Multifunctional clamping device for rudder shaft machining

Abstract

The invention discloses a multifunctional clamping device for rudder shaft machining, and relates to the field of machining equipment. The device comprises a fixed bottom plate, a rotating plate, a center clamping mechanism, a center adjusting mechanism, a linkage telescopic mechanism and the like, an accurate adjusting and stable clamping structure is adopted, and the problems of unstable clamping, inaccurate centering, inconvenient adjustment and the like in the rudder shaft machining process in the prior art are solved. The angle of the rudder shaft is accurately adjusted through the cooperation of the fixing bolt and the rotating plate; the center clamping mechanism is locked and fixed through an upper arc seat and a lower arc seat, so that stable clamping of the rudder shaft is ensured; the center adjusting mechanism achieves accurate adjustment of the position of the rudder shaft through cooperation of an adjusting screw rod and a lifting block. The linkage telescopic mechanism ensures uniform distribution and stability of force in the clamping process through meshing of a rotary gear sleeve and a movable arc tooth; and meanwhile, the adjusting screw rod and the telescopic rod are matched with each other, and the ball design is combined, so that the friction force is reduced, and the clamping smoothness and reliability are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of rudder shaft processing, and particularly to a multi-functional clamping device for rudder shaft processing. Background Art

[0002] As a core component in the ship control system, the rudder shaft has extremely high precision requirements. Therefore, during the processing process, precise positioning and clamping operations need to be carried out on it to ensure the processing quality. However, there are still certain technical problems in the adaptability, clamping stability, and operation convenience of the existing rudder shaft processing clamping devices.

[0003] Traditional rudder shaft clamping devices usually adopt a single clamping method, with limited fixing methods and adjustment functions, and it is difficult to meet the processing requirements of different angles and positions of the rudder shaft. In the prior art, many clamping devices rely on manual adjustment and cannot quickly and precisely adjust the clamping force and clamping angle, resulting in difficult precision control during the processing process. In addition, when some traditional clamping devices support the rudder shaft, they cannot effectively maintain its stability, which may cause the deviation of the rudder shaft during the processing process and affect the processing quality.

[0004] In the prior art, although some clamping devices have certain adjustment functions, they usually require multiple manual operation steps, and there may be error accumulation during the adjustment process, reducing the stability and processing precision of the device. Moreover, the existing clamping devices lack convenience and safety when loading the rudder shaft, and do not fully consider the different mechanical requirements of the rudder shaft during processing for the clamping device, resulting in uneven or insecure clamping, increasing the risk during processing. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a multi-functional clamping device for rudder shaft processing, which can provide a clamping device suitable for various processing requirements of the rudder shaft, improve the precision and safety during the processing process, and meet the needs of modern shipbuilding for high-precision and high-efficiency processing equipment.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: A multi-functional clamping device for rudder shaft processing, including a fixed bottom plate. A fixing bolt is provided at the center of the upper surface of the fixed bottom plate, and a rotating plate is installed on the surface of the fixing bolt. The rotating plate is used to adjust the angle of the rudder shaft; The inside of the fixing bolt is hollow and there are notch grooves on both sides. A stud is vertically rotatably installed at the center of the inside of the fixing bolt. A lifting clamping plate is screwed on the surface of the stud. Both sides of the lifting clamping plate penetrate through the notch grooves. A control square head is provided at the top of the stud. Symmetric positioning ports are opened on both sides of the central hole on the surface of the rotating plate. The end of the lifting clamping plate is adapted to the internal dimension of the positioning port; A center clamping mechanism is slidably mounted on the upper surface of the rotating plate, and the center clamping mechanism clamps the rudder shaft in a centering manner. A center adjustment mechanism is mounted on the upper part of the center clamping mechanism. Furthermore, the central clamping mechanism includes a movable seat sliding on the surface of the rotating plate, a lower arc seat is fixed on the upper surface of the movable seat, an upper arc seat is hinged on one side of the top of the lower arc seat, and the side of the upper arc seat away from its rotation axis is fixed to the lower arc seat by a spiral locking rod.

[0007] Furthermore, a fixed boss is symmetrically arranged on the outer side of the lower arc seat, an arc-shaped slide groove A is opened inside the lower arc seat, a mounting hole is opened at the intersection of the fixed boss and the arc-shaped slide groove A, a sliding hole is opened vertically on the upper part of the upper arc seat, and the sliding hole and the two fixed bosses are distributed in degrees.

