Automobile wheel hub processing technology and wheel hub processing device

Abstract

The present application relates to the technical field of hub processing, and provides an automobile hub processing technology and a hub processing device, which specifically comprises the following steps: cutting a plate material to a required size, then curling the plate material into a ring by using a curling device and welding the ring, heating an upper segment of the welded hub to a red state, transferring the upper segment to a mold press for mold forming, and rolling the outer part of the upper segment on a rolling device after cooling to room temperature.The upper segment of the hub is one third of a complete hub, and is welded with a middle segment and a lower segment of the hub to form a complete hub body.The upper segment of the hub is processed by cutting, mold pressing and rolling, thereby solving the technical problem of raw material waste in the hub processing process in the prior art.

Description

Technical Field

[0001] This invention relates to the field of wheel hub processing technology, specifically to an automotive wheel hub processing process and wheel hub processing apparatus. Background Technology

[0002] A car wheel rim is a cylindrical metal component mounted on an axle, supporting the tire from its inner contour. It is also known as a steel rim or wheel. As a crucial part that directly contacts the tire, the wheel rim not only supports the tire but also guides its direction of travel. A wheel rim consists of an upper section, a middle section, and a lower section.

[0003] In existing technology, the processing technology for the upper section of the wheel hub involves first rolling a steel billet into shape, then rolling it into a coil using a coiling machine, welding it to form a rough blank for the upper section of the wheel hub, and finally performing finishing machining. However, the following problems exist in the production process: 1. The head and tail sections of material need to be removed during the rolling process, and the cutting method used in machining results in material waste, with a loss rate of approximately 10% to 15%; 2. Roundness deviations and uneven circumferences are easily generated during the coiling and welding processes, thus affecting the fit between the wheel hub and the tire; 3. The welded joint is a structural weak point, and it is prone to cracking and weld detachment when subjected to impact or long-term stress. Summary of the Invention

[0004] To overcome the above-mentioned defects, embodiments of the present invention provide an automobile wheel hub processing technology and wheel hub processing device, which solves the technical problem of material waste generated during the processing of the upper section of the wheel hub in the prior art.

[0005] According to one aspect, at least one embodiment of the present invention provides a process for manufacturing automobile wheel hubs, comprising:

[0006] S100, cuts the board material to the preset size to obtain the board material;

[0007] S200, the sheet metal is rolled into a closed ring using a rolling device and then welded to obtain a blank for the upper section of the wheel hub.

[0008] S300, the upper section blank of the wheel hub is heated to a reddish-brown state to obtain a reddish-brown upper section blank of the wheel hub;

[0009] S400, the red-red state wheel hub upper section blank is transferred to the forming device for forming processing to obtain a refined wheel hub upper section;

[0010] S500, the two refined wheel hub upper sections are axially joined and then welded into a single wheel hub upper section;

[0011] S600, the upper section of the wheel hub, the middle section of the wheel hub, and the lower section of the wheel hub are combined to form a wheel hub.

[0012] For example, in at least one embodiment of the present invention, an automotive wheel hub processing technology is provided, wherein step S400 specifically includes:

[0013] S410, the red-red state wheel hub upper section blank is transferred to the molding device for molding to obtain the initial product of the wheel hub upper section;

[0014] S420, the initial product of the upper section of the wheel hub is processed by a rolling device to create grooves on the outer wall of the upper section of the wheel hub, so as to obtain the refined upper section of the wheel hub.

[0015] For example, in at least one embodiment of the present invention, an automotive wheel hub processing technology further includes the following step between S410 and S420:

[0016] S415, the initial product of the upper section of the wheel hub is cooled to room temperature.

[0017] For example, at least one embodiment of the present invention provides a car wheel hub processing process, wherein S410 is used to mold and shape the size and roundness of the upper section blank of the wheel hub, and can form a rolled edge on the upper section of the wheel hub, and S420 is used to process the groove on the upper section of the wheel hub for installing the tire wire ring.

[0018] According to another aspect, at least one embodiment of the present invention also provides an automotive wheel hub processing apparatus for the finishing of the upper section of a refined wheel hub in the aforementioned automotive wheel hub processing technology, comprising:

[0019] Frame,

[0020] A mold base is rotatably mounted on the frame. The mold base is used to support the inner wall of the upper section of the hub. The mold base has an inner groove.

[0021] The first sliding seat is slidably disposed on the frame and located on one side of the mold base, and the first sliding seat can slide close to the mold base;

[0022] A spinning wheel is rotatably mounted on the first sliding seat. The outer periphery of the spinning wheel has a convex ring that matches the inner groove. The spinning wheel can approach the mold base under the drive of the first sliding seat, so as to form the upper section of the refined wheel hub under the cooperation of the convex ring and the inner groove.

[0023] For example, at least one embodiment of the present invention provides an automotive wheel hub processing apparatus, which further includes:

[0024] The second sliding seat is slidably mounted on the frame, and the first sliding seat and the second sliding seat are respectively located on both sides of the mold base;

[0025] The top support wheel is rotatably mounted on the second sliding seat. The top support wheel can support the outer wall of the upper section of the hub on the mold base under the drive of the second sliding seat. The supporting position of the top support wheel on the upper section of the hub corresponds to the spinning position of the spinning wheel, so that the top support wheel can shape the spinning position of the upper section of the hub.

