Flap overlap amount measuring and marking tool

Abstract

The invention discloses a marking tool for measuring the overlap amount of flaps. The marking tool comprises a paintbrush fixing support, a marker post, a first scale, a paintbrush and a positioning support with a first graduated scale. The positioning support comprises a first positioning part used for being in positioning fit with the lower surface of a wing and a second positioning part used for being in positioning fit with the front edge of a flap. The marker post is slidably arranged on the positioning support. The first scale is fixed to the end of the marker post and used for indicating the first graduated scale. The paintbrush is installed at the other end, away from the first ruler scale, of the marker post through the paintbrush fixing support and located above the first ruler scale, and the pen point of the paintbrush corresponds to the indicating tip of the first ruler scale. A positioning reference is provided for flap overlap amount measurement through dual positioning cooperation of the positioning support, the lower surface of the wing and the front edge of the flap, mechanical linkage of measurement and lineation is achieved through cooperation with the marker post arranged in a sliding mode, the reading of the first scale corresponds to the lineation of a painting brush in structure, accumulative errors generated by traditional manual size transfer are eliminated, and the measurement accuracy is improved. The scribing precision is ensured.

Description

Technical Field

[0001] This invention relates to the field of aircraft manufacturing technology, and in particular to a tool for measuring flap overlap. Background Technology

[0002] As a key lift-enhancing device in modern aircraft wing systems, the assembly quality of flaps directly affects the aerodynamic performance and flight safety of aircraft. During the assembly of the wing and flaps, flap overlap is a crucial geometric control parameter. Flap overlap refers to the longitudinal dimension of the overlapping area between the flap and the main wing structure in the closed state, usually expressed as a percentage of the wing chord length. This parameter characterizes the degree of longitudinal overlap between the leading edge of the flap and the trailing edge of the wing, and together with gap, constitutes the core geometric constraint for multi-segment airfoil aerodynamic design. Precise control of flap overlap has a decisive impact on aircraft performance. In the aerospace manufacturing field, flap overlap must strictly comply with design tolerance requirements, typically controlled within the range of 1% to 5% of the wing chord length. Its assembly accuracy directly determines the overall performance and airworthiness safety of the aircraft.

[0003] Currently, the industry primarily relies on traditional manual methods for measuring and scribing flap overlap. Specifically, operators use general measuring tools such as steel rulers and calipers to measure the target dimensions on the lower surface or internal structure of the wing. The measurement data is then transferred to the upper wing skin for scribing and positioning via visual inspection or auxiliary markings. Because this method separates the measurement and scribing processes, cumulative errors are difficult to control, scribing accuracy is low, and operational efficiency is low, making it difficult to meet the technical requirements of high-precision assembly.

[0004] In other words, there is a lack of specialized tools in the current technology that can achieve integrated measurement and marking operations to simultaneously meet the requirements of high precision, high efficiency and high consistency in flap overlap detection. Summary of the Invention

[0005] To address the aforementioned problems, this invention proposes a flap overlap measurement scribing tool to achieve integrated measurement and scribing operations, improve scribing accuracy and assembly efficiency, reduce human error, and thus meet the high-precision assembly requirements of the aerospace field.

[0006] The technical solution adopted in this invention is as follows:

[0007] This application provides a tool for measuring and marking flap overlap, used to determine the amount of flap overlap relative to the wing, including a positioning bracket, a marker, a first ruler, a pen, and a pen fixing bracket. The positioning bracket includes a first positioning part and a second positioning part. The first positioning part is used to position and cooperate with the lower surface of the wing, and the second positioning part is used to position and cooperate with the leading edge of the flap. The positioning bracket is provided with a first scale. The marker is slidably mounted on the positioning bracket, and the sliding direction includes the length direction of the first scale. The first scale is fixedly mounted on one end of the marker. The first scale is used to cooperate with the indication of the first scale. The second positioning part, which is used to cooperate with the positioning of the leading edge of the flap, corresponds to the reference of the first scale. The paintbrush is mounted on the marker via the paintbrush mounting bracket. The paintbrush is positioned above the first ruler and is used to draw lines on the upper surface of the wing skin. The tip of the paintbrush corresponds to the indicator tip of the first ruler.

