Assembly structure of section butt joint
By reserving reaming hole allowance and staggered mating teeth design in the assembly structure of segment docking joints, the problems of high-precision tooling positioners and parts processing in the existing technology are solved, realizing low-cost and efficient assembly process and position control, which is suitable for mass production of aircraft segment docking joints.
Patent Information
- Application Number
- CN202423235333.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-12-27
AI Technical Summary
In the existing assembly process of aircraft segment docking joints, the tooling positioner has high precision requirements, the parts are difficult to process, the assembly is complex and costly, and the positional accuracy requirements are strict, making it difficult to meet the needs of mass production.
An assembly structure for segmented butt joints is adopted. By reserving the amount of reaming holes, assembly stress is released, the accuracy requirements of the tooling locator and the butt joint are reduced, and the mating teeth are matched by staggered arrangement. The tooling locator with conventional accuracy is used for positioning and the amount of reaming holes is used for compensation.
It reduces the accuracy requirements of assembly tooling positioners and parts machining, simplifies the assembly process, reduces manufacturing costs, and achieves efficient positional control through reaming compensation, making it suitable for mass production.
Smart Images
Figure CN223521047U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to aircraft technical field, concretely is a kind of assembly structure of section butt joint. BACKGROUND
[0002] When general aircraft section butt joint is at least adopted 2 groups or 2 groups above single double-ear butt joint structure form, butt joint hole diameter is usually 10mm (the following butt joint hole is default for this diameter), in the part manufacturing stage, the installation position of butt joint is ensured by assembly tooling positioner when assembling.
[0003] The above-mentioned scheme is more strict to assembly process, and the position degree of general tooling positioner is 0.1mm, the position degree of part positioned and installed using positioner can reach 0.2mm, but the position degree requirement of section butt joint is higher, therefore the precision requirement of tooling positioner is higher than the precision requirement of butt joint itself, and the production cost is higher, and the repeated measurement period is longer, which is not conducive to batch production.
[0004] The deficiencies of the existing mainstream section-level butt joint assembly method are as follows:
[0005] a: the existing section-level butt joint assembly method has high precision requirement for assembly tooling positioner, and the tooling positioner cannot be deformed during assembly process, and the positioner cannot be removed before the butt joint is completely installed;
[0006] b: the existing section-level butt joint assembly method has high precision requirement for butt joint hole, and it is difficult to meet the engineering requirement during part processing stage;
[0007] c: when the installation position of butt joint is out of tolerance, the processing cost is high, and it is difficult to meet the original engineering requirement after processing.
[0008] Therefore, we propose a kind of assembly structure of section butt joint to solve the above problems. Utility model content
[0009] (I) technical problem solved
[0010] In view of the deficiencies of the prior art, the utility model provides an assembly structure of section butt joint, which reduces the precision requirement of assembly tooling positioner and butt joint during processing stage, and when assembly stress is generated in each part during assembly process, the stress can be released through the reserved hinge hole amount, so that the problems of high manufacturing cost, low structural strength and complex installation are solved.
[0011] (II) technical scheme
[0012] In order to realize the above-mentioned purposes of improving structural strength and facilitating installation, the utility model provides the following technical scheme: an assembly structure of section butt joint, including first installation part, second installation part and base, the base includes tool jig and tool positioner fixed on both sides of the top of tool jig, the tool positioner is provided with positioner hole, the tool locking pin is arranged in the positioner hole, the first installation part and the second installation part are fixed on the tool positioner through the tool locking pin.
[0013] As a further description of the utility model: the first installation part includes section one and first butt joint, and the section one and the first butt joint are fixedly connected, and the first butt joint is provided with butt hole one matched with the positioner hole.
[0014] As a further description of the utility model: the second installation part includes section two and second butt joint, and the section two and the second butt joint are fixedly connected, and the second butt joint is provided with butt hole two matched with the positioner hole.
[0015] As a further description of the utility model: the first butt joint and the second butt joint are provided with butt teeth, and the butt teeth of the first butt joint and the butt teeth of the second butt joint are staggered.
[0016] As a further description of the utility model: the section one, the section two, the first butt joint and the second butt joint are freely matched according to the installation type.
[0017] As a further description of the utility model: the tool locking pin includes rotating part, locking part and limiting part, and the limiting part and the locking part are detachably installed.
[0018] (Three) beneficial effects
[0019] Compared with the prior art, the utility model provides an assembly structure of section butt joint, and has the following beneficial effects:
[0020] 1. Reduce the assembly tool positioner precision requirement, reduce the manufacturing cost.
[0021] 2. Reduce the hole precision requirement of butt joint in the part processing stage, reduce the manufacturing cost.
[0022] 3. When the assembly stress of each part is generated in the assembly process, the stress can be released through the reserved reaming hole amount, and the structural strength is improved.
