A web spoke reinforced commercial vehicle wheel hub and a production device and method thereof

Abstract

This invention discloses a spoke-reinforced commercial vehicle wheel hub and its production apparatus and method, relating to the field of commercial vehicle wheel hub production technology. The spoke-reinforced commercial vehicle wheel hub includes a hub body comprising reinforcing spokes and an aluminum alloy layer. The production apparatus for the spoke-reinforced commercial vehicle wheel hub includes a base. The production method for the spoke-reinforced commercial vehicle wheel hub includes the following steps: S1: stamping a circular spoke blank from a steel plate. The wheel hub produced by this invention is lightweight, has high hardness at the bolt holes, good wear resistance, and can perform stamping processing at multiple locations on the same stamping device, improving processing efficiency. After stamping, the stamped part can be cooled promptly, and the surface of the stamped part and the interior of the die can be cleaned to avoid affecting the heat dissipation and flatness of the stamped part. Furthermore, the stamped part can be quickly released after being stuck in the die, facilitating demolding.

Description

Technical Field

[0001] This invention relates to the field of commercial vehicle wheel hub manufacturing technology, specifically to a mesh-reinforced commercial vehicle wheel hub and its manufacturing apparatus and method. Background Technology

[0002] Vehicles are mainly divided into commercial vehicles and passenger vehicles. They are automobiles designed and technically used to transport people and goods. Commercial vehicles are mainly divided into two categories: buses and trucks. Because commercial vehicles need to carry a large amount of goods or people, they have higher requirements for the performance and production of wheel hubs.

[0003] Patent application number 2022209528037 discloses a high-strength ductile iron automobile wheel hub, which addresses the problem of poor protective effect of existing wheel hubs during daily use. The proposed solution includes a wheel rim, a spoke fixed to the inner wall of the wheel rim, a central hole on one side of the spoke, and an annular groove on the outer side of one side of the wheel rim. However, because the material is ductile iron, the overall weight of the wheel hub is relatively heavy, and the hardness at the bolt holes is low, resulting in poor wear resistance.

[0004] Patent application number 2020220816390 discloses a stamping device for producing automobile wheel hubs, including a base. A guide post is provided at the upper corner of the base, and a bearing horizontal plate is provided on the upper side of the base. A first lower die base is installed on the upper right side of the bearing horizontal plate along the length direction via a first guide slide rail and a second guide slide rail. A second lower die base is installed on the left side of the first lower die base via the first guide slide rail and the second guide slide rail. A bearing top plate is installed at the upper end of the guide post, and a stamping cylinder is provided at the middle of the upper side of the bearing top plate. However, during the stamping process, a lot of heat is generated, which reduces the rigidity of the stamped part. If heat is not dissipated in time, the stamped part is prone to deformation when stamping again.

[0005] Furthermore, some existing stamping equipment used in wheel hub production requires the use of multiple stamping units to stamp at different positions, resulting in low efficiency. During the stamping process, a lot of dust will fall onto the surface of the stamped parts, affecting heat dissipation. Also, a lot of dust and impurities will fall from the stamped parts and the mold into the die cavity, causing the stamped parts to be placed unevenly during subsequent stamping, affecting stamping accuracy. Moreover, due to the thermal expansion of the stamped parts and the effect of dust, the stamped parts may get stuck in the die cavity, making it difficult to demold. Summary of the Invention

[0006] The technical problem to be solved by this invention is to overcome the existing defects and provide a mesh-reinforced commercial vehicle wheel hub, its production device and production method. The produced wheel hub is lightweight, has high hardness at the bolt holes, and good wear resistance. It can perform stamping processing at multiple positions on the same stamping device, improving processing efficiency. After stamping, the stamped part can be cooled in time, and the surface of the stamped part and the inside of the die can be cleaned to avoid affecting the heat dissipation and flatness of the stamped part. Moreover, the stamped part can be quickly released after being stuck in the die, facilitating demolding. This invention can effectively solve the problems in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a mesh-reinforced commercial vehicle wheel hub, comprising a hub body, the hub body comprising reinforcing mesh spokes and an aluminum alloy layer, the reinforcing mesh spokes comprising a circular reinforcing spoke plate, the inner side of the reinforcing spoke plate being provided with reinforcing spokes, the end of the reinforcing spokes away from the reinforcing spoke plate being provided with a reinforcing mesh, the reinforcing mesh being composed of two hollowed-out semi-cylinders, both ends of the reinforcing mesh being provided with bearing housing reinforcing steel rings, and sleeve holes being uniformly opened at the edge of the reinforcing spoke plate, with bolt hole sleeves penetrating through the sleeve holes;

[0008] The aluminum alloy layer is wrapped around the outer and inner sides of the reinforcing mesh.

[0009] The reinforced mesh can directly mate with the bearing in the bearing seat to bear the bearing load and improve the hardness of the bearing seat. It is also made of aluminum alloy, which makes the overall weight of the wheel hub lighter. The bolt hole sleeve can effectively improve the hardness of the bolt hole by setting bolt hole sleeve.

[0010] A production apparatus for a mesh-reinforced commercial vehicle wheel hub is disclosed. The apparatus includes a stamping assembly, which comprises a base. Guide pillars are provided at the four right angles of the base's surface. A top seat is provided at the top of each guide pillar. A movable seat is sleeved on the guide pillar. A hydraulic cylinder is provided in the middle of the top seat. An upper die seat is provided on the bottom surface of the movable seat. A punch is provided on the bottom surface of the upper die seat. A lower die seat is slidably connected to the surface of the base. A first die and a second die are respectively provided on both sides of the lower die seat's surface. Bottom grooves are correspondingly formed on the bottom surfaces of both the first and second dies. A switching unit is provided in the middle of the base. After the stamping part is placed into the first or second die, the hydraulic cylinder is activated to drive the punch downwards, causing the punch to engage with the first or second die, thus achieving the stamping of the stamping part.

