the bending direction of the fastener 22, that is, the filling groove is distributed on the transverse section and / or transition section.

[0072] like Figure 4As shown, the rim fixing portion 222a extends from the side of the mating portion 212 of the seat body 21 near the support positioning portion 211, and is located on the same side as the mating notch 2121. The surface direction of the rim fixing portion 222a is approximately perpendicular to the length direction of the seat body 21. The groove bottom fixing portion 222b extends from the outer end of the mating portion 212 of the seat body 21, and the surface direction of the groove bottom fixing portion 222b is approximately perpendicular to the thickness direction of the seat body 21.

[0073] Along the length of the base 21, the mounting hole 213 passes through the cutout portion 2214a of the fastener 22. That is, by providing the cutout portion 2214a, the structure of the fastener 22 avoids the position (punched position) of the mounting hole 213 on the base 21, and the structure of the fastener 22 forms a three-sided enclosure around the lower part of the mounting hole 213.

[0074] The manufacturing method provided in this embodiment will be specifically described below in conjunction with the finished structure of the disc brake mounting base 20 described above.

[0075] Step S1-1: Manufacture a fastener made of the first material.

[0076] The raw material for the fastener 22 is iron strip coil. The iron strip coil is uncoiled and flattened by the corresponding uncoiling device and flattening device to form a flat and continuous long strip of iron strip. The iron strip sheet is then continuously fed to the stamping device for stamping, thereby forming multiple fasteners 22 in sequence.

[0077] Figure 7 This is a schematic diagram of the stamping device in this embodiment. Figure 8 This is a schematic diagram of the structure of the iron strip sheet during the stamping process in this embodiment.

[0078] like Figure 7 As shown, the stamping device 400 includes an upper die mechanism 410 and a lower die mechanism 420 arranged vertically, as well as a lifting drive mechanism and a guide mechanism (not shown in the figure).

[0079] The upper die mechanism 410 includes an upper die frame 411, an upper die base 412, a punching upper die assembly 413, a first longitudinal pressing upper die assembly 414, a second longitudinal pressing upper die assembly 415, and a cutting upper die assembly 416.

[0080] The upper die base 412 is installed below the upper die frame 411, and multiple springs are provided between the upper die base 412 and the upper die frame 411 to serve as a buffer. The punching upper die assembly 413, the first longitudinal pressing upper die assembly 414, the second longitudinal pressing upper die assembly 415, and the cutting upper die assembly 416 are all installed below the upper die base 412 and arranged sequentially along the length of the upper die base 412.

[0081] The lower die mechanism 420 includes a lower die holder 421, a lower die base 422, a punching-fitting lower die assembly 423, a first longitudinal pressing-fitting lower die assembly 424, a second longitudinal pressing-fitting lower die assembly 425, and a cutting-fitting lower die assembly 426.

[0082] The lower die base 422 is installed above the lower die holder 421. The punching-fitting lower die assembly 423, the first longitudinal pressing-fitting lower die assembly 424, the second longitudinal pressing-fitting lower die assembly 425, and the cutting-fitting lower die assembly 426 are all installed above the lower die base 422 and arranged sequentially along the length of the lower die base 422, and are respectively located directly below the corresponding upper die assembly. In addition, the end of the lower die base 422 near the cutting-fitting lower die assembly 426 is shaped like a truncated triangle and has two inclined guide grooves, which are used to allow the finished product fixing part 22 formed after cutting to slide along the guide grooves to the collection point.

[0083] The upper punching die 413 and the lower punching die 423 cooperate to punch out the outer contour and through hole on the iron strip sheet, corresponding to the structure of the finished fastener 22. Figure 7 As shown, in this embodiment, the upper punching module 413 cooperates with the lower punching module 423 to punch a pair of rounded rectangular through holes 901, a pair of T-shaped outer contour grooves 902 with generally rounded corners, and a smaller circular positioning hole 903 at a predetermined position on the iron strip sheet 900 during a single punching.

[0084] The through hole 901 corresponds to the shape of the central hole 2214 of the finished fastener 22.

[0085] The outer contour groove 902 corresponds to the outer contour shape of the finished fastener 22, and the outer contour groove 902 also has a groove portion corresponding to the mating notches 2215 on both sides of the finished fastener 22. In an alternative, the groove portion corresponding to the mating notch 2215 may not be formed by the upper stamping die 413 and the lower stamping die 423, but the mating notch 2215 may be machined in a subsequent process after stamping is completed.

[0086] The positioning hole 903 is located between a pair of through holes 901. The positioning hole 903 can be detected by a sensor to automatically and accurately position the iron strip sheet in the stamping device 400.

[0087] After punching the next set of through holes 901, outer contour grooves 902, and positioning holes 903 at the next position, the previous position of the iron strip sheet forms a connecting piece 950 located in the middle and a pair of first semi-finished pieces 910 connected to both sides of the connecting piece 950 in an axially symmetrical structure. The first semi-finished pieces 910 are flat sheets, and their structure corresponds to the finished fastener 22. The width of the connection between the first semi-finished pieces 910 and the connecting piece 950 is relatively small.

[0088] The first longitudinal pressing upper module 414 and the first longitudinal pressing lower module 424 cooperate to perform a single longitudinal pressing on the first semi-finished sheet 910, transforming it into a bent second semi-finished sheet 920. The bending angle is greater than that of the finished product fixing member 22, which avoids cracking caused by bending the iron strip sheet too much at one time. The first longitudinal pressing upper module 414 and the first longitudinal pressing lower module 424 each have a bent forming end face, and these two forming end faces are arranged facing each other. These two forming end faces have a bending surface shape corresponding to the finished product fixing member 22 but with a relatively larger bending angle.

[0089] The second longitudinal pressing upper module 415 and the second longitudinal pressing lower module 425 cooperate to perform a second longitudinal pressing on the second semi-finished product 920, making it a bent third semi-finished product 930, with the bending angle equal to that of the finished product fixing member 22. The second longitudinal pressing upper module 415 and the second longitudinal pressing lower module 425 each have a bent forming end face, and these two forming end faces are arranged facing each other. These two forming end faces have a bent surface shape that corresponds to the finished product fixing member 22 and has the same angle.

[0090] The upper cutting module 416 and the lower cutting module 417 cut off the connection between the third semi-finished piece 930 and the connecting piece 950, thereby obtaining the finished fastener 22.

[0091] The lifting drive mechanism is used to drive the upper die mechanism 410 to lift as a whole, so as to cooperate with the lower die mechanism 420 to perform stamping processing on the iron strip sheet. The guide mechanism is used to guide the lifting of the upper die mechanism 410, so that it lifts and moves in the vertical direction.

[0092] Figure 9 This is a flowchart illustrating the manufacturing of fasteners via stamping in an embodiment of the present invention.

[0093] like Figure 8 and Figure 9 As shown, based on the above-mentioned stamping device 400, step S1-1 specifically includes the following sub-steps:

[0094] Step S1-1-1: A through hole 901 and an outer contour groove 902 are punched on a flat iron strip sheet 900 to form a first semi-finished piece 910 and a connecting piece 950 connected thereto. The through hole 901 corresponds to the middle hole of the finished product fastener 22, and the outer contour groove 902 corresponds to the outer contour of the finished product fastener 22.

