Fan blade de-weight balancing device

Abstract

The invention discloses a fan blade de-weight balancing device which comprises a base, a clamping component and a frame, the clamping component and the frame are arranged on the base, and the frame is provided with a position adjusting mechanism. The position adjusting mechanism is provided with a first transverse moving frame, a grooving mechanism is movably connected into the first transverse moving frame and can be in a vertical state or an inclined state, and an angle adjusting mechanism is arranged on the first transverse moving frame and used for driving the grooving mechanism to move between the vertical state and the inclined state. The grooving mechanism comprises an adjusting frame, a rotating shaft, a grinding wheel and a first driving mechanism. According to the fan blade de-weight balancing device, the grooving mechanism is integrated with a grinding wheel and cutting structure double machining assembly, the grinding wheel can open wide grooves to achieve mass de-weight, and the cutting structure can open small-hole-shaped grooves to complete small-amount accurate de-weight; and the grooving angle can be flexibly adjusted in cooperation with the angle adjusting mechanism so that the grooving width and the grooving shape can be controlled, the diversified weight removing requirements of fan blades of different specifications and materials can be met, and the machining flexibility is remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of dynamic balancing technology for fan blades, and more particularly to a fan blade weight-reducing balancing device. Background Technology

[0002] A fan blade is a blade-shaped component that is driven by rotation or fluid. It is widely used in equipment such as fans, wind turbines, and aircraft propellers to provide ventilation, power generation, and other functions. Its shape and material depend on its application.

[0003] In the production and manufacturing process of fan blades, in order to ensure the balance performance of the fan blades when rotating at high speed and to avoid vibration, noise or even damage to the equipment caused by imbalance, it is a crucial step to perform precise weight reduction on the fan blades.

[0004] Currently, existing fan blade weight-reducing and balancing devices have many limitations in practical applications: the grooving angle of the existing devices is not flexible enough, and the angle of the grooving structure is fixed or has a limited range of adjustment. It is impossible to flexibly adjust the angle with the grooving surface of the fan blade according to the actual structure of the fan blade and the weight reduction requirements, thus making it difficult to achieve grooving operations with different angles, widths, and shapes. For example, when it is necessary to groove the surface of the fan blade with different degrees of inclination, the existing devices can often only cut grooves of fixed width or shape, and cannot adapt to diverse grooving requirements by adjusting the grinding wheel angle. This results in unsatisfactory weight reduction effect, making it difficult to meet the balance performance requirements of fan blades of different specifications and in different usage scenarios, thus limiting the applicability and processing efficiency of the device. In addition, the existing devices cannot switch between fine grooving and coarse grooving, further affecting the weight reduction quality of the fan blade.

[0005] Therefore, a fan blade weight-reducing and balancing device is proposed to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to propose a fan blade weight-reducing and balancing device to solve the problems of poor flexibility in the slotting angle of existing fan blade weight-reducing and balancing devices, fixed angle or limited adjustment range, inability to flexibly adjust the angle with the slotting surface of the fan blade according to the actual structure of the fan blade and the weight-reducing requirements, and difficulty in realizing slotting operations of different angles, widths and shapes.

[0007] To achieve this objective, the present invention adopts the following technical solution: A fan blade weight-reducing and balancing device includes: a base, a clamping component and a frame disposed on the base, the frame being provided with an adjustment mechanism; The adjustment mechanism is provided with a horizontal moving frame, and a slotting mechanism is movably connected inside the horizontal moving frame. The slotting mechanism can be in a vertical state or an inclined state. The horizontal moving frame is provided with an angle adjustment mechanism for driving the slotting mechanism to move between the vertical state and the inclined state. The grooving mechanism includes an adjusting frame, a rotating shaft, a grinding wheel, and a drive mechanism. The adjusting frame is movably installed inside the transverse frame. The rotating shaft is rotatably connected to the adjusting frame. The grinding wheel is fixedly sleeved on the rotating shaft. The drive mechanism is set on the adjusting frame to drive the rotating shaft to rotate. The rotating shaft is a tubular structure. An electric push rod is provided on the adjusting frame. A connecting plate is provided at the telescopic end of the electric push rod. The connecting plate is rotatably connected to a slotted shaft whose other end extends into the interior of the rotating shaft. A cutting structure is provided at the end of the slotted shaft away from the connecting plate. A limiting structure is provided between the slotted shaft and the rotating shaft. The limiting structure can restrict the slotted shaft from rotating relative to the rotating shaft around the axis, but does not restrict the slotted shaft from sliding along the axial direction of the rotating shaft.

[0008] Optionally, the adjustment mechanism includes a horizontal module, a vertical module one, and a lifting part one. The horizontal module is disposed on the frame, the vertical module one is disposed on the horizontal module, the moving direction of the horizontal module is perpendicular to the moving direction of the vertical module one, the lifting part one is disposed on the vertical module one, and the end of the lifting part one away from the vertical module one is connected to the horizontal moving frame one.

[0009] Optionally, the drive mechanism includes a drive shaft, a first sprocket, a second sprocket, a chain, and a first motor. The drive shaft is rotatably connected to the adjusting frame and is arranged parallel to the rotating shaft. The first motor is mounted on the adjusting frame, and the output shaft of the first motor is coaxially connected to one end of the drive shaft. The first sprocket is fixedly mounted on the drive shaft, and the second sprocket is fixedly mounted on the rotating shaft. The first sprocket and the second sprocket are connected by the chain drive.

