CN115563702A - Method, device, equipment and medium for analyzing product installation positioning errors - Google Patents

Method, device, equipment and medium for analyzing product installation positioning errors Download PDF

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CN115563702A
CN115563702A CN202211155462.1A CN202211155462A CN115563702A CN 115563702 A CN115563702 A CN 115563702A CN 202211155462 A CN202211155462 A CN 202211155462A CN 115563702 A CN115563702 A CN 115563702A
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product
coordinate system
mounting
installation
error
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丁海涛
陈雪梅
刘蕾
付建超
赵颖
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Chengdu Aircraft Industrial Group Co Ltd
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Chengdu Aircraft Industrial Group Co Ltd
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    • G06F30/10—Geometric CAD
    • G06F30/15—Vehicle, aircraft or watercraft design
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
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Abstract

The application discloses a method, a device, equipment and a medium for analyzing a product installation positioning error, relates to the technical field of product installation error analysis, and is used for solving the technical problem that the judgment of the product installation error caused by tool positioning in the prior art is inaccurate; based on the tool coordinate system, obtaining a first main mounting track model of the main mounting hole of the product and a first auxiliary mounting track model of the auxiliary mounting hole of the product; based on the first main mounting track model and the first auxiliary mounting track model, obtaining a first general mounting track model of any point on a product under the tool coordinate system; obtaining a second general installation track model of the product under the theoretical coordinate system of the airplane based on the first general installation track model; and analyzing the installation error of the product based on the second general installation track model. So be more convenient for judge the product installation error that causes through the frock location.

Description

Method, device, equipment and medium for analyzing product installation positioning errors
Technical Field
The application relates to the technical field of product installation positioning error analysis, in particular to a method, a device, equipment and a medium for product installation positioning error analysis.
Background
In aircraft assembly, a product is positioned by a tool, mounted on the tool, and then machined, for example, with a common "round hole + oblong hole" combination. The final machining precision of the product is influenced by the installation precision of the tool, and meanwhile, the final machining precision of the product is also influenced by the installation precision of the product on the tool. In engineering practice, at present, a craft worker mainly determines the machining and assembling precision of a tool and a product according to experience, and product errors caused by tool positioning are not accurately judged, so that positioning and installation of the product are inaccurate, and finally, the installation error of the product is large.
Disclosure of Invention
The application mainly aims to provide a method, a device, equipment and a medium for analyzing a product installation positioning error, and aims to solve the technical problem that in the prior art, the product error caused by tool positioning is inaccurately judged.
To achieve the above object, a first aspect of the present application provides a method for analyzing a product installation positioning error, where the method includes:
constructing an airplane theoretical coordinate system and a tooling coordinate system;
based on the tool coordinate system, obtaining a first main mounting track model of the main mounting hole of the product and a first auxiliary mounting track model of the auxiliary mounting hole of the product;
based on the first main mounting track model and the first auxiliary mounting track model, obtaining a first general mounting track model of any point on a product under the tool coordinate system;
obtaining a second general installation track model of the product under the theoretical coordinate system of the airplane based on the first general installation track model;
and analyzing the installation error of the product based on the second general installation track model.
Preferably, the first main mounting trajectory model is obtained by the following relation:
Figure BDA0003857102020000021
wherein r is more than or equal to 0 and less than or equal to e max ，0≤θ≤2π，
Figure BDA0003857102020000022
e max Indicating the maximum positioning error of the product, D 1max Indicates the maximum diameter of the tooling locating hole, D 3max Represents the maximum diameter of the fabrication hole of the product, d 2min Representing the minimum diameter of the tooling positioning pin; x is the number of A2 X-axis coordinate, y, of the main mounting hole of the product in the tooling coordinate system A2 And the y-axis coordinate of the main mounting hole of the product in the tool coordinate system is shown.
Preferably, the first sub-installation trajectory model is obtained by the following relation:
Figure BDA0003857102020000023
Figure BDA0003857102020000024
Figure BDA0003857102020000025
wherein, e' min ≤δ≤e′ max ，
Figure BDA0003857102020000026
e 'represents a fit clearance between the tooling auxiliary positioning hole and the product auxiliary mounting hole, e' min Represents the minimum fit clearance, e 'between the tooling auxiliary positioning hole and the product auxiliary mounting hole' max Indicates the maximum fit clearance between the auxiliary positioning hole of the tool and the auxiliary mounting hole of the product, D 1 Indicating the diameter of the tooling locating hole, D 3 Representing a product processDiameter of the hole, d 2 Indicates the diameter, x, of the tooling dowel B2 The x-axis coordinate and the y-axis coordinate of the auxiliary mounting hole of the product in the tool coordinate system are shown B2 The y-axis coordinate, L, of the auxiliary mounting hole of the product in the tooling coordinate system x0 The distance L from the auxiliary mounting hole of the product to the auxiliary positioning hole of the tool along the x-axis direction y0 The distance from the auxiliary mounting hole of the product to the positioning hole of the tool auxiliary along the x-axis direction is shown, delta x shows the pitch error of the auxiliary mounting hole of the product along the x-axis direction, delta y shows the pitch error of the auxiliary mounting hole of the product along the y-axis direction, and alpha 2 And the rotation angle of the product in the tooling coordinate system during positioning is shown.
