Numerical control sizing arc-shaped end face milling machine for large fan blade

Abstract

The utility model discloses a numerical control sizing arc-shaped end face milling machine for a large fan blade, which comprises a machine frame lathe bed, a fan impeller provided with the fan blade, a movable working table, a milling machine table and a control panel used for controlling all electrical components, and the milling machine table is provided with a milling assembly for milling the blade. The milling assembly comprises a spiral milling cutter which is arranged at the top of the milling machine table and is used for milling the blade; a main shaft motor for driving the spiral milling cutter to rotate is arranged at the bottom of the milling machine table; a sound insulation cover covering the spiral milling cutter is arranged at the top of the milling machine table; the utility model relates to the technical field of milling machines. According to the numerical control sizing arc-shaped end face milling machine for the large fan blade, through mutual cooperation of the lifting assembly, the feeding assembly, the expansion assembly, the milling assembly and the rotating motor, the end face of the fan blade can be milled to form a certain radian in the milling process, and then the qualified fan blade can be produced.

Description

Technical Field

[0001] The utility model relates to the technical field of milling machines, in particular to a large-scale fan blade CNC fixed-length arc end face milling machine. Background Art

[0002] Wind turbine blades are one of the core components of wind turbines, accounting for about 15%-20% of the total cost of the wind turbine. The quality of its design will be directly related to the performance and benefits of the wind turbine.

[0003] Most of the existing fan blades currently have a certain curvature, so they need to be milled with a specific spiral milling cutter, and in order to facilitate processing, the fan blades usually need to be installed on a blade wheel, and then the blade wheel is fixed to facilitate milling; but in the milling process, the rotating teeth of the milling cutter generate impact milling force (that is, each tooth will generate impact when it contacts the fan blade in turn), and the teeth will continuously impact the fan blades, causing the fan blades to have tiny high-frequency vibrations, thereby causing the workpiece vibration to produce air noise, which is combined with the processing noise to form a short and strong noise, and during the processing, the staff is required to perform manual operation, which causes the staff to work in a noisy working environment for a long time, thereby causing certain damage to the health of the staff. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a CNC fixed-length arc end face milling machine for large fan blades, which solves the problem that there will be certain noise during the machining process and that workers are required to perform manual operation in this working environment, which causes workers to work in a noisy working environment for a long time, thereby causing certain damage to their health.

[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions: a large-scale fan blade CNC fixed-length arc end face milling machine, including a frame bed, a fan impeller with fan blades installed, a mobile workbench, a milling machine table and a control panel for controlling various electrical components, the milling machine table is provided with a milling assembly for milling the blades, the milling assembly includes a spiral milling cutter arranged on the top of the milling machine table for milling the blades, and the bottom of the milling machine table is provided with a spindle motor that drives the spiral milling cutter to rotate;

[0006] A soundproof cover covering the spiral milling cutter is provided on the top of the milling machine table, and an inlet and an outlet for blades to enter and exit are provided on both sides of the soundproof cover in sequence, a soundproof door opening inwards is hingedly connected to the inlet, and a cleaning plate arranged in a trapezoidal shape for cleaning the upper surface of the blade is provided at the outlet via a telescopic mechanism;

[0007] The frame bed and the movable workbench are provided with a feeding assembly for feeding the movable workbench, and the movable workbench is provided with a rotating motor, a rotating disk is provided on the output shaft of the rotating motor, and a tightening mechanism for fixing the impeller is provided on the top of the rotating disk;

[0008] The milling machine table is provided with a supporting platform for supporting blades via a lifting component.

[0009] Preferably, the telescopic mechanism includes a plurality of smooth guide rods equidistantly arranged between the cleaning plate and the sound insulation cover, the sound insulation cover is provided with a limiting sliding hole for the smooth guide rods to pass through, the smooth guide rod is provided with a limiting block with a diameter larger than the limiting sliding hole, and a telescopic spring is provided between the limiting block and the cleaning plate for the smooth guide rods to extend and retract up and down.