[0008] Furthermore, the central adjustment mechanism includes an adjusting screw that is vertically screwed through, a control handwheel is provided on the top of the adjusting screw, the control handwheel is placed above the upper arc seat, two limit plates are provided on the surface of the adjusting screw, a lifting block is rotatably installed on the surface of the adjusting screw, the lifting block is placed between the two limit plates, and the lifting block slides inside the sliding hole.

[0009] Furthermore, an arc-shaped slide groove B is symmetrically opened inside the upper arc seat, and the arc-shaped slide groove B corresponds to the arc-shaped slide groove A. Connecting rods are hinged at the bottom of both sides of the lifting block, and an extruded arc bar is slidably installed inside the arc-shaped slide groove B. The end of the connecting rod facing away from the lifting block is hinged at the end of the extruded arc bar.

[0010] Furthermore, movable arc teeth are symmetrically slidably installed inside the arc-shaped slide groove A, baffles are symmetrically arranged at both ends of the movable arc teeth, and an arc spring is placed below the inside of the arc-shaped slide groove A, and both ends of the arc spring are respectively in contact with the surface of the baffle.

[0011] Furthermore, a linkage telescopic mechanism is installed inside the two fixed bosses, and the linkage telescopic mechanism includes a rotating gear sleeve rotating inside the mounting hole, the rotating gear sleeve is meshed with the movable arc teeth, and the inner wall of the rotating gear sleeve is provided with a spiral groove.

[0012] Furthermore, a telescopic rod passes through the interior of the rotating gear sleeve, the telescopic rod passes through the inner arc surface of the lower arc seat, and a spiral convex strip that is adapted to the spiral groove is provided on the surface of the telescopic rod.

[0013] Furthermore, balls are installed on the adjusting screw and the ends of the two telescopic rods that are close to each other.

[0014] Further, track grooves are symmetrically formed on both sides of the rotating plate. A distance-adjusting screw rod is rotatably installed at the center of the upper surface of the rotating plate. A knob is provided at the end of the distance-adjusting screw rod, and the knob is placed at the outer end of the rotating plate. Both sides of the moving seat slide inside the track grooves of the positioning ports, and the bottom of the moving seat is screwed onto the distance-adjusting screw rod.

[0015] The present invention provides a multi-functional clamping device for processing a rudder shaft. It has the following beneficial effects: Firstly, the present invention adopts the structural design of a fixed bottom plate and a rotating plate. Through the cooperation of the fixing bolts and the rotating plate, the angle of the rudder shaft can be conveniently adjusted to meet different processing requirements. Traditional devices may cause inaccurate angles when clamping the rudder shaft, resulting in processing errors. However, through the precise cooperation of the stud and the lifting clamping plate in the present invention, the position and angle can be accurately adjusted during the clamping process, ensuring the precise clamping and stability of the rudder shaft during the processing.

[0016] Secondly, the central clamping mechanism adopts a combined structure of a sliding seat, a lower arc seat, and an upper arc seat, which can achieve centering clamping of the rudder shaft. Traditional devices may have problems such as unstable clamping and inaccurate centering. By using a spiral locking rod to fix the upper and lower arc seats and at the same time cooperating with the precise adjustment of the position of the rudder shaft by the lifting clamping plate, the problems of unstable clamping and centering error in the traditional technology can be effectively solved, ensuring the stability and accuracy of the rudder shaft during the processing.

[0017] In the central adjustment mechanism, through the cooperation of the adjustment screw rod and the lifting block, the precise adjustment of the support position of the rudder shaft can be achieved. In the prior art, it is difficult for the adjustment mechanism to accurately control the clamping position, which may lead to unstable position of the rudder shaft during the processing. Through the design of the limiting plate in the present invention, over-adjustment of the lifting block is prevented, ensuring the consistency of the adjustment accuracy. In addition, the precise sliding of the lifting block ensures stable clamping of the rudder shaft during the processing, thus avoiding the problem of unstable support that may occur in traditional devices.

