A drilling jig fixture

Abstract

This invention belongs to the field of drilling technology, specifically relating to a drilling jig tooling used in conjunction with a template frame to drill holes in the web, ribs, and joints. It includes a first drilling jig mechanism, a second drilling jig mechanism, and a central positioning frame. Both the first and second drilling jig mechanisms have six holes in the middle and four holes at each end. The first drilling jig mechanism is placed on the web and fixed to the template frame by the positioning frame. After drilling the middle holes in the web and joints, the positioning mechanism is connected to the web, joint, and first drilling jig mechanism through these holes. The holes at both ends are then drilled. The first drilling jig mechanism is removed, the ribs are positioned, and the central positioning frame is installed. Holes on the ribs are drilled along the central positioning frame through the holes in the web and joints. The second drilling jig mechanism is then fitted onto the ribs, and the positioning mechanism is connected to the ribs through the holes. The remaining holes on the ribs are then drilled. This invention solves the problems of low drilling accuracy and perpendicularity, improves assembly accuracy, saves costs, and increases efficiency.

Description

Technical Field

[0001] This invention belongs to the field of drilling technology, and particularly relates to a drilling jig tooling. Background Technology

[0002] Currently, drill templates are used to guide cutting tools in drilling (including drilling, reaming, and boring) on ​​products. Drill templates have several positioning slots drilled at predetermined positions according to the drilling requirements. During use, the drill template is fixed to the workpiece via these positioning slots before the workpiece is mounted on the machine tool. During drilling, the drill bit enters the workpiece along the preset holes on the drill template. The drill template provides excellent guidance and positioning, which helps ensure drilling quality and improves drilling efficiency. It is widely used in aircraft assembly.

[0003] For example, patent (CN105171057B) discloses a template device for drilling holes, including: a flexible drill template mounting base plate adapted to the surface shape of the external part to be drilled, which includes an open portion and a solid portion; the open portion is used to accommodate a drill module, the drill module is provided with a through hole, and the drill module is also provided with a positioning device; the drill module includes at least two sides; the first side is connected to a fine-tuning locking module through a drill template mounting plate, and the fine-tuning locking module can be adjusted slightly to make the position of the fine-tuning locking module relative to the solid portion move slightly and lock it on the solid portion; the second side of the drill module is connected to a drill template fixing frame through a drill template support arm, and the drill template support arm can be locked to the drill template fixing frame through a second locking device; when using the patented technology, the following technical problems were found in the prior art: the existing tooling is not convenient to use, and the accuracy and perpendicularity of the holes between the components cannot be guaranteed. Therefore, a drill jig tooling is designed to provide another technical solution to the above technical problems.

[0004] For web structures, rib structures, and joints that require connection by precision bolts, the existing hole-making method involves making holes separately and then combining them due to the lack of open space, which results in large deviations in the hole axis. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a drilling jig tooling that works in conjunction with existing jigs used in the positioning and assembly of web structures, rib structures, and joints. A single tooling set is used to complete the drilling of holes in the web structure, rib structure, and joints, ensuring consistency among the holes. Four first positioning holes are evenly distributed in the center of the top of the first drilling template. A first positioning mechanism for limiting is installed on two of the first positioning holes at one end, and a second positioning mechanism for limiting is installed on two of the first positioning holes at the other end. Simultaneously, eight second positioning holes are evenly distributed inside the top of the first drilling template at both ends of the first positioning holes, thus facilitating drilling even in a small space.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A drilling jig fixture, comprising a first drilling jig mechanism, a second drilling jig mechanism, a fixing mechanism, and a center positioning frame 27.

