Axial flow fan blade machining equipment and using method

Abstract

The invention relates to the technical field of fan blade machining, in particular to axial flow fan blade machining equipment and a using method, the axial flow fan blade machining equipment comprises a punching table, and a drilling machine controlled by a mechanical arm is arranged on one side of the punching table. According to the axial flow fan blade machining equipment and the using method, by means of the characteristics of high-speed solidification and low-speed fluidization of non-Newtonian fluid, a drill bit rotating at a high speed is inserted into the non-Newtonian fluid in the connecting cup during drilling, so that the non-Newtonian fluid is solidified instantly to form rigid connection, and then the clamping table is driven to rotate synchronously; and when the fan blades rotate to the position below the magnetic frame along with the clamping table, the drill bit is pulled away to enable the non-Newtonian fluid to recover the flow state, the clamping table rotates under the action of the reset spring, and the magnetic frame synchronously attracts and takes out the fan blades. According to the design, detection elements such as an additional sensor are not needed, the drilling completion state can be accurately judged through structural mechanical characteristics, the workpiece taking action is synchronously triggered, the manual intervention link is reduced, and the machining continuity and efficiency are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of fan blade processing technology, specifically to a fan blade processing equipment and its usage method for axial flow fans. Background Technology

[0002] As the core power component of an axial flow fan, the machining accuracy of the fan blades directly determines the fan's aerodynamic performance, operational stability, and service life. In the fan blade machining process, the drilling process near the rotor connection end is a critical step. Typically, a central hole and two side holes need to be machined on a single fan blade to meet the subsequent riveting and assembly requirements with the rotor. Currently, the industry mostly uses a four-axis drilling machine with conventional fixtures to complete this process. However, the inventors discovered that traditional equipment has many technical defects in the process of developing existing machining equipment, which seriously restricts processing efficiency and product quality.

[0003] First, the drilling process lacks a coordinated protection and process verification mechanism. Due to the curved structure of the blades, the drill bit experiences uneven stress on both sides when drilling on curved surfaces, making it prone to skewing. Furthermore, the lack of stable support in the drilling area further exacerbates the risk of blade deformation, leading to a decline in drilling quality. More importantly, existing equipment lacks an effective processing flow verification design. If operators neglect to process side holes, blades with incomplete hole machining may still flow into subsequent assembly stages, causing assembly mismatch and increasing rework costs.

[0004] Secondly, the processing continuity is poor and the cost of manual intervention is high. After drilling, traditional equipment requires manual removal of the parts, which not only prolongs the processing cycle but may also cause secondary damage to the fan blades due to improper operation during the removal process. At the same time, the reset of each component of the equipment after drilling requires manual adjustment and cannot achieve automatic reset cycle, resulting in long standby time of the equipment, difficulty in improving production efficiency, and inability to adapt to the needs of large-scale mass production.

[0005] In view of this, we propose an axial flow fan blade processing equipment and its usage method. Summary of the Invention

[0006] The purpose of this invention is to provide an axial flow fan blade processing device and its usage method to solve the problems of lack of process verification and poor processing continuity mentioned in the background art. To achieve the above objective, this invention provides the following technical solution: an axial flow fan blade processing device, including a drilling table, and a drilling machine controlled by a robotic arm is provided on one side of the drilling table. A clamping table is rotatably provided on the drilling table and reset by a return spring. The clamping table has an inclined groove for placing the fan blade, and a limiting buckle for locking the fan blade is provided at the lower part of the inclined groove.

[0007] A connecting cup is provided on the top of the punching platform corresponding to the punching position of the fan blade, and a non-Newtonian fluid is placed inside the connecting cup.

[0008] A magnetic frame is fixedly installed on one side of the drilling table, and the magnetic frame extends to the upper side of the clamping table for tilting and sucking out the fan blades inside the limiting buckle.

