Follow-up tool for machining blade surface of controllable-pitch propeller

Abstract

The utility model belongs to the technical field of propeller machining tools, and particularly discloses a follow-up tool for machining a blade surface of a controllable-pitch propeller, which comprises a gantry machine tool, a first sliding rail is arranged at the bottom of the gantry machine tool, and a clamping component is arranged above the first sliding rail; the clamping assembly comprises a clamping part and a fixing part, the clamping part comprises a clamping rod, the two ends of the clamping rod are each provided with a block, the interiors of the clamping rod and the blocks are each in threaded connection with two threaded rods, one end of each threaded rod is provided with a connecting plate, the bottom of each connecting plate is rotationally connected with a clamping plate, and the bottom of each clamping plate is provided with a soft cushion. The fixing component comprises a first sliding block, the first sliding block is in sliding connection with the first sliding rail, and a fixing frame is arranged at the top of the first sliding block. Through the arrangement of the clamping assembly, the two ends of the blade are clamped, the threaded rods and the clamping plates can evenly apply pressure to guarantee stability, the clamping assembly can be adjusted to adapt to different blade surfaces, machining shaking and displacement are reduced, and machining efficiency is improved. The precision is improved.

Description

Technical Field

[0001] The present application relates to the technical field of propeller processing tooling, and more specifically, to a follower tooling for processing adjustable-pitch propeller blades. Background Art

[0002] Controllable pitch propellers (CPs) play a crucial role in marine propulsion systems. With the modern shipping industry's ever-increasing demands for ship performance, such as higher propulsion efficiency, lower energy consumption, and improved maneuverability, unprecedentedly stringent standards are being placed on the design and manufacturing precision of CPs. As the key component of the interaction between the propeller and the water flow, the shape, dimensional accuracy, and surface quality of the CP blades directly impact the propeller's hydrodynamic performance.

[0003] Publication number CN113510496A is a follower tooling for machining adjustable-pitch propeller blades. This patent allows the propeller's support position to move along with the tool position of the machining tool, which can effectively suppress cutting deformation and cutting flutter at the propeller blade tip.

[0004] Although this patent enables the support position to move following the tool point position of the machining tool, this patent fixes one side of the blade. During machining, the other side of the blade and the blade tip are not sufficiently supported, and the tool will have large local deformation when cutting close to the unfixed side, affecting the blade shape and propeller performance. In addition, this fixing method makes the blade vibration mode single and the natural frequency low. When the cutting force frequency is close to the natural frequency, it is prone to resonant vibration. Since there are fewer constraint points on one side, the vibration is difficult to attenuate, which damages the quality of the machined surface. Utility Model Content

[0005] In order to solve the above problems, the present application provides a follow-up tooling for machining adjustable pitch propeller blades.

[0006] The present application provides a follow-up tooling for machining adjustable pitch propeller blades, which adopts the following technical solutions:

[0007] A follow-up tool for machining an adjustable-pitch propeller blade comprises a gantry machine tool, a first slide rail is provided at the bottom of the gantry machine tool, and a clamping assembly is provided above the first slide rail;

[0008] The clamping assembly includes a clamping part and a fixing part. The clamping part includes a clamping rod. Blocks are provided at both ends of the clamping rod. Two threaded rods are threadedly connected to the inside of the clamping rod and the blocks. One end of each threaded rod is provided with a connecting plate. The bottom of each connecting plate is rotatably connected to a clamping plate, and the bottom of each clamping plate is provided with a soft pad.

[0009] Through the above technical solution, the two ends of the blade are clamped, and multiple threaded rods and clamping plates can apply uniform pressure to ensure stability. They can also be adjusted to adapt to different blade surfaces, reduce processing shake and displacement, and improve precision.

[0010] Furthermore, the fixing component includes a first slider, the first slider is slidably connected to the first slide rail, a fixing frame is provided on the top of the first slider, and a thimble is provided on the opposite side of the fixing frame and the clamping rod.