[0008] The first drilling jig mechanism includes a first drilling template 1, a first positioning mechanism 2, a second positioning mechanism 3, a first fixed bushing 4, a second fixed bushing 5, a positioning groove 7, and a positioning frame 26. It is installed above the web structure and used for drilling holes in the web structure and joints. The first drilling template 1 is rectangular, with a sloping bottom surface to match the profile of the top surface of the web. Six first positioning holes are formed in the center of its top surface, arranged in two rows along the length of the first drilling template 1. A first fixed bushing 4 is rotatably connected inside each first positioning hole for drilling, located along the length of the first drilling template 1. Two first positioning mechanisms 2 are installed in the two first positioning holes at one end of the first positioning direction, and two second positioning mechanisms 3 are installed in the two first positioning holes at the other end. The two positioning mechanisms are used to connect the first drilling template 1, the web and the joint and keep the three in contact during the drilling process. The top surface of the first drilling template 1 is provided with second positioning holes at both ends, that is, on both sides of the first positioning holes. The second positioning holes are rotatably connected to the second fixing bushing 5 for drilling. The bottom surface of the first drilling template 1 is provided with a positioning groove 7 extending along the width direction on one side, which is used to avoid the rib structure on the web structure.

[0009] The first positioning mechanism 2 and the second positioning mechanism 3 have the same structure, both including a rotating rod 8, a fixed column 9, a positioning rod 10, a positioning disk 11, and a nut 12. The bottom of the fixed column 9 is fixed with a coaxial positioning rod 10. The lower end of the positioning rod 10 is threaded and connected to the nut 12. The bottom outer periphery of the fixed column 9 is provided with a positioning disk 11. The outer diameter of the positioning disk 11 is larger than the diameter of the first positioning hole to prevent the fixed column 9 from falling into the hole. The fixed column 9, the positioning rod 10, and the nut 12 form a positioning column. Both the first positioning mechanism and the second positioning mechanism include two sets of positioning columns. The two sets of positioning columns are placed in parallel. The rotating rod 8 passes through the top of the two fixed columns 9 to connect the two sets of positioning columns into one. In use, the positioning column is inserted into the first positioning hole and the corresponding holes of the web structure and the joint. The positioning rod 10 is slidably connected to the first positioning hole, and the connection of the three is completed by the nut 12.

[0010] Two positioning frames 26 are provided, which are respectively fixed to both ends of the first drilling template 1 on the width side of the top surface by bolts, and are used to position and fix the first drilling template 1 on the frame.

[0011] The fixing mechanism includes a fixed shell 13, a positioning hook 14, a moving column 15, a slider 16, a rotating shaft 17, a threaded rod 18, a displacement motor 19, a transmission worm 20, and a transmission worm wheel 21. The fixed shell 13 is a hollow cylindrical shell, and the moving column 15, rotating shaft 17, threaded rod 18, displacement motor 19, transmission worm 20, and transmission worm wheel 21 are all located inside it. Through holes are formed at the center of both end faces of the fixed shell 13. The displacement motor 19 is fixedly connected to the middle of its inner wall, and the output end of the displacement motor 19 is connected to the transmission worm 20. The rotating shaft 17 is arranged axially, and the transmission worm wheel 21 is fixedly surrounded in its middle. The transmission worm wheel 21 is meshed with the bottom of the transmission worm 20. Threaded rods 18 are fixed at both ends of the rotating shaft 17, and the threads of the two threaded rods 18 have opposite directions. The moving column 15 is threadedly connected to the end of the threaded rod 18 away from the rotating shaft 17, and the moving column 15 can move along the threaded end. The rod 18 moves, and sliders 16 are evenly distributed and fixed on the outer wall of the moving column 15 along the circumference, so that the moving column 15 and the inner wall of the fixed shell 13 are slidably connected through the sliders 16. The outer end faces of the two moving columns 15 are respectively fixedly connected to positioning hooks 14; one end of the positioning hook 14 is a straight rod and the other end is a bent hook. The straight rod ends of the two identical positioning hooks 14 pass through the through hole in the center of the end face of the fixed shell 13 and are fixedly connected to the moving column 15. The displacement motor 19 drives the transmission worm gear 20 to rotate, which in turn drives the rotating shaft 17 to rotate through the transmission worm wheel 21, which in turn drives the moving columns 15 on the threaded rods 18 on both sides to move relative to each other or back to back, thereby adjusting the distance between the bent hook ends of the two positioning hooks 14. The two positioning hooks 14 are respectively mounted on the rotating rods 8 in the first positioning mechanism 2 and the second positioning mechanism 3 to lock the first positioning mechanism 2 and the second positioning mechanism 3, preventing the first drill template 1, the web structure and the joint position from moving due to the loosening of the nut 12.