[0010] Optionally, the angle adjustment mechanism includes a rotating shaft, a worm gear, a worm, a connecting seat, and a second motor; the rotating shaft is rotatably connected to the inner wall of the first transverse frame, the upper end of the adjustment frame is fixedly connected to the rotating shaft, both ends of the worm are mounted on the first transverse frame through the connecting seat, the second motor is provided on the connecting seat, the output shaft of the second motor is coaxially connected to the worm, the worm gear is fixedly sleeved on the rotating shaft, and the worm gear meshes with the worm.

[0011] Optionally, the limiting structure includes a bushing, a slider, and a groove; the groove is disposed on the inner circumferential surface of the rotating shaft and extends along the length of the rotating shaft; the bushing is fixedly sleeved on the slotted shaft, the slider is disposed on the bushing, and one end of the slider away from the bushing is embedded in the groove.

[0012] Optionally, the horizontal module is a dual-station electric slide table. One moving station of the dual-station electric slide table is connected to the first vertical module, and the other moving station is equipped with a second vertical module. The length of the first vertical module is parallel to the length direction of the second vertical module. The moving end of the second vertical module is equipped with a lifting part, and the end of the lifting part away from the second vertical module is equipped with a transverse frame. The transverse frame has a hollow component inside, and the periphery of the hollow component has a cutting edge. The two ends of the transverse frame are respectively rotatably connected to a short bushing and a long bushing. The opposite ends of the short bushing and the long bushing are connected to the hollow component. The cavity is fixedly connected and communicated at its center. A drive shaft passing through the center of the cavity is rotatably connected between the short bushing and the long bushing, with one end of the drive shaft extending out of the short bushing. A cutter shaft is rotatably connected inside the cavity, and the cutter shaft is arranged parallel to the drive shaft. The cutter shaft is equipped with a driven gear. A drive gear located inside the cavity and meshing with the driven gear is fixedly sleeved on the drive shaft. The transverse frame is equipped with a second drive mechanism for driving the drive shaft to rotate. The cutter shaft is equipped with a grooving cutter, and one end of the grooving cutter has a cutting edge corresponding to and extending out of the outside of the cutting edge.

[0013] Optionally, the second drive mechanism includes a drive motor, a transmission wheel, and an annular flexible transmission component. The drive motor is mounted on the second transverse frame, and the output shaft of the drive motor and the end of the transmission shaft that extends out of the short bushing are both provided with transmission wheels. The two transmission wheels are connected by the annular flexible transmission component.

[0014] Optionally, the cavity component is a disc-shaped hollow structure, the number of cutting edges is multiple and they are distributed around the center of the cavity component as an axis, the number of cutting shafts is multiple, the number of grooving cutters is multiple and they are installed on the multiple cutting shafts one by one, the multiple grooving cutters correspond one-to-one with the multiple cutting edges, and the width of the multiple grooving cutters gradually increases.

[0015] Optionally, the transverse frame 2 is equipped with a tool changing motor, the output shaft of the tool changing motor is arranged parallel to the transmission shaft, the output shaft of the tool changing motor and the long shaft sleeve are both fixedly fitted with transmission wheels 2, and the two transmission wheels 2 are connected by a ring flexible transmission component 2.

[0016] Optionally, the base has a cavity structure, the clamping component is a pneumatic chuck, the pneumatic chuck has a fixed part, a rotating part and a clamping part, the fixed part is fixed to the base, the clamping part is the part for clamping objects, the rotating part rotatably extends into the interior of the base, the clamping part is disposed on the rotating part, a transmission wheel three is fixedly sleeved on the rotating part, an adjustment motor is disposed inside the base, a transmission wheel four is disposed on the output shaft of the adjustment motor, and an annular flexible transmission component three is connected between the transmission wheel three and the transmission wheel four.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. The grooving mechanism integrates a grinding wheel and a cutting structure as dual processing components. The grinding wheel can open wide grooves to achieve a large amount of weight removal, while the cutting structure can open small hole-shaped grooves to complete a small amount of precise weight removal. With the help of the angle adjustment mechanism, the grooving angle can be flexibly adjusted to control the grooving width and the shape of the grooving, meeting the diverse weight removal needs of fan blades of different specifications and materials, and significantly improving processing flexibility.

[0018] 2. Adopting a dual-station electric slide design, the two moving stations drive the vertical module to operate independently. It can achieve synchronous or step-by-step de-duplication in symmetrical positions for special imbalance situations such as blade misalignment. Through collaborative operation, the imbalance is offset, which greatly improves the de-duplication accuracy and the ability to handle complex imbalance states.

[0019] 3. Equipped with multiple grooving cutters of progressively increasing width and a rotary tool changing mechanism, the tool changing motor can drive the rapid switching of grooving cutters of different widths without the need for manual replacement during machine downtime. This not only improves tool changing efficiency but also expands the adaptability of the device to different grooving width requirements, ensuring continuous and efficient processing. Attached Figure Description

[0020] The accompanying drawings further illustrate the present invention, but the content of the drawings does not constitute any limitation on the present invention.

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the grooving mechanism, angle adjustment mechanism, electric push rod, connecting plate, grooving shaft, and cutting structure of the present invention. Figure 3 This is an exploded view of the adjusting frame, grinding wheel, rotating shaft, electric push rod, connecting plate, slotted shaft, cutting structure, and limiting structure of the present invention. Figure 4 This is a schematic diagram of the structure of the second drive mechanism, the tool changing motor, the second transmission wheel, the second annular flexible transmission component, the second transverse frame, the hollow component, and the grooving tool of the present invention. Figure 5This is a partial exploded cross-sectional view of the transverse shift frame 2 and the cavity component of the present invention (one side of the cavity component is cut open); Figure 6 This is a schematic diagram of the internal structure of the cavity component of the present invention (one side of the cavity component is cut open). Figure 7 This is a schematic diagram of the internal structure of the base of the present invention (the base is cut open in the middle).

