Hydraulic forging device for crankshaft workpiece and positioning and cleaning method thereof

Abstract

The present application belongs to the technical field of hydraulic forging equipment, and particularly relates to a hydraulic forging device for crankshaft workpieces and a positioning and cleaning method thereof. The device comprises a hydraulic forging machine, a work platform and a controller, and the work platform is provided with a clamping piece storage mechanism, a positioning and clamping mechanism and a cleaning mechanism. The clamping piece storage mechanism is composed of a circular turntable and a coaxially stacked storage disc, and a plurality of storage holes are uniformly arranged on the storage disc for storing clamping pieces of different specifications. The positioning and clamping mechanism comprises a moving table, a limiting rod and a screw rod, and the moving table is driven by a second servo motor to reciprocate along the limiting rod. The cleaning mechanism comprises a rotatable rotating shaft and a cleaning steel wire wound thereon, and is driven by a fourth hydraulic rod and a third servo motor to realize automatic cleaning of the surface of the work platform. The present application realizes automatic replacement of clamping pieces, accurate positioning of workpieces and automatic cleaning of the workbench, and significantly improves the automation level and efficiency of forging production.

Description

Technical Field

[0001] This invention belongs to the technical field of hydraulic forging equipment, and specifically relates to a hydraulic forging device for crankshaft-type workpieces and its positioning and cleaning method. Background Technology

[0002] Hydraulic forging equipment is a heavy industrial equipment that uses hydrostatic pressure to apply pressure to metal billets, causing them to undergo plastic deformation to obtain forgings with the desired shape and properties. This type of equipment is widely used in the automotive, shipbuilding, and construction machinery industries to produce key load-bearing components such as shafts and discs. Forging is particularly prevalent for complex crankshaft-like workpieces, where it is one of the mainstream manufacturing processes.

[0003] In existing forging production practices, automation technology is increasingly widely used to improve production efficiency and processing accuracy. For example, some automated solutions have emerged for workpiece clamping and positioning. Chinese patent CN219944491U discloses a hydraulic forging device that, by setting up a dual-head motor, hydraulic rod, and clamping blocks, can automatically clamp, move forward and backward, and rotate the workpiece to facilitate multi-angle forging. Similarly, Chinese patent CN103100570B discloses an open crank extrusion device that uses a hydraulic cylinder to drive a horizontal slider and a side die to automatically clamp and demold the crank workpiece. In addition, US patent US3533268A also describes a horizontal forging machine with hydraulic die clamping function, achieving precise control of die clamping force. These technologies have, to some extent, automated workpiece clamping during the forging process, reducing the operational burden on workers. However, existing technologies still have significant shortcomings. First, regarding the flexibility and versatility of workpiece positioning, the clamping mechanisms (such as clamping blocks or side dies) of the aforementioned automated devices are typically designed for specific workpieces or molds, resulting in relatively fixed structures. When forging workpieces of different sizes or shapes, it often requires stopping the machine and performing complex adjustments or even replacing the entire set of fixtures, lacking the ability to quickly change and adapt online, which limits the flexibility of the production line. In actual production, for multi-variety, small-batch tasks, many factories still rely on workers manually using positioning tools to position high-temperature forgings. This is not only labor-intensive and cumbersome, but also exposes workers to close contact with high-temperature forgings, creating a harsh working environment and posing safety hazards. Second, in the auxiliary stages of the forging process, especially in the cleaning of the workbench, the degree of automation is generally low. When forging high-temperature billets, a large amount of oxide scale is generated and detached from their surface. These hard oxide scales are scattered on the work platform, and if not cleaned in time, they will not only affect the placement accuracy and surface quality of subsequent workpieces, but may also be pressed into the surface of the forgings, forming defects. Currently, the cleaning of these oxide scales is usually done manually by workers using tools such as shovels and brooms during forging breaks. This process not only interrupts production continuity and increases auxiliary working hours, but also brings additional burdens and risks to workers. A search revealed that none of the publicly available automated clamping and positioning devices include a technical solution for automatically cleaning oxide scale from the worktable.

[0004] In summary, while existing technologies have made some progress in automating the main forging process, gaps remain in improving the flexibility of positioning systems to adapt to varying workpieces and automating post-forging auxiliary tasks (such as automatic cleaning). Therefore, developing an integrated forging system that can achieve both flexible automatic workpiece positioning and automatic workbench cleaning is of significant practical importance for reducing worker labor intensity, improving production efficiency, and enhancing equipment versatility. Summary of the Invention

[0005] To address the aforementioned problems, the purpose of this invention is to provide a hydraulic forging device for crankshaft-type workpieces and its positioning and cleaning method. This invention significantly improves the automation level and efficiency of forging production through automatic replacement of clamping parts, precise positioning of workpieces, and automatic cleaning of the worktable.

