A fan blade polishing device

Abstract

The present invention belongs to the field of mechanical polishing, and specifically is a fan blade polishing device, including a convex grinding mechanism, a concave grinding mechanism, an equipment base and a fan-shaped fixing mechanism. In order to solve the technical problem of insufficient polishing of the blade surface, a combined polishing method is adopted, a convex grinding mechanism and a concave grinding mechanism are set, and the concave and convex surfaces of the blade are polished at the same time, which can ensure that the surface treatment is more comprehensive and meticulous, and the two polishing methods are carried out simultaneously, which improves the polishing accuracy while effectively shortening the overall polishing time, greatly improving production efficiency; a combined cooling method of air cooling and self-cooling is adopted, and the excellent thermal conductivity of metal is utilized to cool the blade through the cooling system to achieve self-cooling and cooling. At the same time, a negative pressure environment is formed in the polishing outer cover by using a G-type outer ring and a cooling fan, and the polishing place is cooled by absorbing external air to achieve the technical effect of continuous cooling of the polishing area, which solves the technical problem of blade defects caused by untimely blade polishing and cooling.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical polishing, and in particular relates to a fan blade polishing device. Background Art

[0002] During the manufacturing process of wind turbine blades, the rigid skeleton components will leave traces of drilling and cutting when assembled, which will produce a large number of burrs and jagged defects. If these burrs are not removed, the shape and strength of the blades will be affected. Therefore, deburring is a critical step. Specific implementation method: Use a vibration grinder or pneumatic tool, select a suitable tool, remove burrs, and be careful not to damage the blade surface.

[0003] The traditional grinding method is manual grinding using a grinder. The central area cannot be cooled down in time. The friction between the tools and materials used in the polishing process is too large, and the heat generated cannot be dissipated in time, resulting in reduced strength, toughness and hardness of the material. The blade material undergoes thermal expansion or deformation, causing microcracks, which may develop into serious structural defects after long-term use. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a fan blade polishing device. In order to solve the technical problem of insufficient polishing of the blade surface, a combined polishing method is adopted, and a convex grinding mechanism and a concave grinding mechanism are set. The concave and convex surfaces of the blade are polished at the same time, which can ensure that the surface treatment of the blade is more comprehensive and meticulous, and the two polishing methods are carried out simultaneously, which improves the polishing accuracy while effectively shortening the overall polishing time, greatly improving the processing efficiency; in order to solve the technical problem that the temperature cannot be cooled down in time during polishing, a combined cooling method of air cooling and self-cooling is adopted, and the excellent thermal conductivity of metal is utilized to cool the blade through a cooling system to achieve self-cooling. At the same time, a G-type outer ring and a cooling fan are used to form a negative pressure environment in the polishing outer cover, and the polishing area is cooled by absorbing external air to achieve the technical effect of continuous cooling of the polishing area, thereby solving the technical problem of blade defects caused by untimely cooling of blade polishing.

[0005] The technical solution adopted by the present invention is as follows: The present invention provides a fan blade polishing device, including a convex surface grinding mechanism, a concave surface grinding mechanism, an equipment base and a fan-shaped fixing mechanism, the convex surface grinding mechanism is arranged on the equipment base, the concave surface grinding mechanism is arranged above the convex surface grinding mechanism, the fan-shaped fixing mechanism is arranged on the equipment base, the fan-shaped fixing mechanism is arranged on one side of the convex surface grinding mechanism, the convex surface grinding mechanism is used to grind the convex surface of the blade, the concave surface grinding mechanism is used to grind the concave surface of the blade, and the fan-shaped fixing mechanism is used to fix and move the blade.

[0006] Wherein, the convex surface grinding mechanism includes a lifting device and a lower layer grinding device, the lifting device is arranged above the equipment base, and the lower layer grinding device is arranged above the lifting device.

[0007] Furthermore, the lifting device includes a lifting base, a lifting arm, a limiting arm, a carrying base and a lifting control cylinder. The lifting base is arranged on the equipment base, the lower end of the lifting arm is slidably arranged in the lifting base, the lower end of the limiting arm is rotatably arranged on the lifting base, the carrying base is slidably connected to the upper end of the limiting arm, the carrying base is rotatably connected to the upper end of the lifting arm, the lifting control cylinder is arranged on the lifting base, the telescopic end of the lifting control cylinder is movably connected to the lower end of the lifting arm, and the lifting arm is rotatably connected to the limiting arm.