[0009] Preferably, the top of the clamping table is provided with a groove, and a rotating sleeve is rotatably arranged in the groove. Two retaining rings are fixedly arranged in the rotating sleeve. The connecting cup is movably arranged between the two retaining rings. A tension spring is provided at the bottom of the groove to connect with the bottom of the connecting cup, and the tension spring keeps the connecting cup in the center position by tension.

[0010] The bottom of the connecting cup is provided with a protrusion, and the lower retaining ring is provided with a track for the protrusion to move. When the connecting cup rotates eccentrically, the protrusion moves in the track, and when the connecting cup rotates around the center, the protrusion is stuck in the track.

[0011] The retaining ring is provided with a through groove, and a connecting frame is provided in the groove by being pushed upward by a spring. When the connecting frame moves upward, it is inserted into the through groove to connect the rotating sleeve with the clamping table.

[0012] A stop bar is slidably connected in the through groove to block the upward movement of the connecting frame. When the connecting cup rotates eccentrically, it pushes the stop bar to move and releases the restriction on the connecting frame.

[0013] Preferably, an electromagnet is provided on the inner wall of the rotating sleeve to cooperate with the stop bar, which is used to push the stop bar to reset. The bottom end of the stop bar and the top end of the connecting frame are provided with oblique openings, and the stop bar pushes the connecting frame to move down and reset through the oblique openings.

[0014] Preferably, the inner sidewall of the connecting cup is provided with annular grooves, which are spaced apart along the axial direction of the connecting cup.

[0015] Preferably, the inner bottom of the connecting cup is provided with radial protrusions, which extend outward from the center of the connecting cup.

[0016] Preferably, the bottom of the magnetic frame is provided with an adjustable height seat, and the adjustable seat is threadedly connected to the magnetic frame.

[0017] Preferably, the magnetic frame has an arc-shaped adsorption surface on the side near the clamping table, the arc-shaped adsorption surface is adapted to the rotation trajectory of the clamping table, and the surface of the arc-shaped adsorption surface is provided with magnetic adsorption enhancement strips.

[0018] A method for using an axial flow fan blade processing equipment includes the following steps:

[0019] S1. Place the axial flow fan blade to be processed into the inclined groove of the clamping table. The fan blade slides down the inclined groove under gravity until it is locked by the limit buckle at the bottom of the inclined groove, thus completing the axial and circumferential positioning of the fan blade. At this time, the preset drilling position of the fan blade (side holes on both sides + center hole) is coaxially aligned with the connecting cup at the top of the drilling table.

[0020] S2. The robotic arm controls the drilling machine to move to the processing position of the side hole on one side of the fan blade, starts the drilling machine, and the drill bit rotates at high speed to drill through the side hole on one side of the fan blade. Then the drill bit continues to move down and insert into the non-Newtonian fluid in the connecting cup. The non-Newtonian fluid solidifies instantly under the impact of the high-speed drill bit, forming a rigid connection with the drill bit and the connecting cup. The rotational force of the drill bit drives the connecting cup to rotate eccentrically on one side. The protrusion at the bottom of the connecting cup moves along the track of the lower retaining ring, and simultaneously pushes the corresponding side retaining strip to move laterally, releasing the partial restriction of the connecting frame by the side retaining strip. Similarly, the robotic arm drives the drilling machine to move to the processing position of the side hole on the other side of the fan blade, repeats the above drilling action, and the connecting cup rotates eccentrically on the other side, pushing the other side retaining strip to move laterally, completely releasing the restriction of the connecting frame. The connecting frame moves up under the thrust of the bottom spring and inserts into the through groove of the rotating sleeve, realizing the rigid connection between the rotating sleeve and the clamping table.

[0021] S3. The robotic arm moves the drilling machine to the processing position of the central hole of the fan blade. The drilling machine is started, and the drill bit rotates at high speed to drill through the central hole of the fan blade. After drilling, it is inserted into the non-Newtonian fluid in the connecting cup again. The solidified non-Newtonian fluid drives the connecting cup to rotate around the center. At this time, the protrusion is stuck in the track. The connecting cup drives the clamping table to rotate synchronously through the rotating sleeve. The return spring is twisted and stores force. The clamping table drives the fan blade to rotate towards the magnetic frame side.