[0008] The flap overlap measurement scribing tool provided in this application provides a positioning reference for flap overlap measurement through the dual positioning cooperation of the positioning bracket and the lower surface of the wing and the leading edge of the flap. With the help of the sliding scale rod, the measurement and scribing are mechanically linked, so that the reading of the first scale corresponds to the scribing line in structure. This eliminates the cumulative error caused by traditional manual dimension transfer and realizes the integrated operation of flap overlap measurement and scribing. While ensuring scribing accuracy, it significantly improves assembly efficiency.

[0009] In actual use, the excess skin on the wing is cut along the line drawn by the pen on the upper surface of the wing skin to obtain the overlap amount of the flap setting value.

[0010] In an optional embodiment, a marker locking member is also included, which is disposed on the marker and is used to lock the marker to the positioning bracket after the marker slides to the desired position.

[0011] The marker is slidably mounted on the positioning bracket, and the marker can be fixed on the positioning bracket by the marker locking part (marker locking screw), so that the marker can be moved and fixed on the positioning bracket at a preset size position, and when drawing lines on the wing skin with a pen, it can avoid positional shift after adjustment, thus ensuring the consistency of the measurement and drawing.

[0012] In an optional embodiment, the positioning bracket includes a lateral positioning arm and a longitudinal positioning arm connected together, the first positioning part being the upper surface of the lateral positioning arm, and the upper surface of the lateral positioning arm being adapted to the lower surface profile of the wing. The second positioning part is the inner surface of the longitudinal positioning arm near the transverse positioning arm, and the inner surface of the longitudinal positioning arm near the transverse positioning arm is adapted to the leading edge profile of the flap.

[0013] The two positioning surfaces of the positioning bracket are adapted to the lower surface of the wing and the leading edge profile of the flap, respectively, which can provide a stable measurement reference to ensure stable and reliable positioning.

[0014] In an optional embodiment, the first scale is disposed on the outer wall of the lateral positioning arm; The positioning bracket has a sliding through hole on its lateral positioning arm, and the sliding through hole has a side outlet that penetrates the side wall of the lateral positioning arm. The marker is slidably disposed within the sliding perforation, and the first scale extends out of the sliding perforation through the side outlet and is configured to cooperate with the indication of the first scale.

[0015] In an optional embodiment, the reference of the first scale is the positioning surface of the second positioning part used for positioning and engaging with the leading edge of the flap; The accuracy of the first scale is not less than 0.1 mm.

[0016] In an optional embodiment, the rod is provided with a second scale and a second ruler, the second ruler being fixed on the positioning bracket and used to cooperate with the indication of the second scale. The scale direction of the second scale is opposite to that of the first scale, and the reading of the second scale on the second scale corresponds to the reading of the first scale on the first scale.

[0017] In an optional embodiment, the brush holder is detachably connected to the marker.

[0018] The pen holder is detachably connected to the marker rod to facilitate the assembly of the flap overlap measurement scribing tool during use. The wing and flaps have a vertical gap at the overlapping portion. In actual use, the lateral positioning arm of the positioning bracket extends from this gap, and the pen holder is connected to the extended lateral positioning arm for scribing measurement.

[0019] In an optional embodiment, the brush holder includes a horizontal fixing arm and a vertical fixing arm connected to each other. The horizontal fixing arm has a brush mounting structure for mounting a brush at the end away from the vertical fixing arm, and the end of the vertical fixing arm away from the vertical fixing arm is connected to the marker.

[0020] In an optional embodiment, the marker has a connecting end for connecting to the brush holder, the connecting end being located outside the positioning bracket; It also includes a bracket connector, wherein the end of the longitudinal fixed arm away from the longitudinal fixed arm is connected to the connecting end of the marker pole through the bracket connector.

