Milling device for machining generator blade

Abstract

The milling device comprises a workbench and a positioning plate, the positioning plate is fixed to the right side of the upper end face of the workbench, and an adjusting mechanism is installed on the lower end face of the workbench. According to the milling device for machining the generator blade, when the generator blade is placed, a fixing rod is in a transverse state at the moment, space is reserved for facilitating placement of the generator blade, and when the generator blade is fixed, the left end face of a movable frame is moved to be aligned with a positioning plate through the action of a first motor and a first threaded rod; at the moment, a mounting plate rotates by 90 degrees under the action of a first spring, a cross rod, a convex tooth rod and a transmission gear, so that a pressing plate is located above a workpiece normally, a protective pad is in contact with a generator blade under the action of a first air cylinder, and angle adjustment of the pressing plate and the protective pad can be achieved under the action of rotation between a ball shaft and a mounting base; therefore, the blade fixing device is convenient and simple to operate.

Description

Technical Field

[0001] The invention relates to the technical field of generator blade processing, and in particular to a milling device for generator blade processing. Background Art

[0002] Wind turbines use wind power to drive the blades to rotate, and then use a speed increaser to increase the speed of rotation to enable the generator to generate electricity. The materials used to make wind turbine blades are generally high-strength metal materials, which have the characteristics of large size and heavy weight.

[0003] During the production process of wind turbine blades, it is necessary to process their surfaces through a milling device. In order to ensure the stability of the generator blades during the processing, the existing milling device is more troublesome in limiting and fixing the generator blades during the processing of the generator blades, which greatly affects the processing efficiency. Therefore, in view of the above problems, a milling device for generator blade processing is designed to better meet the actual use needs. Summary of the invention

[0004] The object of the present invention is to provide a milling device for machining generator blades to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a milling cutting device for processing generator blades, comprising a workbench and a positioning plate, a positioning plate is fixed on the right side of the upper end surface of the workbench, an adjusting mechanism is installed on the lower end surface of the workbench, a positioning mechanism is connected to the workbench bearing, a first motor is fixed on the right end of the workbench, a first threaded rod is fixed on the output end of the first motor, the first threaded rod bearing is connected to the workbench, the first threaded rod is connected to the movable frame through a thread, the adjusting mechanism comprises a fixed plate, a convex tooth rod, a transmission gear, a cross bar, a first spring and a shift plate, a convex tooth rod is fixed symmetrically on the fixed plate front and back, the convex tooth rod and the transmission gear are meshedly connected, and the convex tooth rod and the workbench are slidably connected, a cross bar is fixed on the right end of the fixed plate, and the cross bar and the workbench are slidably connected, a first spring is also fixed between the cross bar and the workbench, a shift plate is fixed on the right end of the cross bar, and the shift plate is arranged on the right side of the movable frame, The cam is secured to the bottom of the workbench and is provided with a first spring, wherein the first spring and the second spring are engaged with the first and second gears and the gears ...

[0006] Preferably, the mounting plates are evenly spaced on the workbench, and the mounting plates rotate 90° each time. By rotating the mounting plates, the position of the pressure plate can be adjusted, thereby facilitating loading and unloading of generator blades and improving the convenience of device operation.

[0007] Preferably, the movable frame is slidably connected to the guide rod, and the guide rod is symmetrically fixed on the workbench front and back. When the movable frame is forced to move, the sliding guiding effect between the movable frame and the guide rod can ensure the stability of the movement of the movable frame.

[0008] Preferably, a second motor is fixed on the movable frame, and a second threaded rod is fixed on the output end of the second motor, and the second threaded rod bearing is connected to the movable frame, and the second threaded rod is connected to the movable block through a thread, and a milling mechanism is installed on the movable block. Through the above structure, the front and rear positions of the milling mechanism can be adjusted to ensure normal processing.

[0009] Preferably, the movable block is slidably connected to the limiting rod, and the limiting rod is fixed on the movable frame symmetrically. When the movable block moves, the sliding guide effect between the movable block and the limiting rod can ensure that the movable block can make stable linear movement.