Preferably, the first generic mounting trajectory model is obtained by the following relation:
Figure BDA0003857102020000031
Figure BDA0003857102020000032
Figure BDA0003857102020000033
wherein x is C2 X-axis coordinate, y, of any point of the product in the tool coordinate system B2 Y-axis coordinate, x 'of any point of product in tooling coordinate system' c0 Denotes a theoretical mounting locus, y ', of any point on the product on the x-axis' c0 Representing the theoretical mounting path of any point on the product on the y-axis, R 2 Rotation matrix, T, representing the position of the product after installation relative to the tool coordinate system 2 A translation matrix, deltax, representing the position of the product after installation relative to the tooling coordinate system c2 Shows the assembly error of the product on the x axis at any point under the tooling coordinate system, delta y c2 And the assembly error of the product on the y axis at any point in the tooling coordinate system is shown.
Preferably, the second general mounting trajectory model is obtained by the following relation:
Figure BDA0003857102020000034
Figure BDA0003857102020000035
Figure BDA0003857102020000036
wherein x is C3 Representing the x-axis coordinate, y, of the product at any point in the theoretical coordinate system of the aircraft C3 Y-axis coordinate, R, representing any point of the product in the theoretical coordinate system of the aircraft 1 Rotation matrix, T, representing the tooling coordinate system relative to the theoretical coordinate system of the aircraft 1 Representing the translation matrix, alpha, of the tooling coordinate system relative to the theoretical coordinate system of the aircraft 1 And the rotating angle of the tool in the theoretical coordinate system of the airplane during positioning is shown.
Preferably, a second main mounting track model and a second auxiliary mounting track model of the product in the theoretical coordinate system of the airplane are respectively obtained based on the first main mounting track model and the first auxiliary mounting track model;
obtaining a second main mounting trajectory model by the following relation:
Figure BDA0003857102020000037
wherein x is A3 Represents the x-axis coordinate, y, of the main mounting hole of the product in the theoretical coordinate system of the airplane A3 The y-axis coordinate of the main mounting hole of the product in the theoretical coordinate system of the airplane is represented;
obtaining a second sub-installation track model through the following relational expression:
Figure BDA0003857102020000041
wherein x is B3 Represents the x-axis coordinate, y, of the product auxiliary mounting hole under the airplane theoretical coordinate system B3 And the y-axis coordinate of the auxiliary mounting hole of the product in the theoretical coordinate system of the airplane is shown.
Preferably, after the step of analyzing the product installation error based on the second general installation trajectory model, the method further includes:
analyzing the installation error of the product to obtain an error analysis result;
updating the first main mounting track model, the first auxiliary mounting track model and the first general mounting track model based on the error analysis result so as to update the second general mounting track model.
Preferably, before the step of updating the first main mounting trajectory model, the first sub-mounting trajectory model, and the first general mounting trajectory model based on the error analysis result to update the second general mounting trajectory model, the method further includes:
stopping executing the step of updating the first main mounting trajectory model, the first auxiliary mounting trajectory model and the first general mounting trajectory model based on the error analysis result to update the second general mounting trajectory model when the error analysis result is smaller than an error threshold value;
and if the error analysis result is greater than or equal to the error threshold, performing the step of updating the first main mounting trajectory model, the first auxiliary mounting trajectory model, and the first general mounting trajectory model based on the error analysis result to update the second general mounting trajectory model.
Preferably, the obtaining of the error analysis result based on the analysis of the installation error of the product includes:
obtaining an installation error map of any point on the product based on the analysis of the installation error of the product;
and obtaining the error analysis result based on the installation error map.
In a second aspect, the present application provides a product mounting positioning error analysis apparatus, the apparatus comprising:
the construction module is used for constructing an airplane theoretical coordinate system and a tooling coordinate system;
the first obtaining module is used for obtaining a first main mounting track model of the main mounting hole of the product and a first auxiliary mounting track model of the auxiliary mounting hole of the product based on the tool coordinate system;
the second obtaining module is used for obtaining a first universal mounting track model of any point on a product under the tool coordinate system based on the first main mounting track model and the first auxiliary mounting track model;
a third obtaining module, configured to obtain a second general installation track model of the product in the aircraft theoretical coordinate system based on the first general installation track model;
and the analysis module is used for analyzing the installation error of the product based on the second general installation track model.
