An assembly precision calibration and control device and method for via manufacturing

Abstract

The application belongs to the technical field of aviation structure design, and particularly relates to an assembly precision calibration and control device and method for manufacturing a return hole. The device comprises: a nail hole positioning base body comprising a first positioning section and a second positioning section, both of which are cylindrical, the radial dimension of the first positioning section is smaller than that of the second positioning section, the first positioning section is installed in an original machine nail hole of an assembly base body, and the second positioning section is provided with a positioning calibration hole; a repair calibrator comprising a first calibration section and a second calibration section, both of which are cylindrical, the radial dimension of the first calibration section is larger than that of the second calibration section, and the first calibration section is installed in the positioning calibration hole; and a calibration bushing which is cylindrical and is provided with a through hole in the center, and the calibration bushing is sleeved on the second calibration section. The application can solve the mechanical measurement and repair use requirements under the implicit assembly condition of non-visible direct operation in the return hole manufacturing process of new parts such as aircraft rudder support, fuselage stringer and hatch assembly.

Description

Technical Field

[0001] This application belongs to the field of aerospace structural design technology, and specifically relates to an assembly accuracy calibration and control device and method for reverse hole manufacturing. Background Technology

[0002] Aircraft manufacturing and repair are high-tech industries with stringent assembly standards and requirements. Conventional manufacturing involves assembling individual parts from a scattered state using fasteners (such as bolts and rivets), which is relatively easy to implement. However, aircraft repair involves replacing specific damaged structural parts in already assembled structural components. Therefore, it is necessary to manufacture and install the new parts in situ, while ensuring assembly accuracy, using the existing connecting bolt holes. In particular, some replacement parts need to be completed under implicit assembly conditions without direct visual manipulation during the replacement hole manufacturing process. Currently, there is a lack of engineering-based precision manufacturing and control methods applicable to different hole diameters that can quantitatively reflect the relationship between part machining errors and system assembly errors.

[0003] The assembly accuracy calibration and control method for reverse hole manufacturing effectively solves the above contradictions and has significant engineering implications.

[0004] Therefore, it is desirable to have a technical solution to overcome or at least mitigate one of the aforementioned defects of the prior art. Summary of the Invention

[0005] The purpose of this application is to provide an assembly accuracy calibration and control device and method for reverse hole manufacturing, so as to solve at least one problem existing in the prior art.

[0006] The technical solution of this application is:

[0007] The first aspect of this application provides an assembly accuracy calibration and control device for reverse hole manufacturing, comprising:

[0008] The nail hole positioning base includes a first positioning section and a second positioning section, both of which are cylindrical. The radial dimension of the first positioning section is smaller than that of the second positioning section. The first positioning section is installed in the original nail hole of the assembly base, and the second positioning section has a positioning calibration hole.

[0009] A fitting calibrator, comprising a first calibration section and a second calibration section, both cylindrical in shape, wherein the radial dimension of the first calibration section is larger than the radial dimension of the second calibration section, and the first calibration section is installed in the positioning calibration hole;

[0010] The calibration bushing is cylindrical and has a through hole in its center. The calibration bushing is fitted onto the second calibration section.

[0011] In at least one embodiment of this application, the radial dimension of the first positioning segment is Φ4mm, Φ5mm or Φ6mm.

[0012] In at least one embodiment of this application, the end of the positioning calibration hole is provided with a chamfer.

[0013] In at least one embodiment of this application, the radial dimension of the second calibration segment is Φ2mm, Φ2.5mm or Φ3mm.

[0014] In at least one embodiment of this application, the outer diameter of the calibration bushing is Φ3.5mm, Φ4mm, Φ4.5mm or Φ5mm, and the inner diameter is Φ2mm, Φ2.5mm or Φ3mm.

[0015] The second aspect of this application provides a method for calibrating and controlling assembly accuracy in reverse hole manufacturing, based on the assembly accuracy calibration and control device for reverse hole manufacturing as described above, comprising:

[0016] On structural components that have already been assembled, replace specific damaged structural parts in situ.

[0017] Install the nail hole positioning base that is compatible with the original nail hole into the original nail hole of the assembly base, and install the repair calibrator into the positioning calibration hole of the nail hole positioning base;

[0018] The replacement parts are repositioned by applying red paint to the tip of the repair calibrator, and assembly guide holes are drilled on the structural components using a drill bit.