[0022] In the attached diagram: 1. Base; 2. Clamping component; 3. Frame; 41. Horizontal module; 42. Vertical module one; 5. Lifting part one; 6. Horizontal moving frame one; 7. Slotting mechanism; 71. Adjusting frame; 72. Rotating shaft; 73. Grinding wheel; 75. Drive mechanism one; 751. Drive shaft; 752. Sprocket one; 753. Sprocket two; 754. Chain; 755. Motor one; 8. Angle adjustment mechanism; 81. Rotating shaft; 82. Worm gear; 83. Worm; 84. Connecting seat; 85. Motor two; 9. Electric push rod; 10. Connecting plate; 11. Slotting shaft; 12. Cutting structure; 13. Limiting structure; 131. Bushing part; 132. Slider; 133. Slide groove ; 15. Vertical module two; 16. Lifting part two; 17. Horizontal moving frame two; 18. Cavity component; 19. Cutting edge; 201. Short bushing; 202. Long bushing; 21. Drive shaft; 22. Cutting shaft; 23. Driven gear; 24. Driving gear; 25. Drive mechanism two; 251. Drive motor; 252. Transmission wheel one; 253. Annular flexible transmission component one; 26. Grooving cutter; 271. Transmission wheel three; 272. Transmission wheel four; 273. Positioning motor; 274. Annular flexible transmission component three; 28. Annular angle indicator; 29. ​​Handle; 30. Drill chuck; 311. Tool changing motor; 312. Transmission wheel two; 313. Annular flexible transmission component two. Detailed Implementation

[0023] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, and "several" means one or more, unless otherwise explicitly specified.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] The following disclosure provides many different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0027] In this embodiment, by Figure 1-7 Provided is a fan blade weight-reducing and balancing device, comprising: The base 1, the clamping component 2 and the frame 3 are provided on the base 1, and the frame 3 is provided with an adjustment mechanism; The adjustment mechanism is provided with a transverse frame 6, and a slotting mechanism 7 is movably connected inside the transverse frame 6. The slotting mechanism 7 can be in a vertical state or an inclined state. The transverse frame 6 is provided with an angle adjustment mechanism 8, which is used to drive the slotting mechanism 7 to move between the vertical state and the inclined state. It's important to note that to eliminate uneven mass distribution during rotation, the fan blades need to undergo weight reduction and balancing, which involves removing a portion of the material to achieve dynamic balance and prevent vibrations, noise, component wear, and even safety hazards caused by imbalance. This process is crucial for ensuring the stable, efficient, and safe operation of the fan blades. Of course, besides weight reduction, adding weight-adding material to a specific location on the fan blade can also achieve dynamic balance. However, only certain types of fan blades, where the blade itself has a designated area to accommodate added material (such as cavities), can achieve dynamic balance by adding weight. But some special fan blades, due to their design and application principles, lack designated areas for weight addition; therefore, weight reduction is the only alternative. For aesthetic reasons, weight reduction is typically performed on the inner circumference and bottom surface of the fan blade.

[0028] Reference Figure 3As shown, the grooving mechanism 7 includes an adjusting frame 71, a rotating shaft 72, a grinding wheel 73, and a drive mechanism 75. The adjusting frame 71 is movably installed inside the transverse frame 6. The rotating shaft 72 is rotatably connected to the adjusting frame 71. The grinding wheel 73 is fixedly sleeved on the rotating shaft 72. The drive mechanism 75 is set on the adjusting frame 71 and is used to drive the rotating shaft 72 to rotate. The drive mechanism 75 includes a drive shaft 751, a first sprocket 752, a second sprocket 753, a chain 754, and a first motor 755. The drive shaft 751 is rotatably connected to the adjusting frame 71 and is arranged parallel to the rotating shaft 72. The first motor 755 is mounted on the adjusting frame 71, and the output shaft of the first motor 755 is coaxially connected to one end of the drive shaft 751. The first sprocket 752 is fixedly mounted on the drive shaft 751, and the second sprocket 753 is fixedly mounted on the rotating shaft 72. The first sprocket 752 and the second sprocket 753 are connected by the chain 754.

[0029] Specifically, motor 755 drives drive shaft 751 to rotate, which in turn drives sprocket 752 to rotate. Through chain 754, sprocket 753 and the connected rotating shaft 72 are rotated. The rotating grinding wheel 73 can grind and remove weight from the fan blades.