In a third aspect, the present application provides a computer device, which includes a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the method described in the embodiment.
In a fourth aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, wherein a processor executes the computer program to implement the method described in the embodiments.
Through above-mentioned technical scheme, this application has following beneficial effect at least:
according to the method, the device, the equipment and the medium for analyzing the product installation positioning errors, an airplane theoretical coordinate system and a tooling coordinate system are constructed firstly; based on the tool coordinate system, obtaining a first main mounting track model of the main mounting hole of the product and a first auxiliary mounting track model of the auxiliary mounting hole of the product; based on the first main mounting track model and the first auxiliary mounting track model, obtaining a first general mounting track model of any point on a product under the tool coordinate system; based on the first general installation track model, obtaining a second general installation track model of the product under the airplane theoretical coordinate system; and analyzing the installation error of the product based on the second general installation track model. The method comprises the steps of determining coordinates of two points of a product, which are arranged on a tool, to determine the installation position of the whole product, which is arranged on the tool, only by determining installation tracks of a main installation hole and an auxiliary installation hole of the product, the arbitrary installation position of the whole product under a tool coordinate system can be known, then converting the track of the whole product from the tool coordinate system to an airplane theoretical coordinate system, comparing the installation track of the arbitrary point of the product under the airplane theoretical coordinate system with the theoretical installation track, so that the error condition of the product, which is arranged on the tool, can be quickly, conveniently and accurately known, and corresponding adjustment is carried out according to the error condition.
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FIG. 1 is a schematic diagram of a computer device in a hardware operating environment according to an embodiment of the present application;
FIG. 2 is a schematic flow chart illustrating a method for analyzing positioning errors of product installation according to an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of a product assembly process provided by an embodiment of the present application;
FIG. 4 is a schematic illustration of a product assembly orientation provided by an embodiment of the present application;
FIG. 5 is an enlarged schematic view of a product assembly error provided by an embodiment of the present application;
FIG. 6 is a schematic diagram illustrating a positioning principle of a main mounting hole of a product according to an embodiment of the present disclosure;
fig. 7 is a schematic view of a mounting track of a main mounting hole of a product in a tool coordinate system according to an embodiment of the present disclosure;
FIG. 8 is a schematic diagram illustrating a positioning principle of a product sub-mounting hole according to an embodiment of the present disclosure;
fig. 9 is a schematic view of a mounting track of a product sub-mounting hole in a tooling coordinate system according to an embodiment of the present application;
fig. 10 is a schematic view of an installation track of a pressing hole in a product in a tooling coordinate system according to an embodiment of the present application;
fig. 11 is a schematic diagram of an installation track of a hold-down hole in a product according to an embodiment of the present application in an airplane theoretical coordinate system;
fig. 12 is a schematic view of a mounting track of a main mounting hole of a product in an airplane theoretical coordinate system according to an embodiment of the present application;
fig. 13 is a schematic view of a mounting track of a product sub-mounting hole in an aircraft theoretical coordinate system according to an embodiment of the present application;
FIG. 14 is a schematic flow chart illustrating an application of error analysis according to an embodiment of the present application;
FIG. 15 is a flowchart illustrating a specific implementation of step S20;
fig. 16 is a schematic view of a product installation positioning error analysis apparatus according to an embodiment of the present application.
The implementation, functional features and advantages of the object of the present application will be further explained with reference to the embodiments, and with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In the aircraft assembly, a product is positioned through a tool, the product is installed on the tool, then the product is processed, and the final processing precision of the product is influenced by the installation precision of the tool and the installation precision of the product on the tool. Therefore, the comprehensive assembly precision of the product positioned by the tool is influenced by multiple factors such as the machining precision of the tool, the installation precision, the machining precision of the product and the like. For the assembly feasibility, a small amount of clearance is often left between the pin holes, which however adversely affects the positioning accuracy when the product is installed. In engineering practice, at present, process personnel mainly determine the machining and assembling precision of a tool and a product according to experience, and product errors caused by tool positioning are not accurately judged, so that positioning and installation of the product are inaccurate, and finally, the installation errors of the product are large.
In order to solve the technical problems, the present application provides a method, an apparatus, a device and a medium for analyzing a product installation positioning error, and before introducing a specific technical scheme of the present application, a hardware operating environment related to the scheme of the embodiment of the present application is introduced first.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a computer device in a hardware operating environment according to an embodiment of the present application.