[0019] The calibration bushing is installed on the fitting calibrator to control and verify the accuracy of the return hole pin hole, and a reamer is used to ream and enlarge the assembly guide hole.

[0020] The calibration bushings with different outer diameters are selected step by step until the replacement parts are produced with the required precision for assembly.

[0021] The invention has at least the following beneficial technical effects:

[0022] The assembly accuracy calibration and control device for reverse hole manufacturing disclosed in this application can solve the mechanical measurement and repair needs of replacement parts such as aircraft control surface supports, fuselage stringers, and cover assemblies under implicit assembly conditions that are not directly manipulated by visual means during the reverse hole manufacturing process. Attached Figure Description

[0023] Figure 1 This is an overall schematic diagram of an assembly accuracy calibration and control device for reverse hole manufacturing according to one embodiment of this application;

[0024] Figure 2 This is an axial view of a nail hole positioning base according to one embodiment of this application;

[0025] Figure 3 This is a front view of a nail hole positioning base according to one embodiment of this application;

[0026] Figure 4 This is an axial view of a fitting calibrator according to one embodiment of this application;

[0027] Figure 5 This is a front view of a fitting calibrator according to one embodiment of this application;

[0028] Figure 6 This is an axial view of a calibration bushing according to one embodiment of this application;

[0029] Figure 7 This is a front view of a calibration bushing according to one embodiment of this application;

[0030] Figure 8 This is a schematic diagram of an embodiment of the present application for in-situ replacement of a specific damaged structural part;

[0031] Figure 9 This is a schematic diagram of the return hole positioning calibration and manufacturing use control according to one embodiment of this application;

[0032] Figure 10 This is a schematic diagram of a return hole manufacturing accuracy calibration and replacement part inspection and assembly according to one embodiment of this application.

[0033] in:

[0034] 1-Part; 2-Drill hole positioning base; 3-Mating calibrator; 4-Calibration bushing. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0036] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this application.

[0037] The following is in conjunction with the appendix Figures 1 to 10 This application will be described in further detail.

[0038] The first aspect of this application provides an assembly accuracy calibration and control device for reverse hole manufacturing, such as... Figure 1 As shown, it includes: nail hole positioning base 2, fitting calibrator 3, and calibration bushing 4.

[0039] Specifically, such as Figure 2-3 As shown, the nail hole positioning base includes a first positioning segment and a second positioning segment, both cylindrical in shape. The radial dimension of the first positioning segment is smaller than that of the second positioning segment. The first positioning segment is installed in the original nail hole of the assembly base. The second positioning segment has a positioning calibration hole. The first positioning segment is available in various specifications depending on its radial dimension. In one embodiment, the radial dimension of the first positioning segment is Φ4mm, Φ5mm, or Φ6mm, etc., depending on the nail hole type of the assembly base. In this embodiment, it is preferable that the end of the positioning calibration hole is chamfered.

[0040] like Figure 4-5 As shown, the fitting calibrator 3 includes a first calibration section and a second calibration section, both cylindrical in shape. The radial dimension of the first calibration section is larger than that of the second calibration section. The first calibration section is installed in the positioning calibration hole. Depending on the size of the assembly guide hole, the radial dimension of the second calibration section can be Φ2mm, Φ2.5mm, or Φ3mm, etc., and the corresponding length can be customized according to actual assembly requirements.

[0041] like Figure 6-7 As shown, the calibration bushing 4 is cylindrical with a through hole in the center, and is fitted onto the second calibration section. The outer diameter of the calibration bushing 4 is Φ3.5mm, Φ4mm, Φ4.5mm, or Φ5mm, etc., selected progressively according to the final hole size of the replacement part 1 during use. The inner diameter of the calibration bushing 4 is Φ2mm, Φ2.5mm, or Φ3mm, etc., and the corresponding calibration bushing 4 is selected according to the size of the second calibration section of the fitting calibrator 3 during use, and the length of the calibration bushing 4 is customized according to actual assembly requirements.