[0012] The central positioning frame 27 is a columnar drill jig, and there are two of them. It is used to drill corresponding holes on the rib structure through the holes already drilled in the web structure and the drill bit. The drilled holes are used for positioning and connection between the second drill jig mechanism and the rib structure. Specifically, after the web structure and the joint are drilled using the first drill jig 1, a central positioning frame 27 is set in the two outermost diagonal holes. After the rib structure is positioned, holes are drilled on the rib structure through the central positioning frame 27. After drilling, the central positioning frame 27 is removed. The central positioning frame 27 is provided with a handle structure for flexible insertion and removal of the central positioning frame 27.

[0013] The second drilling jig mechanism includes a second drilling template 22, an inclined surface 23, a third positioning mechanism 24, and a third fixing bushing 25, and is installed below the rib structure. The second drilling template 22 is a rectangle with a length equivalent to that of the first drilling template 1. Its upper surface is an inclined surface 23 for cooperating with the rib structure. The middle of its upper surface has a hole corresponding to the position and number of the first positioning holes on the first drilling template 1. The two ends of the upper surface are provided with third positioning holes. The number and position of the third positioning holes correspond to the second positioning holes on the first drilling template 1. The third fixing bushing 25 is rotatably connected inside the third positioning holes. The third positioning mechanism 24 is installed inside the two third fixing bushings 25 located at opposite corners on the outer side. The structure of the third positioning mechanism 24 is basically the same as that of the first positioning mechanism 2 and the second positioning mechanism 3, except that it has only one set of positioning pins. The third positioning mechanism 24 is used to connect the second drilling template 22 and the rib structure and keep them in contact during the drilling process.

[0014] Furthermore, the first drilling template 1 is provided with tool ball sleeves 6 at the four corners of its top, and these are located outside the second positioning hole for tooling inspection.

[0015] In use, the web structure and joint are first positioned using a template. The first drilling template 1 is positioned on the web structure using a positioning frame 26 and fixed to the template. Holes are drilled on the web structure and joint through the first positioning hole in the middle of the first drilling template 1. The first positioning mechanism 2 and the second positioning mechanism 3 are then inserted into the holes at both ends, respectively. The first drilling template 1, the web structure, and the joint are connected using nuts 12. Holes are drilled on the web structure and joint through the second positioning holes at both ends of the first drilling template 1. After drilling, the first drilling template 1 is removed. The rib structure is positioned using the template, and two central positioning frames 27 are placed in the two outermost diagonally opposite holes on the web structure. Holes are drilled on the rib structure using the central positioning frames 27. After drilling, the central positioning frames 27 are removed. Using two third positioning mechanisms, the second drilling template 22 is positioned and connected to the rib structure through the holes on the rib structure. Holes are drilled on the rib structure through the holes on the second drilling template 22. After drilling, the second drilling template 22 is removed. This completes the drilling work for the entire web structure, rib structure, and joint, and allows for subsequent steps.

[0016] It is clear without a doubt that the technical solution described above in this application can solve the technical problem that this application aims to address.

[0017] The beneficial effects of this invention are as follows:

[0018] The present invention provides a drilling jig fixture, wherein four first positioning holes are evenly distributed in the middle of the inside of the top of the first drilling template, and a first positioning mechanism for limiting is installed on two of the first positioning holes at one end, and a second positioning mechanism for limiting is installed on two of the first positioning holes at the other end. At the same time, eight second positioning holes are evenly distributed in the inside of the top of the first drilling template and at both ends of the first positioning holes, so that it is easy to open holes even in a small space.

[0019] By combining the fixed shell and the positioning hooks, the two positioning hooks can be respectively assembled on the outside of the rotating rod in the first positioning mechanism and the second positioning mechanism. In this way, the first drilling template can be adjusted in position by raising and lowering the fixed shell to drive the first positioning mechanism and the second positioning mechanism.