As shown in fig. 1, the computer apparatus may include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a WIreless interface (e.g., a WIreless-FIdelity (WI-FI) interface). The Memory 1005 may be a Random Access Memory (RAM) Memory, or a Non-Volatile Memory (NVM), such as a disk Memory. The memory 1005 may alternatively be a storage device separate from the processor 1001 described previously.
Those skilled in the art will appreciate that the configuration shown in FIG. 1 does not constitute a limitation of a computer device and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a storage medium, may include therein an operating system, a data storage module, a network communication module, a user interface module, and an electronic program.
In the computer device shown in fig. 1, the network interface 1004 is mainly used for data communication with a network server; the user interface 1003 is mainly used for data interaction with a user; the processor 1001 and the memory 1005 of the computer device of the present invention may be disposed in a computer device, and the computer device calls the product installation positioning error analysis apparatus stored in the memory 1005 through the processor 1001 and executes the product installation positioning error analysis method provided in the embodiment of the present invention.
Referring to fig. 2-5, reference numeral 1 in fig. 4 denotes a tool, reference numeral 2 denotes a determined product, reference numeral 3 denotes a positioning pin, reference numeral 4 denotes a handle nut, and a circular hole in the product is a main mounting hole of the product to prevent over-positioning; the long round holes are product auxiliary mounting holes and are used for controlling the rotation of parts in the axis direction, and the rest holes are compression holes and play a role in assisting in supporting and positioning, so that the uniform distribution of rigidity and stress in the product mounting process is ensured; a hardware environment based on the foregoing embodiments; the embodiment of the application provides a method for analyzing a product installation positioning error, which comprises the following steps:
s10: and constructing an airplane theoretical coordinate system and a tooling coordinate system.
S11: and obtaining a first main mounting track model of the main mounting hole of the product and a first auxiliary mounting track model of the auxiliary mounting hole of the product based on the tool coordinate system.
The first main mounting trajectory model is obtained by the following relation, as shown in fig. 6-7:
Figure BDA0003857102020000091
wherein r is more than or equal to 0 and less than or equal to e max ，0≤θ≤2π，
Figure BDA0003857102020000092
e max Indicating the maximum positioning error of the product, D 1max Indicating the maximum diameter of the tooling locating hole, D 3max Denotes the maximum diameter of the product tooling hole (the product tooling hole may be referred to herein as the product main mounting hole), d 2min Indicating workerMinimum diameter of the locating pin; x is the number of A2 The x-axis coordinate, y, of the main mounting hole of the product in the tool coordinate system A2 And the y-axis coordinate of the main mounting hole of the product in the tool coordinate system is shown.
Preferably, the first sub-mounting track model is obtained by the following relation, as shown in fig. 8 to 9:
Figure BDA0003857102020000093
Figure BDA0003857102020000094
Figure BDA0003857102020000095
wherein, e' min ≤δ≤e′ max ，
Figure BDA0003857102020000096
e 'represents a fit clearance between the tool auxiliary positioning hole and the product auxiliary mounting hole, e' min Represents the minimum fit clearance, e 'between the tooling auxiliary positioning hole and the product auxiliary mounting hole' max The maximum fit clearance between the auxiliary locating hole of the tool and the auxiliary mounting hole of the product is shown, D 1 Indicating the diameter of the tooling locating hole, D 3 Indicates the diameter of the product tooling hole (the product tooling hole can be referred to as a product sub-mounting hole here), d 2 Diameter, x, of tooling dowel B2 The x-axis coordinate and the y-axis coordinate of the auxiliary mounting hole of the product in the tooling coordinate system B2 The y-axis coordinate, L, of the auxiliary mounting hole of the product in the tooling coordinate system x0 Showing the distance L between the auxiliary mounting hole of the product and the positioning hole of the tool pair along the x-axis direction y0 The distance between the product auxiliary mounting hole and the positioning hole of the tool auxiliary along the x-axis direction is shown, the delta x shows the hole pitch error of the product auxiliary mounting hole along the x-axis direction, the delta y shows the hole pitch error of the product auxiliary mounting hole along the y-axis direction, and alpha 2 Indicating product locationAnd the rotation angle is in the tool coordinate system.
S12: and obtaining a first general installation track model of any point on the product under the tool coordinate system based on the first main installation track model and the first auxiliary installation track model.
The first generic mounting track model is obtained by the following relationship, as shown in fig. 10 (taking a press hole on a product as an example):
Figure BDA0003857102020000101
Figure BDA0003857102020000102
Figure BDA0003857102020000103
wherein x is C2 X-axis coordinate, y, of any point of the product in the tool coordinate system B2 Y-axis coordinate, x 'of product at any point in tooling coordinate system' c0 Denotes a theoretical mounting locus, y ', of any point on the product on the x-axis' c0 Representing the theoretical mounting path of any point on the product on the y-axis, R 2 Rotation matrix, T, representing the position of the product after installation relative to the tool coordinate system 2 A translation matrix, deltax, representing the position of the product after installation relative to the tooling coordinate system c2 Shows the assembly error of the product on the x axis at any point under the tooling coordinate system, delta y c2 And the assembly error of the product on the y axis at any point in the tooling coordinate system is shown.