[0010] Preferably, the milling mechanism includes a second cylinder, a base plate, a third motor, a milling cutter and a driving gear. The second cylinder is fixed to the lower end surface of the movable block, and the output end of the second cylinder is fixed with the base plate, and a grinding mechanism is installed on the base plate. At the same time, a third motor is fixed at the lower end of the base plate, and a milling cutter is fixed at the output end of the third motor. Through the above structure, the height of the milling cutter can be adjusted to meet actual processing needs.

[0011] Preferably, a driving gear is fixed to the output end of the third motor, and the driving gear is located above the milling cutter. Through the action of the third motor, a basic force can be provided for the rotation of the driving gear and the milling cutter.

[0012] Preferably, the grinding mechanism includes a movable plate, a sliding rod, a second spring, a rotating shaft, a driven gear, a disc, a ball bearing and a grinding pad. The movable plate is arranged at an equal angle below the base plate, and a sliding rod is fixed to the base plate, and the sliding rod and the base plate are slidably connected. A second spring is also fixed between the movable plate and the base plate. When the movable plate is moved under force, the sliding action between the sliding rod and the base plate can ensure the stability of the movement of the movable plate, and the elastic action of the second spring can ensure that there is a certain force between the grinding pad and the workpiece, thereby ensuring the grinding and polishing effect.

[0013] Preferably, the lower end surface bearing of the movable plate is connected to the rotating shaft, and a driven gear is fixed on the rotating shaft, and the driven gear and the driving gear are meshingly connected. At the same time, the thickness of the driven gear is greater than the thickness of the driving gear. Through the meshing transmission effect between the driven gear and the driving gear, a basic force can be provided for the rotation of the rotating shaft, thereby ensuring the normal operation of the device.

[0014] Preferably, a disc is fixed on the lower end face of the rotating shaft, and a rollable ball is connected to the lower end face of the disc at an equal angle, and a grinding pad is fixed on the lower end face of the disc, and the grinding pad is 0.5mm-1mm lower than the lower end face of the ball. The diameter of the grinding pad is larger than the diameter of the milling cutter. Through the action of the ball, the normal movement of the grinding pad can be guaranteed, and the normal grinding and polishing of the workpiece can be guaranteed.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The milling device for processing generator blades, when placing the generator blades, the fixing rod is in a horizontal state, leaving space for convenient placement of the generator blades. When fixing the generator blades, the left end surface of the movable frame is moved to align with the positioning plate through the action of the first motor and the first threaded rod. At this time, the first spring, the crossbar, the convex tooth rod and the transmission gear are cooperated to rotate the mounting plate 90 degrees, so that the pressure plate is normally located above the workpiece, and then the first cylinder is cooperated to make the protective pad contact with the generator blades. The rotation between the ball shaft and the mounting seat can realize the angle adjustment of the pressure plate and the protective pad, so as to adapt to the fixing of the generator blades, and the operation is convenient and simple;

[0017] 2. The milling device for processing generator blades can realize left and right movement of the milling cutter through the first motor, the first threaded rod and the movable frame when processing the generator blades. The second motor, the second threaded rod and the movable block can realize forward and backward movement of the milling cutter. The second cylinder can realize height adjustment of the milling cutter, thereby realizing multi-directional adjustment of the milling cutter, so as to better meet the processing requirements of the generator blades;

[0018] 3. The milling device for processing generator blades can adjust the height of the grinding pad through the elastic action of the slide bar and the second spring when processing the generator blades. In combination with the action of the ball, it can not only ensure the normal movement of the grinding pad, but also limit the force exerted by the grinding pad on the generator blades to ensure the grinding effect. In combination with the transmission action between the driven gear and the driving gear, it can provide a basic force for the rotation of the grinding pad, thereby processing the burrs on the surface of the generator blades after milling, thereby ensuring the processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the device of the present invention;

[0020] Figure 2 It is a schematic diagram of the overall three-dimensional structure of the device of the present invention when viewed from above;

[0021] Figure 3 It is a schematic diagram of a side-view stereoscopic structure of the adjusting mechanism and the positioning mechanism of the present invention;

[0022] Figure 4 It is a schematic diagram of the exploded three-dimensional structure of the positioning mechanism of the present invention;

[0023] Figure 5 It is a schematic diagram of a cross-sectional three-dimensional structure of the movable frame of the present invention;

[0024] Figure 6 It is a schematic diagram of the front view of the three-dimensional structure of the milling mechanism and the grinding mechanism of the present invention;

[0025] Figure 7 It is a bottom-up stereoscopic structural schematic diagram of the milling mechanism and the grinding mechanism of the present invention.

