Aircraft flange drilling equipment

Abstract

The present invention relates to an aircraft flange drilling device, comprising a gantry fixed on a base, and a horizontally placed cross brace is fixed on the column of the gantry, and also comprising: a drilling mechanism arranged on the cross brace; the drilling mechanism comprises a worm wheel one and a worm wheel two which are rotatably connected to the cross brace with a fixed axis, a motor is fixed on the cross beam of the gantry, and the output shaft of the motor is transmission-connected to the worm, and the worm is simultaneously meshingly transmission-connected to the worm wheel one and the worm wheel two; the drilling mechanism also comprises a lifting rod, and the two ends of the lifting rod are respectively hinged to the positions of the disk surfaces of the worm wheel one and the worm wheel two away from the center of a circle through two connecting rods, a circular disk is fixedly connected to the lower part of the lifting rod through a fixing rod, and a plurality of gears three are rotatably connected to the upper surface of the circular disk at equal intervals along the circumferential direction, and the plurality of gears three are simultaneously meshingly transmission-connected to the gear two, and the worm is transmission-connected to the gear two, a drill rod corresponding to the gear three is rotatably connected to the bottom surface of the circular disk with a fixed axis, and the drill rod is coaxially fixedly connected to the corresponding gear three.

Description

Technical Field

[0001] The invention relates to the field of aircraft accessory processing, in particular to aircraft flange drilling equipment. Background Art

[0002] When machining an aircraft flange, it is necessary to drill multiple through holes in the circumferential direction of its annular surface. Since the current method of drilling holes one by one requires multiple angle adjustments, the drilling efficiency is low and it is inconvenient to load and unload materials. In view of this, we propose an aircraft flange drilling device. Summary of the invention

[0003] The purpose of the present invention is to provide an aircraft flange drilling device to solve the problems raised in the above background technology. To achieve the above purpose, the present invention provides the following technical solutions: an aircraft flange drilling device, comprising a gantry fixed on a base, and a horizontally placed cross brace is fixed on the column of the gantry, and further comprising:

[0004] A drilling mechanism disposed on the cross brace;

[0005] The drilling mechanism comprises a worm gear 1 and a worm gear 2 which are rotatably connected to the cross brace with a fixed axis, a motor is fixed to the cross beam of the gantry, and the output shaft of the motor is transmission-connected to the worm, and the worm is meshingly transmission-connected to the worm gear 1 and the worm gear 2 at the same time;

[0006] The drilling mechanism also includes a lifting rod, and the two ends of the lifting rod are respectively hinged to the positions of the disk surfaces of worm gear one and worm gear two away from the center of the circle through two connecting rods. The lifting rod is fixedly connected to the disk through a fixing rod below, and the upper surface of the disk is connected to multiple gear threes for fixed-axis rotation at equal intervals along the circumference, and the multiple gear threes are simultaneously meshed and transmission-connected with gear two, and the worm is transmission-connected with gear two, and the bottom surface of the disk is fixedly connected to a drill rod corresponding to gear three for fixed-axis rotation, and the drill rod is coaxially and fixedly connected to the corresponding gear three.

[0007] Preferably, the worm gear 1 and the worm gear 2 have the same structure and are symmetrically arranged on both sides of the worm, and the two connecting rods corresponding to the worm gear 1 and the worm gear 2 are symmetrically arranged.

[0008] Preferably, a pump wheel 1 is fixed on the cross brace, and the impeller shaft in the pump wheel 1 is coaxially fixedly connected to the worm gear, a liquid pipe is fixed on and connected to the peripheral wall of the pump wheel 1, the outlet end of the liquid pipe is connected to annular pipe 2, and annular pipe 2 is fixed at the center of the bottom surface of the disc, and a plurality of water nozzles are fixed and connected to the annular pipe 2.

[0009] Preferably, the lower end of the worm is coaxially fixedly connected to the polygonal rod, a tube shaft is fixedly rotatably connected to the lifting rod, and the lower end of the tube shaft is coaxially fixedly connected to the second gear.

[0010] Preferably, a feeding mechanism is provided on the base, and a twisted rod arranged vertically upward is fixed to one end of the lifting rod, and the twisted rod is intermittently transmission-connected to the feeding mechanism, and a plurality of fixed clamping mechanisms are provided on the feeding mechanism.

[0011] Preferably, a cooling liquid pool is fixed on the base, and a filter screen is fixed in the middle of the inner wall of the cooling liquid pool, the inlet end of the liquid pipe is connected to the space below the filter screen inside the cooling liquid pool, and two top blocks are symmetrically fixed on the cooling liquid pool.