[0021] In an optional embodiment, a wear-resistant bushing is also included. Rotary mounting holes are respectively provided on the longitudinal fixing arm of the brush fixing bracket and the connecting end of the marker rod, and the wear-resistant bushing is installed in the rotary mounting holes. The bracket connector includes a connecting pin, which is disposed inside the wear-resistant bushing and rotatably connects the longitudinal fixed arm of the paintbrush fixing bracket to the connecting end of the marker.

[0022] The beneficial effects of this invention are: (1) The flap overlap measurement scribing tool provided in this application provides a positioning reference for flap overlap measurement through the dual positioning cooperation of the positioning bracket and the lower surface of the wing and the leading edge of the flap. With the sliding setting of the scale rod, the mechanical linkage between measurement and scribing is realized, so that the reading of the first scale corresponds to the scribing of the pen in structure. This eliminates the cumulative error caused by traditional manual transfer of dimensions and realizes the integrated operation of flap overlap measurement and scribing. While ensuring scribing accuracy, it significantly improves assembly efficiency.

[0023] (2) Furthermore, the marker is slidably mounted on the positioning bracket, and the marker can be fixed on the positioning bracket by the marker locking part (marker locking screw), so that the marker can be moved and fixed on the positioning bracket at a preset size position, and when drawing lines on the skin of the wing with a pen, the position shift after adjustment can be avoided, so as to ensure the consistency of the measurement line.

[0024] (3) Furthermore, the two positioning surfaces of the positioning bracket are adapted to the lower surface of the wing and the leading edge profile of the flap, respectively, which can provide a stable measurement reference to ensure stable and reliable positioning.

[0025] (4) The pen fixing bracket is detachably connected to the marker rod to facilitate the assembly of the flap overlap measurement marking tool during use. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the flap overlap measurement scribing tool in the main view direction according to an embodiment of this application; Figure 2 This is a schematic diagram of the axial direction of the flap overlap measurement scribing tool according to an embodiment of this application; Figure 3 yes Figure 2 A magnified schematic diagram of the structure of part A in the diagram; Figure 4 This is a schematic diagram of the axial structure of the flap overlap measurement scribing tool used for scribing on the wing according to an embodiment of this application; Figure 5 yes Figure 4 A magnified schematic diagram of the partial structure of B in the diagram; Figure 6This is a front view schematic diagram of the flap overlap measurement scribing tool used on an aircraft wing according to an embodiment of this application.

[0027] The labels for the attached figures are as follows: 1. Positioning bracket; 11. Lateral positioning arm; 111. Sliding perforation; 112. Movable slot; 113. First positioning part; 12. Longitudinal positioning arm; 121. Second positioning part; 13. First scale; 2. Marker; 21. Second scale; 22. Marker locking part; 23. Mounting slot; 3. First ruler mark; 31. Indicator tip; 32. Fastener; 4. Pen; 41. Pen locking screw; 5. Pen fixing bracket; 51. Lateral fixing arm; 52. Longitudinal fixing arm; 6. Second ruler mark; 7. Bracket connector; 8. Wing; 81. Lower surface of wing; 9. Flap; 91. Leading edge of flap; 92. Clearance. Detailed Implementation

[0028] The present invention will now be described in detail with reference to the accompanying drawings.

[0029] The main reason why existing traditional manual measurement methods have difficulty controlling cumulative errors is that traditional methods require manual transfer of dimensional data. During the spatial transformation from the measurement position to the scribing position, parallax, reading and marking deviations are easily introduced, resulting in a significant reduction in scribing accuracy, which makes it difficult to meet the technical requirements of high-precision assembly.

[0030] Traditional manual measurement methods struggle to establish stable and repeatable measurement benchmarks, further exacerbating the uncertainty of measurement results. Furthermore, because the scribing positions cannot accurately reproduce the measurement benchmark, the actual overlap of the flaps after assembly often exceeds the design tolerances, requiring secondary rework and adjustments, significantly increasing production costs and delivery time.

