A tooling for assembling internal connecting parts of an airfoil

Abstract

This utility model relates to an assembly fixture for an internal wing connector, comprising a wing manufacturing frame, a skin manufacturing mold fixedly attached to the top of the frame, a lower wing skin disposed within the mold groove of the skin manufacturing mold, and two sets of longitudinal, I-shaped support beams fixedly attached to the lower wing skin. An inner support connector is provided between the support beams, and outer support connectors are provided on the outer sides of each beam. The frame is equipped with an assembly fixture for positioning the inner and outer support connectors. The assembly fixture includes a load-bearing beam transversely attached to the frame, a central positioning bracket fixedly attached to the middle of the load-bearing beam, and a rectangular base. An L-shaped support arm is fixedly attached to the upper surface of the base, and a vertical strut is fixedly attached to the rear end of the support arm. This fixture can be installed and fixed on the wing manufacturing frame, and the multiple positioning brackets effectively position and support the internal connectors within the wing, facilitating the assembly of the internal connectors.

Description

Technical fields:

[0001] This utility model relates to the technical field of aircraft component assembly tooling, and more specifically to an assembly tooling for an inner wing connector. Background technology:

[0002] Currently, most light aircraft wings adopt either beam-type or single-piece wings. Beam-type wings rely on spars to bear the main bending moment load and have thinner skin, making them suitable for low-speed light aircraft. Single-piece wings, on the other hand, bear the bending moment through panels composed of thick skin and stringers, resulting in a lighter structure. Existing light aircraft that house fuel tanks within the wing require single-piece wings. In addition to mounting the fuel tank brackets between the stringers, it is also necessary to improve the wing's own support strength. This leads to the development of internal connectors with plate-like structures to enhance the wing's support strength. Therefore, support plates perpendicular to the stringers and the upper and lower wing skins are designed. These support plates are then bonded and fixed to the upper and lower skins and stringers using a mixture of adhesive and resin. During the bonding process and while waiting for the mixture to cure and fully connect the internal connectors, effective positioning support is needed to facilitate displacement. Therefore, corresponding positioning fixtures need to be designed. Utility Model Content:

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by providing a tooling for assembling internal connecting parts of an airfoil. This tooling can be installed and fixed on the frame used to manufacture the airfoil. Through several positioning brackets, it can effectively position and support the internal connecting parts inside the airfoil, facilitating the assembly of the internal connecting parts.

[0004] A wing inner connector assembly fixture includes a wing frame, a skin fabrication mold fixed to the top of the frame, a lower wing skin set in the mold groove of the skin fabrication mold, two sets of longitudinal, I-shaped support beams fixed to the lower wing skin, an inner support connector between the support beams and an outer support connector on each side, and an assembly fixture on the frame to assist in positioning the inner and outer support connectors, the assembly fixture including a load-bearing beam transversely fixed to the frame, a middle positioning bracket fixed to the middle of the load-bearing beam, the middle positioning bracket including a rectangular base, an L-shaped support arm fixed to the upper surface of the base, and a vertical strut fixed to the rear end of the support arm; the inner support connectors are respectively formed with upper and lower distributed, longitudinally arranged first studs, the front ends of the first studs passing through the upper and lower ends of the struts and screwed with first nuts, the struts clamping and fixing between the first nuts and the inner support connectors;

[0005] Vertical rectangular positioning seats are fixed to the load-bearing beams on both sides of the intermediate positioning bracket. A longitudinal support column is inserted and fixed to the upper end of the positioning seat. The rear end of the support column abuts against the outer support connector and is formed with a second stud. The second stud passes through the outer support connector and is screwed and fixed with a second nut.

[0006] Preferably, the load-bearing beam abuts against the front end face of the vehicle frame, and longitudinal third studs are inserted into both ends of the load-bearing beam. A third nut is screwed to the front end of the third stud, and the third nut abuts against the front end face of the load-bearing beam; the rear end of the third stud is fixed to the vehicle frame.

[0007] Preferably, the supporting beam between the third studs is formed with a transverse adjustment groove that extends through the upper and lower end faces of the supporting beam;

[0008] The lower ends of the base and the positioning seat are provided with gaps between them and the bearing beam. The lower ends of the base and the positioning seat are respectively fixed with a base plate. A vertical screw is fixed in the middle of the base plate. The screw passes through the adjustment groove of the bearing beam and is screwed with a fourth nut. The fourth nut presses against the lower end face of the bearing beam.