[0018] Regarding the design of the movable arc teeth and the arc-shaped spring, in the present invention, through the cooperation of the arc-shaped chutes A and B, precise clamping force distribution is achieved. The arc-shaped spring provides a uniform clamping force, avoiding processing errors caused by uneven clamping force in the traditional technology. The baffles provided on both sides of the movable arc teeth further strengthen the stability of the clamping force, preventing the rudder shaft from shifting during the processing.

[0019] In the design of the linkage telescopic mechanism, through the meshing of the rotating tooth sleeve and the movable arc teeth, precise adjustment during the clamping process is ensured. In the prior art, the telescopic mechanism may have problems such as unsmooth or inaccurate movement. However, in the present invention, through the cooperation of the spiral groove and the spiral rib, the axial precise movement of the telescopic rod during the adjustment is ensured, thereby improving the stability and reliability during the clamping process.

[0020] The interaction between the adjusting screw and the telescopic rod of the present invention, combined with the design of the ball, effectively reduces the friction force, ensures the smooth movement of each component during the adjustment process, and avoids the problem of jamming caused by excessive friction in traditional devices. This design not only improves the service life of the device but also enhances the operational convenience during the processing.

[0021] Finally, the cooperation between the rotating plate and the distance-adjusting screw enables the moving seat to slide freely on the surface of the rotating plate, thereby adjusting the support position of the rudder shaft. This design solves the problems of inconvenient position adjustment and uneven support in traditional devices, enabling the rudder shaft to maintain accurate positioning during the processing and ensuring the processing accuracy.

[0022] In summary, through innovative structural design and precise adjustment mechanism, the present invention solves the problems of unstable clamping, inaccurate centering, and inconvenient adjustment existing in the prior art, significantly improving the processing accuracy, clamping stability, and operational convenience during the processing of the rudder shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a three-dimensional structural installation schematic diagram of the present invention; Figure 2 is a three-dimensional schematic diagram of the present invention in the optional state; Figure 3 is of the present invention Figure 2 enlarged structural schematic diagram of Area A; Figure 4 is a three-dimensional structural schematic diagram of the present invention in the central clamping open state; Figure 5 is a sectional structural schematic diagram of the central clamping mechanism of the present invention; Figure 6 is of the present invention Figure 5 front view structural schematic diagram; Figure 7 is a sectional structural schematic diagram of the lower arc seat of the present invention; Figure 8 is a schematic diagram of the central adjustment mechanism of the present invention; Figure 9 is a schematic diagram of the linkage telescopic mechanism of the present invention; Figure 10 is a three-dimensional structural schematic diagram of the movable arc teeth of the present invention.

[0024] Wherein: 1. Fixed bottom plate; 11. Fixed bolt; 12. Notch groove; 13. Stud; 14. Lifting clamping plate; 15. Control square head; 2. Rotating plate; 21. Positioning port; 22. Track groove; 23. Distance adjusting screw; 24. Knob; 3. Central clamping mechanism; 31. Moving seat; 32. Lower arc seat; 321. Fixed boss; 322. Arc-shaped sliding groove A; 323. Mounting hole; 33. Upper arc seat; 331. Sliding hole; 332. Arc-shaped sliding groove B; 34. Spiral locking rod; 4. Central adjusting mechanism; 41. Adjusting screw; 42. Control handwheel; 43. Limiting plate; 44. Lifting block; 45. Connecting rod; 46. Extrusion arc bar; 5. Arc-shaped spring; 6. Movable arc teeth; 61. Baffle; 7. Linkage telescopic mechanism; 71. Telescopic rod; 72. Spiral rib; 73. Rotating tooth sleeve; 74. Spiral groove; 8. Ball. Specific implementation mode

[0025] The technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] Embodiment 1: Refer to Figure 1-10 , a multifunctional clamping device for ship rudder shaft processing, including a fixed bottom plate 1. A fixed bolt 11 is arranged at the center of the upper surface of the fixed bottom plate 1. A rotating plate 2 is installed on the surface of the fixed bolt 11, and the rotating plate 2 is used to adjust the angle of the ship rudder shaft; the inside of the fixed bolt 11 is hollow and notch grooves 12 are opened on both sides. A stud 13 is vertically rotatably installed at the center of the inside of the fixed bolt 11. A lifting clamping plate 14 is screwed on the surface of the stud 13. Both sides of the lifting clamping plate 14 penetrate through the notch grooves 12. A control square head 15 is arranged at the top of the stud 13. Positioning ports 21 are symmetrically opened on both sides of the central hole on the surface of the rotating plate 2. The end of the lifting clamping plate 14 is adapted to the internal dimension of the positioning port 21; by rotating the control square head 15, the stud 13 will drive the lifting clamping plate 14 to move up and down along the notch grooves 12 to realize the fixation and adjustment of different processing ends of the ship rudder shaft. The precise adjustment of the lifting clamping plate 14 in cooperation with the positioning port 21 ensures the stability and accuracy when the ship rudder shaft is clamped, avoiding the problems of uneven clamping and unstable clamping in the traditional device, thereby improving the processing accuracy and safety in the processing process.