[0026] For example, at least one embodiment of the present invention provides an automotive wheel hub processing apparatus, which further includes:

[0027] A lifting frame is mounted on the frame body and can be lowered to approach the mold base.

[0028] The rotating pressure plate is rotatably mounted on the lifting frame. The axis of the rotating pressure plate coincides with the axis of the mold base. The rotating pressure plate can be lowered by the lifting frame and moved closer to the mold base to press against the top of the upper section of the wheel hub on the mold base.

[0029] For example, at least one embodiment of the present invention provides an automotive wheel hub processing apparatus, wherein a connecting assembly is provided between the mold base and the frame, the connecting assembly comprising:

[0030] The connecting seat is sleeved on the outer peripheral wall of the mold base;

[0031] At least two arc-shaped pressure plates are slidably disposed on the frame and evenly distributed around the mold base. The bottom of each arc-shaped pressure plate has a guide slope. The arc-shaped pressure plate can slide close to the connecting seat and press the connecting seat against the frame through the guide slope.

[0032] For example, in at least one embodiment of the present invention, an automotive wheel hub processing apparatus is provided, wherein the connecting assembly is further connected to a triggering assembly, the triggering assembly comprising:

[0033] A trigger top ring is fitted onto the outer wall of the mold base;

[0034] A trigger slider is raised and lowered on the arc-shaped pressure plate. The trigger slider can move closer to the trigger top ring under the action of the arc-shaped pressure plate and move downward under the pushing action of the trigger top ring.

[0035] A trigger is disposed on the arc-shaped pressure plate and located below the trigger slider. The trigger can be activated by the downward pressure of the trigger slider and send a trigger signal to the controller.

[0036] For example, in at least one embodiment of the present invention, an automotive wheel hub processing apparatus is provided, wherein the trigger top ring is lifted and lowered on the outer wall of the mold base, and the connecting assembly further includes:

[0037] Several limiting blocks are provided, all of which are disposed on the outer wall of the mold base. The limiting blocks can support the trigger top ring.

[0038] An elastic pusher is disposed on the outside of the mold base. The two ends of the elastic pusher act on the mounting platform on the outer wall of the mold base and the trigger top ring, respectively. The elastic pusher can provide the force for the trigger top ring to slide against the limiting block.

[0039] An elastic support is disposed on the arc-shaped pressure plate. The two ends of the elastic support act on the trigger slider and the arc-shaped pressure plate, respectively. The elastic support can provide the trigger slider with an upward sliding force.

[0040] The beneficial effects of this invention are as follows:

[0041] In this invention, by heating the upper section of the wheel hub to a red-hot state after welding before molding, the weld seam is not only compacted, reducing internal defects such as porosity and cracks, resulting in a denser joint, but also allows for better fusion between the weld seam and the base material, while refining the grain size. This improves the upper section of the wheel hub's ability to withstand impact and long-term stress, reducing the occurrence of cracking and weld detachment, extending the wheel hub's service life, and ensuring vehicle safety. Furthermore, the increased plasticity of the heated upper section allows molding to release residual welding stress, preventing deformation or cracking during subsequent use.

[0042] By using sheet metal cutting, molding, and tumbling processes, the waste of raw materials caused by rolling and machining is avoided, and the loss rate can be reduced from 10%-15% to less than 3% compared to existing technologies.

[0043] By first rolling and then molding the sheet metal into a coil and then welding it, the sheet metal can be transformed from a plate shape into the upper section of the wheel hub. This allows it to be fitted to the molding equipment, enabling the molding equipment to form the wheel hub in one step. This completes the initial processing of rolling and welding, as well as the final molding process. This method effectively improves the roundness and circumferential uniformity of the upper section of the wheel hub, reduces shape deviations, enhances the fit between the upper section of the wheel hub and the tire, improves the overall quality and performance of the wheel hub, and reduces safety hazards caused by poor fit. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of the present invention and these drawings without any creative effort.

[0045] Figure 1 This is a schematic diagram of the wheel hub machining process;

[0046] Figure 2 A schematic diagram of the upper section structure of a precision-engineered wheel hub;

[0047] Figure 3 This is a schematic diagram of the overall structure in one embodiment of the present invention;

[0048] Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle;

[0049] Figure 5 for Figure 3 Schematic diagram of the exploded structure in the embodiment;

[0050] Figure 6 for Figure 5 Enlarged structural diagram at point B;

[0051] Figure 7 This is a schematic diagram of the overall structure in another embodiment of the present invention;

[0052] Figure 8 for Figure 7 Enlarged structural diagram at point C;

[0053] Figure 9 for Figure 7 A schematic diagram of the structure of the arc-shaped pressure plate, elastic support, trigger, and trigger slider in the embodiment;

[0054] In the diagram: 100, frame; 200, mold base; 210, inner groove; 300, first sliding seat; 310, spinning wheel; 311, convex ring; 410, second sliding seat; 420, top support wheel; 510, lifting frame; 520, rotating pressure plate; 600, connecting assembly; 610, connecting seat; 620, arc-shaped pressure plate; 630, trigger top ring; 640, trigger sliding component; 650, trigger component; 660, limit block; 670, elastic push component; 680, elastic support component; 700, upper section of refined hub. Detailed Implementation

[0055] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it.

