Stamping equipment for processing automobile aluminum alloy parts

Abstract

The application discloses a stamping equipment for automobile aluminum alloy part machining, relates to the plate spinning forming technical field, and aims to solve the technical problem of difficult spinning positioning of special-shaped parts, and comprises a machine tool, a spinning concave die arranged above the machine tool, a spinning convex die, a spinning and forming system, a sliding rail, a positioning adjusting mechanism and a protection conveying assembly. The positioning adjusting mechanism is linked by a rotating wheel, a one-way cylinder, a guide rod, an arc-shaped pipeline, a hollow sphere, a solid sphere and an arc-shaped rod. The positioning adjusting mechanism effectively solves the problems of centrifugal vibration, positioning deviation and surface clamping damage of special-shaped aluminum alloy workpieces in the spinning process due to the non-coincidence of the geometric center and the rotating axis, realizes self-adaptive accurate centering and stable clamping of workpieces with different shapes such as rectangles and circles, and significantly improves the size consistency, forming precision and surface quality of aluminum alloy precision die forgings, thereby providing reliable technical support for high-quality precision die forging of automobile lightweight aluminum alloy parts.

Description

Technical Field

[0001] This invention relates to the field of sheet metal spinning technology, and more specifically, to a stamping equipment for processing automotive aluminum alloy parts. Background Technology

[0002] Under the trend of automotive lightweighting, aluminum alloy wheel hubs, shells and other parts have strict requirements for dimensional consistency, forming accuracy and surface finish. However, traditional equipment processing has prominent defects: centrifugal vibration and positioning offset lead to uneven workpiece wall thickness, which cannot meet precision standards; rigid clamping is prone to scratches and indentations on the workpiece surface, which not only destroys the appearance consistency, but also affects the subsequent assembly compatibility, and weakens the corrosion resistance of aluminum alloy, increasing the repair cost before painting. This has become the core obstacle to the upgrading of aluminum alloy precision die forging technology.

[0003] Traditional spinning equipment uses a positioning method of "setting the workpiece sheet and fixing the clamping structure", which has poor adaptability to irregularly shaped workpieces such as rectangles. The geometric center of the irregularly shaped workpiece is easily misaligned with the rotation axis of the equipment, which generates strong centrifugal vibration during high-speed spinning. This not only causes the workpiece positioning to continuously shift and the processing posture to be unstable, but also aggravates the wear of core components such as spinning punches and forming wheels, shortening the equipment life. In severe cases, the vibration can cause the workpiece to break or be deformed by extrusion. Moreover, changing the shape requires readjusting the positioning structure, which cannot meet the stability requirements of precision die forging and also restricts the improvement of production efficiency. In view of this, we propose a stamping equipment for processing automotive aluminum alloy parts. Summary of the Invention

[0004] The purpose of this invention is to provide a stamping equipment for processing automotive aluminum alloy parts, so as to solve the technical problems of centrifugal vibration and positioning offset caused by the non-coincidence of the geometric center and the rotation axis during the spinning process of irregular aluminum alloy workpieces.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a stamping equipment for processing automotive aluminum alloy parts, comprising a machine tool, a spinning die, a spinning punch, a rotary forming system, a slide rail, a positioning and adjusting mechanism, and a protective conveying assembly arranged above the machine tool. The positioning and adjusting mechanism includes a movable frame slidably adapted to the surface of the slide rail. A rotating wheel is rotatably arranged inside the movable frame. Several one-way cylinders are hinged to the inner wall of the movable frame. An electronic valve is arranged at the input end of each one-way cylinder. A guide rod is sealed and slidably adapted inside the one-way cylinder. A clamping module is arranged at the end of the guide rod. The movable frame... Several arc-shaped pipes are fixedly connected to one side, and the arc-shaped pipes are connected to the one-way cylinder. Each arc-shaped pipe has a hollow sphere inside, and each hollow sphere has a main flow hole and a secondary flow hole in a symmetrical structure on its surface. Each hollow sphere has a solid sphere inside, which is sealed and rotated, and the main flow hole is connected to the solid sphere. Each solid sphere has a transverse opening on its surface that is connected to the secondary flow hole. An arc-shaped rod is sealed between each adjacent arc-shaped pipe, and an adjusting plate is fitted on the surface of each arc-shaped rod. Each adjusting plate is slidably adapted to a push plate with a pneumatic slider.