[0011] A positioning unit is provided in the middle of the surface of the base. The positioning unit includes first electric push rods symmetrically arranged on both sides of the surface of the base. The top of the first electric push rods on both sides is provided with an annular metal seat through a side seat. The bottom surface of the annular metal seat is uniformly provided with telescopic rods. The bottom end of the telescopic rod is provided with a positioning ring. The bottom surface of the positioning ring is uniformly provided with air holes. The positioning unit can use the contraction of the first electric push rod to drive the annular metal seat to move downward. After the bottom surface of the positioning ring is in contact with the surface of the stamping part, the annular metal seat continues to move downward, the telescopic rod contracts, and the spring is compressed. The positioning of the stamping part can be achieved by using the downward pressure of the positioning ring and the reaction force of the spring. The outer wall of the positioning ring is in contact with the inner wall of the first die and the second die, and the inner wall of the positioning ring is in contact with the outer wall of the cylindrical seat of the punch.

[0012] Both the first and second dies are provided with a material discharge unit at their bottoms. The material discharge unit includes a pusher seat. A mating groove is provided in the middle of the top surface of the pusher seat. A third electric push rod is provided in the mating groove. The top of the third electric push rod is provided with a top block that slides with the mating groove. When the pusher seat is located at the bottom of the first or second die, the extension of the third electric push rod drives the top block to move upward, thereby lifting the stamped part.

[0013] Preferably, the punch includes a cylindrical base, a central post is provided in the middle of the bottom surface of the cylindrical base, fan-shaped punches are uniformly provided around the central post on the bottom surface of the cylindrical base, and sleeve hole punches are uniformly provided at the edge of the bottom surface of the cylindrical base. The central post is used for punching the central hole of the circular spoke blank, the fan-shaped punches are used to realize the stamping and forming of the reinforcing spokes, and the sleeve hole punches are used to punch the sleeve hole.

[0014] Preferably, the switching unit includes a slide groove, a screw is rotatably connected to the middle of the slide groove, a slide block is slidably connected inside the slide groove, the slide block is threadedly connected to the screw through a threaded hole in the middle, and the top of the slide block is fixedly connected to the bottom surface of the lower mold base.

[0015] Preferably, the end face of the base is provided with a drive motor, the output shaft of the drive motor is fixedly connected to the end of the screw, the drive motor is a servo motor, the switching unit uses the drive motor to drive the screw to rotate, thereby realizing the sliding of the slide, and then by making the drive motor rotate forward and backward, the reciprocating linear sliding of the slide can be realized, thereby driving the reciprocating linear sliding of the lower mold base, thereby realizing the position switching between the first die and the second die.

[0016] Preferably, the outer side of the positioning ring is uniformly provided with branch pipes communicating with the top of the air hole, the outer side of the positioning ring is sleeved with an annular pipe, the inner side of the annular pipe is connected to one end of the outer side of the branch pipe, and the side of the annular pipe is provided with a flexible tube.

[0017] Preferably, an air pump is provided on one side of the base surface, one end of the air pump is connected to one end of the hose, a distance sensor and an electromagnet are evenly provided on the top surface of the positioning ring, and a temperature sensor is embedded in the bottom of the positioning ring. The air pump draws air through the hose to make the air hole a negative pressure state, so that it can be adsorbed when the bottom surface of the positioning ring is in contact with the surface of the stamping part. The distance sensor is used to detect the distance between the top surface of the positioning ring and the bottom surface of the annular metal base, the temperature sensor is used to detect the temperature of the surface of the stamping part, and the electromagnet generates magnetism after being energized, so that the annular metal base can be adsorbed by magnetic attraction.

[0018] Preferably, the bottom groove is symmetrically provided with side grooves on both sides, and a second electric push rod is provided in the side groove. The telescopic end of the second electric push rod is provided with a mounting seat that slides with the side groove. The mounting seats on both sides are fixedly connected to the two ends of the push seat respectively. The discharge unit can use the retraction of the second electric push rod to drive the push seat to move, so as to discharge the stamped waste material from the bottom groove of the first die and the second die.

[0019] Preferably, the telescopic end of the hydraulic cylinder is fixedly connected to the center of the surface of the movable seat, and a spring is sleeved on the telescopic rod, which can quickly return to its original position after the telescopic rod retracts.

[0020] A method for producing a spoke-reinforced commercial vehicle wheel hub, the method utilizing the production apparatus to produce the spoke-reinforced commercial vehicle wheel hub, comprising the following steps:

[0021] S1: A circular spoke blank is punched out from a steel plate. The circular spoke blank is placed in the first die cavity. The positioning unit is used to position the circular spoke blank. The hydraulic cylinder is activated to drive the punch to move downward and cooperate with the first die cavity to punch out the center hole of the circular spoke blank, thus obtaining the first circular spoke blank.

[0022] S2: After the center hole is punched, the positioning unit blows air to the surface of the circular spoke blank to dissipate heat and cleans the surface of the circular spoke blank. The third electric push rod drives the push seat to reciprocate to dissipate heat from the bottom surface of the circular spoke blank.

[0023] S3: The bottom surface of the positioning ring is attached to the surface of the circular spoke blank. The positioning unit is used to adsorb the surface of the circular spoke blank, and the first electric push rod is extended to lift the circular spoke blank. The switching unit is used to move the second concave mold to the bottom of the convex mold. The first electric push rod is retracted to place the circular spoke blank in the second concave mold.

[0024] S4: Start the hydraulic cylinder to drive the punch to move downward, punch out the reinforcing spokes and the sleeve hole, and obtain the second circular spoke blank. Use the discharge unit to discharge the waste material at the bottom of the first and second dies.

[0025] S5: The bolt hole sleeve is pressed into the sleeve hole using a press, and the bolt hole sleeve and the sleeve hole are interference fit to obtain the finished product of the reinforced spoke plate. The two steel plates are stamped into two identical hollow semi-cylinders using another stamping component.

[0026] S6: Place two hollowed-out semi-cylinders into the welding fixture, and then place the prepared reinforcing spokes into the fixture. First, weld each of the reinforcing spokes to the outside of the two hollowed-out semi-cylinders in sequence. Then, weld the joint of the two hollowed-out semi-cylinders together to form a reinforcing mesh, thus obtaining the reinforcing mesh spokes.

[0027] S7: Place the reinforcing mesh spokes in a liquid forging mold, pour in molten aluminum, and remove it after the molten aluminum cools and solidifies. This will result in both the outer and inner sides of the reinforcing mesh spokes being covered with an aluminum alloy layer, thus obtaining a wheel hub blank. Subsequent heat treatment and other post-processing processes will then be carried out to obtain the finished wheel hub.