[0030] Reference Figure 3 As shown, the rotating shaft 72 has a tubular structure. An electric push rod 9 is mounted on the adjusting frame 71. A connecting plate 10 is mounted on the telescopic end of the electric push rod 9. The connecting plate 10 is rotatably connected to a slotted shaft 11 whose other end extends into the rotating shaft 72. A cutting structure 12 is mounted on the end of the slotted shaft 11 away from the connecting plate 10. The cutting structure 12 is specifically a drill bit, milling cutter, etc. A limiting structure 13 is provided between the slotted shaft 11 and the rotating shaft 72. The limiting structure 13 is similar to the structure of a splined shaft or splined sleeve. Therefore, the limiting structure 13 can restrict the slotted shaft 11 from rotating about the axis relative to the rotating shaft 72, but does not restrict the slotted shaft 11 from rotating about the axis. 1. Slide along the axial direction of the rotating shaft 72; the limiting structure 13 includes a bushing portion 131, a slider 132, and a groove 133; the groove 133 is provided on the inner circumferential surface of the rotating shaft 72, that is, the groove 133 is a groove formed on the inner circumferential surface of the rotating shaft 72, and the groove 133 extends along the length direction of the rotating shaft 72; the bushing portion 131 is fixedly sleeved on the slotted shaft 11, and the slider 132 is provided on the bushing portion 131. For example, the slider 132 can be a rib integrally extended outward from the outer circumferential surface of the bushing portion 131, and the end of the slider 132 away from the bushing portion 131 is embedded in the groove 133.

[0031] Specifically, the rotating shaft 72, as a tubular structure, provides installation space for the internal slotted shaft 11. When the drive mechanism drives the rotating shaft 72 to rotate, the slotted shaft 11 rotates synchronously with the rotating shaft 72 through the spline-like limiting structure 13, where the slider 132 on the bushing 131 is embedded in the groove 133 on the inner circumferential surface of the rotating shaft 72. This drives the cutting structures 12 at the end, such as the drill bit and milling cutter, to rotate to achieve the cutting action. At the same time, the electric push rod 9 on the adjusting frame 71 can push the slotted shaft 11 to slide along the axial direction of the rotating shaft 72 through the connecting plate 10, thereby realizing the feed or retraction of the cutting structure 12. This design not only ensures that the cutting structure 12 can rotate stably with the rotating shaft 72 to perform cutting, but also allows for flexible adjustment of the cutting depth through the electric push rod 9 to adapt to the weight removal requirements of different positions of the fan blade. Furthermore, the cooperation between the slider 132 and the groove 133 ensures smooth sliding, guaranteeing the stability and accuracy of the cutting process.

[0032] Reference Figure 1 As shown, the adjustment mechanism includes a horizontal module 41, a vertical module 42, and a lifting part 5. The horizontal module 41 is disposed on the frame 3, the vertical module 42 is disposed on the horizontal module 41, the moving direction of the horizontal module 41 is perpendicular to the moving direction of the vertical module 42, the lifting part 5 is disposed on the vertical module 42, and the end of the lifting part 5 away from the vertical module 42 is connected to the horizontal moving frame 6.

[0033] Specifically, the horizontal module 41 is fixed to the frame 3 as a basic moving unit, which can drive the vertical module 42 along the horizontal direction. Figure 1 The horizontal module 41 moves linearly along the x-axis, providing lateral position adjustment for the horizontal moving frame 6. The vertical module 42 remains perpendicular to the horizontal module 41 and can move independently in the vertical direction, thereby driving the lifting unit 5, the horizontal moving frame 6, and the slotting mechanism 7 to achieve vertical position adjustment. The horizontal module 41 and the vertical module 42 form a combination of horizontal and vertical vertical movements (based on...). Figure 1 The x-axis and z-axis directions enable the grooving mechanism 7 to accurately reach the designated working position according to the processing requirements of the fan blade, so as to control the depth and length of the grooving mechanism 7 on the fan blade.

[0034] Reference Figure 2 As shown, the angle adjustment mechanism 8 includes a rotating shaft 81, a worm gear 82, a worm 83, a connecting seat 84, and a second motor 85. The rotating shaft 81 is rotatably connected to the inner wall of the transverse frame 6. The upper end of the adjustment frame 71 is fixedly connected to the rotating shaft 81. Both ends of the worm 83 are mounted on the transverse frame 6 through the connecting seat 84. The second motor 85 is provided on the connecting seat 84. The output shaft of the second motor 85 is coaxially connected to the worm 83. The worm gear 82 is fixedly sleeved on the rotating shaft 81 and meshes with the worm 83.

[0035] Specifically, motor 85 drives worm 83 to rotate, and worm wheel 82 meshing with worm 83 drives it to rotate around shaft 81, thereby causing the adjusting frame 71, grinding wheel 73 and cutting structure 12 connected to shaft 81 to deflect at an angle, thus completing arbitrary angle adjustment between vertical and inclined states. Figure 1 (In a vertical position), and with the adjustment mechanism, the grinding wheel 73 can slot the fan blades at different angles to achieve different widths of weight removal. Furthermore, by adjusting the angle, the grinding wheel 73 or the cutting structure 12 can be switched to remove weight from the fan blades. The grinding wheel 73 has wide, rectangular slots, while the cutting structure 12 has slots that are either hole-like or nearly hole-like. Either can be selected as needed, offering greater practicality. For heavy weight removal, the grinding wheel 73 is used directly, and since its axis is parallel to the fan blades, the contact area is maximized, resulting in higher efficiency. For moderate weight removal, the grinding wheel 73 needs to be tilted to reduce the contact area, reducing the weight removed compared to the parallel position. For light weight removal, the cutting structure 12 can be used to create slots, minimizing the contact area between the cutting structure 12 and the fan blades for precise weight removal. Moreover, the shape of the slots created by the grinding wheel 73 or the cutting structure 12 varies depending on the angle. When encountering special inclined surfaces, the tilt can be adjusted to accommodate the specific grooving requirements.

