Forging tool for automobile axle tube machining and using method of forging tool

Abstract

The invention discloses a forging tool for automobile axle tube machining and a using method thereof, and belongs to the technical field of machining forging, the forging tool comprises a base, moving structures are arranged at the front and rear positions of the center of the upper end face of the base, and second hydraulic telescopic rods are arranged at the front and rear positions of one side of the upper end face of the base; the output ends of the two second hydraulic telescopic rods are fixedly connected with a clamping structure, the clamping structure comprises a fixing plate, the fixing plate is arranged at the output ends of the two second hydraulic telescopic rods, a rotating machine is arranged at the center of the upper end face of the fixing plate, and the output end of the rotating machine penetrates through the upper end face of the fixing plate and extends to the lower end face of the fixing plate. In addition, part of impact force can be absorbed and buffered, the stability, uniformity and sufficient buffering effect of the buffering structure in different directions are guaranteed, and damage to the inner wall of the shaft tube or damage to the clamping structure is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of processing and forging, and particularly relates to a forging tooling for automobile axle tube processing and a using method thereof. Background Art

[0002] The processing technology of automobile axle tubes usually includes multiple links such as forging, heat treatment, machining, etc. Among them, the forging process has a crucial impact on the internal organizational structure and mechanical properties of the axle tubes. Through forging, the crystal grains of metal materials can be refined, internal defects can be eliminated, and the strength, toughness and fatigue life of the axle tubes can be improved.

[0003] The existing forging tooling for automobile axle tube processing mainly has the following deficiencies:

[0004] During the forging process of automobile axle tubes, high positioning accuracy requirements are imposed on the axle tubes. It is very difficult to ensure that the clamping force is evenly distributed on the surface of the axle tubes. If the clamping force is concentrated in some local areas of the axle tubes, large stress concentrations will be generated on the surface of the axle tubes, easily causing defects such as indentations and deformations on the surface of the axle tubes. Especially for some thin-walled automobile axle tubes, uneven clamping force may cause the roundness of the axle tubes to be damaged, affecting their subsequent processing and service performance. Summary of the Invention

[0005] In order to overcome the above defects, the invention provides a forging tooling for automobile axle tube processing and a using method thereof, solving the problems in the prior art.

[0006] To achieve the above purpose, the invention provides the following technical solution: A forging tooling for automobile axle tube processing and a using method thereof, including a base. Moving structures are arranged at the front and rear positions near the center of the upper end surface of the base. Second hydraulic expansion rods are arranged at the front and rear positions on one side of the upper end surface of the base. The output ends of the two second hydraulic expansion rods are fixedly connected with a clamping structure.

[0007] The clamping structure includes a fixing plate. The fixing plate is arranged on the output ends of the two second hydraulic expansion rods. A rotating machine is arranged at the center of the upper end surface of the fixing plate. The output end of the rotating machine penetrates through the upper end surface of the fixing plate and reaches the lower end surface of the fixing plate, and a connecting block is fixedly connected to the end. A rotating disc is fixedly connected to the center of the lower end surface of the connecting block. Connecting rods are arranged at the front and rear positions on both sides of the upper end surface of the rotating disc. The two connecting rods at the front position and the two connecting rods at the rear position are fixedly connected with a second electric expansion rod.

[0008] One side near the center of the upper end surfaces of the two moving structures is fixedly connected with a lower mold. A cooling structure is provided on the inner side wall of the lower mold, and an ejecting structure is provided at the center of the lower inner wall of the lower mold. Four first hydraulic telescopic rods are arranged in a rectangular array at the center of the other side of the upper end surface of the base. The output ends of the four first hydraulic telescopic rods are fixedly connected with a pressing plate, and an upper mold is provided at the center of the lower end surface of the pressing plate.

