CN-117533515-B - Method for coordinating assembly of hanging connectors

CN117533515BCN 117533515 BCN117533515 BCN 117533515BCN-117533515-B

Abstract

The invention belongs to the technical field of aviation manufacturing assembly, and relates to an assembly coordination method of a hanging connector. The invention aims at ensuring the assembly position degree of the hanging joint and the coordination accuracy of the intersection point hole, and formulates corresponding assembly technical schemes, including technical scheme formulation, assembly tool selection, process flow planning and process method determination. The invention ensures that the assembly position degree of the hanging joint meets the design requirement through the frame positioner, the process joint and the installation model, and ensures that the coordination accuracy of the hanging joint intersection point hole meets the design requirement through transmitting the dimension of the hanging joint intersection point hole through the gauge and reserving the process allowance and two times of hinge intersection point holes. The invention changes the conventional assembly method, improves the assembly position degree of the hanging joint and the coordination accuracy of the intersection point holes, has reasonable technical scheme, and the process method is feasible, and can meet the design technical requirements by the assembly of the hanging joint through the verification of an actual installation machine.

Inventors

CHEN ZHIHONG
GUAN HONG
CHU WEIPING
LIANG CUI
LI YANG
CAO JIE
GAO YICHUAN
ZHANG ZHE
YANG QIANG
WU HUI

Assignees

陕西飞机工业有限责任公司

Dates

Publication Date: 20260505
Application Date: 20231027

Claims (9)

