Quick and convenient positioning transfer hole making method

Abstract

The invention belongs to the technical field of aeronautical manufacturing, and provides a quick and convenient positioning transfer hole making method which comprises the following steps: analyzing the positioning reference of a metal piece on a traditional fixture and the positioning reference of the metal piece and a composite material cover body; designing a metal false part according to the positioning reference, and processing and manufacturing; assembling the metal false piece and the composite material cover body together, and forming a hole; designing a drilling jig according to the metal false part, and processing and manufacturing; a hole drilling drill jig is used for drilling the metal piece needing to be replaced; and the metal piece with the hole is installed on the composite material cover body. The invention solves the technical problems of low positioning and mounting efficiency, long time consumption, poor adaptability and large occupied space due to the need of a traditional assembly fixture for replacing and mounting the metal part of the composite material cover body of the airplane, and realizes the positioning and drilling of the metal part without the traditional assembly fixture.

Description

Technical Field

[0001] The present invention belongs to the field of aviation manufacturing technology, and specifically relates to a positioning and transition method for making holes in composite materials and metal parts during aircraft assembly. The method can enable operators to quickly and conveniently make holes and install metal parts without using traditional tooling. Background Art

[0002] In existing technology, the composite aircraft cover and metal parts are positioned separately on assembly jigs, secured with corresponding external clamps and metal part positioning mechanisms, and then drilled using jigs to achieve the required installation, positioning, and hole-making. As the aircraft continues to operate, replacement of metal parts requires returning to the original factory and reinstalling them in the assembly jigs. This method is inefficient and unsuitable for replacing individual metal parts.

[0003] A method for convenient positioning and hole-making installation of metal parts without the need for traditional assembly jigs is now available. The method can ensure the interface position accuracy of replaced metal parts and realize rapid transfer and hole-making installation. Summary of the Invention

[0004] The present invention addresses the problem that traditional assembly jigs are required for replacement and installation of metal parts of aircraft composite cover bodies, which has low positioning and installation efficiency, long time consumption, poor adaptability, and large space occupation. The invention provides a fast and convenient positioning, transfer and hole-making method with simple design and easy operation.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A fast and convenient positioning transfer hole making method, which includes the following steps: Analyze the positioning datum of metal parts on traditional jigs, and the positioning datum of metal parts and composite material covers; Design and manufacture metal dummy parts according to the above positioning benchmarks; Assemble the metal dummy and the composite cover together and make holes; Design and manufacture hole drilling jigs based on metal fake parts; Use a drilling jig to drill holes in the metal parts that need to be replaced; The metal piece with the holes made therein is installed on the composite material cover.

[0006] As a further solution of the present invention: the positioning reference of the metal part on the traditional jig includes: Positioning reference A: positioning hole of metal parts; Positioning reference B: metal part positioning surface; Positioning reference C: metal part positioning groove.

[0007] As a further solution of the present invention: the positioning reference of the metal part and the composite material cover includes: Positioning reference A: positioning hole of metal parts; Positioning reference B: metal part positioning surface; Positioning reference C: Metal bolt mounting hole.

[0008] As a further solution of the present invention: the metal dummy is designed and manufactured according to the above-mentioned positioning reference, specifically: according to the structural form of the metal part, the surface of the positioning reference A, B, and C is retained to design the metal dummy; the metal dummy does not need to be consistent with the shape of the metal part, and only the positioning reference features on the assembly tool are retained.

[0009] As a further solution of the present invention: when designing the metal dummy, the accuracy of the positioning features and the matching accuracy of the groove and shaft must be considered; the design positioning datum A tolerance requirement is h9; the datum B tolerance requirement is ±0.05; the datum C positioning groove tolerance requirement is H7; the metal dummy is manufactured according to the above tolerance requirements and forms.

[0010] As a further solution of the present invention: the metal dummy is assembled with the composite material cover body and holes are made, specifically: the manufactured metal dummy is positioned and installed together with the composite material cover body on the assembly tool, and a drilling jig is used to make holes to make the hole positions of the metal dummy.

[0011] As a further solution of the present invention: the hole drilling jig is designed and manufactured according to the metal dummy, specifically: based on the positioning reference of the metal dummy, the hole drilling jig is designed, including a positioning mechanism, a clamping device, a detachable drill sleeve, a drilling jig base, bolt mounting holes, positioning holes and positioning mechanism mounting bolts.

[0012] As a further solution of the present invention: the tolerance requirement for the bolt installation hole position of the metal part in the hole drilling jig is H9, the tolerance requirement for the positioning surface is ±0.05; and the tolerance requirement for the positioning hole is f7.

[0013] As a further solution of the present invention: the use of a hole-making drill jig to make holes in the metal parts to be replaced is specifically: using the hole-making drill jig to position the metal parts to be replaced, and then making holes through a drill sleeve.

[0014] As a further solution of the present invention, the metal piece with holes formed therein is installed on the composite material cover, specifically, the metal piece with holes formed therein is aligned with the hole positions on the composite material cover, and connected with bolts to complete the installation.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. This application realizes the positioning and hole making of metal parts without the need for traditional assembly jigs; ensures the position accuracy of the metal part interfaces; the method is simple in design and easy to operate.