[0012] Preferably, the feeding mechanism includes a turntable rotatably connected to the base, and the turntable is provided with a plurality of stepped holes for placing flanges, the plurality of stepped holes are arranged at equal intervals along the circumference of the turntable, the rotation path of the stepped holes passes directly above the middle of the two top blocks, and the rotation path of the stepped holes passes directly below the disc, a plurality of guide tubes corresponding to the step holes are fixed to the upper surface of the turntable, and the guide tubes are funnel-shaped structures, a guide rod arranged vertically downward is fixed to one end of the lifting rod, and the guide rod is slidingly inserted in the guide tube in a matching manner.

[0013] Preferably, a gear one is rotatably connected to the cross brace, and a through hole matching the cross section of the twisted rod is opened at the center of the gear one, and an avoidance hole for the twisted rod to pass through is opened on the cross brace. The center of the upper surface of the turntable is coaxially fixedly connected to the shaft rod, and the upper end of the shaft rod passes through and is rotatably connected to the cross brace. The upper end of the shaft rod is coaxially fixedly connected to the inner ring of the ratchet, and the outer ring of the ratchet is meshingly transmission connected to the gear one.

[0014] Preferably, a plurality of the fixed clamping mechanisms are arranged in one-to-one correspondence with the stepped holes, and the fixed clamping mechanism includes two grooves opened on the side wall of the stepped hole located on the upper side of the stepped surface, and the two grooves are symmetrically arranged on both sides of the central axis of the stepped hole, and a card block is inserted and slidably connected in the groove, and a protrusion extending toward the inside of the stepped hole is integrally fixed on the upper sides of the opposite ends of the two card blocks, and the opposite ends of the two card blocks are connected to the inner wall of the groove by a spring, and a slot hole connected to the groove is opened on the bottom surface of the turntable, and a lever is inserted and slidably connected in the slot hole, and the upper end of the lever is fixedly connected to the corresponding card block, and the two top blocks can be in buckle contact with the lower ends of the two levers in the fixed clamping mechanism.

[0015] Preferably, a second pump wheel is fixed on the cross brace, and an air pipe is fixed and connected to the peripheral wall of the second pump wheel, the second worm wheel is coaxially fixedly connected to the impeller shaft inside the second pump wheel, the air outlet end of the air pipe is connected to an annular tube, and the annular tube is fixed to the bottom surface of the cross brace through a hanger, a plurality of air nozzles are connected to the annular tube, the annular tubes one and two are located on both sides of the central axis of the turntable, and the annular tube one is located above the corresponding stepped hole, a collecting box is provided on the base, and the collecting box is located directly below the annular tube one.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] In the present invention, the flange is drilled with multiple holes synchronously through the drilling mechanism to achieve efficient drilling of the flange, and the feeding mechanism is driven to automatically feed the material while drilling, and the fixed clamping mechanism on the feeding mechanism automatically clamps and releases the flange, which saves time and labor and greatly improves the degree of automation. At the same time, coolant is transported to cool and lubricate the drill rod, and debris generated by drilling can also be removed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The schematic diagram of the cross-sectional structure of the general assembly of the present invention is shown in FIG. Figure 1 ;

[0019] Figure 2 The schematic diagram of the cross-sectional structure of the general assembly of the present invention is shown in FIG. Figure 2 ;

[0020] Figure 3 for Figure 1 A is an enlarged structural diagram;

[0021] Figure 4 It is a top view of the structure of worm gear 1, worm gear 2, pump wheel 1 and pump wheel 2 in the present invention.

[0022] In the figure: 1, base; 2, cooling liquid pool; 3, filter screen; 4, connecting rod; 5, worm gear 1; 6, liquid pipe; 7, worm; 8, motor; 9, air pipe; 10, worm gear 2; 11, gear 1; 12, polygonal rod; 13, pipe shaft; 14, ratchet; 15, avoidance hole; 16, twisted rod; 17, gantry; 18, cross brace; 19, suspension rod; 20, ring pipe 1; 21, jet nozzle; 22 , guide tube; 23, turntable; 24, collecting box; 25, top block; 26, drill rod; 27, water nozzle; 28, stepped hole; 29, lever; 30, slot hole; 31, guide rod; 32, block; 33, groove; 34, spring; 35, annular tube 2; 36, disc; 37, fixing rod; 38, gear 2; 39, gear 3; 40, lifting rod; 41, pump wheel 1; 42, pump wheel 2. DETAILED DESCRIPTION