[0022] S4. When the clamping table rotates to the bottom of the magnetic frame, the magnetic force generated by the magnetic frame passes through the top of the clamping table and attracts the machined fan blade inside the limit buckle. The fan blade is then pulled out of the limit buckle and detached from the clamping table (automatic part removal is completed). Subsequently, the robotic arm controls the drilling machine to pull upward, the drill bit is separated from the non-Newtonian fluid, the non-Newtonian fluid returns to its fluid state, the connecting cup is reset to the center position under the tension of the tension spring, and the clamping table rotates in the opposite direction under the rebound force of the return spring, returning to the initial position.

[0023] S5. After the clamping table is reset, the electromagnet is activated. The electromagnet generates magnetic force to push the side bars to move in the opposite direction and reset. The side bars cooperate with the inclined opening at the top of the connecting frame through the inclined opening at the top of the top, squeezing the connecting frame to move downward. The connecting frame disengages from the through groove of the rotating sleeve and returns to the initial limit state.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] In this invention, leveraging the "high-speed solidification, low-speed fluidization" characteristics of non-Newtonian fluids, a high-speed rotating drill bit inserts into the non-Newtonian fluid within the connecting cup during drilling, causing it to solidify instantly and form a rigid connection. This, in turn, drives the clamping platform to rotate synchronously. Once the fan blades have rotated to below the magnetic frame, the drill bit is withdrawn, allowing the non-Newtonian fluid to return to its fluid state. The clamping platform then rotates under the action of a return spring, and the magnetic frame simultaneously attracts and removes the fan blades. This design eliminates the need for additional sensors or other detection components, accurately determining the drilling completion status through structural mechanical properties and synchronously triggering the part removal action. This reduces manual intervention and significantly improves processing continuity and efficiency.

[0026] In this invention, the equipment features a progressive linkage structure for unlocking side hole processing and driving center hole processing: First, the side holes on both sides must be processed, causing the drill bit to drive the connecting cup to rotate eccentrically, pushing the stop bar to release the limiting position on the connecting frame, ensuring the connecting frame moves upward to achieve a rigid connection between the rotating sleeve and the clamping table. Only after this unlocking process is completed can the connecting cup drive the clamping table to rotate and remove the part during center hole processing. If the side hole processing is not completed according to the procedure, the connecting frame remains in a limited position, and the clamping table cannot rotate to remove the part, forming a natural process verification barrier and structurally eliminating the quality risks of missed holes.

[0027] In this invention, a fully automated reset process is achieved through multi-structure collaboration: after the drill bit is withdrawn, the connecting cup resets to its centered position under the tension of a spring; the clamping table returns to its initial position via a return spring; after the clamping table resets, an electromagnet drives the stop bar to reset, and the stop bar, with the aid of a beveled joint, presses the connecting frame downwards, releasing the rotating sleeve from the clamping table. Each structure precisely coordinates its mechanical properties with electromagnetic control, enabling rapid restoration of the initial processing state without manual operation. This ensures the stability of continuous cyclic processing, reduces manual debugging costs, and adapts to the needs of large-scale production. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0029] Figure 2 This is a three-dimensional sectional view of the clamping platform of the present invention;

[0030] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0031] Figure 4 For the present invention Figure 2 Enlarged view of point B in the middle;

[0032] Figure 5 This is an exploded view of the groove and rotating sleeve of the present invention;

[0033] Figure 6 This is a three-dimensional structural cross-sectional view of the rotating sleeve and retaining ring of the present invention;

[0034] Figure 7 The explosion of the connecting cup, retaining ring and connecting frame of the present invention Figure 1 ;

[0035] Figure 8 The explosion of the connecting cup, retaining ring and connecting frame of the present invention Figure 2 ;

[0036] Figure 9 This is a three-dimensional structural cross-sectional view of the retaining ring and retaining strip of the present invention;

[0037] Figure 10 This is a schematic diagram of the punching platform and return spring of the present invention.

