A spinning tooling and a wheel hub spinning process

Abstract

This invention belongs to the field of spinning technology and discloses a spinning fixture and a wheel hub spinning forming process. The spinning fixture includes a support, a tailstock, a roller assembly, and a ejector plate. The support is mounted on a first driving member and is used to hold the blank. A through hole is formed in the center of the support along its axial direction. The first driving member controls the rotation of the support. The tailstock is mounted on a second driving member, which controls the raising and lowering of the tailstock relative to the support and controls the rotation of the tailstock. The roller assembly includes a first roller and a second roller. The ejector plate is adapted to rise relative to the support after the blank is spun and formed, so as to lift the spun and formed blank and detach it from the support. The wheel hub spinning forming process uses the above-mentioned spinning fixture. The spinning fixture and wheel hub spinning forming process provided by this invention effectively improve the complex multi-pass spinning process steps in the prior art, effectively improve production efficiency, and reduce manufacturing costs.

Description

Technical Field

[0001] This invention relates to the field of spinning technology, and in particular to a spinning fixture and a wheel hub spinning forming process. Background Technology

[0002] Hybrid electric vehicles are equipped with a rotor hub in their electric motors. Due to the complex structure of the rotor hub, two common manufacturing processes are employed in current technology: one is to pre-machine the individual components of the rotor hub and then assemble them into a complete rotor hub through welding and other processes. This manufacturing process involves numerous steps, including welding and assembly, resulting in low production efficiency. The other process uses a hub blank and spins it on a spinning machine to ultimately produce the rotor hub. This process reduces the number of steps to some extent, but currently, it is generally manufactured using a multi-pass spinning method. This means that the hub blank needs to be loaded and unloaded from the spinning machine multiple times to adjust the spinning position, which still involves many steps and increases the consumption of manpower and resources. Summary of the Invention

[0003] The purpose of this invention is to provide a spinning fixture and a hub spinning process, which can further simplify the process steps in the rotor hub spinning process.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A spinning fixture is disposed on a spinning machine tool, the spinning machine tool including a frame and a first drive member and a second drive member disposed on the frame, the second drive member being located above the first drive member, the spinning fixture comprising:

[0006] A support is provided on the first driving member and is used to place a blank part. The diameter of the blank part is larger than the diameter of the support. A through hole is opened at the center of the support along its own axial direction. The first driving member can control the support to rotate along its own axial direction.

[0007] The tail top is disposed on the second driving member and coaxially arranged with the through hole. The second driving member can control the tail top to rise and fall on the support and control the tail top to rotate along its own axial direction.

[0008] The roller assembly includes a first roller and a second roller that are rotatably disposed on the frame. The side end face of the first roller in the radial direction is configured as a stepped spinning surface, and the side end face of the second roller in the radial direction is configured as a circular arc spinning surface.

[0009] The ejector plate is vertically mounted on the frame and is adapted to rise relative to the support after the blank is spun and formed, so as to lift the spun blank and detach it from the support.

[0010] Optionally, a support base is fixedly inserted into the through hole, and a support block is retractably provided above the support base in the through hole. The support block is positioned directly opposite the tail top, and an elastic element is provided between the support base and the support block.

[0011] Optionally, the side wall of the support block protrudes and is provided with a limiting groove, and the wall of the through hole is provided with a corresponding limiting head. The limiting groove extends along the axial direction of the through hole, and the limiting head is slidably disposed in the limiting groove.

[0012] Optionally, the first rollers are arranged in pairs on opposite sides of the support along a first direction, and each first roller is rotatably disposed on a corresponding first roller seat. The first roller seat is movably disposed on the frame by a third driving member.

[0013] The second rollers are arranged in pairs on opposite sides of the support along the second direction. Each second roller is rotatably mounted on a corresponding second roller seat. The second roller seat is movably mounted on the frame via a fourth driving member.