S13: based on the first general installation trajectory model, as shown in fig. 11 (taking a pressing hole on a product as an example), a second general installation trajectory model of the product in the theoretical coordinate system of the airplane is obtained.
Obtaining a second general mounting trajectory model by the following relation:
Figure BDA0003857102020000104
Figure BDA0003857102020000105
Figure BDA0003857102020000106
wherein x is C3 Representing the x-axis coordinate, y, of the product at any point in the theoretical coordinate system of the aircraft C3 Y-axis coordinate, R, representing any point of the product in the theoretical coordinate system of the aircraft 1 A rotation matrix T representing the coordinate system of the tool relative to the theoretical coordinate system of the aircraft 1 Representing the translation matrix, alpha, of the tooling coordinate system relative to the theoretical coordinate system of the aircraft 1 And the rotating angle of the tool in the theoretical coordinate system of the airplane during positioning is shown.
S14: and analyzing the installation error of the product based on the second general installation track model.
In the application, the tool is firstly installed under an airplane theoretical coordinate system, when a product (airplane part) is assembled, the tool is used as a reference, namely the tool coordinate system is used as a reference, positioning and assembling of the product are realized, when the product is installed on the tool, a main product installation hole on the product corresponds to a main tool positioning hole on the tool, an auxiliary product installation hole on the product corresponds to an auxiliary tool positioning hole on the tool, the main product installation hole and the main tool positioning hole are circular holes, the auxiliary product installation hole and the auxiliary tool positioning hole are long circular holes, when any one point track on the product is researched, a pressing hole of the product can be selected as a special point to be researched, and the coordinates of the upper circular hole, the long circular holes and the pressing hole all refer to the coordinates of the center point. The method comprises the steps of determining the coordinates of two points of a product, which are arranged on a tool, to determine the installation position of the whole product, which is arranged on the tool, only by determining the installation tracks of a main installation hole and an auxiliary installation hole of the product, so that any installation position of the whole product under a tool coordinate system can be known, then the track of the whole product is converted into an airplane theoretical coordinate system from the tool coordinate system, the error condition of the product, which is arranged on the tool, can be quickly, conveniently and accurately known according to the comparison between the installation track of any point of the product under the airplane theoretical coordinate system and the theoretical installation track, and corresponding adjustment is carried out according to the error condition.
In some embodiments, based on the first main mounting track model and the first auxiliary mounting track model, respectively obtaining a second main mounting track model and a second auxiliary mounting track model of the product in the airplane theoretical coordinate system;
a second main mounting trajectory model is obtained as shown in fig. 12 by the following relational expression:
Figure BDA0003857102020000111
wherein x is A3 Represents the x-axis coordinate, y, of the main mounting hole of the product in the theoretical coordinate system of the airplane A3 The y-axis coordinate of the main mounting hole of the product in the theoretical coordinate system of the airplane is represented;
a second sub-mounting-locus model is obtained as shown in fig. 13 by the following relational expression:
Figure BDA0003857102020000121
wherein x is B3 Represents the x-axis coordinate, y, of the product in the auxiliary mounting hole of the product under the theoretical coordinate system of the airplane B3 And the y-axis coordinate of the auxiliary mounting hole of the product in the theoretical coordinate system of the airplane is shown.
In this embodiment, the main mounting hole and the auxiliary mounting hole of the product are studied as special points, the main mounting hole and the auxiliary mounting hole of the product in the tooling coordinate system are converted into the theoretical coordinate system of the airplane, and then the track of the main mounting hole and the auxiliary mounting hole of the product in the theoretical coordinate system of the airplane is compared with the track of the main mounting hole and the auxiliary mounting hole of the product in the theoretical condition of the airplane, so that the installation error condition of the product can be judged more quickly and accurately.
In addition, the x-axis coordinate and the y-axis coordinate referred to in fig. 1 to 13 are each in mm.
In some embodiments, as shown in fig. 14, after the step of analyzing the product installation error based on the second generic installation trajectory model, the method further includes:
s20: and analyzing the installation error of the product to obtain an error analysis result.
The purpose of analyzing the installation error of the product is to obtain an error analysis result, and then, according to the obtained error analysis result, adjustment is made on installation of the product, as shown in fig. 15, the error analysis result may be obtained specifically by the following method:
s201: and obtaining an installation error map of any point on the product based on the analysis of the installation error of the product.
