Stamping die and stamping method for forging automobile hub
By combining the elastic telescopic rod and clamping assembly with the automatic rotation mechanism, the problems of deformation and hole position displacement during flange drilling are solved, achieving efficient and stable flange drilling and installation.
Patent Information
- Application Number
- CN202511511492.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-22
- Publication Date
- 2025-12-12
AI Technical Summary
Existing technologies are prone to deformation and hole position misalignment during flange drilling, affecting drilling quality and efficiency, and manual adjustment makes it difficult to ensure hole alignment.
The flange is automatically adjusted and positioned by using a flexible telescopic rod and clamping assembly in conjunction with an automatic rotating mechanism. Deformation is prevented by the contact between the clamping plate and the frustum, and drilling is performed by using an electric milling cutter in conjunction with the rotating assembly.
This improves the stability and efficiency of flange drilling, avoids hole position deviation and deformation, and ensures the installation stability and drilling quality of the flange and hub.
Smart Images
Figure CN121104162A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of wheel hub technology, specifically to a stamping die and stamping method for forging automobile wheel hubs. Background Technology
[0002] A wheel hub is a cylindrical metal component that supports the tire and is centrally mounted on an axle. It is also called a wheel rim, steel rim, wheel, or tire wheel. Wheel hubs come in many varieties depending on their diameter, width, molding method, and materials. In the past, passenger car wheel bearings were mostly paired single-row tapered roller or ball bearings. With technological advancements, passenger cars now widely use wheel hub units, and the application and usage of wheel hub bearing units have increased significantly, evolving to the third generation: The first generation consisted of double-row angular contact bearings; the second generation had a flange on the outer raceway for securing the bearing, allowing for easy mounting of the bearing onto the axle and securing it with a nut, simplifying car maintenance; the third generation wheel hub bearing units combine the bearing unit with an anti-lock braking system. The wheel hub unit is designed with an inner flange and an outer flange. The inner flange is bolted to the drive shaft, while the outer flange mounts the entire bearing together.
[0003] Currently, when drilling flanges using existing technology, pre-processing of the flange is generally required. Pre-drilled holes are set at the locations on the flange to facilitate the positioning of the milling cutter. However, since the diameter of the pre-drilled hole is smaller than the diameter of the milling cutter, the flange is subjected to strong pressure during the drilling process. At this time, the material at the bottom of the pre-drilled hole will bulge downward and deform, thus affecting the quality of the flange after drilling. In addition, since multiple connection holes are usually drilled on the flange, manual adjustment is required after each hole is drilled. However, manual angle adjustment cannot ensure that the pre-drilled hole is aligned with the milling cutter, which will cause the drilled hole to be misaligned. This not only affects the efficiency of flange drilling but also affects the stability of the flange after it is installed with the hub. Summary of the Invention
[0004] The purpose of this invention is to provide a stamping die and stamping method for forging automobile wheel hubs, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a stamping die for forging automobile wheel hubs, comprising a processing table and a support, wherein the support is fixedly connected to the upper surface of the processing table, a wheel hub flange is provided on the top of the processing table, an installation mechanism is provided in the middle of the processing table, and a processing mechanism is provided in the middle of the support; The installation mechanism includes an installation component, which includes a collection box that is connected through to the lower surface of the middle part of the processing table. Three installation platforms are fixedly connected in a circular array on the upper surface of the middle part of the processing table. An arc-shaped sliding groove is provided on the inner wall of the installation platform. A circular groove is provided through the middle of the installation platform. A rectangular groove is provided on the upper surface of the installation platform. The installation mechanism further includes a clamping assembly, which includes a slide rod fixedly connected to the inner wall of a rectangular groove. A spring is sleeved on the outer wall of the slide rod, and a slider is sleeved on the outer wall of the slide rod. A clamping plate is fixedly connected to the top of the slider, and a friction plate is fixedly connected to the side wall of the clamping plate. A frustum is slidably connected to the inner wall of the arc-shaped groove, and elastic telescopic rods are fixedly connected in a circular array on the inner wall of the frustum.