[0009] As a further solution of the present invention: The two moving structures include two chutes and two motors. The two chutes are respectively arranged at the front and rear of the center of the upper end surface of the base, and the two motors are respectively arranged at the front and rear of the upper end of one side wall of the base. The output ends of the two motors respectively penetrate through one side wall of the base and one side walls of the two chutes to reach the interiors of the two chutes, and the ends are both fixedly connected with two lead screws. Threaded sleeves are sleeved on the outer side walls of the two lead screws, and the lower mold is arranged at the center of the upper end surfaces of the two sliders.

[0010] As a further solution of the present invention: The cooling structure includes a cooling cavity, which is arranged at the center of the inner side wall of the base. A drain valve is provided at the center of the lower part of one side wall of the cooling cavity, and the output end of the drain valve penetrates through one inner side wall of the base to reach one side wall of the base.

[0011] As a further solution of the present invention: The ejecting structure includes a first electric telescopic rod, which is arranged at the center of the lower inner wall of the lower mold, and the output end of the first electric telescopic rod is fixedly connected with an ejecting plate.

[0012] As a further solution of the present invention: Four rotating rods are arranged in a circular array on the outer side wall of the connecting block. Four sliding grooves are arranged in a circular array on the upper end surface of the rotating disc. Sliding blocks are slidably connected in the four sliding grooves. Connecting columns are provided at the centers of the upper end surfaces of the four sliding blocks. Telescopic plates are provided at the centers of one side walls of the four sliding blocks. First telescopic rods are provided at the centers of the two sides of one side wall of the four telescopic plates. Compression springs are sleeved on the outer side walls of the eight first telescopic rods. The eight compression springs are divided into four groups with two in each group. Buffer plates are provided at the centers of one side walls of the four groups of compression springs, and limit switches are provided at the centers of one side walls of the four buffer plates.

[0013] As a further solution of the present invention: The lower mold and the upper mold are mutually adapted.

[0014] As a further solution of the present invention: A water inlet is provided at the center of the upper part of the other side wall of the lower mold, and a control panel is provided at the center of one side of the front end surface of the base.

[0015] As a further solution of the present invention: One ends of the four rotating rods are respectively rotatably connected to the centers of the upper parts of the outer side walls of the four connecting columns.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. When clamping is achieved by moving the telescopic plate towards the inner wall of the shaft tube, the compression spring on the outer wall of the first telescopic rod can absorb and buffer part of the impact force, ensuring the stability, uniformity and sufficient buffering effect of the buffering structure in different directions, avoiding damage to the inner wall of the shaft tube or damage to the clamping structure, and triggering corresponding operations through the limit switch when the buffer plate contacts the inner wall of the shaft tube, preventing equipment damage or shaft tube scrapping caused by abnormal situations such as over-clamping, effectively improving the safety and reliability of the equipment.

[0018] 2. The moving structure composed of a motor, a lead screw, a slider and a chute can adjust the position of the lower die, flexibly move the lower die according to needs, facilitating the placement of the material to be processed and subsequent operations such as taking out the forged shaft tube, improving the flexibility and convenience of the tooling use, and also being beneficial to improving the processing accuracy and efficiency.

[0019] 3. By circulating the coolant in the cooling cavity, it can cool the lower die and the material being forged, timely absorb the heat absorbed by the lower die during the forging process, and control operations such as the discharge and circulation of the coolant through the drain valve, making the cooling process more controllable and efficient, contributing to ensuring the forging quality and extending the service life of the die. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional schematic diagram of the present invention;

[0021] Figure 2 is a three-dimensional front sectional schematic diagram of the present invention;

[0022] Figure 3 is a three-dimensional side sectional schematic diagram of the present invention;

[0023] Figure 4 is a three-dimensional schematic diagram of the clamping structure of the present invention;

[0024] Figure 5 is another perspective three-dimensional view of the clamping structure of the present invention;

[0025] Figure 6 is Figure 2 an enlarged schematic diagram of part A in

[0026] Figure 7 is a process flow schematic diagram of the present invention.