[0027] A central clamping mechanism 3 is slidably mounted on the upper surface of the rotating plate 2, and the central clamping mechanism 3 clamps the rudder shaft in a centering manner to ensure that the rudder shaft always maintains a stable position during the processing. A central adjustment mechanism 4 is installed above the inner part of the central clamping mechanism 3, which is used to accurately adjust the support position and angle of the rudder shaft during the processing. By combining the adjustment screw 23 with the pitch adjustment screw 24, the position of the central clamping mechanism 3 can be freely adjusted according to the processing needs, which maximizes the flexibility and adaptability of the rudder shaft clamping process. This design fully solves the technical problems of inconvenient position adjustment and unstable support of the rudder shaft processing device in the prior art.

[0028] See also Figure 4-7 The central clamping mechanism 3 includes a moving seat 31 sliding on the surface of the rotating plate 2, a lower arc seat 32 is fixed on the upper surface of the moving seat 31, an upper arc seat 33 is hinged on one side of the top of the lower arc seat 32, and the side of the upper arc seat 33 away from its rotation axis is fixed to the lower arc seat 32 through a spiral locking rod 34. This design realizes the stable clamping of the rudder shaft, and through the application of the spiral locking rod 34, the upper arc seat 33 and the lower arc seat 32 can be effectively fixed together to prevent loosening or displacement during the clamping process. The fixed upper arc seat 33 and the lower arc seat 32 can provide strong support during the processing operation, ensure the stability of the rudder shaft, and thus avoid the problems of loose clamping and uneven support in the prior art.

[0029] See also Figure 4-7 The lower arc seat 32 is symmetrically provided with a fixed boss 321 on the outside, an arc-shaped slide groove A322 is provided inside the lower arc seat 32, a mounting hole 323 is provided at the intersection of the fixed boss 321 and the arc-shaped slide groove A322, and a sliding hole 331 is vertically provided above the upper arc seat 33, and the sliding hole 331 and the two fixed bosses 321 are distributed at 120 degrees. The setting of the fixed boss 321 ensures the stability of the lower arc seat 32, and provides a guarantee for the smooth sliding of the arc-shaped slide groove A322, avoiding the problems of jamming and excessive resistance during the sliding process in the prior art; the mounting hole 323 provides a precise mounting position for the subsequent linkage telescopic mechanism 7, further improving the stability and reliability of the clamping device.

[0030] See also Figure 7-8The central adjustment mechanism 4 includes an adjustment screw 41 that is vertically screwed and penetrates. A control hand wheel 42 is arranged on the top of the adjustment screw 41. The control hand wheel 42 is placed above the upper arc seat 33. Two limit plates 43 are arranged on the surface of the adjustment screw 41. A lifting block 44 is rotatably installed on the surface of the adjustment screw 41. The lifting block 44 is placed between the two limit plates 43. The lifting block 44 slides inside the slide hole 331. The cooperation between the adjustment screw 41 and the lifting block 44 realizes the precise adjustment of the support position of the rudder shaft. The design of the limit plate 43 ensures that the lifting block 44 does not overshoot during the adjustment process, and maintains the consistency of the adjustment accuracy. The combined design of the adjustment screw 41 and the control hand wheel 42 enables the user to complete the operation conveniently, while avoiding the errors that may occur during the manual adjustment process.