[0008] Furthermore, the lower layer grinding device includes a lower layer frame, a main rotating wheel, a secondary rotating wheel, a locking base and an electromagnet, the lower layer frame is arranged on the lifting device, the main rotating wheel is rotatably arranged on the lower layer frame, the secondary rotating wheel is rotatably arranged on the lower layer frame, the locking base is arranged on the lower layer frame, and the electromagnet is arranged on the locking base.

[0009] Furthermore, a symmetrical bevel base is slidably provided on the locking base, an outer rotating wheel is rotatably provided on the bevel base, and a supporting spring is provided between the symmetrical bevel bases.

[0010] Furthermore, polishing belts are connected to the outer sides of the outer rotating wheel, the main rotating wheel and the auxiliary rotating wheel.

[0011] Furthermore, the concave surface grinding mechanism includes an upper frame, an elastic grinding device and an upper unit, the upper frame is arranged on the equipment base, the elastic grinding device is arranged on the upper frame, the upper unit is arranged on the upper frame, and the upper frame is located directly above the convex surface grinding mechanism.

[0012] Among them, the elastic grinding device includes a grinding cover, a grinding transmission shaft, a connecting sleeve shaft, a fixed gear, a fixed carrying claw, a planetary rod, a grinding airbag and a planetary gear. The grinding cover is arranged on the upper frame, the connecting sleeve shaft is arranged in the grinding cover, the fixed gear is arranged on the connecting sleeve shaft, the grinding transmission shaft is rotatably connected with the connecting sleeve shaft, the fixed carrying claw is arranged at the lower end of the grinding transmission shaft, the planetary rod is rotatably arranged on the fixed carrying claw, the grinding airbag is arranged at the bottom of the planetary rod, the planetary gear is arranged at the top of the planetary rod, the planetary gear is meshed with the fixed gear, the planetary rod is composed of inner and outer shafts, and a vertical spring is arranged in the planetary rod; the electromagnet can effectively adsorb the planetary rod, so that the grinding airbag is close to the surface of the blade.

[0013] As a further preferred embodiment of the present invention, the polishing outer cover is provided with a G-type outer ring, and the G-type outer ring is provided with a cooling fan. The cooling fan can blow external inflation into the G-type outer ring, and change the direction of the airflow through the G-type outer ring to form a vertical downward airflow in the polishing outer cover. At the same time, the airflow forms a low-pressure area, and air is sucked in from above the polishing outer cover to cool the polishing area.

[0014] Furthermore, the fan-shaped fixing mechanism includes a follower slide rail, a carrying slide seat, a fan-shaped fixing device and a pushing cylinder, the follower slide rail is arranged above the equipment base, the carrying slide seat is slidably arranged on the follower slide rail, the fan-shaped fixing device is arranged above the carrying slide seat, the pushing cylinder is arranged above the equipment base, and the telescopic end of the pushing cylinder is fixedly connected to the carrying slide seat.

[0015] Among them, the fan-shaped fixing device includes a fan-shaped carrying plate, a fixed frame, a swing motor, an eccentric wheel and an eccentric slide rod, the fixed frame is arranged on the carrying slide seat, the fan-shaped carrying plate is rotatably connected to the fixed frame, the swing motor is arranged on the fixed frame, the eccentric wheel is transmission-connected to the output end of the swing motor, and the eccentric slide rod is arranged on the eccentric wheel.

[0016] Furthermore, the fan-shaped carrying plate is provided with a swinging slide groove, and the eccentric slide rod is slidably connected to the swinging slide groove, and the fan-shaped carrying plate is driven to swing by a swinging motor, thereby driving the blades to swing.

[0017] As a further preferred embodiment of the present invention, an upper clamping plate is slidably provided on the fan-shaped carrying plate, a fixed magnet is provided on the fan-shaped carrying plate, and a cooling system is provided on the upper clamping plate.