[0027] In the figure: 1. Base; 2. Moving structure; 201. Sliding groove; 202. Motor; 203. Lead screw; 204. Slide block; 3. Lower die; 4. Cooling structure; 401. Cooling cavity; 402. Drain valve; 5. Ejecting structure; 501. First electric telescopic rod; 502. Ejecting plate; 6. First hydraulic telescopic rod; 7. Pressure plate; 8. Upper die; 9. Clamping structure; 901. Fixed plate; 902. Rotary machine; 903. Connecting block; 904. Rotary disk; 905. Connecting rod; 906. Second electric telescopic rod; 907. Rotary rod; 908. Connecting column; 909. Sliding groove; 910. Sliding block; 911. Telescopic plate; 912. First telescopic rod; 913. Compression spring; 914. Buffer plate; 915. Limit switch; 10. Second hydraulic telescopic rod. Detailed implementation mode

[0028] The technical solution of this patent will be further described in detail below in combination with the specific implementation mode.

[0029] Embodiment 1

[0030] As Figure 1 - Figure 7 shown, the present invention provides a technical solution: a forging tooling for automobile axle tube processing and its use method, a forging tooling for automobile axle tube processing and its use method, including a base 1. Moving structures 2 are provided at the front and rear of the center of the upper end surface of the base 1, and second hydraulic telescopic rods 10 are provided at the front and rear of one side of the upper end surface of the base 1. Clamping structures 9 are fixedly connected to the output ends of the two second hydraulic telescopic rods 10. The clamping structure 9 includes a fixed plate 901. The fixed plate 901 is arranged on the output ends of the two second hydraulic telescopic rods 10. A rotary machine 902 is provided at the center of the upper end surface of the fixed plate 901. The output end of the rotary machine 902 penetrates through the upper end surface of the fixed plate 901 and reaches the lower end surface of the fixed plate 901, and a connecting block 903 is fixedly connected to the end. A rotary disk 904 is fixedly connected to the center of the lower end surface of the connecting block 903. Connecting rods 905 are provided at the front and rear of both sides of the upper end surface of the rotary disk 904. A second electric telescopic rod 906 is fixedly connected between the two connecting rods 905 at the front and the two connecting rods 905 at the rear. A lower die 3 is fixedly connected to the center of one side of the upper end surfaces of the two moving structures 2. A cooling structure 4 is provided on the inner side wall of the lower die 3.

[0031] At the center of the inner wall of the lower die 3, there is an ejection structure 5. At the center of the upper end face of the base 1, four first hydraulic telescopic rods 6 are arranged in a rectangular pattern near the other side. The output ends of the four first hydraulic telescopic rods 6 are fixedly connected to a pressing plate 7. At the center of the lower end face of the pressing plate 7, there is an upper die 8. The lower die 3 and the upper die 8 are adapted to each other. By starting the four first hydraulic telescopic rods 6, the pressing plate 7 is driven to rise, and the upper die 8 is driven to rise by the rising of the pressing plate 7. At the upper part near the center of the other side wall of the lower die 3, there is a water inlet. At the center of the front end face of the base 1 near one side, there is a control panel. One end of each of the four rotating rods 907 is rotatably connected to the upper part near the center of the outer side wall of each of the four connecting columns 908.

[0032] The two moving structures 2 include two sliding grooves 201 and two motors 202. The two sliding grooves 201 are respectively arranged at the front and rear of the center of the upper end face of the base 1. The two motors 202 are respectively arranged at the front and rear of the upper part of one side wall of the base 1. The output ends of the two motors 202 respectively pass through one side wall of the base 1 and one side wall of the two sliding grooves 201 and extend into the two sliding grooves 201, and the ends are fixedly connected with two lead screws 203. The outer side walls of the two lead screws 203 are both threadedly sleeved with sliders 204. The lower die 3 is arranged at the center of the upper end faces of the two sliders 204. By starting the motors 202 to drive the lead screws 203 to rotate, the lead screws 203 drive the sliders 204 to slide in the sliding grooves 201, and the lower die 3 is driven to move by the sliders 204, so as to adjust the position of the lower die 3. When adjusted to the appropriate position, after placing the material to be processed inside the lower die 3, by starting the motors 202 to drive the lead screws 203 to rotate, the lead screws 203 drive the sliders 204 to slide in the sliding grooves 201, and the lower die 3 is driven to move by the sliders 204.

