Hole site line drawing tool and line drawing method for cross lap joint area of aircraft floor beam

Abstract

The invention discloses a hole site line drawing tool for a cross lap joint area of an airplane floor beam. The hole site line drawing tool comprises a clamping base, a line drawing caliper and a limiting caliper. Wherein the clamping seat comprises a first mounting hole and a second mounting hole, and the first mounting hole and the second mounting hole are distributed in a staggered manner; the clamping seat comprises a first reference surface and a second reference surface which are respectively used for positioning line drawing positions; the line drawing caliper is mounted in the first mounting hole, one end of the line drawing caliper is provided with a line drawing part, the line drawing part is provided with a line drawing guide hole, and the distance between the center of the line drawing guide hole and the first reference surface is adjusted through the position of the line drawing caliper in the first mounting hole; the limiting caliper is installed in the second installation hole, one end of the limiting caliper is provided with a limiting part used for abutting against the edge of the floor beam, and the distance between the limiting part and the second datum plane is adjusted through the position of the limiting caliper in the second installation hole. Through the installation relation of the line drawing caliper and the limiting caliper on the clamping base, the height of the line drawing caliper is matched with the working condition of a floor beam cross lap joint area, and the connecting hole position can be rapidly and conveniently positioned and drawn.

Description

Technical Field

[0001] The present invention relates to the technical field of aircraft manufacturing, in particular to a hole position marking tool and a marking method for a cross-lapping area of an aircraft floor beam. Background Art

[0002] During the assembly process of large aircraft (such as passenger aircraft and cargo aircraft), the service cabin floor components usually adopt a structural form of cross-lap joints between vertical beams and horizontal beams. Such overlap areas require precise processing of connector mounting holes on the horizontal beams. For example, the horizontal beams and vertical beams overlap to form several overlap points. Each overlap point is connected by screws or rivets through two marked holes, and certain precision requirements are met during assembly.

[0003] In the prior art, the hole positions required for connecting the overlapped areas of the horizontal beam and the vertical beam are generally positioned and processed by the following step-by-step marking method, that is, first draw the outer contour line of the vertical beam on the horizontal beam, then remove the vertical beam, mark the hole position line of the connector based on the vertical beam contour line, and finally form the drill hole. This method has the following shortcomings in actual operation: First, due to the large length and weight of the vertical beam, it requires the cooperation of multiple people to move it, which is labor-intensive, resulting in the overall process of hole position drawing being cumbersome and time-consuming, and prone to marking errors or large errors, resulting in quality problems such as large hole position deviation and margin deviation; second, when the horizontal beam and the vertical beam are fixed on the machine body and cannot be moved, it is too difficult to draw the hole position line of the connector using the existing technology, or even impossible to achieve. Therefore, for the current hole position determination and marking of the cross-lap area of aircraft floor beams, it is necessary to design a tool to improve the traditional marking method and improve the marking efficiency. Summary of the Invention

[0004] The main purpose of the present invention is to provide a hole position marking tool and marking method for the cross-lap area of aircraft floor beams, so as to solve the problem of cumbersome and inconvenient operation of the connection hole position positioning process of the cross-lap area of aircraft floor beams in the prior art.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a hole marking tool for the cross-lap area of an aircraft floor beam, characterized in that it comprises: The card base is provided with a first mounting hole and a second mounting hole, wherein the first mounting hole and the second mounting hole are staggered; the card base includes a first reference surface and a second reference surface, wherein the first reference surface and the second reference surface are respectively a side surface of the card base and are used to locate a drawing position; the first reference surface is perpendicular to the second mounting hole, and the second reference surface is perpendicular to the first mounting hole; a marking caliper, mounted in the first mounting hole, having a marking portion at one end, the marking portion being provided with a marking guide hole, the distance between the center of the marking guide hole and the first reference plane being adjusted by the position of the marking caliper in the first mounting hole; A limit caliper is installed in the second mounting hole, and a limit portion is configured at one end. The limit portion is used to abut against the edge of the floor beam, and the distance between the limit portion and the second reference plane is adjusted by the position of the limit caliper in the second mounting hole.

[0006] For example, in the hole position marking tool provided in at least one embodiment of the present application, the holder includes a first mounting layer and a second mounting layer, the first mounting hole is configured on the first mounting layer, and the second mounting hole is configured on the second mounting layer, and the first mounting layer and the second mounting layer can rotate relative to each other.

[0007] For example, in the hole marking tool provided in at least one embodiment of the present application, a first fixing screw hole is configured on the first mounting layer, and a second fixing screw hole is configured on the second mounting layer. The first fixing screw hole fixes the marking caliper through a screw, and the second fixing screw hole fixes the limit caliper through a screw.