[0026] In the figure: 1, workbench; 2, positioning plate; 3, adjustment mechanism; 301, fixing plate; 302, convex tooth rod; 303, transmission gear; 304, cross bar; 305, first spring; 306, paddle; 4, positioning mechanism; 401, mounting plate; 402, fixing rod; 403, slider; 404, first cylinder; 405, mounting seat; 406, pressure plate; 407, ball shaft; 408, protective pad; 5, first motor; 6, first threaded rod; 7, movable frame; 701, The second motor; 702, the second threaded rod; 703, the movable block; 704, the limit rod; 8, the guide rod; 9, the milling mechanism; 901, the second cylinder; 902, the bottom plate; 903, the third motor; 904, the milling cutter; 905, the driving gear; 10, the grinding mechanism; 1001, the movable plate; 1002, the sliding rod; 1003, the second spring; 1004, the rotating shaft; 1005, the driven gear; 1006, the disc; 1007, the ball bearing; 1008, the grinding pad. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-Figure 7The present invention provides a technical solution: a milling device for processing generator blades, including a workbench 1 and a positioning plate 2, the positioning plate 2 is fixed to the right side of the upper end surface of the workbench 1, the adjusting mechanism 3 is installed on the lower end surface of the workbench 1, the workbench 1 is bearing-connected with the positioning mechanism 4, the first motor 5 is fixed to the right end of the workbench 1, the output end of the first motor 5 is fixed with a first threaded rod 6, the first threaded rod 6 is bearing-connected to the workbench 1, the first threaded rod 6 is connected to the movable frame 7 through threads, the adjusting mechanism 3 includes a fixing plate 301, a convex tooth rod 302, a transmission gear 303, a cross bar 304, a first elastic The fixing plate 301 has a convex toothed rod 302 symmetrically fixed to the front and rear sides thereof, the convex toothed rod 302 is meshedly connected with the transmission gear 303, and the convex toothed rod 302 is slidably connected with the workbench 1, a cross bar 304 is fixed to the right end of the fixing plate 301, and the cross bar 304 is slidably connected with the workbench 1, a first spring 305 is also fixed between the cross bar 304 and the workbench 1, a paddle 306 is fixed to the right end of the cross bar 304, and the paddle 306 is arranged on the right side of the movable frame 7, and the positioning mechanism 4 includes a mounting plate 401, a fixing rod 402, a slider 403, a first cylinder 40 4. Mounting seat 405, pressing plate 406, ball shaft 407 and protective pad 408. The mounting plate 401 bearing is connected to the workbench 1, and the transmission gear 303 is fixed to the lower side of the mounting plate 401. A fixing rod 402 is also fixed to the mounting plate 401, and the length of the fixing rod 402 is less than half the width of the workbench 1. A slider 403 is slidably connected to the fixing rod 402, and the slider 403 and the fixing rod 402 are locked by bolts. A first cylinder 404 is also fixed to the slider 403, and a mounting seat 405 is fixed to the output end of the first cylinder 404. A pressing plate 406 is provided on the lower side of the mounting seat 405. Plate 406, a ball shaft 407 is fixed on the pressure plate 406, and the ball shaft 407 is rotatably connected in the mounting seat 405. A protective pad 408 is fixed on the lower end surface of the pressure plate 406. When the movable frame 7 moves and contacts the dial plate 306 to move the dial plate 306, the fixed plate 301 and the convex gear rod 302 are synchronously driven to move, and the transmission action between the convex gear rod 302 and the transmission gear 303 is coordinated to make the mounting plate 401 rotate forwardly under force. When the movable frame 7 is separated from the dial plate 306, the fixed plate 301 and the convex gear rod 302 are reset under the action of the first spring 305, so that the mounting plate 401 rotates in the opposite direction.