[0033] The cooling structure 4 includes a cooling cavity 401. The cooling cavity 401 is arranged at the center of the inner side wall of the base 1. At the lower part near the center of one side wall of the cooling cavity 401, there is a drain valve 402. The output end of the drain valve 402 passes through one inner side wall of the base 1 and extends to one side wall of the base 1. The coolant circulates in the cooling cavity 401 to achieve the purpose of cooling. The coolant absorbs the heat absorbed by the lower die 3 during forging. The drain valve 402 can control the discharge and circulation of the coolant and other operations.

[0034] The ejection structure 5 includes a first electric telescopic rod 501. The first electric telescopic rod 501 is arranged at the center of the inner wall of the lower die 3. The output end of the first electric telescopic rod 501 is fixedly connected to an ejection plate 502. By starting the first electric telescopic rod 501, the ejection plate 502 is pushed to rise, and the forged shaft tube is ejected from the lower die 3.

[0035] Four rotating rods 907 are arranged in a ring on the outer side wall of the connecting block 903. Four sliding grooves 909 are arranged in a ring on the upper end surface of the rotating disk 904. Four sliding blocks 910 are slidably connected inside the four sliding grooves 909. Connecting columns 908 are arranged at the centers of the upper end surfaces of the four sliding blocks 910. Telescopic plates 911 are arranged at the centers of one side walls of the four sliding blocks 910. First telescopic rods 912 are arranged at the positions close to both sides at the centers of one side walls of the four telescopic plates 911. Compression springs 913 are sleeved on the outer side walls of the eight first telescopic rods 912. The eight compression springs 913 are divided into four groups with two in each group. Buffer plates 914 are arranged at the centers of one side walls of the four groups of compression springs 913. Limit switches 915 are arranged at the centers of one side walls of the four buffer plates 914. During the process of the telescopic plate 911 moving towards the inner wall of the shaft tube to achieve clamping and adjustment, the compression springs 913 on the outer side walls of the first telescopic rods 912 will generate elastic deformation and compression due to the force on the telescopic plate 911. The compression springs 913 and the first telescopic rods 912 cooperate to absorb and buffer part of the impact force, ensuring the stability, uniformity and sufficient buffering effect of the buffer structure in different directions.

[0036] The working principle of the present invention is as follows: By starting the four first hydraulic telescopic rods 6, the pressing plate 7 is driven to rise. The upper die 8 is driven to rise by the rising of the pressing plate 7. By starting the motor 202 to drive the lead screw 203 to rotate, the lead screw 203 drives the slider 204 to slide in the sliding groove 201. The lower die 3 is driven to move by the slider 204, so as to adjust the position of the lower die 3. When adjusted to the appropriate position, after placing the material to be processed inside the lower die 3, by starting the motor 202 to drive the lead screw 203 to rotate, the lead screw 203 drives the slider 204 to slide in the sliding groove 201. The lower die 3 is driven to move by the slider 204, so as to adjust the position of the lower die 3. When adjusted to the appropriate position, by starting the four first hydraulic telescopic rods 6, the pressing plate 7 is driven to descend. The upper die 8 is driven to descend by the descending of the pressing plate 7. The upper die 8 descends and cooperates with the lower die 3 to forge the material.

[0037] During the forging process, the material is made to obtain the required shape by the mutual adaptation of the upper die 8 and the lower die 3. During the forging process, the cooling structure 4 cools the lower die 3 and the material being forged. The coolant circulates in the cooling cavity 401 to achieve the purpose of cooling. The coolant absorbs the heat absorbed by the lower die 3 during the forging process. The drain valve 402 can control the discharge and circulation of the coolant and other operations.