[0095] In step S1-1-2, the first semi-finished piece 910 is subjected to longitudinal pressing to form a bent second semi-finished piece 920. The bending angle of the second semi-finished piece 920 is greater than the bending angle of the finished product fastener 22.

[0096] Step S1-1-3: The second semi-finished piece 920 is subjected to secondary longitudinal pressing to form a bent third semi-finished piece 930. The bending angle of the third semi-finished piece 930 is consistent with that of the finished product fastener 22.

[0097] Step S1-1-4: Cut the third semi-finished piece 930 and the connecting piece 950 to obtain the finished fastener 22.

[0098] Through the above steps, multiple iron fasteners 22 can be manufactured.

[0099] Furthermore, based on the structure of the aforementioned stamping device 400, the punching and contour cutting at the first position, the first longitudinal pressing at the second position, the second longitudinal pressing at the third position, and the cutting at the fourth position can be completed during the single pressing process of the upper die mechanism 410, resulting in very high processing efficiency.

[0100] In addition, after the above steps S1-1-4, the stamped fastener 22 can be further finished by grinding and other finishing processes.

[0101] Steps S1-2 form a seat made of a second material that is combined with the fastener. The seat and the fastener together constitute a disc brake mounting base.

[0102] The raw material for the base 21 is molten aluminum alloy, which is formed by a corresponding die-casting device to form a base 21 that is tightly connected with the fastener 22.

[0103] Figure 10 This is a schematic diagram of the die-casting device in this embodiment.

[0104] like Figure 10 As shown, the die-casting apparatus 500 includes a fixed part pre-positioning mechanism 510, a workpiece transfer mechanism 520, a die-casting machine 530, and a die-casting mold 540.

[0105] The pre-positioning mechanism 510 for fixing members is used to arrange multiple fixing members 22 in an arrangement corresponding to the cavity of the die-casting mold 540.

[0106] The workpiece transfer mechanism 520 is used to place multiple fixing parts 22 into the die-casting mold 540 in the open mold state, and to remove the die-cast disc mounting seat 20 from the die-casting mold 540 in the open mold state.

[0107] The structure of the fixing component pre-positioning mechanism 510 and the workpiece transfer mechanism 520 will be explained in more detail below in conjunction with the structure of the die-casting mold 540.

[0108] The die casting machine 530 is a horizontal die casting machine in the prior art and has a spray mechanism for spray cooling the die-cast body.

[0109] The die-casting mold 540 includes a fixed mold and a moving mold. The fixed mold is fixed on the die-casting machine 530, and the moving mold 542 is connected to the pushing mechanism of the die-casting machine 530. Driven by the pushing mechanism, the moving mold 542 can move away from the fixed mold to open the mold, or move towards the fixed mold to close the mold.

[0110] The fixed mold and the moving mold 542 have a fixed mold forming groove and a moving mold forming groove on their opposing surfaces, respectively. When the mold is closed, the fixed mold forming groove and the moving mold forming groove are combined to form a mold cavity.

[0111] Figure 11 This is a schematic diagram of the moving mold in this embodiment.

[0112] like Figure 11 As shown, in this embodiment, the fixed mold forming groove of the moving mold 542 includes a plurality of first base grooves 5421, a plurality of first positioning grooves 5422, a plurality of second positioning grooves 5423, and a first runner groove 5424. The fixed mold forming groove of the fixed mold includes a plurality of second base grooves and a second runner groove.

[0113] The first positioning groove 5422 is disposed on one side of the corresponding first seat groove 5421, and the second positioning groove 5423 is located at the bottom of the first seat groove 5421. These grooves are respectively used to embed the outer ends of the two fixing parts 222 of the fixing member 22, thereby positioning the fixing member 22 in the corresponding first seat groove 5421, that is, positioning the fixing member 22 in the seat 21. Multiple second seat grooves of the fixed mold correspond to multiple first seat grooves 5421, and can be assembled with the corresponding first seat grooves 5421 to form a seat cavity for die-casting the seat 21. The first seat groove 5421 is approximately a rounded rectangular groove with a block-shaped protrusion inside, and its shape corresponds to the shape of the side of the seat 21 with the mating notch 2121. The second seat groove is approximately a rounded rectangular groove corresponding to the first seat groove 5421, and its shape corresponds to the shape of the other side of the seat 21. The first gating groove 5424 can be combined with the second gating groove to form gatings that communicate with multiple seat cavities respectively.

[0114] When opening the mold, multiple fasteners 22 can be placed in each of the first base grooves 5421, and the outer ends of the two fixing parts 222 of the fasteners 22 can be embedded into the corresponding first positioning grooves 5422 and second positioning grooves 5423, thereby pre-positioning the fasteners 22.

[0115] After the mold is closed, the corresponding first seat groove 5421 and second seat groove combine to form a seat cavity. The die casting machine injects molten aluminum alloy into the gating system. The molten aluminum alloy flows into each seat cavity along the gating system. Then the die casting machine maintains the predetermined temperature and pressure for a predetermined time to form multiple seats 21 that are combined with the fixing part 22, that is, multiple disc brake mounting seats 20 are formed. After that, the mold is opened and multiple disc brake mounting seats 20 are taken out.

[0116] The aforementioned fixture pre-positioning mechanism 510 is used to arrange multiple fixtures 22 into an arrangement corresponding to the multiple first seat grooves 5421 of the moving mold 542. The fixture pre-positioning mechanism 510 includes a vibratory feeder 511, a fixture transfer robot 512, and a pre-positioning seat 513. The vibratory feeder 511 uses vibration to arrange the multiple disordered fixtures 22 neatly and outputs them sequentially to a predetermined position (the outer end of the material channel connected to the output end of the vibratory feeder). The fixture transfer robot 512 is used to grasp the fixtures 22 from the predetermined position and place them into a placement position on the pre-positioning seat 513 according to a predetermined path until the placement position on the pre-positioning seat 513 is full. The arrangement of the multiple placement positions on the pre-positioning seat 513 is substantially consistent with the arrangement of the multiple first seat grooves 5421 of the moving mold 542.

[0117] The aforementioned workpiece transfer mechanism 520 is used to simultaneously pick up multiple fixing parts 22 from the predetermined seat 513 filled with fixing parts 22 and place them together into multiple first seat slots 5421 of the moving mold 542 in the mold-opening state. It is also used to remove multiple disc brake disc mounting seats 20 formed after die casting from the die-casting mold 540 in the mold-opening state. In this embodiment, the workpiece transfer mechanism 520 is an industrial robotic arm, the end of which has a placement assembly 521 for simultaneously picking up multiple fixing parts 22 and a picking assembly 522 for simultaneously picking up multiple disc brake disc mounting seats 20. The placement assembly 521 and the picking assembly 522 are arranged opposite to each other, and the end joint of the industrial robotic arm can rotate 360 ​​degrees. After the industrial robotic arm places its placement assembly 521 toward the moving mold 542 and places multiple fixing parts 22 into the mold cavity of the moving mold 542, the industrial robotic arm moves to the outside of the die-casting machine 530. While the die-casting machine 530 is performing die casting, the industrial robotic arm rotates its end joint 180 degrees, so that the part-removing assembly 522 can be rotated to face the moving mold 542 in order to remove the disc brake mounting seat 20 formed after die casting.