[0018] Among them, the cooling system includes an evaporation ring, a condensation ring, a capillary, a pump, a cooling fan and a cooling base. The condensation ring is arranged on the cooling base, the cooling fan is arranged above the evaporation ring, and the evaporation ring is arranged on the cooling base. One end of the evaporation ring is connected with one end of the condensation ring through a capillary, and the other end of the evaporation ring is connected with the other end of the condensation ring through a pump. The evaporation ring and the condensation ring are filled with refrigerant, and the blades are cooled by contact heat transfer and air heat transfer. The fast thermal conductivity of metal is utilized to make the blades themselves serve as a cooling medium to achieve self-cooling.

[0019] The beneficial effects achieved by the present invention using the above structure are as follows: The beneficial effects of a fan blade polishing device provided by this scheme are as follows:

[0020] (1) In order to solve the technical problem of insufficient polishing of the blade surface, a combined polishing method is adopted, and a convex surface grinding mechanism and a concave surface grinding mechanism are set up to grind the concave and convex surfaces of the blade at the same time, which can ensure a more comprehensive and detailed surface treatment. The two grinding methods are carried out simultaneously, which improves the grinding accuracy while effectively shortening the overall grinding time, greatly improving production efficiency;

[0021] (2) In order to solve the technical problem that the grinding process cannot be cooled down in time, a combined cooling method of air cooling and self-cooling is adopted. The excellent thermal conductivity of metal is utilized to cool the blades through the cooling system to achieve self-cooling. At the same time, a negative pressure environment is formed in the grinding cover by using the G-type outer ring and the cooling fan. The grinding area is cooled by absorbing external air to achieve the technical effect of continuous cooling of the grinding area, thus solving the technical problem of blade defects caused by untimely cooling of blades during grinding.

[0022] (3) Using reverse thinking, the blades are swung while the grinding equipment is stationary. A fan-shaped fixing mechanism is set up. By swinging the fan-shaped fixing device, the blades are driven to swing, thereby increasing the effective grinding area of ​​the blades, reducing the overall grinding time, and improving the grinding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of a fan blade polishing device proposed by the present invention;

[0024] Figure 2 A front view of a fan blade polishing device proposed by the present invention;

[0025] Figure 3 It is a structural schematic diagram of the convex surface grinding mechanism;

[0026] Figure 4 It is a structural schematic diagram of the lifting device;

[0027] Figure 5 It is a schematic diagram of the structure of the lower layer grinding device;

[0028] Figure 6 It is a structural schematic diagram of the concave surface grinding mechanism;

[0029] Figure 7 It is a structural schematic diagram of the elastic grinding device;

[0030] Figure 8 is a cross-sectional view of a planetary rod;

[0031] Fig. 9 It is a front view of the fan-shaped fixing mechanism;

[0032] Fig.10 It is a rear view of the fan-shaped fixing mechanism;

[0033] Fig.11It is a schematic diagram of the transmission relationship of the fan-shaped fixing device;

[0034] Fig.12 An exploded diagram of the cooling system.

[0035] Among them, 1. convex grinding mechanism, 2. concave grinding mechanism, 3. equipment base, 4. fan-shaped fixing mechanism, 101. lifting device, 102. lower grinding device, 103. lifting base, 104. lifting arm, 105. limit arm, 106. carrying base, 107. lifting control cylinder, 108. lower frame, 109. main rotating wheel, 110. auxiliary rotating wheel, 111. locking base, 112. electromagnet, 113. bevel base, 114. outer rotating wheel, 115. support spring, 116. bottom unit, 117. polishing belt, 201. upper frame, 202. elastic grinding device, 203. upper unit, 204. grinding cover, 205. grinding drive shaft, 206. connecting Connecting shaft, 207, fixed gear, 208, fixed carrying claw, 209, planetary rod, 210, grinding air bag, 211, planetary gear, 212, G-type outer ring, 213, cooling fan, 214, vertical spring, 401, follow-up slide rail, 402, carrying slide seat, 403, fan-shaped fixing device, 404, pushing cylinder, 405, fan-shaped carrying plate, 406, fixed frame, 407, swing motor, 408, eccentric wheel, 409, eccentric slide rod, 410, swing slide, 411, cooling system, 412, upper clamp, 413, fixed magnet, 414, evaporation ring, 415, condensation ring, 416, capillary, 417, pump, 418, cooling fan, 419, cooling base.