[0029] The mounting plates 401 are evenly spaced on the workbench 1, and the mounting plates 401 rotate 90° each time; the movable frame 7 is slidably connected to the guide rod 8, and the guide rod 8 is symmetrically fixed to the workbench 1 front and back;

[0030] When using the milling device for processing generator blades, Figure 1-Figure 7 As shown, at this time, the fixing rod 402 is Figure 1As shown, it is in a horizontal state, and the paddle plate 306 is in contact with the movable frame 7, and the first spring 305 is in a contracted state, so as to avoid the fixed rod 402 from hindering the placement of the generator blade. Then, the generator blade is hoisted and placed on the workbench 1 through the hoisting mechanism, and the right end of the generator blade is in contact with the positioning plate 2 to achieve positioning. After the placement is completed, the first motor 5 is started again to drive the first threaded rod 6 to rotate, and the threaded connection between the first threaded rod 6 and the movable frame 7 and the sliding action between the movable frame 7 and the guide rod 8 can make the movable frame 7 move to the left under force. , until the left end surface of the movable frame 7 is flush with the left end surface of the positioning plate 2, at this time, the first motor 5 is turned off, and when the movable frame 7 moves to the left, the elastic action of the first spring 305 makes the cross bar 304 and the convex gear rod 302 slide to the left under force, and when the left end surface of the movable frame 7 is flush with the left end surface of the positioning plate 2, the first spring 305 is completely reset, and when the convex gear rod 302 moves to the left, the meshing transmission action between the convex gear rod 302 and the transmission gear 303 can make the mounting plate 401 rotate under force, and when the first spring 305 is completely reset, the mounting plate 40 1 is rotated exactly 90°, so that the pressing plate 406 and the protective pad 408 are located directly above the workpiece, and finally the mounting seat 405, the pressing plate 406, the ball shaft 407 and the protective pad 408 are driven downward by controlling the first cylinder 404 to extend. When the protective pad 408 contacts the generator blade, the rotation between the ball shaft 407 and the mounting seat 405 can realize the adaptive adjustment of the angles of the pressing plate 406 and the protective pad 408, so as to ensure that the protective pad 408 fits the generator blade, thereby ensuring the fixing effect of the generator blade. According to the above principle, through multiple pressing plates, The functions of 406 and the protective pad 408 can ensure the stability of the generator blade fixation, and in actual operation, the front and rear positions of the pressing plate 406 and the protective pad 408 can be adjusted through the sliding action between the slider 403 and the fixing rod 402, so as to better meet the actual fixing requirements, and after the subsequent processing is completed, according to the above principle, by releasing the lock of the generator blade, when the movable frame 7 moves to the right and contacts the dial plate 306, the mounting plate 401 can be reversely rotated 90° to restore the horizontal state, thereby facilitating the lifting of the generator blade, and the operation is convenient and simple;

[0031] The movable frame 7 is also fixed with a second motor 701, and the output end of the second motor 701 is fixed with a second threaded rod 702, and the second threaded rod 702 is connected to the movable frame 7 by a bearing, and the second threaded rod 702 is connected to the movable block 703 by a thread, and the movable block 703 is installed with a milling mechanism 9; the movable block 703 is slidably connected with the limit rod 704, and the limit rod 704 is fixed to the movable frame 7 symmetrically; the milling mechanism 9 includes a second cylinder 901, a base plate 902, a third motor 903, a milling mechanism 9, and a plurality of movable blocks 703. The second cylinder 901 is fixed to the lower end surface of the movable block 703, and the output end of the second cylinder 901 is fixed with a bottom plate 902, and a grinding mechanism 10 is installed on the bottom plate 902. At the same time, a third motor 903 is fixed to the lower end of the bottom plate 902, and a milling cutter 904 is fixed to the output end of the third motor 903; a driving gear 905 is also fixed to the output end of the third motor 903, and the driving gear 905 is located above the milling cutter 904; the grinding mechanism 10 includes a movable plate 1001, a slide bar 1002, The second spring 1003, the rotating shaft 1004, the driven gear 1005, the disc 1006, the ball 1007 and the grinding pad 1008, and the movable plate 1001 are arranged at equal angles below the bottom plate 902, and the sliding rod 1002 is fixed on the bottom plate 902, and the sliding rod 1002 and the bottom plate 902 are slidably connected, and the second spring 1003 is also fixed between the movable plate 1001 and the bottom plate 902; the lower end surface bearing of the movable plate 1001 is connected to the rotating shaft 1004, and the driven gear 1007 is fixed on the rotating shaft 1004. 005, and the driven gear 1005 is meshedly connected with the driving gear 905, and the thickness of the driven gear 1005 is greater than the thickness of the driving gear 905; a disc 1006 is fixed to the lower end surface of the rotating shaft 1004, and a rolling ball 1007 is connected to the lower end surface of the disc 1006 at an equal angle, and a grinding pad 1008 is fixed to the lower end surface of the disc 1006, and the grinding pad 1008 is 0.5mm-1mm lower than the lower end surface of the ball 1007, and the diameter of the grinding pad 1008 is greater than the diameter of the milling cutter 904;

