A special-shaped forging machining clamp and a machining method

Abstract

The application discloses a special-shaped forge piece machining clamp and a machining method, relates to the technical field of a forge piece machining clamp, and comprises a machining table; the clamp further comprises: two moving plates which are slidably connected to the top of the machining table; two clamping mechanisms which are oppositely arranged and are used for stably clamping and fixing the special-shaped forge piece, and the clamping mechanism comprises a U-shaped frame, a mounting plate, a first electric push rod, a clamping seat, a plurality of springs, a plurality of clamping rods, a plurality of first rubber pads and a second electric push rod. The clamp can comprehensively and stably clamp the special-shaped forge piece by the spring pushing the clamping rod to adaptively adhere to the surface of the forge piece and cooperating with the brake assembly to lock, and can avoid the shaking and displacement of the forge piece during machining. The clamp can flexibly adjust the clamping force and prevent the damage of the forge piece. The clamp can also adapt to special-shaped forge pieces with different sizes and materials, the support can eliminate the lateral force, the driving mechanism can ensure synchronization, the worm gear can realize self-locking, and the clamp has high practicability.

Description

Technical Field

[0001] This invention relates to the field of forging fixture technology, and in particular to a fixture and method for processing irregular forgings. Background Technology

[0002] In the field of mechanical manufacturing, forgings are common metal parts. Forging is a process that uses metal materials to undergo plastic deformation, thereby obtaining parts with specific shapes, dimensions, and properties. Among these, irregularly shaped forgings present numerous challenges during processing due to their complex and irregular shapes.

[0003] In existing technologies, traditional processing methods for fixing irregularly shaped forgings typically employ simple fixtures, such as ordinary chucks or simple mechanical clamping devices. These traditional fixtures have significant limitations, making it difficult to adapt to the complex and varied shapes of irregularly shaped forgings. Due to the irregular surface shape of irregularly shaped forgings, traditional fixtures cannot achieve comprehensive and stable clamping, easily leading to problems such as forging wobbling and displacement during processing, resulting in reduced processing accuracy and a lower product qualification rate. Furthermore, the clamping force adjustment of traditional fixtures is not flexible enough, making it difficult to accurately control the clamping force for irregularly shaped forgings of different materials and sizes. Excessive clamping force may damage the surface of the forging, affecting its quality; insufficient clamping force will not effectively fix the forging, also leading to unstable processing. Therefore, this application proposes a fixture and processing method for processing irregularly shaped forgings to solve the above problems. Summary of the Invention

[0004] The purpose of this application is to provide a fixture and method for machining irregularly shaped forgings, to solve the problems mentioned in the background art. Traditional machining methods for fixing irregularly shaped forgings typically use simple fixtures, such as ordinary chucks or simple mechanical clamping devices. These traditional fixtures have significant limitations, making it difficult to adapt to the complex and varied shapes of irregularly shaped forgings. Due to the irregular surface shape of irregularly shaped forgings, traditional fixtures cannot achieve comprehensive and stable clamping, easily leading to problems such as forging wobbling and displacement during machining, resulting in reduced machining accuracy and a lower product yield. Furthermore, the clamping force adjustment of traditional fixtures is not flexible enough; it is difficult to accurately control the clamping force for irregularly shaped forgings of different materials and sizes. Excessive clamping force may damage the surface of the forging, affecting its quality; insufficient clamping force will not effectively fix the forging, also leading to unstable machining.

[0005] To achieve the above objectives, this application provides the following technical solution: a fixture for machining irregularly shaped forgings, including a machining table, and the fixture further includes:

[0006] Two movable plates are provided, and both movable plates are slidably connected to the top of the processing table;

[0007] Two clamping mechanisms are provided, which are arranged opposite to each other. The clamping mechanisms are used to stably clamp and fix irregular forgings. The clamping mechanisms include: a U-shaped frame, a mounting plate, a first electric push rod, a clamping seat, multiple springs, multiple clamping rods, multiple first rubber pads, and a second electric push rod. The bottom of the U-shaped frame is slidably connected to the top of the corresponding moving plate. The bottom of the mounting plate is fixedly installed on the top of the U-shaped frame. The first electric push rod is fixedly installed on the inner wall of the bottom of the U-shaped frame. The output shaft of the first electric push rod passes through the mounting plate and is fixedly installed on the bottom of the clamping seat. One end of each of the multiple springs is fixedly installed on one side of the inner wall of the clamping seat. One end of each of the multiple clamping rods is slidably connected to the inside of the clamping seat. The other end of each spring is fixedly installed on one end of the corresponding clamping rod. The first rubber pad is fixedly installed on the other end of the corresponding clamping rod. A groove is provided on the top of the clamping rod. A second rubber pad is fixedly installed on one side of the inner wall of the groove. The second electric push rod is installed on the top of the moving plate. The output shaft of the second electric push rod is fixedly installed on one side of the clamping seat.

[0008] Two braking assemblies are provided, each mounted on a corresponding clamping seat. The braking assemblies cooperate with the clamping rods and are used to stably fix the clamping rods.

[0009] A drive mechanism is provided to drive two sets of clamping mechanisms to move relative to each other. The drive mechanism is located at the bottom of the processing table and cooperates with two moving plates respectively.