[0056] To keep the drawings concise, each drawing only schematically shows the parts relevant to the invention; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0057] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0058] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0059] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0060] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0061] like Figures 1-2 As shown, a car wheel hub processing technology includes the following specific steps: First, make an overall design drawing of the wheel hub according to the requirements, and record the required thickness and size of the upper part of the wheel hub as the preset thickness and preset diameter. Then, calculate the weight based on the design thickness and preset diameter combined with the density of the selected raw materials and record it as the preset weight.

[0062] S100: In the production process, low-carbon steel plates are first selected as raw materials, with a thickness between 1.6mm and 12mm. Appropriate plates are cut according to the preset thickness, preset diameter, and preset weight, combined with the plate density of the raw materials, to obtain the sheet material. The cutting standard for the sheet material is: the ratio of the preset weight to the weight of the cut sheet material is between 0.98 and 1.01, and the width of the sheet material, i.e., the axial length after rolling, has an error of no more than ±2mm compared to the length of the axially unfolded material of the upper section of the hub.

[0063] S200: After the sheet metal is cut, it is rolled into a closed ring using a hub curling machine and then welded to obtain the upper section blank of the hub. The curling machine mainly consists of a curling roller, a drive motor, and a control system. The curling roller is usually made of high-strength alloy steel, and its surface is hardened and ground to ensure high wear resistance and surface precision. The drive motor provides power to the curling roller, and the control system can precisely adjust key parameters such as the rotation speed and curling angle of the curling roller. For example, for the curling requirements of upper section of hubs with different diameters, a hub curling machine with a maximum curling diameter of 1200mm and a curling accuracy of ±0.3mm can be selected. The hub curling machine here can be any existing technology and will not be described in detail. It should be emphasized that the sheet metal curling is a rough processing. As long as the diameter of the curled sheet metal is no greater than 0.02~0.04D, where D is the preset diameter of the upper section of the hub, it is acceptable. This allows the curled upper section of the hub to enter the molding press for molding and shaping.

[0064] After the sheet metal is rolled into a coil, it is welded using inert gas shielded welding (such as argon arc welding). After welding, the raised weld beads on the inner and outer walls of the upper section of the wheel hub blank are ground smooth.

[0065] The S300 uses a heating furnace to heat the upper section of the wheel hub blank. During the heating process, a temperature sensor monitors the temperature change of the upper section of the wheel hub blank in real time. When the upper section of the wheel hub blank reaches a reddish-brown state (generally at a temperature of 800-1200℃), heating is stopped in time to ensure the accuracy and stability of the heating temperature of the upper section of the wheel hub blank, with the temperature deviation controlled within ±20℃. The final product is a reddish-brown upper section of the wheel hub blank.

[0066] Alternatively, the heating furnace can be a gas-fired heating furnace or a medium-frequency heating furnace.

[0067] S400: The red-hot wheel hub upper section blank is transferred to a forming device for forming processing to obtain a refined wheel hub upper section 700. Specific steps include: S410, transferring the red-hot wheel hub upper section blank to a molding device for molding. A molding machine is used to mold the heated wheel hub upper section, which is equipped with the forming mold required for the wheel hub upper section. Under the molding action, the red-hot wheel hub upper section forms end curls and precisely shapes the inner and outer walls. During the molding process, the preset holding time is strictly adhered to to ensure the wheel hub upper section is fully formed. After molding, the pressure is slowly released, and the wheel hub upper section is removed to obtain the initial wheel hub upper section. The initial wheel hub upper section is allowed to cool to room temperature in a natural environment. During the cooling process, care is taken to avoid external impacts to the wheel hub upper section to ensure dimensional stability.

[0068] S420: After cooling, the initial upper section of the wheel hub is machined using a rolling device to create grooves on the outer wall of the upper section, ultimately yielding a refined upper section 700. The rolling device primarily forms grooves on the outer wall of the upper section for mounting tire wire rings. Specifically, the initial upper section is placed on a mold in the rolling device, which has an inner groove that matches the groove. Then, the outer rolling rollers are used to press and form the grooves on the outer wall of the upper section.

[0069] The S500 wheel hub is made by welding the upper section (700), the middle section, and the lower section together to form a complete wheel hub.

[0070] Similarly, the middle and lower sections of the wheel hub can also utilize the same manufacturing process as the upper section. For ease of description, only the upper section will be used below; the middle and lower sections can be substituted with the same technology.

[0071] By heating the upper section of the wheel hub to a red-hot state after welding before molding, the weld seam is not only compacted, reducing internal defects such as porosity and cracks, resulting in a denser joint, but also allows for better fusion between the weld seam and the base material, while refining the grain size. This improves the upper section of the wheel hub's ability to withstand impacts and long-term stress, reducing the occurrence of cracking and weld detachment, extending the wheel hub's service life, and ensuring vehicle driving safety. Furthermore, the increased plasticity of the heated upper section allows molding to release residual welding stress, preventing deformation or cracking during subsequent use.