[0014] Optionally, the third driving component includes a first servo module and a second servo module. The first servo module includes a first slide rail and a first sliding part. The second servo module includes a second slide rail and a second sliding part. The first slide rail extends horizontally and is disposed on the frame. The first sliding part is slidably connected to the first slide rail. The second slide rail extends vertically and is disposed on the first sliding part. The second sliding part is slidably connected to the second slide rail. The first roller seat is fixedly disposed on the second sliding part.

[0015] The fourth driving component includes a third servo module and a fourth servo module. The third servo module includes a third slide rail and a third sliding part. The fourth servo module includes a fourth slide rail and a fourth sliding part. The third slide rail extends horizontally and is disposed on the frame. The third sliding part is slidably connected to the third slide rail. The fourth slide rail extends vertically and is disposed on the third sliding part. The fourth sliding part is slidably connected to the fourth slide rail. The second roller seat is fixedly disposed on the fourth sliding part.

[0016] Optionally, a hydraulic cylinder is provided on the frame, and the unloading disc is fixedly installed on the drive end of the hydraulic cylinder. The hydraulic cylinder can control the unloading disc to rise and fall on the support.

[0017] Optionally, the first driving component is configured as a first motor, the fixed end of the first motor is fixedly mounted on the frame, and the support is sleeved on the output shaft of the first motor through the through hole.

[0018] Optionally, the second driving component includes a second motor, the fixed end of the second motor is movably mounted on the frame, the output shaft of the second motor is coaxially mounted with the output shaft of the first motor, and the tail is fixedly mounted on the output shaft of the second motor.

[0019] Optionally, the second drive unit further includes a second lifting drive device, which can control the fixed end of the second motor to rise and fall on the frame.

[0020] A wheel hub spinning forming process, using any of the spinning fixtures described above, mainly includes the following steps:

[0021] S100: Place the wheel hub blank on the support, and control the support and the tail top to rotate at the same speed;

[0022] S200, The stepped spinning surfaces of the tail top and the first roller are pressed together against the hub blank;

[0023] S300, the tail fin continues to move downward to press the center of the wheel hub blank into shape;

[0024] S400, the first roller continues to move downward and spins the hub blank inward toward the tail tip, so that the stepped spinning surface can spin the shaft end of the hub blank into shape.

[0025] S500: The arc-shaped pressing surface of the second roller is pressed downward onto the hub blank, so that the suspended end of the hub blank is turned inward and abuts against the side wall of the support, thus forming a hub molded part.

[0026] S600, the tail top moves upward and disengages from the wheel hub forming part;

[0027] S700, the ejector plate rises to lift the wheel hub molding part and detach it from the support.

[0028] Beneficial effects:

[0029] When using the spinning fixture provided by this invention to spin-form a wheel hub, the wheel hub blank is first placed on the support. The first and second driving components drive the support and the tail roller to rotate at the same speed. Then, the stepped spinning surfaces of the tail roller and the first roller are pressed together against the wheel hub blank. The tail roller and the support rotate at the same speed, preventing friction with the wheel hub blank. After contacting the wheel hub blank, the first roller rolls under the influence of the blank. The tail roller and the first roller work together to reliably press the wheel hub blank onto the support. Next, the tail roller continues to move downwards, pressing down on the center of the wheel hub blank to initially form the shaft hole structure. Then, the first roller continues to move downwards, pressing the wheel hub blank... After the upper surface of the blank is pressed down to a certain height, it continues to move inward towards the tail tip, allowing the stepped spinning surface to spin-form the shaft end portion of the upper surface of the hub blank. Then, the second roller is pressed against the hub blank, rolling under the influence of the blank. The second roller is then controlled to continue moving downwards, allowing its arc-shaped spinning surface to spin-form the hub blank, causing the suspended end of the hub blank on the support to fold inwards and abut against the side wall of the support, ultimately forming the hub component. Next, the tail tip moves upwards, contacting the hub component, and then the ejector plate is controlled to rise, lifting the hub component upwards and detaching it from the support, thus completing the spinning forming of the rotor hub. The above process is simple, using only a single-pass spinning method to manufacture the hub component, effectively improving the complex multi-pass spinning process of existing technologies, significantly increasing production efficiency, and reducing manufacturing costs. Attached Figure Description