[0028] Compared with the prior art, the present invention has the following advantages:

[0029] 1. When the surface temperature of a circular spoke blank is too high, with the positioning ring in contact with the surface of the circular spoke blank, an air pump pressurizes the gas and discharges it through an air hole. The discharged high-pressure airflow creates a gap between the bottom surface of the positioning ring and the surface of the circular spoke blank. The discharged high-pressure airflow dissipates heat from the surface of the circular spoke blank and cleans the surface of the circular spoke blank, removing dust and impurities. After the pusher is moved to the middle of the bottom side of the first and second dies, the pusher is driven to slide back and forth by the second electric push rod, thereby achieving heat dissipation from the bottom surface of the circular spoke blank and accelerating the heat dissipation speed of the circular spoke blank.

[0030] 2. In this invention, after the circular spoke blank is stuck in the die, the electromagnet is activated and intermittently energized. The electromagnet intermittently generates magnetic attraction force. The intermittent magnetic attraction force generated by the electromagnet on the annular metal seat causes the positioning ring to jerk, which in turn drives the circular spoke blank to jerk upward, thus loosening the circular spoke blank.

[0031] 3. In this invention, while the circular spoke blank is still stuck in the die, the first electric push rod is slightly retracted, and the air pump stops working. The electromagnet is intermittently energized to realize the up-and-down reciprocating motion of the positioning ring. The positioning ring vibrates and impacts the surface of the circular spoke blank, causing the circular spoke blank to vibrate downward. Then, the push seat moves to the bottom center of the first or second die, causing the third electric push rod to reciprocate and extend at high frequency. The top block impacts the bottom surface of the circular spoke blank at high frequency, causing the circular spoke blank to vibrate upward at high frequency, thereby realizing the upward demolding of the circular spoke blank.

[0032] 4. When dust or impurities remain in the first or second die, the present invention can align the positioning ring with the first or second die, activate the air pump to exhaust air, and use the airflow discharged from the air hole to clean the first or second die. During the cleaning process of the circular spoke blank surface or the first or second die, the electromagnet is intermittently activated to generate a magnetic attraction force on the annular metal seat, thereby realizing the up-and-down reciprocating motion of the positioning ring and generating a fluctuating airflow from the air hole, which improves the cleaning effect on the circular spoke blank surface or the first or second die.

[0033] 5. This invention utilizes a drive motor to rotate a screw, thereby enabling the slide to slide. By rotating the drive motor in both directions, the slide can reciprocate linearly, which in turn drives the lower die to reciprocate linearly, allowing for position switching between the first and second dies. This enables the same stamping assembly to perform stamping processing on circular spoke blanks at multiple positions, effectively improving work efficiency, reducing labor intensity, and saving production and labor costs. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the hub structure of the present invention;

[0035] Figure 2 This is a schematic diagram of the cross-sectional structure of the wheel hub of the present invention;

[0036] Figure 3 This is a schematic diagram of the reinforced mesh structure of the present invention;

[0037] Figure 4 This is a schematic diagram of the structure of the first circular spoke blank of the present invention;

[0038] Figure 5 This is a schematic diagram of the structure of the second circular spoke blank of the present invention;

[0039] Figure 6 This is a schematic diagram of the reinforced spoke structure of the present invention;

[0040] Figure 7 This is a schematic diagram of the reinforcing mesh structure of the present invention;

[0041] Figure 8 This is a schematic diagram of the stamping component structure of the present invention;

[0042] Figure 9 This is a schematic diagram of the bottom structure of the stamping assembly of the present invention;

[0043] Figure 10 This is a schematic diagram of the axial structure of the stamping assembly of the present invention;

[0044] Figure 11 For the present invention Figure 10 Enlarged structural diagram at point A in the middle;

[0045] Figure 12 This is a schematic diagram of the cross-sectional structure of the positioning ring of the present invention;

[0046] Figure 13 This is a schematic diagram of the material discharge unit structure of the present invention;

[0047] Figure 14 This is a schematic diagram of the cross-sectional structure of the push base of the present invention.

[0048] In the diagram: 1. Hub body; 101. Reinforcing mesh; 102. Bearing housing reinforcing steel ring; 103. Reinforcing spokes; 1031. Reinforcing spokes; 104. Sleeve hole; 1041. Bolt hole sleeve; 2. Aluminum alloy layer; 3. Base; 301. Guide post; 302. Top seat; 303. Movable seat; 304. Hydraulic cylinder; 305. Upper die base; 306. Punch; 3061. Center post; 3062. Fan-shaped punch; 3063. Sleeve hole punch; 307. Lower die base; 308. First die cavity; 309. Second die cavity; 4. Switching unit; 401. Slide groove; 402. Screw; 4 03. Slide; 404. Drive motor; 5. Positioning unit; 501. First electric push rod; 502. Side seat; 503. Annular metal seat; 504. Telescopic rod; 5041. Spring; 505. Positioning ring; 506. Air hole; 507. Branch pipe; 508. Annular pipe; 509. Hose; 510. Air pump; 511. Distance sensor; 512. Temperature sensor; 513. Electromagnet; 6. Discharge unit; 601. Side groove; 602. Second electric push rod; 603. Mounting base; 604. Push seat; 605. Mating groove; 606. Third electric push rod; 607. Top block. Detailed Implementation

[0049] 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.

[0050] First Embodiment

[0051] Please see Figure 1-7This embodiment provides a technical solution: a mesh-reinforced commercial vehicle wheel hub, including a hub body 1, the hub body 1 including reinforcing mesh spokes and an aluminum alloy layer, the reinforcing mesh spokes including a circular reinforcing spoke plate 103, the inner side of the reinforcing spoke plate 103 is provided with reinforcing spokes 1031, the end of the reinforcing spokes 1031 away from the reinforcing spoke plate 103 is provided with a reinforcing mesh 101, the reinforcing mesh 101 is composed of two hollow semi-cylinders, both ends of the reinforcing mesh 101 are provided with bearing chamber reinforcing steel rings 102, and sleeve holes 104 are evenly opened at the edge of the reinforcing spoke plate 103, and bolt hole sleeves 1041 pass through the sleeve holes 104.

[0052] An aluminum alloy layer is wrapped around the outer and inner sides of the reinforcing mesh.