[0072] By using sheet metal cutting, molding, and tumbling processes, the waste of raw materials caused by rolling and machining is avoided, and the loss rate can be reduced from 10%-15% to less than 3% compared to existing technologies.

[0073] By first rolling and then molding the material, the sheet metal is transformed from a plate shape into the upper section of the wheel hub through rolling and welding. This allows it to be fitted to the molding equipment, enabling it to be molded in one step. This completes the initial processing of rolling and welding, as well as the final molding process. This method effectively improves the roundness and circumferential uniformity of the upper section of the wheel hub, reduces shape deviations, enhances the fit between the wheel hub and the tire, improves the overall quality and performance of the wheel hub, and reduces safety hazards caused by poor fit.

[0074] like Figures 3-6The diagram illustrates an automotive wheel hub processing apparatus according to an embodiment of the present invention, used for rolling the outer ring of the upper section of an automotive wheel hub in the wheel hub processing technology. It includes a frame 100, a mold base 200, a first sliding seat 300, and a spinning wheel 310. The frame 100 is generally shaped as a support seat or support frame, providing support for the entire processing apparatus. The mold base 200 is generally disc-shaped and rotatably connected to the frame 100 via bearings, allowing the frame 100 to rotate smoothly on the frame. The dimensions of the mold base 200 are designed according to the inner diameter and width of the upper section of the wheel hub. Utilizing the inwardly protruding irregular shape on the upper section of the wheel hub, the mold base 200 can be fitted onto the upper section of the wheel hub, with the inwardly protruding irregular shape allowing the mold base 200 to support the upper section. The outer wall of the mold base 200 fits against the inner wall of the upper section of the wheel hub, enabling the mold base 200 to center the upper section of the wheel hub, and the protrusions on the inner wall of the upper section of the wheel hub provide axial support. The outer wall of the mold base 200 has an inner groove 210, the position and size of which are determined according to the structure of the upper section of the pre-set hub. The mold base 200 can be driven to rotate by an independent drive device, and the mold base 200 can drive the upper section of the hub fitted on the mold base 200 to rotate.

[0075] The first sliding seat 300 is connected to the frame 100 via a slide rail and a slider. The slide rail is mounted on the frame 100, and the slider is fixed to the bottom of the first sliding seat 300, allowing the first sliding seat 300 to slide smoothly along the slide rail on the frame 100. The device driving the first sliding seat 300 to slide can be an electric lead screw, a hydraulic cylinder, or a pneumatic cylinder. These driving devices can drive the first sliding seat 300 to slide closer to or further away from the mold base 200.

[0076] The spinning roller 310 is rotatably mounted on the first sliding seat 300 near the mold base 200 via a bearing. The outer wall of the spinning roller 310 has a convex ring 311 that is adapted to the mold base 200. The first sliding seat 300 drives the spinning roller 310 to approach the mold base 200. The convex ring 311 on the outer wall of the spinning roller 310 presses the upper section of the hub fitted on the mold base 200 into the inward groove 210, thereby forming a groove on the outer wall of the upper section of the hub for placing the tire wire ring.

[0077] Working Principle: First, the upper section of the wheel hub to be processed is placed on the mold base 200. The mold base 200 supports the inner wall of the upper section of the wheel hub, keeping it stable during processing. The drive mechanism of the mold base 200 is activated, causing the mold base 200 to rotate the upper section of the wheel hub. Then, the drive mechanism of the first sliding seat 300 is activated, causing the first sliding seat 300 to slide closer to the mold base 200. As the first sliding seat 300 approaches, the spinning roller 310 also gradually approaches the upper section of the wheel hub on the mold base 200. When the convex ring 311 of the spinning roller 310 contacts the upper section of the wheel hub, it continues to push the first sliding seat 300, and the convex ring 311 begins to compress the upper section of the wheel hub. Because the inner groove 210 of the mold base 200 and the convex ring 311 are mutually compatible, under the rotation of the spinning roller 310 and the compression of the convex ring 311, the outer ring of the upper section of the wheel hub gradually undergoes plastic deformation and is processed into the desired shape. During the processing, the mold base 200 rotates continuously, so that the upper part of the hub is evenly stressed in the circumferential direction, ensuring the rolling quality of the outer ring of the upper part of the hub.

[0078] The inner groove 210 of the mold base 200 and the convex ring 311 of the spinning wheel 310 can ensure that the upper part of the wheel hub undergoes plastic deformation in a predetermined shape during the rolling process, thereby improving the processing accuracy and effectively controlling the dimensional and shape accuracy of the outer ring of the upper part of the wheel hub, thus meeting the accuracy requirements of automobile wheel hubs.

[0079] The mold base 200 supports the inner wall and one end face of the upper section of the hub, providing a stable processing foundation for the upper section of the hub, reducing shaking and deformation of the upper section of the hub during processing, and further ensuring processing quality. At the same time, the first sliding seat 300, through the connection of the slide rail and the slider, can smoothly drive the spinning wheel 310 to approach and squeeze the upper section of the hub, ensuring the stability of the processing.