[0008] For example, in the hole marking tool provided in at least one embodiment of the present application, the side of the marking caliper close to the marking part and the side of the limit caliper close to the limit part are both provided with scale lines.

[0009] For example, in the hole marking tool provided in at least one embodiment of the present application, the marking portion, the marking caliper, and the limit caliper all have an L-shaped structure.

[0010] For example, in the hole marking tool provided in at least one embodiment of the present application, the number of the marking guide holes is set at two on the marking portion, and the guide holes are symmetrically distributed on both sides of the axis of the marking caliper.

[0011] For example, in the hole marking tool provided in at least one embodiment of the present application, a magnetic element is disposed on the first reference surface of the holder for fixing the holder on the side or edge of the floor beam.

[0012] For example, the limiting portion in the hole marking tool provided in at least one embodiment of the present application is configured with knurled anti-slip patterns.

[0013] On the other hand, the present application further provides a method for marking hole positions in a cross-joint area of an aircraft floor beam, which is implemented using the hole position marking tool as described in any of the preceding items, comprising: Installing the marking caliper and the limit caliper in the first mounting hole and the second mounting hole respectively; Adjust the marking caliper and the limit caliper so that the distance between the marking guide hole and the first reference plane is equal to the distance between the hole position and the floor beam margin in the first direction, and the distance between the marking guide hole and the second reference plane is equal to the distance between the hole position and the floor beam margin in the second direction; Fitting the second reference surface of the holder to the edge of the floor beam in the first direction, and clamping the limiting portion on the edge of the floor beam in the second direction; The hole positions are drawn using the line drawing guide.

[0014] Compared with the prior art, the hole position marking tool and marking method of the present application have at least the following beneficial effects: through the assembly relationship of the clamping base, the marking caliper, and the limit caliper, it can adapt to the special structure of the floor beam overlap area in a cross or cross shape, so that the hole position marking tool can strictly fit this part of the structure, facilitating the marking operation; at the same time, the first reference plane and the second reference plane on the clamping base are used as reference systems to adjust the relative positions of the limit caliper and the marking caliper on the clamping base, so as to accurately locate the position of the marking guide hole on the marking caliper. After the clamping base is used to fit the floor beam overlap area and fixed, the hole position can be marked using the position of the marking caliper (that is, the drawing guide hole) on the vertical beam. This process does not require moving the vertical beam or the horizontal beam, and can be used even when the floor beam has been fixed to the body. It is easy to operate and has higher marking efficiency than the existing floor beam overlap area marking method. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the assembled skeleton structure for the aircraft cabin floor; Figure 2 A schematic structural diagram of an embodiment of a hole position drawing tool; Figure 3 This is a schematic diagram of the disassembly of the structure of an embodiment of a hole marking tool; Figure 4 This is a working state diagram of an embodiment of a hole position drawing tool applied in an overlap area; Explanation of the serial numbers: 100, hole marking tool; 10, holder; 11, first mounting hole; 12, second mounting hole; 10-a, first reference plane; 10-b, second reference plane; 13, first mounting layer; 14, second mounting layer; 15, first fixing screw hole; 16, second fixing screw hole; 20, marking caliper; 21, marking part; 22, marking guide hole; 30, limit caliper; 31, limit part; 40, screw; 200, horizontal beam; 300, vertical beam.

[0016] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0018] The terms "first," "second," and "third" in this application are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features identified. Therefore, features identified as "first," "second," or "third" may explicitly or implicitly include at least one of such features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined. All directional designations in the embodiments of this application (such as up, down, left, right, front, back, etc.) are intended only to illustrate the relative positional relationships and movement of components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional designations will also change accordingly. Furthermore, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to such process, method, product, or apparatus.

[0019] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0020] The floor structure in passenger (cargo) cabin is usually made of Figure 1 The horizontal beams and vertical beams shown are cross-jointed or cross-lapped to form a skeleton and then laid. During the assembly process, the overlapping areas of the horizontal beams and vertical beams are generally connected by screws or pins. Therefore, holes need to be drilled at specific locations before or after the overlap to form connection holes. In addition, the positioning of the connection holes also requires a certain degree of accuracy (usually at the millimeter level). Figure 1, the existing crossbeams are generally made of I-beams, and the vertical beams are made of structural steel with a "C"-shaped cross-section. The positioning of the connection holes is roughly carried out in the following way: the outer contour line of the vertical beam on the crossbeam is calibrated by the overlapping state, and then the vertical beam is removed. The connection hole position is determined on the crossbeam based on the vertical beam contour line and the margin value and other parameter requirements (in aircraft assembly, there are strict standards for the connection points of crossbeams and vertical beams. Specifically, the connection hole position must be determined on the crossbeam first, and then the corresponding position must be determined on the vertical beam); it can be seen that this line drawing process is relatively cumbersome, and the crossbeams or vertical beams of the aircraft structure are heavy, requiring the collaborative work of multiple people. The method of moving the vertical beams or crossbeams may also cause line drawing errors, resulting in large hole position deviations, margin deviations and other quality problems; if the crossbeams and vertical beams are overlapped and fixed on the fuselage before the hole position is marked, the above method may not even be applicable.