1. A coordination method for assembling hanging joints is characterized by comprising a hanging joint assembling scheme, wherein a front hanging joint is assembled on a front machine body, a rear hanging joint is assembled on front and middle machine body components in a butt joint mode, a process joint is arranged on the front machine body, when the rear hanging joint is assembled, a hanging joint and the process joint are used as reference positioning hanging device installation models, the assembling position of the rear hanging joint is determined according to the hanging device installation models, a hanging joint positive intersection point gauge and a hanging joint negative intersection point gauge are arranged and used for guaranteeing coordination of an assembling frame positioner, the hanging device installation models, the hanging joint and intersection point hole sizes when the hanging device is manufactured, meanwhile, the hanging device and the hanging joint intersection point hole are reserved with process allowance, assembly errors are eliminated through two hinge assembly in the assembling process, finally, the requirement of the hanging joint assembling position degree and the intersection point hole coordination accuracy is guaranteed, and the hanging joint assembling position degree guaranteeing measures are taken, When the lower part of the front machine body is assembled, a front hanging joint positioner is arranged on an assembly frame, and the assembly position of the front hanging joint on the front machine body is determined according to the assembly frame; The front machine body is provided with a process joint, a process joint positioner is arranged on an assembly frame at the lower part of the front machine body, and the process joint is assembled together with a front hanging joint in the lower assembly procedure of the front machine body; The device comprises a front hanging connector, a rear hanging connector, a hanging device mounting model and a connecting device, wherein the front hanging connector and the rear hanging connector are assembled at the same time; and after the front and middle body parts are butted, positioning a mounting model of the suspension device by taking the front suspension joint and the process joint of the front body as references, and determining the assembly position of the rear suspension joint according to the mounting model.
2. The method of claim 1, wherein the method is characterized in that the method comprises the steps of providing intersection point hole coordination accuracy assurance measures, setting intersection point positive and negative gauges of hanging connectors, designing and manufacturing intersection point negative gauges of the hanging connectors according to design patterns, determining the intersection point size according to the design patterns, designing and manufacturing intersection point positive gauges of the hanging connectors according to the negative gauges, preparing the intersection point hole sizes of the positive gauges and the negative gauges of the hanging connectors according to the negative gauges, transmitting the intersection point hole sizes of assembly tools, assemblies and components, ensuring the coordination of the intersection point hole sizes of the tools, the assemblies, the components and the components, reserving process allowance of the intersection point holes of front hanging connectors and rear hanging connectors, reserving process allowance of the intersection point hole when the hanging connector parts are manufactured, processing the phi 10 holes according to phi 6, and coordinating the reaming holes when the hanging connectors are assembled at the later stage; after the front and rear hanging connectors are installed on the machine body, the hanging connector intersection point holes are subjected to primary reaming according to a drilling jig arranged on the installation model, phi 10 intersection point holes are machined from phi 6 primary holes to phi 8, positional deviation generated between the hanging connector intersection point holes after the hanging connector is assembled is eliminated, and coordination between the hanging connector intersection point holes and the installation model is ensured; When the task system hanging device is installed on an airplane, the hanging device is firstly pre-installed, the intersection point pre-installation hole is phi 8, the hanging device and the hanging connector intersection point hole are subjected to secondary reaming, the intersection point hole is processed to a final hole size phi 10 from phi 8, the position deviation between the hanging device and the hanging connector intersection point hole is eliminated, the coordination of the hanging device and the hanging connector intersection point hole is ensured, and then the hanging device and the hanging connector are finally connected.
3. The method of claim 2, wherein the step of determining the position of the substrate comprises, The front hanging joint is assembled, When the front fuselage lower wall plates are combined, the connecting part of the front hanging joint structure is reserved and riveted, so that the assembling and connecting requirements of the front hanging joint in the subsequent process are met; the lower frame of the front machine body is provided with a hanging joint positioner which is used for determining the assembling position of the front hanging joint; The front hanging connector is assembled on the lower assembly of the front machine body, and when the lower assembly of the front machine body is assembled, the front hanging connector is positioned according to the frame positioner for assembly connection.
4. A method according to claim 3, wherein the rear hitch coupler is assembled and the lower portion of the forward fuselage is fitted with a process coupler; a process joint and a positioner are arranged on the lower part of the front machine body, and the process joint is arranged on the lower part component of the front machine body, and the process joint and the front hanging joint are used as the assembly standard of a subsequent process hanging device installation model; the device is used for positioning the rear hanging joint and coordinating the hole position size of the intersection point of the front hanging joint and the rear hanging joint; When the rear lower wall plate assembly of the middle machine body is combined, the connecting part of the rear hanging joint structure is left riveted, so that the assembling and connecting requirements of the front hanging joint in the subsequent process are met; when the lower assembly component of the middle machine body is assembled, the connecting part of the rear hanging joint structure is reserved and riveted, so that the assembling and connecting requirements of the front hanging joint in the subsequent process are met; And after the front machine body and the middle machine body are in butt joint, positioning the mounting model of the hanging device by taking the front hanging connector and the process connector as references, positioning the rear hanging connector according to the mounting model, and assembling and connecting.
5. The method according to claim 4, wherein the intersection point holes of the hanging connectors are coordinated, and the intersection point hole sizes of the hanging connectors among the assembly tools, assemblies and components are transferred according to the positive and negative gauges of the intersection points of the hanging connectors, so that the assembly coordination is ensured; when front and back hanging joint parts are processed, the process allowance is reserved in the intersection point hole, and a phi 10 hole is processed according to phi 6; the process allowance is reserved in the cross point hole of the suspension device, the technical requirement is provided for the delivery state of the suspension device of the task system, the process allowance is reserved in the cross point hole, and the phi 10 hole is processed according to phi 8 and is used for hinging the cross point hole when the suspension device is installed, so that the connection requirement of the cross point hole is met; After the front and rear hanging connectors are assembled, installing a drill jig on a model according to a hanging device, and hinging the hanging connector intersection hole to ensure that the hanging connector intersection hole is coordinated with the position and the size of the installation model; When the task system hanging device is installed on the machine body, the bolt is used for positioning the hanging device and the hanging connector on the machine body, and then the intersection point Kong Peijiao of the hanging device and the hanging connector is connected to the size of the final hole, so that the coordination of the position and the size of the intersection point hole of the hanging device and the hanging connector is ensured.
6. The method of claim 5, wherein the hanging-joint intersection gauge comprises a hanging-joint intersection counter-gauge, The method is used for coordinating the sizes of the intersection points when the hanging joint positive gauge is manufactured, coordinating the sizes of the intersection points when the front hanging joint and the rear hanging joint are manufactured, and coordinating the sizes of the intersection points when the process joint is manufactured; The hanging joint intersection point positive gauge is used for installing a hanging joint of a lower frame of a front machine body and a process joint positioner, is used for coordinating the sizes of intersection points when a hanging device is manufactured, and is used for coordinating the sizes of intersection points when a hanging device installation model is manufactured.
7. The method of claim 6, wherein a front hitch coupler locator is provided on the front fuselage lower section frame for locating and installing a front hitch coupler; the lower part of the front machine body is provided with the process joint and the positioner thereof, and the process joint is used for positioning the installation model of the hanging device and positioning the hanging joint after installation.
8. The method of claim 7, wherein the step of determining the position of the probe is performed, The hanging device installation model is provided with a hanging device installation model and is used for positioning the rear hanging joint, coordinating the position and the size of the intersection point hole of the front hanging joint and the rear hanging joint and coordinating the intersection point hole of the hinge.
9. The method of claim 8, wherein a process connection is provided at the forward fuselage for post-positioning the suspension installation model.

