CN114357628A - Three-dimensional visual consumption type distribution method for MBD aircraft fastener in assembly process design - Google Patents
Three-dimensional visual consumption type distribution method for MBD aircraft fastener in assembly process design Download PDFInfo
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Abstract
A three-dimensional visual consumption type distribution method for MBD aircraft fasteners in assembly process design comprises the steps of firstly, forming an EBOM (engineering data object model), dividing stations and stations in an assembly process planning flow, and giving names and numbers of the stations and the stations. Secondly, distributing the digital-analog modules in the EBOM structure to stations according to the modules, then distributing the modules in the stations to form MDM modules in the stations, carrying out first consumption type distribution on fastener models in the MDM modules in the stations, and adding distribution results into a process planning system. Thirdly, compiling a manufacturing file under the station, wherein the manufacturing file comprises the step number and the step name. And finally, performing second consumption type distribution on the first consumption type distribution result, and associating the distribution result with the manufacturing file process step to generate a manufacturing file. The process planning result is the three-dimensional fastener model of each station, so that the assembly personnel can conveniently check the three-dimensional digital model for visual assembly; the process planning process is distributed according to the spatial position consumption type, and the accuracy is high.
Description
Technical Field
The invention belongs to the technical field of process planning in an airplane assembly process, and relates to a three-dimensional visual consumption type distribution method for an MBD airplane fastener in an assembly process design.
Background
Aircraft are constructed from millions of fasteners. One of the main operational aspects in the assembly of aircraft is the installation of fasteners. The method comprises the steps that an engineering digital-to-analog is required to be converted into a manufacturing file for installing fasteners, and an assembling operator installs the fasteners one by one according to the manufacturing file item by item, wherein the engineering digital-to-analog mainly refers to a three-dimensional digital-to-analog, the three-dimensional digital-to-analog takes a working packet as a unit, each working packet comprises a plurality of modules, and a fastener assembling model is usually included in each module; the form of the manufactured document varies but includes the fastener brand, number, mounting location, and the sub-document. The process planning process is that the three-dimensional digital model is converted into a manufacturing file, and the manufacturing file comprises fastener marks, the number, the installation positions and subordinate files. The process planning method determines to a great extent whether the assembly process of the fastener can be smoothly carried out.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a consumption type distribution method for the three-dimensional process of MBD (Model Based Definition) aircraft fastener assembly, which carries out process planning on fasteners in an engineering three-dimensional digital Model by the consumption type distribution method, converts the three-dimensional engineering digital Model into a manufacturing Model, and thus guides the compilation of manufacturing files. The consumption type distribution method comprises the following steps: the distribution mode of unique assembly and use position designation is carried out on elements in the three-dimensional model, the accuracy and the uniqueness in the million-level fastener distribution process are ensured, the process design process is accurate and free of errors, and the efficiency is high.
In order to achieve the purpose, the invention adopts the technical scheme that:
a three-dimensional visual consumable allocation method for MBD aircraft fasteners in an assembly process design comprises the following steps:
(1) the method comprises the steps of forming an EBOM by utilizing engineering data, specifically packaging the engineering data according to modules by a design department, wherein the content of each module comprises an xml file and a three-dimensional digital analog, reading the xml file to obtain a two-dimensional EBOM structure, and reading the content of part numbers and the like in the xml to obtain the three-dimensional digital analog, namely considering that the two-dimensional EBOM is associated with the three-dimensional digital analog.
(2) And dividing stations and stations in the assembly process planning flow, and giving names and numbers of the stations and the stations.
(3) Firstly, distributing a digital model in an EBOM structure to a station according to a module, and then distributing the module in the station to a station to form an MDM module in the station, wherein the MDM module refers to: the MDM module comprises a relation chart file, the relation chart file comprises the station position, the station position number and the number of the three-dimensional model in the module, and the three-dimensional digital model with the number in the relation chart file can be opened by opening the relation chart file.
(4) And carrying out first consumption type distribution on the fastener model in the station MDM module, and adding a distribution result into the process planning system. The consumption type distribution method comprises the following steps: firstly, identifying a fastener model in an MDM module; secondly, performing consumption type distribution on the fastener model, namely moving the fasteners in a certain number of fastener models into a newly established file A (three-dimensional model), wherein the selected fasteners are not affiliated to the original MDM module fastener model any more, but affiliated to a new file A; thirdly, identifying the brand of the fastener for the fastener in the new file A; fourth, a new xml file B is created that includes a fastener two-dimensional relationship chart therein. And finally, storing the new file A into the process planning system to serve as an auxiliary structure of the MDM module. The above described consumable allocation method is repeated for other MDM modules.