[0006] When clamping round or square workpieces, an electronic valve controls the inflation of the one-way cylinder, and the guide rod pushes the clamping module to adaptively clamp, aligning the workpiece center with the axis of the spinning punch. After clamping a rectangular workpiece, the motor drives the rotating wheel to rotate. Because the workpiece center does not coincide with the punch axis, centrifugal force causes the workpiece to move, the one-way cylinder to compress and rotate axially, and the solid sphere to rotate. The air pressure change pushes the arc-shaped rod to adjust the workpiece position. Finally, the push plate makes fine adjustments to make the workpiece center coincide with the center of the rotating wheel, completing the positioning and spinning process. This invention, through the setting of a rotating wheel and one-way cylinder, achieves this. The positioning and adjustment mechanism, which links guide rods, arc-shaped pipes, hollow spheres, solid spheres, and arc-shaped rods, effectively solves the problems of centrifugal vibration, positioning offset, and surface clamping damage caused by the misalignment of the geometric center and the rotation axis of irregularly shaped aluminum alloy workpieces during the spinning process. It realizes adaptive and precise centering and stable clamping of workpieces of different shapes such as rectangles and circles, significantly improving the dimensional consistency, forming accuracy, and surface quality of aluminum alloy precision forgings, and providing a reliable technical guarantee for high-quality precision forging of lightweight aluminum alloy parts for automobiles.

[0007] Preferably, the positioning adjustment mechanism further includes a first motor, which is fixedly connected to the upper surface of the movable frame. The first motor is connected to the rotating wheel via a belt drive, and the belt passes through a vertical hole on the movable frame.

[0008] Preferably, each of the one-way cylinders has a diversion pipe arranged on its side surface, and each of the arc-shaped pipes has a spherical joint sealed inside its inlet end.

[0009] Preferably, the spherical joint is laterally coaxial with the one-way cylinder, and the spherical joint is connected to the diversion pipe through a rigid pipe.

[0010] Preferably, a servo motor is fixedly connected to the surface of each of the arc-shaped pipes, and the output end of the servo motor passes through the hollow sphere and is adapted to the transmission of the solid sphere.

[0011] Preferably, the clamping module includes a housing, which is fixedly connected to the end of the guide rod. The housing has a symmetrical structure with micro motors fixedly connected inside, and linkage modules are movably arranged on both sides of the housing in a symmetrical structure.

[0012] Preferably, each of the linkage modules is hinged to a clamping plate at its end, and a protruding plate is rotatably connected to one side of each clamping plate.

[0013] Preferably, the protective conveying assembly includes an air supply module, which is fixedly connected to one side of the mobile frame. The output end of the air supply module is fixedly connected to a diverter box, and a diverter plate is rotatably fitted to one side of the inner wall of the diverter box.

[0014] Preferably, one side of the diverter plate is sealed and rotatably connected to a plurality of metal tubes in a ring array, and each of the metal tubes has a ball-shaped end connected to a hinged tube.

[0015] Preferably, each of the one-way cylinder input ends is sealed and rotatably connected to an inner sleeve, and the inner sleeve passes through the hinged pipe and is sleeved inside the metal pipe. Each of the inner sleeve ends is fixedly connected to several metal rods in a ring array.

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

[0017] 1. This invention effectively solves the problems of centrifugal vibration, positioning offset, and surface clamping damage caused by the misalignment of the geometric center and the rotation axis during the spinning process of irregularly shaped aluminum alloy workpieces by setting up a positioning and adjustment mechanism that links a rotating wheel, a one-way cylinder, a guide rod, an arc-shaped pipe, a hollow sphere, a solid sphere, and an arc-shaped rod. It achieves adaptive and precise centering and stable clamping of workpieces of different shapes such as rectangles and circles, significantly improving the dimensional consistency, forming accuracy, and surface quality of aluminum alloy precision forgings, and providing a reliable technical guarantee for high-quality precision forging of lightweight aluminum alloy parts for automobiles.