[0038] In the diagram: 1. Drilling table; 2. Drilling machine; 3. Return spring; 4. Clamping table; 5. Angled groove; 6. Limit buckle; 7. Connecting cup; 8. Magnetic frame; 9. Groove; 10. Rotating sleeve; 11. Retaining ring; 12. Tension spring; 13. Protrusion; 14. Track; 15. Through groove; 16. Spring; 17. Connecting frame; 18. Stop bar; 19. Electromagnet; 20. Angled opening. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Please see Figures 1 to 10 The present invention provides a technical solution: an axial flow fan blade processing equipment, including a drilling table 1, and a drilling machine 2 controlled by a robotic arm is provided on one side of the drilling table 1. The robotic arm can drive the drilling machine 2 to move precisely to the fan blade to be processed position, ensuring the accuracy and stability of the drilling action.

[0041] The punching table 1 is equipped with a clamping table 4 that is reset by a return spring 3. After the clamping table 4 completes the rotation and picks up the part, the return spring 3 can automatically drive it back to the initial processing position without manual intervention, thus improving the continuity of processing.

[0042] Furthermore, the clamping table 4 is provided with an inclined groove 5 for placing the fan blades. The inclined groove 5 can guide the fan blades to return to their positions automatically with the help of gravity, simplifying the loading operation. A limit buckle 6 is provided at the lower position of the inclined groove 5 to hold the fan blades. The limit buckle 6 can achieve dual positioning of the fan blades in the axial and circumferential directions, ensuring that the fan blades will not be displaced during drilling and ensuring processing accuracy.

[0043] A connecting cup 7 is provided on the top of the drilling table 1 corresponding to the drilling position of the fan blade. The connecting cup 7 can serve as a container for non-Newtonian fluids and at the same time provide a stable working reference for the drill bit.

[0044] Furthermore, the connecting cup 7 contains a non-Newtonian fluid. Under the shearing action of the high-speed rotation of the drill bit, the non-Newtonian fluid will solidify instantly to form a rigid connection structure, thereby transmitting the rotational force of the drill bit to the connecting cup 7. When the drill bit stops rotating, the non-Newtonian fluid can return to its flow state, which facilitates the reset of each component and realizes the core function of "rigid transmission during rotation and flexible reset after stopping".

[0045] A magnetic frame 8 is fixedly installed on one side of the punching table 1. The magnetic frame 8 can provide a continuous and stable adsorption force, and the magnetic frame 8 extends to the upper side of the clamping table 4 for tilting and sucking out the fan blade in the limit buckle 6. The tilting adsorption method can make the force direction of the fan blade form an angle with the clamping direction of the limit buckle 6, making it easier to overcome the clamping force and release from the limit buckle 6. At the same time, it avoids the fan blade from colliding or deforming during the part removal process, improving the safety and reliability of part removal.

[0046] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, the top of the clamping platform 4 is provided with a groove 9, which can provide installation space for components such as the rotating sleeve 10 and the tension spring 12, forming a hidden structure and reducing external interference.

[0047] Furthermore, a rotating sleeve 10 is rotatably installed inside the groove 9. The rotating sleeve 10 can serve as a transmission medium between the connecting cup 7 and the clamping table 4, thereby realizing the transmission of force.

[0048] Two retaining rings 11 are fixedly installed inside the rotating sleeve 10. The two retaining rings 11 can limit the axial position of the connecting cup 7 and prevent the connecting cup 7 from moving in the vertical direction.

[0049] The connecting cup 7 is movably positioned between the two retaining rings 11, enabling the connecting cup 7 to achieve both eccentric rotation and central rotation, while maintaining a stable axial position.

[0050] The bottom of the groove 9 is provided with a tension spring 12 that connects to the bottom of the connecting cup 7. The tension spring 12 keeps the connecting cup 7 in the center position by pulling force. After the connecting cup 7 completes the eccentric rotation, the tension spring 12 can automatically pull it back to the center position to prepare for the next processing and ensure that the connecting cup 7 can be accurately aligned with the fan blade drilling position during each processing.