[0053] Specifically, the reinforced mesh can directly mate with the bearing at the bearing position to bear the bearing load and improve the hardness of the bearing position. In addition, the use of aluminum alloy material makes the overall weight of the wheel hub lighter. The bolt hole sleeve 1041 is set at the bolt hole to effectively improve the hardness of the bolt hole.

[0054] The reinforcing mesh spokes can be made of ordinary steel plates, and the raw materials are readily available. The reinforcing spoke plate 103 and the bolt hole sleeve 1041 adopt an interference fit to prevent loosening and detachment, ensuring high safety. The manufacturing process of the reinforcing mesh spokes does not involve sand casting or core making, resulting in no pollution, environmental protection, and energy saving. The aluminum alloy is made using liquid forging technology to prevent internal porosity defects. The reinforcing mesh spokes can greatly improve the overall strength of the wheel hub body 1.

[0055] Please see Figure 1-11 This embodiment also provides a technical solution: a production device for a mesh-reinforced commercial vehicle wheel hub. The production device is used to produce a mesh-reinforced commercial vehicle wheel hub. The production device includes a stamping assembly, which includes a base 3. Guide pillars 301 are provided at each of the four right angles of the surface of the base 3. A top seat 302 is provided at the top of each guide pillar 301. A movable seat 303 is sleeved on the guide pillar 301. A hydraulic cylinder 304 is provided in the middle of the top seat 302. The telescopic end of the hydraulic cylinder 304 is fixedly connected to the middle of the surface of the movable seat 303. An upper die seat 305 is provided on the bottom surface of the movable seat 303. A punch 306 is provided on the bottom surface of the upper die seat 305. The surface of the base 3... A lower die base 307 is slidably connected to the base 3. A first die 308 and a second die 309 are respectively provided on both sides of the surface of the lower die base 307. The bottom surfaces of the first die 308 and the second die 309 are respectively provided with bottom grooves. A switching unit 4 is provided in the middle of the base 3. Specifically, after the circular spoke blank is placed into the first die 308 or the second die 309, the hydraulic cylinder 304 is activated to drive the punch 306 to move downward, so that the punch 306 cooperates with the first die 308 or the second die 309, thereby realizing the stamping of the circular spoke blank. The inner walls of the first die 308 and the second die 309 are both clearance-fitted with the circumferential surface of the circular spoke blank.

[0056] More specifically, the punch 306 includes a cylindrical base, a central post 3061 is provided in the middle of the bottom surface of the cylindrical base, fan-shaped punches 3062 are uniformly provided around the central post 3061 on the bottom surface of the cylindrical base, and sleeve hole punches 3063 are uniformly provided at the edge of the bottom surface of the cylindrical base. The central post 3061 is used for punching the central hole of the first circular spoke blank, the fan-shaped punches 3062 are used to realize the stamping and forming of the reinforcing spokes 1031, and the sleeve hole punches 3063 are used to punch the sleeve hole 104. The first die 308 is correspondingly matched with the central post 3061, and the second die 309 can be correspondingly matched with the central post 3061, the fan-shaped punches 3062 and the sleeve hole punches 3063.

[0057] A positioning unit 5 is provided in the middle of the surface of the base 3. The positioning unit 5 includes first electric push rods 501 symmetrically arranged on both sides of the surface of the base 3. The top of the first electric push rods 501 on both sides is provided with annular metal seats 503 through side seats 502. Telescopic rods 504 are evenly arranged on the bottom surface of the annular metal seats 503. A positioning ring 505 is provided at the bottom end of the telescopic rods 504. A spring 5041 is sleeved on the telescopic rods 504. The spring 5041 can quickly return to its original position after the telescopic rods 504 retract. Specifically, the positioning unit 5 can use the retraction of the first electric push rods 501 to drive the annular metal seats 503 to move downward. After the bottom surface of the positioning ring 505 is in contact with the surface of the circular spoke blank, the annular metal seat 503 continues to move downward, the telescopic rods 504 retract, and the spring 5041 is compressed. The positioning of the circular spoke blank can be achieved by using the downward pressure of the positioning ring 505 and the reaction force of the spring 5041.

[0058] The bottom surface of the positioning ring 505 is uniformly provided with air holes 506. The outer side of the positioning ring 505 is uniformly provided with branch pipes 507 that communicate with the top of the air holes 506. The outer side of the positioning ring 505 is sleeved with an annular tube 508. The inner side of the annular tube 508 is connected to one end of the outer side of the branch pipe 507. The side of the annular tube 508 is provided with a flexible tube 509. An air pump 510 is provided on one side of the surface of the base 3. One end of the air pump 510 is connected to one end of the flexible tube 509. The top surface of the positioning ring 505 is uniformly provided with distance sensors 511. Specifically, the air pump 510 draws air through the flexible tube 509 to make the air holes 506 a negative pressure state, so that it can be adsorbed when the bottom surface of the positioning ring 505 is in contact with the surface of the circular spoke blank. The distance sensor 511 is used to detect the distance between the top surface of the positioning ring 505 and the bottom surface of the annular metal seat 503. The air pump 510 can be a pump that can be used for both suction and blowing.

[0059] The bottom of the first die 308 and the second die 309 are both provided with a discharge unit 6. The discharge unit 6 includes a pusher 604. Side grooves 601 are symmetrically opened on both sides of the bottom groove. A second electric push rod 602 is provided in the side groove 601. The telescopic end of the second electric push rod 602 is provided with a mounting seat 603 that slides with the side groove 601. The mounting seats 603 on both sides are fixedly connected to the two ends of the pusher 604 respectively. Specifically, the discharge unit 6 can use the retraction of the second electric push rod 602 to drive the pusher 604 to move, so that the stamped waste material can be discharged from the bottom groove of the first die 308 and the second die 309.