[0030] Figure 1 This is an exploded schematic diagram of the spinning tooling part of the present invention;

[0031] Figure 2 This is a schematic diagram of the support portion of the present invention;

[0032] Figure 3 This is a schematic diagram showing the distribution of the roller assembly of the present invention;

[0033] Figure 4 This is a schematic diagram of the connection between the support and the first driving member of the present invention;

[0034] Figure 5 This is a schematic diagram of the connection between the tail section and the second driving component of the present invention;

[0035] Figure 6 This is a schematic diagram of the connection between the first roller seat and the third driving component of the present invention;

[0036] Figure 7 This is a schematic diagram of the connection between the second roller seat and the fourth driving component of the present invention;

[0037] Figure 8This is a schematic diagram of the wheel hub spinning process of the present invention;

[0038] Figure 9 This is the corresponding invention Figure 8 A schematic diagram of the structure of step S100;

[0039] Figure 10 This is the corresponding invention Figure 8 A schematic diagram of the structure of step S200;

[0040] Figure 11 This is the corresponding invention Figure 8 Schematic diagram of steps S300 to S400 in the middle section;

[0041] Figure 12 This is the corresponding invention Figure 8 A schematic diagram of the structure of step S500;

[0042] Figure 13 This is the corresponding invention Figure 8 Schematic diagram of steps S600 to S700.

[0043] In the picture:

[0044] 100, Support; 101, Through hole; 102, Limiting head; 110, Support base; 120, Support block; 121, Limiting groove; 130, Elastic element;

[0045] 200, tail top;

[0046] 310. First roller; 311. Stepped spun surface; 320. Second roller; 321. Circular arc spun surface; 330. First roller seat; 340. Second roller seat;

[0047] 400. Unloading tray; 410. Unloading tray support;

[0048] 510, First servo module; 511, First slide rail; 512, First sliding part; 520, Second servo module; 521, Second slide rail; 522, Second sliding part; 530, Third servo module; 531, Third slide rail; 532, Third sliding part; 540, Fourth servo module; 541, Fourth slide rail; 542, Fourth sliding part; 550, Fifth servo module; 551, Fifth slide rail; 552, Fifth sliding part;

[0049] 610. First motor; 620. Second motor;

[0050] 700. Wheel hub blank;

[0051] 800. Wheel hub molding parts. Detailed Implementation

[0052] 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. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0053] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction 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.

[0054] 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.

[0055] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not 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. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0056] This embodiment provides a spinning fixture, which is mounted on a spinning machine and used for spinning a blank workpiece. The spinning machine includes a frame (not shown) and a first drive member and a second drive member mounted on the frame. (Refer to...) Figures 1 to 3As shown, the spinning fixture includes a support 100, a tail tip 200, a roller assembly, and an ejector plate 400. The support 100 is mounted on a first driving member and is used to hold a blank (not shown). The diameter of the blank is larger than the diameter of the support 100. A through hole 101 is formed at the center of the support 100 along its own axial direction. The first driving member can control the support 100 to rotate along its own axial direction. The tail tip 200 is mounted on a second driving member and is coaxially arranged with the through hole 101. The second driving member can control the tail tip 200 to rise and fall on the support 100. The tail fin 200 is controlled to rotate along its own axial direction. The roller assembly includes a first roller 310 and a second roller 320 that can be rolled on the frame. The side end face of the first roller 310 in the radial direction is set as a stepped spinning surface 311, and the side end face of the second roller 320 in the radial direction is set as an arc spinning surface 321. The ejector plate 400 is vertically and vertically mounted on the frame. The ejector plate 400 is adapted to rise relative to the support 100 after the blank is spun and formed, so as to lift the spun blank and detach it from the support 100.