[0051] The bottom of the connecting cup 7 is provided with a protrusion 13, which can serve as a transmission contact between the connecting cup 7 and the track 14.

[0052] The lower retaining ring 11 is provided with a track 14 for the protrusion 13 to move. The track 14 can guide the movement of the protrusion 13 and limit the movement trajectory of the connecting cup 7.

[0053] When the connecting cup 7 rotates eccentrically, the protrusion 13 moves within the track 14. At this time, the protrusion 13 slides along the arc section of the track 14, causing the connecting cup 7 to achieve eccentric action, thereby pushing the stop bar 18 to move.

[0054] Furthermore, when the connecting cup 7 rotates around the center, the protrusion 13 is locked in the track 14. The slot structure of the track 14 can form a rigid engagement with the protrusion 13, so that the rotational force of the connecting cup 7 can be transmitted to the retaining ring 11 through the protrusion 13, and then transmitted to the clamping table 4 through the rotating sleeve 10, so as to realize the synchronous rotation of the clamping table 4 and provide power for the fan blade to move to the bottom of the magnetic frame 8.

[0055] The retaining ring 11 has a through groove 15, which can be used as an insertion interface for the connecting bracket 17.

[0056] A connecting bracket 17 is provided in the groove 9 and is pushed upward by a spring 16. The spring 16 can provide a continuous upward pushing force to the connecting bracket 17, ensuring that the connecting bracket 17 can be quickly inserted into the through groove 15 after the limit is released.

[0057] When the connecting frame 17 moves upward, it inserts into the through slot 15 to connect the rotating sleeve 10 with the clamping table 4. The connecting frame 17 can achieve a rigid connection between the rotating sleeve 10 and the clamping table 4, so that the rotational power of the rotating sleeve 10 can be directly transmitted to the clamping table 4, driving the clamping table 4 to rotate.

[0058] A stop bar 18 is slidably connected in the through groove 15 to block the upward movement of the connecting frame 17. The stop bar 18 can limit the connecting frame 17 in the initial state to prevent the connecting frame 17 from accidentally moving upward and causing the rotating sleeve 10 to connect with the clamping table 4 prematurely.

[0059] When the connecting cup 7 rotates eccentrically, it pushes the stop bar 18 to move, releasing the limit on the connecting frame 17. The eccentric action of the connecting cup 7 realizes the automatic unlocking of the stop bar 18. No additional drive mechanism is required, which simplifies the control logic and realizes the linkage effect of "drilling action triggering unlock".

[0060] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, an electromagnet 19 is provided on the inner wall of the rotating sleeve 10 to cooperate with the stop bar 18. The electromagnet 19 is used to push the stop bar 18 to reset. After the processing is completed, the electromagnet 19 can generate magnetic force by being energized, which can quickly push the stop bar 18 back to the initial limit position, ensuring that the equipment can quickly return to the initial state and improve processing efficiency.

[0061] The bottom end of the baffle 18 and the top end of the connecting frame 17 are provided with an oblique opening 20. The oblique opening 20 can convert the horizontal reset force of the baffle 18 into the downward pressure of the connecting frame 17. The baffle 18 pushes the connecting frame 17 to move down and reset through the oblique opening 20, realizing the linkage between the reset of the baffle 18 and the reset of the connecting frame 17. There is no need to control the downward movement of the connecting frame 17 separately, which further simplifies the reset process of the equipment and ensures the synchronicity and accuracy of the reset of each component.

[0062] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, the inner wall of the connecting cup 7 is provided with annular grooves, which are spaced apart along the axial direction of the connecting cup 7. After the non-Newtonian fluid solidifies at high speed, it will embed into the gaps of the annular grooves, forming a "groove interlocking" structure. This prevents the solidified fluid from sliding relative to the inner wall of the connecting cup 7, i.e., "slippage". The axially spaced design can form multiple sets of interlocking points in the height direction of the connecting cup 7, dispersing the torque transmitted by the drill bit, reducing local stress concentration, and further improving the rigid connection effect between the connecting cup 7 and the non-Newtonian fluid. This ensures that the drill bit can stably drive the connecting cup 7 and the subsequent linkage clamping table 4 to rotate synchronously when rotating, avoiding processing deviations or part removal failures caused by loose connections.