[0010] Preferably, a side of the cleaning plate close to the outlet is in contact with the outlet, and a soft rubber sealing pad is provided at the bottom of the cleaning plate and the soundproof door.

[0011] Preferably, the feeding assembly includes a conveyor belt arranged on the top of the frame bed, the movable workbench is installed on the conveyor belt, and a servo motor for driving the conveyor belt to rotate is provided on the frame bed.

[0012] Preferably, the tightening mechanism includes a plurality of support rods arranged on the top of the rotating disk, and a top plate is provided on the top of the plurality of support rods, and a fixing cavity for fixing the blade wheel is formed between the top plate, the support rods and the rotating disk, and a tightening cylinder arranged vertically upward is provided on the top of the rotating disk, and the tightening cylinder is provided with a pressure plate which cooperates with the top plate and contacts and tightens the blade wheel.

[0013] Preferably, the lifting assembly comprises a lifting cylinder mounted on one side of the milling machine table via a fixing frame, and the supporting platform is mounted on the telescopic end of the lifting cylinder.

[0014] Preferably, a chip box with an open top for receiving chips is provided at the bottom of the milling machine table, a chip drop port docking with the chip box is provided on the milling machine table, and a heat dissipation component for dissipating heat inside the sound insulation cover is provided between the chip box and the sound insulation cover.

[0015] Preferably, the heat dissipation assembly includes a wind hood arranged in the soundproof cover, and the air inlet end of the wind hood is provided with a heat dissipation fan for heat dissipation. The heat dissipation fan is connected to the chip collection box through a circulating air duct, and the air inlet of the circulating air duct extending into the chip collection box is provided with a metal filter for blocking debris.

[0016] Beneficial Effects

[0017] The utility model provides a large-scale fan blade CNC fixed-length arc end face milling machine. Compared with the prior art, it has the following beneficial effects:

[0018] (1) The large-scale CNC fixed-length arc end face milling machine for fan blades can mill a certain arc on the end face of the fan blade during the milling process through the cooperation between the lifting assembly, feeding assembly, tightening assembly, milling assembly and rotating motor, thereby producing qualified fan blades.

[0019] (2) The CNC fixed-length arc end face milling machine for large fan blades can reduce the noise generated during the milling process by setting up a soundproof cover, and can block the debris splashed around due to the high-speed rotation of the spiral milling cutter during the milling process, preventing the splashing debris from causing certain injuries to nearby workers, thereby improving the working environment of the workers to a certain extent.

[0020] (3) In the CNC fixed-length arc end face milling machine for large fan blades, the fan blades will exert a force on the trapezoidal cleaning plate during the forward movement, and then, with the cooperation of the smooth guide rod, the limit block and the telescopic spring, the cleaning plate will first move upward. When the fan blades pass through the outlet, the bottom of the cleaning plate will continue to contact the upper surface of the fan blade under the resistance of the telescopic spring, thereby cleaning the debris on the upper surface of the fan blade.

[0021] (4) The large-scale fan blade CNC fixed-length arc end milling machine can collect the chips in a centralized manner through the cooperation between the chip drop port and the chip collecting box. At the same time, the heat dissipation fan is set to blow air towards the spiral milling cutter, which can not only dissipate the heat of the spiral milling cutter, but also blow the chips to the chip drop port, thereby improving the efficiency of the chips falling into the chip collecting box to a certain extent; wherein, through the cooperation between the circulating air duct and the metal filter, a downward suction force can be created at the chip drop port, greatly improving the efficiency of the chips falling into the chip collecting box. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a plan view of the utility model;

[0023] Figure 2 It is a partial schematic diagram of the utility model;

[0024] Figure 3 It is a structural schematic diagram of the expansion assembly of the utility model;

[0025] Figure 4 It is a structural schematic diagram of the sound insulation cover of the utility model;

[0026] Figure 5 It is a schematic diagram of the interior of the soundproof cover of the utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the cleaning plate of the utility model;

[0028] Figure 7 It is a structural schematic diagram of the telescopic assembly of the utility model;

[0029] Figure 8 It is a schematic diagram of the structure of the circulating air duct of the utility model.