The installation error of the product is analyzed, and the installation error graph is obtained after the installation error of the product is processed in a conventional mode.
S202: and obtaining the error analysis result based on the installation error map.
The error analysis result can be obtained more visually and clearly by installing the error map, so that the efficiency of the error analysis result can be obtained more.
S21: updating the first primary mounting trajectory model, the first secondary mounting trajectory model, and the first generic mounting trajectory model based on the error analysis result to update the second generic mounting trajectory model.
In the embodiment, based on the difference between the actual installation position of the whole product in the aircraft coordinate system and the theoretical installation position of the product, an error analysis result can be known, and according to the error analysis result, the installation positions of the product main installation hole and the product auxiliary installation hole in the tooling coordinate system are adjusted again, so that the purpose of updating the first main installation track model, the first auxiliary installation track model and the first general installation track model is achieved, the updated position of the whole product is converted into the aircraft theoretical coordinate system, the actual installation position of the product in the aircraft theoretical coordinate system is compared with the theoretical installation position of the tooling again to obtain an error analysis result, the installation positions of the product main installation hole and the product auxiliary installation hole in the tooling coordinate system can be adjusted again according to the error analysis result, and the adjustment of the product main installation hole and the product auxiliary installation hole in the aircraft theoretical coordinate system can be stopped until the actual installation error of the product in the aircraft theoretical coordinate system is reduced to a reasonable range, and the final installation error of the product can be effectively reduced.
In some embodiments, before the step of updating the first main mounting trajectory model, the first sub mounting trajectory model and the first general mounting trajectory model to update the second general mounting trajectory model based on the error analysis result, the method further comprises:
stopping executing the step of updating the first primary mounting trajectory model, the first secondary mounting trajectory model, and the first generic mounting trajectory model based on the error analysis result to update the second generic mounting trajectory model when the error analysis result is less than an error threshold;
and if the error analysis result is greater than or equal to the error threshold, performing the step of updating the first primary and secondary mounting trajectory models and the first generic mounting trajectory model based on the error analysis result to update the second generic mounting trajectory model.
In the embodiment, the error threshold value can be given according to actual working experience or requirements, and when the error analysis result is smaller than the error threshold value, the installation accuracy of the whole product based on the airplane theoretical coordinate system can meet the requirements, so that the installation positions of the main installation hole and the auxiliary installation hole of the product do not need to be adjusted; when the error analysis result is greater than or equal to the error threshold, the installation accuracy of the whole product based on the airplane theoretical coordinate system cannot meet the corresponding requirement, and therefore the installation positions of the main installation hole and the auxiliary installation hole of the product in the tooling coordinate system need to be adjusted back to achieve the purpose of readjusting the installation position of the whole product until the error of the product position after being reinstalled is within the error threshold range.
In another embodiment, as shown in fig. 16, the present application provides a product mounting positioning error analyzing apparatus, including:
the construction module is used for constructing an airplane theoretical coordinate system and a tooling coordinate system;
the first obtaining module is used for obtaining a first main mounting track model of the main mounting hole of the product and a first auxiliary mounting track model of the auxiliary mounting hole of the product based on the tool coordinate system;
the second obtaining module is used for obtaining a first general installation track model of any point on a product under the tool coordinate system based on the first main installation track model and the first auxiliary installation track model;
a third obtaining module, configured to obtain a second general installation track model of the product in the aircraft theoretical coordinate system based on the first general installation track model;
and the analysis module is used for analyzing the installation error of the product based on the second general installation track model.
It should be noted that, in this embodiment, each module in the product installation positioning error analysis apparatus corresponds to each step in the product installation positioning error analysis method in the foregoing embodiment one to one, and therefore, the specific implementation manner and the achieved technical effect of this embodiment may refer to the implementation manner of the product installation positioning error analysis method, which is not described herein again.
Furthermore, in an embodiment, the present application also provides a computer device comprising a processor, a memory and a computer program stored in the memory, which when executed by the processor implements the method in the preceding embodiment.
Furthermore, in an embodiment, the present application further provides a computer storage medium having a computer program stored thereon, where the computer program is executed by a processor to implement the method in the foregoing embodiment.
In some embodiments, the computer-readable storage medium may be memory such as FRAM, ROM, PROM, EPROM, EEPROM, flash, magnetic surface memory, optical disk, or CD-ROM; or may be various devices including one or any combination of the above memories. The computer may be a variety of computing devices including intelligent terminals and servers.
In some embodiments, executable instructions may be written in any form of programming language (including compiled or interpreted languages), in the form of programs, software modules, scripts or code, and may be deployed in any form, including as a stand-alone program or as a module, component, subroutine, or other unit suitable for use in a computing environment.