[0031] Therefore, please refer to Figures 1-6 This application provides a tool for measuring and marking flap overlap, used to determine the amount of overlap between wing 8 and flap 9, including a positioning bracket 1, a marker 2, a first ruler 3, a pen 4, and a pen fixing bracket 5. The positioning bracket 1 includes a first positioning part 113 and a second positioning part 121. The first positioning part 113 is used to position and cooperate with the lower surface 81 of the wing, and the second positioning part 121 is used to position and cooperate with the leading edge 91 of the flap. A first scale 13 is provided on the positioning bracket 1. The pointer 2 is slidably mounted on the positioning bracket 1, and the sliding direction includes the length direction of the first scale 13. The first scale 3 is fixedly mounted on one end of the pointer 2. The first scale 3 is used to cooperate with the first scale 13 for indication. The second positioning part 121, which is used to cooperate with the leading edge 91 of the flap, corresponds to the reference of the first scale 13. The pen 4 is mounted on the other end of the scale 2 away from the first scale 3 via the pen fixing bracket 5. The pen 4 is positioned above the first scale 3 and is used to draw lines on the upper surface of the skin of the wing 8. The tip of the pen 4 corresponds to the indicator tip 31 of the first scale 3: the scale value indicated by the first scale 3 corresponds one-to-one with the position of the pen tip of the pen 4 (please refer to...). Figure 1 and Figure 6 ).

[0032] The line drawn by the tip of brush 4 corresponds to the edge of the overlapping area of ​​the flaps on the wing (and is the edge away from the leading edge of the flaps), and the width of the partially overlapping area corresponds to the scale value indicated by the first scale 3.

[0033] Please refer to Figure 6 In actual use, the excess skin on the wing (the skin of the area with a width of b) is cut along the line drawn by the pen on the upper surface of the wing skin to obtain flaps with a set overlap amount, the flap overlap amount being a (the value indicated by the first scale 3).

[0034] The flap overlap measurement scribing tool provided in this application provides a positioning reference for flap overlap measurement through the dual positioning cooperation of the positioning bracket 1 with the lower surface 81 of the wing and the leading edge 91 of the flap. With the help of the sliding scale 2, the measurement and scribing are mechanically linked, so that the reading of the first scale 3 corresponds to the scribing of the pen 4 in structure. This eliminates the cumulative error caused by traditional manual dimension transfer and realizes the integrated operation of flap overlap measurement and scribing. While ensuring scribing accuracy, it significantly improves assembly efficiency.

[0035] Please refer to Figure 3 In one embodiment, the first scale 3 is a sheet-like structure with an indicator tip 31, which is used to engage with the first scale 13; the end away from the indicator tip 31 is fixed to the scale rod 2 by a fastener 32. The thickness of the indicator tip 31 does not exceed 1 mm.

[0036] In one specific embodiment, the first scale 13 is located on the outer side (plane) of the transverse positioning arm 11, and the rod 2 has a mounting slot 23. The first scale 3 is set in the mounting slot 23 and fixed to the rod 2, so as to reduce the volume, facilitate sliding and improve the accuracy of indication.

[0037] In another specific embodiment, the first ruler 3 and the ruler 2 can be integrally formed. In this case, the ruler 2 is set in segments or the sliding through hole 111 of the positioning bracket 1 can facilitate the passage of the first ruler 3.

[0038] In one embodiment, a marker locking member 22 is also included. The marker locking member 22 is disposed on the marker 2. When the marker 2 slides to the desired position, the marker locking member 22 is used to lock and fix the marker 2 on the positioning bracket 1.

[0039] The marker 2 is slidably mounted on the positioning bracket 1, and the marker 2 can be fixed on the positioning bracket 1 by the marker locking part 22 (marker locking screw), so that the marker 2 can be moved and fixed on the positioning bracket 1 at a preset size position, and when the pen 4 is used to draw lines on the skin of the wing 8, the position can be avoided after adjustment, so as to ensure the consistency of the measurement and drawing.