[0063] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, the inner bottom of the connecting cup 7 is provided with radial ridges. These ridges extend outward from the center of the connecting cup 7. The radial ridges increase the contact area and friction between the non-Newtonian fluid and the bottom of the connecting cup 7. The solidified fluid and the ridges form a "radial force structure," allowing the rotational torque transmitted by the drill bit to be quickly and evenly transferred to the entire connecting cup 7. The radial extension of the ridges creates a perpendicular force relationship with the drill bit's rotation direction (circumferential direction), effectively resisting the shear force caused by the torque and preventing the solidified fluid from detaching from the bottom of the connecting cup 7. This ensures that the connecting cup 7 can drive the clamping table 4 to rotate smoothly during the machining of the central hole, providing power for the precise movement of the fan blades to the magnetic frame 8 for part removal.

[0064] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10As shown, the bottom of the magnetic frame 8 is equipped with an adjustable height seat, which is threadedly connected to the magnetic frame 8. By rotating the adjustable seat (the threaded connection allows for height adjustment), the vertical distance between the magnetic frame 8 and the clamping table 4 can be flexibly adjusted: for thicker fan blades, the height of the magnetic frame 8 is increased to avoid interference. For thinner fan blades, the height of the magnetic frame 8 is decreased to enhance the adsorption force, ensuring that fan blades of different specifications can be stably adsorbed. The threaded connection structure has self-locking properties, and the height is fixed after adjustment, preventing the magnetic frame 8 from shifting during processing, which could lead to insufficient adsorption force or damage to the fan blades due to collision. This improves the equipment's adaptability to multiple fan blade models and reduces changeover and adjustment costs.

[0065] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, the magnetic frame 8 has an arc-shaped adsorption surface on the side near the clamping table 4. The arc-shaped adsorption surface is adapted to the rotation trajectory of the clamping table 4, and the surface of the arc-shaped adsorption surface is provided with magnetic attraction reinforcement strips. The adaptation of the arc-shaped adsorption surface to the rotation trajectory of the clamping table 4 allows the fan blade to enter the magnetic adsorption range in advance when the clamping table 4 rotates. During the adsorption process, the distance between the fan blade and the magnetic frame 8 remains consistent, forming a "uniform adsorption throughout" effect, avoiding insufficient local adsorption force that could cause the fan blade to fall off. The magnetic attraction reinforcement strips (such as high magnetic permeability materials or dense magnetic strips) can further enhance the local magnetic field strength. Even if there is a small gap between the fan blade and the magnetic frame 8, sufficient adsorption force can still be generated to overcome the clamping force of the limit buckle 6, ensuring that the fan blade can quickly and smoothly detach from the limit buckle 6, avoiding the fan blade from getting stuck or scratched during removal.

[0066] A method for using an axial flow fan blade processing equipment includes the following steps:

[0067] S1. Place the axial flow fan blade to be processed into the inclined groove 5 of the clamping table 4. The fan blade slides down the inclined groove 5 under gravity until it is locked by the limit buckle 6 at the lower position of the inclined groove 5, thus completing the axial and circumferential positioning of the fan blade. At this time, the preset drilling position of the fan blade (side holes on both sides + center hole) is coaxially aligned with the connecting cup 7 at the top of the drilling table 1.