[0006] Preferably, the processing table has a slot in the middle, and the hub flange has pre-drilled holes arranged in a ring array inside.
[0007] Preferably, the hub flange is placed on the upper surface of the frustum.
[0008] Preferably, the dimensions of the elastic telescopic rod are adapted to the dimensions of the pre-drilled hole in the wheel hub flange.
[0009] Preferably, the two ends of the spring are fixedly connected to the rectangular groove and the slider, respectively.
[0010] Preferably, the processing mechanism includes a drilling assembly, which includes a fixing plate one fixedly connected to the top of the bracket, a drive motor fixedly mounted on the upper surface of the fixing plate one, an electric milling cutter fixedly mounted on the lower surface of the fixing plate one, a fixing plate two fixedly connected to the outer wall of the electric milling cutter, and an elastic telescopic rod two fixedly connected to the lower surface of the fixing plate two away from the electric milling cutter.
[0011] Preferably, the drive motor is electrically connected to an external control device, the electric milling cutter is electrically connected to the drive motor, and a cross-shaped locking block is fixedly connected to the lower surface of the second elastic telescopic rod.
[0012] Preferably, the processing mechanism further includes a rotating component, which includes a fixed frame fixedly connected to the inner wall of the frustum. A threaded rod is rotatably connected through the middle of the fixed frame. An annular groove is formed on the upper surface of the middle of the fixed frame. A disc is fixedly connected to the bottom end of the threaded rod. Elastic telescopic rods three are symmetrically slidably connected inside the annular groove. A sleeve is fixedly connected between the top ends of the two elastic telescopic rods three. A cross groove is formed on the upper surface of the sleeve. Two sliders two are symmetrically fixedly connected to the bottom of the inner cavity of the sleeve. Two springs are arranged in a ring array and fixedly connected to the upper surface of the disc.
[0013] Preferably, the size of the cross slot is adapted to the size of the cross block opened on the second elastic telescopic rod, and they are on the same vertical horizontal plane. The sleeve is fitted onto the top of the threaded rod, and the end of the double spring away from the disc is fixedly connected to the frustum.
[0014] A stamping method for forging automobile wheel hubs includes the following steps: Step 1: Flange positioning and fixing: Place the hub flange on top of the clamping plate, press down to align the pre-drilled hole of the flange with the elastic telescopic rod and fit it in place. The spring drives the clamping plate and friction plate to clamp the flange, completing the fixing. Step 2: Drilling assembly start-up calibration: Start the drive motor to drive the electric milling cutter to rotate, and move the milling cutter down so that the cross block of the elastic telescopic rod 2 engages with the cross slot set on the sleeve to complete the linkage calibration; Step 3: Punching and Enlarging Hole and Shavings Collection: The milling cutter moves down to punch and enlarge the pre-made hole, compressing the elastic telescopic rod to contract; the generated shavings fall into the collection box through the trough. Step 4: Automatic Flange Rotation and Positioning: After the milling cutter disengages from the flange, the elastic telescopic rod presses down on the sleeve, causing the threaded rod to rotate and stretch the double springs; the double springs rebound, driving the frustum and flange to rotate, so that the next set of pre-drilled holes aligns with the milling cutter. Step 5: Equipment reset and cycle processing: The milling cutter moves upward, and the sleeve resets under the action of the elastic telescopic rod; the milling cutter returns to its initial position, and the hole enlargement and rotation steps are repeated until all pre-drilled holes are processed. Then, the equipment is shut down and the flange is removed.
[0015] Beneficial effects Compared with the prior art, the present invention provides a stamping die and stamping method for forging automobile wheel hubs, which has the following beneficial effects: 1. By pressing down the sleeve with the elastic telescopic rod two, the sleeve drives the threaded rod and the disc to rotate synchronously. This causes the double springs to drive the frustum and the elastic telescopic rod one to abut against each other, making the elastic telescopic rod one rotate against the wheel hub flange. This achieves automatic adjustment of the wheel hub flange, avoiding positional deviations caused by manual adjustment of the wheel hub flange angle and deviations in the position of the preset holes in the wheel hub flange. This not only improves the stability of the wheel hub flange after installation with the wheel hub, but also improves the drilling efficiency of the wheel hub flange.