[0080] By using a rotating die holder 200 and a spinning wheel 310, extrusion processing is performed while the upper part of the hub rotates, which can quickly roll the outer ring of the upper part of the hub, improving processing efficiency. Compared with traditional turning processing, it can not only reduce processing time, but also reduce material consumption.

[0081] refer to Figure 3 and Figure 5 In some embodiments, an automotive wheel hub processing apparatus further includes a second sliding seat 410 and a top support wheel 420. The second sliding seat 410 is also connected to the frame 100 via a slide rail and a slider. The guide rail of the second sliding seat 410 is mounted on the frame 100. Optionally, the slide rail of the second sliding seat 410 is parallel to the slide rail of the first sliding seat 300 to ensure that the sliding direction of the second sliding seat 410 corresponds to that of the first sliding seat 300 and is perpendicular to the central axis of the mold base 200. The slider is disposed on the second sliding seat 410. The device for driving the second sliding seat 410 to slide is similar to that of the first sliding seat 300 and can be an electric lead screw, a hydraulic cylinder, or a pneumatic cylinder.

[0082] The top support wheel 420 is rotatably mounted on the second sliding seat 410 near the mold base 200 via a bearing. The bearing seat is mounted on the bracket of the second sliding seat 410 to ensure that the top support wheel 420 can rotate flexibly and remain stable under high-speed rotation and high pressure. The top support wheel 420 is a smooth-walled cylinder with a diameter smaller than the outer diameter of the upper section of the hub. Its width is determined according to the width of the spinning position of the upper section of the hub and should be greater than the width of the spinning position. The top support wheel 420 can provide support at the forming position after the spinning wheel is pressed on the upper section of the hub, so that the outer wall of the upper section of the hub can fit against the inner wall of the mold base 200, avoiding the roundness of the upper section of the hub being affected by spinning deformation. Therefore, the support of the top support wheel 420 is fixed at the spinning position of the spinning wheel 310. Optionally, the height of the first sliding seat 300 and the second sliding seat 410 can be set to be the same, and then the spinning wheel 310 and the top support wheel 420 can be set at the same height.

[0083] Working Principle: When performing outer ring roll forming on the upper section of the wheel hub, the upper section to be processed is first placed on the mold base 200. The mold base 200 supports the inner wall of the upper section to keep it stable. Simultaneously, the drive device of the mold base 200 is activated, causing the mold base 200 to rotate the upper section of the wheel hub. Then, the drive device of the first sliding seat 300 is activated, causing the first sliding seat 300 to slide closer to the mold base 200. The spinning wheel 310 then moves closer to the upper section of the wheel hub and applies pressure to the outer wall of the upper section of the wheel hub for spinning processing. At the same time, the drive device of the second sliding seat 410 is activated, causing the second sliding seat 410 to slide closer to the mold base 200. The top support wheel 420 then moves closer to the upper section of the wheel hub. When the top support wheel 420 contacts the outer wall of the upper section of the wheel hub, the second sliding seat 410 is pushed further, causing the top support wheel 420 to apply a supporting force to the outer wall of the upper section of the wheel hub. Since the support position of the top support wheel 420 on the upper section of the hub corresponds to the spinning position of the spinning wheel 310, the top support wheel 420 can provide support force from the other side of the upper section of the hub during the spinning process of the spinning wheel 310 spinning the upper section of the hub, so that the upper section of the hub can fit against the inner wall of the mold base 200, thereby ensuring the roundness of the upper section of the hub.

[0084] Under the combined action of the spinning force of the spinning roller 310 and the supporting force of the top support roller 420, the upper section of the hub experiences more uniform force in the circumferential direction, effectively preventing the roundness of the upper section of the hub from being affected by spinning deformation. This ensures that the upper section of the hub always fits against the inner wall of the mold base 200, thereby guaranteeing the roundness accuracy of the upper section of the hub. Throughout the entire processing, the mold base 200 rotates continuously. The first sliding seat 300 and the second sliding seat 410, according to the requirements of the processing technology, control their sliding positions and speeds through the drive device, and coordinately adjust the contact position and pressure between the spinning roller 310 and the top support roller 420 and the upper section of the hub, ensuring that the rolling process of the outer ring of the upper section of the hub can be completed with high quality and high efficiency.

[0085] refer to Figure 3 and Figure 5 In some embodiments, an automotive wheel hub processing apparatus further includes a lifting frame 510 and a rotating pressure plate 520. The lifting frame 510 is connected to the frame body 100 via a guide rail and a slider. The guide rail is vertically mounted on the frame body 100, and optionally, the guide rail can be cylindrical. The lifting frame 510 has limiting holes adapted to the cylindrical guide rail, thereby ensuring the stability of the lifting frame 510 in the vertical direction. The driving device for the lifting frame 510 can be a hydraulic cylinder, a pneumatic cylinder, or an electric lead screw.