[0118] Figure 12 This is a flowchart illustrating the process of forming the base body using die casting in this embodiment.

[0119] like Figure 12 As shown, based on the die-casting apparatus 500 described above, step S1-2 specifically includes the following sub-steps:

[0120] Step S1-2-1: Arrange multiple fasteners in a configuration corresponding to the multiple seat cavities in the die-casting mold cavity.

[0121] Step S1-2-2: Simultaneously place the arranged fixing parts into the moving mold of the die-casting mold in the open mold state.

[0122] In steps S1-2-3, the die-casting machine closes the die-casting mold and injects the second material into the closed die-casting mold. After heat and pressure are maintained for a certain period of time, multiple seats that are combined with the fixing parts are formed, thereby obtaining multiple disc brake mounting seats.

[0123] In step S1-2-4, the die-casting machine opens the die-casting mold and sprays the multiple disc brake mounting seats in the opened die-casting mold for cooling.

[0124] Step S1-2-5: Remove multiple disc brake mounting brackets from the die-casting mold.

[0125] Steps S1-3 involve precision machining of the disc brake mounting bracket.

[0126] Among them, the seat body 21 of the disc brake disc mounting base 20 formed after die casting is finely processed by removing impurities and grinding, and the outer end of the fixing part 222 of the fixing part 22 is cut or ground to remove the thin aluminum alloy layer attached to the outer end of the fixing part 222 due to mold allowance or other reasons, so as to avoid the thin aluminum alloy layer affecting the subsequent welding.

[0127] Figure 13 This is a flowchart of the disc brake wheel hub manufacturing method in this embodiment.

[0128] like Figure 13 As shown, this embodiment also provides a method for manufacturing a disc brake wheel hub, which includes the following steps:

[0129] Step S2-1: Weld multiple disc brake mounting brackets to the rim of the wheel hub body to form a disc brake wheel hub.

[0130] Step S2-2: The positioning end faces of the multiple disc brake disc mounting seats of the disc brake hub are machined so that the multiple positioning end faces are located on the same plane and the plane is perpendicular to the axis of the hub body.

[0131] Step S2-3: Machining mounting holes are made on the seats of the multiple disc brake disc mounting brackets of the disc brake hub.

[0132] Similarly, to facilitate the explanation of the above methods, the finished structure of the disc brake hub will be described first, and then the corresponding manufacturing method will be explained in detail in conjunction with its structure.

[0133] Figure 14 This is a perspective view of the disc brake hub and disc brake disc in this embodiment. Figure 15This is a cross-sectional view of the disc brake hub and disc brake disc in this embodiment. Figure 16 yes Figure 15 A magnified view of the area inside circle A.

[0134] like Figures 13 to 15 As shown, the disc brake hub 100 includes a rim 10, a plurality of disc brake disc mounting seats 20, and spokes 30.

[0135] The rim 10 includes a groove bottom 11, a bead seat 12, and a rim 13. Along the circumference of the rim 10, the groove bottom 11 has a roughly trapezoidal groove shape for easy tire installation and removal. Two bead seats 12 are formed on both sides of the groove bottom 11, with a bend between the bead seats 12 and the groove bottom 11. The bead seats 12 support the tire in the radial direction. Two rims 13 are formed on both sides of the two bead seats 12, with a bend between the rims 13 and their corresponding bead seats 12. The two rims 13 are used to clamp the tire bead on both sides to support the tire and maintain its axial direction.

[0136] The rim 10 is an iron rim, formed from iron or steel plates through spinning and punching processes (punching valve core holes). The specific structure of the rim 10 is existing technology and will not be described in detail.

[0137] Multiple disc brake disc mounting seats 20 are respectively disposed on the rim 10, located on the same side of the rim 10 axially, and evenly distributed along the circumference of the rim 13 of the rim 10, for mounting disc brake discs 200. In this embodiment, the edge of the disc brake disc 200 has six fixing holes 202 evenly distributed along its circumference, and correspondingly, the disc brake hub 100 has six disc brake disc mounting seats 20.

[0138] The rim fixing part 222a of the fixing part 22 of the disc brake mounting bracket 20 is used to be welded to the rim 13 of the rim 10, and the groove bottom fixing part 222b is used to be welded to one side of the groove bottom 11 of the rim 10.

[0139] Specifically, the face of the rim fixing part 222a is in contact with the outer end of the rim 13 in the axial direction of the rim 10, and welding is performed between the outer end face of the rim fixing part 222a and the outer end of the rim 13 to form a strip-shaped rim welding part 41 (welding point 1).

[0140] The surface direction of the groove bottom fixing part 222b is perpendicular to the radial direction of the rim 10. Therefore, the outer end face of the groove bottom fixing part 222b is perpendicular to the axial direction of the rim 10. The inner side of the groove bottom 11 is inclined relative to the outer end face of the groove bottom fixing part 222b. Therefore, one side of the outer end face of the groove bottom fixing part 222b contacts one inner side of the groove bottom 11. The other side of the outer end face of the groove bottom fixing part 222b forms a gap with the inner side of the groove bottom 11. The outer end face of the groove bottom fixing part 222b and the inner side of the groove bottom 11 are welded together using this gap to form a strip-shaped groove bottom welded part 42 (welding point two).

[0141] That is, the disc brake hub 100 also includes a rim welding part 41 and a groove bottom welding part 42.

[0142] The length of the seat 21 is aligned with the axial direction of the rim 10, and the thickness of the seat 21 is aligned with the radial direction of the rim 10. The positioning end face 2111 of the seat 21 is perpendicular to the axial direction of the rim 10. Axially, the support and positioning portion 211 of the seat 21 is located outside the rim 10, therefore the positioning end face 2111 is also located outside the rim 10, allowing it to be used to mount disc brake discs 200 with an outer diameter close to the diameter of the rim 10. Radially, the seat 21 does not extend beyond the outermost end of the rim 10, thus not affecting tire mounting.

[0143] The lower end of the cap portion 311 of the fastening rod 300 is accommodated in the upper part of the fixing hole 202 (counter-recessed hole) of the disc brake disc 200. The transition portion 312 is accommodated in the lower part of the fixing hole 202 and the first hole portion 2131 and the second hole portion 2132 of the mounting hole 213. The screw portion 320 passes through the third hole portion 2133, and the outer end of the screw portion 320 is accommodated in the receiving groove 2122 of the seat body 21.

[0144] The spokes 30 are fixed to the inner ring of the rim 10 and serve to support the rim 10. The spokes 30 include a central spoke plate portion and multiple spokes extending outward from the spoke plate portion. The outer end of each spoke is fixed to the inner side of the groove bottom 11 of the rim 10, providing support for the rim 10 and thus forming an integral hub. The spokes 30 can be made of iron, with the outer ends of the spokes directly welded to the inner side of the groove bottom 11 of the rim 10. The spokes 30 can also be made of other materials, such as aluminum alloy, with iron connectors pre-embedded at the outer ends of each spoke, which are then welded to the inner side of the groove bottom 11 of the rim 10. The specific structure of the spokes 30 is existing technology and will not be described further.