[0016] 2. The clamping plate is used for clamping and limiting, and the truncated cone abuts against the bottom of the pre-drilled hole of the wheel hub flange, which prevents the pre-drilled hole of the wheel hub flange from deforming downward when subjected to excessive pressure. This not only prevents the wheel hub flange from being difficult to install with the wheel hub after deformation, but also ensures the quality of the wheel hub flange after drilling. Attached Figure Description
[0017] Figure 1This is a schematic diagram of the overall structure of a stamping die for forging automobile wheel hubs proposed in this invention; Figure 2 This is a schematic diagram of the processing table and support structure in a stamping die for forging automobile wheel hubs proposed in this invention; Figure 3 This is a schematic diagram of the drilling assembly structure in a stamping die for forging automobile wheel hubs, as proposed in this invention. Figure 4 This is a schematic diagram of the mounting platform and sleeve structure in a stamping die for forging automobile wheel hubs proposed in this invention; Figure 5 This is a partial structural diagram of an mounting component in a stamping die for forging automobile wheel hubs, as proposed in this invention. Figure 6 This is a partial structural diagram of a clamping component in a stamping die for forging automobile wheel hubs, as proposed in this invention. Figure 7 This is a schematic diagram of the fixing frame and sleeve structure in a stamping die and stamping method for forging automobile wheel hubs proposed in this invention; Figure 8 This is a partial structural diagram of a rotating component in a stamping die for forging automobile wheel hubs, as proposed in this invention. Figure 9 This is a schematic diagram of the threaded rod and cross groove structure in a stamping die for forging automobile wheel hubs proposed in this invention; Figure 10 This is a schematic diagram of the sleeve and slider structure in a stamping die for forging automobile wheel hubs proposed in this invention; Figure 11 This is a schematic diagram of a stamping method for forging automobile wheel hubs proposed in this invention.
[0018] In the diagram: 100, machining table; 200, bracket; 300, hub flange; 400, mounting mechanism; 411, collection box; 412, mounting platform; 413, arc-shaped slide; 414, circular groove; 415, rectangular groove; 421, slide rod; 422, spring one; 423, clamping plate; 424, friction plate; 425, slider one; 426, frustum; 427, elastic telescopic rod one; 500, machining mechanism; 511, fixing plate one; 512, drive motor; 513, electric milling cutter; 514, fixing plate two; 515, elastic telescopic rod two; 521, fixing frame; 522, threaded rod; 523, annular slide; 524, disc; 525, elastic telescopic rod three; 526, sleeve; 527, cross groove; 528, slider two; 529, double spring. Detailed Implementation
[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0020] Example: See attached document Figures 1 to 11 As shown, a stamping die for forging automobile wheel hubs includes a processing table 100 and a support 200. The support 200 is fixedly connected to the upper surface of the processing table 100. A slot is provided in the middle of the processing table 100. A wheel hub flange 300 is provided on the top of the processing table 100. The wheel hub flange 300 has pre-drilled holes arranged in a ring array inside. An installation mechanism 400 is provided in the middle of the processing table 100, and a processing mechanism 500 is provided in the middle of the support 200.
[0021] The mounting mechanism 400 includes a mounting component, which includes a collection box 411 that is connected through to the lower surface of the middle part of the processing table 100. Three mounting tables 412 are fixedly connected in a ring array on the upper surface of the middle part of the processing table 100. An arc-shaped groove 413 is provided on the inner wall of the mounting table 412. A circular groove 414 is provided through the middle of the mounting table 412. A rectangular groove 415 is provided on the upper surface of the mounting table 412.