[0011] Through the above technical solution, the ejectors on both sides generate pre-tightening force during processing, which again prevents the blades from shaking and displacing.

[0012] Furthermore, a connecting ring is provided between the clamping rod and the fixing frame, a plurality of connecting blocks are provided on the inner side of the connecting ring, and rollers are rotatably connected to the interior of the plurality of connecting blocks.

[0013] Through the above technical solution, when the blade needs to be turned over, the motor can drive the clamping rod to rotate, and the roller at the other end of the blade will also rotate when the blade is turned over.

[0014] Furthermore, a swivel is fixedly connected to one side of the clamping rod, a fixed ring is provided on one side of the swivel, and the swivel is rotatably connected to the fixed ring.

[0015] Furthermore, a motor is provided on the outside of the fixed ring, an output end of the motor is connected to a transmission gear via a rotating shaft, an internal rotation of the fixed ring is connected to a ring gear plate, and the transmission gear is meshed with the ring gear plate.

[0016] Furthermore, one end of the gear ring disk close to the rotating ring is fixedly connected to a connecting rod, and the connecting rod is fixedly connected to the rotating ring.

[0017] Furthermore, a second sliding block is provided at the bottom of the fixing ring and the connecting ring, and the two second sliding blocks are both slidably connected to the first slide rail.

[0018] Furthermore, a second slide rail is provided on one side of the first slide rail, the top of the second slide rail is slidably connected to a horizontal slide rail, the top of the horizontal slide rail is slidably connected to an L-shaped rod, the top of the L-shaped rod is connected to a multi-stage telescopic rod, and the top of the multi-stage telescopic rod is fixedly connected to a fulcrum.

[0019] Through the above technical solution, the fulcrum allows the blades to be properly stressed, reducing deformation and vibration.

[0020] In summary, this application includes at least one of the following beneficial technical effects:

[0021] (1) The utility model clamps both ends of the blade by setting a clamping assembly. Multiple threaded rods and clamping plates can apply pressure evenly to ensure stability. They can also be adjusted to adapt to different blade surfaces, reduce processing shaking and displacement, and improve precision. The ejector pins on both sides generate pre-tightening force during processing to prevent the blade from shaking and displacement. Compared with the unilateral fixing method, this assembly avoids the problem of insufficient support on the other side of the blade and the blade tip, reduces local deformation when the tool approaches, changes the vibration characteristics of the blade, suppresses flutter, and ensures processing quality and propeller performance.

[0022] (2) The utility model can accurately and stably transmit the rotational motion of the motor to the clamping rod through the coordinated work of a series of transmission components such as the motor, transmission gear, gear ring plate, connecting rod, and swivel, making the blade turning process smoother and more reliable. This avoids problems such as blade surface damage and position deviation that may be caused by manual turning, thereby improving processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 It is a side view of the utility model;

[0025] Figure 3 This is a schematic diagram of the connection structure between the transmission gear and the gear ring of the utility model;

[0026] Figure 4 This is a schematic diagram of the connection structure between the fixing ring and the clamping rod of the utility model;

[0027] Figure 5 For the utility model Figure 4 A magnified view of the structure at center A.

[0028] Explanation of the accompanying reference numerals: 1. Gantry machine tool; 2. First slide rail; 3. Connecting ring; 4. Connecting block; 5. Roller; 6. Fixed frame; 7. Ejector pin; 8. First slider; 9. Second slider; 10. Fixed ring; 11. Cushion; 12. Clamping plate; 13. Clamping rod; 14. Motor; 15. Transmission gear; 16. Ring gear; 17. Connecting rod; 18. Swivel; 19. Connecting plate; 20. Threaded rod; 21. Second slide rail; 22. Horizontal slide rail; 23. L-shaped rod; 24. Multi-stage telescopic rod; 25. Fulcrum. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; it is obvious that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0030] Reference Figure 1-Figure 5 A follow-up tooling for machining an adjustable pitch propeller blade comprises a gantry machine tool 1, a first slide rail 2 is provided at the bottom of the gantry machine tool 1, and a clamping assembly is provided above the first slide rail 2;

[0031] The clamping assembly includes a clamping part and a fixing part. The clamping part includes a clamping rod 13. Blocks are provided at both ends of the clamping rod 13. The clamping rod 13 and the inside of the block are threadedly connected with two threaded rods 20. One end of each threaded rod 20 is provided with a connecting plate 19. The bottom of each connecting plate 19 is rotatably connected to a clamping plate 12. The bottom of each clamping plate 12 is provided with a soft pad 11.