[0036] Therefore, when the angle of the grinding wheel 73 on the grooving mechanism 7 changes, the width of the groove also changes. That is, the width of the groove is greatest when the grinding wheel 73 is parallel to the surface of the fan blade that needs to be grooved; when the grinding wheel 73 is inclined to the surface of the fan blade that needs to be grooved, the width of the groove is smaller than that in the parallel state. It should be noted that the angle between the grinding wheel 73 and the surface of the fan blade that needs to be grooved is less than or equal to 90°. The larger the angle, the smaller the width of the groove, and vice versa. In addition, the shape of the groove cut by the grinding wheel 73 at each angle state (which is different from the angle between the grinding wheel 73 and the surface of the fan blade that needs to be grooved) is also different.

[0037] refer to Figures 1 to 3 In summary, by fixing the fan blades with the clamping component 2 on the base 1, the adjustment mechanism on the frame 3, through the coordinated movement of the horizontal module 41, the vertical module 42, and the lifting part 5, drives the horizontal moving frame 6 and the slotting mechanism 7 to achieve precise two-dimensional position adjustment. Figure 1The x-axis and z-axis directions ensure that the processing position fits the weight removal requirements of the fan blades; the angle adjustment mechanism 8 uses motor 2 85 to drive worm gear 83 and worm wheel 82, so that the adjustment frame 71 and grooving mechanism 7 can flexibly switch the angle between vertical and inclined states, so as to achieve precise control of the grooving width from the maximum to gradually decrease, to meet different weight removal requirements; in the grooving mechanism 7, the drive mechanism 1 75 drives the rotating shaft 72 and grinding wheel 73 to rotate through sprocket and chain 754 for grinding and weight removal, while the grooving shaft 11 in the tubular rotating shaft 72 is synchronized with the rotating shaft 72 under the action of the spline-like limiting structure 13. The rotation, combined with the electric push rod 9, enables the cutting structure 12 to rotate and adjust its feed. It can achieve large-scale weight removal by using the wide groove of the grinding wheel 73, or small-scale precise weight removal by using the small-hole groove of the cutting structure 12. The cooperation between the slider 132 and the groove 133 ensures the stability and smoothness of the cutting process. Ultimately, it effectively eliminates the uneven mass distribution during the rotation of the fan blade, achieves dynamic balance, avoids vibration, noise, component wear and safety hazards, and ensures the stable, efficient and safe operation of the fan blade. At the same time, it is suitable for special fan blades with no space for weight increase, and completes beautiful and precise weight removal operations on the inner circumference and inner bottom surface of the fan blade, which is extremely practical.

[0038] A drill chuck 30 is provided at the end of the slotted shaft 11 away from the connecting plate 10. The drill chuck 30 is used to hold the cutting structure 12. Based on the above, the cutting structure 12 is a drill bit, end mill, etc. The drill chuck 30 allows for convenient installation and replacement of different types and specifications of cutting structures 12. When it is necessary to replace the cutting structure 12 according to the requirements of the shape and depth of the fan blade slot, as well as the damage condition, the replacement of the cutting structure 12 can be quickly completed by simply operating the drill chuck 30 to loosen or tighten it.

[0039] Reference Figures 1 to 6As shown, in the actual operation of fan blade weight reduction and balancing, facing fan blades of different specifications, materials, and weight reduction requirements, the aforementioned structure can only reduce weight at the same position of the fan blade. Furthermore, a single processing method and structure is difficult to meet special weight reduction requirements. For example, when the fan blade has an even imbalance (even imbalance is the existence of unbalanced masses of equal size and opposite direction within a symmetrical plane), it is necessary to offset this imbalance by reducing weight at symmetrical positions. Based on this, in this embodiment, the horizontal module 41 is a dual-station electric slide. One moving station of the dual-station electric slide is connected to the vertical module 1 42, and the other moving station is equipped with the vertical module 2 15. The length of the vertical module 1 42 is parallel to the length direction of the vertical module 2 15. The moving end of the vertical module 2 15 is equipped with a lifting part 2 16. The end of the lifting part 2 16 away from the vertical module 2 15 is equipped with a transverse frame 2 17. The transverse frame 2 17 has a hollow component 18 inside. The hollow component 18 is hollow inside. The structure includes a notch 19 on the circumferential side of the cavity component 18. A short bushing 201 and a long bushing 202 are rotatably connected to both ends of the transverse frame 17. The opposite ends of the short bushing 201 and the long bushing 202 are fixedly connected to and communicate with the center of the cavity component 18. That is, the opposite ends of the short bushing 201 and the long bushing 202 only communicate with the cavity component 18 and do not penetrate or extend into it. Furthermore, the internal diameter of the cavity component 18 is much larger than the internal diameter of the long bushing 202. A drive shaft 21, passing through the center of the cavity component 18, is rotatably connected between the short bushing 201 and the long bushing 202. Therefore, the middle part of the drive shaft 21 is suspended inside the cavity component 18 and is not enclosed by the short bushing 201 and the long bushing 202. Additionally, one end of the drive shaft 21 extends out of the short bushing 201. The cavity 18 is rotatably connected to a cutter shaft 22, which is parallel to the drive shaft 21. The cutter shaft 22 is provided with a driven gear 23. The drive shaft 21 is fixedly fitted with a driving gear 24 located inside the cavity 18 and meshing with the driven gear 23. That is, the driving gear 24 is fixedly fitted in the middle part of the drive shaft 21. The transverse frame 17 is provided with a drive mechanism 25 for driving the drive shaft 21 to rotate. The cutter shaft 22 is equipped with a grooving cutter 26. One end of the grooving cutter 26 corresponds to the cutting edge 19 and extends out of the outside of the cutting edge 19.