[0145] As described above, in this embodiment, six disc brake disc mounting seats 20 are provided on the rim 10 of the disc brake hub 100. The positioning end faces 2111 of these six disc brake disc mounting seats 20 are approximately on the same plane, and this plane is perpendicular to the axial direction of the disc brake hub 100. Therefore, after the disc brake disc 200 is mounted on the six disc brake disc mounting seats 20 by the six fastening rods 300, the disc brake disc 200 is located on the outer side of the disc brake hub 100 in the axial direction, and the surface direction of the disc brake disc 200 is also perpendicular to the axial direction of the disc brake hub 100. When the corresponding brake clamps the inner ring of the disc brake disc 200 to apply brakes, the disc brake disc 200 is subjected to frictional force, and a force opposite to its rotation direction is applied to the rim 10 through the fastening rod 300 and the disc brake disc mounting seat 20. Since the surface direction of the disc brake disc 200 is also perpendicular to the axis of the disc brake hub 100, the direction of the stress on the fastening rod 300 can be kept substantially perpendicular to the axis of the fastening rod 300.

[0146] The following will explain each step in detail with reference to the structure of the finished disc brake wheel hub.

[0147] Step S2-1: Weld multiple disc brake mounting brackets to the rim of the wheel hub body to form a disc brake wheel hub.

[0148] In this embodiment, a corresponding welding device is used to automatically weld the disc brake mounting bracket to the rim of the wheel hub body. Laser welding is used.

[0149] Figure 17 This is a schematic diagram of the welding device in this embodiment.

[0150] like Figure 17 As shown, the welding device 600 includes a mounting base feeding mechanism 610, a hub positioning mechanism 620, and a welding mechanism 630.

[0151] The mounting base feeding mechanism 610 is used to sequentially transport the disc brake disc mounting bases 20 to predetermined positions. The mounting base feeding mechanism 610 includes a vibratory feeder 611, a feeding channel 612, a feeding seat 613, and a feeding robot 614. The vibratory feeder 611 arranges multiple disordered disc brake disc mounting bases 20 neatly and outputs them sequentially onto the feeding channel 612, pushing the multiple disc brake disc mounting bases 20 arranged sequentially on the feeding channel 612 towards the feeding seat 613. The disc brake disc mounting base 20 closest to the feeding seat 613 is pushed onto the feeding seat 613. The feeding seat 613 has a mounting groove that matches the lower part (the part with the matching notch 2121) of the disc brake disc mounting base 20. After the disc brake disc mounting base 20 is pushed onto the feeding seat 613, its lower part is embedded in the mounting groove, while its upper part is exposed, facilitating gripping by the robot. The feeding robot 614 picks up a disc brake mounting base 20 from the feeding seat 613 and places it on the wheel hub body at the wheel hub positioning mechanism 620 for welding.

[0152] The wheel hub positioning mechanism 620 is used to support and position the wheel hub body to be welded. The wheel hub positioning mechanism 620 includes a liftable and rotatable platform 621 and a centering column 622. The platform 621 is used to hold the wheel hub body to be processed and to move it up, down, and rotate it. The centering column 622 is coaxially arranged with the platform 621. One end of the centering column 622 facing the platform 621 is conical, i.e., it has a conical surface. When the wheel hub body is placed on the platform 621 and is raised towards the centering column 622, the conical surface at the front end of the centering column 622 abuts against the edge of the center hole of the wheel hub body, thereby centering the wheel hub body on the platform 621.

[0153] The aforementioned feeding robot 614, following a predetermined movement path, places a disc brake disc mount 20 onto the rim of the wheel hub body, which is positioned on the mounting platform 621 and centered thereon, and presses the disc brake disc mount 20 firmly onto the rim so that the welding mechanism 630 can perform welding. After the welding of the disc brake disc mount 20 is completed, the mounting platform 621 rotates by a predetermined angle, and the feeding robot 614 repeats the above process, thereby welding multiple disc brake disc mounts 20 onto the rim 10 and distributing them evenly along the circumference of the rim 10.

[0154] The welding mechanism 630 includes two welding torches 631, two welding torch supports 632, and a welding torch drive assembly 633. The welding torches 631 are mounted on corresponding welding torch supports 632, which allow the welding torches 631 to have a predetermined tilt angle, thus facilitating welding. In this embodiment, the axial direction of the wheel hub body placed on the mounting platform 621 is vertical, and the welding torches 631 are approximately at a 45-degree angle to the vertical direction. The welding torch drive assembly 633 is used to drive the welding torches 631 to move along a predetermined path and perform welding. In this embodiment, after the welding torch drive assembly 633 drives one welding torch 631 to the wheel rim 13 and the other welding torch 631 to the bottom of the groove 11, it drives both welding torches 631 to simultaneously weld along two approximately parallel straight lines. Because the size of the welding area between the disc brake mount 20 and the rim 10 is very small relative to the overall size of the wheel hub, although the fixing part 222, the rim 10, and the groove bottom 11 all have a certain curvature, the curvature is not obvious at such a small scale, and straight-line welding can ensure welding quality and strength. In an alternative solution, the welding torch drive assembly 633 can also drive two welding torches 631 to perform arc-shaped welding using the curvature of the rim 13 and the curvature of the sidewall of the groove bottom 11, respectively.

[0155] Step S2-2: Process the multiple disc brake disc mounting seats of the disc brake hub so that the multiple positioning end faces are located on the same plane and the plane is perpendicular to the axis of the hub body.

[0156] In this process, the disc brake hub 100, which has multiple disc brake mounting seats 20, is clamped onto a CNC machine tool using corresponding fixtures. The CNC machine tool then turns the positioning end face 2111 of the seat body 21 of each disc brake mounting seat 20 to make it a flatter plane, ensuring that all positioning end faces 2111 of a disc brake hub 100 are located on the same plane. This machining process is also called leveling.

[0157] In addition, a central hole for the shaft is cut at the center of the hub (i.e., the center of the spoke plate portion) using a CNC machine tool for assembling bearings.

[0158] Step S2-3: Machining mounting holes on the base of each disc brake disc mounting bracket of the disc brake hub.

[0159] The mounting holes are machined using appropriate punching and tapping devices.

[0160] Figure 18 This is a schematic diagram of the punching and tapping device in this embodiment.

[0161] like Figure 18 As shown, the punching and tapping device 700 includes a hub fixing mechanism 710, a punching tool group 720, a tapping tool group 730, a tool group driving mechanism 740, and a cleaning mechanism (not shown in the figure).

[0162] The wheel hub fixing mechanism 710 is used to fix the disc brake wheel hub 100 to be processed. In this embodiment, it includes a support member and a plurality of clamping members that are radially telescopically arranged on the support member. The clamping members match the outer periphery of the wheel rim 10 and are used to clamp the wheel rim 10 of the disc brake wheel hub 100 in the circumferential direction, thereby fixing the disc brake wheel hub 100 to be processed.

[0163] The punching tool assembly 720 includes a punching tool assembly frame 721 and a plurality of punching tools 722 rotatably mounted on the frame. The arrangement of the plurality of punching tools 722 is consistent with the arrangement of the plurality of disc brake disc mounting seats 20 in the disc brake hub 100. In this embodiment, it includes six punching tools 722 evenly distributed along a circumference.