[0010] With the above structure, the moving plate and drive mechanism drive the relative movement of two sets of clamping mechanisms, enabling the clamping seat to be initially aligned according to the overall size of the irregular forging. The multiple clamping rods in the clamping mechanism are independently pushed by their respective springs. In conjunction with the first rubber pad, they can automatically extend and retract according to the concave and convex shape of the irregular forging surface and conform to the contour of different positions, avoiding the problem of local suspension or point contact caused by the irregular shape of traditional clamps. The first electric push rod drives the clamping seat to move up and down, so that the clamping rods can cover different height areas of the forging. The second electric push rod provides lateral clamping force. The braking component locks and fixes the clamping rods after they are self-adapted into position, thereby achieving a comprehensive and stable wrap-around clamping of the irregular forging, effectively preventing the forging from shaking or shifting during processing. At the same time, the buffering effect of multiple independent springs can prevent excessive clamping force from damaging the surface of the forging. The clamping force adjustment is flexible and reliable, and it can adapt to irregular forgings of different materials and sizes without frequent clamping changes.

[0011] Preferably, a placement seat is fixedly installed on the top of the processing table, and an anti-slip pad is fixedly installed on the top of the placement seat. By fixing the placement seat on the top of the processing table and setting the anti-slip pad on its top, a flat and frictional support base is provided for the irregular forging. When the two sets of clamping mechanisms clamp the forging from both sides, the placement seat and the anti-slip pad can effectively bear the weight of the forging and suppress its jumping or displacement in the vertical direction, forming a coordinated positioning effect with the clamping mechanism, which further enhances the positional stability of the forging during the processing. At the same time, the softness of the anti-slip pad can buffer some of the pressure transmitted by the clamping mechanism and reduce hard extrusion damage to the bottom of the irregular forging. It is particularly suitable for irregular forgings with uneven bottoms or protruding structures.

[0012] Preferably, the top of the movable plate has two first sliding grooves, and the bottom of the U-shaped frame has two first sliders fixedly installed. The first sliders are slidably connected in the corresponding first sliding grooves. By having the two first sliding grooves on the top of the movable plate slide in cooperation with the two first sliders on the bottom of the U-shaped frame, the U-shaped frame can be smoothly adjusted in the front and back directions on the movable plate. This structure provides additional horizontal adjustment freedom for the clamping seat. The operator can fine-tune the front and back position of each U-shaped frame according to the specific shape of the irregular forging, so that the distribution of the clamping rods is more in line with the complex curved surface of the forging. This avoids the problem that some clamping rods cannot contact the concave area of ​​the forging due to the clamping mechanism being fixed. At the same time, the sliding cooperation has a small gap and the movement is smooth, ensuring the repeatability of the positioning accuracy during the clamping process.

[0013] Preferably, four stabilizing rods are fixedly installed at the bottom of the clamping seat. The bottom ends of the four stabilizing rods all penetrate the corresponding mounting plates and are slidably connected to the mounting plates. By fixing the four stabilizing rods at the bottom of the clamping seat and having the bottom ends of the four stabilizing rods all penetrate the corresponding mounting plates and are slidably connected to the mounting plates, when the first electric push rod drives the clamping seat to move up and down, the four stabilizing rods slide synchronously in the guide holes of the mounting plates. This effectively limits the deflection or tilt that may occur during the lifting and lowering of the clamping seat, ensuring that the clamping seat always approaches the irregular forging in a horizontal posture. This allows multiple clamping rods to contact the surface of the forging simultaneously and evenly, avoiding the unfavorable situation where some clamping rods contact first while others are suspended due to the clamping seat tilting. This improves the reliability and consistency of adaptive clamping.

[0014] Preferably, a bracket is fixedly installed on the top of the movable plate, and fixed blocks are fixedly installed on the front and rear sides of the second electric push rod. Sliding sleeves are fixedly installed on both fixed blocks, and both sliding sleeves are slidably fitted onto the bracket. By fixing the bracket on the top of the movable plate, the second electric push rod is slidably fitted onto the bracket through the fixed blocks and sliding sleeves. This structure allows the second electric push rod to slide along the bracket when pushing the clamping seat to move laterally, effectively eliminating the misalignment problem caused by the clamping seat's up-and-down movement or front-and-back fine adjustment. It also avoids the second electric push rod bearing additional bending moment or lateral force, ensuring that the lateral thrust can be efficiently and smoothly transmitted to the clamping seat. At the same time, it also extends the service life of the second electric push rod, making the clamping force output more stable and predictable.

[0015] Preferably, the braking assembly includes two connecting blocks, two columns, two first motors, two dual-axis lead screws, four nuts, and two pressure plates. The two connecting blocks are respectively fixedly installed on the front and rear sides of the corresponding clamping seats. One end of each connecting block is fixedly installed on a corresponding column. Two sliding holes are provided on the column. The first motors are fixedly installed on the top of the corresponding columns. The output shaft of the first motors is fixedly installed on the top of the corresponding dual-axis lead screws. The bottom end of the dual-axis lead screws passes through the top of the corresponding columns and is rotatably connected to the bottom inner wall of the corresponding sliding holes. Nuts are slidably sleeved on the corresponding dual-axis lead screws and within the corresponding sliding holes. The front and rear ends of the pressure plates are respectively fixedly installed on the corresponding two nuts that are close to each other. On one side, the two pressure plates, positioned close to each other, engage with the top and bottom of the corresponding clamping rods, respectively. The braking assembly employs a connecting block, column, first motor, dual-axis lead screw, nut, and pressure plate assembly. When multiple clamping rods adaptively conform to the surface of the irregular forging under the action of springs, the first motor drives the dual-axis lead screw to rotate, causing the upper and lower nuts to move towards each other. This drives the two pressure plates to press all the clamping rods from the top and bottom, achieving simultaneous locking of multiple independent clamping rods. This prevents the clamping rods from retracting or shifting due to vibration during processing. This braking method is rapid and provides uniform clamping force, eliminating the need for individual operation of each clamping rod and greatly improving operational efficiency. At the same time, the large-area contact method of the pressure plates avoids damage to the clamping rods caused by localized stress concentration.