[0068] S2. The robotic arm controls the drilling machine 2 to move to the processing position of the side hole on one side of the fan blade. The drilling machine 2 is started, and the drill bit rotates at high speed and drills through the side hole on one side of the fan blade. Then the drill bit continues to move down and inserts into the non-Newtonian fluid in the connecting cup 7. The non-Newtonian fluid solidifies instantly under the impact of the high-speed drill bit, forming a rigid connection with the drill bit and the connecting cup 7. The rotational force of the drill bit causes the connecting cup 7 to rotate eccentrically on one side. The protrusion 13 at the bottom of the connecting cup 7 moves along the track 14 of the lower retaining ring 11, simultaneously pushing the corresponding side retaining strip 18 to move laterally, releasing the partial restriction of the side retaining strip 18 on the connecting frame 17. Similarly, the robotic arm drives the drilling machine 2 to move to the processing position of the side hole on the other side of the fan blade, repeating the above drilling action. The connecting cup 7 rotates eccentrically on the other side, pushing the other side retaining strip 18 to move laterally, completely releasing the restriction on the connecting frame 17. The connecting frame 17 moves upward under the thrust of the bottom spring 16 and inserts into the through groove 15 of the rotating sleeve 10, thereby achieving a rigid connection between the rotating sleeve 10 and the clamping table 4.

[0069] S3. The robotic arm moves the drilling machine 2 to the machining position of the central hole of the fan blade. The drilling machine 2 is started, and the drill bit rotates at high speed to drill through the central hole of the fan blade. After drilling, it is inserted into the non-Newtonian fluid in the connecting cup 7 again. The solidified non-Newtonian fluid drives the connecting cup 7 to rotate around the center. At this time, the protrusion 13 is stuck in the track 14. The connecting cup 7 drives the clamping table 4 to rotate synchronously through the rotating sleeve 10. The return spring 3 is twisted and stored. The clamping table 4 drives the fan blade to rotate towards the magnetic frame 8.

[0070] S4. When the clamping table 4 rotates to below the magnetic frame 8, the magnetic force generated by the magnetic frame 8 passes through the top of the clamping table 4, attracting the machined fan blade inside the limit buckle 6, pulling the fan blade out of the limit buckle 6 and detaching it from the clamping table 4, completing the automatic part removal. Subsequently, the robotic arm controls the drilling machine 2 to pull upward, the drill bit is separated from the non-Newtonian fluid, the non-Newtonian fluid returns to its fluid state, the connecting cup 7 is reset to the center position under the tension of the tension spring 12, and the clamping table 4 rotates in the opposite direction under the rebound force of the return spring 3, returning to the initial working position.

[0071] S5. After the clamping table 4 is reset, the electromagnet 19 is activated. The electromagnet 19 generates magnetic force to push the side stops 18 to move in the opposite direction and reset. The stops 18 cooperate with the top of the connecting frame 17 through the top of the inclined opening 20, pressing the connecting frame 17 to move downward. The connecting frame 17 disengages from the through groove 15 of the rotating sleeve 10 and returns to the initial limit state.

[0072] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A processing equipment for axial flow fan blades, characterized in that: Includes a drilling table (1), a drilling machine (2) controlled by a robotic arm is provided on one side of the drilling table (1), a clamping table (4) is rotatably provided on the drilling table (1) and reset by a return spring (3), the clamping table (4) is provided with a sloping groove (5) for placing the fan blade, and a limiting buckle (6) for locking the fan blade is provided at the lower position of the sloping groove (5). The top of the punching station (1) is provided with a connecting cup (7) corresponding to the punching position of the fan blade, and the connecting cup (7) is filled with non-Newtonian fluid. A magnetic frame (8) is fixedly provided on one side of the drilling table (1). The magnetic frame (8) extends to the upper side of the clamping table (4) and is used to suck out the fan blade inside the limiting buckle (6).