[0036] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the specific implementation modes of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0039] like Figure 1 and Figure 2 As shown, the invention provides a fan blade polishing device, including a convex surface grinding mechanism 1, a concave surface grinding mechanism 2, an equipment base 3 and a fan-shaped fixing mechanism 4, the convex surface grinding mechanism 1 is arranged on the equipment base 3, the concave surface grinding mechanism 2 is arranged above the convex surface grinding mechanism 1, the fan-shaped fixing mechanism 4 is arranged on the equipment base 3, and the fan-shaped fixing mechanism 4 is arranged on one side of the convex surface grinding mechanism 1.

[0040] like Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, the convex surface grinding mechanism 1 includes a lifting device 101 and a lower grinding device 102. The lifting device 101 is arranged above the equipment base 3, and the lower grinding device 102 is arranged above the lifting device 101; the lifting device 101 includes a lifting base 103, a lifting arm 104, a limiting arm 105, a carrying base 106 and a lifting control cylinder 107. The lifting base 103 is arranged on the equipment base 3, the lower end of the lifting arm 104 is slidably arranged in the lifting base 103, the lower end of the limiting arm 105 is rotatably arranged on the lifting base 103, the carrying base 106 is slidably connected to the upper end of the limiting arm 105, the carrying base 106 is rotatably connected to the upper end of the lifting arm 104, the lifting control cylinder 107 is arranged on the lifting base 103, and the telescopic end of the lifting control cylinder 107 is connected to the lifting arm 1 04 is movably connected at the lower end, and the lifting arm 104 is rotatably connected to the limiting arm 105; the lower grinding device 102 includes a lower frame 108, a main rotating wheel 109, an auxiliary rotating wheel 110, a locking base 111 and an electromagnet 112, the lower frame 108 is arranged on the lifting device 101, the main rotating wheel 109 is rotatably arranged on the lower frame 108, the auxiliary rotating wheel 110 is rotatably arranged on the lower frame 108, the locking base 111 is arranged on the lower frame 108, and the electromagnet 112 is arranged on the locking base 111; a symmetrical bevel base 113 is slidably provided on the locking base 111, an outer rotating wheel 114 is rotatably provided on the bevel base 113, and a support spring 115 is provided between the symmetrical bevel bases 113; a polishing belt 117 is connected to the outer side of the outer rotating wheel 114, the main rotating wheel 109 and the auxiliary rotating wheel 110.

[0041] like Figure 1 , Figure 6 , Figure 7 and Figure 8 As shown, the concave surface grinding mechanism 2 includes an upper frame 201, an elastic grinding device 202 and an upper unit 203. The upper frame 201 is arranged on the equipment base 3, the elastic grinding device 202 is arranged on the upper frame 201, and the upper unit 203 is arranged on the upper frame 201. The upper frame 201 is located directly above the convex surface grinding mechanism 1; the elastic grinding device 202 includes a grinding cover 204, a grinding transmission shaft 205, a connecting sleeve shaft 206, a fixed gear 207, a fixed mounting claw 208, a planetary rod 209, a grinding airbag 210 and a planetary gear 211. The grinding cover 204 is arranged on the upper frame 201, and the connecting sleeve shaft 206 is arranged In the grinding outer cover 204, a fixed gear 207 is arranged on the connecting sleeve shaft 206, the grinding transmission shaft 205 is rotatably connected to the connecting sleeve shaft 206, the fixed mounting claw 208 is arranged at the lower end of the grinding transmission shaft 205, the planetary rod 209 is rotatably arranged on the fixed mounting claw 208, the grinding airbag 210 is arranged at the bottom of the planetary rod 209, the planetary gear 211 is arranged at the top of the planetary rod 209, and the planetary gear 211 is meshed and connected with the fixed gear 207; a G-type outer ring 212 is arranged on the grinding outer cover 204, and a cooling fan 213 is arranged on the G-type outer ring 212; the planetary rod 209 is composed of an inner and outer shaft, and a vertical spring 214 is arranged in the planetary rod 209.