[0016] Preferably, a brake plate is fixedly installed on one side of the pressure plate, and one side of the brake plate cooperates with one side of the corresponding clamping rod. By fixing the brake plate on one side of the pressure plate and cooperating with one side of the brake plate with the corresponding clamping rod, while the pressure plate presses the clamping rod from the top and bottom, the brake plate further abuts against the clamping rod from the side, forming a multi-directional limiting constraint on the clamping rod. This effectively prevents the clamping rod from lateral rotation or displacement when subjected to processing vibration. It is especially suitable for cutting force impacts from different directions during the processing of irregular forgings. This structure significantly enhances the locking reliability of the braking assembly, ensuring that each clamping rod remains absolutely stationary after braking, thereby maintaining accurate positioning of the adaptive position.

[0017] Preferably, the drive mechanism includes two limiting rods, two moving rods, two rotating rods, a turntable, a worm gear, a worm, a rotating shaft, two bearing seats, and a second motor. Two limiting holes are provided on the processing table. The top ends of the limiting rods pass through the corresponding limiting holes and are fixedly installed on the bottom of the corresponding moving plates. The bottom ends of the limiting rods are fixedly installed on the tops of the corresponding moving rods. The moving rods are slidably connected to the bottom of the processing table. The ends of the two rotating rods that are far apart are rotatably connected to the bottoms of the two moving rods. The turntable is rotatably connected to the bottom of the processing table. The ends of the two rotating rods that are close together are rotatably connected to the bottom of the turntable. The worm gear is fixedly installed on the bottom of the turntable, and the worm meshes with the worm gear. Both bearing seats are fixedly installed on the bottom of the processing table and are fixedly sleeved on the rotating shaft. The first clamping mechanism is fixedly mounted on the rotating shaft. The second motor is fixedly mounted on the bearing seat on the front side, and the output shaft of the second motor is fixedly mounted on the front end of the rotating shaft. The drive mechanism works in conjunction with the limiting rod, the moving rod, the rotating rod, the turntable, the worm gear, the worm, and the second motor. The second motor drives the worm to rotate and drives the worm gear and the turntable to rotate. The turntable pulls the two moving rods to move in opposite directions or away from each other through the two rotating rods. Then, through the limiting rod, it drives the two moving plates to move synchronously relative to each other. This structure ensures that the two clamping mechanisms always approach or move away from the center of the forging at the same speed, realizing a completely symmetrical clamping action. It avoids the situation where the forging is pushed off course due to one side contacting first. At the same time, the self-locking characteristic of the worm gear and worm can keep the position unchanged after clamping. It can maintain the clamping force without continuous power supply, which is energy-saving and reliable.

[0018] Preferably, two second sliders are fixedly installed on the top of the moving rod, and four second slide grooves are opened at the bottom of the processing table. The second sliders are slidably connected in the corresponding second slide grooves. By fixing two second sliders on the top of the moving rod and opening four second slide grooves at the bottom of the processing table, the second sliders are slidably connected in the corresponding second slide grooves. This ensures that the moving rod is always precisely guided by the second slide grooves when it performs linear reciprocating motion under the drive mechanism. This effectively prevents the moving rod from swaying or getting stuck during movement, and ensures that the motion transmitted from the limiting rod through the limiting hole to the moving plate is purely linear and without lateral components. This ensures that the two clamping mechanisms do not generate additional torsional force when clamping irregular forgings, and improves the overall clamping stability and centering accuracy.

[0019] This invention also proposes a processing method for a fixture for machining irregularly shaped forgings, comprising the following steps:

[0020] S1: First, connect the first electric push rod, the second electric push rod, the first motor and the second motor to an external power source to provide power for the operation of each component;

[0021] S2: Place the irregular forging on the anti-slip pad on the top of the worktable. The anti-slip pad can effectively suppress the jumping of the forging and ensure the stability of the placement.

[0022] S3: Start the first electric push rod, whose output shaft drives the clamping seat to rise and fall. The stabilizing rods at the four corners of the bottom of the clamping seat pass through the mounting plate and slide to it, ensuring that the clamping seat remains horizontal when it rises and falls, so that the clamping rods cover different height areas of the forging and meet the clamping requirements at different height positions.

[0023] S4: By activating the drive mechanism, two moving plates and two clamping mechanisms are driven to approach the forging synchronously. Multiple springs inside the clamping seat are welded to the inner wall of the clamping seat at one end and to the clamping rod at the other end. The springs push the clamping rod to slide inside the clamping seat, adaptively conforming to the surface of the forging. The first rubber pad at the end of the clamping rod that contacts the forging can buffer the pressure and adapt to the concave and convex shape of the forging, realizing the initial positioning of the forging in the horizontal direction. The groove and second rubber pad opened at the top of the clamping rod can adapt to irregular forgings that need to be clamped from the inside to the outside, improving the clamping requirements of different irregular forgings and making it highly adaptable.