[0164] The tapping tool assembly 730 includes a tapping tool assembly frame 731 and multiple tapping tools 732 rotatably mounted on the frame. The arrangement of the multiple tapping tools 732 is also consistent with the arrangement of the multiple disc brake disc mounting seats 20 in the disc brake hub 100.

[0165] The tool set drive mechanism 740 is used to drive the punching tool set 720 and the tapping tool set 730 to punch and tap (process internal threads) simultaneously on the seat 21 of multiple disc brake mounting seats 20. Specifically, the tool set drive mechanism 740 first drives the punching tool set 720 to translate as a whole to the front of the hub fixing mechanism 710. At this time, the axial direction of the multiple punching tools 722 is consistent with the axial direction of the hub. Then, the multiple punching tools 722 in the punching tool set 720 are driven to rotate and the entire punching tool set 720 is driven to move toward the fixed disc brake hub 100, thereby drilling through holes on the seat body 21 of each disc brake disc mounting seat 20. After that, the tool set drive mechanism 740 drives the punching tool set 720 to translate to the side, and then drives the tapping tool set 730 to translate to the front of the hub fixing mechanism 710. Then, the multiple tapping tools 732 in the tapping tool set 730 are driven to rotate and the entire tapping tool set is driven to move toward the fixed disc brake hub 100, thereby further machining internal threads in the through holes on the seat body 21 of each disc brake disc mounting seat 20 to form the aforementioned mounting holes 213.

[0166] The cleaning mechanism is used to spray water on the disc brake mounting base 20 during or after the punching and tapping processes of the punching cutter group 720 and the tapping cutter group 730, thereby washing away the metal debris generated by punching and tapping, and at the same time cooling the mounting base.

[0167] In an alternative solution, the aforementioned punching and tapping device can be omitted, and threaded holes can still be machined on each base using a CNC machine tool.

[0168] By following the steps described above, a disc brake hub 100 that can be fitted with a disc brake disc 200 can be manufactured.

[0169] Functions and effects of Example 1

[0170] According to the disc brake disc mounting base manufacturing method and disc brake hub manufacturing method provided in this embodiment, the disc brake disc mounting base manufacturing method includes the step of manufacturing a fastener of a first material and the step of forming a seat body of a second material that is combined with the fastener. The disc brake hub manufacturing method includes manufacturing a disc brake hub using the disc brake disc mounting base manufactured by the above disc brake disc mounting base manufacturing method. Therefore, a composite disc brake disc mounting base can be manufactured. Since the disc brake disc mounting base is fixed to a predetermined position on the rim of the hub by its fastener, the seat body can be made of a different material than the rim, which greatly expands the range of materials that can be used for the seat body. Materials that are easier to process and easier to achieve higher processing accuracy, or materials with specific properties, can be selected to manufacture the seat body as needed. This results in higher processing efficiency for the disc brake hub, better positioning accuracy of the finished disc brake hub for the disc brake disc, or applicability to a wider range of application scenarios.

[0171] In this embodiment, the base is made of aluminum alloy, while the fixing parts and rim are made of iron. Therefore, the base material has a lower hardness than iron, making it easier to machine. The machining time is significantly less than with an iron base, and it is less prone to tool wear and tool skipping. This makes it easier to achieve ideal machining accuracy, resulting in higher precision on the positioning end face of the base, which helps avoid or mitigate the aforementioned abnormal noise problem. Furthermore, aluminum alloy has a relatively low melting point, resulting in less energy consumption during the die-casting process.

[0172] Furthermore, the disc brake disc is also made of iron, and the hardness of the seat material is less than that of the disc brake disc. Therefore, during braking, especially during emergency braking, the support and positioning part of the seat can maintain better and more stable contact with the disc brake disc. The relatively soft seat material can play a certain buffering role, which can effectively avoid the above-mentioned abnormal noise problem, improve the user experience of the vehicle, and avoid driving safety problems caused by negative emotions of the vehicle user due to abnormal noise.

[0173] Furthermore, the process of forming iron fasteners through stamping is mature, reliable, and highly efficient. In particular, the structure of the stamping device in the embodiment allows for the completion of one-time cutting, one-time longitudinal pressing, one-time secondary longitudinal pressing, and one-time cutting at different locations on the iron strip sheet in a single stamping operation. Continuous iron strip sheets can be continuously fed to the stamping device, which then continuously stamps and produces fasteners, resulting in very high processing efficiency.

[0174] Furthermore, the seat body, which is integrated with the fasteners, is formed by die casting, and the die casting mold has multiple seat body cavities, thus enabling efficient manufacturing of the seat body. In particular, in this embodiment, multiple fasteners are automatically arranged by a robotic arm and corresponding pre-positioned fasteners, and then the arranged fasteners are placed into the die casting mold at once by an industrial robotic arm. The manufactured disc brake mounting seats are also removed at once by an industrial robotic arm. Therefore, not only is the manufacturing efficiency of the seat body higher, but a fully automated die casting process can also be realized, avoiding workers' contact with the high-temperature die casting machine and mold, and improving production safety.

[0175] Furthermore, by using a welding device to place the disc brake disc mounting bracket onto the rim of the wheel hub body and perform welding, automated welding can be achieved, saving manpower and increasing production efficiency. In addition, the welding device in this embodiment centers the wheel hub body to be processed through its wheel hub positioning mechanism, and then, in conjunction with a rotary table and a robotic arm, places the disc brake disc mounting bracket, resulting in higher positional accuracy between the disc brake disc mounting bracket and the wheel hub body. Furthermore, because the welding area is relatively small, simultaneous linear welding using two welding torches simplifies automation control and increases welding efficiency while ensuring welding strength.

[0176] Furthermore, mounting holes are machined in multiple disc brake disc mounting seats on the disc brake hub using a punching and tapping device. Specifically, holes are first drilled simultaneously on multiple seats using a punching tool set, and then internal threads are machined simultaneously in multiple holes using a tapping tool set. This not only greatly improves processing efficiency but also helps to improve the consistency of multiple disc brake disc mounting seats in the same hub, thereby further improving the positioning accuracy of the disc brake disc, resulting in better braking performance, and further avoiding or mitigating the aforementioned abnormal noise problem.

[0177] Furthermore, since the fastener has a hollowed-out portion, the fastener will not be touched at all when the punching and tapping device is processing the mounting hole. This avoids the punching process affecting the shape of the fastener or the bonding strength between the fastener and the seat. When installing the fastening rod, the fastening rod can also pass through the hollowed-out portion, thus avoiding the limitation on the size of the fastening rod. A longer fastening rod can be used to ensure the firmness of the disc brake disc installation.

[0178] <Example 2>

[0179] This embodiment provides a method for manufacturing a disc brake disc mounting base and a disc brake hub. In this embodiment, the same symbols are assigned to the same constituent elements as in Embodiment 1, and the corresponding descriptions are omitted.

[0180] Compared with Embodiment 1, the difference is that the method of this embodiment is used to manufacture disc brake disc mounting brackets with different shapes of fasteners.