[0018] 2. This invention can adaptively clamp round, square, and rectangular workpieces without changing the fixture. Through a dynamic adjustment mechanism driven by pneumatics and triggered by centrifugal force, combined with servo motor control of the airflow channel and linkage adjustment of the arc rod, it can accurately correct the workpiece eccentricity. Finally, the push plate fine-tunes to make the workpiece center coincide with the axis of the rotating wheel and the punch, ensuring uniform force during spinning and improving the forming accuracy and maximum spinning area.

[0019] 3. The clamping module of this invention is equipped with a rotatable convex plate to avoid surface scratches caused by workpiece displacement; the gas pipeline is guided by a metal rod and the hinged pipe bending design prevents motion interference with the core components when the pipeline is stretched and contracted, reducing equipment vibration loss; the combination of flexible clamping and pipeline adaptive adjustment protects the integrity of the aluminum alloy workpiece and extends the life of the core components of the equipment. Attached Figure Description

[0020] Figure 1 This is a schematic cross-sectional view of the positioning adjustment mechanism of the present invention;

[0021] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 3 This is a three-dimensional structural diagram of the positioning adjustment mechanism of the present invention;

[0023] Figure 4 This is a schematic cross-sectional view of the positioning adjustment mechanism of the present invention;

[0024] Figure 5 This is a schematic diagram of the three-dimensional structure of the mobile frame of the present invention;

[0025] Figure 6 This is a three-dimensional exploded view of the positioning adjustment mechanism of the present invention;

[0026] Figure 7 This is a three-dimensional exploded view of the positioning adjustment mechanism of the present invention, to show the three-dimensional structure of the clamping module;

[0027] Figure 8 This is a cross-sectional schematic diagram of the hollow sphere structure of the present invention, to show the internal structure of the hollow sphere;

[0028] Figure 9 This is a three-dimensional structural diagram of the present invention;

[0029] Figure 10 This is a three-dimensional exploded view of the protective conveying assembly of the present invention;

[0030] Figure 11 This is a schematic diagram of the protective conveying assembly of the present invention in use.

[0031] Figure 12 This is a schematic diagram of the circular and square positioning structures of the present invention in use.

[0032] Figure 13 This is a schematic diagram of the irregular positioning structure of the present invention in use.

[0033] Explanation of the labels in the diagram: 1. Machine tool; 11. Spinning die; 12. Spinning punch; 13. Rotary forming system; 14. Slide rail; 2. Positioning and adjustment mechanism; 21. Moving frame; 22. Rotary wheel; 23. First motor; 24. One-way cylinder; 241. Electronic valve; 242. Diverter pipe; 25. Guide rod; 26. Arc-shaped pipe; 27. Spherical joint; 28. Rigid pipe; 29. ​​Hollowed-out sphere; 291. Main flow hole; 292. Secondary flow. 210. Hole; 210. Solid sphere; 2101. Horizontal opening; 211. Arc rod; 212. Adjusting plate; 213. Push plate; 214. Servo motor; 3. Protective conveying assembly; 31. Air supply module; 32. Diverter box; 33. Diverter plate; 34. Metal pipe; 35. Hinge pipe; 36. Inner sleeve; 37. Metal rod; 4. Clamping module; 41. Housing; 42. Micro motor; 43. Linkage module; 44. Clamping plate; 45. Protruding plate. Detailed Implementation

[0034] like Figures 1-8 and Figures 12-13 As shown, the present invention relates to a stamping equipment for processing automotive aluminum alloy parts, comprising a machine tool 1, a spinning die 11 with a hydraulic system arranged on the left side of the machine tool 1, a spinning punch 12 with a drive system arranged on the right side of the machine tool 1, a rotary forming system 13 arranged on the upper surface of the machine tool 1, a positioning and adjusting mechanism 2 arranged on the upper surface of the machine tool 1, and a protective conveying assembly 3.