[0024] S5: When the clamping rod is in place, start the first motor. Its output shaft drives the double-axis lead screw to rotate. The two nuts on the double-axis lead screw move in the sliding hole of the column, which drives the pressure plate and brake plate to move in opposite directions. The clamping rod is pressed from the top, bottom and side to complete the locking and fixation, ensuring that the forging will not shake or shift during the processing.

[0025] S6: Finally, the second electric push rod is activated, and its output shaft pushes the clamping seat to move laterally. The two clamping mechanisms move relative to each other, realizing stable clamping of the irregular forging, ensuring the stability of the irregular forging during processing, and improving processing accuracy and quality.

[0026] The beneficial effects of this invention are:

[0027] 1. The moving plate and drive mechanism drive the relative movement of two sets of clamping mechanisms, enabling the clamping seat to be initially aligned according to the overall size of the irregular forging. Multiple clamping rods in the clamping mechanism are independently pushed by their respective springs. With the help of the first rubber pad, they can automatically extend and retract according to the concave and convex shape of the irregular forging surface and fit the contour of different positions, avoiding the problem of local suspension or point contact caused by the irregular shape of traditional clamps. The first electric push rod drives the clamping seat to move up and down, so that the clamping rods can cover different height areas of the forging. The second electric push rod provides lateral clamping force. The braking component locks and fixes the clamping rods after they are self-adapted into position, thereby achieving comprehensive and stable wrap-around clamping of the irregular forging, effectively preventing the forging from shaking or shifting during processing. At the same time, the buffering effect of multiple independent springs can prevent excessive clamping force from damaging the surface of the forging. The clamping force adjustment is flexible and reliable, and it can adapt to irregular forgings of different materials and sizes without frequent clamping changes.

[0028] 2. Through the cooperative structure of connecting block, column, first motor, dual-axis lead screw, nut and pressure plate, after multiple clamping rods adaptively fit the surface of the irregular forging under the action of spring, the first motor drives the dual-axis lead screw to rotate, causing the upper and lower nuts to move towards each other, driving the two pressure plates to press all clamping rods from the top and bottom respectively, realizing the simultaneous locking of multiple independent clamping rods, avoiding the clamping rods from retracting or moving due to vibration during processing. This braking method is quick and the clamping force is uniform. There is no need to operate each clamping rod individually, which greatly improves the operating efficiency. At the same time, the large-area contact method of the pressure plate avoids damage to the clamping rods caused by local stress concentration.

[0029] 3. Through the cooperation of the limiting rod, moving rod, rotating rod, turntable, worm gear, worm, and second motor, the second motor drives the worm to rotate and drives the worm gear and turntable to rotate. The turntable pulls the two moving rods to move in opposite directions or back to back through the two rotating rods, and then drives the two moving plates to move synchronously relative to each other through the limiting rod. This structure ensures that the two clamping mechanisms always approach or move away from the center of the forging at the same speed, realizing a completely symmetrical clamping action and avoiding the situation where the forging is pushed off course due to one side contacting first. At the same time, the self-locking characteristic of the worm gear and worm can keep the position unchanged after clamping, and the clamping force can be maintained without continuous power supply, which is energy-saving and reliable.

[0030] This invention uses a spring to push a clamping rod to adaptively fit the surface of the forging, and locks it in place with a braking assembly, which can provide a stable clamping solution and prevent the forging from shaking or shifting during processing. The clamping force can be flexibly adjusted to prevent damage to the forging. It can also adapt to irregularly shaped forgings of different sizes and materials. Furthermore, the bracket eliminates lateral forces, the drive mechanism ensures synchronization, and the worm gear achieves self-locking, making it highly practical. Attached Figure Description

[0031] Figure 1 This is a three-dimensional front view of the structure according to an embodiment of this application;

[0032] Figure 2 This is a three-dimensional structural diagram of the movable plate, U-shaped frame, first slide groove, mounting plate, clamping seat, clamping rod, groove, second electric push rod, sliding sleeve, bracket, connecting block, column, pressure plate and limiting rod of this application embodiment;

[0033] Figure 3 This is a three-dimensional structural view of the U-shaped frame, first slider, mounting plate, first electric push rod, stabilizer, clamping seat, clamping rod, connecting block, column, first motor, nut and pressure plate according to an embodiment of this application.

[0034] Figure 4 This is a three-dimensional structural view of the movable plate, the first slider, the first slide groove, the second electric push rod, the fixed block, the sliding sleeve, and the bracket according to an embodiment of this application.

[0035] Figure 5This is a three-dimensional structural diagram of the clamping seat, clamping rod, first rubber pad, groove, connecting block, column, sliding hole, first motor, dual-axis lead screw, nut, pressure plate and brake plate according to an embodiment of this application;

[0036] Figure 6 This is a three-dimensional structural view of the connecting block, column, sliding hole, first motor, dual-axis lead screw, nut, pressure plate and brake plate in an embodiment of this application;

[0037] Figure 7 This is a three-dimensional structural view of the clamping seat, spring, clamping rod, first rubber pad, groove and second rubber pad according to an embodiment of this application.