[0023] 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 technical personnel in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figures 1 to 4The present invention provides a technical solution: an aircraft flange drilling device, comprising a gantry 17 fixed on a base 1, and a horizontally placed cross brace 18 is fixed on the column of the gantry 17, and further comprising:

[0025] A drilling mechanism disposed on the cross brace 18;

[0026] The drilling mechanism includes a worm wheel 1 5 and a worm wheel 2 10 which are fixedly connected to the cross brace 18, a motor 8 is fixed to the cross beam of the gantry 17, and the output shaft of the motor 8 is connected to the worm 7, and the worm 7 is meshed and connected to the worm wheel 1 5 and the worm wheel 2 10 at the same time;

[0027] The drilling mechanism also includes a lifting rod 40, and the two ends of the lifting rod 40 are respectively hinged to the positions of the disk surfaces of the worm gear 1 5 and the worm gear 2 10 away from the center of the circle through two connecting rods 4. The lifting rod is fixedly connected to the disk 36 through a fixing rod 37 below, and the upper surface of the disk 36 is connected to multiple gear threes 39 for fixed-axis rotation at equal intervals along the circumference, and the multiple gear threes 39 are simultaneously meshed and transmission-connected with the gear two 38, and the worm 7 is transmission-connected with the gear two 38, and the bottom surface of the disk 36 is fixedly rotationally connected to a drill rod 26 corresponding to the gear three 39, and the drill rod 26 is coaxially and fixedly connected to the corresponding gear three 39.

[0028] In this embodiment, the worm gear 1 5 and the worm gear 2 10 have the same structure and are symmetrically arranged on both sides of the worm 7 , and the two connecting rods 4 corresponding to the worm gear 1 5 and the worm gear 2 10 are symmetrically arranged.

[0029] In this embodiment, a pump wheel 41 is fixed on the cross brace 18, and the impeller shaft in the pump wheel 41 is coaxially fixedly connected to the worm wheel 5. A liquid pipe 6 is fixed and connected to the peripheral wall of the pump wheel 41. The outlet end of the liquid pipe 6 is connected to the annular pipe 2 35, and the annular pipe 2 35 is fixed at the center of the bottom surface of the disk 36. A plurality of water nozzles 27 are fixed and connected to the annular pipe 2 35.

[0030] In this embodiment, the lower end of the worm 7 is coaxially fixedly connected to the polygonal rod 12, and the lifting rod 40 is fixedly connected to the tube shaft 13, the polygonal rod 12 is inserted into the tube shaft 13, and the polygonal rod 12 can slide in the tube shaft 13, and the lower end of the tube shaft 13 is coaxially fixedly connected to the gear 2 38.

[0031] In this embodiment, a feeding mechanism is provided on the base 1, and a twisted rod 16 vertically arranged upward is fixed to one end of the lifting rod 40, and the twisted rod 16 is intermittently transmission-connected to the feeding mechanism, and a plurality of fixed clamping mechanisms are provided on the feeding mechanism.

[0032] In this embodiment, a cooling liquid pool 2 is fixed on the base 1, and a filter screen plate 3 is fixed to the middle of the inner wall of the cooling liquid pool 2. The inlet end of the liquid pipe 6 is connected to the space below the filter screen plate 3 inside the cooling liquid pool 2. Two top blocks 25 are symmetrically fixed on the cooling liquid pool 2, and the opposite surfaces of the two top blocks 25 are wedge-shaped surface structures.

[0033] In this embodiment, the feeding mechanism includes a turntable 23 connected to the base 1 by a fixed axis, and a plurality of stepped holes 28 for placing flanges are provided on the turntable 23, and the plurality of stepped holes 28 are arranged at equal intervals along the circumferential direction of the turntable 23, and the rotation path of the stepped holes 28 passes directly above the middle of the two top blocks 25, and the rotation path of the stepped holes 28 passes directly below the disc 36, and a plurality of guide tubes 22 corresponding to the stepped holes 28 are fixed on the upper surface of the turntable 23, and the guide tubes 22 are funnel-shaped structures, and a vertical guide tube 22 is fixed at one end of the lifting rod 40. A guide rod 31 is arranged straight downward, and the guide rod 31 is slidably inserted in the guide tube 22. A gear 11 is rotatably connected to the cross brace 18, and a through hole matching the cross section of the twisted rod 16 is provided at the center of the gear 11, and an avoidance hole 15 for the twisted rod 16 to pass through is provided on the cross brace 18. The center of the upper surface of the turntable 23 is coaxially fixedly connected to the shaft rod, and the upper end of the shaft rod passes through and is rotatably connected to the cross brace 18. The upper end of the shaft rod is coaxially fixedly connected to the inner ring of the ratchet 14, and the outer ring of the ratchet 14 is meshingly connected to the gear 11 for transmission.

