CN107357968B - Method for manufacturing digital final assembly cable model of satellite cabin section - Google Patents
Method for manufacturing digital final assembly cable model of satellite cabin section Download PDFInfo
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Abstract
The invention discloses a method for manufacturing a digital final assembly cable model of a satellite cabin section, which comprises the following steps: (1) establishing a satellite cabin product structure tree and a corresponding three-dimensional digital cable model thereof; (2) simplifying and extracting a product structure tree related to assembly and a digital assembly view thereof from the three-dimensional digital cable model; (3) giving final assembly information to the cable end electric connector to be installed in the view; (4) extracting product structure information and final assembly information, summarizing to form a final assembly model description file, (5) sending the final assembly model description file and the digital final assembly view to a final assembly field three-dimensional process system, increasing auxiliary tools and process information required during assembly, and generating a digital final assembly cable model and a matching specification sheet for guiding the actual assembly of the cable. The invention is digitalized in the whole process, solves the problems of development and quick installation of digitalized cables and greatly improves the assembly work efficiency.
Description
Technical Field
The invention relates to a method for manufacturing a digital assembly cable model of a satellite cabin section, which is used for guiding the actual assembly of a cable and belongs to the technical field of satellite cable development.
Background
According to the input traditional method for installing the satellite cable, the general trend of the cable is drawn in a plurality of isometric diagrams of two-dimensional satellites, the cable is drawn according to different line types (solid lines, dotted lines and thicknesses) of a power cable, a signal cable and an initiating explosive device cable, and a plurality of cables cannot be distinguished when the cables run together. And attaching the used equipment support in the form of an attached two-dimensional drawing. And the partial view is used to mark the manner of partial installation. The information used for the final assembly is led out in the mode of an outgoing line and a detailed table. In the traditional two-dimensional template sampling production, redesign is carried out in a factory according to a wood mold, and a plurality of bundles with the same or similar trend are bound together for delivery, so that the star is conveniently assembled at a door of an assembly part. The marks are manufactured by laying wood moulds in the actual cables and are used for laying the cables. The mode depends on too much personnel experience and wood models, the design cannot be well reflected, and the randomness is high. In the whole satellite assembly stage, cable network assembly is lack of support of visual and effective assembly process means, assembly personnel need to carry out three-dimensional reconstruction on the cable network in the brain according to a two-dimensional drawing and a large number of marks made on the cable network, and the assembly process is assumed. The assembly efficiency is low, the assembly quality problem is easy to cause, and the development time of a model main line is long. Therefore, a digital assembly cable model is needed to guide the cable assembly work.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the method overcomes the defects of the prior art, provides a method for manufacturing a digital final assembly cable model of a satellite cabin section, and solves the problems of digital cable development and quick installation.
The technical scheme of the invention is as follows: a method for manufacturing a digital final assembly cable model of a satellite cabin section comprises the following steps:
(1) designing a cable network cross-cabin identification according to the layout of equipment and supporting pieces thereof in the satellite cabin, the appearance diagram of the equipment and the supporting pieces thereof, the cable connection relation among the equipment and a cable contact point table, and establishing a satellite cabin product structure tree and a corresponding three-dimensional digital cable model thereof;
(2) simplifying the satellite cabin section product structure tree established in the step (1) and a three-dimensional digital cable model corresponding to the satellite cabin section product structure tree, extracting a cable end electric connector, a single cable wire harness trend and a single cable cross cabin identification from the satellite cabin section product structure tree, and generating a product structure tree related to assembly and a corresponding digital general assembly view of the product structure tree;
(3) giving assembly information represented by an MBD data set to the cable end electric connector to be installed in the digital assembly view obtained in the step (2), wherein the assembly information comprises assembly information and thermal control information;
(4) extracting a product structure hierarchical relationship and a cable hierarchical relationship from a product structure tree related to assembly, extracting the general assembly information of all assemblies related to assembly from the digital general assembly view after the general assembly information represented by the MBD data set is given in the step (3), summarizing to generate a general assembly model description file, and sending the general assembly model description file and the digital general assembly view after the general assembly information represented by the MBD data set are given to a general assembly site three-dimensional process system;
(5) and according to the general assembly model description file and a digital general assembly view after the general assembly information represented by the MBD data set is given, reconstructing an assembly product structure tree in the three-dimensional process system, adding auxiliary tools and process information required during assembly, and generating a digital general assembly cable model and a general assembly information matching detail list for guiding the actual assembly of the cable.