[0181] Figure 19 This is a perspective view of the fastener in this embodiment.

[0182] like Figure 19 As shown, the overall shape of the disc brake mounting base 20 in this embodiment is the same as that in Embodiment 1, but the fixing member 22 is a separate fixing member.

[0183] Specifically, the fastener 22 in this embodiment includes a first sheet 223 and a second sheet 224 that are separated from each other and formed by processing a first sheet and a second sheet, respectively. The surface directions of the first sheet 223 and the second sheet 224 are approximately perpendicular, and the first sheet 223 and the second sheet 224 are arranged to form an L shape.

[0184] The first sheet-like component 223 is U-shaped and includes a first connecting portion 2231 and a first fixing portion 2232.

[0185] The first joint portion 2231 is also U-shaped, having one first clearance notch 22311 and two first joint notches 22312. The first clearance notch 22311 is located at one end in the length direction and the middle in the width direction of the first sheet 223. It is relatively large, with its depth and width slightly smaller than the length and width of the first joint portion 2231, respectively. Its opening direction is consistent with the length direction of the first sheet 223. The two first joint notches 22312 are smaller and symmetrically arranged on both sides of the width direction of the first joint portion 2231. Their opening direction is consistent with the width direction of the first sheet 223. The corners of both the first clearance notch 22311 and the first joint notches 22312 are rounded. The two ends of the first joint portion 2231 are roughly rectangular sheets with rounded corners.

[0186] The first connecting portion 2231 is enclosed within the connecting and mating portion 212 of the base body 21 and is located near the support and positioning portion 211. The surface direction of the first connecting portion 2231 is perpendicular to the length direction of the base body 21. The mounting hole 213 on the base body 21 passes through the first clearance notch 22311 on the first connecting portion 2231, and the depth of the first clearance notch 22311 is greater than the diameter of the mounting hole 213.

[0187] The first fixing part 2232 extends from one end of the U-shaped bottom of the first connecting part 2231. The length direction of the first fixing part 2232 is consistent with the U-shaped opening direction of the first connecting part 2231, and the length of the first fixing part 2232 is the same as the width of that end of the first connecting part 2231. The first fixing part 2232 is used as the rim fixing part 222a, and its structure is the same as that of the rim fixing part 222a in Embodiment 1.

[0188] The second piece 224 is also U-shaped, and includes a second connecting part 2241 and a second fixing part 2242.

[0189] The second connecting portion 2241 is also U-shaped, having a central connecting notch 22411 and two second connecting notches 22412. The central connecting notch 22411 serves as the hollow portion described in Embodiment 1. It is located at one end of the second sheet-like member 224 in the length direction and in the middle of its width direction. It is relatively large, with its depth and width slightly smaller than the length and width of the second connecting portion 2241, respectively. Its opening direction is consistent with the length direction of the second sheet-like member 224. The two second connecting notches 22412 are smaller and symmetrically arranged on both sides of the second connecting portion 2241 in the width direction. Their opening direction is consistent with the width direction of the second sheet-like member 224. Both corners of the central connecting notch 22411 and the second connecting notch 22412 are rounded. The two ends of the second connecting portion 2241 are approximately rectangular sheets with rounded corners.

[0190] The second joint 2241 is enclosed inside the joint mating part 212 of the seat 21 and is located next to the mating notch 2121. The surface direction of the second joint 2241 is perpendicular to the thickness direction of the seat 21.

[0191] The second fixing part 2242 extends from one end of the U-shaped bottom of the second connecting part 2241. The length direction of the second fixing part 2242 is consistent with the U-shaped opening direction of the second connecting part 2241, and the length of the second fixing part 2242 is the same as the width of that end of the second connecting part 2241. The second fixing part 2242 is used as the bottom fixing part 222b of the groove, and its structure is the same as that of the bottom fixing part 222b in Embodiment 1, that is, its width is greater than the width of the first fixing part 2232.

[0192] That is, the overall structure of the first piece 223 and the second piece 224 is very similar, but the functions of the first clearance notch 22311 and the middle joining notch 22411 are different. In addition, the structure of the first piece 223 and the second piece 224 is also very similar to the structure of the two ends of the fastener 22 along the bending direction in Embodiment 1.

[0193] Furthermore, the second piece 224 has a small curvature, which is basically consistent with the curvature of the inner side of the bead seat 12. Similarly, the second piece 224 may also be flat and without this curvature.

[0194] That is, the fastener 22 in this embodiment includes a flat first sheet 223 and a second sheet 224 with a very small curvature or also being flat. For the first sheet 223, step S1-1 in this embodiment includes the following sub-steps:

[0195] Step S1-1-1': Punch notches and outer contour grooves into a flat iron strip to form a connecting piece and a fourth semi-finished piece connected to it.

[0196] Step S1-1-2': Cut the fourth semi-finished piece and the connecting piece to obtain the finished first piece 223.

[0197] For the second piece 224, step S1-1 in this embodiment includes the following sub-steps:

[0198] Step S1-1-3': Punch notches and outer contour grooves into the flat iron strip sheet to form a connecting piece and the fifth semi-finished piece connected to it;

[0199] Step S1-1-4': The fifth semi-finished piece is longitudinally pressed to give it an arc that matches the inner side of the tire bead seat of the rim.

[0200] Step S1-1-5': Cut the fifth semi-finished product from the connecting piece to obtain the finished second piece 224.

[0201] The steps S1-1-1' to S1-1-2' and steps S1-1-3' to S1-1-5' mentioned above can be performed simultaneously by two stamping devices.

[0202] It is evident that the fastener 22 in this embodiment does not require two additional longitudinal pressing processes.

[0203] In steps S1-2, the structure of the predetermined seat 513 in the die-casting apparatus 500 differs from that in Embodiment 1. It requires supporting the first sheet 223 and the second sheet 224 respectively to form the desired shape. Figure 19 The L-shaped arrangement is shown.

[0204] Since the overall shape of the disc brake mounting base 20 in this embodiment is the same as that in Embodiment 1, the subsequent steps S1-3, S2-1 to S2-3 are the same as those in Embodiment 1.

[0205] In this embodiment, the other structures and corresponding methods are the same as in Embodiment 1, so they will not be described again.

[0206] Functions and effects of Example 2

[0207] Based on the disc brake disc mounting bracket manufacturing method and disc brake hub manufacturing method provided in this embodiment, and building upon the function and effect of Embodiment 1, the use of a split-type fastener eliminates the need for two longitudinal pressing processes in the processing of the fastener, making the processing of the fastener more convenient and faster.

[0208] Furthermore, the overall shapes of the first and second pieces are very similar, and the first clearance notch and the middle joining notch, which are basically the same in shape, are used to achieve different functions. Through such ingenious design, the processing difficulty can be further reduced and the production efficiency can be improved while meeting the functional requirements.

[0209] Furthermore, since the first and second plate-shaped parts are two independent components, the distance between them can be adjusted as needed. This allows the fastener to be used with rims of different sizes and / or seats of different sizes. In other words, the same fastener can be used when manufacturing various models of disc brake hubs. Only different fastener pre-positioned seats are needed to make the distance between the two plate-shaped parts different. Therefore, the fastener has a wider range of applications, is more convenient to operate during production changeovers, and has higher production efficiency.