2. The axial flow fan blade processing equipment according to claim 1, characterized in that: The clamping platform (4) has a groove (9) on its top. A rotating sleeve (10) is rotatably provided in the groove (9). Two retaining rings (11) are fixed in the rotating sleeve (10). The connecting cup (7) is movably provided between the two retaining rings (11). A tension spring (12) is provided at the bottom of the groove (9) and connected to the bottom of the connecting cup (7). The tension spring (12) keeps the connecting cup (7) in the center by tension. The bottom of the connecting cup (7) is provided with a protrusion (13), and the lower retaining ring (11) is provided with a track (14) for the protrusion (13) to move. When the connecting cup (7) rotates eccentrically, the protrusion (13) moves along the track (14). When the center of the connecting cup (7) rotates, the protrusion (13) is stuck in the track (14). The retaining ring (11) has a through groove (15), and the groove (9) has a connecting frame (17) that is pushed upward by a spring (16). When the connecting frame (17) moves upward, it is inserted into the through groove (15) to connect the rotating sleeve (10) and the clamping table (4). A baffle (18) is slidably connected in the through groove (15) to prevent the connecting frame (17) from moving upward. When the connecting cup (7) rotates eccentrically, it pushes the baffle (18) to move and releases the limit on the connecting frame (17).

3. The axial flow fan blade processing equipment according to claim 2, characterized in that: The inner wall of the rotating sleeve (10) is provided with an electromagnet (19) that cooperates with the stop bar (18) to push the stop bar (18) to reset; the bottom end of the stop bar (18) and the top end of the connecting frame (17) are both provided with a slanted opening (20), and the stop bar (18) pushes the connecting frame (17) to move down and reset through the slanted opening (20).

4. The axial flow fan blade processing equipment according to claim 1, characterized in that: The inner wall of the connecting cup (7) is provided with annular grooves and convex grooves spaced apart along its axial direction.

5. The axial flow fan blade processing equipment according to claim 1, characterized in that: The inner bottom of the connecting cup (7) is provided with radial protrusions extending outward from its center.

6. The axial flow fan blade processing equipment according to claim 1, characterized in that: The bottom of the magnetic frame (8) is provided with an adjustment seat, which is threadedly connected to the magnetic frame (8) to adjust the height of the magnetic frame (8).

7. The axial flow fan blade processing equipment according to claim 1, characterized in that: The magnetic frame (8) has an arc-shaped adsorption surface on the side near the clamping table (4). The arc-shaped adsorption surface is adapted to the rotation trajectory of the clamping table (4). The surface of the arc-shaped adsorption surface is provided with magnetic adsorption enhancement strips.

8. A method of using an axial flow fan blade processing equipment, comprising using the axial flow fan blade processing equipment as described in claim 3, characterized in that, Includes the following steps: S1. Place the fan blade to be processed into the inclined groove (5) of the clamping table (4). The fan blade slides down the inclined groove (5) until it is locked and positioned by the limit buckle (6). At this time, the processing positions of the side holes on both sides and the center hole of the fan blade are aligned with the connecting cup (7) on the same axis. S2. The robotic arm drives the drilling machine (2) to drill through the side holes on both sides of the fan blade in sequence. The drill bit is inserted into the connecting cup (7) to solidify the non-Newtonian fluid. The connecting cup (7) is driven to rotate eccentrically on both sides in sequence, pushing the side stops (18) to displace and release the limit on the connecting frame (17). The connecting frame (17) moves up and inserts into the through groove (15) to connect the rotating sleeve (10) and the clamping table (4). S3. The drilling machine (2) drills through the central hole of the fan blade. The drill bit solidifies the non-Newtonian fluid again, causing the center of the connecting cup (7) to rotate. The protrusion (13) is stuck in the track (14). The connecting cup (7) drives the clamping table (4) to rotate through the rotating sleeve (10). The fan blade moves towards the magnetic frame (8). S4. The clamping table (4) rotates to the bottom of the magnetic frame (8), the magnetic frame (8) attracts the fan blade and makes it disengage from the limit buckle (6); after the drill bit is pulled out, the non-Newtonian fluid returns to its flow state, and the connecting cup (7) and the clamping table (4) are reset by the tension spring (12) and the reset spring (3) respectively. S5. The electromagnet (19) is activated to push the stop bar (18) to reset. The stop bar (18) pushes the connecting frame (17) down through the inclined hole (20) to disengage from the through slot (15), and the equipment returns to its initial state.

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