[0034] In this embodiment, a plurality of the fixed clamping mechanisms are arranged in a one-to-one correspondence with the stepped holes 28, and the fixed clamping mechanisms include two grooves 33 provided on the side walls of the stepped holes 28 located on the upper side of the stepped surface, and the two grooves 33 are symmetrically arranged on both sides of the central axis of the stepped hole 28, and a clamping block 32 is inserted and slidably connected in the groove 33, and a protrusion extending toward the inside of the stepped hole 28 is integrally fixed on the upper sides of the opposite ends of the two clamping blocks 32, and the opposite ends of the two clamping blocks 32 are connected to the inner wall of the groove 33 by a spring 34, and a slot 30 connected to the groove 33 is provided on the bottom surface of the turntable 23, and a lever 29 is inserted and slidably connected in the slot 30, and the upper end of the lever 29 is fixedly connected to the corresponding clamping block 32, and the two top blocks 25 can be in buckle contact with the lower ends of the two levers 29 in the fixed clamping mechanism.

[0035] In this embodiment, a pump wheel 42 is fixed on the cross brace 18, and the circumferential wall of the pump wheel 42 is fixed and connected to the air pipe 9, the worm gear 10 is coaxially fixedly connected to the impeller shaft inside the pump wheel 42, the air outlet end of the air pipe 9 is connected to the annular pipe 20, and the annular pipe 20 is fixed to the bottom surface of the cross brace 18 through the suspension rod 19, and a plurality of air nozzles 21 are connected to the annular pipe 20, the annular pipe 20 and the annular pipe 35 are located on both sides of the central axis of the turntable 23, and the annular pipe 20 is located above the corresponding stepped hole 28, and a collecting box 24 is provided on the base 1, and the collecting box 24 is located directly below the annular pipe 20.

[0036] Working principle and advantages of the present invention: When the aircraft flange drilling device is in use, the working process is as follows:

[0037] like Figure 1 , Figure 2 and Figure 3As shown, the motor 8 is started to work, so that the motor 8 drives the worm 7 to rotate, so that the worm 7 drives the worm wheel 1 5 and the worm wheel 2 10 to rotate synchronously in the opposite direction, and then the worm wheel 1 5 and the worm wheel 2 10 drive the lifting rod 40 to move up and down reciprocatingly through the two connecting rods 4. When the lifting rod 40 moves up, it drives the twisted rod 16 and the guide rod 31 to move up. When the lower end of the guide rod 31 is located above the guide tube 22, the upper end of the twisted rod 16 just begins to enter the through hole in the center of the gear 1 11. When the twisted rod 16 moves up, it drives the gear 11 to rotate, so that The gear 11 drives the outer ring of the ratchet 14 to rotate, so that the outer ring of the ratchet 14 can drive the inner ring of the ratchet 14 to rotate through the pawl, and then the inner ring of the ratchet 14 drives the shaft and the rotating disk 23 to rotate, and then the rotating disk 23 drives the flange in the stepped hole 28 to move directly below the disc 36. When the two levers 29 in the fixed clamping mechanism corresponding to the stepped hole 28 approach the opposite ends of the two top blocks 25 and contact with the wedge-shaped surface structures of the two top blocks 25, the contact path direction of the lever 29 and the wedge-shaped surface structure makes the two levers 29 9, the distance between the two top blocks 25 gradually decreases, that is, the wedge-shaped surface structures of the two top blocks 25 exert a mutual squeezing force on the two levers 29, so that the two levers 29 drive the two clamping blocks 32 to approach each other and stretch the corresponding springs 34, so that the springs 34 obtain a restoring force. When the lifting rod 40 rises to the highest point, the two clamping blocks 32 clamp the flange and start to move downward when the lifting rod 40 rises to the highest point, so that the lifting rod 40 drives the twisted rod 16 and the guide rod 31 to move downward at the same time, and the twisted rod 16 drives the gear 31 to move downward at the same time. 11 rotates in the opposite direction, so that the gear 11 drives the outer ring of the ratchet 14 to rotate in the opposite direction, so that the outer ring of the ratchet 14 cannot drive the inner ring of the ratchet 14 to rotate through the pawl, and further the inner ring of the ratchet 14 cannot drive the shaft and the turntable 23 to rotate through the ratchet 14, and when the twisted rod 16 is disengaged from the through hole in the center of the gear 11, the guide rod 31 is just opened and inserted into the corresponding guide tube 22, and the guide rod 31 and the guide tube 22 play the role of limiting the turntable 23, avoiding the turntable 23 from swinging during drilling, thereby improving the drilling accuracy.