[0031] See also Figure 5-8 The upper arc seat 33 has symmetrically opened arc grooves B332 inside, which correspond to the arc grooves A322. The bottoms of both sides of the lifting block 44 are hinged with connecting rods 45. The extrusion arc strip 46 is slidably installed inside the arc grooves B332. The end of the connecting rod 45 away from the lifting block 44 is hinged at the end of the extrusion arc strip 46. The design realizes the control of the extrusion arc strip 46 through the adjustment of the lifting block 44, so that the extrusion arc strip 46 can slide smoothly inside the arc grooves A322 and the arc grooves B332, and transmits the motion to the movable arc teeth 6 through the connecting rods 45, accurately controls the position of the movable arc teeth 6, and ensures the accuracy and stability during the clamping process.

[0032] See also Figure 4-8 The movable arc teeth 6 are symmetrically slidably installed inside the arc groove A322, and baffles 61 are symmetrically arranged at both ends of the movable arc teeth 6. An arc spring 5 is placed below the arc groove A322, and both ends of the arc spring 5 are respectively in contact with the surface of the baffle 61. The sliding of the movable arc teeth 6 and the action of the baffle 61 ensure the precise clamping of the rudder shaft, and the arc spring 5 ensures the stability of the clamping force by providing uniform pressure, thereby avoiding the processing error caused by uneven or unstable clamping force in the traditional technology.

[0033] See also Figure 7-10 The two fixed bosses 321 are internally mounted with a linkage telescopic mechanism 7, which includes a rotating gear sleeve 73 rotating inside the mounting hole 323, the rotating gear sleeve 73 meshing with the movable arc teeth 6, and the inner wall of the rotating gear sleeve 73 is provided with a spiral groove 74. The spiral groove 74 cooperates with the spiral convex strip 72, so that the linkage telescopic mechanism 7 can move precisely and synchronously during adjustment, ensuring the stable clamping of the rudder shaft.

[0034] See also Figure 6 and Figure 9, a telescopic rod 71 passes through the inside of the rotating gear sleeve 73. The telescopic rod 71 passes through the inner arc surface of the lower arc seat 32. A spiral rib 72 adapted to the spiral groove 74 is provided on the surface of the telescopic rod 71. The cooperation between the telescopic rod 71 and the spiral groove 74 effectively controls the axial movement of the telescopic rod 71, ensuring precise adjustment during the clamping process and avoiding the problems of inaccurate or unstable telescopic mechanisms in traditional devices.

[0035] Refer to Figure 8-9 , at one end where the adjusting screw rod 41 and the two telescopic rods 71 approach each other, a ball 8 is installed. The ball 8 can reduce friction, ensuring that the telescopic rod 71 can move smoothly during the adjustment process and avoiding problems such as jamming or unsmooth movement caused by friction in traditional technologies.

[0036] Refer to Figure 1-2 , symmetrically arranged track grooves 22 are provided on both sides of the rotating plate 2. A distance-adjusting screw rod 23 is rotatably installed at the center of the upper surface of the rotating plate 2. A knob 24 is provided at the end of the distance-adjusting screw rod 23. The knob 24 is placed at the outer end of the rotating plate 2. Both sides of the moving seat 31 slide inside the track grooves 22 of the positioning ports 21. The bottom of the moving seat 31 is screwed onto the distance-adjusting screw rod 23. Through the coordinated work of the track grooves 22 and the distance-adjusting screw rod 23, the moving seat 31 can freely slide on the surface of the rotating plate 2, ensuring that the rudder shaft can always maintain precise positioning during the machining process and avoiding the problem of reduced machining accuracy caused by position deviation in the existing technology.

[0037] Example 2: Clamping effect of precise angle and position adjustment Content of the example: In this example, the device realizes precise adjustment of the angle of the rudder shaft during the machining process through the cooperation of the fixed bottom plate 1 and the rotating plate 2. The interaction between the fixing bolts 11 and the rotating plate 2, combined with the adjustment of the stud 13 and the lifting clamping plate 14, can adjust the angle of the rudder shaft without affecting the clamping stability to meet different machining requirements.

[0038] Experimental setup: Material selection: Conventional rudder shaft materials are used. The shaft body material is alloy steel with a hardness of approximately HRC 45.

[0039] Test environment: The test is carried out under standard temperature and humidity (temperature: Humidity: 60%).

[0040] Controlled variables: The accuracy of angle adjustment and the clamping force. The material of the fixed bottom plate 1 is steel with a thickness of 10 mm.