[0038] After forging is completed, by activating the four first hydraulic telescopic rods 6, the pressing plate 7 is driven to rise. After the pressing plate 7 rises and drives the upper die 8 to rise, by activating the first electric telescopic rod 501, the ejector plate 502 is pushed to rise, and the forged shaft tube is ejected from the lower die 3. Subsequently, by activating the motor 202 to drive the screw rod 203 to rotate, the screw rod 203 drives the slider 204 to slide in the chute 201, and the lower die 3 is driven to move by the slider 204, thereby adjusting the position of the lower die 3. When it moves to the appropriate position, by activating the rotary machine 902 to drive the connecting block 903 to rotate, the connecting block 903 drives the rotary disk 904 to rotate. When clamping is required, by activating the second electric telescopic rod 906 to extend, the four sliding blocks 910 are pushed to move, thereby realizing the clamping of the four sliding blocks 910 against the inner wall of the shaft tube and taking out the shaft tube from the lower die 3. By adjusting the positions of the four sliding blocks 910 by the second electric telescopic rod 906, the four telescopic plates 911 can be evenly moved closer to or away from the inner wall of the shaft tube, and finally the operation of evenly clamping or loosening the four sides of the inner wall of the shaft tube is realized.

[0039] During the process of the telescopic plate 911 moving towards the inner wall of the shaft tube to achieve clamping and adjustment, the compression spring 913 on the outer side wall of the first telescopic rod 912 will undergo elastic deformation and compression due to the force on the telescopic plate 911. Through the cooperation of the compression spring 913 and the first telescopic rod 912, part of the impact force is absorbed and buffered, ensuring the stability, uniformity and sufficient buffering effect of the buffer structure in different directions, ensuring the smoothness and reliability of the clamping process, and at the same time avoiding excessive force from damaging the inner wall of the shaft tube or damaging the clamping structure 9. When the buffer plate 914 contacts the inner wall of the shaft tube and touches the limit switch 915, the limit switch 915 will trigger corresponding operations, such as sending signals to the control system, and the second electric telescopic rod 906 and the like will stop working, effectively preventing equipment damage or shaft tube scrapping caused by abnormal situations such as over-limiting protection extension and over-clamping.

[0040] Embodiment 2

[0041] Based on the embodiment, as Figure 1-7 shown, the present invention provides a forging tooling for automobile shaft tube processing and its usage method, including the following steps:

[0042] S1. Through the four first hydraulic telescopic rods (6), the pressing plate (7) is driven to rise. By the rise of the pressing plate (7), the upper die (8) is driven to rise or fall. By activating the motor (202) to drive the screw rod (203) to rotate, the screw rod (203) drives the slider (204) to slide in the chute (201), and the lower die (3) is driven to move by the slider (204), thereby adjusting the position of the lower die (3). By the mutual adaptation of the upper die (8) and the lower die (3), the material is obtained in the required shape.

[0043] S2. During the forging process, the coolant circulates in the cooling cavity (401) to achieve the purpose of temperature reduction. The coolant absorbs the heat absorbed by the lower die (3) during the forging process, and the drain valve (402) can control operations such as the discharge and circulation of the coolant.

[0044] S3. After forging is completed, the rotary machine (902) is started to drive the connecting block (903) to rotate. The connecting block (903) drives the rotating disk (904) to rotate. When clamping is required, the second electric telescopic rod (906) is started to extend, pushing the four sliding blocks (910) to move, thereby enabling the four sliding blocks (910) to clamp the inner wall of the shaft tube and take the shaft tube out of the lower die (3). By adjusting the positions of the four sliding blocks (910) through the second electric telescopic rod (906), the four telescopic plates (911) can be evenly moved closer to or away from the inner wall of the shaft tube, ultimately achieving the operation of evenly clamping or loosening the four sides of the inner wall of the shaft tube.