[0009] The base and positioning seat have L-shaped adjusting brackets on both sides. The lower end of the adjusting bracket abuts against the upper end of the supporting beam. A vertical slot is formed in the middle of the side wall of the adjusting bracket. Insert plates are formed on both sides of the base plate. The insert plates pass through the slots of the adjusting brackets to form horizontal limiting plates. The limiting plates abut against the side walls of the adjusting brackets. An adjusting nut is fixed to the upper end of the limiting plate. A vertical height adjusting bolt is screwed onto the adjusting nut. The lower end of the height adjusting bolt passes through the limiting plate and abuts against the adjusting bracket.

[0010] Preferably, the width of the adjusting groove on the bearing beam is equal to the diameter of the screw.

[0011] Preferably, both the inner support connector and the outer support connector include a vertical support plate, and the outer ring of the support plate is formed with a frame, which is glued to the lower skin and the support beam respectively.

[0012] The inner support connector has a rectangular slot formed on its support plate, and the first studs are distributed on the upper and lower sides of the slot. The outer support connector has a circular through hole formed on its support plate, and the inner support connector on one side of the through hole has an insertion hole opposite to the second stud.

[0013] Preferably, connecting plates are glued and fixed to the grooves on both sides of the support beam. The connecting plates abut against the frames of the inner support connector and the outer support connector and are glued and fixed to the inner support connector and the outer support connector respectively.

[0014] The beneficial effects of this utility model are as follows:

[0015] This tooling can be installed and fixed on the frame for manufacturing wings. Through several positioning brackets, it can effectively position and support the internal connecting parts inside the wing, facilitating the assembly of the internal connecting parts. Attached image description:

[0016] Figure 1 This is a front view structural diagram of the present invention;

[0017] Figure 2 This is a partial top view of the structure of this utility model;

[0018] Figure 3 This is a cross-sectional view of the rear view of this utility model.

[0019] In the diagram: 1. Frame; 2. Skin fabrication mold; 3. Lower skin; 4. Support beam; 5. Inner support connector; 51. First stud; 6. Outer support connector; 7. Load-bearing beam; 71. Adjustment groove; 8. Intermediate positioning bracket; 81. Base; 82. Support arm; 83. Support rod; 9. Support column; 91. Second stud; 10. Positioning seat; 11. Second nut; 12. First nut; 13. Adjustment bracket; 131. Slot; 14. Base plate; 141. Insert plate; 142. Limiting plate; 15. Adjusting nut; 16. Height adjustment bolt; 17. Screw; 18. Fourth nut; 19. Reinforcing rib plate; 20. Third stud; 21. Third nut; 22. Connecting plate. Detailed implementation method:

[0020] Example: See Figures 1 to 3 As shown, a wing inner connector assembly fixture includes a wing frame 1, a skin fabrication mold 2 fixedly attached to the top of the frame 1, a lower wing skin 3 disposed within the mold groove of the skin fabrication mold 2, and two sets of longitudinal, I-shaped support beams 4 fixedly attached to the lower wing skin 3. An inner support connector 5 is provided between the support beams 4, and outer support connectors 6 are respectively provided on the outer sides. The frame 1 is equipped with an assembly fixture for positioning the inner support connectors 5 and the outer support connectors 6. The assembly fixture is laterally fixed to the frame 1. The supporting beam 7 has a middle positioning bracket 8 fixedly connected to its middle part. The middle positioning bracket 8 includes a rectangular base 81, an L-shaped support arm 82 fixedly connected to the upper end surface of the base 81, and a vertical strut 83 fixedly connected to the rear end of the support arm 82. The inner support connector 5 has first studs 51 formed on its upper and lower parts and arranged longitudinally. The front end of the first stud 51 passes through the upper and lower ends of the strut 83 and is screwed with a first nut 12. The strut 83 is clamped and fixed between the first nut 12 and the inner support connector 5.

[0021] Vertical rectangular positioning seats 10 are fixed to the bearing beams 7 on both sides of the intermediate positioning bracket 8. A longitudinal support column 9 is inserted and fixed to the upper end of the positioning seat 10. The rear end of the support column 9 abuts against the outer support connector 6 and is formed with a second stud 91. The second stud 91 passes through the outer support connector 6 and is screwed and fixed with a second nut 11.