[0030] In the figure: 1. Frame bed; 2. Fan wheel; 3. Mobile workbench; 4. Milling machine table; 5. Spiral milling cutter; 6. Spindle motor; 7. Sound insulation cover; 8. Cleaning plate; 9. Rotating motor; 10. Rotating disk; 11. Support platform; 12. Smooth guide rod; 13. Limit block; 14. Telescopic spring; 15. Conveyor belt; 16. Servo motor; 17. Support rod; 18. Top plate; 19. Expansion cylinder; 20. Press plate; 21. Lifting cylinder; 22. Chip box; 23. Chip drop port; 24. Wind hood; 25. Cooling fan; 26. Circulating air duct; 27. Metal filter; 28. Control panel. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] The utility model provides two technical solutions:

[0033] Figure 1-7 The first embodiment is shown: a large-scale fan blade CNC fixed-length arc end face milling machine, comprising a frame bed 1, a fan impeller 2 with fan blades installed, a movable workbench 3, a milling machine table 4 and a control panel 28 for controlling various electrical components, a milling assembly for milling the blades is provided on the milling machine table 4, the milling assembly comprises a spiral milling cutter 5 for milling the blades arranged on the top of the milling machine table 4, and a spindle motor 6 for driving the spiral milling cutter 5 to rotate is provided at the bottom of the milling machine table 4;

[0034] A soundproof cover 7 is provided on the top of the milling machine table 4 to cover the spiral milling cutter 5, and an inlet and an outlet are provided on both sides of the soundproof cover 7 for the blades to enter and exit, a soundproof door opening inwards is hingedly connected at the inlet, and a cleaning plate 8 arranged in a trapezoidal shape for cleaning the upper surface of the blades is provided at the outlet via a telescopic mechanism;

[0035] The frame bed 1 and the mobile workbench 3 are provided with a feeding assembly for feeding the mobile workbench 3, and the mobile workbench 3 is provided with a rotating motor 9, a rotating disk 10 is provided on the output shaft of the rotating motor 9, and a tightening mechanism for fixing the fan impeller 2 is provided on the top of the rotating disk 10;

[0036] A supporting platform 11 for supporting blades is provided on the milling machine table 4 via a lifting assembly.

[0037] Among them, the telescopic mechanism includes a plurality of smooth guide rods 12 equidistantly arranged between the cleaning plate 8 and the sound insulation cover 7, the sound insulation cover 7 is provided with a limiting sliding hole for the smooth guide rod 12 to pass through, the smooth guide rod 12 is provided with a limiting block 13 with a diameter larger than the limiting sliding hole, and a telescopic spring 14 is provided between the limiting block 13 and the cleaning plate 8 for the smooth guide rod 12 to extend and retract up and down.

[0038] Among them, the side of the cleaning plate 8 close to the outlet is in contact with the outlet, and a soft rubber sealing pad is provided at the bottom of the cleaning plate 8 and the sound insulation door; the soft rubber sealing pad can fit tightly with the upper surface of the fan blade due to its own elasticity, thereby improving the sound insulation effect to a certain extent.

[0039] The feeding assembly includes a conveyor belt 15 arranged on the top of the frame bed 1 , the movable workbench 3 is installed on the conveyor belt 15 , and a servo motor 16 for driving the conveyor belt 15 to rotate is provided on the frame bed 1 .

[0040] Among them, the tightening mechanism includes a plurality of support rods 17 arranged on the top of the rotating disk 10, and a top plate 18 is provided on the top of the plurality of support rods 17, and a fixing cavity for fixing the blade wheel is formed between the top plate 18, the support rods 17 and the rotating disk 10, and a tightening cylinder 19 arranged vertically upward is provided on the top of the rotating disk 10, and the tightening cylinder 19 is provided with a pressure plate 20 which cooperates with the top plate 18 and contacts and tightens the blade wheel.