[0041] Experimental data:

[0042] Comparative test: Comparative Experiment 1: For the traditional clamping device of the rudder shaft, the angle adjustment accuracy is ±0.1°, and the machining accuracy is 50 μm.

[0043] Comparative Experiment 2: For the clamping device of the present invention, the angle adjustment accuracy is 0.05°, and the machining accuracy is 20 μm.

[0044] Experimental conclusion: The device of the present invention improves the angle adjustment accuracy and machining accuracy compared with the traditional device, and can effectively improve the stability and accuracy in the machining of the rudder shaft.

[0045] Example 3: Centering clamping effect Content of the example: In this example, the central clamping mechanism 3 realizes the centering clamping of the rudder shaft through the combination of the sliding seat 31, the lower arc seat 32 and the upper arc seat 33, and locks the lower arc seat and the upper arc seat through the screw locking rod 34 to ensure stable clamping force. The lifting clamping plate 14 cooperates with the adjustment of the control square head 15 to further improve the clamping accuracy and stability.

[0046] Experimental setup: Material selection: The rudder shaft is made of H13 tool steel with a hardness of about HRC 50.

[0047] Test environment: Temperature Humidity 60%.

[0048] Controlled variables: Clamping force and position adjustment range.

[0049] Experimental data:

[0050] Comparative test: Comparative Experiment 1: The centering accuracy of the traditional clamping device is 10 μm, the clamping stability is 7 μm, and the machining accuracy is 40 μm.

[0051] Comparative Experiment 2: The centering accuracy of the device of the present invention is 4 μm, the clamping stability is 3 μm, and the machining accuracy is 12 μm.

[0052] Experimental conclusion: The device of the present invention provides higher centering accuracy and stability, and significantly improves the machining accuracy of the rudder shaft.

[0053] Example 4: Central adjustment accuracy Content of the example: In this example, through the cooperation of the adjusting screw 41 and the lifting block 44, the support position of the rudder shaft can be accurately adjusted. The sliding of the lifting block 44 in the sliding hole 331 ensures stable clamping during the machining of the rudder shaft.

[0054] Experimental setup: Material selection: The material of the rudder shaft is alloy steel, HRC 45.

[0055] Test environment: Temperature: 25°C, Humidity: 60%.

[0056] Controlled variables: Adjustment precision of the adjusting screw and sliding precision of the lifting block.

[0057] Experimental data:

[0058] Comparative test: Comparative test 1: The adjustment precision of the traditional adjustment device is ±0.05 mm, the machining stability is 8 μm, and the locking torque is 5 Nm.

[0059] Comparative test 2: The adjustment precision of the device of the present invention is 0.02 mm, the machining stability is 5 μm, and the locking torque is 3.5 Nm.

[0060] Experimental conclusion: The present invention provides a more precise adjustment mechanism, improving the stability and precision of the rudder shaft machining.

[0061] Example 5: Clamping effect of the movable arc teeth Example content: In this example, through the combined design of the arc-shaped chutes A322 and B332, the movable arc teeth 6 and the arc-shaped spring 5, the clamping force and the positioning of the rudder shaft are precisely adjusted to ensure the stability during the clamping process.

[0062] Experimental setup: Material selection: The movable arc teeth are made of cemented carbide, and the arc-shaped spring is made of high-elastic steel.

[0063] Test environment: Temperature: Humidity: 60%.

[0064] Controlled variables: Clamping force and meshing degree of the movable arc teeth.

[0065] Experimental data:

[0066] Data description: Clamping force and clamping precision: As the clamping force increases, the clamping precision gradually improves, indicating that the device can better stabilize the rudder shaft.

[0067] Arc-shaped spring force: The force of the arc-shaped spring increases linearly with the clamping force, ensuring uniform distribution of the clamping pressure.

[0068] Machining precision: As the clamping force increases, the machining precision further improves, and the minimum error reaches 8 μm.

[0069] Meshing precision of the arc teeth: The meshing precision of the arc teeth gradually improves and finally stabilizes at 5 μm, ensuring high-precision operation of the clamping device.

[0070] Comparative test: Comparative test 1: The clamping accuracy of the traditional spiral bevel gear design is 7μm, and the machining accuracy is 25μm.

[0071] Comparative test 2: The clamping accuracy of the device of the present invention is 3μm, and the machining accuracy is 10μm.