Description

Method for coordinating assembly of hanging connectors Technical Field The invention belongs to the technical field of aviation manufacturing assembly, and relates to an assembly coordination method of a hanging connector. Background The hanging joint is an installation fulcrum of the hanging device on the outer surface of the aircraft body, and in order to ensure that the hanging device is installed smoothly, the requirements on the assembly position degree and the coordination accuracy of the intersection point holes are high. The assembly position degree refers to the dimensional tolerance of the hanging joint on the machine body from the frame axis surface, the symmetrical axis surface and the horizontal reference surface of the airplane and the spacing between the front hanging joint and the rear hanging joint, the smaller the tolerance is, the stricter the position degree requirement is, the coordination accuracy refers to the degree of the coincidence of the hole size (relative spacing and aperture accuracy) of the hanging joint and the intersection point of the hanging device, the higher the dimensional coincidence degree is, the higher the coordination accuracy is, and the better the coordination of the assembly connection of the two is. In general, for hanging connectors on the same aircraft component, when the component is assembled, an assembly fixture can be adopted to ensure the coordination accuracy of the assembly position degree of the hanging connector and the intersection point hole, but for hanging connectors of hanging devices distributed on different aircraft components, the conventional assembly method cannot meet the requirements of the coordination accuracy of the assembly position degree of the hanging connector and the intersection point hole. Disclosure of Invention Object of the Invention Two hanging joints are arranged on the outer surface of the lower part of the fuselage of an aircraft for hanging a mission system, and the installation position is shown in figure 1. The hanging joints are distributed on the front body and the middle body of the machine body, the tolerance of the position degree is +/-1 mm, and the bolt hole shaft fit at the joint of the hanging joints and the intersection point of the task system hanging device is f9/H9. According to a conventional assembly method, the hanging joints are assembled on the front machine body and the middle machine body respectively, and after the front machine body and the middle machine body are in butt joint, the two hanging joints are influenced by assembly errors (frame distance deviation +/-1 mm, symmetry axis deviation +/-1 mm, horizontal reference plane deviation +/-1 mm and machine body appearance deviation +/-3 mm), and the assembly position degree of the two hanging joints and the coordination accuracy of the intersection point holes are difficult to meet design requirements. How to ensure that the assembly position degree and the coordination accuracy of the intersection point holes of hanging joints distributed on two machine body parts reach the design requirements is a technical problem to be solved by the invention. The invention adopts the assembly tools such as the intersection point gauge, the frame positioner, the process joint, the suspension device installation model and the like to plan reasonable and feasible assembly process flow and method, and can ensure that the assembly position degree of the suspension joint and the coordination accuracy of the intersection point hole meet the design requirement. Technical proposal In order to solve the technical problems, the invention realizes the assembly of the hanging connector by the following technical scheme. An assembly coordination method of a hanging joint comprises the following steps: 1.1 hanging Joint Assembly scheme The front hanging connector is assembled on the front machine body, and the rear hanging connector is assembled after the front machine body component and the middle machine body component are in butt joint. When the front machine body is provided with the process connector and the rear hanging connector is assembled, the front hanging connector and the process connector are used as reference to position the hanging device installation model, and the assembly position of the rear hanging connector is determined according to the hanging device installation model. See fig. 2. And meanwhile, the hanging device and the hanging connector intersection point holes are reserved with process allowance, assembly errors are eliminated through two hinge assembly in the assembly process, and finally the assembly position of the hanging connector and the coordination accuracy requirement of the intersection point holes are ensured. 1.2 Measures for ensuring the degree of the assembly position of the hanging connector 1) And (5) assembling a front hanging connector. When the lower part of the front machine body is assembled, a front hanging joint positio