[0060] The switching unit 4 includes a slide groove 401, a screw 402 rotatably connected to the middle of the slide groove 401, and a slide block 403 slidably connected inside the slide groove 401. The slide block 403 is threadedly connected to the screw 402 through a threaded hole in the middle. The top of the slide block 403 is fixedly connected to the bottom surface of the lower mold base 307. A drive motor 404 is provided on the end face of the base 3. The output shaft of the drive motor 404 is fixedly connected to the end of the screw 402. The drive motor 404 is a servo motor. Specifically, the switching unit 4 uses the drive motor 404 to drive the screw 402 to rotate, thereby realizing the sliding of the slide block 403. Then, by making the drive motor 404 rotate forward and backward, the reciprocating linear sliding of the slide block 403 can be realized, thereby driving the reciprocating linear sliding of the lower mold base 307, thereby realizing the position switching between the first die 308 and the second die 309.

[0061] In this embodiment, the stamping assembly utilizes a drive motor 404 to rotate a screw 402, causing the slide block 403 to slide. This moves the first die 308 to a position corresponding to the punch 306, placing the circular spoke blank inside the first die 308. Then, the first electric push rod 501 retracts, causing the positioning ring 505 to move downwards via the annular metal seat 503. After the bottom surface of the positioning ring 505 contacts the surface of the circular spoke blank, the annular metal seat 503 continues to move downwards, and the telescopic rod 504... When the spring 5041 is compressed, the distance between the bottom surface of the annular metal seat 503 and the top surface of the positioning ring 505 reaches the first threshold set by the distance sensor 511. At this time, the positioning effect of the positioning ring 505 on the circular spoke blank is optimal. The positioning ring 505 can be positioned by the downward pressure of the positioning ring 505 and the reaction force of the spring 5041. Next, the hydraulic cylinder 304 is activated to drive the punch 306 to move downward. The center post 3061 at the center of the bottom surface of the punch 306 completes the positioning of the circular spoke blank. Figure 4 The punching of the center hole of the circular spoke blank shown is the first punching, and at this time the extension length of the hydraulic cylinder 304 is insufficient to make the bottom surface of the fan-shaped punch 3062 and the sleeve hole punch 3063 contact the surface of the circular spoke blank.

[0062] After the center hole is punched, the air pump 510 is started, and air is drawn through the hose 509 to create a negative pressure state inside the air hole 506, which can adsorb the circular spoke blank. Then, the first electric push rod 501 is extended to reset the positioning ring 505 upward, thus lifting the circular spoke blank from the first die 308. Then, the switching unit 4 is used to move the second die 309 to the position corresponding to the punch 306, causing the first electric push rod 501 to retract and place the circular spoke blank in the second die 309. The distance between the bottom surface of the annular metal seat 503 and the top surface of the positioning ring 505 reaches the first threshold set by the distance sensor 511 again, realizing the positioning of the circular spoke blank in the second die 309. The hydraulic cylinder 304 is started again to drive the punch 306 downward, and the fan-shaped punch 3062 punches the circular spoke blank, i.e., the second punch, to form the reinforced spoke 1031. During this punching process, the hydraulic cylinder... The extension length of 304 is insufficient to allow the bottom surface of the sleeve hole punch 3063 to contact the surface of the circular spoke blank. Then, the hydraulic cylinder 304 drives the punch 306 to return to its original position, maintaining the circular spoke blank in its original position. The hydraulic cylinder 304 then drives the punch 306 to move downward again, allowing the sleeve hole punch 3063 to punch the circular spoke blank for the third time, thus forming the sleeve hole 104. During this punching process, the extension length of the hydraulic cylinder 304 reaches its maximum. During each punching process, the outer wall of the positioning ring 505 engages with the inner walls of the first die 308 and the second die 309, and the inner wall of the positioning ring 505 engages with the outer wall of the cylindrical seat of the punch 306. After the punching is completed, the second electric push rods 602 on both sides are activated. The retraction of the second electric push rods 602 drives the push seat 604 to move away from the center position, thus pushing the punched waste material out of the bottom groove and cleaning up the waste material.

[0063] Second Embodiment

[0064] Please see Figure 8-14According to the production apparatus for a mesh-reinforced commercial vehicle wheel hub provided in the first embodiment, after the first or second stamping, the circular spoke blank will generate a lot of heat, which will reduce the rigidity of the circular spoke blank. In subsequent stamping processes, the circular spoke blank is prone to deformation. Furthermore, during the stamping process, the vibration generated will shake off a lot of dust and impurities from the mold and the circular spoke blank. After the dust and impurities accumulate on the surface of the circular spoke blank, they will affect the heat dissipation of the circular spoke blank. In addition, the shaken-off dust and impurities can easily penetrate into the circular spoke blank. The gap between the edge of the blank and the inner wall of the die cavity, and the expansion that occurs due to thermal expansion and contraction after the circular spoke blank's temperature rises, causes the edge of the circular spoke blank to fit tightly against the inner wall of the first die cavity 308 or the second die cavity 309, making it difficult to remove the circular spoke blank from the die cavity. Forced removal can easily lead to deformation and wear of the circular spoke blank. Furthermore, falling dust and impurities can easily fall onto the bottom surface of the die cavity, causing the circular spoke blank to be uneven and affecting the stamping accuracy. To solve the above problems:

[0065] A mating groove 605 is provided in the middle of the top surface of the pusher 604. A third electric push rod 606 is provided in the mating groove 605. The top of the third electric push rod 606 is provided with a top block 607 that slides with the mating groove 605. Specifically, when the pusher 604 is located at the bottom of the first die 308 or the second die 309, the extension of the third electric push rod 606 drives the top block 607 to move upward, thereby lifting the circular spoke blank.

[0066] The top surface of the positioning ring 505 is uniformly provided with electromagnets 513, and the bottom of the positioning ring 505 is embedded with a temperature sensor 512. The temperature sensor 512 is used to detect the temperature of the surface of the circular spoke blank. The electromagnets 513 generate magnetism after being energized, and can use magnetic attraction to attract the annular metal seat 503.