[0006] The technical solution of this invention is as follows: a hydraulic forging device for crankshaft-type workpieces, comprising a hydraulic forging machine and a working platform and a controller disposed at the bottom of the hydraulic forging machine. The working platform is provided with a clamping part storage mechanism, a positioning and clamping mechanism, and a cleaning mechanism. The clamping part storage mechanism includes a circular turntable, which is horizontally disposed on the left and right sides of the working platform. A first servo motor is connected to its central shaft. The first servo motor is fixedly connected to a fixed base. A circular receiving tray is coaxially stacked above the turntable. Multiple circular receiving holes are evenly opened along the circumferential direction on the edge of the receiving tray, and clamping parts of different specifications are disposed in the receiving holes. The positioning and clamping mechanism includes two parallel cylindrical limiting rods and a moving platform. The cylindrical limiting rods are horizontally mounted between the receiving tray and the working platform. The moving platform is symmetrically positioned on both sides. The limiting hole slidably engages with the limiting rod, and the moving platform is slidably fitted onto the two limiting rods; a screw is provided between the two limiting rods, one end of which is connected to a second servo motor, the second servo motor is fixedly connected to a fixed platform, and the other end is threadedly engaged with a threaded hole in the center of the moving platform to drive the moving platform to reciprocate; the cleaning mechanism is fixedly installed on one side edge of the working platform, including a connecting rod, the connecting rod is fixedly connected to a fourth hydraulic rod, the end of the connecting rod is provided with a mounting bracket between the two side walls of the mounting bracket, and a rotating shaft is rotatably provided, the rotating shaft is connected to a third servo motor, and multiple bundles of cleaning steel wires are fixedly wound radially or spirally on the outer circumference of the rotating shaft, and the signal output terminal of the controller is electrically connected to the first servo motor, the second servo motor, the fourth hydraulic rod, and the third servo motor respectively.

[0007] The bottom surface of the storage tray is provided with a positioning hole, and a positioning rod is vertically arranged in the positioning hole. The lower end of the positioning rod is slidably inserted into the corresponding guide hole on the turntable, so that the storage tray is circumferentially fixed to the turntable and can slide relative to the axial direction. A first hydraulic rod is provided on the base below the turntable. The first hydraulic rod passes vertically upward through the center of the turntable and is fixedly connected to the center of the bottom surface of the storage tray, which is used to drive the storage tray to rise and fall. The signal output terminal of the controller is electrically connected to the first hydraulic rod.

[0008] The upper surface of the moving platform is provided with a placement hole, and the inside of the moving platform is provided with a clamping and releasing unit. The clamping and releasing unit includes a U-shaped frame, a third hydraulic rod, and two semi-circular second extrusion rings. The two semi-circular second extrusion rings are symmetrically and rotatably installed on both sides of the inner wall of the placement hole. The U-shaped frame is set with its opening facing upward, and each end of the U-shaped frame is provided with an arc-shaped groove that mates with the outer arc surface of the second extrusion ring. The cylinder of the third hydraulic rod is vertically fixed to the bottom of the moving platform, and its end is fixedly connected to the middle of the crossbeam of the U-shaped frame. It is used to drive the U-shaped frame to rise to squeeze the second extrusion ring to clamp the clamping member. The signal output terminal of the controller is electrically connected to the third hydraulic rod.

[0009] The inner sides of the two arms of the U-shaped frame are in sliding contact with the outer circumferential surface of the second extrusion ring. The radius of curvature of the arc-shaped groove matches the outer circumferential radius of the second extrusion ring. The two semi-circular second extrusion rings are provided with connecting steel wire ropes at both ends of their inner sides, which are used to pull the second extrusion rings back to their original position when the U-shaped frame descends.

[0010] A bent baffle is provided above the fixed platform.

[0011] The movable platform is also equipped with a second hydraulic rod and a first annular compression ring. The cylinder of the second hydraulic rod is fixed inside the movable platform, and its piston rod end is fixedly connected to the outer edge of the first compression ring. The first compression ring is coaxially sleeved around the placement hole, and the inner diameter of the first compression ring is smaller than the diameter of the placement hole. The first compression ring is composed of two half-rings hinged together. There are two second hydraulic rods, which are fixedly connected to the outer sides of the two half-rings respectively.

[0012] The outer diameter of the storage tray is smaller than the outer diameter of the turntable, and there is a gap between the bottom surface of the storage tray and the top surface of the turntable. The length of the positioning rod is greater than the height of this gap.

[0013] The number of placement holes is two, symmetrically opened on both sides of the upper surface of the moving platform, and the line connecting the centers of the two placement holes is perpendicular to the moving direction of the moving platform.

[0014] The clamping component includes a fixed handle and a fixing member. The fixing member is an arc-shaped block structure or a V-shaped block structure, with its concave working surface facing the center of the working platform.

