A method for coordinating the assembly of a hanging joint.
By using assembly tooling such as intersection gauges, jig locators, and process joints on aircraft components, combined with a reasonable assembly process and a two-stage reaming method, the problems of the assembly position accuracy of the hanger joint and the coordination accuracy of the intersection holes were solved, and the accurate connection required by the design was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHAANXI AIRCRAFT CORPORATION
- Filing Date
- 2023-10-27
- Publication Date
- 2026-05-05
AI Technical Summary
Existing technologies cannot effectively guarantee the assembly position accuracy and intersection hole coordination accuracy of the hanger joints distributed on different aircraft components, making it difficult to meet design requirements.
Assembly tools such as intersection gauges, frame locators, process joints, and suspension device installation models are used to plan a reasonable assembly process flow. Assembly errors are eliminated by double-reaming the holes to ensure the assembly position accuracy of the hanging joints and the coordination accuracy of the intersection holes.
The assembly position accuracy of the hanging joint and the accuracy of the intersection hole have met the design requirements, satisfying the connection requirements between the suspension device and the machine body hanging joint.
Smart Images
Figure CN117533515B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of aerospace manufacturing and assembly technology, and relates to an assembly coordination method for a hanging joint. Background Technology
[0002] The suspension joint is the mounting fulcrum for the suspension system on the outer surface of the aircraft fuselage. To ensure smooth installation of the suspension system, the accuracy of its assembly position and the coordination of the intersection holes are required to be high. Assembly position refers to the dimensional tolerances of the suspension joint after it is assembled on the fuselage, relative to the aircraft frame axis plane, symmetry axis plane, horizontal reference plane, and the distance between the front and rear suspension joints. The smaller the tolerance, the stricter the position requirement. Coordination accuracy refers to the degree to which the dimensions (relative spacing, hole diameter accuracy) of the intersection holes of the suspension joint and the suspension system match. The higher the degree of dimensional matching, the higher the coordination accuracy, and the better the coordination of the assembly connection between the two.
[0003] Normally, for suspension joints located on the same aircraft component, assembly fixtures can be used during component assembly to ensure the accuracy of the suspension joint's assembly position and the coordination of the intersection holes. However, for suspension joints distributed on different aircraft components, conventional assembly methods cannot meet the requirements for the accuracy of the suspension joint's assembly position and the coordination of the intersection holes. Summary of the Invention
[0004] Purpose of the invention
[0005] Two pylon joints are installed on the lower outer surface of a certain type of aircraft to suspend the mission system, as shown in Figure 1. The pylon joints are distributed on the forward fuselage and mid-fuselage components, with a positional tolerance of ±1mm. The bolt hole fit at the junction of the pylon joint and the mission system suspension device is f9 / H9. According to conventional assembly methods, the pylon joints are assembled separately on the forward and mid-fuselage components. However, after the forward and mid-fuselage components are joined, assembly errors (frame spacing deviation ±1mm, symmetry axis deviation ±1mm, horizontal reference plane deviation ±1mm, fuselage shape deviation ±3mm) make it difficult to meet the design requirements for the assembly positional accuracy and the coordination accuracy of the intersection holes of the two pylon joints. How to ensure that the assembly positional accuracy and the coordination accuracy of the intersection holes of the pylon joints distributed on the two fuselage components meet the design requirements is the technical problem that this invention aims to solve.
[0006] By using assembly tooling such as intersection gauges, frame locators, process joints, and suspension device installation models, this invention plans a reasonable and feasible assembly process flow and method, which can ensure that the assembly position accuracy of the hanging joint and the coordination accuracy of the intersection holes meet the design requirements.
[0007] Technical solution
[0008] To solve the above-mentioned technical problems, the present invention achieves the assembly of the hanging joint through the following technical solution.
[0009] A method for coordinating the assembly of a suspension joint includes the following steps:
[0010] 1.1 Hanging Joint Assembly Scheme
[0011] The front suspension joint is assembled in the front fuselage, while the rear suspension joint is assembled after the front and middle fuselage components are joined. A process joint is located in the front fuselage. During the assembly of the rear suspension joint, the suspension device installation model is positioned using the front suspension joint and process joint as references, and the assembly position of the rear suspension joint is determined according to the suspension device installation model. See [link / reference]. Figure 2 As shown.
[0012] The positive and negative intersection gauges of the hanging joint are set to ensure the coordination of the intersection hole dimensions during the manufacturing of the assembly frame locator, the installation model of the suspension device, the hanging joint, and the suspension device. At the same time, process allowances are reserved for the intersection holes of the suspension device and the hanging joint. Assembly errors are eliminated by two reamings during the assembly process, ultimately ensuring the accuracy of the assembly position of the hanging joint and the coordination of the intersection holes.
[0013] 1.2 Measures to ensure the positional accuracy of the hanging joint assembly
[0014] 1) Front hanger joint assembly. When assembling the lower part of the front fuselage, a front hanger joint locator is set on the assembly frame, and the assembly position of the front hanger joint on the front fuselage is determined according to the assembly frame.