[0067] In this embodiment, after each stamping operation, the temperature sensor 512 at the bottom of the positioning ring 505 monitors the surface temperature of the circular spoke blank. When the surface temperature of the circular spoke blank exceeds the threshold set by the temperature sensor 512, it is actively determined that the circular spoke blank is in a high-temperature state after stamping. Continuing subsequent stamping processes could easily lead to deformation of the circular spoke blank. Therefore, after stamping, when the surface temperature of the circular spoke blank is detected to be high, the positioning ring 505 is in contact with the surface of the circular spoke blank. In this state, the air pump 510 is switched to blowing mode, that is, the air pump 510 pressurizes the gas and discharges it through the hose 509, the annular pipe 508 and the branch pipe 507, and finally through the air hole 506. At the same time, the first electric push rod 501 extends upward by a certain length, but still keeps the bottom surface of the positioning ring 505 in contact with the surface of the circular spoke blank. Since the positioning ring 505 is elastically connected to the bottom of the annular metal seat 503 through the telescopic rod 504 and the spring 5041, the high-pressure airflow discharged at this time generates a counter-thrust force on the positioning ring 505, causing the positioning ring to... With the bottom surface of 505 facing upwards and away from the surface of the circular spoke blank, a gap is created between the bottom surface of the positioning ring 505 and the surface of the circular spoke blank. The high-pressure gas generated by the air pump 510 can then act on the surface of the circular spoke blank, thereby achieving heat dissipation and cleaning the surface of the circular spoke blank, removing dust and impurities. Simultaneously, the second electric push rod 602 retracts, moving the push seat 604 to the middle of the bottom side of the first die 308 and the second die 309. Then, the second electric push rod 602 reciprocates, driving... The pusher 604 slides back and forth to dissipate heat from the bottom surface of the circular spoke blank, accelerating the heat dissipation speed. When the temperature sensor 512 detects that the temperature of the surface of the circular spoke blank is lower than the threshold set by the temperature sensor 512, it is determined that the heat dissipation is complete. The air pump 510 switches to the suction state, and at the same time, the positioning ring 505 moves downward to re-adhere to the surface of the circular spoke blank, adsorbing the surface of the circular spoke blank. Then, the extension of the first electric push rod 501 can lift the circular spoke blank upward to achieve demolding.

[0068] However, during the heat dissipation process on the surface of the circular spoke blank, dust and impurities on the surface of the circular spoke blank are scattered in all directions. Some of the dust and impurities can easily enter the gap between the circumferential surface of the circular spoke blank and the inner wall of the die, which will cause the circular spoke blank to get stuck in the die during the demolding process.

[0069] Furthermore, during the process of lifting the circular spoke blank upwards for demolding using the extension of the first electric push rod 501, the telescopic rod 504 first extends, and the spring 5041 is stretched. Therefore, the distance between the top surface of the positioning ring 505 and the bottom surface of the annular metal seat 503 gradually increases. When the distance sensor 511 detects that the distance between the top surface of the positioning ring 505 and the bottom surface of the annular metal seat 503 is greater than the second threshold set by the distance sensor 511, it actively determines that the circular spoke blank is stuck in the die cavity. At this time, the telescopic rod 504 is extended to its longest state. At this time, the electromagnet 513 is activated and intermittently energized. The electromagnet 513 intermittently generates magnetic attraction. The intermittent magnetic attraction generated by the electromagnet 513 on the annular metal seat 503 causes the positioning ring 505 to jerk. Since the positioning ring 505 attracts the circular spoke blank through the air hole 506 at this time, it then drives the circular spoke blank upwards to jerk, thus loosening the circular spoke blank.

[0070] However, while the circular spoke blank remains stuck in the die, the first electric push rod 501 retracts slightly, as does the telescopic rod 504, and the air pump 510 stops working. The adsorption force of the positioning ring 505 on the surface of the circular spoke blank disappears, but the electromagnet 513 remains intermittently energized. At this time, the intermittent magnetic attraction of the electromagnet 513 to the annular metal seat 503 is used to achieve the reciprocating up-and-down movement of the positioning ring 505. This allows the positioning ring 505 to vibrate and impact the surface of the circular spoke blank, causing the circular spoke blank to... The downward vibration continues for a specified time before stopping. Electromagnet 513 is de-energized, and the bottom surface of positioning ring 505 re-fits the surface of the circular spoke blank. Next, the second electric push rod 602 drives the push seat 604 to retract, moving it to the bottom center of the first die 308 or the second die 309. Then, the third electric push rod 606 reciprocates at high frequency, subsequently driving the top block 607 to reciprocate up and down at high frequency. The top block 607 impacts the bottom surface of the circular spoke blank at high frequency, causing the circular spoke blank to... The frequency vibrates upwards, which enables the circular spoke blank to be demolded upwards. This process continues for a specified time and then stops, halting the high-frequency reciprocating extension and retraction of the third electric push rod 606. The third electric push rod 606 then drives the top block 607 upwards, using the top block 607 to lift the circular spoke blank upwards. Since the bottom surface of the positioning ring 505 is now in contact with the surface of the circular spoke blank, the distance between the top surface of the positioning ring 505 and the bottom surface of the annular metal seat 503 decreases. The distance sensor 511 detects the top surface of the positioning ring 505. As the distance between the circular spoke blank and the bottom surface of the annular metal seat 503 continues to decrease, the system actively determines that the circular spoke blank has been successfully unjammed. After successful unjamming, the second electric push rod 602 and the third electric push rod 606 are reset, that is, the push seat 604 is located in the middle of the lower mold seat 307, and the top surface of the top block 607 is flush with the top surface of the push seat 604. The air pump 510 is started again to draw air, so that the positioning ring 505 re-adhere to the surface of the circular spoke blank. Then, the first electric push rod 501 is extended to lift the circular spoke blank and transfer the circular spoke blank.

[0071] After the circular spoke blank is transferred from the first die 308 to the second die 309, or after the circular spoke blank is removed from the second die 309, if the user finds dust or impurities remaining in the first die 308 or the second die 309, the positioning ring 505 is aligned with the first die 308 or the second die 309, and the air pump 510 is started to exhaust air. The airflow discharged from the air hole 506 can then be used to clean the inside of the first die 308 or the second die 309.

[0072] It should be noted that during the cleaning process of the surface of the circular spoke blank or the inside of the first die 308 and the second die 309, the electromagnet 513 is intermittently activated, causing it to intermittently generate a magnetic attraction force on the annular metal seat 503, thereby realizing the up-and-down reciprocating motion of the positioning ring 505. This generates a fluctuating airflow from the air hole 506, improving the cleaning effect on the surface of the circular spoke blank or the inside of the first die 308 and the second die 309.