[0015] A method for positioning and cleaning a hydraulic forging device for crankshaft-type workpieces, employing the hydraulic forging device for crankshaft-type workpieces as described above, includes the following steps: S1: Rotation and alignment: The controller controls the first servo motor to drive the turntable to rotate. The turntable drives the storage tray to rotate synchronously through the positioning rod, so that the storage hole where the target clamping part is located is rotated to a position directly above the placement hole of the moving stage. S2: Handover and insertion steps: The controller controls the first hydraulic rod to retract, driving the storage tray to descend vertically along the positioning rod, so that the lower end of the fixing handle of the target clamping part is inserted into the placement hole of the moving table; S3: Clamping and locking: The controller controls the extension of the third hydraulic rod, driving the U-shaped frame to rise vertically. The arc-shaped grooves at both ends of the U-shaped frame squeeze the two second compression rings to rotate relative to each other, so that the second compression rings grip the outer wall of the fixed handle. S4: Release handover: The controller controls the second hydraulic rod to retract, driving the first compression ring to loosen the fixing handle; S5: Positioning and movement: The controller controls the second servo motor to rotate forward, driving the screw to rotate, so that the moving table moves horizontally along the limit rod towards the working platform until the fixed part clamps and positions the workpiece; S6: Forging: A hydraulic forging machine is used to forge and press workpieces; S7: Cleaning: After forging is completed, the controller controls the fourth hydraulic rod to reciprocate and extend, driving the mounting bracket and rotating shaft to move horizontally back and forth above the work platform. At the same time, it controls the third servo motor to drive the rotating shaft to rotate, so that the cleaning wires can rotate and brush the surface of the work platform. S8: Reset: The controller reverses the movement of each component, sending the clamping part to the recycling tray and waiting for the next cycle. The technical advantages of this invention are as follows: 1. Through the coordinated rotation and lifting of the turntable and the storage tray, this invention can automatically select and install clamping parts of different specifications according to forging requirements, eliminating the need for manual shutdown to change clamps. This design significantly improves the adaptability of the equipment to multi-variety, small-batch production tasks, reduces changeover time, and enhances the flexibility of the production line. 2. Driven by a servo motor, the moving platform of this invention moves smoothly along the limit rod. Combined with the synergistic effect of the dual clamping units (first and second extrusion rings), it reliably clamps and releases the fixing handle of the clamping parts. This structure ensures the positioning accuracy and clamping stability of the workpiece during forging, effectively preventing displacement or loosening, thereby improving the forming quality of the forgings. 3. The cleaning mechanism of this invention adopts a design combining a rotating wire brush and reciprocating motion, which can automatically clean the oxide scale and other debris on the surface of the work platform after forging. This function avoids the safety risks and wasted time associated with manual cleaning, maintains the cleanliness of the working surface, creates favorable conditions for the next step, and reduces the labor intensity of workers. 4. The controller of this invention provides centralized control over all actuators (servo motors, hydraulic rods), enabling fully automated operation from selection, handover, positioning, forging to cleaning and resetting of the clamping parts. The close integration of each step reduces auxiliary time and improves production cycle time and overall efficiency.

[0016] The following will provide further explanation in conjunction with the accompanying drawings. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the overall structure of a hydraulic forging device for crankshaft-type workpieces according to the present invention.

[0018] Figure 2 This is an exploded structural diagram of a hydraulic forging device for crankshaft-type workpieces according to the present invention.

[0019] Figure 3 This is one of the schematic diagrams of the partial explosion structure of the present invention.

[0020] Figure 4 This is the second schematic diagram of the partial explosion structure of the present invention.

[0021] Figure 5 This is the third schematic diagram of the partial explosion structure of the present invention.

[0022] Figure 6 This is a partial cross-sectional view of the present invention.

[0023] Reference numerals: 1-Hydraulic forging machine; 2-Working platform; 3-Collection tray; 4-Collection hole; 5-Moving table; 6-Placement hole; 7-Clamping component; 71-Fixing handle; 72-Fixing component; 8-Controller; 9-Cleaning mechanism; 91-Connecting rod; 92-Fourth hydraulic rod; 93-Mounting bracket; 94-Rotating shaft; 95-Cleaning wire; 96-Third servo motor; 10-Fixing seat; 11-First servo motor; 12-Turntable; 13-Positioning hole; 14-Positioning rod; 15-First hydraulic rod; 16-Second hydraulic rod; 17-First extrusion ring; 18-Extrusion switch; 19-Fixing table; 20-Limiting rod; 21-Limiting hole; 22-Screw; 23-Second servo motor; 24-Second extrusion ring; 25-Third hydraulic rod; 26-U-shaped frame; 27-Connecting wire rope; 28-Bending baffle. Detailed Implementation Example 1