[0038] As described above, when the worm 7 rotates, the pipe shaft 13 is driven to rotate through the polygonal rod 12, and the pipe shaft 13 drives the gear 2 38 to rotate, so that the gear 2 38 simultaneously drives each gear 3 39 to rotate, so that the gear 3 39 drives the corresponding drill rod 26 to rotate, and when the lifting rod 40 moves downward, the disc 36 and each drill rod 26 thereon are driven downward through the fixed rod 37, so that the drill rod 26 drills the flange, thereby realizing synchronous multi-hole simultaneous drilling, which greatly improves the working efficiency. Figure 4As shown, when the worm gear 5 rotates, the impeller shaft in the pump wheel 41 is driven to rotate, so that the pump wheel 41 draws the coolant in the coolant pool 2 through the liquid pipe 6 and transports it to the annular pipe 2 35, and then each water nozzle 27 sprays it to the drilling position. On the one hand, it cools and lubricates the drill rod 26, and on the other hand, it can flush away most of the debris. The coolant falls into the coolant pool 2 with the debris, and the debris is filtered out by the filter plate 3, so that the coolant can be recycled.

[0039] When the lifting rod 40 drops to the lowest point, the drilling is completed and the lifting rod 40 starts to rise. When the twisted rod 16 starts to contact the through hole at the center of the gear 11, the turntable 23 rotates to move the drilled flange to the top of the collecting box 24. When the lever 29 is disengaged from the top block 25, the two clamping blocks 32 move away from each other and release the flange under the restoring force of the spring 34, so that the flange at the drill hole can be removed, thereby realizing automatic clamping and loosening of the flange, saving time and effort and greatly improving the degree of automation.

[0040] When the flange after drilling moves to the bottom of the annular tube 20, the flange is removed and replaced with the next flange to be drilled. The rotation of the worm gear 10 drives the impeller shaft in the pump wheel 42 to rotate, so that the pump wheel 42 delivers air to the annular tube 20, and then each air nozzle 21 blows air to the turntable 23 and the corresponding stepped hole 28, so as to further blow away the debris.