[0040] In one embodiment, the marker locking member 22 is a marker locking screw. The positioning bracket 1 is provided with a threaded hole corresponding to the marker locking screw. The marker locking screw is threaded into the threaded hole. The marker locking screw is tightened inward and abuts against the marker 2 to lock the marker 2. The marker locking screw is loosened outward to release the marker 2, so that the marker 2 can slide relative to the positioning bracket 1.

[0041] In another embodiment, the marker locking member 22 can also be a locking pin. Locking pin holes are respectively provided on the positioning bracket 1 and the marker 2. The locking pin is inserted into the locking pin holes on the positioning bracket 1 and the marker 2 to lock the marker 2. Multiple locking pin holes can be provided on the marker 2, spaced apart along the length of the marker 2.

[0042] In another embodiment, the marker locking member 22 can also be a locking clamp, with one end of the locking clamp fixed on the positioning bracket 1 and the other end used to clamp the marker 2.

[0043] In one embodiment, the positioning bracket 1 includes a transverse positioning arm 11 and a longitudinal positioning arm 12 connected to each other. The first positioning part 113 is the upper surface of the transverse positioning arm 11, and the upper surface of the transverse positioning arm 11 is adapted to the lower surface profile of the wing 8. The second positioning part 121 is the inner surface of the longitudinal positioning arm 12 near the transverse positioning arm 11, and the inner surface of the longitudinal positioning arm 12 near the transverse positioning arm 11 is adapted to the leading edge profile of the flap 9.

[0044] The two positioning surfaces of the positioning bracket 1 are adapted to the lower surface of the wing and the leading edge profile of the flap 9, respectively, which can provide a stable measurement reference to ensure stable and reliable positioning.

[0045] In one specific embodiment, the upper surface of the lateral positioning arm 11 includes an arcuate surface. The inner surface of the longitudinal positioning arm 12 near the lateral positioning arm 11 includes an arcuate surface and a vertical surface connected to the arcuate surface.

[0046] In another specific embodiment, the inner surface of the longitudinal positioning arm 12 near the transverse positioning arm 11 includes a concave arc surface that is fully adapted to the leading edge profile of the flap 9.

[0047] In one specific embodiment, the positioning bracket 1 is a positioning bracket 1 made of No. 45 steel.

[0048] In one embodiment, a first scale 13 is disposed on the outer wall of a transverse positioning arm 11; the transverse positioning arm 11 of the positioning bracket 1 has a sliding through hole 111 and a movable slot 112 communicating with the sliding through hole 111; the rod 2 is slidably disposed in the sliding through hole 111; and the first scale 3 is engaged with the first scale 13 through the movable slot 112.

[0049] In one specific embodiment, the movable slot 112 extends through the two opposite sides of the transverse positioning arm 11. A first scale 13 is respectively provided on the outer wall of each of the two opposite sides, and two first ruler marks 3 are respectively provided on each of the two first scale marks 13 (the two first ruler marks 3 can be two branches of the first ruler mark 3). Correspondingly, two second scales 21 are also set on the scale 2 (two first scales 13), and two second scales 21 are also set with two second scale marks 6 (the two second scale marks 6 can be two branches of the second scale). This setup is designed to facilitate observation from both sides.

[0050] In another embodiment, the first scale 13 is disposed on the outer wall of the transverse positioning arm 11; The transverse positioning arm 11 of the positioning bracket 1 has a sliding through hole 111, and the sliding through hole 111 has a side outlet that penetrates the side wall of the transverse positioning arm 11. The marker 2 is slidably set in the sliding hole 111, and the first scale 3 extends out of the sliding hole 111 through the side outlet and is set in conjunction with the first scale 13.

[0051] In another embodiment, the width of the side outlet is less than or equal to the radial dimension of the sliding perforation 111, so that the marker 2 slides stably within the sliding perforation 111.

[0052] In another embodiment, the side outlet extends axially along the sliding perforation 111 and is located on the entire side wall of the transverse positioning arm 11 (in which case the sliding perforation 111 can be configured as a sliding groove), or on a portion of the side wall of the transverse positioning arm 11.