(5) And compiling a manufacturing file under the station, wherein the manufacturing file comprises the step number and the step name and does not comprise fastener information. Manufacturing documentation refers to process documentation used to guide workers at the assembly site in the form of assembly outlines, assembly procedures, and manufacturing records, among other forms.
(6) And performing second consumption type distribution on the first consumption type distribution result, specifically the new file A (three-dimensional model). The consumption type distribution method comprises the following steps: firstly, identifying a new file A (three-dimensional model) of a first-time consumption type distribution result; secondly, performing consumption type distribution on the fastener, namely changing the original fastener which is subordinate to the new file A (three-dimensional model) into a fastener which is subordinate to a form step number (the form step number is only a number and is irrelevant to the content corresponding to the step number), wherein after the consumption type distribution, the relationship that the fastener is subordinate to the new file A (three-dimensional model) disappears; and finally, forming a new fastener two-dimensional relation chart and a new fastener three-dimensional model after consumption type distribution.
(7) The secondary consumption type distribution result is associated with the manufacturing file process step, namely the process step is opened, and the fasteners contained in the process step can be checked.
(8) And generating a manufacturing file as a basis for installing the fastener by an operator.
The invention has the beneficial effects that:
the fastener assembly process planning part in the aircraft assembly process planning is changed from a two-dimensional EBOM chart to a method of directly utilizing a three-dimensional fastener digifax, so that the method is more intuitive compared with a two-dimensional form, the process planning result is a three-dimensional fastener model of each station, and the method is favorable for assembly personnel to check the three-dimensional digifax for visual assembly. The process planning process is distributed according to spatial position consumption, which is beneficial to counting a large number of fasteners, avoids repetition and omission and improves the accuracy; the method can be applied to fastener process planning in three-dimensional process planning in airplane assembly.
Drawings
FIG. 1 is a three-dimensional process planning flow diagram for fastener assembly;
in the figure, 1 represents that an EBOM structure is built by using an xml file in an engineering data packet, and the EBOM structure is associated with a three-dimensional digital analog. And 2, establishing stations and stations in the process planning flow. And 3, decomposing the engineering digital analogy of the EBOM structure to a station and a station according to the modules to form an MDM module, wherein the MDM module is associated with the three-dimensional digital analogy, namely the MDM module comprises a two-dimensional relation chart and a three-dimensional fastener model. The fastener models in the 4-station MDM module are first consumable distributed to form a new document a (three-dimensional model). The detailed contents are shown in the invention and creation contents (4). And 5, writing a manufacturing file under a station. The manufacturing document includes a process step number, a process step name, and does not include fastener information. And 6 represents the manufacturing document process step number for the second consumable dispensing of the set of fasteners at the station, to dispense the fasteners to the station. The detailed contents are shown in the invention and creation (6). And 7, the result of the secondary consumption type distribution is associated with the manufacturing document process step. And 8, generating a manufacturing file.
Detailed Description
The present invention is further illustrated by the following specific examples.
The invention designs a Model Based Definition (MBD) aircraft fastener assembly three-dimensional process consumption type distribution method, which carries out process planning on fasteners in an engineering three-dimensional digital Model by using the consumption type distribution method and converts the engineering three-dimensional digital Model into a manufacturing Model so as to guide the compilation of a manufacturing file. The consumption type distribution method comprises the following steps: the distribution mode of unique assembly and use position designation is carried out on elements in the engineering model, the accuracy and the uniqueness in the million-level fastener distribution process are ensured, the process design process is accurate and free of errors, and the efficiency is high. The specific embodiment is as follows:
the C919 airplane APU door working bag carries out three-dimensional visual consumption type distribution process planning in fastener assembly process design in the PDM platform.
(1) And reading the xml file in the file package by using 13 files packed according to modules issued by the engineering department to form an EBOM structure. By reading the xml file, the EBOM is associated with a three-dimensional digital-to-analog.
(2) The APU door establishes a total assembly station (ST1) and a riveting station (ST2), the total assembly station comprises a left door assembly station (P1) and a right door assembly station (P2), and the riveting station (ST2) comprises a measuring station (P3). The brackets are the station position and station position numbers.