[0022] The mounting mechanism 400 also includes a clamping assembly, which includes a slide rod 421 fixedly connected to the inner wall of the rectangular groove 415. A spring 422 is sleeved on the outer wall of the slide rod 421, and a slider 425 is sleeved on the outer wall of the slide rod 421. The two ends of the spring 422 are fixedly connected to the rectangular groove 415 and the slider 425 respectively. A clamping plate 423 is fixedly connected to the top of the slider 425. A friction plate 424 is fixedly connected to the side wall of the clamping plate 423. A frustum 426 is slidably connected to the inner wall of the arc-shaped groove 413. The hub flange 300 is placed on the upper surface of the frustum 426. Elastic telescopic rods 427 are fixedly connected in a ring array on the inner wall of the frustum 426. The size of the elastic telescopic rods 427 is adapted to the size of the pre-drilled hole in the hub flange 300.
[0023] The clamping assembly prevents the hub flange 300 from shifting position during drilling. The mounting assembly abuts the bottom of the preset hole of the hub flange 300, preventing deformation of the preset hole during machining and ensuring the machining quality of the hub flange 300.
[0024] Furthermore, the machining mechanism 500 includes a drilling assembly, which includes a fixing plate 511 fixedly connected to the top of the bracket 200. A drive motor 512 is fixedly mounted on the upper surface of the fixing plate 511. The drive motor 512 has an electrical connection with an external control device. An electric milling cutter 513 is fixedly mounted on the lower surface of the fixing plate 511. The electric milling cutter 513 has an electrical connection with the drive motor 512. A fixing plate 514 is fixedly connected to the outer wall of the electric milling cutter 513. An elastic telescopic rod 515 is fixedly connected to the lower surface of the fixing plate 514 away from the electric milling cutter 513. A cross-shaped locking block is fixedly connected to the lower surface of the elastic telescopic rod 515.
[0025] Furthermore, the processing mechanism 500 also includes a rotating assembly, which includes a fixed frame 521 fixedly connected to the inner wall of the frustum 426. A threaded rod 522 is rotatably connected through the middle of the fixed frame 521. An annular groove 523 is formed on the upper surface of the middle part of the fixed frame 521. A disc 524 is fixedly connected to the bottom end of the threaded rod 522. Elastic telescopic rods 525 are symmetrically slidably connected inside the annular groove 523. A sleeve 526 is fixedly connected between the top ends of the two elastic telescopic rods 525. The sleeve 526 is fitted onto the top of the threaded rod 522. A cross groove 527 is provided on the upper surface of the sleeve 526. The size of the cross groove 527 is compatible with the size of the cross block provided on the elastic telescopic rod 515 and is located on the same vertical horizontal plane. A slider 528 is symmetrically and fixedly connected to the bottom of the inner cavity of the sleeve 526. Two springs 529 are arranged and fixedly connected in a ring array on the upper surface of the disc 524. The end of the two springs 529 away from the disc 524 is fixedly connected to the frustum 426.
[0026] The rotating component is driven by the drilling component, which causes the hub flange 300 to rotate intermittently and automatically, thus avoiding manual rotation of the hub flange 300 and improving the drilling efficiency of the hub flange 300.
[0027] It should be noted that when the electric milling cutter 513 is disengaged from the hub flange 300, the cross-shaped locking block fixedly connected to the bottom of the elastic telescopic rod 515 is still inside the cross-shaped locking groove 527.
[0028] A stamping method for forging automobile wheel hubs includes the following steps: Step 1: Flange positioning and fixing: Place the hub flange 300 on the top of the clamping plate 423, press down to align the flange pre-drilled hole with the elastic telescopic rod 427 and fit it in place, the spring 422 drives the clamping plate 423 and friction plate 424 to clamp the flange, and the fixing is completed; Step 2: Drilling assembly start-up calibration: Start the drive motor 512 to drive the electric milling cutter 513 to rotate, and move the milling cutter down so that the cross block of the elastic telescopic rod 515 engages with the cross slot 527 set on the sleeve 526, and complete the linkage calibration; Step 3: Punching and expanding the hole and collecting iron filings: The milling cutter moves down to punch and expand the pre-made hole, and the elastic telescopic rod 427 is compressed and contracted; the generated iron filings fall into the collection box 411 through the trough; Step 4: Automatic Flange Rotation and Positioning: After the milling cutter disengages from the flange, the elastic telescopic rod 515 presses down on the sleeve 526, driving the threaded rod 522 to rotate and stretch the double spring 529; the double spring 529 rebounds, driving the frustum 426 and the flange to rotate, so that the next set of pre-drilled holes are aligned with the milling cutter. Step 5: Equipment reset and cycle processing: The milling cutter moves upward, and the sleeve 526 resets under the action of the elastic telescopic rod 525; the milling cutter returns to its initial position, and the hole enlargement and rotation steps are repeated until all pre-made holes are processed. Then, the equipment is shut down and the flange is removed.