[0053] In another specific embodiment, the two opposite sides of the sliding perforation 111 are respectively provided with side outlets, and the outer side walls of the transverse positioning arm 11 and the two side outlets are respectively provided with first scale rulers 13.

[0054] In fact, both the side outlet and the movable slot are designed to provide space for the first scale to move.

[0055] In one embodiment, the reference (0 mark) of the first scale 13 is the positioning surface of the second positioning part 121 for positioning and engaging with the leading edge of the flap 9 (this positioning surface is perpendicular to the length direction of the first scale). The accuracy of the first scale 13 is no less than 0.1mm.

[0056] In one embodiment, the scale rod 2 is provided with a second scale 21 and also includes a second scale mark 6, which is fixed on the positioning bracket 1 and used to cooperate with the second scale 21 for indication. The scale direction of the second scale 21 is opposite to that of the first scale 13, and the reading of the second scale 6 on the second scale 21 corresponds to the reading of the first scale 3 on the first scale 13.

[0057] In one embodiment, the reference of the second scale 21 is close to the side of the pen fixing bracket 5, and the accuracy of the second scale 21 is not less than 0.1mm.

[0058] In one embodiment, the overlapping end face of the positioning bracket 1 and the rod 2 is the second scale 6. This overlapping end face is perpendicular to the length direction of the second scale. The reading displayed on the second scale by the overlapping end face corresponds to the reading displayed on the first scale 13 by the first scale 3.

[0059] In another embodiment, one end of the second scale 6 is fixed to the positioning bracket 1, and the other end extends out of the positioning bracket 1 to cooperate with the second scale 21 on the positioning bracket 1.

[0060] In another specific embodiment, the second scale 6 is a sheet-like structure with an indicator tip 31, which is used to engage with the second scale 21. The end away from the indicator tip 31 is fixed to the positioning bracket 1 by a fastener 32. The thickness of the indicator tip 31 does not exceed 1 mm in order to improve the accuracy of scale reading.

[0061] In one embodiment, the pen holder 5 is detachably connected to the marker 2.

[0062] The pen holder 5 and the marker 2 are detachably connected to facilitate the assembly of the flap overlap measurement marking tool during use. The wing 8 and flap 9 have a vertical gap 92 at their overlapping portion (please refer to...). Figure 5 In actual use, the lateral positioning arm 11 of the positioning bracket 1 extends out from the gap 92, and the drawing pen fixing bracket 5 is connected to the extended lateral positioning arm 11 for line drawing measurement.

[0063] In one embodiment, the pen holder 5 includes a horizontal fixing arm 51 and a vertical fixing arm 52 connected to each other. The horizontal fixing arm 51 has a pen mounting structure for mounting the pen 4 at the end away from the vertical fixing arm 52. The end of the vertical fixing arm 52 away from the vertical fixing arm 52 is connected to the marker 2.

[0064] In one embodiment, the brush mounting structure includes a brush mounting hole for the brush 4 to pass through and a brush 4 locking screw provided on the side wall of the brush mounting hole. The transverse fixed support arm 51 is provided with a threaded hole corresponding to the brush locking screw 41. The brush locking screw 41 is threadedly connected to the threaded hole. The brush locking screw 41 is tightened inward and abuts against the brush 4 to lock the brush 4. The brush locking screw 41 is loosened outward to release the brush 4, so that the brush 4 can slide relative to the positioning bracket 1.

[0065] In one specific embodiment, there are two pen locking screws 41, which are respectively disposed on two opposite sides of the pen 4 to enhance the stability of the pen locking screws 41 in locking the pen 4 and ensure smooth line drawing.

[0066] In one embodiment, the axis of the pen 4 is arranged along the axis of the pen mounting hole.

[0067] In one embodiment, the marker 2 has a connecting end for connecting the pen fixing bracket 5, and the connecting end is located outside the positioning bracket 1; It also includes a bracket connector 7, and the end of the longitudinal fixed arm 52 away from the longitudinal fixed arm 52 is connected to the connecting end of the marker 2 through the bracket connector 7.