[0210] <Example 3>

[0211] This embodiment provides a method for manufacturing a disc brake disc mounting base and a disc brake hub. In this embodiment, the same symbols are assigned to the same constituent elements as in Embodiment 1, and the corresponding descriptions are omitted.

[0212] Compared with Embodiment 1, the difference lies in the structure of the fastener in this embodiment. The structure of the metal sheet is as follows: the metal sheet includes two vertical sidewalls and a horizontal sidewall connecting the two vertical sidewalls. A hollow groove is formed on the vertical or horizontal sidewall. The two vertical sidewalls and one horizontal sidewall form a flat U-shaped body, with the opening of the U-shaped body facing the sidewall of the rim. The screw seat covers the horizontal sidewall. The two vertical sidewalls abut against the outer surface of the bead seat of the rim. The parts of the two vertical sidewalls that abut against the rim are exposed in the screw seat. The ends of the two vertical sidewalls are welded to the outer surface of the bead seat of the rim, forming a weld joint.

[0213] Figure 20 This is a perspective view of the fastener in this embodiment.

[0214] like Figure 20 As shown, the fastener 22 (connector) of this embodiment is integrally formed from a bent sheet (metal sheet) and has an axisymmetric structure. Its cross-section along the axial direction of the rim 10 is U-shaped, and the opening of the U faces the bead seat 12 of the rim 10. The fastener 22 includes a connecting part 221 and two fixing parts 222.

[0215] The connecting portion 221 is located in the middle of the bending direction of the entire fastener 22. It is in the shape of a bent plate, and its axial cross-section of the rim 10 is also U-shaped. The width of the middle part of the connecting portion 221 in the bending direction is smaller than the width of the two ends. The middle part of the connecting portion 221 is generally flat and plate-shaped (i.e., a transverse sidewall) and has a rectangular central hole 2214 for use as a connecting hole. The two ends of the connecting portion 221 each have rectangular end connecting holes 2216.

[0216] Two fixing portions 222 extend from both ends of the bending direction of the connecting portion 221. The fixing portions 222 are rectangular plates, with their surface direction aligned with the surface direction of the corresponding end of the connecting portion 221, and their length being the same as the width of the corresponding end of the connecting portion 221. Both fixing portions 222 serve as bead seat fixing portions 222c. The straight ends of the fixing portions 222 on the sides corresponding to the connecting portion 221 form vertical sidewalls.

[0217] The outer end faces of the two bead seat fixing parts 222c are in contact with the inner side of the bead seat 12 of the rim 10, and the outer side of the outer end of each bead seat fixing part 222c is welded to the inner side of the bead seat 12 to form two strip-shaped bead seat welding parts 43 (welding point four).

[0218] The surface direction of the middle part of the joint 221 is perpendicular to the radial direction of the rim 10, so that the thickness direction of the seat 21 is consistent with the radial direction of the rim 10.

[0219] The aforementioned hollow portion is formed by the connecting part 221 and the two fixing parts 222 surrounding it. The lower part of the mounting hole 213 on the base 21 is located in the space surrounded by the connecting part 221 and the two fixing parts 222, and the lower part of the fastening rod 300 can also pass through this space.

[0220] Furthermore, the fixing part 222 in this embodiment is rectangular, but other shapes can also be used, such as L-shaped, with the outer end of the fixing part 222 in contact with the inner side of the bead seat 12; or T-shaped, with the bottom of the T-shape integral with the connecting part 221, and the outer end face of the top of the T-shape in contact with the inner side of the bead seat 12. Similarly, welding can be performed between the outer end of the L-shaped or T-shaped fixing part 222 and the inner side of the bead seat 12 to achieve the same effect.

[0221] Step S1-1 in this embodiment is basically the same as in Embodiment 1. The only difference is that the first longitudinal pressing upper module 414 and the first longitudinal pressing lower module 424 of the stamping device 400 give the sheet a bending structure corresponding to the above-mentioned fixing member 22, but the bending angle is greater than that of the fixing member 22; the second longitudinal pressing upper module 415 and the second longitudinal pressing lower module 425 give the sheet a bending structure corresponding to the above-mentioned fixing member 22 and with the same bending angle.

[0222] In step S2-1, the welding torch drive assembly 633 drives the two welding torches 631 to move to the positions where the two fixing parts 222 of the fixing member 22 contact the tire bead seat 12, and simultaneously drives the welding torches 631 to move in a straight line in the vertical direction to perform linear welding.

[0223] In this embodiment, the other structures and methods are the same as in Embodiment 1, so they will not be described again.

[0224] Functions and effects of Example 3

[0225] Based on the disc brake disc mounting base manufacturing method and disc brake hub manufacturing method provided in this embodiment, and building upon the function and effect of Embodiment 1, the fastener adopts the above-mentioned structure, making it more convenient to place and position the fastener in the die-casting mold, thereby further improving production efficiency.

[0226] <Example 4>

[0227] This embodiment provides a method for manufacturing a disc brake disc mounting base and a disc brake hub. In this embodiment, the same symbols are assigned to the same constituent elements as in Embodiment 1, and the corresponding descriptions are omitted.

[0228] Compared with Embodiment 1, the difference is that the method in this embodiment is used to manufacture disc brake mounting bases with different shapes.

[0229] Figure 21 This is a perspective view of the disc brake mounting bracket in this embodiment.

[0230] like Figure 21 As shown, the structure of the seat 21 in this embodiment is similar to that in Embodiment 1, except that the seat 21 also has a pair of strip-shaped grooves 214. The pair of strip-shaped grooves 214 are located at both ends of one end of the seat 21 in the thickness direction, and are on the same side as the mating notch 2121. The strip-shaped grooves 214 are straight grooves, extending and penetrating along the length direction of the seat 21. The bottom and both sides of the groove opening of the strip-shaped grooves 214 are arc-shaped, i.e., have rounded corners. Looking at the cross-section along the length direction of the seat 21, the cross-section of the support and positioning part 211 of the seat 21 is a T-shape with a relatively wide line width and rounded corners, while the cross-section of the strip-shaped grooves 214 is a W-shape with rounded corners. The dimensions of the strip-shaped grooves 214 are relatively small; their depth along the width direction and their depth along the thickness direction of the seat 21 are significantly smaller than the width and thickness of the seat 21, respectively.

[0231] The two corners 2221 of the outer end of the fixing part 222 (rim fixing part 222a) of the seat body 21 are located outside the slots of a pair of strip grooves 214, and the arrangement of the strip grooves 214 makes the area of ​​these two corners 2221 exposed outside the seat body 21 larger.

[0232] The die-casting mold cavity of this embodiment has a structure corresponding to the base 21 of this embodiment, that is, the first base groove 5421 has a pair of stepped protrusions facing the inside of the groove. Accordingly, in step S1-2-2, when the fixing member 22 is placed into the die-casting mold cavity and the outer end of the fixing part 222 is embedded in the second positioning groove, the pair of stepped protrusions can better support the fixing member 22, making the placement of the fixing member 22 easier.

[0233] In this embodiment, the other structures and methods are the same as in Embodiment 1, so they will not be described again.