[0024] like Figures 1-6As shown, a hydraulic forging device for crankshaft-type workpieces includes a hydraulic forging machine 1, a working platform 2 and a controller 8 disposed at the bottom of the hydraulic forging machine 1. The working platform 2 is provided with a clamping part storage mechanism, a positioning and clamping mechanism and a cleaning mechanism 9. The clamping part storage mechanism includes a circular turntable 12, which is horizontally disposed on the left and right sides of the working platform 2. A first servo motor 11 is connected to its central axis. The first servo motor 11 is fixedly connected to a fixed base 10. A circular storage tray 3 is coaxially stacked above the turntable 12. Multiple circular storage holes 4 are evenly opened along the circumferential direction on the edge of the storage tray 3. Clamping parts 7 of different specifications are disposed in the storage holes 4. The positioning and clamping mechanism includes two parallel cylindrical limiting rods 20 and a moving platform 5. The cylindrical limiting rods 20 are horizontally mounted between the storage tray 3 and the working platform 2. The moving platform 5 has symmetrical limiting rods on both sides that slide with the limiting rods 20. Hole 21, the moving platform 5 is slidably fitted onto the two limiting rods 20; a screw 22 is provided between the two limiting rods 20, one end of the screw 22 is connected to a second servo motor 23, the second servo motor 23 is fixedly connected to a fixed platform 19, and the other end is threaded into a threaded hole in the center of the moving platform 5, used to drive the moving platform 5 to reciprocate; the cleaning mechanism 9 is fixedly installed on one side edge of the working platform 2, including a connecting rod 91, the connecting rod 91 is fixedly connected to a fourth hydraulic rod 92, the end of the connecting rod 91 is provided with a mounting bracket 93, and a rotating shaft 94 is rotatably provided between the two side walls of the mounting bracket 93, the rotating shaft 94 is connected to a third servo motor 96, and multiple bundles of cleaning steel wires 95 are fixedly wound radially or spirally on the outer circumference of the rotating shaft 94; the signal output terminal of the controller 8 is electrically connected to the first servo motor 11, the second servo motor 23, the fourth hydraulic rod 92, and the third servo motor 96 respectively.

[0025] In use, the controller 8 activates the first servo motor 11 according to a preset program, driving the turntable 12 to rotate, aligning the corresponding clamping parts 7 on the storage tray 3 with the placement holes 6 on the moving platform 5. Subsequently, the moving platform 5, driven by the second servo motor 23 and the screw 22, moves along the limit rod 20 to the clamping position. During forging, the cleaning mechanism 9 is in standby mode; after forging, the controller 8 activates the fourth hydraulic rod 92 and the third servo motor 96, driving the cleaning wire 95 to rotate and brush the surface of the work platform 2, removing scale and other debris. This process is highly automated, reducing manual intervention and improving operational continuity and safety. Example 2

[0026] Based on Embodiment 1, in this embodiment, preferably, the bottom surface of the storage tray 3 is provided with a positioning hole 13, and a positioning rod 14 is vertically arranged in the positioning hole 13. The lower end of the positioning rod 14 is slidably inserted into the corresponding guide hole on the turntable 12, so that the storage tray 3 and the turntable 12 are circumferentially fixed and can slide relative to each other axially. A first hydraulic rod 15 is provided on the base below the turntable 12. The first hydraulic rod 15 passes vertically upward through the center of the turntable 12 and is fixedly connected to the center of the bottom surface of the storage tray 3, for driving the storage tray 3 to rise and fall. The signal output terminal of the controller 8 is electrically connected to the first hydraulic rod 15.

[0027] In use, the controller 8 controls the extension and retraction of the first hydraulic rod 15, driving the storage tray 3 to rise and fall along the positioning rod 14. When the storage tray 3 descends, the fixing handle 71 of the clamping member 7 inserts into the placement hole 6 of the moving table 5; when it rises, it disengages, realizing automatic handover of the clamping member. This lifting structure ensures smooth transfer of the clamping member between different workstations, avoiding collisions or jamming, and improving handover accuracy and reliability. Example 3

[0028] Based on Embodiment 1, in this embodiment, preferably, the upper surface of the moving platform 5 is provided with a placement hole 6, and the moving platform 5 is provided with a clamping and releasing unit. The clamping and releasing unit includes a U-shaped frame 26, a third hydraulic rod 25, and two semi-circular second compression rings 24. The two semi-circular second compression rings 24 are symmetrically and rotatably installed on both sides of the inner wall of the placement hole 6. The U-shaped frame 26 is set with its opening facing upward, and its two ends are respectively provided with arc-shaped grooves that cooperate with the outer arc surface of the second compression rings 24. The cylinder of the third hydraulic rod 25 is vertically fixed to the bottom of the moving platform 5, and its end is fixedly connected to the middle of the crossbeam of the U-shaped frame 26 for driving the U-shaped frame 26 to rise to squeeze the second compression rings 24 to clamp the clamping member 7. The signal output terminal of the controller 8 is electrically connected to the third hydraulic rod 25.