[0073] Therefore, when the surface temperature of the circular spoke blank is too high, with the positioning ring 505 in contact with the surface of the circular spoke blank, the air pump 510 pressurizes the gas and discharges it through the air hole 506. The discharged high-pressure airflow creates a gap between the bottom surface of the positioning ring 505 and the surface of the circular spoke blank. The discharged high-pressure airflow dissipates heat from the surface of the circular spoke blank and cleans the surface of the circular spoke blank, removing dust and impurities. After the pusher 604 is moved to the middle of the bottom side of the first die 308 and the second die 309, the pusher 604 is driven to slide back and forth by the second electric push rod 602. This allows for heat dissipation from the bottom surface of the circular spoke blank, accelerating its cooling rate. Furthermore, after the circular spoke blank is stuck in the die cavity, the electromagnet 513 is activated and intermittently energized. The electromagnet 513 intermittently generates magnetic attraction, which, combined with the intermittent magnetic attraction of the electromagnet 513 to the annular metal seat 503, causes the positioning ring 505 to jerk, subsequently pulling the circular spoke blank upwards, thus loosening it. Additionally, while the circular spoke blank remains stuck in the die cavity, the first electric push rod 501 slightly retracts, and the air pump 510 stops working, causing the electromagnet... Intermittent energization of 513 enables the positioning ring 505 to reciprocate up and down. The positioning ring 505 vibrates and impacts the surface of the circular spoke blank, causing it to vibrate downwards. This moves the pusher 604 to the bottom center of the first die 308 or the second die 309, causing the third electric push rod 606 to reciprocate at high frequency. The top block 607 impacts the bottom surface of the circular spoke blank at high frequency, causing it to vibrate upwards, thus enabling the circular spoke blank to be demolded upwards. Additionally, if dust or impurities remain in the first die 308 or the second die 309, the positioning ring 505 will contact the first die 308. Corresponding to 08 or the second concave mold 309, the air pump 510 is started to exhaust air. The airflow discharged from the air hole 506 is used to clean the inside of the first concave mold 308 or the second concave mold 309. During the cleaning process of the surface of the circular spoke blank or the inside of the first concave mold 308 and the second concave mold 309, the electromagnet 513 is intermittently started, so that the electromagnet 513 intermittently generates a magnetic attraction force on the annular metal seat 503, realizing the up and down reciprocating motion of the positioning ring 505. Fluctuating airflow is generated from the air hole 506, which improves the cleaning effect on the surface of the circular spoke blank or the inside of the first concave mold 308 and the second concave mold 309.

[0074] Third Embodiment

[0075] Please see Figure 1-14 This embodiment provides a technical solution: a method for producing a mesh-reinforced commercial vehicle wheel hub. This method utilizes a production device to produce the mesh-reinforced commercial vehicle wheel hub, and includes the following steps:

[0076] S1: A circular spoke blank is punched out from a steel plate. The circular spoke blank is placed in the first die cavity 308. The positioning unit 5 positions the circular spoke blank. The hydraulic cylinder 304 is activated to drive the punch 306 downward to cooperate with the first die cavity 308, thus punching out the center hole of the circular spoke blank, obtaining the first circular spoke blank. Figure 4 As shown;

[0077] S2: After the center hole is punched, the positioning unit 5 blows air to the surface of the circular spoke blank to dissipate heat, cleans the surface of the circular spoke blank, and drives the push base 604 to reciprocate to dissipate heat on the bottom surface of the circular spoke blank.

[0078] S3: The bottom surface of the positioning ring 505 is attached to the surface of the circular spoke blank. The positioning unit 5 is used to adsorb the surface of the circular spoke blank, so that the first electric push rod 501 is extended to lift the circular spoke blank. The switching unit 4 is used to move the second concave mold 309 to the bottom of the convex mold 306. The first electric push rod 501 is retracted to place the circular spoke blank in the second concave mold 309.

[0079] S4: Start hydraulic cylinder 304 to drive punch 306 downward, punching out reinforcing spokes 1031 and sleeve holes 104, obtaining the second circular spoke blank, such as Figure 5 As shown, the waste material at the bottom of the first die 308 and the second die 309 is discharged using the discharge unit 6;

[0080] S5: Using a press, the bolt hole sleeve 1041 is pressed into the sleeve hole 104, with the bolt hole sleeve 1041 and the sleeve hole 104 having an interference fit, to obtain the finished product of the reinforced spoke 103, such as... Figure 6 As shown, two steel plates are stamped into two identical hollowed-out semi-cylinders using a separate stamping assembly, as follows: Figure 7 As shown;

[0081] S6: Place the two hollowed-out semi-cylinders into the welding fixture, then place the prepared reinforcing spokes 103 into the fixture. First, weld each reinforcing spoke 1031 to the outer side of the two hollowed-out semi-cylinders in sequence. Then, weld the joint of the two hollowed-out semi-cylinders together to form a reinforcing mesh 101, thus obtaining the reinforcing mesh spokes, as shown. Figure 3 As shown;

[0082] S7: Place the reinforcing mesh spokes in a liquid forging mold, pour in molten aluminum, and remove it after the aluminum cools and solidifies. This results in both the outer and inner sides of the reinforcing mesh spokes being covered with an aluminum alloy layer 2, obtaining a wheel hub blank. Subsequent heat treatment and other post-processing steps then yield the finished wheel hub. Figure 1 and Figure 2 As shown.

[0083] When performing liquid forging, follow these steps:

[0084] S701: Spray coating. Mix aluminum powder, amorphous boron powder and alumina powder with a particle size of less than 20μm in a ratio of 2:5:3. After mixing evenly, add industrial alcohol in a ratio of 1:10. Shake well before spraying and spray evenly onto the reinforcing mesh. Before spraying, the reinforcing mesh needs to be cleaned to remove dust and stains.

[0085] S702: Dry the reinforcing mesh, open the mold, put in the reinforcing mesh, pour in molten aluminum, close the mold, maintain a pressure of 8500-12500KN for 3-5 minutes, the molten aluminum pouring temperature is 650-655℃, after every 3-5 pieces are poured, a release agent needs to be sprayed. Before spraying the first piece with the release agent, the mold needs to be heated to 100-200℃ before spraying.

[0086] S703: After cooling and solidification, open the mold and use the mechanical ejector pins inside the mold to eject the workpiece.