[0068] In one embodiment, a wear-resistant bushing is also included. Rotary mounting holes are respectively provided on the longitudinal fixed support arm 52 of the paintbrush fixing bracket 5 and the connecting end of the marker 2. The wear-resistant bushing is installed in the rotary mounting hole to ensure the flexibility and service life of the rotary connection. The bracket connector 7 includes a connecting pin, which is set inside a wear-resistant bushing and rotates to connect the longitudinal fixed arm 52 of the paintbrush fixing bracket 5 to the end of the marker 2.

[0069] In one specific embodiment, the connecting pin is a cylindrical pin, and the cylindrical pin is connected to a bent rod portion for hand operation.

[0070] In another embodiment, the bracket connector 7 is a locking bolt equipped with a nut. The locking bolt passes through the rotating mounting holes of the longitudinal fixing arm 52 of the paintbrush fixing bracket 5 and the connecting end of the marker 2, respectively, and is locked in place with the nut to detachably connect the longitudinal fixing arm 52 of the paintbrush fixing bracket 5 and the connecting end of the marker 2.

[0071] The method of using the flap overlap measurement scribing tool provided in this embodiment includes: Assembly tool: Insert the paintbrush 4 into the paintbrush mounting hole of the paintbrush fixing bracket 5, adjust the extension length of the paintbrush 4 (for example, 15mm), tighten the locking screws of the paintbrush 4 on both sides, and fix the paintbrush 4 in place. Positioning reference: The upper surface of the lateral positioning arm 11 of the positioning bracket 1 is aligned with the measurement reference surface of the lower surface of the wing to ensure that the positioning bracket 1 is not loose or offset; Adjusting the size: Assuming the design requirement for flap overlap is 25.50mm, loosen the scale rod locking piece 22, push the scale rod 2 to move axially along the sliding through hole 111 of the positioning bracket 1, observe the indicator tip 31 of the first scale 3, and combine the first scale 13 on the positioning bracket 1 and the second scale 21 on the scale rod 2 until the first scale 3 indicates a value of 25.50mm on the first scale 13 (the scale units of the first scale 13 and the second scale 21 can be set as needed, or the result can be measured and converted before use). Fixed marker 2: Tighten the marker locking part 22 to fix the marker 2 in the current position, and confirm again that the value indicated by the first ruler 3 is correct; Line drawing operation: Hold the positioning bracket 1 and keep it stable against the lower surface of the wing. Push the pen fixing bracket 5 to drive the pen 4 and draw a line on the corresponding position of the upper skin of the wing along the direction parallel to the edge of the wing (the line length can be 50mm). During this process, the positioning bracket 1 also slides accordingly and always maintains positioning and cooperation with the lower surface 81 of the wing and the leading edge 91 of the flap. Complete the operation: After the line is drawn, loosen the marker locking part 22, remove the tool, and check the line position to ensure that the line accuracy meets the requirements; Cutting operation: Cut off the excess skin on the wing along the line drawn by the pen on the upper surface of the wing skin to obtain the set value (25.50mm) of overlap.

[0072] The tool in this embodiment is used to measure and scribing the flap overlap. The operation is simple and can be completed by a single person. The scribing accuracy is improved (the accuracy can be controlled within ±0.2mm). Compared with the traditional manual method, the efficiency is greatly improved. It effectively solves the problems of low accuracy, low efficiency and cumbersome operation in the traditional method. It can be widely used in the assembly process of wings and flaps 9 of various aircraft.

[0073] The above description is merely a preferred embodiment of the present invention and does not limit the scope of patent protection of the present invention. Any equivalent structural transformations made based on the description and drawings of the present invention, whether directly or indirectly applied to other related technical fields, are similarly included within the scope of protection of the present invention.