[0032] The entire follower tooling is constructed around a gantry machine tool 1. A first slideway 2 at the bottom of the gantry machine tool 1 provides a path for the clamping assembly to move. The clamping assembly can move along the first slideway 2, adjusting its position based on the desired machining position of the adjustable-pitch propeller blade.

[0033] The clamping rod 13 in the clamping component is a key structure. Two threaded rods 20 are threadedly connected to the blocks at both ends. When the threaded rod 20 is rotated, the threaded rod 20 will be displaced in the axial direction due to the action of the thread. This displacement is transmitted to the clamping plate 12 through the connecting plate 19, causing the clamping plate 12 to move in the vertical direction. The soft pad 11 at the bottom of each clamping plate 12 is used to contact the propeller blade surface. By rotating the threaded rod 20, the clamping plate 12 moves downward until the soft pad 11 is in close contact with the propeller blade surface and applies a certain pressure, thereby achieving clamping of the propeller blade surface. Since there are multiple threaded rods 20 and clamping plates 12, relatively uniform pressure can be applied to the propeller blade surface from multiple points to ensure the stability of the clamping. At the same time, by adjusting the degree of rotation of each threaded rod 20, propeller blade surfaces of different shapes and sizes can be adaptively clamped.

[0034] The clamping assembly can effectively fix the propeller blade surface in the processing process. Compared with unstable fixing methods, this design of multiple clamping plates 12 and soft pads 11 can reduce the shaking and displacement of the propeller during processing, thereby improving processing accuracy.

[0035] Reference Figure 1-Figure 2The fixing component includes a first slider 8, which is slidably connected to the first slide rail 2. A fixing frame 6 is provided on the top of the first slider 8. A thimble 7 is provided on the opposite side of the fixing frame 6 and the clamping rod 13. A connecting ring 3 is provided between the clamping rod 13 and the fixing frame 6. A plurality of connecting blocks 4 are provided on the inner side of the connecting ring 3, and rollers 5 are rotatably connected to the interior of the plurality of connecting blocks 4.

[0036] The first slider 8 in the fixed component is slidably connected to the first slide rail 2 at the bottom of the gantry machine tool 1, which allows the fixed component to move freely along the slide rail. The fixed frame 6 on the top of the first slider 8 moves accordingly, and the ejector pin 7 provided on the opposite side of the fixed frame 6 and the clamping rod 13 is used to position the propeller blade. In actual operation, the ejector pins 7 on both sides first move inward when the blade is processed, and a certain pre-tightening force is generated on the blade when the ejector pins 7 move inward. This pre-tightening force can fix the blade in a relatively stable position before the clamping plate 12 is clamped, preventing the blade from shaking or displacing during the initial installation process. After the clamping plate 12 is clamped, the ejector pin 7 can move slightly inward again to increase the pre-tightening force of the ejector pin 7 on the blade.

[0037] Reference Figure 2-Figure 4 A swivel 18 is fixedly connected to one side of the clamping rod 13, and a fixed ring 10 is provided on one side of the swivel 18. The swivel 18 is rotatably connected to the fixed ring 10. A motor 14 is provided on the outside of the fixed ring 10, and the output end of the motor 14 is connected to a transmission gear 15 through a rotating shaft. The inside of the fixed ring 10 is rotatably connected to a ring gear disk 16, and the transmission gear 15 is engaged with the ring gear disk 16. The end of the ring gear disk 16 close to the swivel 18 is fixedly connected to a connecting rod 17, and the connecting rod 17 is fixedly connected to the swivel 18. A second slider 9 is provided at the bottom of the fixed ring 10 and the connecting ring 3, and the two second sliders 9 are both slidably connected to the first slide rail 2.