[0035] Both sides of the machine tool 1 are fixedly equipped with slide rails 14.

[0036] It is worth noting that the hydraulic system and drive system on the spinning die 11 and the spinning punch 12 are both existing conventional technologies and will not be described in detail here. On the one hand, they are used to drive the spinning die 11 to move so that its shaft can clamp the workpiece; on the other hand, they are used to drive the spinning punch 12 to rotate so that its shaft can apply torque to the workpiece.

[0037] It is worth noting that the rotary forming system 13 consists of a robotic arm, a spinning roller, and a spinning scraper. The robotic arm is a conventional technology used to adjust the path of the spinning roller or the spinning scraper. The spinning roller can form the surface of the workpiece, and the spinning scraper can remove excess material from the surface of the workpiece.

[0038] The positioning adjustment mechanism 2 includes a movable frame 21 with a pneumatic slider. The movable frame 21 is slidably adapted to the surface of the slide rail 14. A rotating wheel 22 with grooves on its inner wall is rotatably connected to the inner wall of the movable frame 21. A first motor 23 is fixedly connected to the upper surface of the movable frame 21, and the first motor 23 and the rotating wheel 22 are adapted to each other via belt drive. The belt passes through a vertical hole on the movable frame 21. Several one-way cylinders 24 are hinged in a circular array on the inner wall of the movable frame 21. An electronic valve 241 is arranged at the input end of each one-way cylinder 24. A diversion pipe 242 is arranged on the side surface of the cylinder 24. A guide rod 25 is fitted inside the one-way cylinder 24 in a sealed sliding configuration. An arc-shaped pipe 26 is fixedly connected in a ring array on one side of the movable frame 21. A spherical connector 27 is sealed at the input end of each arc-shaped pipe 26, and the spherical connector 27 is coaxial with the one-way cylinder 24 laterally. The spherical connector 27 is connected to the diversion pipe 242 via a rigid pipe 28. A hollow sphere 29 is fitted inside each arc-shaped pipe 26. The arc-shaped pipe 26 and the hollow sphere 29 separate a main chamber and a... Two secondary chambers, each with a hollow sphere 29 having a main flow hole 291 on its surface, and a secondary flow hole 292 symmetrically arranged on the surface of each hollow sphere 29, with the secondary flow hole 292 axially perpendicular to the main flow hole 291. Each hollow sphere 29 has a solid sphere 210 sealed and rotatably connected inside, with the main flow hole 291 communicating with the solid sphere 210. Each solid sphere 210 has a transverse opening 2101 on its surface, communicating with the secondary flow hole 292. Each phase... An arc-shaped rod 211 is sealed between two adjacent arc-shaped pipes 26, and the ends of the arc-shaped pipes 26 are sealed inside the secondary chamber. An adjustment plate 212 is sleeved on the surface of each arc-shaped rod 211. A push plate 213 with a pneumatic slider is slidably adapted inside each adjustment plate 212. A servo motor 214 is fixedly connected to the surface of each arc-shaped pipe 26, and the output end of the servo motor 214 passes through the hollow sphere 29 and is adapted to the transmission of the solid sphere 210. A clamping module 4 is fixedly arranged at the end of each guide rod 25.

[0039] It is worth noting that the arc-shaped pipe 26, the hollow sphere 29, the solid sphere 210, and the servo motor 214 constitute a "dynamic air pressure regulation system". The centrifugal force triggers the compression of the one-way cylinder 24, and the servo motor 214 precisely controls the airflow channel, which drives the arc-shaped rod 211 to adjust in linkage. Finally, the push plate 213 makes the center of the workpiece coincide with the axis of the rotating wheel 22 and the spinning punch 12, thus solving the problems of low accuracy and uneven force in traditional manual calibration.

[0040] This invention can adaptively clamp round, square, and rectangular workpieces without changing the fixture. Through a dynamic adjustment mechanism driven by pneumatics and triggered by centrifugal force, combined with the airflow channel controlled by the servo motor 214 and the linkage adjustment of the arc rod 211, the workpiece eccentricity can be accurately corrected. Finally, the push plate 213 makes fine adjustments to make the center of the workpiece coincide with the axis of the rotating wheel 22 and the punch, ensuring uniform force during spinning and improving the forming accuracy and maximum spinning area.