[0020] This invention solves the problems of low drilling accuracy and perpendicularity, improves assembly accuracy, reduces rework rate and part scrap rate, saves costs, and improves efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0023] Figure 3 This is a schematic diagram of the first drilling jig mechanism;

[0024] Figure 4 This is a top view of the first drilling jig mechanism;

[0025] Figure 5 This is a schematic diagram of the positioning mechanism;

[0026] Figure 6 This is a schematic diagram of the second positioning mechanism;

[0027] Figure 7 A schematic diagram of the structure of the central positioning frame;

[0028] Figure 8 This is a schematic diagram of the overall structure of the fixing mechanism;

[0029] Figure 9 This is a schematic diagram of the internal structure of the fixed mechanism;

[0030] Figure 10 This is a partial structural diagram of the fixing mechanism.

[0031] In the diagram: 1 First drilling template; 2 First positioning mechanism; 3 Second positioning mechanism; 4 First fixed bushing; 5 Second fixed bushing; 6 Tool ball sleeve; 7 Positioning groove; 8 Rotating rod; 9 Fixed column; 10 Positioning rod; 11 Positioning plate; 12 Nut; 13 Fixed shell; 14 Positioning hook; 15 Moving column; 16 Slider; 17 Rotating shaft; 18 Threaded rod; 19 Displacement motor; 20 Transmission worm gear; 21 Transmission worm wheel; 22 Second drilling template; 23 Inclined surface; 24 Third positioning mechanism; 25 Third fixed bushing; 26 Positioning frame; 27 Center positioning frame. Detailed Implementation

[0032] The technical solution of the present invention will now be clearly and completely described. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. All other embodiments derived by those skilled in the art based on the embodiments of the present invention through modifications or adjustments are within the protection scope of the present invention.

[0033] A drilling jig fixture includes a first drilling jig mechanism, a second drilling jig mechanism, a fixing mechanism, and a center positioning frame 27, such as... Figure 1 and Figure 2 As shown.

[0034] like Figure 3 and Figure 4 As shown, the first drilling jig mechanism includes a first drilling template 1, a first positioning mechanism 2, a second positioning mechanism 3, a first fixing bushing 4, a second fixing bushing 5, a positioning groove 7, and a positioning frame 26. It is installed above the web structure and used for drilling holes in the web structure and joints. The first drilling template 1 is rectangular, with a sloping bottom surface to match the profile of the top surface of the web. Six first positioning holes are opened in the center of its top surface, arranged in two rows along the length of the first drilling template 1. A first fixing bushing 4 is rotatably connected inside each first positioning hole for drilling. Two first positioning holes located at one end of the first drilling template 1 along its length are fitted with first fixing bushings 26. Positioning mechanism 2, with two first positioning holes at the other end housing a second positioning mechanism 3. The two positioning mechanisms are used to connect the first drilling template 1, the web, and the joint, and to keep the three in contact during the drilling process. Four second positioning holes are evenly distributed on both sides of the top surface of the first drilling template 1, i.e., on both sides of the first positioning holes. The second positioning holes are rotatably connected to a second fixed bushing 5 for drilling. A positioning groove 7 extending along the width direction is provided on one side of the bottom surface of the first drilling template 1 to avoid the rib structure on the web structure. Tool ball sleeves 6 are provided at the four corners of the top of the first drilling template 1, and are located outside the second positioning holes for tooling inspection.

[0035] like Figure 5As shown, the first positioning mechanism 2 and the second positioning mechanism 3 have the same structure, both including a rotating rod 8, a fixed column 9, a positioning rod 10, a positioning disk 11, and a nut 12. The bottom of the fixed column 9 is fixed with a coaxial positioning rod 10. The lower end of the positioning rod 10 is threaded and connected to the nut 12. The bottom outer periphery of the fixed column 9 is provided with a positioning disk 11. The outer diameter of the positioning disk 11 is larger than the diameter of the first positioning hole to prevent the fixed column 9 from falling into the hole. The fixed column 9, the positioning rod 10, and the nut 12 form a positioning column. Both the first positioning mechanism and the second positioning mechanism include two sets of positioning columns. The two sets of positioning columns are placed in parallel. The rotating rod 8 passes through the top of the two fixed columns 9 to connect the two sets of positioning columns into one unit. In use, the positioning column is inserted into the first positioning hole and the corresponding holes of the web structure and the joint. The positioning rod 10 is slidably connected to the first positioning hole, and the connection of the three is completed by the nut 12.