[0015] 2) Process joints are installed on the front fuselage. A process joint locator is installed on the assembly frame at the lower part of the front fuselage. The process joints are installed together with the front hanging joints during the assembly process at the lower part of the front fuselage.
[0016] 3) Set up a suspension device installation model. Due to the strict requirements for the assembly position of the front and rear suspension joints, conventional assembly methods are difficult to meet the accuracy requirements. Therefore, a suspension device installation model is set up to coordinate the assembly position of the front and rear suspension joints and ensure that the assembly position of the front and rear suspension joints meets the design requirements.
[0017] 4) Rear suspension joint assembly. After the front and middle fuselage components are connected, the installation model of the suspension device is positioned based on the front suspension joint and process joint located on the front fuselage, and the assembly position of the rear suspension joint is determined according to the installation model.
[0018] 1.3 Measures to ensure the accuracy of the intersection hole coordination
[0019] 1) Set up positive and negative gauges for the intersection of the hanging joint. Design and manufacture the negative gauge for the intersection of the hanging joint according to the design drawings, and determine the intersection dimensions according to the design drawings; design and manufacture the positive gauge for the intersection of the hanging joint according to the negative gauge, and configure the hole dimensions of the positive gauge intersection according to the negative gauge.
[0020] The positive and negative gauges at the intersection of the hanging joint are used to transmit the dimensions of the intersection holes between assembly tooling, components, and parts, ensuring that the dimensions of the intersection holes between tooling and components, components and parts, and parts and parts are coordinated.
[0021] 2) Allowance for the intersection holes of the front and rear hanger joints. When manufacturing hanger joint parts, allowance is reserved for the intersection holes. Φ10 holes are machined as Φ6. The allowance for the intersection holes is used to coordinate the reaming during the later assembly of the hanger joints.
[0022] 3) First reaming of the intersection holes of the hanging joints. After the front and rear hanging joints are installed on the machine body, the intersection holes of the hanging joints are reamed for the first time according to the drilling jig set on the installation model. The Φ10 intersection hole is machined from the initial Φ6 hole to Φ8 to eliminate the positional deviation between the intersection holes after the hanging joints are assembled and to ensure that the intersection holes of the hanging joints are coordinated with the installation model.
[0023] 4) Second reaming of the intersection hole of the suspension joint. When the mission system suspension device is installed on the aircraft, the suspension device is first pre-installed (the pre-installation hole at the intersection is Φ8). The intersection hole of the suspension device and the suspension joint is then reamed a second time, and the intersection hole is machined from Φ8 to a final hole size of Φ10. This eliminates the positional deviation between the suspension device and the intersection hole of the suspension joint, ensuring that the dimensions of the suspension device and the intersection hole of the suspension joint are coordinated. Then, the suspension device and the suspension joint are finally connected.
[0024] 2.2 Process Flow
[0025] For the assembly process of the hanging joint, see Figure 3 As shown.
[0026] 2.3 Process Method
[0027] 2.3.1 Front Hanger Joint Assembly
[0028] ① Rivets are left on the lower front fuselage panel assembly. When assembling the lower front fuselage panel, rivets are left on the connection parts of the front hanger joint structure to meet the assembly and connection requirements of the front hanger joint in subsequent processes.
[0029] ② A hanger joint locator is installed on the lower frame of the front fuselage. The frame locator is used to determine the assembly position of the front hanger joint.
[0030] ③ Assembly of the front suspension connector on the lower front fuselage assembly. When assembling the lower front fuselage assembly, position the front suspension connector using the frame locator and then connect it.
[0031] 2.3.2 Rear Hanger Joint Assembly
[0032] ① Install process connectors on the lower part of the front fuselage. Set process connectors and locators on the lower frame of the front fuselage, and install process connectors on the lower components of the front fuselage. These process connectors, together with the front suspension connectors, serve as the assembly reference for the installation model of the suspension device in subsequent processes.
[0033] ② Set up the installation model for the suspension device. This is used to position the rear hanger joint and coordinate the position and size of the intersection holes of the front and rear hanger joints.
[0034] ③ Rivets are left on the lower rear fuselage panel assembly. When assembling the lower rear fuselage panel, rivets are left on the connection parts of the rear hanging joint structure to meet the assembly and connection requirements of the front hanging joint in subsequent processes.
[0035] ④ Rivets are left on the lower rear fuselage components. When assembling the lower mid-fuselage components, rivets are left on the connection parts of the rear suspension joint structure to meet the assembly and connection requirements of the front suspension joint in subsequent processes.
[0036] ⑤ Assembly of the rear suspension joint on the machine body. After the front fuselage and the middle fuselage are connected, the installation model of the suspension device is positioned based on the front suspension joint and the process joint. The rear suspension joint is then positioned according to the installation model and assembled and connected.
[0037] 2.3.3 Coordination of the intersection holes of the hanging joint
[0038] ① Use the positive and negative gauges at the intersection of the hanging joints to transfer the dimensions of the intersection holes of the hanging joints between assembly tooling, components, and parts, ensuring assembly coordination. See the assembly coordination relationship below. Figure 4 .