[0234] Functions and effects of Example 4

[0235] Based on the disc brake disc mounting base manufacturing method and disc brake hub manufacturing method provided in this embodiment, and building upon the effects of Embodiment 1, the mounting body adopts the above-mentioned structure, making it easier to place the fixing parts in the corresponding die-casting mold, thereby further improving production efficiency.

[0236] The above embodiments are merely illustrative of specific implementations of the present invention, and the present invention is not limited to the scope of the description of the above embodiments. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are only for illustrating the principles of the present invention. Various changes and modifications can be made to the present invention without departing from the spirit and scope thereof, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for manufacturing a disc brake disc mounting base, used to manufacture a disc brake disc mounting base, wherein the disc brake disc mounting base is used to be disposed on the rim of a wheel hub for mounting a disc brake disc, characterized in that, Includes the following steps: Step S1-1: Manufacture a fastener made of the first material; Step S1-2: A base body made of a second material is formed by casting to be combined with the fastener. The fastener has the following features: One or more connecting portions, which are engaged with the seat body; and One or more fixing parts protrude from the seat body and are fixed to corresponding predetermined positions on the wheel rim. The seat body has: The mating part engages with the fixing part and mates with the wheel rim; and The support and positioning part has a positioning end face for supporting and positioning the disc brake disc; The first material is iron. The fastener is in the form of a bent sheet. In step S1-1, the fastener is manufactured by stamping. The second material is any one of aluminum alloy, magnesium alloy, aluminum-magnesium alloy, copper alloy, copper-zinc alloy, or industrial plastic. The base is a column with a missing corner. In steps S1-2, the base is formed by die casting.

2. The method for manufacturing a disc brake disc mounting base according to claim 1, characterized in that: in, The fastener is integrally formed from a bent sheet, in the shape of a chamfered L, and has a central hole. Step S1-1 includes the following sub-steps: Step S1-1-1: Punch out through holes corresponding to the central hole and outer contour grooves corresponding to the outer contour of the fastener on a flat sheet, thereby forming the first semi-finished sheet connected to the connecting piece. Step S1-1-2: The first semi-finished sheet is subjected to longitudinal pressing to form a bent second semi-finished sheet connected to the connecting piece; Step S1-1-3: Perform secondary longitudinal pressing on the second semi-finished sheet to form a third semi-finished sheet whose bending angle on the connecting piece is consistent with the bending angle of the fastener. Step S1-1-4: Cut the third semi-finished piece and the connecting piece to obtain the fastener.

3. The method for manufacturing a disc brake disc mounting base according to claim 2, characterized in that: in, In step S1-1, the stamping process is performed using a stamping device. The stamping device includes a matching upper die mechanism and a lower die mechanism. The upper die mechanism includes a punching upper die assembly, a first longitudinal pressing upper die assembly, a second longitudinal pressing upper die assembly, and a cutting upper die assembly. The lower die mechanism includes a punching-cooperating lower die assembly that cooperates with the upper punching die assembly to perform the punching, a first longitudinal pressing-cooperating lower die assembly that cooperates with the first longitudinal pressing-forming upper die assembly to perform the first longitudinal pressing-forming, a second longitudinal pressing-cooperating lower die assembly that cooperates with the second longitudinal pressing-forming upper die assembly to perform the second longitudinal pressing-forming, and a cutting-cooperating lower die assembly that cooperates with the upper cutting die assembly to perform the cutting. When the upper die mechanism and the lower die mechanism cooperate to perform a stamping, they complete one punching, one first longitudinal pressing, one second longitudinal pressing, and one cutting at different positions on the sheet.

4. The method for manufacturing a disc brake disc mounting base according to claim 1, characterized in that: in, The fastener includes a first sheet and a second sheet, both U-shaped. The second piece has a curvature corresponding to the rim body. Step S1-1 includes the following sub-steps: Step S1-1-1': A first outer contour groove corresponding to the outer contour of the first sheet is punched out on the flat first sheet, thereby forming a fourth semi-finished sheet connected to the first connecting piece. Step S1-1-2': Cut the fourth semi-finished piece and the first connecting piece to obtain the first sheet-like part; Step S1-1-3': A second outer contour groove corresponding to the outer contour of the second sheet is punched out on the flat second sheet, thereby forming a fifth semi-finished sheet connected to the second connecting piece; Step S1-1-4': The fifth semi-finished product sheet is longitudinally pressed to give it the curvature; Step S1-1-5': Cut the fifth semi-finished piece and the second connecting piece to obtain the second sheet-like component.

5. The method for manufacturing a disc brake disc mounting base according to claim 1, characterized in that: in, In steps S1-2, the base body is formed by die casting using a die casting device. The die-casting apparatus includes a die-casting machine and a die-casting mold. The die-casting mold includes a fixed mold and a movable mold. One of the fixed mold and the movable mold has a plurality of first seat grooves and a positioning groove located on one side of each of the first seat grooves. The other of the fixed mold and the movable mold has a plurality of second seat grooves corresponding to the first seat grooves, for combining with the corresponding first seat grooves to form a seat cavity. Step S1-2 includes the following sub-steps: Step S1-2-1: Arrange the plurality of fasteners in a configuration corresponding to the plurality of first seat grooves; Step S1-2-2: Place the arranged plurality of fasteners into the plurality of first seat grooves, and make the fixing part of the fasteners embed into the corresponding positioning groove; Step S1-2-3: The die-casting machine closes the die-casting mold and injects the second material into the multiple seat cavities for die casting to form the seat of the disc brake mounting base; Step S1-2-4: The die-casting machine opens the die-casting mold; Step S1-2-5: Remove the plurality of disc brake mounting seats from the die-casting mold.

6. A method for manufacturing a disc brake hub, used to manufacture a disc brake hub capable of mounting a disc brake disc, characterized in that, Includes the following steps: Step S2-1: Fix multiple disc brake mounting brackets to multiple predetermined positions on the rim of the wheel hub body to form the disc brake wheel hub. Step S2-2: The positioning end faces of the plurality of disc brake mounting seats are machined so that the plurality of positioning end faces are coplanar and perpendicular to the axial direction of the wheel hub body. The disc brake mount is manufactured by the disc brake mount manufacturing method as described in any one of claims 1-5.

7. The method for manufacturing a disc brake wheel hub according to claim 6, characterized in that: in, In step S2-1, welding is performed between the fixing part of the fixing member of the disc brake disc mount and the corresponding predetermined position, thereby fixing the disc brake disc mount in the corresponding predetermined position. The predetermined position is the bottom of the groove of the wheel rim, the bead seat, the rim flange, or a combination thereof.

8. The method for manufacturing a disc brake wheel hub according to claim 6, characterized in that: in, In step S2-2, the positioning end faces of the seats of the plurality of disc brake mounting seats are machined by turning, so that the plurality of positioning end faces are coplanar.

9. The method for manufacturing a disc brake hub according to any one of claims 6, characterized in that, Also includes: Step S2-3: Machining mounting holes on the bases of the plurality of disc brake mounting seats. The mounting hole extends in a direction perpendicular to the positioning end face of the base, and the mounting opening of the mounting hole is located on the positioning end face.

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