[0041] The lifting assembly includes a lifting cylinder 21 mounted on one side of the milling machine table 4 via a fixed frame, and the supporting platform 11 is mounted on the telescopic end of the lifting cylinder 21 .

[0042] It should be noted that the control panel 28 is a prior art, and in the utility model, the spindle motor 6, the rotating motor 9, the servo motor 16, and the tensioning cylinder 19 are all electrically connected to the control panel 28, and the control panel 28, under the control of the staff, allows the spindle motor 6, the rotating motor 9, the servo motor 16, and the tensioning cylinder 19 to work in coordination.

[0043] The impeller 2 with the fan blades is placed in a fixed cavity formed between the top plate 18, the support rod 17 and the rotating disk 10, and then the pressure plate 20 is driven by the expansion cylinder 19 to fix it. At the same time, in order to facilitate processing, the other end of the fan blade can be stably supported by the cooperation between the provided lifting cylinder 21 and the supporting platform 11, so as to facilitate the milling of the fan blade by the milling component. When the fan blade is stable, the servo motor 16 is used to drive the conveyor belt 15 to rotate, so that the movable workbench 3 is in a forward state, so as to facilitate the milling of the fan blade by the milling component, and a certain curvature is milled. At this time, the rotating disk 10 is driven to rotate by the provided rotating motor 9, so that the contact end of the fan blade and the spiral milling cutter 5 is more closely connected, so that the milling is deeper, and the combined feeding component makes the fan blade have a curvature that meets the requirements, so that a certain curvature can be milled on the end face of the fan blade; wherein, during the milling process, the sound insulation cover 7 provided can reduce the noise generated during the milling process Noise can be reduced, and the debris splashed around due to the high-speed rotation of the spiral milling cutter 5 during the milling process can be blocked to prevent the splashing debris from causing certain damage to nearby workers, thereby improving the working environment of the workers to a certain extent; at the same time, before the fan blades enter the soundproof cover 7, the feeding assembly drives the fan blades forward, so that the fan blades can open the soundproof door hinged in the soundproof cover 7 and closing the entrance inward, and then continue to move forward and be milled by the milling assembly. The fan blades apply a force to the cleaning plate 8 set in a trapezoidal shape, and it should be noted that the inclined surface of the trapezoid faces the fan blades, and with the cooperation of the smooth guide rod 12, the limit block 13 and the telescopic spring 14, the cleaning plate 8 is first moved upward. When the fan blades pass through the outlet, the bottom of the cleaning plate 8 will always be in contact with the upper surface of the fan blade under the resistance of the telescopic spring 14, so that the debris on the upper surface of the fan blade can be cleaned off, which is convenient for centralized processing of the debris, and reduces the work intensity of the workers to a certain extent.

[0044] Figure 1 , Figure 4 , Figure 5 and Figure 8 A second embodiment is shown, which mainly differs from the first embodiment in that a chip box 22 with an open top for receiving chips is provided at the bottom of the milling machine table 4, and a chip drop opening 23 connected to the chip box 22 is provided on the milling machine table 4, and a heat dissipation component for dissipating heat from the inside of the sound insulation cover 7 is provided between the chip box 22 and the sound insulation cover 7.

[0045] Among them, the heat dissipation component includes a wind hood 24 arranged in the sound insulation cover 7, and the air inlet end of the wind hood 24 is provided with a heat dissipation fan 25 for heat dissipation. The heat dissipation fan 25 is connected to the chip collection box 22 through a circulating air duct 26, and the circulating air duct 26 extends into the air inlet of the chip collection box 22 and is provided with a metal filter 27 for blocking debris.