[0021] Therefore, one embodiment of the present application provides a hole marking tool for the cross-joint area of aircraft floor beams to solve the problems of inconvenient operation, errors and other low efficiency in the above-mentioned marking process.

[0022] Combine Figure 2-Figure 4 As shown, the hole marking tool 100 for the cross-lap area of an aircraft floor comprises: a holder 10, a marking caliper 20, and a limit caliper 30; wherein the holder 10 comprises a first mounting hole 11 and a second mounting hole 12, and the first mounting hole 11 and the second mounting hole 12 are staggered. The staggered arrangement means that the first mounting hole 11 and the second mounting hole 12 are arranged in different directions in two non-intersecting planes, for example Figure 2 The layers are in a vertical relationship, thereby enabling the installation of calipers in different directions on the common carrier of the card seat 10, and adapting to the overlapping structure of the horizontal beam 200 and the vertical beam 300; In particular, the card base 10 includes a first reference surface 10-a and a second reference surface 10-b, which are respectively a side surface of the card base and are used to locate the drawing position; the first reference surface 10-a is perpendicular to the second mounting hole 12, and the second reference surface 10-b is perpendicular to the first mounting hole 11; Figure 2 In the embodiment, the first reference plane 10-a refers to the top surface of the upper end of the card holder 10, and the second reference plane 10-b refers to the two side surfaces (either left or right) of the card holder 10. The first reference plane 10-a can cooperate with the limit caliper 30 to determine the longitudinal position of the drawing guide hole 22, and the second reference plane 10-b (left or right) can determine the lateral position of the drawing guide hole 22 by abutting against the vertical beam 300. The first reference plane 10-a and the second reference plane 10-b form a reference plane in two dimensions. The position of the drawing guide hole 22 in two directions is measured and calculated with the installation position of the card holder 10 (as the origin) to form coordinates, thereby improving the positioning accuracy of the connection hole. Additionally, as described above, the holder 10 is initially fixed against the edge of the vertical beam 300 by the second reference surface 10-b, and needs to be manually fixed during use, which affects the convenience of line drawing. In order to improve the fixing effect and facilitate single-person operation, a magnetic attraction part can be configured on the first reference surface 10-a of the holder 10 so that the holder 10 can be fixed on the side or edge of the vertical beam 300 without the help of manpower.

[0023] The marking caliper 20 is installed in the first mounting hole 11, and a marking portion 21 is provided at one end. The marking portion 21 is provided with a marking guide hole 22. The distance between the center of the marking guide hole 22 and the first reference surface 10-a is adjusted by the position of the marking caliper 20 in the first mounting hole 11; Figure 3 In the illustrated embodiment, the marking caliper 20 has an L-shaped structure. A marking portion 21 is positioned vertically at one end of the caliper 20, positioned adjacent to or aligned with the inner wall of the vertical beam 300 (C-beam), facilitating marking operations. Two upper and lower marking guide holes 22 are symmetrically positioned along the axis of the caliper 20. It will be appreciated that the number of marking guide holes 22 can be adjusted as needed, with a minimum of one. The distance between the marking portion 21 (marking guide hole 22) and the second reference surface 10-b can be adjusted by adjusting its fixed position within the first mounting hole 11, thereby enhancing the accuracy of the connection hole positioning in the horizontal direction.

[0024] Furthermore, in some embodiments, the marking caliper 20 is further provided with a scale line on the side close to the marking portion 21 with an accuracy of millimeters for accurately adjusting the distance between the marking portion 21 (marking guide hole 22) and the second reference surface 10-b.

[0025] The limit caliper 30 is installed in the second mounting hole 12, and a limit portion 31 is configured at one end. The limit portion 31 is used to abut against the edge of the floor beam. The distance between the limit portion 31 and the second reference surface 10-b is adjusted by the position of the limit caliper 30 in the second mounting hole 12. Figure 3 In the embodiment shown, the limit caliper 30 has an L-shaped structure, and the limit portion 31 is vertically configured at one end of the limit caliper 30, forming a right angle and abutting against the edge of the beam 200; similarly, the limit portion 31 can adjust the distance between the limit portion 31 and the first reference surface 10-a by adjusting the fixed position in the second mounting hole 12, so as to improve the accuracy of the connection hole positioning in the longitudinal direction.