[0038] Figure 8 This is a three-dimensional exploded view of the structure of the spring, clamping rod, first rubber pad, groove, and second rubber pad in an embodiment of this application.

[0039] Figure 9 This is a three-dimensional bottom view of the structure according to an embodiment of this application;

[0040] Figure 10 This is a three-dimensional structural diagram of the limiting rod, moving rod, second slider, rotating rod, turntable, and worm gear according to an embodiment of this application.

[0041] In the diagram: 1. Processing table; 2. Placement seat; 3. Anti-slip mat; 4. Moving plate; 5. U-shaped frame; 6. First slider; 7. First slide groove; 8. Mounting plate; 9. First electric push rod; 10. Stabilizing rod; 11. Clamping seat; 12. Spring; 13. Clamping rod; 14. First rubber pad; 15. Groove; 16. Second rubber pad; 17. Second electric push rod; 18. Fixing block; 19. Sliding sleeve; 20. Bracket; 21. Connecting block; 22. Column; 23. Sliding hole; 24. First motor; 25. Double-axis lead screw; 26. Nut; 27. Pressure plate; 28. Brake plate; 29. ​​Limiting rod; 30. Limiting hole; 31. Moving rod; 32. Second slider; 33. Second slide groove; 34. Rotating rod; 35. Turntable; 36. Worm gear; 37. Worm; 38. Rotating shaft; 39. Bearing seat; 40. Second motor. Detailed Implementation

[0042] The present invention will be further explained below with reference to specific embodiments.

[0043] refer to Figures 1-10This embodiment proposes a fixture for processing irregularly shaped forgings. A processing table 1 serves as the base platform, with a placement seat 2 fixedly mounted at its top center. The top of the placement seat 2 is covered with an anti-slip pad 3 made of rubber with anti-slip textures. Two movable plates 4 are symmetrically arranged on both sides of the top of the processing table 1. Each movable plate 4 has two first sliding grooves 7 on its top. Two first sliders 6 are welded to the bottom of a U-shaped frame 5. The first sliders 6 are embedded in the first sliding grooves 7 to form a sliding fit, allowing the U-shaped frame 5 to move back and forth along the movable plates 4.

[0044] A mounting plate 8 is welded to the top of the U-shaped frame 5. A through hole is opened in the center of the mounting plate 8. The first electric push rod 9 is fixedly installed on the inner wall of the bottom of the U-shaped frame 5. Its output shaft passes through the through hole of the mounting plate 8 and is welded to the center of the bottom of the clamping seat 11. A stabilizing rod 10 is welded to each of the four corners of the bottom of the clamping seat 11. The stabilizing rod 10 passes through the mounting plate 8 and is slidably connected to it to ensure that the clamping seat 11 remains horizontal when it is raised and lowered.

[0045] Multiple springs 12 are installed inside the clamping seat 11. One end of each spring 12 is welded to the inner wall of the clamping seat 11, and the other end is welded to a clamping rod 13, which can slide within the clamping seat 11. A first rubber pad 14 is fixed to the end of the clamping rod 13 that contacts the forging. A groove 15 is formed on the top of the clamping rod 13, and a second rubber pad 16 is attached to the inner wall of the groove 15. A bracket 20 is welded to the top of the movable plate 4. A second electric push rod 17 is installed through two fixing blocks 18. A sliding sleeve 19 is welded to the fixing blocks 18, and the sliding sleeve 19 is fitted onto the bracket 20 to form a sliding connection. The output shaft of the second electric push rod 17 is welded to the side of the clamping seat 11 to provide lateral thrust.

[0046] Braking components are installed on the front and rear sides of the clamping seat 11. Each braking component includes two connecting blocks 21, which are welded to the clamping seat 11, and a column 22 is welded to the other end. The column 22 has two sliding holes 23, and a first motor 24 is installed on the top. Its output shaft is connected to the top of a dual-axis lead screw 25, and the bottom of the dual-axis lead screw 25 is rotatably connected to the bottom of the sliding hole 23 through a bearing. Two nuts 26 are fitted on each dual-axis lead screw 25, and the nuts 26 are simultaneously embedded in the sliding hole 23. A pressure plate 27 is welded between the two nuts 26, and a brake plate 28 is welded to the side of the pressure plate 27. When the first motor 24 drives the dual-axis lead screw 25 to rotate, the upper and lower nuts 26 drive the pressure plate 27 and the brake plate 28 to move towards each other, pressing the clamping rod 13 from three directions: top, bottom, and side.

[0047] The drive mechanism is located at the bottom of the machining table 1 and includes two limiting rods 29. The top ends of the limiting rods 29 pass through the limiting holes 30 on the machining table 1 and are welded to the bottom of the moving plate 4. The bottom ends are welded to the moving rods 31. Two second sliders 32 are welded to the top of the moving rods 31. Four second sliding grooves 33 are opened at the bottom of the machining table 1, and the second sliders 32 are embedded in the second sliding grooves 33. The bottom of the two moving rods 31 is connected to the turntable 35 through the rotating rod 34. The bottom of the turntable 35 is welded to the worm gear 36, which meshes with the worm 37. The worm 37 is fixed on the rotating shaft 38. The rotating shaft 38 is mounted on the bottom of the machining table 1 through two bearing seats 39. The second motor 40 is fixed on the front bearing seat 39, and its output shaft is connected to the front end of the rotating shaft 38.