[0042] like Figure 1 , Fig. 9 , Fig.10 , Fig.11 and Fig.12As shown, the fan-shaped fixing mechanism 4 includes a follower slide 401, a carrying slide 402, a fan-shaped fixing device 403 and a pushing cylinder 404. The follower slide 401 is arranged above the equipment base 3, the carrying slide 402 is slidably arranged on the follower slide 401, the fan-shaped fixing device 403 is arranged above the carrying slide 402, the pushing cylinder 404 is arranged above the equipment base 3, and the telescopic end of the pushing cylinder 404 is fixedly connected to the carrying slide 402; the fan-shaped fixing device 403 includes a fan-shaped carrying plate 405, a fixed frame 406, a swing motor 407, an eccentric wheel 408 and an eccentric slide rod 409, the fixed frame 406 is arranged on the carrying slide 402, the fan-shaped carrying plate 405 is rotatably connected to the fixed frame 406, the swing motor 407 is arranged on the fixed frame 406, the eccentric wheel 408 is drivingly connected to the output end of the swing motor 407, and the eccentric slide rod 409 is arranged on the eccentric wheel 408; a swinging slide 410 is provided on the fan-shaped carrying plate 405, and an eccentric slide rod 409 is slidably connected with the swinging slide 410; an upper clamping plate 412 is slidably provided on the fan-shaped carrying plate 405, a fixed magnet 413 is provided on the fan-shaped carrying plate 405, and a cooling system 411 is provided on the upper clamping plate 412; the cooling system 411 includes an evaporation ring 414, a condensation ring 415, a capillary 416, a pump 417, a cooling fan 418 and a cooling base 419, the condensation ring 415 is arranged on the cooling base 419, the cooling fan 418 is arranged above the evaporation ring 414, the evaporation ring 414 is arranged on the cooling base 419, one end of the evaporation ring 414 is connected to one end of the condensation ring 415 through the capillary 416, and the other end of the evaporation ring 414 is connected to the other end of the condensation ring 415 through the pump 417, and the evaporation ring 414 and the condensation ring 415 are filled with refrigerant.

[0043] When in use, first install the fixed end of the blade on the fan-shaped fixing device 403, fix the blade to the fan-shaped carrying plate 405 through the upper clamping plate 412, and start the fixing magnet 413 at the same time, so that the upper clamping plate 412 can adsorb the fan-shaped carrying plate 405 to complete the fixation; adjust the equipment, start the pushing cylinder 404, and send the blade between the convex grinding mechanism 1 and the concave grinding mechanism 2. At this time, the lower end of the grinding airbag 210 is close to the concave surface of the blade, and the lifting control cylinder 107 is extended to drive the lifting arm 104 to rotate, and the lifting arm 104 drives the carrying base 106 to rise. During the lifting process of the carrying base 106, the polishing belt 117 is close to the convex surface of the blade. At the same time, the bevel base 113 is pulled toward the locking base 11 1 moves in the direction of the midpoint, and the support spring 115 is squeezed; start grinding, start the bottom unit 116, the bottom unit 116 drives the main rotating wheel 109 to rotate, the main rotating wheel 109 rotates and drives the polishing belt 117 to rotate, and at the same time, the polishing belt 117 rotates and drives the auxiliary rotating wheel 110 and the outer rotating wheel 114 to rotate together, and the convex surface of the blade is polished by the polishing belt 117; start the upper unit 203, the upper unit 203 drives the grinding transmission shaft 205 to rotate, the grinding transmission shaft 205 rotates and drives the fixed carrying claw 208 to rotate, the fixed carrying claw 208 rotates and drives the planetary rod 209 to rotate, and the planetary rod 209 revolves around the axis of the grinding transmission shaft 205. 207 meshing connection, the planetary gear 211 rotates to drive the planetary rod 209 to rotate, and the planetary rod 209 revolves around the grinding transmission shaft 205, so that the blade concave surface can be ground in a circular trajectory. The planetary rod 209 rotates, and the speed during grinding can be increased. During the grinding process, the cooling fan 213 is started, and the cooling fan 213 sucks in external air to form an airflow and injects it into the G-type outer ring 212. The airflow is guided by the inner wall of the G-type outer ring 212 and blown out from the opening of the G-type outer ring 212. The airflow direction is downward. Due to the Coanda effect (the fluid will deviate from the original flow direction during the flow process and change to the tendency to flow along the protruding surface of the object), the airflow is adsorbed on the inner wall of the grinding cover 204. At this time, the grinding cover The velocity of the air flow in 204 increases and the pressure decreases. At this time, the external air enters from the top of the polishing cover 204, and forms a downward cooling air flow with the internal air flow to blow toward the concave surface of the blade to cool the blade; during the polishing process, the push cylinder 404 is continuously extended to polish the blade body. During the extension of the push cylinder 404, the swing motor 407 is started, and the swing motor 407 drives the eccentric wheel 408 to rotate. The rotation of the eccentric wheel 408 drives the eccentric slide bar 409 to rotate. The rotation of the eccentric slide bar 409 drives the fan-shaped carrying plate 405 to swing. The swing of the fan-shaped carrying plate 405 drives the blade to swing. By swinging the blade, the effective contact area between the polishing airbag 210 and the polishing belt 117 and the blade is increased;During the polishing process, the pump 417 and the cooling fan 418 can be started, and the evaporation ring 414, the condensation ring 415 and the capillary 416 are used to realize the evaporation-condensation cycle of the refrigerant. The low temperature generated by the evaporation ring 414 is blown onto the blade by the cooling fan 418, and the cold air is transmitted to the entire blade by the shape of the blade itself to achieve cooling. ;