[0046] By cooperating with the chip drop port 23 and the chip collecting box 22, the chips can be collected in a centralized manner. At the same time, by blowing air toward the spiral milling cutter 5 through the heat dissipation fan 25, not only the spiral milling cutter 5 can be cooled, but also the chips can be blown toward the chip drop port 23, thereby improving the efficiency of the chips falling into the chip collecting box 22 to a certain extent. Among them, by cooperating with the circulating air duct 26 and the metal filter 27, a downward suction force can be provided at the chip drop port 23, thereby greatly improving the efficiency of the chips falling into the chip collecting box 22.

[0047] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used.

[0048] When in use, firstly, through the cooperation between the provided lifting assembly, feeding assembly, tightening assembly, milling assembly and rotating motor 9, a certain curvature can be milled on the end face of the fan blade during the milling process, and then qualified fan blades can be produced; wherein, the specific milling process is as follows: under the control of the control panel 28, the fan wheel 2 with the fan blade is first placed in a fixed cavity formed between the top plate 18, the support rod 17 and the rotating disk 10, and then the pressing plate 20 is driven by the tightening cylinder 19 to fix it, and at the same time, in order to facilitate processing, the other end of the fan blade can be firmly supported through the cooperation between the provided lifting cylinder 21 and the supporting platform 11, so as to facilitate the milling work of the fan blade by the milling assembly When the fan blades are stable, the servo motor 16 is used to drive the conveyor belt 15 to rotate, so that the movable workbench 3 is in a forward state, which is convenient for the milling component to mill the fan blades and mill a certain curvature. At this time, the rotating motor 9 is used to drive the rotating disk 10 to rotate, so that the contact end of the fan blade and the spiral milling cutter 5 is closer, so that the milling is deeper, and the combined feeding component makes the fan blade have a curvature that meets the requirements, so that the end face of the fan blade can be milled with a certain curvature; wherein, during the milling process, the noise generated during the milling process can be reduced by the sound insulation cover 7, and the debris splashed around due to the high-speed rotation of the spiral milling cutter 5 during the milling process can be blocked. , preventing flying debris from causing certain damage to nearby workers, and improving the working environment of workers to a certain extent; at the same time, before the fan blades enter the sound insulation cover 7, the feeding assembly drives the fan blades forward, so that the fan blades can open the sound insulation door hinged in the sound insulation cover 7 and closing the entrance inward, and then continue to move forward and be milled by the milling assembly. The fan blades apply a force to the cleaning plate 8 set in a trapezoidal shape, and it should be noted that the inclined surface of the trapezoid faces the fan blades, and with the cooperation of the smooth guide rod 12, the limit block 13 and the telescopic spring 14, the cleaning plate 8 is first moved upward, and when the fan blades pass through the outlet, the bottom of the cleaning plate 8 will always be in contact with the fan blades under the resistance of the telescopic spring 14. The upper surface of the blade can be in contact with the upper surface of the fan blade, and then the debris on the upper surface of the fan blade can be swept down, which is convenient for the centralized treatment of the debris and reduces the work intensity of the staff to a certain extent; wherein, the debris can be collected in a centralized manner through the cooperation between the chip drop port 23 and the chip collecting box 22, and at the same time, the heat dissipation fan 25 is provided to blow wind towards the spiral milling cutter 5, which can not only dissipate the heat of the spiral milling cutter 5, but also blow the debris to the chip drop port 23, thereby improving the efficiency of the debris falling into the chip collecting box 22 to a certain extent; wherein, through the cooperation between the circulating air duct 26 and the metal filter 27, a downward suction force can be provided at the chip drop port 23, greatly improving the efficiency of the debris falling into the chip collecting box 22.

[0049] 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.