[0039] ② Leave process allowance for the intersection holes of the hanging joints. When machining the front and rear hanging joint parts, leave process allowance for the intersection holes; for example, a Φ10 hole should be machined as a Φ6 hole.
[0040] ③ Reserved process allowance for the intersection holes of the suspension device. Technical requirements are put forward for the delivery status of the suspension device (finished product) of the mission system. Reserved process allowance for the intersection holes. The Φ10 hole is machined as Φ8 and is used to fit the intersection hole during the installation of the suspension device to meet the connection requirements of the intersection hole.
[0041] ④ First reaming of the intersection holes of the suspension joints. After the front and rear suspension joints are assembled, ream the intersection holes of the suspension joints according to the drill jig on the installation model of the suspension device to ensure that the intersection holes of the suspension joints are coordinated with the position and dimensions of the installation model.
[0042] ⑤ Second reaming of the intersection hole of the suspension joint. When the mission system suspension device is installed on the body, after positioning the suspension device and the suspension joint on the body with a pin, the intersection hole connecting the suspension device and the suspension joint is reamed to the final hole size to ensure that the position and size of the intersection hole of the suspension device and the suspension joint are coordinated.
[0043] 2.4 Assembly fixtures
[0044] 2.4.1 Gauge for intersection of hanging joints
[0045] ① Reverse gauge at the intersection of hanging joints
[0046] Used for dimensional coordination of intersection holes when manufacturing positive gauges for hanging joints, for dimensional coordination of intersection holes when manufacturing front and rear hanging joints, and for dimensional coordination of intersection holes when manufacturing process joints.
[0047] ② Suspension joint intersection gauge
[0048] Used for mounting the lower frame of the front fuselage and the process joint locator; used for coordinating the dimensions of the intersection holes when manufacturing the suspension device; used for coordinating the dimensions of the intersection holes when manufacturing the installation model of the suspension device.
[0049] 2.4.2 Lower frame of the forward fuselage
[0050] ① Install a front hanger connector locator. A front hanger connector locator is installed on the lower frame of the front fuselage for positioning and installing the front hanger connector.
[0051] ② Install process joints and their positioners. Install process joints and their positioners on the lower frame of the front fuselage. The process joints are used to position the model for the suspension device installation, and the suspension joints are hung after positioning and installation.
[0052] See above Figure 5 Figure 6 Figure 7 As shown.
[0053] 2.4.3 Suspension device installation model
[0054] A suspension device installation model is set up to locate the rear hanger joint, coordinate the position and size of the intersection hole of the front and rear hanger joints, and fit the hinge intersection hole. See Figure 8 As shown.
[0055] Furthermore, in step 2) of 2.1.2, considering that the span between the front and rear suspension joints is relatively large and they are distributed on the front and rear fuselage components, and that the rear suspension joint is relatively close to the mating surface of the front and middle fuselage components, a process joint is set at the front fuselage for later positioning of the suspension device installation model.
[0056] The beneficial effects of this application are as follows:
[0057] This invention ensures the assembly position accuracy of the front and rear hanger joints by setting up a frame locator, process joints, and a suspension device installation model, meeting the dimensional requirements for the hanger joint assembly position. By setting up positive and negative intersection gauges to transmit the intersection hole dimensions, reserving process allowances for the intersection holes, and performing two reaming operations on the intersection holes, the invention achieves the coordination and accuracy between the suspension device and the hanger joint intersection holes, meeting the assembly and connection requirements of the suspension device and the machine body hanger joint. Attached Figure Description
[0058] Figure 1-1 This is a schematic diagram of the installation location of the hanging joint;
[0059] Figure 1-2 This is a schematic diagram (AA) showing the installation location of the hanging joint;
[0060] Figure 1-3 This is a schematic diagram of the installation position of the hanging joint in direction A;
[0061] Among them: 1-forward fuselage, 2-middle fuselage, 3-forward and middle fuselage mating surfaces, 4-aircraft horizontal reference plane, 5-forward pylon joint, 6-rear pylon joint, 7-aircraft axis of symmetry, 8-suspension system
[0062] Figure 2 This is a schematic diagram of the assembly and positioning of the front and rear suspension joints;
[0063] Among them: 9-process joint, 10-suspension device installation model
[0064] Figure 3 This is a flowchart of the hanging joint assembly process;
[0065] Figure 4 It is an assembly coordination diagram;
[0066] Figure 5 This is a schematic diagram of a typical hanging joint structure;
[0067] Figure 6-1 This is a schematic diagram of the front fuselage lower frame positioner (front suspension joint positioner);
[0068] Among them: 11-Front hanging joint locator;
[0069] Figure 6-2 This is a schematic diagram of the lower frame positioner of the front fuselage (process joint positioner);
[0070] Among them: 12-Process joint positioner
[0071] Figure 7 This is a schematic diagram of the process joint;
[0072] Figure 8 This is a schematic diagram of the suspension device installation model;
[0073] Figure 9 This is a schematic diagram of the reverse gauge at the intersection of the hanging joint;
[0074] Figure 10 This is a schematic diagram of the positive gauge at the intersection of the hanging joint. Detailed Implementation
[0075] The present invention will be further described below with reference to embodiments. The following description represents only a portion of the embodiments of the present invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0076] 3.1 Analysis of Positional Error in Hanger Joint Assembly
[0077] 3.1.1 Analysis of the positional error of the front hanger joint assembly
[0078] The front suspension connector is assembled in the lower front fuselage assembly and positioned according to the frame locator on the lower front fuselage. The positional error of the front suspension connector mainly consists of the installation error of the frame locator, the assembly error of the front suspension connector, and the assembly deformation error. Under normal circumstances, the installation error of the frame locator is ±0.12mm, the assembly error of the front suspension connector is approximately ±0.10mm, and the assembly deformation error is approximately ±0.05mm. Taking all factors into account, the positional error of the front suspension connector assembly is considered to be no greater than ±0.30mm.