[0044] The above is the specific working process of the present invention, and you can repeat this step next time you use it.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0046] While the embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present invention.

[0047] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A fan blade polishing device, characterized in that: The invention comprises a convex surface grinding mechanism (1), a concave surface grinding mechanism (2), an equipment base (3) and a fan-shaped fixing mechanism (4), wherein the convex surface grinding mechanism (1) is arranged on the equipment base (3), the concave surface grinding mechanism (2) is arranged above the convex surface grinding mechanism (1), the fan-shaped fixing mechanism (4) is arranged on the equipment base (3), and the fan-shaped fixing mechanism (4) is arranged on one side of the convex surface grinding mechanism (1); the convex surface grinding mechanism (1) comprises a lifting device (101) and a lower layer grinding device (102), the lifting device (101) is arranged above the equipment base (3), and the lower layer grinding device (102) is arranged above the lifting device (101); the concave surface grinding mechanism (2) comprises an upper layer frame (201), an elastic grinding device (202), and a lower layer grinding device (102). 02) and an upper unit (203), the upper frame (201) being arranged on the equipment base (3), the elastic grinding device (202) being arranged on the upper frame (201), the upper unit (203) being arranged on the upper frame (201), and the upper frame (201) being located directly above the convex surface grinding mechanism (1); the fan-shaped fixing mechanism (4) comprising a follower rail (401), a carrying slide seat (402), a fan-shaped fixing device (403) and a pushing cylinder (404), the follower rail (401) being arranged above the equipment base (3), the carrying slide seat (402) being slidably arranged on the follower rail (401), the fan-shaped fixing device (403) being arranged above the carrying slide seat (402), and the pushing cylinder (404) The elastic grinding device (202) comprises a grinding cover (204), a planetary rod (209) and a grinding airbag (210), wherein the grinding airbag (210) is arranged at the bottom of the planetary rod (209), and the grinding cover (204) is provided with a G-type outer ring (212), and the G-type outer ring (212) is provided with a cooling fan (213). The cooling fan (213) inhales external air to form an airflow which is injected into the G-type outer ring (212). The airflow is guided by the inner wall of the G-type outer ring (212) and blown out from the opening of the G-type outer ring (212). The airflow direction is downward, and the pressure is reduced. The external air is blown out from the grinding cover (2 04), and forms a downward cooling airflow with the internal airflow to cool the grinding area; the fan-shaped fixing device (403) comprises a fan-shaped mounting plate (405), an upper clamping plate (412) is slidably provided on the fan-shaped mounting plate (405), and a cooling system (411) is provided on the upper clamping plate (412), and the cooling system (411) comprises an evaporation ring (414), a condensation ring (415), a capillary (416), a pump (417), a cooling fan (418) and a cooling base (419), and the cooling fan (418) is arranged above the evaporation ring (414), and the low temperature generated by the evaporation ring (414) is blown onto the blades through the cooling fan (418), and the excellent thermal conductivity of the metal is utilized to achieve self-cooling;The lower layer grinding device (102) includes an electromagnet (112), and the electromagnet (112) can effectively absorb the planet rod (209) so that the grinding airbag (210) is closely attached to the surface of the blade. ; 2. A fan blade polishing device according to claim 1, characterized in that: The lifting device (101) comprises a lifting base (103), a lifting arm (104), a limiting arm (105), a carrying base (106) and a lifting control cylinder (107); the lifting base (103) is arranged on the equipment base (3); the lower end of the lifting arm (104) is slidably arranged in the lifting base (103); the lower end of the limiting arm (105) is rotatably arranged on the lifting base (103); the carrying base (106) is slidably connected to the upper end of the limiting arm (105); the carrying base (106) is rotatably connected to the upper end of the lifting arm (104); the lifting control cylinder (107) is arranged on the lifting base (103); the telescopic end of the lifting control cylinder (107) is movably connected to the lower end of the lifting arm (104); and the lifting arm (104) is rotatably connected to the limiting arm (105).