[0029] The following describes the working process and principle of the above embodiments: The initial states are as follows: elastic telescopic rod 2 515 is in an unretracted state, spring 1 422 is in an uncompressed state, elastic telescopic rod 1 427 is in an unretracted state, slider 2 528 is at the top of threaded rod 522, elastic telescopic rod 3 525 is in an unretracted state, and double spring 529 is in an unstretched state.
[0030] The work steps are as follows: The operator places the hub flange 300 on top of the clamping plate 423 and presses it downwards by rotating it, aligning the pre-drilled hole in the hub flange 300 with the elastic telescopic rod 427. The operator then continues to press the hub flange 300 downwards, causing the tip of the elastic telescopic rod 427 to enter the pre-drilled hole in the hub flange 300. Simultaneously, as the hub flange 300 moves downwards, it contacts the inner wall of the top of the clamping plate 423, causing the clamping plate 423 to move away from the sleeve 526 on the upper surface of the mounting platform 412. This causes the clamping plate 423 to move synchronously with the friction plate 424 and the slider 425, causing the slider 425 to move against the outer wall of the sliding rod 421. The slide bar 421 moves away from the fixed frame 521, causing the spring 422 to contract as the slide bar moves away from the fixed frame 521. This continues until the lower surface of the hub flange 300 moves to the upper surface of the frustum 426. At this point, the hub flange 300 stops moving, and the clamping plate 423, under the elastic action of the spring 422, drives the friction plate 424 to clamp the hub flange 300. The clamping plate 423 provides clamping and limiting, and the frustum 426 abuts against the bottom of the preset hole of the hub flange 300, preventing the preset hole of the hub flange 300 from deforming downwards under excessive pressure. This not only prevents the hub flange 300 from being difficult to install with the hub after deformation, but also ensures the quality of the hub flange 300 after drilling.
[0031] The operator then powers on the drive motor 512 and the external control device, causing the drive motor 512 to control the electric milling cutter 513 to start working. The electric milling cutter 513 begins to move towards the preset hole in the wheel hub flange 300, causing the electric milling cutter 513 to move the second fixed plate 514 synchronously. The second fixed plate 514 then moves the second elastic telescopic rod 515 towards the side closer to the sleeve 526, causing the cross-shaped locking block fixedly connected to the bottom of the elastic telescopic rod 515 to enter the cross-shaped locking groove 527. At this time, the electric milling cutter 513 continues to move downwards, causing the second elastic telescopic rod 515 to abut against the sleeve 526, causing the elastic telescopic rod 515 to retract. When the electric milling cutter 513 reaches the wheel hub flange 300... When the pre-drilled hole is opened to the top, the electric milling cutter 513 drills the pre-drilled hole. During the drilling process, the electric milling cutter 513 continuously moves into the interior of the pre-drilled hole. At this time, the iron chips drilled by the electric milling cutter 513 enter the collection box 411 through the position of the frustum 426 for collection. Then, the electric milling cutter 513 retracts by contacting the top of the elastic telescopic rod 427. The pre-drilled hole is completed after the elastic telescopic rod 427 is fully retracted. During the retraction of the electric milling cutter 513 against the elastic telescopic rod 427, the elastic telescopic rod 515 moves vertically downward on the outer wall of the threaded rod 522 by contacting the sleeve 526. The sleeve 526 then contacts the threaded rod 522 through the cross groove 527 in the fixed frame. The internal rotation of 521 causes the threaded rod 522 to drive the disc 524 to rotate synchronously. Simultaneously, as the sleeve 526 moves downwards, it compresses the elastic telescopic rod 525, causing it to contract. At the same time, the disc 524 pulls the bottom of the double spring 529, causing it to rotate and stretch. At this point, because the elastic telescopic rod 515 is in contact with the drilled hole, and as it moves upwards, the compressed elastic telescopic rod 427 extends upwards and contacts the hole drilled in the hub