[0026] Similarly, in some embodiments, the limit caliper 30 is further provided with a scale line on the side close to the limit portion 31 with an accuracy of millimeters, so as to accurately adjust the distance between the limit portion 31 and the second reference surface 10-b.

[0027] In particular, the side of the limiting portion 31 in contact with the beam 200 is provided with a knurled anti-slip pattern (not shown), which increases the friction coefficient to prevent the limiting portion 31 from falling off the beam 200, thereby improving the user's convenience experience.

[0028] It should be noted that in the above-mentioned embodiment, the limiting part 31 and the drawing part 21 achieve improved positioning accuracy by adjusting the position. More preferably, the center of the drawing guide hole 22 can be precisely aligned during processing. For example, based on the embodiment in which both the drawing caliper 20 and the limiting caliper 30 are provided with scale lines, the center of the drawing guide hole 22 is aligned with the "0" scale on the drawing caliper 20 and the second reference surface 10-b of the holder 10 respectively; under this condition, the scale value of the drawing caliper 20 exposed to the holder 10 represents the distance from the center of the hole to the second reference surface 10-b (horizontal coordinate), and the scale value of the limiting caliper 30 exposed to the holder 10 represents the distance from the limiting part 31 to the first reference surface 10-a (vertical coordinate). This setting can further improve the positioning accuracy of the connecting hole. When positioning the connecting hole according to the established specifications, the hole position drawing tool 100 of the present application can be used to accurately position the hole to millimeters, significantly reducing the error rate of the existing drawing method.

[0029] The marking tool of the above embodiment is adapted to the special structure of the floor beam overlap area in a cross or cross shape (see Figure 4 ), by fixing the holder 10 in the overlap area (such as fitting on the edge of the vertical beam 300, and the abutment relationship between the limit part 31 and the horizontal beam 200), the connection hole position can be directly determined on the vertical beam 300 according to the assembly standard, without the need to use the contour line of the vertical beam 300 to first determine the position of the connection hole position on the horizontal beam 200 and the tedious step of moving the vertical beam 300. A single person can complete the positioning of the connection hole position, which not only reduces labor costs but also shortens the operation time; in addition, with the help of the reference system formed by the first reference plane 10-a and the second reference plane 10-b, the positioning accuracy of the connection hole position can be further improved, and the hole position coordinates can be accurately determined in the overlap area with the longitudinal position and the transverse position.

[0030] In the cabin floor structure, most of the overlapping areas of the cross beams 200 and the vertical beams 300 are as follows: Figure 1 However, at certain locations, such as the edge of the cabin, there is a certain non-right-angle overlap area. For this overlap area, at least one embodiment of the present application, based on the aforementioned hole position marking tool 100, divides the holder 10 into a first mounting layer 13 and a second mounting layer 14, wherein the first mounting hole 11 is arranged on the first mounting layer 13 and the second mounting hole 12 is arranged on the second mounting layer 14, and the first mounting layer 13 and the second mounting layer 14 can rotate relative to each other.

[0031] like Figure 3As shown, the card holder 10 includes two stacked mounting layers, a first mounting layer 13 on the upper side and a second mounting layer 14 on the lower side (with Figure 3 The first mounting layer 13 and the second mounting layer 14 are connected by a rotating structure. For example, turntable bearings are arranged on opposite sides of the two mounting layers. By twisting the first mounting layer 13 or the second mounting layer 14, the angle is changed to adapt to the overlap area of a specific angle, which facilitates the positioning operation of the connection hole. It is possible that a universal joint structure can be used to connect the first mounting layer 13 and the second mounting layer 14. The first mounting layer 13 and the second mounting layer 14 connected by the universal joint structure have a dual-degree-of-freedom adjustment function, including plane angle and pitch angle adjustment. In the overlap scenario of special-shaped structural beams such as C-beams, they can better fit the side wall of the beam, making the hole marking process convenient and accurate.

[0032] Furthermore, in the above embodiment, a first fixing screw hole 15 can be configured on the first mounting layer 13, and a second fixing screw hole 16 can be configured on the second mounting layer 14. The first fixing screw hole 15 and the second fixing screw hole 16 respectively fix the marking caliper 20 and the limit caliper 30 through screws 40.

[0033] The combination of screws and fixing screw holes is one of the low-cost ways to fix the caliper. The installation process is convenient and the fixing effect is good. After the reference system coordinates of the connection hole are determined according to the data standard (referring to the coordinates in the reference system established by the drawing tool), it can be accurately locked and used reliably during the drawing process.