Claims

1. A tool for measuring and scribing flap overlap, used to determine the overlap of flaps relative to the wing, characterized in that, Includes positioning bracket, marker, first ruler, paintbrush, and paintbrush fixing bracket; The positioning bracket includes a first positioning part and a second positioning part. The first positioning part is used to position and cooperate with the lower surface of the wing, and the second positioning part is used to position and cooperate with the leading edge of the flap. The positioning bracket is provided with a first scale. The marker is slidably mounted on the positioning bracket, and the sliding direction includes the length direction of the first scale. The first scale is fixedly mounted on one end of the marker. The first scale is used to cooperate with the indication of the first scale. The second positioning part, which is used to cooperate with the positioning of the leading edge of the flap, corresponds to the reference of the first scale. The paintbrush is mounted on the marker via the paintbrush mounting bracket, and the paintbrush is positioned above the first ruler. The paintbrush is used to draw lines on the upper surface of the wing skin, and the tip of the paintbrush corresponds to the indicator tip of the first ruler.

2. The flap overlap measurement scribing tool as described in claim 1, characterized in that, It also includes a pole locking component, which is disposed on the pole. When the pole slides to the desired position, the pole locking component is used to lock the pole to the positioning bracket.

3. The flap overlap measurement scribing tool as described in claim 1, characterized in that, The positioning bracket includes a lateral positioning arm and a longitudinal positioning arm connected to each other. The first positioning part is the upper surface of the lateral positioning arm, and the upper surface of the lateral positioning arm is adapted to the lower surface profile of the wing. The second positioning part is the inner surface of the longitudinal positioning arm near the transverse positioning arm, and the inner surface of the longitudinal positioning arm near the transverse positioning arm is adapted to the leading edge profile of the flap.

4. The flap overlap measurement scribing tool as described in claim 3, characterized in that, The first scale is set on the outer wall of the transverse positioning arm; The positioning bracket has a sliding through hole on its lateral positioning arm, and the sliding through hole has a side outlet that penetrates the side wall of the lateral positioning arm. The marker is slidably disposed within the sliding perforation, and the first scale extends out of the sliding perforation through the side outlet and is configured to cooperate with the indication of the first scale.

5. The flap overlap measurement scribing tool as described in claim 1, characterized in that, The reference of the first scale is the positioning surface of the second positioning part used for positioning and engaging with the leading edge of the flap; The accuracy of the first scale is not less than 0.1 mm.

6. The flap overlap measurement scribing tool as described in claim 1, characterized in that, The marker is provided with a second scale and also includes a second ruler. The second ruler is fixed on the positioning bracket and is used to cooperate with the indication of the second scale. The scale direction of the second scale is opposite to that of the first scale, and the reading of the second scale on the second scale corresponds to the reading of the first scale on the first scale.

7. The flap overlap measurement scribing tool as described in claim 1, characterized in that, The paintbrush holder is detachably connected to the marker.

8. The flap overlap measurement scribing tool as described in claim 1, characterized in that, The brush holder includes a horizontal fixing arm and a vertical fixing arm connected to each other. The horizontal fixing arm has a brush mounting structure at the end away from the vertical fixing arm for mounting the brush. The end of the vertical fixing arm away from the vertical fixing arm is connected to the marker.

9. A scriber for measuring flap overlap as described in claim 8, characterized in that, The marker has a connecting end for connecting to the paintbrush fixing bracket, and the connecting end is located outside the positioning bracket; It also includes a bracket connector, wherein the end of the longitudinal fixed arm away from the longitudinal fixed arm is connected to the connecting end of the marker pole through the bracket connector.

10. A scriber for measuring flap overlap as described in claim 9, characterized in that, It also includes a wear-resistant bushing. The longitudinal fixed support arm of the paintbrush fixing bracket and the connecting end of the marker are respectively provided with rotating mounting holes, and the wear-resistant bushing is installed in the rotating mounting holes. The bracket connector includes a connecting pin, which is disposed inside the wear-resistant bushing and rotatably connects the longitudinal fixed arm of the paintbrush fixing bracket to the connecting end of the marker.

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