[0057] Corresponding to this spinning tooling, this embodiment also provides a wheel hub spinning forming process. The beneficial effects of the spinning tooling are described in detail below in conjunction with the process steps.

[0058] Reference Figure 8 As shown, the wheel hub spinning process mainly includes the following steps:

[0059] S100: Place the wheel hub blank 700 on the support 100 and control the support 100 and the tail 200 to rotate at the same speed.

[0060] S200, the tail top 200 and the stepped spinning surface 311 of the first roller 310 are pressed together against the hub blank 700;

[0061] S300 and rear top 200 continue to move downwards to press the center of the wheel hub blank 700 into shape;

[0062] S400, the first roller 310 continues to move downward and spins the hub blank 700 inward toward the tail 200 so that the stepped spinning surface 311 can spin the shaft end of the hub blank 700 into shape.

[0063] S500, the arc-shaped spinning surface 321 of the second roller 320 is spun downwards onto the hub blank 700, so that the suspended end of the hub blank 700 is turned inwards and abuts against the side wall of the support 100, and finally the hub forming part 800 is formed.

[0064] S600, the rear top 200 moves upward and separates from the wheel hub forming part 800;

[0065] S700, the ejector plate 400 rises to lift the wheel hub forming part 800 and detach it from the support 100.

[0066] Specifically, before step S100, the support 100 needs to be installed on the first drive member, and the tail fin 200 needs to be installed on the second drive member. Preferably, refer to Figures 4 to 5 As shown, in this embodiment, the first driving component is a first motor 610, the fixed end of which is fixedly mounted on the frame, and the support 100 is sleeved on the output shaft of the first motor 610 through the through hole 101. The second driving component includes a second motor 620, the fixed end of which is liftably mounted on the frame, the output shaft of the second motor 620 is coaxially mounted with the output shaft of the first motor 610, and the tail fin 200 is fixedly mounted on the output shaft of the second motor 620.

[0067] In this embodiment, both the first motor 610 and the second motor 620 are configured as servo motors.

[0068] It is worth mentioning that the arrangement of the first motor 610 and the second motor 620 is a preferred embodiment. In some other embodiments, the rotation of the support 100 and the tail 200 can also be controlled by other driving components, which will not be limited here.

[0069] Furthermore, the second driving component also includes a second lifting drive device, which can control the fixed end of the second motor 620 to rise and fall on the frame. Preferably, referring to... Figure 5 As shown, the second lifting drive device includes a fifth servo module 550, which includes a fifth slide rail 551 and a fifth sliding part 552. The fifth slide rail 551 is fixedly extended vertically on the frame, and the fifth sliding part 552 is slidably connected to the fifth slide rail 551. The fixed end of the second motor 620 is disposed on the fifth sliding part 552.

[0070] In this embodiment, the fifth servo module 550 is configured as a linear servo module.

[0071] It is worth mentioning that the configuration of the fifth servo module 550 is a preferred embodiment. In other embodiments, the lifting and lowering of the fixed end of the second motor 620 can also be controlled by other driving components such as drive cylinders and electric push rods, which will not be limited here.

[0072] In step S100, refer to Figure 9 As shown, a wheel hub blank 700 is placed on a support 100, and the axial cross-section of the wheel hub blank 700 is circular. In this embodiment, the axial cross-section of the support 100 is also circular. The diameter of the wheel hub blank 700 is larger than the diameter of the support 100, so that after the wheel hub blank 700 is placed on the support 100, the outer edge of the wheel hub blank 700 is suspended relative to the support 100, so as to perform subsequent spinning forming operations.