[0042] Based on the above-mentioned assembly accuracy calibration and control device for reverse hole manufacturing, the second aspect of this application provides a method for assembly accuracy calibration and control in reverse hole manufacturing, comprising:

[0043] On a structural component that has already been assembled, replace the specific damaged structural part 1 in situ, such as... Figure 8 As shown;

[0044] Install the nail hole positioning base 2, which is compatible with the original nail hole, into the original nail hole of the assembly base. Install the fitting calibrator 3 of appropriate length into the positioning calibration hole of the nail hole positioning base 2. Figure 9 As shown;

[0045] The replacement parts are positioned by applying red paint to the tip of the repair calibrator 3, and assembly guide holes are drilled on the structural components using a drill bit.

[0046] The calibration bushing 4 is installed on the fitting calibrator 3 to control and verify the accuracy of the return hole pin hole, and a reamer is used to ream and enlarge the assembly guide hole, such as... Figure 10 As shown;

[0047] The calibration bushings 4 with different outer diameters are selected step by step until the replacement parts are produced with the required assembly precision.

[0048] The assembly accuracy calibration and control method for reverse hole manufacturing in this application, based on the physical characteristics of the rigid carrier reflecting the key positioning of the structural assembly itself, selects high-rigidity materials to prepare the nail hole positioning base 2, the fitting calibrator 3, and the calibration bushing 4; through installation, the suitable nail hole positioning base 2 and fitting calibrator 3 are combined to perform initial positioning of the reverse hole of the replacement part 1, and the reverse hole nail hole is further controlled and verified by selecting calibration bushings 4 with different outer diameters, so as to finally achieve the required accuracy for the reverse hole nail hole manufacturing assembly of the replacement part.

[0049] The assembly accuracy calibration and control device and method for reverse hole manufacturing disclosed in this application can, under existing pin hole and implicit assembly conditions, utilize specific reverse hole manufacturing processes and equipment to achieve assembly accuracy calibration and control that reflects the quantitative relationship between part machining errors and system assembly errors. It can address the mechanical measurement and repair requirements of replacement parts such as control surface supports and cover assemblies under implicit assembly conditions where the reverse hole manufacturing process requires non-visual direct manipulation. This application will not damage or alter the assembly state of the aircraft body, and the equipment is simple, convenient, and reusable.

[0050] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A device for calibrating and controlling assembly accuracy in reverse hole manufacturing, characterized in that, include: The nail hole positioning base (2) includes a first positioning section and a second positioning section, both of which are cylindrical. The radial dimension of the first positioning section is smaller than that of the second positioning section. The first positioning section is installed in the original nail hole of the assembly base. The second positioning section has a positioning calibration hole. The fitting calibrator (3) includes a first calibration section and a second calibration section, both of which are cylindrical. The radial dimension of the first calibration section is larger than that of the second calibration section. The first calibration section is installed in the positioning calibration hole. The calibration bushing (4) is cylindrical, and a through hole is provided in the center of the calibration bushing (4). The calibration bushing (4) is fitted onto the second calibration section. Assembly accuracy calibration and control methods for reverse hole manufacturing include: On the structural components that have been assembled, replace the damaged structural parts in situ (1). Install the nail hole positioning base (2) that is compatible with the original nail hole into the original nail hole of the assembly base, and install the fitting calibrator (3) into the positioning calibration hole of the nail hole positioning base (2); The replacement parts are positioned by applying red paint to the tip of the repair calibrator (3), and assembly guide holes are drilled on the structural components using a drill bit. The calibration bushing (4) is installed on the fitting calibrator (3) to control and verify the accuracy of the return hole pin hole, and the assembly guide hole is reamed and enlarged using a reamer. Select calibration bushings (4) with different outer diameters step by step until the replacement parts are produced to the required assembly accuracy.

2. The assembly accuracy calibration and control device for reverse hole manufacturing according to claim 1, characterized in that, The radial dimension of the first positioning segment is Φ4mm, Φ5mm or Φ6mm.

3. The assembly accuracy calibration and control device for reverse hole manufacturing according to claim 2, characterized in that, The end of the positioning calibration hole is chamfered.

4. The assembly accuracy calibration and control device for reverse hole manufacturing according to claim 3, characterized in that, The radial dimension of the second calibration section is Φ2mm, Φ2.5mm or Φ3mm.

5. The assembly accuracy calibration and control device for reverse hole manufacturing according to claim 4, characterized in that, The outer diameter of the calibration bushing (4) is Φ3.5mm, Φ4mm, Φ4.5mm or Φ5mm, and the inner diameter is Φ2mm, Φ2.5mm or Φ3mm.

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