[0040] The drive mechanism 25 includes a drive motor 251, a transmission wheel 252, and an annular flexible transmission component 253. The drive motor 251 is mounted on the transverse frame 17. Both the output shaft of the drive motor 251 and the end of the transmission shaft 21 extending out of the short bushing 201 are equipped with transmission wheels 252. The two transmission wheels 252 are connected by the annular flexible transmission component 253. When the drive motor 251 operates, its output shaft drives the corresponding transmission wheel 252 to rotate. Through the transmission action of the annular flexible transmission component 253, the transmission wheel 252 extending out of the short bushing 201 of the transmission shaft 21 rotates accordingly, thereby driving the transmission shaft 21 to rotate and providing power for the operation of the subsequent drive gear 24, driven gear 23, and grooving cutter 26.

[0041] More specifically, to address special weight-reduction requirements such as fan blade imbalance, the two moving stations of the dual-station electric slide table independently drive vertical module one 42 and vertical module two 15. Vertical module one 42 and vertical module two 15 are arranged parallel to each other, and can achieve precise alignment by driving horizontal frame one 6 and horizontal frame two 17 through their respective lifting parts one 5 and two 16. When it is necessary to reduce weight at symmetrical positions of the fan blades, the two stations can move to the symmetrical positions synchronously or stepwise. Drive mechanism two 25 drives the transmission shaft 21 to rotate, so that the driving gear 24 meshes with the driven gear 23 to drive the cutter shaft 22 to rotate. The grooving cutter 26 then cuts the fan blades with the cutting edge 19. The short bushing 201 and the long bushing 202 ensure stable transmission of the drive shaft 21. The cavity 18 provides protection and support for the internal gears and the cutter shaft 22. This structure retains the original processing function and can achieve symmetrical synchronous weight removal through dual-station collaboration, effectively offsetting the even imbalance. At the same time, the grooving cutter 26, together with the original grinding wheel 73 and the cutting structure 12, forms a variety of processing methods to meet the special weight removal requirements of fan blades of different specifications and materials, greatly improving the versatility and weight removal accuracy of the device, and ensuring better dynamic balance of the fan blades.

[0042] In addition, refer to Figure 4 and Figure 5As shown, in the aforementioned embodiment, only one grooving cutter 26 is provided, corresponding to the cutting edge 19 and extending beyond the outside of the cutting edge 19. Moreover, the width of the grooving cutter 26 is fixed, making it impossible to change the cutter according to the different grooving widths required on the inner circumference of the fan blade. This makes it difficult to meet the diverse grooving requirements of the fan blade. To solve the above problems, in this embodiment, the cavity component 18 is a disc-shaped hollow structure. The number of cutting edges 19 is multiple and they are distributed around the center of the cavity component 18 as an axis. The number of cutter shafts 22 is multiple, and the number of grooving cutters 26 is multiple and they are installed on the multiple cutter shafts 22. Furthermore, the multiple cutter shafts 22 are all around the drive shaft 21, and the multiple grooving cutters 26 correspond one-to-one with the multiple cutting edges 19. The width of the multiple grooving cutters 26 gradually increases. The transverse frame 217 is equipped with a tool changer motor 311. The output shaft of the tool changer motor 311 is parallel to the transmission shaft 21. The output shaft of the tool changer motor 311 and the long shaft sleeve 202 are both fixedly fitted with transmission wheels 212. The two transmission wheels 212 are connected by an annular flexible transmission component 213. Specifically, the cavity component 18 is designed as a disc-shaped hollow structure, with multiple cutting edges 19 distributed around its periphery, corresponding to multiple cutting shafts 22 and grooving cutters 26 with progressively increasing widths. That is, each grooving cutter 26 has a different width, resulting in different grooving widths for the fan blades. When a tool change is required based on the grooving width requirement of the inner circumference of the fan blade, the tool changer motor 311 operates. Its output shaft drives the long shaft sleeve 202 to rotate via the transmission wheel 312 and the annular flexible transmission component 313. This causes the cavity component 18 to rotate around the central axis, aligning the grooving tool 26 of the corresponding width with the processing position of the fan blade. At the same time, the drive mechanism 25 drives the transmission shaft 21 to rotate. Through the engagement of the drive gear 24 and the driven gear 23, the tool shaft 22 drives the grooving tool 26 to rotate and cut. This design, by using multiple grooving tools 26 of different widths to rotate and change tools, can meet the diverse grooving width requirements of the fan blade without stopping the machine for manual replacement. This not only improves the tool changing efficiency but also expands the adaptability of the device to different specifications of fan blades, ensuring that the grooving operation more accurately matches the fan blade weight reduction requirements, further enhancing the practicality and processing flexibility of the device.

[0043] Reference Figure 7As shown, considering that after the clamping component 2 fixes the fan blade in the aforementioned embodiment, it is difficult to drive the fan blade to rotate, when it is necessary to slot and reduce weight at different circumferential positions of the fan blade, it is necessary to adjust the position of the slotting mechanism 7 to adapt, which is cumbersome. Moreover, for some circumferentially distributed slotting positions, the adjustment accuracy is difficult to guarantee. In order to solve the above problems, this embodiment improves the clamping component 2 and related structures as follows: the base 1 is a cavity structure, the clamping component 2 is a pneumatic chuck, the pneumatic chuck has a fixing part, a rotating part and a clamping part, the fixing part is fixed on the base 1, and the fixing part is the non-rotating part of the pneumatic chuck. The rotating part rotatably extends into the interior of the base 1. The clamping part is located on the rotating part. The clamping part is the part that clamps the object. The rotating part is the part where the pneumatic chuck can drive the clamping part and the clamped object to rotate. A transmission wheel 271 is fixedly sleeved on the rotating part. Specifically, a transmission wheel 271 is fixedly sleeved on one end of the rotating part that extends into the interior of the base 1. An adjustment motor 273 is installed inside the base 1. A transmission wheel 272 is installed on the output shaft of the adjustment motor 273. A ring-shaped flexible transmission component 274 is connected between the transmission wheel 271 and the transmission wheel 272.