[0073] Specifically, the wheel hub blank 700 is placed coaxially on the support 100, and then the first motor 610 is controlled to work, so that the output shaft of the first motor 610 drives the support 100 to rotate; the second motor 620 is controlled to work, so that the output shaft of the second motor 620 drives the tail top 200 to rotate, and the speed and direction of the support 100 and the tail top 200 are the same.

[0074] After the above work is completed, proceed to step S200. In step S200, the position of the first roller 310 is adjusted. Specifically, refer to... Figure 1 , Figure 3 , Figure 6 As shown, first rollers 310 are arranged in pairs on opposite sides of the support 100 along a first direction, and each first roller 310 is rotatably mounted on a corresponding first roller seat 330. In this embodiment, the first rollers 310 can be adjusted in the up-down and left-right directions relative to the frame. Specifically, the first roller seat 330 is movably mounted on the frame via a third driving member. In a preferred embodiment, the third driving component includes a first servo module 510 and a second servo module 520. The first servo module 510 includes a first slide rail 511 and a first sliding part 512. The second servo module 520 includes a second slide rail 521 and a second sliding part 522. The first slide rail 511 extends horizontally and is disposed on the frame. The first sliding part 512 is slidably connected to the first slide rail 511. The second slide rail 521 extends vertically and is disposed on the first sliding part 512. The second sliding part 522 is slidably connected to the second slide rail 521. The first roller seat 330 is fixedly disposed on the second sliding part 522.

[0075] In this embodiment, both the first servo module 510 and the second servo module 520 are configured as linear servo modules.

[0076] It is worth mentioning that the configuration of the first servo module 510 and the second servo module 520 is a preferred embodiment. In some other embodiments, the movement and adjustment of the first roller 310 relative to the frame in the up-down and left-right directions can also be controlled by other driving components such as drive cylinders and electric push rods. No further limitations are made here.

[0077] In step S200, refer to Figure 5 , Figure 6 , Figure 10As shown, the fifth servo module 550 is controlled to make the fifth sliding part 552 slide downward relative to the fifth slide rail 551, thereby driving the fixed end of the second motor 620 to descend on the frame, and then driving the tail top 200 to descend and press against the center of the upper end surface of the wheel hub blank 700. Since the tail top 200 and the support 100 rotate at the same speed, the tail top 200 will not rub against each other when it comes into contact with the wheel hub blank 700. The first servo module 510 and the second servo module 520 are controlled to adjust the position of the first roller 310, so that the first roller 310 finally presses against the upper end surface of the wheel hub blank 700. After contacting the wheel hub blank 700, the first roller 310 can roll under the drive of the wheel hub blank 700. The tail top 200 and the first roller 310 work together to reliably press the wheel hub blank 700 onto the support 100.

[0078] After the above work is completed, step S300 is performed. In step S300, the fifth sliding part 552 is controlled to continue sliding downward relative to the fifth slide rail 551, so that the tail top 200 continues to move downward and stamps the central shaft hole of the hub blank 700.

[0079] Specifically, refer to Figure 2 As shown, a support base 110 is fixedly inserted into the through hole 101. A support block 120 is retractably disposed above the support base 110 within the through hole 101. The support block 120 is positioned directly opposite the tail top 200. An elastic element 130 is disposed between the support base 110 and the support block 120. In this embodiment, the support base 110 and the support block 120 provide support for the wheel hub blank 700 on the support 100 corresponding to the hollowed-out portion of the through hole 101. (Refer to...) Figure 11 As shown, the tail top 200 continues to move downward and stamps the central shaft hole of the wheel hub blank 700. During the process, the central part of the wheel hub blank 700 deforms and is partially pressed into the through hole 101. At this time, the support seat 110 is squeezed by the wheel hub blank 700 and can retract downward into the through hole 101 to provide reliable and effective support for this part of the wheel hub blank 700. Together with the tail top 200, the central part of the wheel hub blank 700 is stamped to initially form the shaft hole structure.