3. A fan blade polishing device according to claim 2, characterized in that: The lower layer grinding device (102) further comprises a lower layer frame (108), a main rotating wheel (109), a secondary rotating wheel (110) and a locking base (111); the lower layer frame (108) is arranged on the lifting device (101); the main rotating wheel (109) is rotatably arranged on the lower layer frame (108); the secondary rotating wheel (110) is rotatably arranged on the lower layer frame (108); the locking base (111) is arranged on the lower layer frame (108); and the electromagnet (112) is arranged on the locking base (111).

4. A fan blade polishing device according to claim 3, characterized in that: A symmetrical bevel base (113) is slidably provided on the locking base (111), an outer rotating wheel (114) is rotatably provided on the bevel base (113), and a supporting spring (115) is provided between the symmetrical bevel bases (113).

5. A fan blade polishing device according to claim 4, characterized in that: Polishing belts (117) are connected to the outer sides of the outer rotating wheel (114), the main rotating wheel (109) and the auxiliary rotating wheel (110).

6. A fan blade polishing device according to claim 5, characterized in that: The elastic polishing device (202) further comprises a polishing transmission shaft (205), a connecting sleeve shaft (206), a fixed gear (207), a fixed mounting claw (208) and a planetary gear (211); the polishing outer cover (204) is arranged on the upper frame (201); the connecting sleeve shaft (206) is arranged in the polishing outer cover (204); the fixed gear (207) is arranged on the connecting sleeve shaft (206); the polishing transmission shaft (205) and the connecting sleeve shaft (206) are connected to each other. The fixed mounting claw (208) is rotatably connected to the grinding transmission shaft (205); the planetary rod (209) is rotatably mounted on the fixed mounting claw (208); the planetary gear (211) is disposed on the top of the planetary rod (209); the planetary gear (211) is meshedly connected to the fixed gear (207); the planetary rod (209) is composed of an inner and outer shaft; and a vertical spring (214) is disposed inside the planetary rod (209).

7. A fan blade polishing device according to claim 6, characterized in that: The fan-shaped fixing device (403) further comprises a fixing frame (406), a swing motor (407), an eccentric wheel (408) and an eccentric sliding rod (409); the fixing frame (406) is arranged on the mounting slide seat (402); the fan-shaped mounting plate (405) is rotationally connected to the fixing frame (406); the swing motor (407) is arranged on the fixing frame (406); the eccentric wheel (408) is transmission-connected to the output end of the swing motor (407); and the eccentric sliding rod (409) is arranged on the eccentric wheel (408).

8. A fan blade polishing device according to claim 7, characterized in that: The fan-shaped carrying plate (405) is provided with a swinging slide groove (410), and the eccentric slide rod (409) is slidably connected to the swinging slide groove (410); and the fan-shaped carrying plate (405) is provided with a fixed magnet (413).

9. A fan blade polishing device according to claim 8, characterized in that: The condensation ring (415) is arranged on a cooling base (419), and the evaporation ring (414) is arranged on a cooling base (419). One end of the evaporation ring (414) is connected to one end of the condensation ring (415) via a capillary (416), and the other end of the evaporation ring (414) is connected to the other end of the condensation ring (415) via a pump (417). The evaporation ring (414) and the condensation ring (415) are filled with refrigerant.

Images