[0041] like Figure 4 and Figures 6-7 As shown, the clamping module 4 includes a housing 41, which is fixedly connected to the end of the guide rod 25. Inside the housing 41, there are micro motors 42 fixedly connected in a symmetrical structure. On both sides of the housing 41, there are linkage modules 43 movably arranged in a symmetrical structure. Each linkage module 43 has a clamping plate 44 hinged to its end. Each clamping plate 44 has a convex plate 45 rotatably connected to one side.

[0042] It is worth noting that the inner wall of the one-way cylinder 24 is provided with a guide groove, and the surface of the guide rod 25 is provided with protrusions. The protrusions slide and fit inside the guide groove, which can realize the guiding movement and prevent rotation.

[0043] It is worth noting that the clamping module 4 is a conventional technology with the addition of a rotatable convex plate 45. When the workpiece moves due to centrifugal force, the convex plate 45 rotates synchronously with the workpiece, changing "hard friction" to "rolling contact" and avoiding surface scratches and scrapping. The rotation characteristics of the convex plate 45 can adapt to the offset of the workpiece clamping surface, avoiding the positioning failure caused by the offset of traditional rigid clamping, reducing the number of reclamping times, improving processing efficiency, and solving the problems of "workpiece damage + easy positioning failure" of traditional clamping.

[0044] Specifically, when clamping round and square workpieces, such as Figure 12 As shown, gas is filled into the one-way cylinder 24 by the electronic valve 241. The gas pushes the guide rod 25 to move towards the workpiece. The clamping module 4 can adaptively move towards the workpiece and complete the clamping operation, thereby aligning the center point of the round and square workpieces with the axis of the spinning punch 12. When spinning a rectangular workpiece, as shown... Figure 13As shown, gas is filled into the one-way cylinder 24 using the electronic valve 241, causing the guide rod 25 to move the clamping module 4 toward the workpiece. The clamping module 4 clamps and fixes the four corners of the workpiece. Then, the first motor 23 is controlled by an external circuit to work. The first motor 23 drives the rotating wheel 22 to rotate via a belt, thereby making the workpiece and the clamping module 4 and other components rotate synchronously. At this time, since the center point of the rectangular workpiece and the axis of the spinning punch 12 do not coincide, the workpiece will move due to centrifugal force during rotation. When the workpiece moves, it will put pressure on the clamping module 4. This pressure will cause the one-way cylinder 24 and the guide rod 25 to be compressed, and the one-way cylinder 24 will rotate axially. At this time, the servo motor 214 drives the solid ball 210 to rotate (the rotation direction of the solid ball 210 is the same as the axial rotation direction of the one-way cylinder 24), so that the transverse port 2101 is connected to one of the secondary flow holes 292, and the one-way cylinder 24 and the guide rod 25 are connected. The air generated by the compression of rod 25 flows into the corresponding secondary chamber through the secondary flow hole 292. The air pressure in the secondary chamber increases, which in turn pushes the arc rod 211 to move, causing part of the arc rod 211 to converge, while the other arc rod 211 moves under the action of centrifugal force. Finally, the adjusting plate 212 on the arc rod 211 corresponds to the straight line position from the center of the rotating wheel 22 to the center point of the workpiece. The air pressure in the secondary chambers at both ends of the arc rod 211 will also change. Subsequently, the servo motor 214 drives the solid ball 210 to rotate in the opposite direction, so that the transverse port 2101 connects with another secondary flow hole 292. This allows the gas in the compressed one-way cylinder 24 to connect with the arc rod 211 with the changing air pressure in the secondary chambers at both ends through the secondary flow hole 292. The air pressure inside the one-way cylinder 24 changes accordingly, which can push or contract the clamping structure, thereby adjusting the center point of the workpiece to the straight line position from the center of the rotating wheel 22 to the center point of the workpiece. Finally, stop the rotation of the rotary wheel 22, and move the push plate 213 within the adjusting plate 212 to further adjust the position of the center point of the workpiece so that it coincides with the center of the rotary wheel 22, thereby achieving precise positioning of the center point of the workpiece and meeting the requirements of the spinning process for the largest area workpiece.