[0080] Furthermore, an elastic element 130 is provided between the support base 110 and the support block 120. When the wheel hub blank 700 is spun into a wheel hub forming part 800 in a subsequent step, the wheel hub forming part 800 is pushed upward and separated from the support base 100, that is, the wheel hub forming part 700 is separated from the support base 110, and the support base 110 can automatically reset upward under the elastic force of the elastic element 130.

[0081] In this embodiment, the elastic element 130 is configured as a spring.

[0082] Specifically, continue to refer to Figure 2As shown, the side wall of the support block 120 protrudes and is provided with a limiting groove 121, and the wall of the through hole 101 is correspondingly provided with a limiting head 102. The limiting groove 121 extends along the axial direction of the through hole 101, and the limiting head 102 is slidably disposed within the limiting groove 121. The setting of the limiting head 102 and the limiting groove 121 can provide a limit for the extension and retraction of the support base 110 within the through hole 101.

[0083] After the tailstock is stamped against the middle part of the wheel hub blank, step S300 is performed. In step S300, the second sliding part 522 continues to slide downward relative to the second slide rail 521, thereby driving the first roller 310 to downwardly press the upper end surface of the wheel hub blank 700 through the first roller seat 330. (Continue referring to...) Figure 11 As shown, in this embodiment, both first rollers 310 are spun onto the upper end face of the hub blank 700. After the first rollers 310 are pressed down to a certain height, the first sliding part 512 is controlled to slide relative to the first slide rail 511, so that the two first rollers 310 continue to move inward toward the tail top 200 and spun onto the upper end face of the hub blank 700. This allows the stepped spun surface 311 on the first rollers 310 to fully spun onto the upper end face of the hub blank 700 to spun and form the shaft end portion of the upper end face of the hub blank 700, and to cooperate with the tail top 200 to form the shaft hole structure.

[0084] After the above work is completed, proceed to step S500. It is worth noting that before step S500 begins, the first servo module 510 and the second servo module 520 need to be controlled to remove the first roller 310 from the hub blank, so as to provide space for the second roller 320 to perform spinning operations. Specifically, refer to... Figure 1 , Figure 3 , Figure 7 As shown, the second rollers 320 are arranged in pairs on opposite sides of the support 100 along the second direction, and each second roller 320 is rotatably mounted on a corresponding second roller seat 340. In this embodiment, the first direction is preferably perpendicular to the second direction. In this embodiment, the second rollers 320 can also be adjusted in the up-down and left-right directions relative to the frame. Specifically, the second roller seat 340 is movably mounted on the frame via a fourth driving member. In a preferred embodiment, the fourth driving component includes a third servo module 530 and a fourth servo module 540. The third servo module 530 includes a third slide rail 531 and a third sliding part 532. The fourth servo module 540 includes a fourth slide rail 541 and a fourth sliding part 542. The third slide rail 531 extends horizontally and is disposed on the frame. The third sliding part 532 is slidably connected to the third slide rail 531. The fourth slide rail 541 extends vertically and is disposed on the third sliding part 532. The fourth sliding part 542 is slidably connected to the fourth slide rail 541. The second roller seat 340 is fixedly disposed on the fourth sliding part 542.

[0085] In this embodiment, both the third servo module 530 and the fourth servo module 540 are configured as linear servo modules.

[0086] It is worth mentioning that the configuration of the third servo module 530 and the fourth servo module 540 is a preferred embodiment. In some other embodiments, the movement and adjustment of the second roller 320 relative to the frame in the up-down and left-right directions can also be controlled by other driving components such as drive cylinders and electric push rods. No further limitations are made here.