[0022] The load-bearing beam 7 abuts against the front end face of the frame 1. Longitudinal third studs 20 are inserted into both ends of the load-bearing beam 7. A third nut 21 is screwed to the front end of the third stud 20 and abuts against the front end face of the load-bearing beam 7. The rear end of the third stud 20 is fixed to the frame 1. The load-bearing beam 7 can be disassembled. That is, when manufacturing the lower skin 3 of the wing, the assembly tooling can be removed to avoid interference.

[0023] An adjustment groove 71 is formed on the bearing beam 7 between the third studs 20, which is transverse and penetrates the upper and lower end faces of the bearing beam 7;

[0024] The lower ends of the base 81 and the positioning seat 10 are provided with gaps between them and the bearing beam 7. The lower ends of the base 81 and the positioning seat 10 are respectively fixed with a base plate 14. A vertical screw 17 is fixed in the middle of the base plate 14. The screw 17 passes through the adjustment groove 71 of the bearing beam 7 and is screwed with a fourth nut 18. The fourth nut 18 presses against the lower end face of the bearing beam 7.

[0025] The base 81 and the positioning seat 10 have L-shaped adjusting brackets 13 abutting against their respective side walls. The lower end face of the adjusting bracket 13 abuts against the upper end face of the supporting beam 7. A vertical slot 131 is formed in the middle of the side wall of the adjusting bracket 13. Insert plates 141 are formed on both sides of the base plate 14. The insert plates 141 pass through the slots 131 of the adjusting bracket 13 to form a horizontal limiting plate 142. The limiting plate 142 abuts against the side wall of the adjusting bracket 13. An adjusting nut 15 is fixed to the upper end face of the limiting plate 142. A vertical height adjusting bolt 16 is screwed onto the adjusting nut 15. The lower end of the height adjusting bolt 16 passes through the limiting plate 142 and abuts against the adjusting bracket 13. The above structure can realize the lifting and horizontal movement of the intermediate positioning bracket 8 and the support column 9 through the height adjusting bolt 16 and the fourth nut 18, which facilitates the position adjustment of the inner support connector 5 and the outer support connector 6 of various sizes.

[0026] The width of the adjusting groove 71 on the bearing beam 7 is equal to the diameter of the screw 17; triangular reinforcing ribs 19 are fixed to the adjusting brackets 13 on the front and rear sides of the limiting plate 142, respectively.

[0027] Both the inner support connector 5 and the outer support connector 6 include vertical support plates. The outer ring of each support plate is formed with a frame, which is glued to the lower skin 3 and the support beam 4 respectively. The support plate of the inner support connector 5 is formed with a rectangular slot, and the first stud 51 is distributed on the upper and lower sides of the slot. The support plate of the outer support connector 6 is formed with a circular through hole. The inner support connector 5 on one side of the through hole is formed with an insertion hole opposite to the second stud 91. Compared with a single side, the frame can increase the contact area, thereby increasing the connection strength after glued fixation, and indirectly increasing the support strength of the wing.

[0028] Connecting plates 22 are glued and fixed to the grooves on both sides of the support beam 4. The connecting plates 22 abut against the frames of the inner support connector 5 and the outer support connector 6 respectively and are glued and fixed together with the inner support connector 5 and the outer support connector 6 respectively. Adding connecting plates 22 can also effectively improve the support strength of the wing.

[0029] Working principle: This structure is an assembly fixture for internal wing connectors. The internal connectors within the wing are divided into internal support connectors 5 and external support connectors 6. The support beam 4 is a stringer within the wing. The assembly fixture consists of a load-bearing beam 7, an intermediate positioning bracket 8, a positioning seat 10, and a support column 9. The external support connector 6 can be fixedly connected to the support column 9 of the positioning seat 10, while the internal support connector 5 is fixed to the intermediate positioning bracket 8. Then, it is fixed to the frame 1 that supports the lower skin 3 through the load-bearing beam 7. This allows the internal support connector 5 and the external support connector 6 to be positioned and set inside the wing, facilitating the bonding connection between the internal support connector 5 and the external support connector 6 and the lower skin 3 and the support beam 4, respectively.

[0030] The embodiments described herein are illustrative and not intended to limit the scope of the invention. Any person skilled in the art can modify the embodiments without departing from the spirit and scope of the invention; therefore, the scope of protection of the invention should be as set forth in the claims.