[0036] Two positioning frames 26 are provided, which are respectively fixed to both ends of the first drilling template 1 on the width side of the top surface by bolts, and are used to position and fix the first drilling template 1 on the frame.

[0037] like Figure 8 and Figure 9 As shown, the fixing mechanism includes a fixed shell 13, a positioning hook 14, a moving column 15, a slider 16, a rotating shaft 17, a threaded rod 18, a displacement motor 19, a transmission worm 20, and a transmission worm wheel 21. The fixed shell 13 is a hollow cylindrical shell, and the moving column 15, rotating shaft 17, threaded rod 18, displacement motor 19, transmission worm 20, and transmission worm wheel 21 are all located inside it. Through holes are made at the center of both end faces of the fixed shell 13, and the displacement motor 19 is fixedly connected to the middle of its inner wall. The output end of the displacement motor 19 is connected to the transmission worm 20. The rotating shaft 17 is arranged axially, and the transmission worm wheel 21 is fixedly surrounding its middle. The transmission worm wheel 21 meshes with the bottom of the transmission worm 20. Threaded rods 18 are fixed to both ends of the rotating shaft 17, and the threads of the two threaded rods 18 have opposite directions. Figure 10As shown; the threaded rod 18 is threaded to a movable column 15 at the end away from the rotating shaft 17, and the movable column 15 can move along the threaded rod 18. Slider blocks 16 are evenly distributed around the outer wall of the movable column 15, allowing the movable column 15 to slide against the inner wall of the fixed shell 13 via the sliders 16. Positioning hooks 14 are fixedly connected to the outer end faces of the two movable columns 15 respectively; one end of each positioning hook 14 is a straight rod and the other end is a bent hook. The straight ends of the two identical positioning hooks 14 pass through the through holes at the center of the end face of the fixed shell 13 and then connect to the movable column 15. 5. Fixed connection; the displacement motor 19 drives the transmission worm gear 20 to rotate, which in turn drives the rotating shaft 17 to rotate through the transmission worm wheel 21, which in turn drives the moving column 15 on the threaded rods 18 on both sides to move relative to each other or back to back, thereby adjusting the distance between the hook ends of the two positioning hooks 14; the two positioning hooks 14 are respectively mounted on the rotating rods 8 in the first positioning mechanism 2 and the second positioning mechanism 3 to lock the first positioning mechanism 2 and the second positioning mechanism 3, preventing the first drilling template 1, the web structure and the joint position from moving due to the loosening of the nut 12.

[0038] like Figure 7 As shown, the central positioning frame 27 is a columnar drill jig, and there are two of them. It is used to drill corresponding holes on the rib structure through the holes already drilled in the web structure and the drill bit. The drilled holes are used for positioning and connection between the second drill jig mechanism and the rib structure. Specifically, after the web structure and the joint are drilled using the first drill jig 1, a central positioning frame 27 is set in each of the two holes at the outermost diagonal of the second positioning hole. After the rib structure is positioned, holes are drilled in the rib structure through the central positioning frame 27. After drilling the holes, the central positioning frame 27 is removed. The central positioning frame 27 is provided with a handle structure for flexible insertion and removal of the central positioning frame 27.

[0039] like Figure 6 As shown, the second drilling jig mechanism includes a second drilling template 22, an inclined surface 23, a third positioning mechanism 24, and a third fixing bushing 25, and is installed below the rib structure. The second drilling template 22 is a rectangle with a length equivalent to that of the first drilling template 1. Its upper surface is an inclined surface 23, which is used to cooperate with the rib structure. The middle of its upper surface has a hole corresponding to the position and number of the first positioning holes on the first drilling template 1. The two ends of the upper surface are provided with third positioning holes. The number and position of the third positioning holes correspond to the second positioning holes on the first drilling template 1. The third fixing bushing 25 is rotatably connected inside the third positioning holes. The third positioning mechanism 24 is installed inside the two third fixing bushings 25 located at opposite corners on the outer side. The structure of the third positioning mechanism 24 is basically the same as that of the first positioning mechanism 2 and the second positioning mechanism 3, except that it has only one set of positioning pins. The third positioning mechanism 24 is used to connect the second drilling template 22 and the rib structure and keep them in contact during the drilling process.