(3) And planning the flow according to an assembly process, and decomposing 13 modules in the EBOM into an APU door general assembly station, a left door and right door assembly station, a rivet supplementing station and a measuring station to form an MDM module file, wherein the MDM module file is distributed to a left door assembly station P1 of a general assembly station ST1, for example, the module 1. Module 1 forms the MDM file MDM-ST 1-P1-module 1-1 at station P1.
(4) At station P1, a first fastener-consuming assignment of 12 fasteners (6F 1 fasteners, 6F 2 fasteners) from the MDM file MDM-ST 1-P1-Module 1-1 is made to form a three-dimensional model file R-MDM file MDM-ST 1-P1-Module 1-1 and an xml file B1, which are saved into the process planning system as an adjunct to the MDM module.
(5) An assembly outline S100-5321-010-containing assembly outline is created, wherein the assembly outline comprises process step numbers 010, 020, 030 and the like, process step name part verification, hole making, fastener installation and the like, and fastener information in the fastener installation process step 030 is empty.
(6) The MDM model attachment structure (three dimensional model file R-MDM file MDM-ST 1-P1-module 1-1) is removed, a second consumable assignment of fasteners in the station is made, and F1 fasteners (6) in the set of station fasteners are assigned to form job step number 030.
(7) Associating 6F 1 fasteners associated with form work step number 030 with a 030 work step is accomplished by writing program code.
(8) An assembly outline was created as the basis for the operator to install the fasteners, at which point 6F 1 fasteners had been present in the 030 process step.
The above-mentioned embodiments only express the embodiments of the present invention, but not should be understood as the limitation of the scope of the invention patent, it should be noted that, for those skilled in the art, many variations and modifications can be made without departing from the concept of the present invention, and these all fall into the protection scope of the present invention.
Claims (2)
1. A three-dimensional visual consumable allocation method for MBD aircraft fasteners in an assembly process design is characterized by comprising the following steps:
(1) forming an EBOM by using engineering data, packaging the engineering data according to modules for a design department, wherein the content of each module comprises an xml file and a three-dimensional digital analog, reading the xml file to obtain a two-dimensional EBOM structure, and associating the two-dimensional EBOM with the three-dimensional digital analog;
(2) dividing stations and stations in the assembly process planning flow, and giving names and numbers of the stations and the stations;
(3) firstly, distributing a digital model in an EBOM structure to a station according to a module, then distributing the module in the station to a station to form an MDM module in the station, namely, each engineering module corresponds to one MDM module, wherein the MDM module comprises a relation chart file, the relation chart file comprises the station, a station number and a three-dimensional model number included in the module, and the three-dimensional digital model including the number is opened by opening the relation chart file;
(4) carrying out first consumption type distribution on a fastener model in a station MDM module, and adding a distribution result into a process planning system; the consumption type distribution method comprises the following steps: firstly, identifying a fastener model in an MDM module; secondly, performing consumption type distribution on the fastener model, and moving the fasteners in a certain number of fastener models into a newly established file A, wherein the file A is a three-dimensional model, and the selected fasteners are not affiliated to the original MDM module fastener model any more, but are affiliated to a new file A; thirdly, identifying the brand of the fastener for the fastener in the new file A; fourthly, forming a new xml file B which comprises a fastener two-dimensional relation chart; finally, storing the new file A into a process planning system as an auxiliary structure of the MDM module; repeating the above consumption-based allocation method for other MDM modules;
(5) compiling a manufacturing file under a station, wherein the manufacturing file comprises a step number and a step name and does not comprise fastener information;
(6) performing second consumption type distribution on the first consumption type distribution result, specifically the new file A; the consumption type distribution method comprises the following steps: firstly, identifying a new file A of a first consumption type distribution result; secondly, performing consumption type distribution on the new file A, namely changing the original fastener which is subordinate to the new file A into a fastener which is subordinate to the form step number, wherein after the consumption type distribution, the relationship that the fastener is subordinate to the new file A disappears; finally, forming a new fastener two-dimensional relation chart and a new fastener three-dimensional model after consumption type distribution; the form step number is only one number and is irrelevant to the content corresponding to the step number;
(7) associating the secondary consumption type distribution result with the manufacturing file process step, namely opening the process step and checking the fasteners contained in the process step;
(8) and generating a manufacturing file as a basis for installing the fastener by an operator.
2. The method of claim 1, wherein the manufacturing file is a process file used to guide workers in the assembly field to install the fastener, and the manufacturing file is in the form of an assembly outline, an assembly process rule, a manufacturing record or other forms.
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