[0016] 2. This application ensures the interface position accuracy of metal parts and enables quick and convenient replacement and installation of metal parts.

[0017] 3. This application has been successfully applied to the installation work under a metal frame of XXX radome, with high positioning accuracy, easy operation and strong applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic flow chart of a fast and convenient positioning, transfer and hole-making method of the present invention; Figure 2 This is a schematic diagram of the ABC positioning reference of the metal part on the assembly tool of the present invention; Figure 3 This is a schematic diagram of the ABC positioning reference of the metal part on the composite material cover of the present invention; Figure 4 This is a schematic diagram of a hole-making drilling template of the present invention.

[0019] The accompanying drawings are marked as follows: 1. Drilling jig base; 2. Clamping mechanism; 3. Bolt mounting hole; 4. Positioning hole; 5. Positioning mechanism mounting bolt; 6. Positioning mechanism. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clear, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] In the drawings, the same or similar reference numerals throughout the drawings represent the same or similar elements or elements having the same or similar functions. The described embodiments are only some of the embodiments of the present invention, but not all of the embodiments.

[0022] The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0023] The following is combined with Figure 1-4 The embodiments of the present invention are described in detail.

[0024] Example 1 The present invention discloses a fast and convenient positioning transfer hole making method, which comprises the following steps: The positioning references of the metal parts on the traditional jig and the positioning references of the metal parts and the composite material cover are analyzed. In this embodiment, when the metal parts are replaced, the holes on the composite material cover are used as the positioning references.

[0025] Design and manufacture metal dummy parts according to the above positioning benchmarks; Assemble the metal dummy and the composite cover together and make holes; Design and manufacture hole-making jigs based on metal dummy parts; manufacture hole-making jigs for metal parts, and drill holes back to the hole positions on the metal dummy parts; Use a drilling jig to drill holes in the metal parts that need to be replaced; The metal piece with the holes made therein is installed on the composite material cover.

[0026] Preferably, the positioning reference of the metal part on the traditional jig includes: Positioning reference A: positioning hole of metal parts; Positioning reference B: metal part positioning surface; Positioning reference C: metal part positioning groove.

[0027] Preferably, the positioning references of the metal part and the composite material cover include: Positioning reference A: positioning hole of metal parts; Positioning reference B: metal part positioning surface; Positioning reference C: Metal bolt mounting hole.

[0028] Preferably, the metal dummy is designed and manufactured according to the above-mentioned positioning reference, specifically: according to the structural form of the metal part, the surface of the positioning reference A, B, and C is retained to design the metal dummy; the metal dummy does not need to be consistent with the shape of the metal part, and only the positioning reference features on the assembly tooling need to be retained.

[0029] Preferably, when designing the metal dummy, the accuracy of the positioning features and the matching accuracy of the groove and shaft should be considered; the tolerance requirement of the design positioning datum A is h9; the tolerance requirement of datum B is ±0.05; the tolerance requirement of the datum C positioning groove is H7; and the metal dummy is manufactured according to the above tolerance requirements and forms.

[0030] Preferably, the assembling of the metal dummy and the composite cover body and making holes is specifically as follows: positioning and mounting the manufactured metal dummy and the composite cover body together on an assembly tool, making holes using a drilling jig, and making holes for the metal dummy.

[0031] Preferably, the hole drilling jig is designed and manufactured according to the metal dummy, specifically: based on the metal dummy positioning reference, the hole drilling jig is designed, including a positioning mechanism, a clamping device, a detachable drill sleeve, a drilling jig base, bolt mounting holes, positioning holes and positioning mechanism mounting bolts.

[0032] Preferably, the tolerance requirement for the bolt installation hole position of the metal part in the hole drilling jig is H9, the tolerance requirement for the positioning surface is ±0.05; and the tolerance requirement for the positioning hole is f7.

[0033] Preferably, the use of a hole-making drill jig to make holes in the metal part to be replaced is specifically as follows: using the hole-making drill jig to position the metal part to be replaced, and then making holes through a drill sleeve.

[0034] Preferably, the step of installing the metal piece with holes on the composite material cover comprises aligning the metal piece with holes with the holes on the composite material cover, and connecting them with bolts to complete the installation.

[0035] Example 2 The present invention discloses a fast and convenient positioning transfer hole making method, which comprises the following steps: Step 1: Analyze the positioning reference of metal parts on traditional jigs, and the positioning reference of metal parts and composite cover. Take the metal parts in the figure below as an example, Figure 1 These are the positioning datums for metal parts on assembly tooling, namely positioning datum A: metal part positioning hole; positioning datum B: metal part positioning surface; positioning datum C: metal part positioning groove. Figure 2 The positioning datums for the metal parts and the composite material cover are positioning datum A: metal part positioning hole; positioning datum B: metal part positioning surface; positioning datum C: metal part bolt mounting hole.