[0040] In use, the web structure and joint are first positioned using a template. The first drilling template 1 is positioned on the web structure using a positioning frame 26 and fixed to the template. Holes are drilled on the web structure and joint through the first positioning hole in the middle of the first drilling template 1. The first positioning mechanism 2 and the second positioning mechanism 3 are then inserted into the holes at both ends, respectively. The first drilling template 1, the web structure, and the joint are connected using nuts 12. Holes are drilled on the web structure and joint through the second positioning holes at both ends of the first drilling template 1. After drilling, the first drilling template 1 is removed. The rib structure is positioned using the template, and two central positioning frames 27 are placed in the two outermost diagonally opposite holes on the web structure. Holes are drilled on the rib structure using the central positioning frames 27. After drilling, the central positioning frames 27 are removed. Using two third positioning mechanisms, the second drilling template 22 is positioned and connected to the rib structure through the holes on the rib structure. Holes are drilled on the rib structure through the holes on the second drilling template 22. After drilling, the second drilling template 22 is removed. This completes the drilling work for the entire web structure, rib structure, and joint, and allows for subsequent steps.

[0041] The above-described embodiments are merely illustrative of the implementation methods of the present invention, but should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the protection scope of the present invention.

Claims

1. A drilling jig fixture, characterized in that, The drilling jig tooling includes a first drilling jig mechanism, a second drilling jig mechanism, and a central positioning frame (27). The first drilling jig mechanism includes a first drilling template (1), a first positioning mechanism (2), a second positioning mechanism (3), and a positioning frame (26), which is installed above the web structure and used for drilling holes in the web structure and joints; the first drilling template (1) is rectangular, and its bottom surface is inclined to match the profile of the top surface of the web structure. Six first positioning holes are opened in the middle of its top surface. The six first positioning holes are evenly distributed in two rows along the length direction of the first drilling template (1). The first positioning mechanism (2) is installed in the two first positioning holes at one end of the length direction of the first drilling template (1), and the second positioning mechanism (3) is installed in the two first positioning holes at the other end. The second positioning holes are evenly distributed at both ends of the top surface of the first drilling template (1), that is, on both sides of the first positioning holes. The first positioning mechanism (2) and the second positioning mechanism (3) have the same structure, both including a rotating rod (8), a fixed column (9), a positioning rod (10) and a nut (12); the bottom of the fixed column (9) is fixed with a coaxial positioning rod (10), the lower end of the positioning rod (10) is threaded and connected to a nut (12); the fixed column (9), the positioning rod (10) and the nut (12) form a positioning column, the first positioning mechanism and the second positioning mechanism both include two sets of positioning columns, the two sets of positioning columns are placed in parallel, the rotating rod (8) passes through the top of the two fixed columns (9) to connect the two sets of positioning columns into one. When in use, the positioning column is inserted into the first positioning hole and the corresponding hole of the web structure and the joint, the positioning rod (10) is slidably connected to the first positioning hole, and the connection of the three is completed by the nut (12); Two positioning frames (26) are provided, which are respectively fixedly connected to the two ends of the top surface of the first drilling template (1) in the width direction, and are used to position and fix the first drilling template (1) on the frame; The central positioning frame (27) is a columnar drill jig, with a total of 2, used to drill corresponding holes on the rib structure through the holes already drilled on the web structure and the joint. The drilled holes are used for the positioning connection between the second drill jig mechanism and the rib structure. The second drilling jig mechanism includes a second drilling template (22), an inclined surface (23), and a third positioning mechanism (24), which are installed below the rib structure. The second drilling template (22) is a rectangle with a length equivalent to that of the first drilling template (1). Its upper surface is an inclined surface (23) for cooperating with the rib structure. The middle of its upper surface has holes corresponding to the position and number of the first positioning holes on the first drilling template (1). The upper surface has third positioning holes at both ends. The number and position of the third positioning holes correspond to the second positioning holes on the first drilling template (1). The third positioning mechanism (24) is installed inside the two third positioning holes located at opposite corners on the outside. The structure of the third positioning mechanism (24) is basically the same as that of the first positioning mechanism (2) and the second positioning mechanism (3). The difference is that it has only one set of positioning pins. The third positioning mechanism (24) is used to connect the second drilling template (22) and the rib structure and keep them in contact during the drilling process. In use, first, the web structure and the joint are positioned using the template. Then, the first drilling template (1) is positioned on the web structure using the positioning frame (26) and fixed on the template. Holes are drilled on the web structure and the joint through the first positioning hole in the middle of the first drilling template (1). Then, the first positioning mechanism (2) and the second positioning mechanism (3) are inserted into the holes at both ends respectively. The first drilling template (1), the web structure and the joint are connected using nuts (12). Holes are drilled on the web structure and the joint through the second positioning holes at both ends of the first drilling template (1). The drilling is then completed. Afterwards, the first drilling template (1) is removed; the two center positioning frames (27) are placed in the two outermost diagonal holes on the web structure through the positioning rib structure of the frame, and the rib structure is drilled through the center positioning frames (27). After drilling, the center positioning frames (27) are removed; the second drilling template (22) is positioned and connected to the rib structure through the holes on the rib structure using two third positioning mechanisms, and the rib structure is drilled through the holes on the second drilling template (22). After drilling, the second drilling template (22) is removed.