[0086] The rotating pressure plate 520 is mounted on the lifting frame 510 via bearings. The rotating pressure plate 520 is designed as a circular plate structure with a diameter slightly larger than the outer diameter of the upper section of the hub, ensuring that it can cover the entire upper surface of the upper section of the hub when pressing against it, thus providing uniform pressure.

[0087] Working Principle: When processing the upper section of an automobile wheel hub, the upper section to be processed is first placed on the mold base 200, which provides support and positioning. Then, the drive mechanism of the lifting frame 510 is activated, causing it to descend along the guide rail towards the mold base 200. As the lifting frame 510 descends, the rotating pressure plate 520 also approaches the upper section of the wheel hub. When the rotating pressure plate 520 descends to a certain position, its lower end face contacts the upper end face of the upper section of the wheel hub. The lifting frame 510 continues to descend, and the rotating pressure plate 520 begins to apply pressure to the upper end face of the upper section of the wheel hub. Because the axis of the rotating pressure plate 520 coincides with the axis of the mold base 200, and the rotating pressure plate 520 can rotate on the lifting frame 510, it rotates along with the upper section of the wheel hub as the mold base 200 rotates, continuously applying stable pressure to the upper end face of the upper section of the wheel hub.

[0088] The downward pressure of the rotating pressure plate 520 can prevent the upper section of the wheel hub from shifting or jumping upward due to the force of the spinning roller 310 and the top support roller 420 during the processing, thus ensuring the stability of the upper section of the wheel hub during the processing and helping to improve the processing accuracy of the upper section of the wheel hub.

[0089] refer to Figure 7 and Figure 8Based on the above embodiments, to facilitate the replacement of the mold base 200, in another embodiment, a connecting assembly 600 is provided between the mold base 200 and the frame 100. The connecting assembly 600 includes a connecting seat 610 and an arc-shaped pressure plate 620. The connecting seat 610 is fixed to the outer wall of the mold base 200 by welding or bolting. The connecting seat 610 is annular in shape and is connected to the mold base 200 by a sleeve connection. The arc-shaped pressure plate 620 is arc-shaped and its diameter is larger than the outer diameter of the connecting seat 610. There are at least two arc-shaped pressure plates 620, which are evenly distributed around the mold base 200. Corresponding sliding grooves are provided on the frame 100. A slider is installed at the bottom of the arc-shaped pressure plate 620. The slider cooperates with the sliding groove, allowing the arc-shaped pressure plate 620 to slide smoothly on the frame 100. The axis of the arc-shaped pressure plate 620 coincides with the axis of the mold base 200 at its installation position on the frame 100.

[0090] A guide slope is machined between the end of the arc-shaped pressure plate 620 near the mold base 200 and its bottom. The height of the guide slope gradually decreases in the direction away from the arc-shaped pressure plate 620. When the arc-shaped pressure plate 620 slides close to the mold base 200, several arc-shaped baffles can position the mold base 200 from different circumferential directions. After several arc-shaped pressure plates 620 are pressed against the mold base 200, the arc-shaped baffles begin to press down on the mold base 200 by relying on the guide slope, so that the mold base 200 is tightly attached to the frame 100, thereby ensuring that the inner groove 210 on the mold base 200 matches the position of the convex ring on the spinning wheel 310. Each arc-shaped pressure plate 620 is driven by an independent drive device, and each arc-shaped pressure plate 620 is at the same distance from the axis. Each drive device starts and stops simultaneously, so that several arc-shaped pressure plates 620 can simultaneously push the mold base 200 from different directions.

[0091] Optionally, the bottom of the mold base 200 can be provided with several transmission grooves, which can be adapted to the transmission blocks on the drive device. When the mold base 200 is placed on the frame 100, the transmission blocks enter the transmission grooves, thereby enabling the drive device to drive the mold base 200 to rotate. To accommodate the wear between the mold base 200 and the arc-shaped pressure plate 620 caused by the rotation of the mold base 200, a slope adapted to the guide slope can be machined on the connecting seat 610. This allows the two surfaces of the mold base 200 to be subjected to friction during rotation, thereby avoiding damage to the guide slope caused by wear between the sharp edges and the guide slope.

[0092] The mold base 200 is securely connected to the frame 100 via the connecting component 600, effectively limiting the shaking and displacement of the mold base 200 during processing, improving its stability, and thus ensuring the accuracy and quality of the upper section of the wheel hub processing. Compared to traditional bolt connections, this method is easier for operators to use and facilitates quick assembly and disassembly of the mold base 200 on the frame 100.

[0093] Furthermore, the connecting assembly 600 also includes a trigger top ring 630, a trigger slider 640, and a trigger 650. The trigger top ring 630 is mounted on the outer wall of the mold base 200 by welding or fastener connection. The trigger slider 640 has a plate-like structure. Specifically, it is configured such that an upwardly extending mounting seat is provided on the top of the arc-shaped pressure plate 620, and a vertical guide groove is provided on the mounting seat. The trigger slider 640 is mounted on the mounting seat by a slider adapted to the guide groove. Optionally, the guide groove is a dovetail groove penetrating the top surface of the mounting seat.