[0029] When this invention is used, after the fixing handle 71 of the clamping member 7 is inserted into the placement hole 6, the controller 8 activates the third hydraulic rod 25, pushing the U-shaped frame 26 upward. The arc-shaped grooves at both ends of the U-shaped frame 26 compress the two semi-circular second compression rings 24, causing them to rotate relative to each other and clamp the fixing handle 71. This clamping method has a compact structure, rapid response, and can adapt to fixing handles of different diameters, enhancing the stability and versatility of clamping. Example 4

[0030] Based on Embodiment 1, in this embodiment, preferably, the inner sides of the two arms of the U-shaped frame 26 are in sliding contact with the outer circumferential surface of the second extrusion ring 24, the radius of curvature of the arc-shaped groove matches the outer circumferential radius of the second extrusion ring 24, and the two semi-circular second extrusion rings 24 are provided with connecting steel wire ropes 27 at both ends of their inner sides for pulling the second extrusion rings 24 back to their original position when the U-shaped frame 26 descends.

[0031] When the U-shaped frame 26 is lowered, the connecting steel wire rope 27 pulls the second compression ring 24 to reset, causing it to automatically open for easier clamping next time. This reset mechanism requires no additional power source, has a simple and reliable structure, reduces maintenance needs, and improves the reusability of the clamping unit. Example 5

[0032] Based on Embodiment 1, in this embodiment, preferably, a bent baffle 28 is provided above the fixed platform 19.

[0033] When this invention is used, the bending baffle 28 is set above the fixed platform 19 to effectively block the oxide scale or coolant splashed during the forging process, preventing it from entering the screw 22, guide rail and other moving parts, thus extending the service life of the equipment and protecting the safety of the operators. Example 6

[0034] Based on Embodiment 1, in this embodiment, preferably, the movable platform 5 is further provided with a second hydraulic rod 16 and an annular first extrusion ring 17. The cylinder of the second hydraulic rod 16 is fixed inside the movable platform 5, and the end of its piston rod is fixedly connected to the outer edge of the first extrusion ring 17. The first extrusion ring 17 is coaxially sleeved around the placement hole 6, and the inner diameter of the first extrusion ring 17 is smaller than the diameter of the placement hole 6. The first extrusion ring 17 is composed of two half-rings hinged together. There are two second hydraulic rods 16, which are fixedly connected to the outer sides of the two half-rings respectively.

[0035] In use, the controller 8 controls the extension and retraction of the second hydraulic rod 16, driving the two semi-rings of the first compression ring 17 to move relative to each other, thereby clamping or releasing the clamping member 7. This structure can work in conjunction with the second compression ring 24 to form a double clamping guarantee, or it can independently complete the clamping task when the second compression ring 24 is not in use, thus improving the redundancy and adaptability of the system. Example 7

[0036] Based on Embodiment 1, in this embodiment, preferably, the outer diameter of the storage tray 3 is smaller than the outer diameter of the turntable 12, and a gap is left between the bottom surface of the storage tray 3 and the top surface of the turntable 12, and the length of the positioning rod 14 is greater than the height of the gap.

[0037] In this invention, the outer diameter of the storage tray 3 is smaller than that of the turntable 12, and a gap is left between the bottom and top surfaces of the two. The length of the positioning rod 14 is greater than the height of this gap. This design ensures that the storage tray 3 does not interfere with the turntable 12 during lifting and lowering, and the positioning rod 14 always remains within the guide hole, resulting in smooth lifting and lowering movement and accurate positioning. Example 8

[0038] Based on Embodiment 1, in this embodiment, preferably, there are two placement holes 6, which are symmetrically opened on both sides of the upper surface of the moving platform 5, and the line connecting the centers of the two placement holes 6 is perpendicular to the moving direction of the moving platform 5.

[0039] In use, the movable stage 5 has two placement holes 6, which can simultaneously install two clamping parts 7. It is suitable for clamping long shaft workpieces or positioning two workpieces at the same time, improving production efficiency, and is especially suitable for the processing needs of dual-station forging or symmetrical workpieces. Example 9

[0040] Based on Embodiment 1, in this embodiment, preferably, the clamping member 7 includes a fixing handle 71 and a fixing member 72, wherein the fixing member 72 is an arc-shaped block structure or a V-shaped block structure, and its concave working surface faces the center direction of the working platform 2.

[0041] In use, the clamping member 72 of the present invention is designed as an arc-shaped or V-shaped structure, with its concave working surface facing the center of the working platform 2. This shape can better fit the outer contour of crankshaft-type workpieces, provide stable positioning support, reduce clamping deformation, and is suitable for flexible clamping of workpieces of various specifications.