2. The drilling jig tooling according to claim 1, characterized in that, The first positioning hole, the second positioning hole and the third positioning hole are respectively rotatably connected to the first fixed bushing (4), the second fixed bushing (5) and the third fixed bushing (25).

3. The drilling jig tooling according to claim 1, characterized in that, The first drilling template (1) has a positioning groove (7) extending along the width direction on one side of its bottom surface, which is used to avoid the rib structure on the web structure.

4. A drilling jig tooling according to claim 1, characterized in that, The first drilling template (1) is provided with tool ball sleeves (6) at the four corners of the top for tooling inspection.

5. A drilling jig tooling according to claim 1, characterized in that, The bottom outer periphery of the fixed column (9) is provided with a positioning disk (11), the outer diameter of the positioning disk (11) is larger than the diameter of the first positioning hole, so as to prevent the fixed column (9) from falling into the hole.

6. A drilling jig tooling according to claim 1, characterized in that, The central positioning frame (27) is provided with a handle structure for flexible placement and removal of the central positioning frame (27).

7. A drilling jig tooling according to claim 1, characterized in that, The drilling jig fixture also includes a fixing mechanism, which includes a fixed shell (13), a positioning hook (14), a moving column (15), a rotating shaft (17), a threaded rod (18), a displacement motor (19), a transmission worm (20), and a transmission worm wheel (21). The fixed shell (13) is a hollow cylindrical shell, and the moving column (15), rotating shaft (17), threaded rod (18), displacement motor (19), transmission worm (20), and transmission worm wheel (21) are all located inside it. Through holes are made at the center of both ends of the fixed shell (13), and the displacement motor (19) is fixedly connected to the middle of its inner wall. The output end of the displacement motor (19) is connected to the transmission worm (20). The rotating shaft (17) is arranged axially, and the transmission worm wheel (21) is fixedly surrounded in its middle. The transmission worm wheel (21) and the transmission worm (20) are connected to each other. The bottom engagement connection is made, and threaded rods (18) are fixed at both ends of the rotating shaft (17), and the threads of the two threaded rods (18) are opposite in direction; the threaded rod (18) is threaded to a movable column (15) at the end away from the rotating shaft (17), and the movable column (15) can move along the threaded rod (18). The outer end faces of the two movable columns (15) are fixedly connected to positioning hooks (14); one end of the positioning hook (14) is a straight rod and the other end is a bent hook. The straight rod ends of the two identical positioning hooks (14) pass through the through hole in the center of the end face of the fixed shell (13) and are fixedly connected to the movable column (15). The two positioning hooks (14) are respectively mounted on the rotating rods (8) in the first positioning mechanism (2) and the second positioning mechanism (3) to realize the locking of the first positioning mechanism (2) and the second positioning mechanism (3).

8. A drilling jig tooling according to claim 7, characterized in that, The movable column (15) is fixed with sliders (16) evenly distributed around its outer wall, so that the movable column (15) and the inner wall of the fixed shell (13) are slidably connected through the sliders (16).

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