[0079] 3.1.2 Analysis of the positional error of the rear hanger joint assembly
[0080] After the forward fuselage and mid-fuselage components are connected, the installation model is used to position and install the front suspension joint and process joint mounting devices assembled on the forward fuselage. Then, the rear suspension joint is positioned and installed based on the installation model. The positional error of the rear suspension joint mainly consists of the manufacturing error of the installation model, the assembly error of the rear suspension joint, and assembly deformation. The manufacturing error of the installation model is ±0.12mm, the assembly error of the rear suspension joint is approximately ±0.10mm, and the assembly deformation error is approximately ±0.05mm. Taking all factors into consideration, the positional deviation of the front suspension joint assembly is considered to be no greater than ±0.30mm.
[0081] 3.1.3 Analysis of Positional Error in Hanger Joint Assembly
[0082] The overall error of the hanging joint assembly position is composed of the cumulative errors of the front and rear hanging joint assembly positions. Therefore, the error of the hanging joint assembly position is no greater than ±0.60mm, which meets the design tolerance requirement of ±1mm.
[0083] 3.2 Analysis of Accuracy Error in the Coordination of Intersection Holes of Hanger Joints
[0084] 3.2.1 Analysis of the accuracy error of the coordination between the hanging joint and the intersection hole of the installation model
[0085] The positional error of the intersection hole between the hanging joint and the installation model mainly consists of: the positional error of the intersection hole of the hanging joint components, the positional error of the hanging joint assembly, and the positional error of the intersection hole of the installation model. The positional error of the intersection hole of the hanging joint components is ±0.05mm, the positional error of the hanging joint assembly is ±0.60mm, and the positional error of the intersection hole of the installation model is ±0.12mm. Therefore, the positional error of the intersection hole between the hanging joint and the installation model is no greater than ±0.80mm.
[0086] Because a 2mm manufacturing allowance is reserved for the intersection holes, the intersection holes are drilled and reamed according to the installation model. The Φ6 hole is machined to Φ8, which can eliminate the positional error between the hanging joint and the intersection hole of the installation model. After the first reaming, the coordination error between the intersection hole of the hanging joint and the intersection hole of the installation model is basically close to zero.
[0087] 3.2.2 Analysis of the coordination error between the hanging joint and the intersection hole of the suspension device
[0088] The positional error between the intersection hole of the hanger joint and the suspension device mainly consists of the positional error of the intersection hole of the hanger joint and the positional error of the intersection hole of the suspension device.
[0089] After the first boring of the hanging joint, the positional error of the intersection hole can be considered equivalent to that of the intersection hole on the installation model, which is ±0.12mm. The positional error of the intersection hole on the suspension device is ±0.10mm. Therefore, the positional error of the intersection hole between the hanging joint and the suspension device is no greater than ±0.30mm.
[0090] After the first reaming, the intersection hole still has a 2mm process allowance. The intersection hole is then reamed a second time according to the suspension device. The Φ8 hole is machined to the final hole Φ10, which can eliminate the positional error between the hanging joint and the intersection hole of the suspension device.
[0091] After the second reaming of the intersection hole of the hanging joint, the accuracy error of the coordination with the intersection hole of the suspension device is basically close to zero, so as to meet the connection requirements of the intersection of the suspension device and the hanging joint.
[0092] The present invention will now be described in further detail with reference to the accompanying drawings and process flow.
[0093] 1. Front fuselage assembly
[0094] ① Rivets left for assembly of the lower front fuselage panel
[0095] When assembling the lower front fuselage panel assembly, rivets are left on the structure of the front hanger joint 5 installation location to meet the assembly and connection requirements of the front hanger joint 5 in subsequent processes.
[0096] ② Lower part of the front fuselage assembly
[0097] When assembling the lower components of the front fuselage, position and assemble the front hanging joint 5 according to the frame locator 11, and position and assemble the process joint 9 according to the frame locator 12.
[0098] ③Front fuselage 1 final assembly
[0099] The various components are assembled and integrated to form the front fuselage 1.