And (4) detecting the final assembly model description file and the digital final assembly view before sending the final assembly model description file and the digital final assembly view in the step (4), if the final assembly model description file and the digital final assembly view are correct, sending the final assembly model description file and the digital final assembly view to a final assembly field three-dimensional process system, and if the final assembly model description file and the digital final assembly view are incorrect, sending alarm information.
And the satellite cabin product structure tree and the three-dimensional digital cable model are built by using a CATIA tool.
The cable is divided into three types of power cables, signal cables and initiating explosive devices by the cable registration information, and different cable types are distinguished through colors.
And storing the final assembly information represented by the MBD data set in an EXCEL file in a format recognizable by the CATIA tool, driving the CATIA tool to automatically recognize the final assembly information by the EXCEL file, and loading the final assembly information to a digital final assembly view.
The general assembly model description file is a two-dimensional table, and the hierarchical relationship of the product structure and the hierarchical relationship of the cable are expressed by respectively listing the father item and the son item in fixed columns.
Compared with the prior art, the invention has the advantages that:
(1) according to the method, a product structure tree related to assembly and a corresponding digital general assembly view thereof are extracted on the basis of a three-dimensional digital cable model, the concept of an MBD data set is introduced to endow general assembly information for increasing a cable end electric connector to be installed, the general assembly information and the completed digital general assembly view are issued by a factory, finally, auxiliary tool and process information are added to form a detailed table for matching the digital general assembly cable model and the general assembly information, the whole process is digital, and the working efficiency is greatly improved;
(2) the invention automatically detects the final assembly model description file and the digital final assembly view before sending the final assembly model description file and the digital final assembly view, thereby improving the accuracy and the reliability;
(3) according to the three-dimensional digital cable model, the cable volume information endows the power cable, the signal cable and the initiating explosive device cable with different colors, so that the cable types can be visually distinguished, and the three-dimensional digital cable model is convenient to install;
(4) the final assembly model description file extracts product structure information according to a parent-child relationship and expresses the product structure information as structured information, so that reconstruction is facilitated;
(5) different installation modes in the final assembly information are directly expressed in the three-dimensional model, and the equipment support is displayed in a three-dimensional mode and is intuitive and understandable;
(6) the invention provides the final assembly information matching detail list, so that the installation part door can be conveniently extracted by the program to form a practical detail list, and the working efficiency is improved;
(7) according to the invention, wood model verification is cancelled, and star-on-cable installation is completed according to the identification on the physical cable and the cable network three-dimensional model during assembly, so that the efficiency is improved.
Drawings
FIG. 1 is a flow chart of a method for making a digitized cable assembly model of a satellite cabin segment according to the invention;
FIG. 2 is a schematic diagram of a satellite bay product tree according to an embodiment of the invention;
FIG. 3(a) is a three-dimensional view of a direct mount of an embodiment of the present invention;
FIG. 3(b) is a three-dimensional view of an embodiment of the present invention with an insulation mat installed;
FIG. 3(c) is a three-dimensional view of a nut mounting mode according to an embodiment of the present invention;
fig. 3(d) is a three-dimensional view of a back-piercing installation mode according to an embodiment of the present invention.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings and specific embodiments.
The invention introduces the concept of MBD data set and the method of three-dimensional model downloading, firstly, completely describes the digital three-dimensional cable, then extracts the product structure tree related to the assembly and the corresponding digital general assembly view thereof, then gives the general assembly information represented by the MBD data set, extracts the information to form a general assembly model description file, and distributes the general assembly model description file together with the digital general assembly view given after the general assembly information represented by the MBD data set, and finally, adds auxiliary tools and process information to form a digital general assembly cable model and a general assembly information detailed table, so that the digital general assembly cable model meets the three-dimensional process requirements to guide the establishment and the matching of a display prototype for practical application And (6) cable installation on site.