[0042] The working principle of this invention is as follows: Several clamping parts 7 are placed inside the storage holes 4 on the outer ring of the storage tray 3. Fixing handles 71 are inserted into the storage holes 4. The sizes and shapes of the fixing parts 72 on the clamping parts 7 are different, achieving clamping and fixing of forged parts of different sizes and shapes. The forged parts are placed on the work platform 2. The second servo motor 23 is powered on by the touch screen display in the control controller 8. The output end of the second servo motor 23 drives the screw 22 to rotate. Through the threaded connection between the screw 22 and the middle of the moving platform 5, the moving platform 5 moves along the trajectory of the two limit rods 20, controlling the moving platform 5 to approach the storage tray 3. Then, the first hydraulic rod 15 and the first servo motor 11 are powered on by the control controller 8. The operation of the first servo motor 11 controls the rotation of the turntable 12. The positioning rod 14 restricts the storage tray 3 and the turntable 12, causing the storage tray 3 to rotate synchronously. The clamping component 7 is moved to the top of the moving platform 5. The operation of the first hydraulic rod 15 will drive the storage tray 3 to descend, which will move the fixing handle 71 on the clamping component 7 above the moving platform 5 into the placement hole 6. Then, the operation of the third hydraulic rod 25 will drive the U-shaped frame 26 to rise. The grooves at both ends of the U-shaped frame 26 will press the outer side of the second extrusion ring 24, thereby driving the second extrusion ring 24 to rotate. The two second extrusion rings 24 will press and fix the fixing handle 71 on the clamping component 7, realizing the connection between the clamping component 7 and the moving platform 5. Then, the operation of the second hydraulic rod 16 will drive the first extrusion ring 17 to rise, canceling the extrusion of the first extrusion ring 17 on the fixing handle 71. Then, by controlling the moving platform 5 to move in the opposite direction along the trajectory of the two limit rods 20, the two clamping components 7 can be controlled to position the forging parts on the working platform 2. There is no need for manual tools to position the forging parts, reducing the labor intensity of workers. After the hydraulic forging machine 1 completes the forging of the parts, the control moving table 5 moves closer to the receiving tray 3, inserts the fixing handle 71 on the clamping part 7 into the receiving hole 4, and then the operation of the third hydraulic rod 25 drives the U-shaped frame 26 to descend. The grooves at both ends of the U-shaped frame 26 will release the pressure on the outer side of the second compression ring 24, and the second compression ring 24 will rotate due to the pulling of the connecting wire rope 27, thus releasing the pressure and fixation of the two second compression rings 24 on the fixing handle 71 on the clamping part 7. Then, the operation of the second hydraulic rod 16 drives the first compression ring 17 to descend, and the first compression ring 17 will press and fix the fixing handle 71. The operation of 15 will cause the storage tray 3 to rise, eliminating the interference between the clamping part 7 on the storage tray 3 and the moving platform 5. Then, the clamping part 7 can be selected through the touch screen display screen in the control controller 8. The operation of the first servo motor 11 will control the rotation of the turntable 12, thereby causing the storage tray 3 to rotate synchronously, and controlling the required clamping part 7 to move above the moving platform 5. The operation of the first hydraulic rod 15 will cause the storage tray 3 to fall, which will move the fixing handle 71 on the clamping part 7 above the moving platform 5 into the placement hole 6. In the same way as above, the clamping part 7 can be replaced, which is applicable to the clamping and fixing of parts of different sizes and shapes. After the parts are forged by the hydraulic forging machine 1, the forged parts are removed from the work platform 2. The fourth hydraulic rod 92 and the third servo motor 96 are powered on by the touch screen display screen in the control controller 8. The third servo motor 96 drives the rotating shaft 94 to rotate, and the fourth hydraulic rod 92 drives the rotating shaft 94 on the mounting bracket 93 to move. As the rotating shaft 94 moves and rotates, the cleaning wire 95 on the rotating shaft 94 will clean the oxide layer that has fallen off on the work platform 2. There is no need for workers to use tools to clean the oxide layer on the work platform 2, which is convenient to operate. Example 10