[0038] When motor 14 is activated as a power source, its output drives transmission gear 15 through a rotating shaft. Because transmission gear 15 meshes with ring gear 16, its rotational motion is transmitted to ring gear 16, causing it to rotate about its own axis. Connecting rod 17, fixedly attached to ring gear 16, rotates along with it. Connecting rod 17, in turn, is fixedly connected to swivel 18, which is in turn fixedly connected to one side of clamping rod 13. This transfers the rotational motion of motor 14 to clamping rod 13, allowing it to rotate about the pivot point where swivel 18 connects to fixed ring 10.

[0039] When the blade needs to be turned over, the motor 14 can drive the clamping rod 13 to rotate, and the roller 5 at the other end of the blade will also rotate when the blade is turned over. At this time, the ejector pin 7 close to the side of the connecting ring 3 does not contact the blade, which facilitates the turning of the blade.

[0040] Reference Figure 1-Figure 2 A second slide rail 21 is provided on one side of the first slide rail 2, and the top of the second slide rail 21 is slidably connected to a horizontal slide rail 22. The top of the horizontal slide rail 22 is slidably connected to an L-shaped rod 23. The top of the L-shaped rod 23 is connected to a multi-stage telescopic rod 24, and the top of the multi-stage telescopic rod 24 is fixedly connected to a fulcrum 25.

[0041] The sliding connection between the second slide rail 21 and the transverse slide rail 22 enables the transverse slide rail 22 to move in one direction along the second slide rail 21, while the sliding connection between the transverse slide rail 22 and the L-shaped rod 23 allows the L-shaped rod 23 to move in another direction on the transverse slide rail 22. In this way, through the combination of sliding in these two directions, the L-shaped rod 23 can flexibly adjust its position within the plane, and the multi-stage telescopic rod 24 connected to the top of the L-shaped rod 23 can achieve height adjustment. Through the telescopic action of the telescopic rod, the height of the fulcrum 25 can be changed, thereby finely adjusting the position of the fulcrum 25 in three-dimensional space. During the processing, this fulcrum 25 with flexible position adjustment can contact the propeller blade to support the blade. According to the shape, size and processing location of the blade, the fulcrum 25 can be moved to the appropriate position through the above-mentioned position adjustment mechanism, so that the blade can be subjected to force in a more reasonable manner during the processing, reducing deformation and vibration.

[0042] Working Principle: The first slide rail 2 at the bottom of the gantry machine tool 1 provides a moving track for the clamping assembly above, which can be moved as needed. First, during machining, the ejector pin 7 moves inward, generating a preload to secure the blade and prevent it from shaking or moving.

[0043] The blade is then clamped using a clamping component. The clamping rod 13 of the clamping component has blocks at both ends. When the threaded rod 20, which is internally threadedly connected to the rod and the blocks, rotates, the threads generate axial displacement, which is transmitted to the clamping plate 12 via the connecting plate 19, causing it to move vertically. The soft pad 11 at the bottom of the clamping plate 12 contacts the propeller blade surface. By rotating the threaded rod 20, the clamping plate 12 is pressed downward to clamp the blade surface. Multiple threaded rods 20 and the clamping plate 12 can apply uniform pressure from multiple points to ensure stability. The threaded rods 20 can also be adjusted to accommodate blade surfaces of different shapes and sizes. After the clamping plate 12 is clamped, the ejector pin 7 can be moved slightly inward again to increase the preload force.

[0044] When flipping is required, the motor 14 is started, and its output shaft drives the transmission gear 15 to rotate, meshing with the ring gear plate 16, causing the ring gear plate 16 to rotate, and through the connecting rod 17 drives the rotating ring 18 and the clamping rod 13 to rotate around the connection point with the fixed ring 10 to complete the flipping. When flipping, the ejector pin 7 on the side close to the connecting ring 3 does not touch the blade.