[0034] The present application also provides an embodiment of a method for marking hole positions in a cross-joint area of an aircraft floor beam. The method is implemented based on the hole position marking tool 100 described in any of the previous embodiments, and includes: 1. Install the marking caliper 20 and the limit caliper 30 in the first mounting hole 11 and the second mounting hole 12 respectively; 2. Adjust the marking caliper 20 and the limit caliper 30 so that the distance between the marking guide hole 22 and the first reference plane 10 - a is equal to the distance between the hole and the floor beam edge in the first direction, and the distance between the marking guide hole 22 and the second reference plane 10 - b is equal to the distance between the hole and the floor beam edge in the second direction; 3. Align the second reference surface 10 - b of the holder 10 with the edge of the floor beam in the first direction, and lock the limiting portion 31 on the edge of the floor beam in the second direction; 4. Use the line guide 22 to draw the hole position.

[0035] The above detailed description of the specific embodiments of the invention is intended to be illustrative only, and the present invention is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications or substitutions to the invention are also within the scope of the present invention. Therefore, equivalent changes, modifications, and improvements made without departing from the spirit and scope of the present invention are also encompassed within the scope of the present invention.

Claims

1. A hole marking tool for the cross-joint area of aircraft floor beams, characterized in that: include: The card base is provided with a first mounting hole and a second mounting hole, wherein the first mounting hole and the second mounting hole are staggered; the card base includes a first reference surface and a second reference surface, wherein the first reference surface and the second reference surface are respectively a side surface of the card base and are used to locate a drawing position; the first reference surface is perpendicular to the second mounting hole, and the second reference surface is perpendicular to the first mounting hole; a marking caliper, mounted in the first mounting hole, having a marking portion at one end, the marking portion being provided with a marking guide hole, the distance between the center of the marking guide hole and the first reference plane being adjusted by the position of the marking caliper in the first mounting hole; A limit caliper is installed in the second mounting hole, and a limit portion is configured at one end. The limit portion is used to abut against the edge of the floor beam, and the distance between the limit portion and the second reference plane is adjusted by the position of the limit caliper in the second mounting hole.

2. The hole marking tool for the cross-joint area of aircraft floor beams according to claim 1, characterized in that: The card holder includes a first mounting layer and a second mounting layer. The first mounting hole is configured on the first mounting layer, and the second mounting hole is configured on the second mounting layer. The first mounting layer and the second mounting layer are relatively rotatable.

3. The hole marking tool for the cross-joint area of aircraft floor beams according to claim 2, characterized in that: The first mounting layer is provided with a first fixing screw hole, and the second mounting layer is provided with a second fixing screw hole. The first fixing screw hole is used to fix the marking caliper through a screw, and the second fixing screw hole is used to fix the limit caliper through a screw.

4. The hole marking tool for the cross-joint area of aircraft floor beams according to claim 1, characterized in that: The side of the line drawing caliper close to the line drawing part and the side of the position limiting caliper close to the position limiting part are both provided with scale lines.

5. The hole marking tool for the cross-joint area of aircraft floor beams according to claim 1, characterized in that: The line drawing portion, the line drawing caliper and the limit caliper all have an L-shaped structure.

6. The hole marking tool for the cross-joint area of aircraft floor beams according to claim 1, characterized in that: The number of the line drawing guide holes is set at two on the line drawing portion and is symmetrically distributed on both sides of the axis of the line drawing caliper.

7. The hole marking tool for the cross-joint area of aircraft floor beams according to claim 1, characterized in that: A magnetic element is disposed on the first reference surface of the holder, and is used to fix the holder on the side or edge of the floor beam.

8. The hole marking tool for the cross-joint area of aircraft floor beams according to claim 1, characterized in that: The limiting portion is provided with knurled anti-slip patterns.

9. A method for marking hole positions in a cross-joint area of an aircraft floor beam, characterized in that: The method is implemented using the hole position marking tool according to any one of claims 1 to 8, comprising: Installing the marking caliper and the limit caliper in the first mounting hole and the second mounting hole respectively; Adjust the marking caliper and the limit caliper so that the distance between the marking guide hole and the first reference plane is equal to the distance between the hole position and the floor beam margin in the first direction, and the distance between the marking guide hole and the second reference plane is equal to the distance between the hole position and the floor beam margin in the second direction; Fitting the second reference surface of the holder to the edge of the floor beam in the first direction, and clamping the limiting portion on the edge of the floor beam in the second direction; The hole positions are drawn using the line drawing guide.

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