flange 300, the frustum 426 cannot rotate, thus stretching the double spring 529. When the electric milling cutter 513 moves to disengage from the hole drilled in the hub flange 300, the elastic telescopic rod... The first elastic telescopic rod 427 extends again into the interior of the hub flange 300. Simultaneously, the stretched double spring 529 drives the frustum 426 to rotate within the arc-shaped groove 413 of the mounting platform 412. This causes the frustum 426 to drive the first elastic telescopic rod 427 to rotate synchronously, causing the first elastic telescopic rod 427 to abut against the hub flange 300 and rotate synchronously. After the hub flange 300 finishes rotating, the electric milling cutter 513 just causes the second elastic telescopic rod 515 to disengage from the sleeve 526. At this point, the sleeve 526 extends under the elastic action of the third elastic telescopic rod 525 after its contraction, causing the third elastic telescopic rod 525 to drive the sleeve 526 to move vertically upwards on the outer wall of the threaded rod 522, causing the second slider 528 to slide on the outer wall of the threaded rod 522.This causes the second slider 528 to drive the cross slot 527 to rotate synchronously, which in turn causes the bottom end of the third elastic telescopic rod 525 to rotate synchronously inside the annular groove 523. When the sleeve 526 moves to the top of the threaded rod 522, the electric milling cutter 513 moves to its initial position, at which point the first stage of work is completed. The second elastic telescopic rod 515 then presses down on the sleeve 526, causing the sleeve 526 to drive the threaded rod 522 and the disc 524 to rotate synchronously. This causes the double spring 529 to drive the frustum 426 and the first elastic telescopic rod 427 to abut against each other, causing the first elastic telescopic rod 427 to rotate against the hub flange 300. This achieves automatic adjustment of the hub flange 300, avoiding positional deviations caused by manual adjustment of the hub flange 300 angle and preventing deviations in the pre-drilled hole positions. This not only improves the stability of the hub flange 300 after installation with the hub but also increases the drilling efficiency of the hub flange 300.
[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A stamping die for forging automobile wheel hubs, comprising a processing table (100) and a support (200), wherein the support (200) is fixedly connected to the upper surface of the processing table (100), characterized in that: The top of the processing table (100) is provided with a hub flange (300), the middle of the processing table (100) is provided with an installation mechanism (400), and the middle of the support (200) is provided with a processing mechanism (500). The installation mechanism (400) includes an installation component, which includes a collection box (411) that is connected through to the lower surface of the middle part of the processing table (100). Three mounting tables (412) are fixedly connected in a ring array on the upper surface of the middle part of the processing table (100). An arc-shaped groove (413) is provided on the inner wall of the mounting table (412). A circular groove (414) is provided through the middle of the mounting table (412). A rectangular groove (415) is provided on the upper surface of the mounting table (412). The installation mechanism (400) further includes a clamping assembly, which includes a slide rod (421) fixedly connected to the inner wall of the rectangular groove (415), a spring (422) sleeved on the outer wall of the slide rod (421), a slider (425) sleeved on the outer wall of the slide rod (421), a clamping plate (423) fixedly connected to the top of the slider (425), a friction plate (424) fixedly connected to the side wall of the clamping plate (423), a frustum (426) slidably connected to the inner wall of the arc-shaped groove (413), and elastic telescopic rods (427) fixedly connected in a ring array on the inner wall of the frustum (426).
2. The stamping die for forging automobile wheel hubs according to claim 1, characterized in that: The processing table (100) has a slot in the middle, and the hub flange (300) has pre-made holes arranged in a ring array inside.
3. A stamping die for forging automobile wheel hubs according to claim 2, characterized in that: The hub flange (300) is placed on the upper surface of the frustum (426).