[0032] During use of the device, if Figure 1-Figure 7As shown, after the generator blades are fixed, the left and right position adjustment of the milling cutter 904 can be achieved through the threaded connection between the first threaded rod 6 and the movable frame 7 and the sliding action between the movable frame 7 and the guide rod 8. The front and rear positions of the milling cutter 904 can be adjusted by cooperating with the threaded connection between the second threaded rod 702 and the movable block 703 and the sliding action between the movable block 703 and the limiting rod 704. The height of the milling cutter 904 can be adjusted by cooperating with the action of the second cylinder 901 to meet the milling processing requirements of the generator blades. When the second cylinder 901 extends to drive the milling cutter 904 to move downward, The third motor 903 is started synchronously, and the third motor 903 drives the milling cutter 904 and the driving gear 905 to rotate, so as to ensure the normal progress of the processing. When the second cylinder 901 extends and drives the milling cutter 904 to move downward, the movable plate 1001, the slide bar 1002, the second spring 1003, the rotating shaft 1004, the driven gear 1005, the disc 1006, the ball 1007 and the grinding pad 1008 are synchronously driven to move downward. When the grinding pad 1008 contacts the workpiece, the grinding pad 1008 is relatively soft and can be deformed until the ball 1007 contacts the generator blade. At this time, the milling cutter 90 4 is just above the generator blade, and the milling cutter 904 can be brought into contact with the generator blade to achieve milling processing by extending the second cylinder 901. At this time, the ball 1007, the grinding pad 1008 and the disc 1006 move a certain distance relative to the bottom plate 902, and the sliding guide between the slide bar 1002 and the bottom plate 902 can ensure the stability of the movement of the ball 1007, the grinding pad 1008 and the disc 1006. At this time, the second spring 1003 is forced to shrink, and the elastic effect of the second spring 1003 can keep the grinding pad 1008 in contact with the generator blade. When 04 moves left and right or forward and backward, it can synchronously drive the ball 1007 and the grinding pad 1008 to move. The contact and rolling action of the ball 1007 and the generator blade can ensure the normal movement of the grinding pad 1008. Combined with the meshing transmission action between the driven gear 1005 and the driving gear 905, the grinding pad 1008 can rotate synchronously with the milling cutter 904. The grinding pad 1008 can grind the path surface after the milling cutter 904 is milled, thereby ensuring that the surface of the generator blade is smooth after processing and avoiding the generation of burrs. This is the working principle of the milling cutting device for generator blade processing.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A milling device for processing generator blades, comprising a workbench (1) and a positioning plate (2), wherein the positioning plate (2) is fixed to the right side of the upper end surface of the workbench (1), characterized in that: The lower end surface of the workbench (1) is provided with an adjustment mechanism (3), the workbench (1) is bearing-connected with a positioning mechanism (4), a first motor (5) is fixed to the upper right end of the workbench (1), a first threaded rod (6) is fixed to the output end of the first motor (5), the first threaded rod (6) is bearing-connected to the workbench (1), the first threaded rod (6) is connected to the movable frame (7) through threads, the adjustment mechanism (3) comprises a fixed plate (301), a convex tooth rod (302), a transmission gear (303), a cross rod (304), a first spring (305 ) and a shift plate (306), a convex toothed rod (302) is fixed to the fixed plate (301) symmetrically in front and back, the convex toothed rod (302) and the transmission gear (303) are meshingly connected, and the convex toothed rod (302) and the workbench (1) are slidably connected, a cross bar (304) is fixed to the right end of the fixed plate (301), and the cross bar (304) and the workbench (1) are slidably connected, a first spring (305) is also fixed between the cross bar (304) and the workbench (1), a shift plate (306) is fixed to the right end of the cross bar (304), and the shift plate (3 06) is arranged on the right side of the movable frame (7), the positioning mechanism (4) includes a mounting plate (401), a fixing rod (402), a slider (403), a first cylinder (404), a mounting seat (405), a pressure plate (406), a ball shaft (407) and a protective pad (408), the mounting plate (401) is connected to the workbench (1) by a bearing, and a transmission gear (303) is fixed on the lower side of the mounting plate (401), and a fixing rod (402) is also fixed on the mounting plate (401), and the length of the fixing rod (402) is less than half the width of the workbench (1), so The fixed rod (402) is slidably connected with a slider (403), and the slider (403) and the fixed rod (402) are locked by bolts. The slider (403) is also fixed with a first cylinder (404), and a mounting seat (405) is fixed to the output end of the first cylinder (404). A pressure plate (406) is arranged at the lower side of the mounting seat (405), and a ball shaft (407) is fixed to the pressure plate (406). The ball shaft (407) is rotatably connected in the mounting seat (405), and a protective pad (408) is fixed to the lower end surface of the pressure plate (406).