By way of example, executable instructions may correspond, but do not necessarily have to correspond, to files in a file system, and may be stored in a portion of a file that holds other programs or data, such as in one or more scripts in a hypertext Markup Language (HTML) document, in a single file dedicated to the program in question, or in multiple coordinated files (e.g., files that store one or more modules, sub-programs, or portions of code).
By way of example, executable instructions may be deployed to be executed on one computing device or on multiple computing devices at one site or distributed across multiple sites and interconnected by a communication network.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of other like elements in a process, method, article, or system comprising the element.
The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.
Through the description of the foregoing embodiments, it is clear to those skilled in the art that the method of the foregoing embodiments may be implemented by software plus a necessary general hardware platform, and certainly may also be implemented by hardware, but in many cases, the former is a better implementation. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (e.g., a rom/ram, a magnetic disk, an optical disk) and includes instructions for enabling a multimedia terminal (e.g., a mobile phone, a computer, a television receiver, or a network device) to execute the method according to the embodiments of the present application.
The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all the equivalent structures or equivalent processes that can be directly or indirectly applied to other related technical fields by using the contents of the specification and the drawings of the present application are also included in the scope of the present application.

Claims (12)

1. A method for analyzing product installation positioning errors, the method comprising:
constructing an airplane theoretical coordinate system and a tooling coordinate system;
based on the tool coordinate system, obtaining a first main mounting track model of the main mounting hole of the product and a first auxiliary mounting track model of the auxiliary mounting hole of the product;
based on the first main mounting track model and the first auxiliary mounting track model, obtaining a first general mounting track model of any point on a product under the tool coordinate system;
based on the first general installation track model, obtaining a second general installation track model of the product under the airplane theoretical coordinate system;
and analyzing the installation error of the product based on the second general installation track model.
2. The product mounting positioning error analysis method of claim 1, wherein the first main mounting trajectory model is obtained by the following relation:
Figure FDA0003857102010000011
wherein r is more than or equal to 0 and less than or equal to e max ，0≤θ≤2π，
Figure FDA0003857102010000012
e max Indicating the maximum positioning error of the product, D 1max Indicates the maximum diameter of the tooling locating hole, D 3max Denotes the maximum diameter of the product process hole, d 2min Indicating the minimum diameter of the tooling locating pin; x is the number of A2 X-axis coordinate, y, of the main mounting hole of the product in the tooling coordinate system A2 And the y-axis coordinate of the main mounting hole of the product in the tool coordinate system is shown.
3. The product mounting positioning error analysis method according to claim 2, wherein the first sub-mounting trajectory model is obtained by a relation:
Figure FDA0003857102010000013
Figure FDA0003857102010000021
Figure FDA0003857102010000022
wherein, e' min ≤δ≤e′ max ，
Figure FDA0003857102010000023
e 'represents a fit clearance between the tooling auxiliary positioning hole and the product auxiliary mounting hole, e' min Represents the minimum fit clearance, e 'between the tool auxiliary positioning hole and the product auxiliary mounting hole' max Indicates the maximum fit clearance between the auxiliary positioning hole of the tool and the auxiliary mounting hole of the product, D 1 Indicating the diameter of the tooling locating hole, D 3 Denotes the diameter of the product process hole, d 2 Indicates the diameter, x, of the tooling dowel B2 The x-axis coordinate and the y-axis coordinate of the auxiliary mounting hole of the product in the tooling coordinate system B2 The y-axis coordinate, L, of the auxiliary mounting hole of the product in the tooling coordinate system x0 Showing the distance L between the auxiliary mounting hole of the product and the positioning hole of the tool pair along the x-axis direction y0 The distance between the product auxiliary mounting hole and the positioning hole of the tool auxiliary along the x-axis direction is shown, the delta x shows the hole pitch error of the product auxiliary mounting hole along the x-axis direction, the delta y shows the hole pitch error of the product auxiliary mounting hole along the y-axis direction, and alpha 2 And the rotation angle of the product in the tool coordinate system during positioning is shown.
4. The product mounting positioning error analysis method of claim 3,
obtaining the first generic installation trajectory model by the following relation:
Figure FDA0003857102010000024
Figure FDA0003857102010000025
Figure FDA0003857102010000026
wherein x is C2 X-axis coordinate, y, of any point of the product in the tool coordinate system B2 Y-axis coordinate, x 'of any point of product in tooling coordinate system' c0 Denotes a theoretical mounting locus, y ', of any point on the product on the x-axis' c0 Representing the theoretical mounting path of any point on the product on the y-axis, R 2 Rotation matrix, T, representing the position of the product after installation relative to the tool coordinate system 2 A translation matrix, deltax, representing the position of the product after installation relative to the tooling coordinate system c2 Shows the assembly error of any point of the product on the x axis under the tooling coordinate system, delta y c2 And the assembly error of the product on the y axis at any point in the tooling coordinate system is shown.