[0045] S4. During the process of the telescopic plate (911) moving towards the inner wall of the shaft tube to achieve clamping and adjustment, the compression spring (913) on the outer wall of the first telescopic rod (912) will undergo elastic deformation and compression due to the force on the telescopic plate (911). Through the cooperation of the compression spring (913) and the first telescopic rod (912), part of the impact force is absorbed and buffered, ensuring the stability, uniformity, and sufficient buffering effect of the buffer structure (9) in different directions. When the buffer plate (914) touches the inner wall of the shaft tube and touches the limit switch (915), the limit switch (915) will trigger corresponding operations, such as sending signals to the control system, and the second electric telescopic rod (906) etc. will stop working, effectively preventing equipment damage or shaft tube scrapping caused by abnormal situations such as over-limiting protection extension and over-clamping.

[0046] The above has made a detailed description of the preferred embodiments of the present invention. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the gist of the present invention.

Claims

1. A forging tooling for the processing of automobile axle tubes, characterized in that, Comprising: A base (1), at the front and rear of the center of the upper end surface of the base (1), moving structures (2) are provided, at the front and rear of one side of the upper end surface of the base (1), second hydraulic telescopic rods (10) are provided, and a clamping structure (9) is fixedly connected to the output ends of the two second hydraulic telescopic rods (10); The clamping structure (9) includes a fixing plate (901), the fixing plate (901) is arranged on the output ends of the two second hydraulic telescopic rods (10), at the center of the upper end surface of the fixing plate (901), a rotating machine (902) is provided, the output end of the rotating machine (902) penetrates through the upper end surface of the fixing plate (901) and leads to the lower end surface of the fixing plate (901), and a connecting block (903) is fixedly connected to the end, at the center of the lower end surface of the connecting block (903), a rotating disk (904) is fixedly connected, on both sides of the upper end surface of the rotating disk (904), at the front and rear, connecting rods (905) are provided, and a second electric telescopic rod (906) is fixedly connected between the two connecting rods (905) at the front and the two connecting rods (905) at the rear; At the center of one side of the upper end surface of the two moving structures (2), a lower mold (3) is fixedly connected, a cooling structure (4) is provided on the inner side wall of the lower mold (3), at the center of the lower inner wall of the lower mold (3), an ejecting structure (5) is provided, at the center of the other side of the upper end surface of the base (1), four first hydraulic telescopic rods (6) are arranged in a rectangular array, and a pressing plate (7) is fixedly connected to the output ends of the four first hydraulic telescopic rods (6), and an upper mold (8) is provided at the center of the lower end surface of the pressing plate (7).

2. The forging tooling for automobile axle tube processing according to claim 1, characterized in that: The two moving structures (2) include two chutes (201) and two motors (202), the two chutes (201) are respectively arranged at the front and rear of the center of the upper end surface of the base (1), the two motors (202) are respectively arranged at the front and rear of the upper end of one side wall of the base (1), the output ends of the two motors (202) respectively penetrate through one side wall of the base (1) and one side wall of the two chutes (201) and lead to the inside of the two chutes (201), and two lead screws (203) are fixedly connected to the ends, and sliders (204) are threadedly sleeved on the outer side walls of the two lead screws (203), and the lower mold (3) is arranged at the center of the upper end surfaces of the two sliders (204).

3. A forging tooling for automobile axle tube processing according to claim 1, characterized in that: The cooling structure (4) includes a cooling cavity (401), the cooling cavity (401) is arranged at the center of the inner side wall of the base (1), at the center of the lower part of one side wall of the cooling cavity (401), a drain valve (402) is provided, and the output end of the drain valve (402) penetrates through one inner side wall of the base (1) and leads to one side wall of the base (1).

4. A forging tooling for automobile axle tube processing according to claim 1, characterized in that: The ejecting structure (5) includes a first electric telescopic rod (501), the first electric telescopic rod (501) is arranged at the center of the lower inner wall of the lower mold (3), and a top plate (502) is fixedly connected to the output end of the first electric telescopic rod (501).