[0087] In step S500, refer to Figure 7 , Figure 12 As shown, the third servo module 530 and the fourth servo module 540 are controlled to adjust the position of the second roller 320, so that the two second rollers eventually press together against the suspended part of the upper end face of the hub blank relative to the support. After the second roller 320 contacts the hub blank 700, it can roll under the drive of the hub blank 700. Then, the fourth sliding part 542 is controlled to slide downward relative to the fourth slide rail 541, so that the arc-shaped spinning surface 321 of the two second rollers 320 continues to spin downward against the upper end face of the hub blank 700, thereby folding the part of the upper end face of the hub blank 700 that is suspended relative to the support 100 inward and abutting against the side wall of the support 100, thereby forming the hub forming part 800, i.e., the rotor hub.

[0088] After the wheel hub part is formed, proceed to step S600. (Refer to...) Figure 5 , Figure 12 and Figure 13 As shown, the fifth servo module 550 is controlled to make the fifth sliding part 552 slide upward relative to the fifth slide rail 551, thereby driving the fixed end of the second motor 620 to rise above the frame, which in turn drives the tail top 200 to rise and gradually detach from the hub forming part 800. It is worth mentioning that after the tail top 200 rises and detaches from the hub forming part 800, the first motor 610 and the second motor 620 are controlled to stop working, thereby stopping the rotation of the support 100 and the tail top 200.

[0089] Next, proceed to step S700, continuing as described above. Figure 12 and Figure 13 As shown, the unloading disc 400 is raised to lift the hub forming part 800 upward and separate it from the support 100, so that the formed hub forming part 800 can be removed from the support 100, thus obtaining the spun rotor hub.

[0090] In a preferred embodiment, a hydraulic cylinder (not shown) is provided on the frame, and the unloading disc 400 is fixedly installed on the drive end of the hydraulic cylinder. The hydraulic cylinder can control the unloading disc 400 to rise and fall on the support 100.

[0091] In this embodiment, a material ejector plate support 410 is also provided on the frame, which is adapted to support the material ejector plate 400 when the material ejector plate 400 is not raised relative to the frame.

[0092] The spinning fixture provided in this embodiment has a simple structure and is easy to use. The spinning process for wheel hubs is simple, and wheel hub parts 800 can be manufactured by spinning in a single pass. This can effectively improve the complex process of multi-pass spinning in the prior art, effectively improve production efficiency, and reduce production costs.

[0093] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A process for spinning forming a wheel hub, characterized in that, An application for spinning fixtures, the spinning fixture being mounted on a spinning machine tool, the spinning machine tool including a frame and a first drive member and a second drive member mounted on the frame, the second drive member being located above the first drive member, the spinning fixture comprising: A support (100) is disposed on the first driving member and is used to place a blank part. The diameter of the blank part is larger than the diameter of the support (100). A through hole (101) is opened at the center of the support (100) along its own axial direction. The first driving member can control the support (100) to rotate along its own axial direction. The tail top (200) is disposed on the second driving member and coaxially arranged with the through hole (101). The second driving member can control the tail top (200) to rise and fall on the support (100) and control the tail top (200) to rotate along its own axial direction. The roller assembly includes a first roller (310) and a second roller (320) that are rotatably disposed on the frame. The side end face of the first roller (310) in the radial direction is configured as a stepped spinning surface (311), and the side end face of the second roller (320) in the radial direction is configured as an arc spinning surface (321). The ejector plate (400) is vertically mounted on the frame. The ejector plate (400) is adapted to rise relative to the support (100) after the blank is spun and formed, so as to lift the spun blank and detach it from the support (100). A support base (110) is fixedly inserted into the through hole (101). A support block (120) is retractably provided above the support base (110) in the through hole (101). The support block (120) is positioned opposite the tail top (200). An elastic element (130) is provided between the support base (110) and the support block (120). The wheel hub spinning process mainly includes the following steps: S100, Place the wheel hub blank (700) on the support (100), and control the support (100) and the tail top (200) to rotate at the same speed; S200, the tail top (200) and the stepped spinning surface (311) of the first roller (310) are pressed together against the hub blank (700); S300, the tail top (200) continues to move downward to press and form the shaft hole at the center of the hub blank (700). During the process, the center of the hub blank (700) deforms and is partially pressed into the through hole (101) to initially form the shaft hole structure. S400, the first roller (310) continues to move downward and spins the hub blank (700) inward toward the tail top (200) so that the stepped spinning surface (311) can spin the shaft end of the hub blank (700) and cooperate with the tail top (200) to form the shaft hole structure. S500, the arc-shaped spinning surface (321) of the second roller (320) is spun downwards onto the hub blank (700), so that the suspended end of the hub blank (700) is turned inwards and abuts against the side wall of the support (100), and finally a hub forming part (800) is formed. S600, the tail top (200) moves upward and disengages from the wheel hub forming part (800); S700, the ejector plate (400) rises to lift the wheel hub forming part (800) and detach it from the support (100).