[0041] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0042] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. An aircraft flange drilling device, comprising a gantry (17) fixed on a base (1), and a horizontally placed cross brace (18) fixed on a column of the gantry (17), characterized in that: Also includes: A drilling mechanism disposed on the cross brace (18); The drilling mechanism comprises a worm wheel 1 (5) and a worm wheel 2 (10) which are fixedly rotatably connected to a cross brace (18); a motor (8) is fixed to the cross beam of the gantry (17); an output shaft of the motor (8) is transmission-connected to a worm (7); and the worm (7) is meshingly transmission-connected to the worm wheel 1 (5) and the worm wheel 2 (10); The drilling mechanism also includes a lifting rod (40), and the two ends of the lifting rod (40) are respectively hinged to the positions of the disk surfaces of the worm gear one (5) and the worm gear two (10) away from the center of the circle through two connecting rods (4), and the lower part of the lifting rod is fixedly connected to the disk (36) through a fixing rod (37), and the upper surface of the disk (36) is connected to a plurality of gear threes (39) at equal intervals along the circumference, and the plurality of gear threes (39) are simultaneously meshed and transmission-connected with the gear two (38), and the worm (7) is transmission-connected with the gear two (38), and the bottom surface of the disk (36) is connected to a drill rod (26) corresponding to the gear three (39) in a fixed-axis rotation manner, and the drill rod (26) is coaxially and fixedly connected to the corresponding gear three (39); A pump wheel 1 (41) is fixed on the cross brace (18), and the impeller shaft in the pump wheel 1 (41) is coaxially fixedly connected to the worm wheel 1 (5). A liquid pipe (6) is fixed on and connected to the peripheral wall of the pump wheel 1 (41), and the outlet end of the liquid pipe (6) is connected to the annular pipe 2 (35), and the annular pipe 2 (35) is fixed at the center of the bottom surface of the disc (36). A plurality of water spray nozzles (27) are fixed and connected to the annular pipe 2 (35); A feeding mechanism is provided on the base (1), and a twisted rod (16) arranged vertically upward is fixed to one end of the lifting rod (40), and the twisted rod (16) is intermittently transmission-connected to the feeding mechanism, and a plurality of fixed clamping mechanisms are provided on the feeding mechanism; A cooling liquid pool (2) is fixed on the base (1), and a filter screen plate (3) is fixed in the middle of the inner wall of the cooling liquid pool (2); the inlet end of the liquid pipe (6) is connected to the space below the filter screen plate (3) inside the cooling liquid pool (2), and two top blocks (25) are symmetrically fixed on the cooling liquid pool (2); The feeding mechanism comprises a turntable (23) rotatably connected to the base (1) with a fixed axis, and a plurality of stepped holes (28) for placing flanges are provided on the turntable (23), and the plurality of stepped holes (28) are arranged at equal intervals along the circumference of the turntable (23), and the rotation path of the stepped holes (28) passes directly above the middle of the two top blocks (25), and the rotation path of the stepped holes (28) passes directly below the disc (36), and a plurality of guide tubes (22) corresponding to the stepped holes (28) are fixed on the upper surface of the turntable (23), and the guide tubes (22) are funnel-shaped structures, and a guide rod (31) arranged vertically downward is fixed to one end of the lifting rod (40), and the guide rod (31) is adapted to be slidably inserted in the guide tube (22); The cross brace (18) is rotatably connected to a gear one (11), and a through hole matching the cross section of the twisted rod (16) is provided at the center of the gear one (11), and an avoidance hole (15) for the twisted rod (16) to pass through is provided on the cross brace (18), the center of the upper surface of the rotating disk (23) is coaxially fixedly connected to the shaft, and the upper end of the shaft passes through and is rotatably connected to the cross brace (18), the upper end of the shaft is coaxially fixedly connected to the inner ring of the ratchet (14), and the outer ring of the ratchet (14) is meshingly connected to the gear one (11); The plurality of fixed clamping mechanisms are arranged in one-to-one correspondence with the stepped holes (28), the fixed clamping mechanisms comprising two grooves (33) opened on the side wall of the stepped hole (28) located on the upper side of the stepped surface, the two grooves (33) being symmetrically arranged on both sides of the central axis of the stepped hole (28), a clamping block (32) being inserted and slidably connected in the groove (33), and a clamping block (32) extending toward the inside of the stepped hole (28) being integrally fixed on the upper sides of the opposite ends of the two clamping blocks (32). The two ends of the two clamping blocks (32) facing away from each other are connected to the inner wall of the groove (33) via a spring (34); a slot hole (30) communicating with the groove (33) is formed on the bottom surface of the rotating disk (23); a lever (29) is inserted and slidably connected in the slot hole (30); the upper end of the lever (29) is fixedly connected to the corresponding clamping block (32); and the two top blocks (25) can be in buckling contact with the lower ends of the two levers (29) in the fixed clamping mechanism.

2. The aircraft flange drilling device according to claim 1, characterized in that: The worm gear 1 (5) and the worm gear 2 (10) have the same structure and are symmetrically arranged on both sides of the worm (7), and the two connecting rods (4) corresponding to the worm gear 1 (5) and the worm gear 2 (10) are symmetrically arranged.

3. The aircraft flange drilling device according to claim 2, characterized in that: The lower end of the worm (7) is coaxially fixedly connected to the polygonal rod (12), the lifting rod (40) is fixedly rotatably connected to a tube shaft (13), and the lower end of the tube shaft (13) is coaxially fixedly connected to the second gear (38).

4. The aircraft flange drilling device according to claim 3, characterized in that: A second pump wheel (42) is fixed on the cross brace (18), and an air pipe (9) is fixed on the peripheral wall of the second pump wheel (42) and connected to the second pump wheel. The second worm wheel (10) is coaxially fixedly connected to the impeller shaft inside the second pump wheel (42). The air outlet end of the air pipe (9) is connected to the first ring pipe (20), and the first ring pipe (20) is fixed to the bottom surface of the cross brace (18) through a suspension rod (19). A plurality of air nozzles (21) are connected to the first ring pipe (20). The first ring pipe (20) and the second ring pipe (35) are located on both sides of the central axis of the turntable (23), and the first ring pipe (20) is located above the corresponding stepped hole (28). A collecting box (24) is provided on the base (1), and the collecting box (24) is located directly below the first ring pipe (20).

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