[0050] 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 large-scale fan blade CNC fixed-length arc end face milling machine, comprising a frame bed (1), a fan impeller (2) with fan blades installed, a movable workbench (3), a milling machine table (4) and a control panel (28) for controlling various electrical components, characterized in that: The milling machine table (4) is provided with a milling assembly for milling the blades, the milling assembly comprises a spiral milling cutter (5) arranged on the top of the milling machine table (4) for milling the blades, and the bottom of the milling machine table (4) is provided with a spindle motor (6) for driving the spiral milling cutter (5) to rotate; A soundproof cover (7) for covering the spiral milling cutter (5) is provided on the top of the milling machine table (4), and an inlet and an outlet for the blades to enter and exit are provided on both sides of the soundproof cover (7), the inlet is hinged with a soundproof door that opens inwards, and a cleaning plate (8) arranged in a trapezoidal shape for cleaning the upper surface of the blade is provided at the outlet via a telescopic mechanism; The frame bed (1) and the movable workbench (3) are provided with a feeding assembly for feeding the movable workbench (3), and a rotating motor (9) is provided on the movable workbench (3), a rotating disk (10) is provided on the output shaft of the rotating motor (9), and a tightening mechanism for fixing the fan impeller (2) is provided on the top of the rotating disk (10); A supporting platform (11) for supporting blades is provided on the milling machine table (4) via a lifting assembly.

2. A large-scale fan blade CNC fixed-length arc end face milling machine according to claim 1, characterized in that: The telescopic mechanism comprises a plurality of smooth guide rods (12) equidistantly arranged between the cleaning plate (8) and the soundproof cover (7); the soundproof cover (7) is provided with a limit sliding hole for the smooth guide rods (12) to pass through; the smooth guide rods (12) are provided with a limit block (13) having a diameter larger than the limit sliding hole; and a telescopic spring (14) is provided between the limit block (13) and the cleaning plate (8) for the smooth guide rods (12) to telescope upward and downward.

3. A large-scale fan blade CNC fixed-length arc end face milling machine according to claim 2, characterized in that: The side of the cleaning plate (8) close to the outlet is in contact with the outlet, and a soft rubber sealing pad is provided at the bottom of the cleaning plate (8) and the soundproof door.

4. A large-scale fan blade CNC fixed-length arc end face milling machine according to claim 1, characterized in that: The feeding assembly comprises a conveyor belt (15) arranged on the top of a frame bed (1), the movable workbench (3) is mounted on the conveyor belt (15), and a servo motor (16) for driving the conveyor belt (15) to rotate is provided on the frame bed (1).

5. The large-scale fan blade CNC fixed-length arc end face milling machine according to claim 1, characterized in that: The expansion mechanism comprises a plurality of support rods (17) arranged on the top of the rotating disk (10), and a top plate (18) is provided on the top of the plurality of support rods (17), and a fixing cavity for fixing the impeller is formed between the top plate (18), the support rods (17) and the rotating disk (10), and a vertically upwardly arranged expansion cylinder (19) is provided on the top of the rotating disk (10), and the expansion cylinder (19) is provided with a pressure plate (20) which cooperates with the top plate (18) and contacts and tightens the impeller.

6. A large-scale fan blade CNC fixed-length arc end face milling machine according to claim 1, characterized in that: The lifting assembly comprises a lifting cylinder (21) mounted on one side of a milling machine table (4) via a fixing frame, and the supporting platform (11) is mounted on the telescopic end of the lifting cylinder (21).

7. The large-scale fan blade CNC fixed-length arc end face milling machine according to claim 1, characterized in that: The bottom of the milling machine table (4) is provided with a chip collecting box (22) with an opening at the top for receiving chips, and the milling machine table (4) is provided with a chip dropping opening (23) connected to the chip collecting box (22), and a heat dissipation component for dissipating heat inside the sound insulation cover (7) is provided between the chip collecting box (22) and the sound insulation cover (7).

8. A large-scale fan blade CNC fixed-length arc end face milling machine according to claim 7, characterized in that: The heat dissipation assembly comprises a wind hood (24) arranged in the soundproof cover (7); a heat dissipation fan (25) for heat dissipation is provided at the air inlet end of the wind hood (24); the heat dissipation fan (25) is connected to the chip collecting box (22) via a circulation air duct (26); and a metal filter screen (27) for blocking debris is provided at the air inlet of the circulation air duct (26) extending into the chip collecting box (22).

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