[0087] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A web-spar reinforced commercial vehicle wheel hub, the production of which is implemented by a production device for a web-spar reinforced commercial vehicle wheel hub, characterized in that, The hub body comprises a reinforcing web spoke and an aluminum alloy layer, the reinforcing web spoke comprises a circular structure reinforcing spoke plate, the inner side of the reinforcing spoke plate is provided with a reinforcing spoke, the end of the reinforcing spoke away from the reinforcing spoke plate is provided with a reinforcing web, the reinforcing web is composed of two hollow half cylinders, both ends of the reinforcing web are provided with bearing chamber reinforcing rings, the edge of the reinforcing spoke plate is uniformly provided with a sleeve hole, and a bolt hole sleeve is penetrated in the sleeve hole; The aluminum alloy layer is wrapped on the outer side and the inner side of the reinforcing web spoke; The production device realizes the production of the web spoke reinforced commercial vehicle hub by using a production method, and comprises a stamping assembly, the stamping assembly comprises a base, four straight angles on the surface of the base are each provided with a guide column, the top end of the guide column is provided with a top seat, the guide column is sleeved with a movable seat, the middle part of the top seat is provided with a hydraulic cylinder, the bottom surface of the movable seat is provided with an upper die seat, the bottom surface of the upper die seat is provided with a convex die, the surface of the base is slidably connected with a lower die seat, the surface of the lower die seat is respectively provided with a first concave die and a second concave die, and the middle part of the base is provided with a switching unit; The middle part of the surface of the base is provided with a positioning unit, the positioning unit comprises first electric push rods which are symmetrically arranged on the surface of the base, the top of the first electric push rods on both sides is provided with a ring-shaped metal seat through a side seat, the bottom surface of the ring-shaped metal seat is uniformly provided with a telescopic rod, and the bottom end of the telescopic rod is provided with a positioning ring; The bottom of the first concave die and the second concave die is provided with a discharging unit, the discharging unit comprises a push seat, a matching groove is formed in the top surface of the push seat, and a third electric push rod is arranged in the matching groove; The production method comprises the following steps: S1: a circular spoke blank is punched out from a steel plate, the circular spoke blank is placed in the first concave die, the circular spoke blank is positioned by using the positioning unit, the hydraulic cylinder is started to drive the convex die to move downward and cooperate with the first concave die, so that the center hole of the circular spoke blank is punched out, and a first circular spoke blank is obtained; S2: after the center hole is punched out, the surface of the circular spoke blank is blown and cooled by using the positioning unit, the surface of the circular spoke blank is cleaned, and the bottom surface of the circular spoke blank is cooled by reciprocating movement of the push seat driven by the third electric push rod; S3: the bottom surface of the positioning ring is attached to the surface of the circular spoke blank, the surface of the circular spoke blank is adsorbed by using the positioning unit, the first electric push rod is elongated to lift the circular spoke blank, the second concave die is moved to the bottom of the convex die by using the switching unit, and the circular spoke blank is placed in the second concave die by using the first electric push rod to contract; S4: the hydraulic cylinder is started to drive the convex die to move downward, the reinforcing spoke and the sleeve hole are punched out, a second circular spoke blank is obtained, and the waste at the bottom of the first concave die and the second concave die is discharged by using the discharging unit; S5: the bolt hole sleeve is pressed into the sleeve hole by using a press machine, the bolt hole sleeve is in interference fit with the sleeve hole, the finished product of the reinforcing spoke plate is obtained, and two hollow half cylinders are punched out from two steel plates by using another stamping assembly. S6: the two hollow half cylinders are placed in a welding tool, and the prepared reinforcing spokes are placed in the tool, the reinforcing spokes are welded to the outer sides of the two hollow half cylinders in sequence, and the two hollow half cylinders are welded and combined at the joint to form a reinforcing net, so that the reinforcing net spoke is obtained; S7: the reinforcing net spoke is placed in a liquid die forging mold, aluminum liquid is poured, and the aluminum liquid is taken out after cooling and solidification, so that the outer side and the inner side of the reinforcing net spoke are wrapped with an aluminum alloy layer, a hub blank is obtained, and subsequent heat treatment and other post-processing processes are performed, so that a finished hub is obtained.

2. The web-spike reinforced commercial vehicle wheel hub of claim 1, wherein: The bottom surface of the first and second dies is provided with a bottom groove, the bottom surface of the positioning ring is uniformly provided with a gas hole, and the top end of the third electric push rod is provided with a top block in sliding fit with the matching groove.

3. The web-spike reinforced commercial vehicle wheel hub of claim 1, wherein: The convex die includes a cylindrical seat, a center column is arranged in the middle of the bottom surface of the cylindrical seat, and fan-shaped punches are uniformly arranged around the center column of the bottom surface of the cylindrical seat.

4. The web-spike reinforced commercial vehicle wheel hub of claim 1, wherein: The switching unit includes a sliding groove, a screw rod is rotatably connected to the middle of the sliding groove, and a sliding seat is slidably connected in the sliding groove.

5. The web-spike reinforced commercial vehicle wheel hub of claim 4, wherein: The end surface of the base is provided with a driving motor, the output shaft of the driving motor is fixedly connected with the end of the screw rod, and the driving motor is a servo motor.

6. The web-spike reinforced commercial vehicle wheel hub of claim 2, wherein: The outer side of the positioning ring is uniformly provided with a branch pipe in communication with the top of the gas hole, and the outer side of the positioning ring is sleeved with an annular pipe.

7. The web-spike reinforced commercial vehicle wheel hub of claim 6, wherein: The surface of the base is provided with an air pump, one end of the air pump is in communication with one end of the hose, the top surface of the positioning ring is uniformly provided with a distance sensor and an electromagnet, and the bottom of the positioning ring is embedded with a temperature sensor.

8. The web-spike reinforced commercial vehicle wheel hub of claim 2, wherein: The two sides of the bottom groove are symmetrically provided with side grooves, the second electric push rod is arranged in the side groove, the telescopic end of the second electric push rod is provided with a mounting seat in sliding fit with the side groove, and the mounting seats on the two sides are fixedly connected with the two ends of the push rod.

9. The web-spike reinforced commercial vehicle wheel hub of claim 1, wherein: The telescopic end of the hydraulic cylinder is fixedly connected with the surface middle part of the movable seat, and the telescopic rod is sleeved with a spring.

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