[0044] Specifically, the base 1, as a cavity structure, provides installation space for various components. The clamping component 2 adopts a pneumatic clamping plate, and its fixing part is fixed on the base 1 to ensure overall stability. The clamping part can firmly clamp the fan blade. When it is necessary to slot and de-weight the fan blade at different circumferential positions, the adjustment motor 273 inside the base 1 operates, and its output shaft drives the transmission wheel 272 to rotate. Through the annular flexible transmission component 274, the transmission wheel 271 on the rotating part rotates accordingly, thereby driving the rotating part and the clamped fan blade to rotate, realizing the adjustment of the circumferential position of the fan blade. There is no need to frequently adjust the position of the grooving mechanism 7. This design solves the problem that the original clamping component 2 is difficult to drive the fan blade to rotate, resulting in cumbersome operation. It makes the adjustment of the circumferentially distributed grooving position more convenient, and the motor drive can ensure the accuracy of the rotation angle, ensuring the accuracy of the grooving position, improving the efficiency and quality of the fan blade de-weighting operation, and enhancing the adaptability of the device to different circumferential grooving requirements.

[0045] In addition, an annular angle indicator 28 is provided at the end of the rotating part away from the transmission wheel 271. Multiple handles 29 are arranged around the outer circumference of the annular angle indicator 28. The function of the annular angle indicator 28 is to intuitively display the angle at which the rotating part drives the fan blade to rotate. The operator can clearly understand the current circumferential position of the fan blade by observing the angle scale on the indicator, which makes it easy to accurately control the rotation angle when the adjustment motor 273 drives the rotation or when manually adjusting, so as to ensure that the slotted position of the fan blade meets the requirements. Multiple handles 29 are arranged around the outer circumference of the annular angle indicator disk 28. The handles 29 facilitate manual adjustment of the rotating part. When manual fine-tuning is required or in special circumstances such as failure of the adjustment motor 273, the operator can hold the handles 29 and rotate the annular angle indicator disk 28, thereby driving the rotating part, clamping part and fan blade to rotate, thereby adjusting the circumferential position of the fan blade, improving the adaptability and ease of operation of the device in different working scenarios.

[0046] In addition, a cabinet is installed at the bottom of the base 1 to house electronic components and circuits.

[0047] In the description of this specification, the references to terms such as "embodiment," "one implementation," "some implementations," "illustrative implementation," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the described implementation or example is included in at least one implementation or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same implementation or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more implementations or examples.

[0048] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the invention and should not be construed as limiting the scope of protection of the invention in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of the invention without inventive effort, and these equivalent variations or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A fan blade weight-reducing and balancing device, comprising: The base (1), the clamping component (2) disposed on the base (1), and the frame (3) are characterized in that: the frame (3) is provided with an adjustment mechanism; The adjustment mechanism is provided with a horizontal moving frame (6), and the horizontal moving frame (6) is movably connected to a slotting mechanism (7). The slotting mechanism (7) can be in a vertical state or an inclined state. The horizontal moving frame (6) is provided with an angle adjustment mechanism (8) for driving the slotting mechanism (7) to move between the vertical state and the inclined state. The grooving mechanism (7) includes an adjusting frame (71), a rotating shaft (72), a grinding wheel (73), and a drive mechanism (75). The adjusting frame (71) is movably installed inside the transverse frame (6). The rotating shaft (72) is rotatably connected to the adjusting frame (71). The grinding wheel (73) is fixedly sleeved on the rotating shaft (72). The drive mechanism (75) is set on the adjusting frame (71) and is used to drive the rotating shaft (72) to rotate. The rotating shaft (72) is a tubular structure. An electric push rod (9) is provided on the adjusting frame (71). A connecting plate (10) is provided at the telescopic end of the electric push rod (9). The connecting plate (10) is rotatably connected to a slotted shaft (11) whose other end extends into the interior of the rotating shaft (72). A cutting structure (12) is provided at the end of the slotted shaft (11) away from the connecting plate (10). A limiting structure (13) is provided between the slotted shaft (11) and the rotating shaft (72). The limiting structure (13) can restrict the slotted shaft (11) from rotating around the axis relative to the rotating shaft (72) and does not restrict the slotted shaft (11) from sliding along the axial direction of the rotating shaft (72).

2. The fan blade weight-reducing and balancing device according to claim 1, characterized in that, The adjustment mechanism includes a horizontal module (41), a vertical module (42), and a lifting part (5). The horizontal module (41) is disposed on the frame (3), the vertical module (42) is disposed on the horizontal module (41), the moving direction of the horizontal module (41) is perpendicular to the moving direction of the vertical module (42), the lifting part (5) is disposed on the vertical module (42), and the end of the lifting part (5) away from the vertical module (42) is connected to the horizontal moving frame (6).