Claims

1. A wing inner connector assembly fixture, comprising a wing frame (1), a skin fabrication mold (2) fixedly connected to the top of the frame (1), a lower skin (3) of the wing being disposed in the mold groove of the skin fabrication mold (2), two sets of longitudinal support beams (4) in the shape of an "I" fixedly connected to the lower skin (3), an inner support connector (5) being provided between the support beams (4), and outer support connectors (6) being provided on the outer sides respectively, wherein the frame (1) is provided with an assembly fixture for positioning the inner support connector (5) and the outer support connector (6), characterized in that: The assembly fixture includes a load-bearing beam (7) that is transversely fixed to the frame (1). A middle positioning bracket (8) is fixed to the middle part of the load-bearing beam (7). The middle positioning bracket (8) includes a rectangular base (81). An L-shaped support arm (82) is fixed to the upper surface of the base (81). A vertical strut (83) is fixed to the rear end of the support arm (82). The inner support connector (5) is formed with first studs (51) that are distributed vertically and arranged vertically. The front end of the first stud (51) passes through the upper and lower ends of the strut (83) and is screwed with a first nut (12). The strut (83) is clamped and fixed between the first nut (12) and the inner support connector (5). Vertical rectangular positioning seats (10) are fixed to the bearing beams (7) on both sides of the intermediate positioning bracket (8). A longitudinal support column (9) is inserted and fixed to the upper end of the positioning seat (10). The rear end of the support column (9) abuts against the outer support connector (6) and is formed with a second stud (91). The second stud (91) passes through the outer support connector (6) and is screwed and fixed with a second nut (11).

2. The wing inner connecting component assembly fixture according to claim 1, characterized in that: The load-bearing beam (7) abuts against the front end face of the frame (1). The two ends of the load-bearing beam (7) are respectively inserted with longitudinal third studs (20). The front end of the third stud (20) is screwed with a third nut (21), and the third nut (21) abuts against the front end face of the load-bearing beam (7). The rear end of the third stud (20) is fixed to the frame (1).

3. The wing inner connecting component assembly fixture according to claim 1, characterized in that: The support beam (7) between the third studs (20) has an adjustment groove (71) formed horizontally and penetrating the upper and lower end faces of the support beam (7); The lower ends of the base (81) and the positioning seat (10) are provided with gaps between them and the bearing beam (7). The lower ends of the base (81) and the positioning seat (10) are respectively fixed with a base plate (14). A vertical screw (17) is fixed in the middle of the base plate (14). The screw (17) passes through the adjustment groove (71) of the bearing beam (7) and is screwed with a fourth nut (18). The fourth nut (18) presses against the lower end face of the bearing beam (7). The base (81) and the positioning seat (10) have L-shaped adjustment brackets (13) abutting against each other on their side walls. The lower end face of the adjustment bracket (13) abuts against the upper end face of the bearing beam (7). A vertical slot (131) is formed in the middle of the side wall of the adjustment bracket (13). Insert plates (141) are formed on both sides of the base plate (14). The insert plates (141) pass through the slots (131) of the adjustment bracket (13) to form a horizontal limiting plate (142). The limiting plate (142) abuts against the side wall of the adjustment bracket (13). An adjustment nut (15) is fixedly connected to the upper end face of the limiting plate (142). A vertical height adjustment bolt (16) is screwed onto the adjustment nut (15). The lower end of the height adjustment bolt (16) passes through the limiting plate (142) and abuts against the adjustment bracket (13).

4. The wing inner connecting component assembly fixture according to claim 3, characterized in that: The width of the adjusting groove (71) on the bearing beam (7) is equal to the diameter of the screw (17).

5. The wing inner connecting component assembly fixture according to claim 1, characterized in that: The inner support connector (5) and the outer support connector (6) both include vertical support plates. The outer ring of the support plate is formed with a frame, and the frame is glued to the lower skin (3) and the support beam (4) respectively. The inner support connector (5) has a rectangular slot formed on its support plate, and the first stud (51) is distributed on the upper and lower sides of the slot. The outer support connector (6) has a circular through hole formed on its support plate, and the inner support connector (5) on one side of the through hole has an insertion hole opposite to the second stud (91).

6. The wing inner connecting component assembly fixture according to claim 5, characterized in that: Connecting plates (22) are glued and fixed in the grooves on both sides of the support beam (4). The connecting plates (22) abut against the frames of the inner support connector (5) and the outer support connector (6) respectively and are glued and fixed together with the inner support connector (5) and the outer support connector (6) respectively.

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