[0036] Step 2: Design the metal parts according to Figure 1 The metal parts structure retains the profile of the positioning datum ABC. To minimize the impact of manufacturing tolerances, the positioning datum A is designed to have a tolerance of h9, the datum B tolerance is ±0.05, and the datum C positioning groove tolerance is H7.

[0037] Step 3: manufacture the metal part dummy according to the tolerance requirements and form of step 2.

[0038] Step 4: Position and install the manufactured metal dummy together with the composite cover on the assembly tool, use the drill jig on the assembly tool to make holes, and make the hole positions of the metal dummy to eliminate the possibility of hole position deviation.

[0039] Step 5: Design a metal hole drilling jig to Figure 1 Based on the positioning reference, the positioning mechanism, clamping device and detachable drill sleeve are set, such as Figure 4 shown. Figure 4 The drilling jig consists of the following components: 1. The jig base; 2. The clamping mechanism; 3. Bolt mounting holes; 4. Positioning holes; 5. Positioning mechanism mounting bolts; 6. Positioning mechanism. To ensure accurate positioning and counter-drilling, the jig requires an H9 tolerance for the metal mounting holes, a ±0.05 tolerance for the positioning surfaces, and an F7 tolerance for the positioning slots.

[0040] Step six, making a metal hole drilling jig, wherein the three bolt installation holes are made by the fake parts in step four, so as to ensure that the empty space after the metal hole is made is consistent with the cover body.

[0041] Step 7: Use a drilling jig to position the metal part to be replaced, then drill holes in stages using a drill sleeve. The drilling path is from Φ4.0 initial hole to φ4.75 through hole, φ5.5H8 through hole, φ6.2H through hole 8, and φ6.35H8 reaming to create the bolt installation holes.

[0042] Step 8: Align the newly replaced metal parts with the holes on the composite material cover, connect them with bolts, and complete the installation.

[0043] So far, the purpose of the present invention has been achieved.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A fast and convenient positioning transfer hole making method, characterized in that: The following steps are involved: Analyze the positioning datum of metal parts on traditional jigs, and the positioning datum of metal parts and composite material covers; Design and manufacture metal dummy parts according to the above positioning benchmarks; Assemble the metal dummy and the composite cover together and make holes; Design and manufacture hole drilling jigs based on metal fake parts; Use a drilling jig to drill holes in the metal parts that need to be replaced; The metal piece with the holes made therein is installed on the composite material cover.

2. A fast and convenient positioning transfer hole making method according to claim 1, characterized in that: The positioning benchmarks of metal parts on traditional jigs include: Positioning reference A: metal part positioning hole; Positioning reference B: metal part positioning surface; Positioning reference C: metal part positioning groove.

3. A fast and convenient positioning and transition hole making method according to claim 1, characterized in that: The positioning benchmarks for metal parts and composite cover bodies include: Positioning reference A: metal part positioning hole; Positioning reference B: metal part positioning surface; Positioning reference C: Metal bolt mounting hole.

4. A fast and convenient positioning and transition hole making method according to claim 2, characterized in that: The metal dummy is designed and manufactured according to the above positioning reference, specifically: according to the structural form of the metal part, the surface of the positioning reference A, B, and C is retained to design the metal dummy; the metal dummy does not need to be consistent with the shape of the metal part, and only the positioning reference features on the assembly tool are retained.

5. A fast and convenient positioning and transition hole making method according to claim 4, characterized in that: When designing metal dummies, the accuracy of the positioning features and the matching accuracy of the grooves and shafts must be considered; the tolerance requirement for the design positioning datum A is h9; the tolerance requirement for datum B is ±0.05; the tolerance requirement for the datum C positioning groove is H7; and the metal dummies are manufactured according to the above tolerance requirements and forms.

6. A fast and convenient positioning and transition hole making method according to claim 5, characterized in that: The method of assembling the metal dummy and the composite material cover together and making holes is as follows: positioning and installing the manufactured metal dummy and the composite material cover together on an assembly tool, and making holes using a drilling jig to make the holes for the metal dummy.

7. A fast and convenient positioning and transition hole making method according to claim 1, characterized in that: The drilling jig is designed and manufactured according to the metal dummy, specifically: based on the positioning reference of the metal dummy, the drilling jig is designed, including a positioning mechanism, a clamping device, a detachable drill sleeve, a drilling jig base, bolt mounting holes, positioning holes and positioning mechanism mounting bolts.

8. A fast and convenient positioning and transition hole making method according to claim 7, characterized in that: The tolerance requirement for the bolt installation holes of metal parts in the hole drilling jig is H9, the tolerance requirement for the positioning surface is ±0.05; the tolerance requirement for the positioning hole is f7.

9. A fast and convenient positioning and transition hole making method according to claim 1, characterized in that: The method of using a hole-making drill jig to make holes in the metal part to be replaced specifically includes: using the hole-making drill jig to position the metal part to be replaced, and then making holes through a drill sleeve.

10. A fast and convenient positioning transfer hole making method according to claim 1, characterized in that: The step of installing the metal piece with the holes formed therein on the composite material cover comprises aligning the metal piece with the holes formed therein with the holes on the composite material cover, connecting them with bolts, and completing the installation.

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