[0023] 4. The whole assembly process controls the cost lower, when the installation position of butt joint is out of tolerance, the reserved reaming hole amount can be compensated, finally satisfies the engineering requirement, and the out-of-tolerance treatment is simple and fast. DRAWINGS
[0024] Figure 1 It is the part explosion structure schematic view of the utility model;
[0025] Figure 2 It is the part assembly structure schematic view of the utility model.
[0026] In the drawing: 1, tool holder; 2, tool positioner; 3, section one; 4, first butt joint; 5, section two; 6, second butt joint; 7, tool locking pin. DETAILED DESCRIPTION
[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0028] Please refer to Figures 1-2 The assembly structure of a section butt joint includes a first mounting part, a second mounting part and a base, the base includes a tool holder 1 and tool positioners 2 fixed on both sides of the top of the tool holder 1, the tool positioners 2 are provided with positioner holes, the tool positioners 7 are arranged in the positioner holes, and the first mounting part and the second mounting part are fixed on the tool positioners through the tool locking pins 7.
[0029] The first mounting part includes a section one 3 and a first butt joint 4, the section one 3 and the first butt joint 4 are fixedly connected, the first butt joint 4 is provided with a butt joint hole one matched with the positioner hole, the second mounting part includes a section two 5 and a second butt joint 6, the section two 5 and the second butt joint 6 are fixedly connected, the second butt joint 6 is provided with a butt joint hole two matched with the positioner hole, the first butt joint 4 and the second butt joint 6 are all provided with butt joint teeth, the butt joint teeth of the first butt joint 4 and the butt joint teeth of the second butt joint 6 are staggered, and the section one 3, the section two 5, the first butt joint 4 and the second butt joint 6 are freely matched according to the installation type.
[0030] The tool locking pin 7 includes a rotating part, a locking part and a limiting part, and the limiting part and the locking part are detachably installed.
[0031] Working principle: the section one 3 and the section two 5 need to be assembled by using assembly tools respectively, after assembly, the butt joint teeth on the second butt joint 6 on the section two 5 and the butt joint teeth on the first butt joint 4 on the section one 3 are butted (the final hole diameter of the first butt joint 4 and the second butt joint 6 is φ10mm), and the general assembly is completed.
[0032] In the part manufacturing stage, the diameters of the butt joint hole one and the butt joint hole two are only machined to φ9mm, that is, a reaming amount of 1mm in diameter is reserved, and in the case that the hole position deviation is not more than 0.5mm after assembly, the reaming amount can be compensated.
[0033] In the assembly stage, the parts are positioned and installed by using the φ9mm hole matching tool positioner 2 on the first butt joint 4 and the second butt joint 6, the tool positioner 2 adopts a conventional precision (0.1mm), and the assembly of the section one 3 and the section two 5 is completed respectively.
[0034] After the assembly of the section one 3 and the section two 5 is completed, the butt joint is performed on the assembly tool, that is, Figure 2 The state shown.
[0035] A group of tool locking pins 7 are removed, the butt joint hole one and the butt joint hole two are drilled and reamed to the final hole (φ10mm) through the positioner hole, the tool locking pins 7 are reinstalled after the drilling and reaming are completed, then the next group of tool locking pins 7 are removed, until all the joint hole drilling and reaming are completed, and the assembly is completed.
[0036] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. An assembly structure of a segment butt joint, comprising a first mounting portion, a second mounting portion, and a base, characterized by: The base comprises a tool holder (1) and tool locators (2) fixed on both sides of the top of the tool holder (1), the tool locators (2) are provided with locator holes, and tool locking pins (7) are arranged in the locator holes, and the first mounting part and the second mounting part are fixed on the tool locators (2) through the tool locking pins (7).
2. An assembly of segmental butt joints according to claim 1, characterized in that: The first mounting part comprises a section one (3) and a first butt joint (4), the section one (3) and the first butt joint (4) are fixedly connected, and the first butt joint (4) is provided with a butt joint hole one matched with the locator hole.
3. An assembly of segmental butt joints according to claim 2, characterized in that: The second mounting part comprises a section two (5) and a second butt joint (6), the section two (5) and the second butt joint (6) are fixedly connected, and the second butt joint (6) is provided with a butt joint hole two matched with the locator hole.
4. An assembly of segmental butt joints according to claim 3, characterized in that: The first butt joint (4) and the second butt joint (6) are provided with butt joint teeth, and the butt joint teeth of the first butt joint (4) and the second butt joint (6) are staggered.
5. An assembly structure of a segment butt joint according to claim 3, characterized in that: The section one (3), the section two (5), the first butt joint (4) and the second butt joint (6) are freely matched according to the installation type.
6. An assembly of segmental butt joints according to claim 1, characterized in that: The tool locking pin (7) comprises a rotating part, a locking part and a limiting part, and the limiting part and the locking part are detachably installed.