[0100] 2. Mid-fuselage 2 assembly
[0101] ① Rivets left for assembly of the lower fuselage panel
[0102] During the assembly of the lower fuselage panel assembly, rivets are left on the structure of the rear hanger joint 6 installation location to meet the assembly and connection requirements of the rear hanger joint 6 in subsequent processes.
[0103] ② Rivets left for assembly of lower fuselage components
[0104] During the assembly of the lower fuselage components, rivets are left on the structure of the rear hanger joint 6 installation location to meet the assembly and connection requirements of the rear hanger joint 6 in subsequent processes.
[0105] ③Mid-fuselage 2 final assembly
[0106] The various components are assembled and integrated to form the mid-fuselage 2.
[0107] 3. Dating of front and mid-fuselage components
[0108] The front fuselage 1 and the middle fuselage 2 are connected to each other, and the assembly is completed at the docking surface 3 of the front and middle fuselages.
[0109] 4. Rear suspension connector 6 assembly
[0110] After the front and middle fuselage are docked, the suspension device installation model 10 is positioned and assembled based on the front hanging joint 5 and process joint 9, and the rear hanging joint 6 is positioned and assembled according to the installation model 10.
[0111] 5. First boring of the intersection hole of the hanging joint
[0112] Based on the drill jig set on the installation model 10, the intersection holes of the front hanger joint 5 and the rear hanger joint 6 are reamed. A 4mm process allowance is reserved for the intersection holes of the hanger joints. Manufacturing errors are eliminated by reaming, ensuring the coordination and accuracy of the intersection holes of the hanger joints. During the first reaming, the process allowance of the intersection holes is reduced by 2mm, that is, the diameter of the intersection holes is machined from Φ6 to Φ8.
[0113] 6. Pre-installation of suspension device 8
[0114] The suspension device 8 is pre-installed with the machine body. The suspension device 8 is connected to the front hanger joint 5 and the rear hanger joint 6 with pins. The coaxiality of the intersection holes is checked and the coordination of the intersection holes is analyzed.
[0115] 7. Second boring of the intersection hole of the hanging joint
[0116] The intersection holes of the suspension device 8 with the front hanger joint 5 and the rear hanger joint 6 are reamed. A 2mm process allowance is reserved for the intersection holes, and the intersection holes are machined from Φ8 to the final hole size Φ10H9.
[0117] 8. Installation of suspension device 8
[0118] The suspension device 8 is installed with the machine body, and the final connection is made according to the intersection hole of the hanging joint.
[0119] 2.1.1 Hanging Joint Assembly Scheme
[0120] The front suspension joint is assembled in the front fuselage, while the rear suspension joint is assembled after the front and middle fuselage components are joined. A process joint is located in the front fuselage. During the assembly of the rear suspension joint, the suspension device installation model is positioned using the front suspension joint and process joint as references, and the assembly position of the rear suspension joint is determined according to the suspension device installation model. See [link / reference]. Figure 2 As shown.
[0121] The positive and negative intersection gauges of the hanging joint are set to ensure the coordination of the intersection hole dimensions during the manufacturing of the assembly frame locator, the installation model of the suspension device, the hanging joint, and the suspension device. At the same time, process allowances are reserved for the intersection holes of the suspension device and the hanging joint. Assembly errors are eliminated by two reamings during the assembly process, ultimately ensuring the accuracy of the assembly position of the hanging joint and the coordination of the intersection holes.
[0122] 2.1.2 Measures to ensure the positional accuracy of the hanging joint assembly
[0123] ① Front suspension connector assembly. When assembling the lower part of the front fuselage, a front suspension connector locator is set on the assembly frame, and the assembly position of the front suspension connector on the front fuselage is determined according to the assembly frame.
[0124] ② A process joint is installed on the front fuselage. Considering the large span between the front and rear suspension joints, their distribution across the front and rear fuselage components, and the proximity of the rear suspension joint to the mating surfaces of the front and middle fuselage components, a process joint is installed on the front fuselage for later positioning of the suspension device installation model. A process joint locator is installed on the assembly frame at the lower part of the front fuselage, and the process joint is installed together with the front suspension joint during the assembly process at the lower part of the front fuselage.
[0125] ③ Set up a suspension device installation model. Due to the strict requirements for the assembly position of the front and rear hanger joints, conventional assembly methods are difficult to meet the accuracy requirements. Therefore, a suspension device installation model is set up to coordinate the assembly position of the front and rear hanger joints and ensure that the assembly position of the front and rear hanger joints meets the design requirements.
[0126] ④ Rear suspension joint assembly. After the front and middle fuselage components are connected, the installation model of the suspension device is positioned based on the front suspension joint and process joint located on the front fuselage, and the assembly position of the rear suspension joint is determined according to the installation model.
[0127] 2.1.3 Measures to ensure the accuracy of the intersection hole coordination
[0128] ① Set up positive and negative gauges for the intersection of the hanging joint. Design and manufacture the negative gauge for the intersection of the hanging joint according to the design drawings, and determine the intersection size according to the design drawings; design and manufacture the positive gauge for the intersection of the hanging joint according to the negative gauge, and configure the hole size of the positive gauge intersection according to the negative gauge.