[0045] like Figure 3 and Figures 9-11 As shown, the protective conveying assembly 3 includes an air supply module 31, which is fixedly connected to one side of the mobile frame 21. A diversion box 32 is fixedly connected to the output end of the air supply module 31. A diversion plate 33 is rotatably fitted to the inner wall of one side of the diversion box 32. Several metal pipes 34 are rotatably connected to one side of the diversion plate 33 in a ring array. Each metal pipe 34 has a ball head at its end connected to a hinged pipe 35. Each one-way cylinder 24 has an inner sleeve 36 rotatably connected to its input end. The inner sleeve 36 passes through the hinged pipe 35 and is fitted inside the metal pipe 34. Several metal rods 37 are fixedly connected to the end of each inner sleeve 36 in a ring array.

[0046] It is worth noting that the air supply module 31 is a conventional technology, consisting of air source equipment such as an air compressor, control and regulation components such as regulating valves, and delivery pipelines, used to provide airflow into the one-way cylinder 24.

[0047] It is worth noting that the metal rod 37 is made of metal and has elastic deformation characteristics. Inside the pipe, the metal rod 37 can guide the movement of the inner sleeve 36.

[0048] Specifically, the rotating wheel 22 rotates, and the inner sleeve 36 slides in the sealed metal tube 34. When the inner sleeve 36 and the metal tube 34 are stretched to the extreme point, the metal rod 37 on the metal tube 34 moves into the hinge tube 35, causing the hinge tube 35 and the metal tube 34 to be unrestrained and rotate axially, causing the metal tube 34 and the inner sleeve 36 to bend. This prevents the metal tube 34 and the inner sleeve 36 from being stretched or contracted in a straight line, which would affect the contact between the core of the spinning die 11 and the spinning punch 12 and the center point of the workpiece, and prevent motion interference.

[0049] The clamping module 4 of this invention is equipped with a rotatable protrusion 45 to avoid surface scratches caused by workpiece displacement; the gas pipeline is guided by a metal rod 37 and the hinged pipe 35 is bent to prevent motion interference with the core components when the pipeline is stretched or contracted, thereby reducing equipment vibration loss; the combination of flexible clamping and pipeline adaptive adjustment not only protects the integrity of the aluminum alloy workpiece, but also extends the life of the core components of the equipment.

[0050] Working principle: This embodiment provides a stamping equipment for processing automotive aluminum alloy parts. When clamping and positioning round or square workpieces, the external control system enables the air supply module 31 to work, and the electronic valve 241 controls the filling of gas into the one-way cylinder 24. The gas pushes the guide rod 25 to move towards the workpiece. The clamping module 4 drives the linkage module 43 through the micro motor 42 to close the clamping plate 44, so that the punch 45 can adaptively move towards the workpiece and complete the clamping operation, so that the center point of the round and square workpieces corresponds to the axis of the spinning punch 12.