[0043] A method for positioning and cleaning a hydraulic forging device for crankshaft-type workpieces, employing the hydraulic forging device for crankshaft-type workpieces as described above, includes the following steps: S1: Rotation and alignment: The controller 8 controls the first servo motor 11 to drive the turntable 12 to rotate. The turntable 12 drives the storage tray 3 to rotate synchronously through the positioning rod 14, so that the storage hole 4 where the target clamping part 7 is located rotates to a position directly above the placement hole 6 of the moving table 5. S2: Handover and insertion steps: The controller 8 controls the first hydraulic rod 15 to retract, driving the storage tray 3 to descend vertically along the positioning rod 14, so that the lower end of the fixing handle 71 of the target clamping part 7 is inserted into the placement hole 6 of the moving table 5. S3: Clamping and locking: The controller 8 controls the third hydraulic rod 25 to extend, driving the U-shaped frame 26 to rise vertically. The arc-shaped grooves at both ends of the U-shaped frame 26 squeeze the two second compression rings 24 to rotate relative to each other, so that the second compression rings 24 grip the outer wall of the fixed handle 71. S4: Release handover: Controller 8 controls the second hydraulic rod 16 to retract, driving the first compression ring 17 to loosen the fixing handle 71; S5: Positioning and moving: The controller 8 controls the second servo motor 23 to rotate forward, driving the screw 22 to rotate, so that the moving table 5 moves horizontally along the limit rod 20 towards the working platform 2 until the fixing part 72 clamps and positions the workpiece. S6: Forging: Hydraulic forging machine 1 performs forging processing on the workpiece; S7: Cleaning: After forging is completed, the controller 8 controls the fourth hydraulic rod 92 to reciprocate and extend, driving the mounting bracket 93 and the rotating shaft 94 to move horizontally and reciprocally above the work platform 2. At the same time, the controller 8 controls the third servo motor 96 to drive the rotating shaft 94 to rotate, so that the cleaning wire 95 can rotate and brush the surface of the work platform 2. S8: Reset: Controller 8 controls the reverse action of each component, sending the clamping part 7 to the recycling tray 3 and waiting for the next cycle.

[0044] When used, this invention automates the entire process from automatic clamping component replacement, workpiece positioning, forging, to workbench cleaning through the complete steps S1 to S8. Each step is coordinated and executed by controller 8, reducing manual intervention, improving production cycle time and operational safety, and is particularly suitable for multi-variety, small-batch crankshaft forging tasks.

[0045] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A hydraulic forging device for crankshaft-type workpieces, characterized in that: The system includes a hydraulic forging machine (1), a working platform (2) and a controller (8) located at the bottom of the hydraulic forging machine (1). The working platform (2) is equipped with a clamping storage mechanism, a positioning clamping mechanism and a cleaning mechanism (9). The clamping storage mechanism includes a circular turntable (12), which is horizontally arranged on the left and right sides of the working platform (2). A first servo motor (11) is connected to its central axis. The first servo motor (11) is fixedly connected to a fixed base (10). The turntable (12) is positioned directly above the base. A circular storage tray (3) is stacked on the shaft. Multiple circular storage holes (4) are evenly distributed around the edge of the storage tray (3). Clamping components (7) of different specifications are provided within the storage holes (4). The positioning and clamping mechanism includes two parallel cylindrical limiting rods (20) and a moving platform (5). The cylindrical limiting rods (20) are horizontally positioned between the storage tray (3) and the working platform (2). The moving platform (5) has symmetrically distributed limiting holes (21) on both sides that slide in cooperation with the limiting rods (20). The moving platform (5) can... The sliding sleeve is mounted on the two limiting rods (20); a screw (22) is provided between the two limiting rods (20), one end of the screw (22) is connected to a second servo motor (23), the second servo motor (23) is fixedly connected to a fixed platform (19), and the other end is threaded into the threaded hole in the center of the moving platform (5) to drive the moving platform (5) to reciprocate; the cleaning mechanism (9) is fixedly installed on one side edge of the working platform (2), including a connecting rod (91), the connecting rod (91) is fixedly connected to a fourth The hydraulic rod (92) has a mounting bracket (93) at the end of the connecting rod (91). A rotating shaft (94) is rotatably provided between the two side walls of the mounting bracket (93). The rotating shaft (94) is connected to a third servo motor (96). Multiple bundles of clean steel wires (95) are fixedly wound radially or spirally on the outer circumference of the rotating shaft (94). The signal output terminal of the controller (8) is electrically connected to the first servo motor (11), the second servo motor (23), the fourth hydraulic rod (92), and the third servo motor (96).

2. The hydraulic forging device for crankshaft-type workpieces according to claim 1, characterized in that, The bottom surface of the storage tray (3) is provided with a positioning hole (13), and a positioning rod (14) is vertically arranged in the positioning hole (13). The lower end of the positioning rod (14) is slidably inserted into the corresponding guide hole on the turntable (12), so that the storage tray (3) and the turntable (12) are circumferentially fixed and can slide relative to each other axially. A first hydraulic rod (15) is provided on the base below the turntable (12). The first hydraulic rod (15) passes vertically upward through the center of the turntable (12) and is fixedly connected to the center of the bottom surface of the storage tray (3) for driving the storage tray (3) to rise and fall. The signal output terminal of the controller (8) is electrically connected to the first hydraulic rod (15).

3. The hydraulic forging device for crankshaft-type workpieces according to claim 1, characterized in that, The upper surface of the moving platform (5) is provided with a placement hole (6). The moving platform (5) is provided with a clamping release unit. The clamping release unit includes a U-shaped frame (26), a third hydraulic rod (25), and two semi-circular second extrusion rings (24). The two semi-circular second extrusion rings (24) are symmetrically and rotatably installed on both sides of the inner wall of the placement hole (6). The U-shaped frame (26) is set with its opening facing upward. The two ends of the U-shaped frame (26) are respectively provided with arc-shaped grooves that cooperate with the outer arc surface of the second extrusion ring (24). The cylinder of the third hydraulic rod (25) is vertically fixed to the bottom of the moving platform (5). Its end is fixedly connected to the middle of the crossbeam of the U-shaped frame (26) for driving the U-shaped frame (26) to rise to squeeze the second extrusion ring (24) to clamp the clamping member (7). The signal output end of the controller (8) is electrically connected to the third hydraulic rod (25).