[0094] The upper end face of the trigger slider 640 is designed as an inclined or curved surface that contacts the trigger top ring 630, so that during the sliding of the curved pressure plate 620 towards the mold base 200, the trigger slider 640 can withstand the reverse pushing force of the contact top ring 630 and slide downward. The lower end face of the trigger slider 640 is provided with a protrusion or contact for contacting the trigger 650 located below the trigger slider 640.

[0095] The trigger 650 is a sensing element such as a micro switch or a pressure sensor, and is installed on the arc-shaped pressure plate 620 at a suitable position below the trigger slider 640. The trigger 650 is electrically connected to the drive device of the arc-shaped plate through a controller. When the trigger 650 detects a trigger signal, it feeds back to the controller, and the controller sends a signal to stop the arc-shaped plate drive device, thereby stopping the arc-shaped pressure plate 620 from moving closer to the mold base 200.

[0096] Working principle: As the arc-shaped pressure plate 620 moves towards the mold base 200, the guide slope first contacts the connecting seat 610, thereby pushing the mold base 200. When the mold base 200 is subjected to the same pressure on all four sides, the mold base 200 stops moving, and the arc-shaped pressure plate 620 continues to move. The guide slope begins to apply downward pressure to the connecting seat 610. At the same time, the trigger slider 640 on the arc-shaped pressure plate 620 begins to contact the trigger top ring 630. The trigger top ring 630 pushes the trigger slider 640 downward through the reverse force generated by the proximity of the trigger slider 640, thereby triggering the trigger element 650. The controller controls the drive device of the arc-shaped pressure plate 620 to stop. On the one hand, this ensures that the guide slope presses the mold base 200 tightly through the connecting seat 610, while avoiding excessive pressure on the connecting seat 610, which would lead to increased wear of the guide slope. On the other hand, it allows the operator to observe and judge whether the arc-shaped pressure plate 620 needs to be replaced. For example, after the trigger 650 is triggered, it can be clearly seen that there is still a gap between the guide slope and the connecting seat 610. The operator can replace the arc-shaped pressure plate 620 or adjust the position of the trigger slider 640 in time, so that the trigger slider 640 can be triggered later.

[0097] Conversely, since there is also relative sliding between the trigger slider 640 and the trigger top ring 630, there is also corresponding wear between the contact surfaces of the trigger slider 640 and the trigger top ring 630.

[0098] refer to Figure 8 and Figure 9 Furthermore, the trigger top ring 630 is vertically mounted on the outer wall of the mold base 200, and the connecting assembly 600 also includes a limiting block 660, an elastic pushing component 670, and an elastic support component 680. The trigger top ring 630 is preferably made of ordinary metal or plastic, while the trigger sliding component 640 is made of wear-resistant metal. Simultaneously, a vertical guide groove is machined on the outer wall of the mold base 200, and the trigger top ring 630 is mounted on the mold base 200 via a slider that mates with the guide groove, thus achieving vertical movement.

[0099] The limiting blocks 660 are fixed to the outer wall of the mold base 200 by welding or bolting. Several limiting blocks 660 are evenly distributed, typically 3-6, depending on the size of the mold base 200 and the size of the trigger top ring 630. The limiting blocks 660 have a C-shaped structure, with one end fixed to the outer wall of the mold base 200 and located above the trigger top ring 630, and the other end extending below the trigger top ring 630, supporting the trigger top ring 630 from its edge to maintain it at a fixed height.

[0100] The elastic pusher 670 is a compression spring. One end of the spring is fitted onto a positioning post pre-set on the mounting platform on the outer wall of the mold base 200, and the other end abuts against the bottom of the trigger ring 630. This ensures sufficient force to allow the trigger ring 630 to slide downwards towards the lifting end of the lower limit block 660, compensating for wear between the edge of the trigger ring 630 and the trigger slider 640. When the edge of the trigger ring 630 wears due to friction with the trigger slider 640, the elastic pusher 670 releases its elasticity, allowing the trigger ring 630 to move downwards while maintaining its worn edge against the lifting end of the limit block 660.

[0101] The elastic support 680 also uses a compression spring. A mounting groove is formed on the arc-shaped pressure plate 620 corresponding to the position of the trigger slider 640. The mounting groove is located at the bottom of the trigger slider 640, and the compression spring is placed inside the mounting groove, with one end contacting the bottom of the trigger slider 640 and the other end contacting the bottom of the mounting groove. This ensures that the elastic support 680 can provide sufficient force to allow the trigger slider 640 to slide upwards when not pushed by the trigger top ring 630, maintaining good contact with the trigger top ring 630. Considering that the trigger slider 640 is made of wear-resistant metal and the trigger top ring 630 is made of a fragile material, the elastic support 680 only needs to ensure that the trigger slider 640 can return to its original position when it is away from the trigger top ring 630. This facilitates future use. Correspondingly, the force required for the deformation of the elastic support 680 should be less than the force required for the deformation of the elastic pusher 670, thereby preventing the trigger slider 640 from pushing the trigger top ring 630 upwards.