[0048] During operation, the irregularly shaped forging is placed on the anti-slip mat 3. The second motor 40 is started to drive the worm gear 37 to rotate, which in turn drives the turntable 35 to rotate via the worm wheel 36. The turntable 35 pulls the two moving rods 31 to move towards each other via the rotating rod 34, so that the two moving plates 4 move towards the forging synchronously. The position of the U-shaped frame 5 is adjusted back and forth according to the shape of the forging so that the clamping rods 13 are distributed close to the curved surface of the forging. The first electric push rod 9 is started to adjust the height of the clamping seat 11 so that the clamping rods 13 cover different height areas of the forging. The second electric push rod 17 is started to push the clamping seat 11 to move laterally. The spring 12 pushes the clamping rods 13 to adapt to the surface of the forging. The first rubber pad 14 and the second rubber pad 16 buffer the pressure and adapt to the concave and convex shapes. When the clamping rods 13 are in place, the first motor 24 is started to drive the dual-axis lead screw 25 to rotate, so that the pressure plate 27 and the brake plate 28 press the clamping rods 13 together, completing the locking and fixing.

[0049] This structure achieves adaptive fitting by independently driving the clamping rod 13 with spring 12, and locks in place with the braking assembly, fully enclosing irregularly shaped forgings. Anti-slip pads 3 and placement seats 2 suppress forging movement, stabilizing rod 10 ensures the clamping seat 11 is level, and bracket 20 eliminates lateral force from the second electric push rod 17. The drive mechanism ensures synchronous movement on both sides, and the worm gear achieves self-locking. Multiple independent springs 12 buffer the clamping force, preventing damage to the forging surface. It can adapt to irregularly shaped forgings of different sizes and materials without changing the fixture, effectively preventing forging wobbling or displacement during processing.

[0050] This invention also proposes a processing method for a fixture for machining irregularly shaped forgings, comprising the following steps:

[0051] S1: First, connect the first electric push rod 9, the second electric push rod 17, the first motor 24 and the second motor 40 to an external power source to provide power for the operation of each component;

[0052] S2: Place the irregular forging on the anti-slip pad 3 of the top seat 2 of the processing table 1. The anti-slip pad 3 can effectively suppress the jumping of the forging and ensure the stability of the placement.

[0053] S3: Start the first electric push rod 9, whose output shaft pushes the clamping seat 11 to rise and fall. The stabilizing rods 10 at the four corners of the bottom of the clamping seat 11 pass through the mounting plate 8 and are slidably connected to it, ensuring that the clamping seat 11 remains horizontal when it rises and falls, so that the clamping rod 13 covers different height areas of the forging and meets the clamping requirements of different height positions.

[0054] S4: By activating the drive mechanism, two moving plates 4 and two clamping mechanisms are driven to approach the forging synchronously. Multiple springs 12 inside the clamping seat 11 are welded to the inner wall of the clamping seat 11 at one end and to the clamping rod 13 at the other end. The springs 12 push the clamping rod 13 to slide inside the clamping seat 11, adaptively conforming to the surface of the forging. The first rubber pad 14 at the end of the clamping rod 13 that contacts the forging can buffer the pressure and adapt to the concave and convex shape of the forging, realizing the initial positioning of the forging in the horizontal direction. Here, the groove 15 and the second rubber pad 16 opened at the top of the clamping rod 13 can adapt to irregular forgings that need to be clamped from the inside to the outside, improving the clamping requirements of different irregular forgings and having strong adaptability.

[0055] S5: When the clamping rod 13 is in place, the first motor 24 is started. Its output shaft drives the double-axis lead screw 25 to rotate. The two nuts 26 on the double-axis lead screw 25 move in the sliding hole 23 of the column 22, which drives the pressure plate 27 and the brake plate 28 to move in opposite directions, pressing the clamping rod 13 from the top, bottom and side to complete the locking and fixation, ensuring that the forging will not shake or shift during the processing.

[0056] S6: Finally, the second electric push rod 17 is activated, and its output shaft pushes the clamping seat 11 to move laterally. The two clamping mechanisms move relative to each other to achieve stable clamping of the irregular forging, ensuring the stability of the irregular forging during processing and improving processing accuracy and quality.

[0057] It should be noted that the specific models of the first electric actuator 9, the second electric actuator 17, the first motor 24, and the second motor 40 used can be selected by those skilled in the art. Furthermore, the first electric actuator 9, the second electric actuator 17, the first motor 24, and the second motor 40 mentioned above are all prior art, and this solution will not elaborate on them. In addition, the same drive devices in this application are all controlled by the same synchronizer.