4. The hydraulic forging device for crankshaft-type workpieces according to claim 3, characterized in that, The inner sides of the two arms of the U-shaped frame (26) are in sliding contact with the outer circumference of the second extrusion ring (24). The radius of curvature of the arc groove matches the outer circumference of the second extrusion ring (24). The two semi-circular second extrusion rings (24) are provided with connecting steel wire ropes (27) at both ends of their inner sides, which are used to pull the second extrusion rings (24) back to their original position when the U-shaped frame (26) descends.

5. The hydraulic forging device for crankshaft-type workpieces according to claim 1, characterized in that, A bent baffle (28) is provided above the fixed platform (19).

6. The hydraulic forging apparatus for crankshaft-type workpieces according to claim 1, characterized in that, The movable platform (5) is also provided with a second hydraulic rod (16) and a first annular compression ring (17). The cylinder of the second hydraulic rod (16) is fixed inside the movable platform (5), and its piston rod end is fixedly connected to the outer edge of the first compression ring (17). The first compression ring (17) is coaxially sleeved on the periphery of the placement hole (6), and the inner diameter of the first compression ring (17) is smaller than the diameter of the placement hole (6). The first compression ring (17) is composed of two half-rings hinged together. There are two second hydraulic rods (16), which are fixedly connected to the outer sides of the two half-rings respectively.

7. The hydraulic forging device for crankshaft-type workpieces according to claim 1, characterized in that, The outer diameter of the storage tray (3) is smaller than the outer diameter of the turntable (12), and there is a gap between the bottom surface of the storage tray (3) and the top surface of the turntable (12), and the length of the positioning rod (14) is greater than the height of the gap.

8. The hydraulic forging apparatus for crankshaft-type workpieces according to claim 1, characterized in that, The number of placement holes (6) is two, which are symmetrically opened on both sides of the upper surface of the moving platform (5). The line connecting the centers of the two placement holes (6) is perpendicular to the moving direction of the moving platform (5).

9. A hydraulic forging apparatus for crankshaft-type workpieces according to claim 1, characterized in that, The clamping member (7) includes a fixed handle (71) and a fixing member (72). The fixing member (72) is an arc-shaped block structure or a V-shaped block structure, and its concave working surface faces the center direction of the working platform (2).

10. A method for positioning and cleaning a hydraulic forging device for crankshaft-type workpieces, comprising the hydraulic forging device for crankshaft-type workpieces as described in claim 1, characterized in that... Includes the following steps: S1: Rotation Alignment: The controller (8) controls the first servo motor (11) to drive the turntable (12) to rotate. The turntable (12) drives the storage tray (3) to rotate synchronously through the positioning rod (14), so that the storage hole (4) where the target clamp (7) is located rotates to a position directly above the placement hole (6) of the moving stage (5). S2: Handover and insertion steps: The controller (8) controls the first hydraulic rod (15) to retract, driving the storage tray (3) to descend vertically along the positioning rod (14), so that the lower end of the fixing handle (71) of the target clamp (7) is inserted into the placement hole (6) of the moving table (5); S3: Clamping and locking: The controller (8) controls the third hydraulic rod (25) to extend, driving the U-shaped frame (26) to rise vertically. The arc-shaped grooves at both ends of the U-shaped frame (26) squeeze the two second compression rings (24) to rotate relative to each other, so that the second compression rings (24) hug the outer wall of the fixed handle (71). S4: Release handover: The controller (8) controls the second hydraulic rod (16) to retract, driving the first compression ring (17) to loosen the fixing handle (71). S5: Positioning and moving: The controller (8) controls the second servo motor (23) to rotate forward, driving the screw (22) to rotate, so that the moving table (5) moves horizontally along the limit rod (20) towards the working platform (2) until the fixing part (72) clamps and positions the workpiece; S6: Forging: Hydraulic forging machine (1) forging workpieces; S7: Cleaning: After forging is completed, the controller (8) controls the fourth hydraulic rod (92) to reciprocate and extend, driving the mounting bracket (93) and the rotating shaft (94) to move horizontally and reciprocally above the work platform (2), while controlling the third servo motor (96) to drive the rotating shaft (94) to rotate, so that the cleaning wire (95) can rotate and brush the surface of the work platform (2); S8: Reset: The controller (8) controls the reverse action of each component, sends the clamp (7) to the recycling tray (3) and waits for the next cycle.

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