2. The wheel hub spinning forming process according to claim 1, characterized in that, The side wall of the support block (120) is provided with a limiting groove (121), and the wall of the through hole (101) is provided with a limiting head (102). The limiting groove (121) extends along the axial direction of the through hole (101), and the limiting head (102) is slidably disposed in the limiting groove (121).

3. The wheel hub spinning forming process according to claim 1, characterized in that, The first rollers (310) are arranged in pairs on opposite sides of the support (100) along the first direction. Each first roller (310) can be rotatably arranged on the corresponding first roller seat (330). The first roller seat (330) is movably arranged on the frame through the third driving member. The second rollers (320) are arranged in pairs on opposite sides of the support (100) along the second direction. Each second roller (320) can be rotatably arranged on the corresponding second roller seat (340). The second roller seat (340) is movably arranged on the frame by the fourth driving member.

4. The wheel hub spinning forming process according to claim 3, characterized in that, The third driving component includes a first servo module (510) and a second servo module (520). The first servo module (510) includes a first slide rail (511) and a first sliding part (512). The second servo module (520) includes a second slide rail (521) and a second sliding part (522). The first slide rail (511) extends horizontally and is disposed on the frame. The first sliding part (512) is slidably connected to the first slide rail (511). The second slide rail (521) extends vertically and is disposed on the first sliding part (512). The second sliding part (522) is slidably connected to the second slide rail (521). The first roller seat (330) is fixedly disposed on the second sliding part (522). The fourth driving component includes a third servo module (530) and a fourth servo module (540). The third servo module (530) includes a third slide rail (531) and a third sliding part (532). The fourth servo module (540) includes a fourth slide rail (541) and a fourth sliding part (542). The third slide rail (531) extends horizontally and is disposed on the frame. The third sliding part (532) is slidably connected to the third slide rail (531). The fourth slide rail (541) extends vertically and is disposed on the third sliding part (532). The fourth sliding part (542) is slidably connected to the fourth slide rail (541). The second roller seat (340) is fixedly disposed on the fourth sliding part (542).

5. The wheel hub spinning forming process according to claim 1, characterized in that, A hydraulic cylinder is provided on the frame, and the unloading disc (400) is fixedly installed on the drive end of the hydraulic cylinder. The hydraulic cylinder can control the unloading disc (400) to rise and fall on the support (100).

6. The wheel hub spinning forming process according to claim 1, characterized in that, The first driving component is configured as a first motor (610), the fixed end of the first motor (610) is fixedly mounted on the frame, and the support (100) is sleeved on the output shaft of the first motor (610) through the through hole (101).

7. The wheel hub spinning forming process according to claim 6, characterized in that, The second driving component includes a second motor (620), the fixed end of the second motor (620) is movably mounted on the frame, the output shaft of the second motor (620) is coaxially mounted with the output shaft of the first motor (610), and the tail top (200) is fixedly mounted on the output shaft of the second motor (620).

8. The wheel hub spinning forming process according to claim 7, characterized in that, The second drive unit also includes a second lifting drive device, which can control the fixed end of the second motor (620) to lift up and down on the frame.

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