2. A milling device for machining generator blades according to claim 1, characterized in that: The mounting plates (401) are distributed at equal intervals on the workbench (1), and the mounting plates (401) rotate at an angle of 90° each time.

3. A milling device for machining generator blades according to claim 1, characterized in that: The movable frame (7) and the guide rod (8) are slidably connected, and the guide rod (8) is symmetrically fixed on the workbench (1) in front and back directions.

4. A milling device for machining generator blades according to claim 1, characterized in that: A second motor (701) is also fixed on the movable frame (7), and a second threaded rod (702) is fixed to the output end of the second motor (701), and the second threaded rod (702) is bearing-connected to the movable frame (7), and the second threaded rod (702) is connected to the movable block (703) via threads, and a milling mechanism (9) is installed on the movable block (703).

5. A milling device for machining generator blades according to claim 4, characterized in that: The movable block (703) and the limiting rod (704) are slidably connected, and the limiting rod (704) is fixed on the movable frame (7) symmetrically.

6. A milling device for machining generator blades according to claim 4, characterized in that: The milling mechanism (9) comprises a second cylinder (901), a base plate (902), a third motor (903), a milling cutter (904) and a driving gear (905); the second cylinder (901) is fixed to the lower end surface of the movable block (703); the base plate (902) is fixed to the output end of the second cylinder (901); a grinding mechanism (10) is installed on the base plate (902); the third motor (903) is fixed to the lower end of the base plate (902); and the milling cutter (904) is fixed to the output end of the third motor (903).

7. A milling device for machining generator blades according to claim 6, characterized in that: A driving gear (905) is also fixed to the output end of the third motor (903), and the driving gear (905) is located above the milling cutter (904).

8. A milling device for machining generator blades according to claim 6, characterized in that: The grinding mechanism (10) comprises a movable plate (1001), a sliding rod (1002), a second spring (1003), a rotating shaft (1004), a driven gear (1005), a disc (1006), a ball bearing (1007) and a grinding pad (1008); the movable plate (1001) is arranged at an equal angle below the bottom plate (902); the sliding rod (1002) is fixed on the bottom plate (902); the sliding rod (1002) and the bottom plate (902) are slidably connected; and the second spring (1003) is also fixed between the movable plate (1001) and the bottom plate (902).

9. A milling device for machining generator blades according to claim 8, characterized in that: The lower end surface bearing of the movable plate (1001) is connected to the rotating shaft (1004), and a driven gear (1005) is fixed on the rotating shaft (1004), and the driven gear (1005) is meshedly connected with the driving gear (905), and the thickness of the driven gear (1005) is greater than the thickness of the driving gear (905).

10. A milling device for machining generator blades according to claim 8, characterized in that: A disc (1006) is fixed to the lower end surface of the rotating shaft (1004), and a rollable ball (1007) is connected to the lower end surface of the disc (1006) at an equal angle, and a grinding pad (1008) is fixed to the lower end surface of the disc (1006), and the grinding pad (1008) is 0.5 mm-1 mm lower than the lower end surface of the ball (1007), and the diameter of the grinding pad (1008) is greater than the diameter of the milling cutter (904).

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