5. The product mounting positioning error analysis method of claim 4, wherein the second general mounting trajectory model is obtained by the following relation:
Figure FDA0003857102010000031
Figure FDA0003857102010000032
Figure FDA0003857102010000033
wherein x is C3 X-axis coordinate, y, representing any point of the product in the theoretical coordinate system of the aircraft C3 Representing the y-axis coordinate, R, of any point of the product in the theoretical coordinate system of the aircraft 1 A rotation matrix T representing the coordinate system of the tool relative to the theoretical coordinate system of the aircraft 1 A translation matrix, alpha, representing the tooling coordinate system relative to the theoretical coordinate system of the aircraft 1 And the rotating angle of the tool in the theoretical coordinate system of the airplane during positioning is shown.
6. The product installation positioning error analysis method of claim 5, wherein a second main installation track model and a second auxiliary installation track model of the product in the theoretical coordinate system of the airplane are respectively obtained based on the first main installation track model and the first auxiliary installation track model;
obtaining a second main mounting trajectory model by the following relation:
Figure FDA0003857102010000034
wherein x is A3 Represents the x-axis coordinate, y, of the main mounting hole of the product in the theoretical coordinate system of the airplane A3 The y-axis coordinate of the main mounting hole of the product in the airplane theoretical coordinate system is represented;
obtaining a second sub-installation track model through the following relational expression:
Figure FDA0003857102010000035
wherein x is B3 Represents the x-axis coordinate, y, of the product in the auxiliary mounting hole of the product under the theoretical coordinate system of the airplane B3 And the y-axis coordinate of the auxiliary mounting hole of the product in the airplane theoretical coordinate system is represented.
7. The method for analyzing the product installation positioning error of claim 1, wherein after the step of analyzing the product installation error based on the second generic installation trajectory model, the method further comprises:
analyzing the installation error of the product to obtain an error analysis result;
updating the first main mounting track model, the first auxiliary mounting track model and the first general mounting track model based on the error analysis result so as to update the second general mounting track model.
8. The product mounting positioning error analysis method of claim 7, wherein before the step of updating the first primary mounting trajectory model, the first secondary mounting trajectory model, and the first generic mounting trajectory model to update the second generic mounting trajectory model based on the error analysis result, further comprising:
stopping executing the step of updating the first primary mounting trajectory model, the first secondary mounting trajectory model, and the first generic mounting trajectory model based on the error analysis result to update the second generic mounting trajectory model when the error analysis result is less than an error threshold;
and if the error analysis result is greater than or equal to the error threshold, performing the step of updating the first primary and secondary mounting trajectory models and the first generic mounting trajectory model based on the error analysis result to update the second generic mounting trajectory model.
9. The product mounting positioning error analysis method of claim 7, wherein obtaining an error analysis result based on analyzing a mounting error of a product comprises:
obtaining a mounting error diagram of any point on the product based on the analysis of the mounting error of the product;
and obtaining the error analysis result based on the installation error map.
10. A product mounting positioning error analysis apparatus, the apparatus comprising:
the building module is used for building an airplane theoretical coordinate system and a tooling coordinate system;
the first obtaining module is used for obtaining a first main mounting track model of the main mounting hole of the product and a first auxiliary mounting track model of the auxiliary mounting hole of the product based on the tool coordinate system;
the second obtaining module is used for obtaining a first universal mounting track model of any point on a product under the tool coordinate system based on the first main mounting track model and the first auxiliary mounting track model;
a third obtaining module, configured to obtain a second general installation trajectory model of the product in the theoretical coordinate system of the aircraft based on the first general installation trajectory model;
and the analysis module is used for analyzing the installation error of the product based on the second general installation track model.
11. A computer arrangement, characterized in that the computer arrangement comprises a memory in which a computer program is stored and a processor which executes the computer program for implementing the method as claimed in any one of claims 1-9.
12. A computer-readable storage medium, having a computer program stored thereon, which, when executed by a processor, performs the method of any one of claims 1-9.
CN202211155462.1A 2022-09-21 2022-09-21 Method, device, equipment and medium for analyzing product installation positioning errors Pending CN115563702A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211155462.1A CN115563702A (en) 2022-09-21 2022-09-21 Method, device, equipment and medium for analyzing product installation positioning errors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211155462.1A CN115563702A (en) 2022-09-21 2022-09-21 Method, device, equipment and medium for analyzing product installation positioning errors

Publications (1)

Publication Number Publication Date
CN115563702A true CN115563702A (en) 2023-01-03

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Country Link
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