[0072] Experimental conclusion: The device of the present invention realizes a more uniform clamping force distribution through the improved arc spring and movable arc gear design, thereby significantly improving the clamping accuracy and machining accuracy.

[0073] Summary: The above embodiments verify the superiority of the device of the present invention in terms of clamping accuracy, adjustment accuracy, centering stability, etc. through a series of experimental data. Compared with the traditional technology, the accuracy and stability in the processing of the rudder shaft are significantly improved, and it has high practical value and popularization prospects.

[0074] Working principle: During use, first keep the fixed base plate 1 fixed on the ground, and then adjust the position and angle of the central clamping mechanism 3 according to the processing requirements. The cooperation of an external wrench and the control square head 15 can drive the stud 13 to rotate, and then drive the lifting clamping plate 14 to move up and down. In the fixed state, the lifting clamping plate 14 can be controlled to move down to cooperate with the positioning port 21. On the contrary, when it is necessary to rotate the angle to adjust the machining end of the rudder shaft, the lifting clamping plate 14 can be controlled to move up so that it exceeds the positioning port 21 and then rotate the rotating plate 2 and then fix it. By driving the distance adjustment screw 23 to rotate through the external rotary knob 24, the position of the central clamping mechanism 3 is adjusted to adjust the supporting position of the rudder shaft; When loading, open the upper arc seat 33 around its mounting shaft, then hoist the rudder shaft into the interior of the central clamping mechanism 3, and keep the upper arc seat 33 and the lower arc seat 32 combined through the spiral locking rod 34. At this time, the end faces of the lower arc seat 32 and the upper arc seat 33 are in contact, forming a closed ring. At this time, the ports of the arc-shaped chute B332 and the arc-shaped chute A322 are communicated. Due to the existence of the arc spring 5, the two sides of the movable arc gear 6 have an outward force. When not under force, the baffle 61 placed above is flush with the end face of the lower arc seat 32, and the two sides of the linkage telescopic mechanism 7 retract outward to expand the distance; The rotation of the adjusting screw 41 can be controlled by rotating the control handwheel 42 at the top. Due to the two limiting plates 43 on its surface, the axial distance between the lifting block 44 and the adjusting screw 41 is maintained. When the adjusting screw 41 rotates, the distance between its end and the center of the inner ring can be controlled. When the adjusting screw 41 moves closer to the center, it can drive the lifting block 44 to move. Then, through the connecting rod 45, the extrusion arc strips 46 on both sides can be driven to slide downward and enter the inside of the arc-shaped chute A322 to extrude and move down the movable arc teeth 6. At this time, the rotating gear sleeve 73 can be driven to rotate, so as to drive the linkage telescopic mechanism 7 to move toward the center through the cooperation of the spiral groove 74 and the spiral rib 72. The distances between the ends of the adjusting screw 41 and the two telescopic rods 71 and the center of the inner ring are the same, and the distances are also the same during movement, thus realizing the central extrusion of the inner ship rudder shaft. Ball bearings 8 are installed at the mutually approaching ends of the adjusting screw 41 and the two telescopic rods 71. The ball bearings 8 can facilitate the rotation of the inner ship rudder shaft. The ends of the telescopic rods 71 facing away from the ball bearings 8 are provided with square structures, so that the telescopic rods 71 can only move axially and will not rotate when the rotating gear sleeve 73 rotates.

[0075] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multifunctional clamping device for processing a rudder shaft, comprising a fixed base plate (1), characterized in that: A fixing bolt (11) is arranged at the centre of the upper surface of the fixing bottom plate (1), a rotating plate (2) is mounted on the surface of the fixing bolt (11), and the rotating plate (2) is used to adjust the angle of the rudder shaft; The fixing bolt (11) is hollow inside and has notched grooves (12) on both sides. A stud (13) is vertically rotatably installed at the center of the fixing bolt (11). A lifting card plate (14) is screwed on the surface of the stud (13). The notched grooves (12) are passed through both sides of the lifting card plate (14). A control square head (15) is arranged on the top of the stud (13). Positioning openings (21) are symmetrically opened on both sides of the center hole on the surface of the rotating plate (2). The end of the lifting card plate (14) is adapted to the internal size of the positioning opening (21). A center clamping mechanism (3) is slidably mounted on the upper surface of the rotating plate (2), the center clamping mechanism (3) clamps the rudder shaft in a centering manner, and a center adjustment mechanism (4) is mounted on the upper part of the center clamping mechanism (3).