4. A stamping die for forging automobile wheel hubs according to claim 3, characterized in that: The dimensions of the elastic telescopic rod (427) are adapted to the dimensions of the pre-drilled hole in the hub flange (300).
5. A stamping die for forging automobile wheel hubs according to claim 3, characterized in that: The two ends of the spring (422) are fixedly connected to the rectangular groove (415) and the slider (425) respectively.
6. A stamping die for forging automobile wheel hubs according to claim 1, characterized in that: The processing mechanism (500) includes a drilling assembly, which includes a fixing plate (511) fixedly connected to the top of the bracket (200). A drive motor (512) is fixedly installed on the upper surface of the fixing plate (511), and an electric milling cutter (513) is fixedly installed on the lower surface of the fixing plate (511). A fixing plate (514) is fixedly connected to the outer wall of the electric milling cutter (513), and an elastic telescopic rod (515) is fixedly connected to the lower surface of the fixing plate (514) at the end away from the electric milling cutter (513).
7. A stamping die for forging automobile wheel hubs according to claim 6, characterized in that: The drive motor (512) is electrically connected to an external control device, the electric milling cutter (513) is electrically connected to the drive motor (512), and a cross-shaped locking block is fixedly connected to the lower surface of the elastic telescopic rod (515).
8. A stamping die for forging automobile wheel hubs according to claim 6, characterized in that: The processing mechanism (500) further includes a rotating component, which includes a fixed frame (521) fixedly connected to the inner wall of the frustum (426). A threaded rod (522) is rotatably connected through the middle of the fixed frame (521). An annular groove (523) is provided on the upper surface of the middle of the fixed frame (521). A disc (524) is fixedly connected to the bottom end of the threaded rod (522). Three elastic telescopic rods (525) are symmetrically slidably connected inside the annular groove (523). A sleeve (526) is fixedly connected between the top ends of the two elastic telescopic rods (525). A cross groove (527) is provided on the upper surface of the sleeve (526). Two sliders (528) are symmetrically fixedly connected to the bottom of the inner cavity of the sleeve (526). Two springs (529) are arranged in an annular array on the upper surface of the disc (524).
9. A stamping die for forging automobile wheel hubs according to claim 8, characterized in that: The dimensions of the cross slot (527) are compatible with the dimensions of the cross block opened on the second elastic telescopic rod (515) and are on the same vertical horizontal plane. The sleeve (526) is sleeved on the top of the threaded rod (522). The end of the double spring (529) away from the disc (524) is fixedly connected to the frustum (426).
10. A stamping method for forging automobile wheel hubs using a stamping die according to any one of claims 1-9, characterized in that: Includes the following steps: Step 1: Flange positioning and fixing: Place the hub flange (300) on the top of the clamping plate (423), press down to align the flange pre-drilled hole with the elastic telescopic rod (427) and fit it in place. The spring (422) drives the clamping plate (423) and friction plate (424) to clamp the flange and complete the fixing. Step 2: Drilling assembly start-up calibration: Start the drive motor (512) to drive the electric milling cutter (513) to run, and move the milling cutter down so that the cross block of the elastic telescopic rod 2 (515) engages with the cross slot (527) set on the sleeve (526) to complete the linkage calibration; Step 3: Punching and expanding the hole and collecting iron filings: The milling cutter moves down to punch and expand the pre-made hole, and the elastic telescopic rod (427) is squeezed to shrink; the generated iron filings fall into the collection box (411) through the trough. Step 4: Automatic rotation and positioning of flange: After the milling cutter is disengaged from the flange, the elastic telescopic rod 2 (515) presses down the sleeve (526) to drive the threaded rod (522) to rotate and stretch the double spring (529); the double spring (529) rebounds to drive the frustum (426) and flange to rotate, so that the next set of pre-made holes are aligned with the milling cutter; Step 5: Equipment reset and cycle processing: The milling cutter moves up, and the sleeve (526) is reset under the action of the elastic telescopic rod three (525); the milling cutter returns to the initial position, and the hole enlargement and rotation steps are repeated until all pre-made holes are processed, and the equipment is closed and the flange is removed.