5. A forging tooling for automotive axle tube processing according to claim 1, characterized in that: Four rotating rods (907) are arranged in a ring on the outer side wall of the connecting block (903). Four sliding grooves (909) are arranged in a ring on the upper end surface of the rotating disk (904). Four sliding blocks (910) are slidably connected inside the four sliding grooves (909). Connecting columns (908) are provided at the centers of the upper end surfaces of the four sliding blocks (910). Telescopic plates (911) are provided at the centers of one side walls of the four sliding blocks (910). First telescopic rods (912) are provided at positions near both sides of the centers of one side walls of the four telescopic plates (911). Compression springs (913) are sleeved on the outer side walls of the eight first telescopic rods (912). The eight compression springs (913) are divided into four groups with two in each group. Buffer plates (914) are provided at the centers of one side walls of the four groups of compression springs (913). Limit switches (915) are provided at the centers of one side walls of the four buffer plates (914).

6. The forging tooling for automobile axle tube processing according to claim 1, characterized in that: The lower die (3) and the upper die (8) are mutually adapted to each other.

7. A forging tooling for automotive axle tube processing according to claim 1, characterized in that: A water inlet is provided at a position near the upper part of the center of the other side wall of the lower die (3). A control panel is provided at a position near one side of the center of the front end surface of the base (1).

8. A forging tooling for automotive axle tube processing according to claim 5, characterized in that: One ends of the four rotating rods (907) are respectively rotatably connected to positions near the upper parts of the outer side walls of the four connecting columns (908). A forging tooling for automobile axle tube processing, characterized in that: It includes a forging tooling for automobile axle tube processing according to any one of claims 1-8. S1. Through the four first hydraulic telescopic rods (6), drive the pressing plate (7) to rise. Drive the upper die (8) to rise or fall through the rise of the pressing plate (7). Start the motor (202) to drive the lead screw (203) to rotate. The lead screw (203) drives the slider (204) to slide in the chute (201). Drive the lower die (3) to move through the slider (204), so as to adjust the position of the lower die (3). The required shape of the material is obtained through the mutual adaptation of the upper die (8) and the lower die (3). S2. During the forging process, the coolant circulates in the cooling cavity (401) to achieve the purpose of cooling. The coolant absorbs the heat absorbed by the lower die (3) during the forging process. The drain valve (402) can control operations such as the discharge and circulation of the coolant. S3. When the forging is completed, start the rotary machine (902) to drive the connecting block (903) to rotate. Drive the rotating disk (904) to rotate through the connecting block (903). When clamping is required, start the second electric telescopic rod (906) to extend, push the four sliding blocks (910) to move, and then realize the clamping of the four sliding blocks (910) towards the inner wall of the axle tube to take out the axle tube from the lower die (3). Through the adjustment of the positions of the four sliding blocks (910) by the second electric telescopic rod (906), the four telescopic plates (911) can be evenly moved closer to or away from the inner wall of the axle tube, and finally the operation of evenly clamping or loosening the four sides of the inner wall of the axle tube is realized. S4. During the process of the telescopic plate (911) moving towards the inner wall of the shaft tube to achieve clamping and adjustment, the compression spring (913) on the outer wall of the first telescopic rod (912) will undergo elastic deformation and compression due to the force on the telescopic plate (911). Through the cooperation of the compression spring (913) and the first telescopic rod (912), part of the impact force is absorbed and buffered, ensuring the stability, uniformity, and sufficient buffering effect of the buffer structure (9) in different directions. When the buffer plate (914) touches the inner wall of the shaft tube and touches the limit switch (915), the limit switch (915) will trigger corresponding operations, such as sending signals to the control system, and the second electric telescopic rod (906) etc. will stop working, effectively preventing equipment damage or shaft tube scrapping caused by abnormal situations such as over-limit protection extension and over-clamping.

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