3. The fan blade weight-reducing and balancing device according to claim 2, characterized in that, The horizontal module (41) is a dual-station electric slide. One moving station of the dual-station electric slide is connected to the vertical module one (42), and the other moving station is equipped with a vertical module two (15). The length of the vertical module one (42) is parallel to the length direction of the vertical module two (15). The moving end of the vertical module two (15) is equipped with a lifting part two (16). The end of the lifting part two (16) away from the vertical module two (15) is equipped with a transverse frame two (17). The transverse frame two (17) is equipped with a cavity part (18) inside. The periphery of the cavity part (18) is provided with a cutting edge (19). The two ends of the transverse frame two (17) are respectively rotatably connected with a short bushing (201) and a long bushing (202). The opposite ends of the short bushing (201) and the long bushing (202) are fixedly connected to the center of the cavity part (18). The short bushing (201) and the long bushing (202) are rotatably connected by a drive shaft (21) that passes through the center of the cavity (18), with one end of the drive shaft (21) extending out of the short bushing (201); a cutter shaft (22) is rotatably connected inside the cavity (18), the cutter shaft (22) is parallel to the drive shaft (21), the cutter shaft (22) is provided with a driven gear (23), and the drive shaft (21) is fixedly fitted with a drive gear (24) located inside the cavity (18) and meshing with the driven gear (23); the transverse frame II (17) is provided with a drive mechanism II (25) for driving the drive shaft (21) to rotate; the cutter shaft (22) is equipped with a grooving cutter (26), one end of the grooving cutter (26) is aligned with the cutting edge (19) and extends out of the outside of the cutting edge (19).

4. The fan blade weight-reducing and balancing device according to claim 3, characterized in that, The second drive mechanism (25) includes a drive motor (251), a transmission wheel (252), and an annular flexible transmission component (253). The drive motor (251) is mounted on the second transverse frame (17). The output shaft of the drive motor (251) and the end of the transmission shaft (21) that passes through the short bushing (201) are both provided with a transmission wheel (252). The two transmission wheels (252) are connected by the annular flexible transmission component (253).

5. A fan blade weight-reducing and balancing device according to claim 3, characterized in that, The cavity component (18) is a disc-shaped hollow structure. There are multiple cutting edges (19) that are distributed around the center of the cavity component (18). There are multiple cutting shafts (22). There are multiple grooving cutters (26) that are installed on multiple cutting shafts (22). The multiple grooving cutters (26) correspond to the multiple cutting edges (19) one by one, and the width of the multiple grooving cutters (26) gradually increases.

6. A fan blade weight-reducing and balancing device according to claim 3, characterized in that, The transverse frame 2 (17) is equipped with a tool changer motor (311). The output shaft of the tool changer motor (311) is parallel to the transmission shaft (21). The output shaft of the tool changer motor (311) and the long shaft sleeve (202) are both fixedly fitted with transmission wheels 2 (312). The two transmission wheels 2 (312) are connected by a ring flexible transmission component 2 (313).

7. A fan blade weight-reducing and balancing device according to claim 1, characterized in that, The drive mechanism 1 (75) includes a drive shaft (751), a sprocket 1 (752), a sprocket 2 (753), a chain (754), and a motor 1 (755). The drive shaft (751) is rotatably connected to the adjustment frame (71). The drive shaft (751) is parallel to the rotating shaft (72). The motor 1 (755) is mounted on the adjustment frame (71). The output shaft of the motor 1 (755) is coaxially connected to one end of the drive shaft (751). The sprocket 1 (752) is fixedly mounted on the drive shaft (751). The sprocket 2 (753) is fixedly mounted on the rotating shaft (72). The sprocket 1 (752) and the sprocket 2 (753) are connected by the chain (754).

8. The fan blade weight-reducing and balancing device according to claim 1, characterized in that, The angle adjustment mechanism (8) includes a rotating shaft (81), a worm wheel (82), a worm (83), a connecting seat (84), and a second motor (85). The rotating shaft (81) is rotatably connected to the inner wall of the first transverse frame (6). The upper end of the adjustment frame (71) is fixedly connected to the rotating shaft (81). Both ends of the worm (83) are mounted on the first transverse frame (6) through the connecting seat (84). The second motor (85) is provided on the connecting seat (84). The output shaft of the second motor (85) is coaxially connected to the worm (83). The worm wheel (82) is fixedly sleeved on the rotating shaft (81). The worm wheel (82) meshes with the worm (83).

9. A fan blade weight-reducing and balancing device according to claim 1, characterized in that, The limiting structure (13) includes a bushing (131), a slider (132), and a groove (133); the groove (133) is disposed on the inner circumferential surface of the rotating shaft (72), and the groove (133) extends along the length direction of the rotating shaft (72); the bushing (131) is fixedly sleeved on the slotted shaft (11), the slider (132) is disposed on the bushing (131), and one end of the slider (132) away from the bushing (131) is embedded in the groove (133).

10. A fan blade weight-reducing and balancing device according to claim 1, characterized in that, The base (1) is a cavity structure, and the clamping component (2) is a pneumatic clamping plate. The pneumatic clamping plate has a fixed part, a rotating part and a clamping part. The fixed part is fixed on the base (1), and the clamping part is the part for clamping objects. The rotating part can rotatably penetrate into the interior of the base (1). The clamping part is set on the rotating part. A transmission wheel three (271) is fixedly sleeved on the rotating part. An adjustment motor (273) is set inside the base (1). A transmission wheel four (272) is set on the output shaft of the adjustment motor (273). A ring flexible transmission component three (274) is connected between the transmission wheel three (271) and the transmission wheel four (272).

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