[0045] Furthermore, a second rail 21 on one side of the first rail 2 is slidably connected to a transverse rail 22, which in turn is slidably connected to an L-shaped rod 23. These two components allow the L-shaped rod 23 to be flexibly adjusted within a plane. A multi-stage telescopic rod 24 at its top allows for height adjustment, thereby finely adjusting the three-dimensional position of the fulcrum 25. During machining, the fulcrum 25 is adjusted to the appropriate position based on the blade's shape, size, and machining location, ensuring optimal force distribution and minimizing deformation and vibration. The entire tooling, through the coordinated operation of its various components, enables efficient machining of adjustable-pitch propeller blades.

[0046] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A follower tool for machining adjustable pitch propeller blades, characterized in that: include: A gantry machine tool (1), wherein a first slide rail (2) is provided at the bottom of the gantry machine tool (1), and a clamping assembly is provided above the first slide rail (2); The clamping assembly includes a clamping part and a fixing part, wherein the clamping part includes a clamping rod (13), blocks are provided at both ends of the clamping rod (13), the clamping rod (13) and the interior of the blocks are both threadedly connected to two threaded rods (20), one end of each threaded rod (20) is provided with a connecting plate (19), the bottom of each connecting plate (19) is rotatably connected to a clamping plate (12), and the bottom of each clamping plate (12) is provided with a soft pad (11).

2. The follower tool for machining the blade surface of a controllable pitch propeller according to claim 1, characterized in that: The fixing component comprises a first slider (8), the first slider (8) being slidably connected to the first slide rail (2), a fixing frame (6) being provided on the top of the first slider (8), and a thimble (7) being provided on the opposite side of the fixing frame (6) and the clamping rod (13).

3. The follower tool for machining the blade surface of a controllable pitch propeller according to claim 1, characterized in that: A connecting ring (3) is provided between the clamping rod (13) and the fixing frame (6), a plurality of connecting blocks (4) are provided on the inner side of the connecting ring (3), and rollers (5) are rotatably connected to the interior of the plurality of connecting blocks (4).

4. The follower tool for machining the blade surface of a controllable pitch propeller according to claim 1, characterized in that: A swivel (18) is fixedly connected to one side of the clamping rod (13), a fixed ring (10) is provided on one side of the swivel (18), and the swivel (18) is rotatably connected to the fixed ring (10).

5. The follower tool for machining the blade surface of a controllable pitch propeller according to claim 4, characterized in that: A motor (14) is provided on the outside of the fixing ring (10), and an output end of the motor (14) is connected to a transmission gear (15) via a rotating shaft. A ring gear (16) is rotatably connected to the inside of the fixing ring (10), and the transmission gear (15) is meshed with the ring gear (16).

6. The follower tool for machining the blade surface of a controllable pitch propeller according to claim 5, characterized in that: One end of the gear ring disk (16) close to the rotating ring (18) is fixedly connected to a connecting rod (17), and the connecting rod (17) is fixedly connected to the rotating ring (18).

7. The follower tool for machining the blade surface of a controllable pitch propeller according to claim 6, characterized in that: The bottoms of the fixing ring (10) and the connecting ring (3) are both provided with second sliding blocks (9), and the two second sliding blocks (9) are both slidably connected to the first slide rail (2).

8. The follower tool for machining the blade surface of a controllable pitch propeller according to claim 1, characterized in that: A second slide rail (21) is provided on one side of the first slide rail (2), the top of the second slide rail (21) is slidably connected to a transverse slide rail (22), the top of the transverse slide rail (22) is slidably connected to an L-shaped rod (23), the top of the L-shaped rod (23) is connected to a multi-stage telescopic rod (24), and the top of the multi-stage telescopic rod (24) is fixedly connected to a fulcrum (25).

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