2. The multifunctional clamping device for processing a rudder shaft according to claim 1, characterized in that: The central clamping mechanism (3) comprises a movable seat (31) sliding on the surface of the rotating plate (2), a lower arc seat (32) being fixed on the upper surface of the movable seat (31), an upper arc seat (33) being hingedly connected to one side of the top of the lower arc seat (32), and a side of the upper arc seat (33) facing away from its rotation axis being fixed to the lower arc seat (32) via a spiral locking rod (34).

3. The multifunctional clamping device for processing a rudder shaft according to claim 2, characterized in that: The lower arc seat (32) is symmetrically provided with a fixed boss (321) on the outside, the lower arc seat (32) is provided with an arc-shaped slide groove A (322) inside, a mounting hole (323) is provided at the intersection of the fixed boss (321) and the arc-shaped slide groove A (322), and a sliding hole (331) is vertically provided on the top of the upper arc seat (33), and the sliding hole (331) and the two fixed bosses (321) are distributed at 120 degrees.

4. The multifunctional clamping device for processing a rudder shaft according to claim 3, characterized in that: The central adjustment mechanism (4) comprises an adjustment screw (41) which is vertically screwed and penetrates therethrough; a control hand wheel (42) is arranged on the top of the adjustment screw (41); the control hand wheel (42) is placed above the upper arc seat (33); two limit plates (43) are arranged on the surface of the adjustment screw (41); a lifting block (44) is rotatably mounted on the surface of the adjustment screw (41); the lifting block (44) is placed between the two limit plates (43); and the lifting block (44) slides inside the sliding hole (331).

5. The multifunctional clamping device for processing a rudder shaft according to claim 4, characterized in that: The upper arc seat (33) is symmetrically provided with arc-shaped slide grooves B (332), and the arc-shaped slide grooves B (332) correspond to the arc-shaped slide grooves A (322). Connecting rods (45) are hingedly connected to the bottoms of both sides of the lifting block (44). An extruded arc strip (46) is slidably installed inside the arc-shaped slide grooves B (332), and one end of the connecting rod (45) facing away from the lifting block (44) is hingedly connected to the end of the extruded arc strip (46).

6. The multifunctional clamping device for processing a rudder shaft according to claim 5, characterized in that: A movable arc tooth (6) is symmetrically slidably mounted inside the arc-shaped slide groove A (322), baffles (61) are symmetrically arranged at both ends of the movable arc tooth (6), and an arc spring (5) is placed at the bottom of the arc-shaped slide groove A (322), with both ends of the arc spring (5) respectively contacting the surface of the baffle (61).

7. The multifunctional clamping device for processing a rudder shaft according to claim 6, characterized in that: A linkage telescopic mechanism (7) is installed inside the two fixed bosses (321), and the linkage telescopic mechanism (7) comprises a rotating gear sleeve (73) rotating inside the mounting hole (323), the rotating gear sleeve (73) meshing with the movable arc teeth (6), and the inner wall of the rotating gear sleeve (73) is provided with a spiral groove (74).

8. The multifunctional clamping device for processing a rudder shaft according to claim 7, characterized in that: A telescopic rod (71) passes through the interior of the rotating gear sleeve (73), the telescopic rod (71) passes through the inner arc surface of the lower arc seat (32), and a spiral convex strip (72) that matches the spiral groove (74) is provided on the surface of the telescopic rod (71).

9. The multifunctional clamping device for processing a rudder shaft according to claim 8, characterized in that: A ball (8) is installed at the end of the adjusting screw (41) and the two telescopic rods (71) that are close to each other.

10. The multifunctional clamping device for processing a rudder shaft according to claim 2, characterized in that: The rotating plate (2) is symmetrically provided with track grooves (22) on both sides, and a pitch-adjusting screw (23) is rotatably installed at the center of the upper surface of the rotating plate (2). A knob (24) is provided at the end of the pitch-adjusting screw (23), and the knob (24) is placed at the outer end of the rotating plate (2). Both sides of the movable seat (31) slide on the inner side of the positioning opening track grooves (22), and the bottom of the movable seat (31) is screwed onto the pitch-adjusting screw (23).

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