[0058] Working Principle: In use, firstly, connect the first electric push rod 9, the second electric push rod 17, the first motor 24, and the second motor 40 to an external power source. Then, place the irregularly shaped forging on the anti-slip pad 3 of the top seat 2 of the processing table 1. The anti-slip pad 3 can suppress the jumping of the forging. Next, start the second motor 40. Its output shaft drives the rotating shaft 38 to rotate. The worm gear 37 on the rotating shaft 38 rotates accordingly. The worm wheel 36 meshing with the worm gear 37 drives the turntable 35 to rotate. The turntable 35 pulls the two moving rods 31 to move towards each other through the rotating rod 34. The second slider 32 at the top of the moving rod 31 slides in the second slide groove 33 at the bottom of the processing table 1. At the same time, the moving rod 31 drives the two moving plates 4 to move towards the forging synchronously through the limiting rod 29. According to the shape of the forging, move the U-shaped frame 5 back and forth. The first slider 6 at the bottom of the U-shaped frame 5 slides in the first slide groove 7 at the top of the moving plate 4, so that the clamping rods 13 are distributed close to the curved surface of the forging. Start the first electric push rod 9, whose output shaft pushes the clamping seat 11 to rise and fall. The stabilizing rods 10 at the four corners of the bottom of the clamping seat 11 pass through the mounting plate 8 and are slidably connected to it, ensuring that the clamping seat 11 remains horizontal when it rises and falls, so that the clamping rod 13 covers different height areas of the forging. The second electric push rod 17 is activated, and its output shaft pushes the clamping seat 11 to move laterally. Multiple springs 12 inside the clamping seat 11 are welded at one end to the inner wall of the clamping seat 11, and clamping rods 13 are welded at the other end. The springs 12 push the clamping rods 13 to slide within the clamping seat 11, adaptively conforming to the surface of the forging. The first rubber pad 14 at the end of the clamping rod 13 contacts the forging and can buffer pressure and adapt to the concave and convex shape of the forging. Here, the groove 15 and the second rubber pad 16 opened at the top of the clamping rod 13 can adapt to irregular forgings that need to be clamped from the inside to the outside, improving the clamping requirements of different irregular forgings and making it highly adaptable. When the clamping rod 13 is in place, the first motor 24 is activated, and its output shaft drives the double-axis lead screw 25 to rotate. The two nuts 26 on the double-axis lead screw 25 move in the sliding hole 23 of the column 22, driving the pressure plate 27 and the brake plate 28 to move towards each other, pressing the clamping rod 13 from the top, bottom and side directions to complete the locking and fixing. At this time, the clamping force is buffered by multiple independent springs 12 to avoid damage to the surface of the forging. It can adapt to irregular forgings of different sizes and materials without changing the clamping force, effectively preventing the forging from shaking or shifting during processing. The bracket 20 can eliminate the lateral force of the second electric push rod 17, the drive mechanism ensures synchronous movement on both sides, and the worm gear achieves self-locking.

[0059] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fixture for machining irregularly shaped forgings, comprising a machining table (1), characterized in that, The fixture also includes: Two movable plates (4) are provided, and both movable plates (4) are slidably connected to the top of the processing table (1); Two clamping mechanisms are provided, which are arranged opposite to each other. The clamping mechanisms are used to stably clamp and fix the irregular forgings. The clamping mechanisms include: a U-shaped frame (5), a mounting plate (8), a first electric push rod (9), a clamping seat (11), multiple springs (12), multiple clamping rods (13), multiple first rubber pads (14), and a second electric push rod (17). The bottom of the U-shaped frame (5) is slidably connected to the top of the corresponding moving plate (4). The bottom of the mounting plate (8) is fixedly installed on the top of the U-shaped frame (5). The first electric push rod (9) is fixedly installed on the inner wall of the bottom of the U-shaped frame (5). The output shaft of the first electric push rod (9) passes through the mounting plate (8) and is fixedly installed. Installed at the bottom of the clamping seat (11), one end of multiple springs (12) is fixedly installed on one side of the inner wall of the clamping seat (11), one end of multiple clamping rods (13) is slidably connected to the inside of the clamping seat (11), the other end of the springs (12) is fixedly installed on one end of the corresponding clamping rod (13), the first rubber pad (14) is fixedly installed on the other end of the corresponding clamping rod (13), the top of the clamping rod (13) is provided with a groove (15), a second rubber pad (16) is fixedly installed on one side of the inner wall of the groove (15), the second electric push rod (17) is installed on the top of the moving plate (4), and the output shaft of the second electric push rod (17) is fixedly installed on one side of the clamping seat (11); Two braking components are provided, and the braking components are set on corresponding clamping seats (11). The braking components cooperate with the clamping rod (13) and are used to stably fix the clamping rod (13). The driving mechanism is used to drive the two sets of clamping mechanisms to move relative to each other. The driving mechanism is set at the bottom of the processing table (1) and cooperates with the two moving plates (4) respectively.

2. The fixture for machining irregularly shaped forgings according to claim 1, characterized in that, The processing table (1) is fixedly equipped with a placement seat (2), and the placement seat (2) is fixedly equipped with an anti-slip pad (3).

3. The fixture for machining irregularly shaped forgings according to claim 1, characterized in that, The top of the movable plate (4) has two first slide grooves (7), and the bottom of the U-shaped frame (5) has two first sliders (6) fixedly installed. The first sliders (6) are slidably connected in the corresponding first slide grooves (7).

4. A jig for machining irregularly shaped forgings according to claim 1, characterized in that, The bottom of the clamping seat (11) is fixedly installed with four stabilizing rods (10), and the bottom ends of the four stabilizing rods (10) all pass through the corresponding mounting plate (8) and are slidably connected to the mounting plate (8).

5. A jig for machining irregularly shaped forgings according to claim 1, characterized in that, The top of the movable plate (4) is fixedly installed with a bracket (20), and the front and rear sides of the second electric push rod (17) are fixedly installed with fixing blocks (18). Sliding sleeves (19) are fixedly installed on both fixing blocks (18), and both sliding sleeves (19) are slidably sleeved on the bracket (20).