[0129] The positive and negative gauges at the intersection of the hanging joint are used to transmit the dimensions of the intersection holes between assembly tooling, components, and parts, ensuring that the dimensions of the intersection holes between tooling and components, components and parts, and parts and parts are coordinated.
[0130] ② Reserved process allowance for the intersection holes of the front and rear hanger joints. When manufacturing hanger joint parts, reserved process allowance is made for the intersection holes. The Φ10 hole is machined as Φ6. The process allowance for the intersection holes is used to coordinate the reaming during the later assembly of the hanger joints.
[0131] ③ First reaming of the intersection holes of the hanging joints. After the front and rear hanging joints are installed on the machine body, the intersection holes of the hanging joints are reamed for the first time according to the drilling jig set on the installation model. The Φ10 intersection hole is machined from the initial Φ6 hole to Φ8 to eliminate the positional deviation between the intersection holes after the hanging joints are assembled and to ensure that the intersection holes of the hanging joints are coordinated with the installation model.
[0132] ④ Second reaming of the intersection hole of the suspension joint. When the mission system suspension device is installed on the aircraft, the suspension device is first pre-installed (the pre-installation hole at the intersection is Φ8). The intersection hole of the suspension device and the suspension joint is then reamed a second time, and the intersection hole is machined from Φ8 to a final hole size of Φ10. This eliminates the positional deviation between the suspension device and the intersection hole of the suspension joint and ensures that the dimensions of the suspension device and the intersection hole of the suspension joint are coordinated. Then, the suspension device and the suspension joint are finally connected.
[0133] 2.2 Process Flow
[0134] For the assembly process of the hanging joint, see Figure 3 As shown.
[0135] 2.3 Process Method
[0136] 2.3.1 Front Hanger Joint Assembly
[0137] ① Rivets are left on the lower front fuselage panel assembly. When assembling the lower front fuselage panel, rivets are left on the connection parts of the front hanger joint structure to meet the assembly and connection requirements of the front hanger joint in subsequent processes.
[0138] ② A hanger joint locator is installed on the lower frame of the front fuselage. The frame locator is used to determine the assembly position of the front hanger joint.
[0139] ③ Assembly of the front suspension connector on the lower front fuselage assembly. When assembling the lower front fuselage assembly, position the front suspension connector using the frame locator and then connect it.
[0140] 2.3.2 Rear Hanger Joint Assembly
[0141] ① Install process connectors on the lower part of the front fuselage. Set process connectors and locators on the lower frame of the front fuselage, and install process connectors on the lower components of the front fuselage. These process connectors, together with the front suspension connectors, serve as the assembly reference for the installation model of the suspension device in subsequent processes.
[0142] ② Set up the installation model for the suspension device. This is used to position the rear hanger joint and coordinate the position and size of the intersection holes of the front and rear hanger joints.
[0143] ③ Rivets are left on the lower rear fuselage panel assembly. When assembling the lower rear fuselage panel, rivets are left on the connection parts of the rear hanging joint structure to meet the assembly and connection requirements of the front hanging joint in subsequent processes.
[0144] ④ Rivets are left on the lower rear fuselage components. When assembling the lower mid-fuselage components, rivets are left on the connection parts of the rear suspension joint structure to meet the assembly and connection requirements of the front suspension joint in subsequent processes.
[0145] ⑤ Assembly of the rear suspension joint on the machine body. After the front fuselage and the middle fuselage are connected, the installation model of the suspension device is positioned based on the front suspension joint and the process joint. The rear suspension joint is then positioned according to the installation model and assembled and connected.
[0146] 2.3.3 Coordination of the intersection holes of the hanging joint
[0147] ① Use the positive and negative gauges at the intersection of the hanging joints to transfer the dimensions of the intersection holes of the hanging joints between assembly tooling, components, and parts, ensuring assembly coordination. See the assembly coordination relationship below. Figure 4 .
[0148] ② Leave process allowance for the intersection holes of the hanging joints. When machining the front and rear hanging joint parts, leave process allowance for the intersection holes; for example, a Φ10 hole should be machined as a Φ6 hole.
[0149] ③ Reserved process allowance for the intersection holes of the suspension device. Technical requirements are put forward for the delivery status of the suspension device (finished product) of the mission system. Reserved process allowance for the intersection holes. The Φ10 hole is machined as Φ8 and is used to fit the intersection hole during the installation of the suspension device to meet the connection requirements of the intersection hole.
[0150] ④ First reaming of the intersection holes of the suspension joints. After the front and rear suspension joints are assembled, ream the intersection holes of the suspension joints according to the drill jig on the installation model of the suspension device to ensure that the intersection holes of the suspension joints are coordinated with the position and dimensions of the installation model.