[0051] During the spinning operation on a rectangular workpiece, gas is filled into the one-way cylinder 24 using the electronic valve 241, causing the guide rod 25 to move the clamping module 4 toward the workpiece. The clamping module 4 clamps and fixes the four corners of the workpiece. Then, the first motor 23 is controlled by an external circuit to work. The first motor 23 drives the rotating wheel 22 to rotate via a belt, thereby causing the workpiece and the clamping module 4 and other components to rotate synchronously. At this time, since the center point of the rectangular workpiece and the axis of the spinning punch 12 do not coincide, the workpiece will be affected by centrifugal force during rotation. When the workpiece moves, it applies pressure to the clamping module 4. This pressure causes compression between the one-way cylinder 24 and the guide rod 25, and simultaneously, the one-way cylinder 24 rotates axially. At this time, the servo motor 214 drives the solid sphere 210 to rotate (the rotation direction of the solid sphere 210 is the same as the axial rotation direction of the one-way cylinder 24), so that the transverse port 2101 connects with one of the secondary flow holes 292. The air generated by the compression of the one-way cylinder 24 and the guide rod 25 flows into the corresponding part through the secondary flow hole 292. The secondary chamber experiences increased air pressure, which in turn pushes the arc-shaped rod 211 to move, causing part of the arc-shaped rod 211 to converge, while the other arc-shaped rod 211 moves under centrifugal force. Ultimately, the adjusting plate 212 on the arc-shaped rod 211 aligns with the straight line position from the center of the rotating wheel 22 to the center point of the workpiece. The air pressure in the secondary chambers at both ends of the arc-shaped rod 211 also changes. The servo motor 214 drives the solid sphere 210 to rotate in the opposite direction, connecting the transverse passage 2101 with another secondary flow hole 292. The compressed gas inside the one-way cylinder 24 is connected to the arc-shaped rod 211, whose pressure changes at both ends, through the secondary flow hole 292. (Under the action of centrifugal force, the adjusting plate 212 on the arc-shaped rod 211 moves when it corresponds to the straight line position from the center of the rotating wheel 22 to the center point of the workpiece, causing the pressure in the secondary chambers at both ends to change.) The pressure inside the one-way cylinder 24 changes accordingly, which in turn pushes or contracts the clamping structure, thereby adjusting the center point of the workpiece to the straight line position from the center of the rotating wheel 22 to the center point of the workpiece. Finally, the rotation of the rotating wheel 22 is stopped, and the push plate 213 moves within the adjusting plate 212 to further adjust the position of the center point of the workpiece, making it coincide with the center of the rotating wheel 22, thus achieving precise positioning of the center point of the workpiece and meeting the requirements of the spinning process for workpieces with the largest area.

[0052] After the gas supply module 31 delivers gas, the rotating wheel 22 drives the one-way cylinder 24 and other components to rotate. The inner sleeve 36 slides inside the metal tube 34. When the inner sleeve 36 and the metal tube 34 are stretched, they correspond to the center position on the rotating wheel 22. At this time, the metal rod 37 at the end of the inner sleeve 36 slides into the hinge tube 35. There are no supporting components between the hinge tube 35 and the metal tube 34. Due to the weight of the connection between the inner sleeve 36 and the metal tube 34, the hinge tube 35 rotates axially at the end of the metal tube 34 and bends, causing the inner sleeve 36 and the metal tube 34 to form a curved line that does not correspond to the center position on the rotating wheel 22. When the inner sleeve 36 and the metal tube 34 are contracted, the elasticity of the metal rod 37 guides it at the ball joint of the hinge tube 35 and the metal tube 34, allowing the inner sleeve 36 to pass smoothly through the hinge tube 35 and enter the interior of the metal tube 34.

[0053] In the spinning process, after positioning is completed, the spinning die 11 is moved by the hydraulic system so that its shaft first contacts the workpiece and then makes close contact with the mold on the shaft of the spinning punch 12 to clamp and fix the workpiece. Then, the external circuit mechanism drives the drive system to rotate the shaft of the spinning punch 12, and the workpiece surface is spun and cut by the robotic arm, spinning wheel and spinning scraper in the rotary forming system 13.

[0054] The embodiments disclosed in this invention are preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of this invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.