6. A fixture for machining irregularly shaped forgings according to claim 1, characterized in that, The braking assembly includes two connecting blocks (21), two columns (22), two first motors (24), two dual-axis lead screws (25), four nuts (26), and two pressure plates (27). The two connecting blocks (21) are respectively fixedly installed on the front and rear sides of the corresponding clamping seats (11). One end of the connecting block (21) is fixedly installed on the corresponding column (22). Two sliding holes (23) are opened on the column (22). The first motor (24) is fixedly installed on the top of the corresponding column (22). The output shaft of the first motor (24) is fixedly installed on the top of the column (22). Installed on the top of the corresponding double-axis lead screw (25), the bottom end of the double-axis lead screw (25) passes through the top of the corresponding column (22) and is rotatably connected to the bottom inner wall of the corresponding sliding hole (23). The nut (26) is slidably sleeved on the corresponding double-axis lead screw (25) and slidably sleeved in the corresponding sliding hole (23). The front end and rear end of the pressure plate (27) are respectively fixedly installed on the side of the corresponding two nuts (26) that are close to each other. The side of the two pressure plates (27) that are close to each other are respectively engaged with the top and bottom of the corresponding clamping rod (13).

7. A jig for machining irregularly shaped forgings according to claim 6, characterized in that, A brake plate (28) is fixedly installed on one side of the pressure plate (27), and one side of the brake plate (28) cooperates with one side of the corresponding clamping rod (13).

8. A fixture for machining irregularly shaped forgings according to claim 1, characterized in that, The drive mechanism includes two limiting rods (29), two moving rods (31), two rotating rods (34), a turntable (35), a worm gear (36), a worm (37), a rotating shaft (38), two bearing seats (39), and a second motor (40). Two limiting holes (30) are provided on the processing table (1). The top end of the limiting rod (29) passes through the corresponding limiting hole (30) and is fixedly installed to the bottom of the corresponding moving plate (4). The bottom end of the limiting rod (29) is fixedly installed on the top of the corresponding moving rod (31). The moving rod (31) is slidably connected to the bottom of the processing table (1). The ends of the two rotating rods (34) that are far apart from each other are rotatably connected to two... The bottom of the moving rod (31) is connected to the bottom of the turntable (35), and the two rotating rods (34) are rotatably connected to the bottom of the turntable (35) at their close ends. The worm gear (36) is fixedly installed at the bottom of the turntable (35), and the worm (37) meshes with the worm gear (36). The two bearing seats (39) are fixedly installed at the bottom of the processing table (1), and the two bearing seats (39) are fixedly sleeved on the rotating shaft (38). The worm (37) is fixedly sleeved on the rotating shaft (38). The second motor (40) is fixedly installed on the bearing seat (39) on the front side, and the output shaft of the second motor (40) is fixedly installed at the front end of the rotating shaft (38).

9. A fixture for machining irregularly shaped forgings according to claim 8, characterized in that, Two second sliders (32) are fixedly installed on the top of the motion rod (31), and four second slide grooves (33) are opened at the bottom of the processing table (1). The second sliders (32) are slidably connected in the corresponding second slide grooves (33).

10. A method for machining irregularly shaped forgings using a machining fixture, characterized in that, Includes the following steps: S1: First, connect the first electric push rod (9), the second electric push rod (17), the first motor (24), and the second motor (40) to the external power supply to provide power for the operation of each component; S2: Place the irregular forging on the anti-slip pad (3) of the top seat (2) of the processing table (1). The anti-slip pad (3) can effectively suppress the jumping of the forging and ensure the stability of the placement. S3: Start the first electric push rod (9), whose output shaft pushes the clamping seat (11) to rise and fall. The stabilizing rods (10) at the four corners of the bottom of the clamping seat (11) pass through the mounting plate (8) and slide to connect with it, ensuring that the clamping seat (11) remains horizontal when it rises and falls, so that the clamping rod (13) covers different height areas of the forging and meets the clamping requirements of different height positions. S4: By starting the drive mechanism, the two moving plates (4) and the two clamping mechanisms move closer to the forging synchronously. Multiple springs (12) inside the clamping seat (11) are welded to the inner wall of the clamping seat (11) at one end and the clamping rod (13) is welded to the other end. The springs (12) push the clamping rod (13) to slide in the clamping seat (11) and adapt to the surface of the forging. The first rubber pad (14) at the end of the clamping rod (13) that contacts the forging can buffer the pressure and adapt to the concave and convex shape of the forging, so as to achieve the initial positioning of the forging in the horizontal direction. Here, the groove (15) and the second rubber pad (16) opened at the top of the clamping rod (13) can adapt to the irregular forgings that need to be clamped from the inside to the outside, improve the clamping requirements of different irregular forgings, and have strong adaptability. S5: When the clamping rod (13) is in place, start the first motor (24), whose output shaft drives the double-axis lead screw (25) to rotate. The two nuts (26) on the double-axis lead screw (25) move in the sliding hole (23) of the column (22), which drives the pressure plate (27) and the brake plate (28) to move towards each other, pressing the clamping rod (13) from the top, bottom and side directions to complete the locking and fixing, ensuring that the forging will not shake or shift during the processing. S6: Finally, start the second electric push rod (17), whose output shaft pushes the clamping seat (11) to move laterally, and the two clamping mechanisms move relative to each other to achieve stable clamping of the irregular forging, ensure the stability of the irregular forging during processing, and improve processing accuracy and quality.

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