[0151] ⑤ Second reaming of the intersection hole of the suspension joint. When the mission system suspension device is installed on the body, after positioning the suspension device and the suspension joint on the body with a pin, the intersection hole connecting the suspension device and the suspension joint is reamed to the final hole size to ensure that the position and size of the intersection hole of the suspension device and the suspension joint are coordinated.
[0152] 2.4 Assembly fixtures
[0153] 2.4.1 Gauge for intersection of hanging joints
[0154] ① Reverse gauge at the intersection of hanging joints
[0155] Used for dimensional coordination of intersection holes when manufacturing positive gauges for hanging joints, for dimensional coordination of intersection holes when manufacturing front and rear hanging joints, and for dimensional coordination of intersection holes when manufacturing process joints.
[0156] ② Suspension joint intersection gauge
[0157] Used for mounting the lower frame of the front fuselage and the process joint locator; used for coordinating the dimensions of the intersection holes when manufacturing the suspension device; used for coordinating the dimensions of the intersection holes when manufacturing the installation model of the suspension device.
[0158] 2.4.2 Lower frame of the forward fuselage
[0159] ① Install a front hanger connector locator. A front hanger connector locator is installed on the lower frame of the front fuselage for positioning and installing the front hanger connector.
[0160] ② Install process joints and their positioners. Install process joints and their positioners on the lower frame of the front fuselage. The process joints are used to position the model for the suspension device installation, and the suspension joints are hung after positioning and installation.
[0161] See above Figure 5 Figure 6 Figure 7 As shown.
[0162] 2.4.3 Suspension device installation model
[0163] A suspension device installation model is set up to locate the rear hanger joint, coordinate the position and size of the intersection hole of the front and rear hanger joints, and fit the hinge intersection hole. See Figure 8 As shown.
[0164] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the meaning consistent with their meaning in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless defined as herein. The specific embodiments described above further illustrate the purpose, technical solutions, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
Claims
1. A method for coordinating the assembly of a hanging joint, characterized in that, This includes the assembly scheme for the suspension joints: the front suspension joint is assembled on the front fuselage, and the rear suspension joint is assembled after the front and middle fuselage components are joined; a process joint is set on the front fuselage; during the assembly of the rear suspension joint, the suspension device installation model is positioned based on the front suspension joint and the process joint, and the assembly position of the rear suspension joint is determined according to the suspension device installation model; positive and negative intersection gauges for the suspension joints are set to ensure the coordination of the dimensions of the intersection holes of the assembly frame locator, the suspension device installation model, and the suspension joints and suspension devices during manufacturing; at the same time, process allowances are reserved for the intersection holes of the suspension devices and suspension joints, and assembly errors are eliminated through two reaming processes during assembly, ultimately ensuring the accuracy of the suspension joint assembly position and the coordination of the intersection holes; measures to ensure the assembly position accuracy of the suspension joints are also included. Front suspension connector assembly; When assembling the lower part of the front fuselage, a front suspension connector locator is set on the assembly frame, and the assembly position of the front suspension connector on the front fuselage is determined according to the assembly frame. A process joint is installed on the front fuselage; a process joint locator is installed on the assembly frame at the lower part of the front fuselage, and the process joint is installed together with the front hanging joint during the assembly process at the lower part of the front fuselage. Set up a suspension device installation model; set up a suspension device installation model to coordinate the assembly position of the front and rear hanger joints and ensure that the assembly position of the front and rear hanger joints meets the design requirements. Rear suspension joint assembly: After the front and middle fuselage components are connected, the installation model of the suspension device is positioned based on the front suspension joint and process joint located on the front fuselage, and the assembly position of the rear suspension joint is determined according to the installation model.
2. The method according to claim 1, characterized in that, Measures to ensure the accuracy of intersection hole coordination include: setting up positive and negative gauges for the intersection of the hanging joints; designing and manufacturing the negative gauge for the intersection of the hanging joints according to the design drawings, with the intersection dimensions determined according to the design drawings; designing and manufacturing the positive gauge for the intersection of the hanging joints according to the negative gauge, with the intersection hole dimensions of the positive gauge matched with the negative gauge; the positive and negative gauges for the intersection of the hanging joints are used to transmit the intersection hole dimensions between assembly tooling, components, and parts, ensuring coordination of intersection hole dimensions between tooling and components, components and parts, and parts and parts; reserving process allowances for the intersection holes of the front and rear hanging joints; during the manufacturing of hanging joint parts, reserving process allowances for the intersection holes, with Φ10 holes machined as Φ6, and the process allowances for the intersection holes are used for coordinating reaming during the later assembly of the hanging joints; First reaming of the intersection hole of the hanging joint; After the front and rear hanging joints are installed on the machine body, the first reaming of the intersection hole of the hanging joint is carried out according to the drilling jig set on the installation model. The Φ10 intersection hole is machined from the initial Φ6 hole to Φ8 to eliminate the positional deviation between the intersection holes after the hanging joints are assembled and to ensure that the intersection hole of the hanging joint is coordinated with the installation model. The second reaming of the intersection hole of the suspension joint; when the mission system suspension device is installed on the aircraft, the suspension device is first pre-installed, and the intersection pre-installation hole is Φ8. The intersection hole of the suspension device and the suspension joint is then reamed for the second time, and the intersection hole is machined from Φ8 to the final hole size of Φ10 to eliminate the positional deviation between the suspension device and the intersection hole of the suspension joint and ensure that the dimensions of the suspension device and the intersection hole of the suspension joint are coordinated; then, the suspension device and the suspension joint are finally connected.