Claims

1. A stamping device for processing automobile aluminum alloy parts, comprising a machine tool (1), a spinning concave die (11), a spinning convex die (12), a spinning and profiling system (13), a slide rail (14), a positioning and adjusting mechanism (2) and a protective conveying assembly (3) arranged above the machine tool (1), characterized in that, The positioning adjusting mechanism (2) comprises a moving frame (21) slidingly matched on the surface of a sliding rail (14), a rotating wheel (22) is arranged inside the moving frame (21) and rotates, a plurality of one-way cylinders (24) are hingedly connected to the inner wall of the moving frame (21), an electronic valve (241) is arranged at the input end of each one-way cylinder (24), a guide rod (25) is sealingly and slidingly matched in the one-way cylinder (24), a clamping module (4) is arranged at the end of the guide rod (25), a plurality of arc-shaped pipes (26) are fixedly connected to one side of the moving frame (21) and are communicated with the one-way cylinders (24), a hollow sphere (29) is sleeved in each arc-shaped pipe (26), a main flow-through hole (291) and a secondary flow-through hole (292) are formed in the surface of each hollow sphere (29) in a symmetrical structure, a solid sphere (210) is sealingly and rotatably arranged in each hollow sphere (29) and is communicated with the main flow-through hole (291), a transverse through hole (2101) is formed in the surface of each solid sphere (210) and is communicated with the secondary flow-through hole (292), an arc-shaped rod (211) is sealingly sleeved between each adjacent arc-shaped pipe (26), an adjusting plate (212) is sleeved on the surface of each arc-shaped rod (211), and a push plate (213) with a pneumatic sliding block is slidingly matched in each adjusting plate (212); A shunt pipe (242) is arranged on the side surface of each one-way cylinder (24), and a spherical joint (27) is sealingly sleeved in the input end of each arc-shaped pipe (26); The spherical joint (27) is transversely coaxial with the one-way cylinder (24), and the spherical joint (27) and the shunt pipe (242) are communicated through a hard pipe (28); A servo motor (214) is fixedly connected to the surface of each arc-shaped pipe (26), and the output end of the servo motor (214) is drivingly matched with the solid sphere (210) through the hollow sphere (29); The protection conveying assembly (3) comprises a gas supply module (31), the gas supply module (31) is fixedly connected to one side of the moving frame (21), the output end of the gas supply module (31) is fixedly connected with a shunt box (32), and the shunt box (32) is sealingly and rotatably matched with a shunt plate (33) on one side of the inner wall thereof; The shunt plate (33) is sealingly and rotatably communicated with a plurality of metal pipes (34) in an annular array on one side thereof, and the end of each metal pipe (34) is ball-jointedly communicated with a hinged pipe (35); The input end of each one-way cylinder (24) is sealingly and rotatably communicated with an inner sleeve pipe (36), the inner sleeve pipe (36) is sleeved in the metal pipe (34) through the hinged pipe (35), and a plurality of metal rods (37) are fixedly connected in an annular array to the end of each inner sleeve pipe (36); When clamping circular and square workpieces, the electronic valve (241) controls the inflation of the one-way cylinder (24), the guide rod (25) pushes the clamping module (4) to adaptively clamp, so that the center of the workpiece corresponds to the axis of the spinning punch (12); after clamping the rectangular workpiece, the motor drives the rotating wheel (22) to rotate, because the center of the workpiece does not coincide with the axis of the punch, the centrifugal force causes the workpiece to move, the one-way cylinder (24) to compress and rotate axially, and the solid sphere (210) to rotate, the arc-shaped rod (211) is pushed by the change of air pressure, the position of the workpiece is adjusted, and finally the center of the workpiece coincides with the center of the rotating wheel (22) through the fine adjustment of the push plate (213), the positioning and spinning treatment are completed.

2. The stamping apparatus for processing of automobile aluminum alloy parts as claimed in claim 1 wherein, The positioning adjusting mechanism (2) further comprises a first motor (23), the first motor (23) is fixedly connected to the upper surface of the moving frame (21), the first motor (23) is connected with the rotating wheel (22) through a belt transmission, and the belt passes through the vertical hole on the moving frame (21).

3. The stamping apparatus for processing of an automobile aluminum alloy part according to claim 2, wherein The clamping module (4) comprises a shell (41), the shell (41) is fixedly connected to the end of the guide rod (25), the shell (41) is internally and symmetrically fixedly connected with a micro motor (42), and the shell (41) is symmetrically movably arranged with a linkage module (43) on both sides.

4. The stamping apparatus for processing of automobile aluminum alloy parts as claimed in claim 3 wherein, Each end of the linkage module (43) is hingedly connected with a clamping plate (44), and each clamping plate (44) is rotatably connected with a protruding plate (45) on one side.

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