[0102] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An automotive wheel hub processing device, characterized in that, include: Frame (100) A mold base (200) is rotatably mounted on the frame (100). The mold base (200) is used to support the inner wall of the upper section of the hub. The mold base (200) has an inner groove (210). The first sliding seat (300) is slidably disposed on the frame (100) and located on one side of the mold base (200). The first sliding seat (300) can slide close to the mold base (200). A spinning wheel (310) is rotatably mounted on the first sliding seat (300). The outer periphery of the spinning wheel (310) has a convex ring (311) that is adapted to the inner groove (210). The spinning wheel (310) can approach the mold base (200) under the drive of the first sliding seat (300) to form the upper section of the refined wheel hub under the cooperation of the convex ring (311) and the inner groove (210). A connecting component (600) is provided between the mold base (200) and the frame (100), the connecting component (600) comprising: A connecting seat (610) is sleeved on the outer peripheral wall of the mold base (200); At least two arc-shaped pressure plates (620) are provided, and several of the arc-shaped pressure plates (620) are slidably disposed on the frame (100) and evenly distributed around the mold base (200). The bottom of the arc-shaped pressure plate (620) has a guide slope. The arc-shaped pressure plate (620) can slide close to the connecting seat (610) and press the connecting seat (610) against the frame (100) through the guide slope. The connection component (600) is also connected to a trigger component, the trigger component comprising: A trigger top ring (630) is sleeved on the outer wall of the mold base (200); A trigger slider (640) is raised and lowered on the arc-shaped pressure plate (620). The trigger slider (640) can move closer to the trigger top ring (630) under the drive of the arc-shaped pressure plate (620) and move downward under the pushing action of the trigger top ring (630). A trigger (650) is disposed on the arc-shaped pressure plate (620) and located below the trigger slider (640). The trigger (650) can be triggered by the downward pressure of the trigger slider (640) and send a trigger signal to the controller. The processing technology of the wheel hub includes the following steps: S100, cuts the board material to the preset size to obtain the board material; S200, the sheet metal is rolled into a closed ring using a rolling device and then welded to obtain a blank for the upper section of the wheel hub. S300, the upper section blank of the wheel hub is heated to a reddish-brown state to obtain a reddish-brown upper section blank of the wheel hub; S400, the red-red state wheel hub upper section blank is transferred to the forming device for forming processing to obtain a refined wheel hub upper section; S500, the refined upper section, middle section and lower section of the wheel hub are welded together to form a wheel hub.

2. The automobile wheel hub processing device according to claim 1, characterized in that, Also includes: The second sliding seat (410) is slidably disposed on the frame (100), and the first sliding seat (300) and the second sliding seat (410) are respectively located on both sides of the mold base (200); The top support wheel (420) is rotatably mounted on the second sliding seat (410). The top support wheel (420) can support the outer wall of the upper section of the hub on the mold base (200) under the drive of the second sliding seat (410). The supporting position of the top support wheel (420) on the upper section of the hub corresponds to the spinning position of the spinning wheel (310), so that the top support wheel (420) can shape the spinning position of the upper section of the hub.

3. The automobile wheel hub processing device according to claim 1, characterized in that, Also includes: A lifting frame (510) is mounted on the frame (100) and can be lowered to approach the mold base (200). The rotating pressure plate (520) is rotatably mounted on the lifting frame (510). The axis of the rotating pressure plate (520) coincides with the axis of the mold base (200). The rotating pressure plate (520) can be lowered by the lifting frame (510) and brought close to the mold base (200) and pressed against the top of the upper section of the hub on the mold base (200).

4. The automobile wheel hub processing device according to claim 1, characterized in that, The trigger top ring (630) is elliptical and disposed on the outer wall of the mold base (200), and the connecting assembly (600) further includes: There are several limiting blocks (660), all of which are disposed on the outer wall of the mold base (200). The limiting blocks (660) can support the trigger top ring (630). An elastic pusher (670) is disposed on the outside of the mold base (200). The two ends of the elastic pusher (670) act on the mounting platform on the outer wall of the mold base (200) and the trigger top ring (630) respectively. The elastic pusher (670) can provide the force for the trigger top ring (630) to slide against the limiting block (660). An elastic support (680) is disposed on the arc-shaped pressure plate (620). The two ends of the elastic support (680) act on the trigger slider (640) and the arc-shaped pressure plate (620) respectively. The elastic support (680) can provide the trigger slider (640) with an upward sliding force.

5. The automobile wheel hub processing device according to claim 1, characterized in that, Specifically, S400 includes: S410, the red-red state wheel hub upper section blank is transferred to the molding device for molding to obtain the initial product of the wheel hub upper section; S420, the initial product of the upper section of the wheel hub is processed by a rolling device to create grooves on the outer wall of the upper section of the wheel hub, so as to obtain the refined upper section of the wheel hub.

6. The automobile wheel hub processing device according to claim 5, characterized in that, Between S410 and S420, there is also: S415, the initial product of the upper section of the wheel hub is cooled to room temperature.

7. The automobile wheel hub processing device according to claim 6, characterized in that, S410 is used to mold and shape the size and roundness of the upper section of the wheel hub blank, and can form the rolled edge on the upper section of the wheel hub. S420 is used to process the groove on the upper section of the wheel hub for installing the tire wire ring.

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