3. The method according to claim 2, characterized in that, Front suspension connector assembly, Rivets are left on the lower front fuselage panel assembly; when assembling the lower front fuselage panel, rivets are left on the connection parts of the front hanger joint structure to meet the assembly and connection requirements of the front hanger joint in subsequent processes. A hanger joint locator is installed on the lower frame of the front fuselage; the frame locator is installed to determine the assembly position of the front hanger joint. The front suspension connector is assembled on the lower front fuselage assembly. When assembling the lower front fuselage assembly, the front suspension connector is positioned according to the frame locator and then assembled and connected.
4. The method according to claim 3, characterized in that, The rear suspension joint is assembled, and the process joint is installed on the lower part of the front fuselage. The process joint and locator are set on the frame of the lower part of the front fuselage, and the process joint is installed on the components of the lower part of the front fuselage. This process joint, together with the front suspension joint, serves as the assembly reference for the installation model of the suspension device in the subsequent process. Set up a model for the installation of the suspension device; to locate the rear hanger joint and coordinate the position and size of the intersection hole of the front and rear hanger joints; Rivets are left on the lower wall panel assembly of the rear fuselage; when assembling the lower wall panel of the middle fuselage, rivets are left on the connection parts of the rear hanging joint structure to meet the assembly and connection requirements of the front hanging joint in subsequent processes. Rivets are left on the lower rear fuselage components; when assembling the lower mid-fuselage components, rivets are left on the connection parts of the rear suspension joint structure to meet the assembly and connection requirements of the front suspension joint in subsequent processes. The rear suspension joint is assembled on the machine body; after the front fuselage and the middle fuselage are connected, the suspension device installation model is positioned based on the front suspension joint and the process joint, the rear suspension joint is positioned according to the installation model, and then assembled and connected.
5. The method according to claim 4, characterized in that, Coordinate the intersection holes of the hanging joints. Use the positive and negative gauges of the hanging joint intersections to transmit the dimensions of the intersection holes of the hanging joints between assembly tooling, components, and parts to ensure assembly coordination. Leave process allowance for the intersection hole of the hanging joint; when machining the front and rear hanging joint parts, leave process allowance for the intersection hole, and machine the Φ10 hole as Φ6; The process allowance is reserved for the intersection holes of the suspension device; the technical requirements for the delivery status of the suspension device of the mission system are put forward, the process allowance for the intersection holes is reserved, and the Φ10 hole is machined as Φ8, which is used to fit the intersection holes during the installation of the suspension device to meet the connection requirements of the intersection holes. The first reaming of the intersection hole of the suspension joint; after the front and rear suspension joints are assembled, the intersection hole of the suspension joint is reamed according to the drill jig on the installation model of the suspension device to ensure that the intersection hole of the suspension joint is coordinated with the position and size of the installation model; The second reaming of the intersection hole of the suspension joint; when the mission system suspension device is installed on the body, after the suspension device and the suspension joint on the body are positioned by the pin, the intersection hole connecting the suspension device and the suspension joint is reamed to the final hole size to ensure that the position and size of the intersection hole of the suspension device and the suspension joint are coordinated.
6. The method according to claim 5, characterized in that, The gauge for the intersection of the suspension joint includes the reverse gauge for the intersection of the suspension joint. Used for dimensional coordination of intersection holes when manufacturing positive gauges for hanging joints, for dimensional coordination of intersection holes when manufacturing front and rear hanging joints, and for dimensional coordination of intersection holes when manufacturing process joints. The alignment gauge for the hanging joint is used to install the hanging joint and process joint locator of the lower frame of the front fuselage, to coordinate the size of the intersection hole when manufacturing the suspension device, and to coordinate the size of the intersection hole when manufacturing the installation model of the suspension device.
7. The method according to claim 6, characterized in that, The lower frame of the front fuselage is equipped with a front hanger joint locator; the front hanger joint locator is installed on the lower frame of the front fuselage for positioning and installing the front hanger joint. A process connector and its positioner are installed; a process connector and its positioner are installed on the lower frame of the front fuselage. The process connector is used to position the model for the installation of the suspension device, and the suspension connector is hung after positioning and installation.
8. The method according to claim 7, characterized in that, The suspension device installation model is set up to locate the rear suspension joint, coordinate the position and size of the intersection hole of the front and rear suspension joints, and match the hinge intersection hole.
9. The method according to claim 8, characterized in that, A process joint is set at the front fuselage for later positioning and installation of the suspension device on the model.
Citation Information
Patent Citations
Airplane spoiler mounting method
CN111746818A
Welding elbow part positioning and double-face coaxial hole machining mechanism
CN216325577U