As shown in fig. 1, the method comprises the following specific steps:
(1) establishing a three-dimensional digital cable model of the satellite cabin section
According to the layout of the equipment and the supporting piece thereof in the satellite cabin section, the appearance diagram of the equipment and the supporting piece thereof, the cable connection relation among the equipment and the cable contact table, a CATIA tool is adopted to design a cable network cross cabin mark, and a satellite cabin section product structure tree and a corresponding three-dimensional digital cable model are established.
The cabin-crossing identification of the cable network in the three-dimensional digital cable model is designed to complete the installation of the physical cable network, and the main process is as follows: and cross-cabin marks are arranged at cross-cabin points, through holes and special requirements (such as corners and bulges) and named according to agreed mark name rules, the cross-cabin marks are manufactured simultaneously during cable production, and the star-on-cable installation can be completed by contrasting the cross-cabin marks on the three-dimensional digital cable model according to the cross-cabin marks on the real cables when final assembly and laying are carried out.
The three-dimensional digital cable model comprises: the method comprises the following steps that the layout of equipment and supporting pieces thereof in a satellite cabin section refers to geometry, an equipment end electric connector, a cable end electric connector, the wiring harness trend of a single cable, the electric connection code of the single cable, a cross cabin mark of the single cable, a ribbon assisting the cable trend, wiring harness support and cable registration information; the satellite cabin product structure tree comprises a satellite name, a cabin name and code, a cable registration name and code, a single cable electrical connection code, a single cable cross cabin mark, cable fixing point information (such as a nylon base) and wire harness supporting information (such as a T-shaped support), and free end information (such as a contact pin, a jack mark, a temperature measuring point for measuring temperature and the like. The satellite cabin segment product structure tree and the three-dimensional digital cable model are divided into cabin segments, the cabin segment cable model is established below a cabin segment model root node and is divided into cabin segments according to an album and a cable number in sequence, as shown in fig. 2, XX-2_2-0_ ELE represents a cabin segment, XX-2_2-0_ ELE _ N01 represents a power cable album, XX-2W1001 represents a single cable in the power cable album, XX-2_2-0_ ELE _ N02 represents a signal cable album, XX-2W2001 represents a single cable in the signal cable album, XX-2_2-0_ ELE _ N03 represents a firer cable album, and XX-2W3001 represents a single cable in the signal cable album. In the three-dimensional digital cable model, the cable is divided into three types of a power cable, a signal cable and an initiating explosive device cable by cable registration information, and different cable types are distinguished through colors.
(2) Simplifying the three-dimensional digital cable model, extracting a cable end electric connector, the trend of a single cable harness and a single cable cross-cabin identification from the three-dimensional digital cable model, and generating a product structure tree related to assembly and a corresponding digital general assembly view thereof; such as: and removing models such as a ribbon and the like of the electric support and the auxiliary cable trend, and only reserving the electric connector at the cable end, the trend of a single cable wire harness and the cross-cabin identification of the single cable.
(3) And (3) endowing the cable end electric connector to be installed in the digital assembly view obtained in the step (2) with assembly information represented by an MBD data set.
Endowing the digital final assembly cable with final assembly information which mainly comprises assembly information and thermal control information, wherein the assembly information comprises an installation mode, a fastener and final assembly auxiliary material information; the thermal control information comprises the specifications and the number of the coated thermal grease and the thermal insulation pad; the fastener information comprises the specification number of screws, the specification and the number of elastic cushions, the specification and the number of flat cushions, and the general assembly auxiliary material information comprises 420 glue, 414 glue, a nylon cable tie and heat shrinkable cloth;
the package information represented by the MBD dataset is stored in an EXCEL file in a format recognizable by the CATIA tool, as shown in table 1. The EXCEL file drives the CATIA tool to automatically recognize final assembly information and load the final assembly information into a digital final assembly view to form a data set based on model definition (MBD).
Table 1 general assembly information table
| Name (R) | Mounting of Means for | Screw nail Type (B) | Mounting position Placing X | Mounting position Put Y | Mounting of Position Z | Mounting of Direction of rotation | Mounting of Moment of force | Assembly Auxiliary material | Screw specification | Number of | Specification of spring washer | Number of | Flat cushion specification | Number of | Heat insulation pad Thickness of |
| R | B | M5 | 966.4 | -404.5 | 1000 | to-Z | 4.5 | 420 glue | QJ2582-93 M5X14 | 1 | QJ2963.2-97 5 | 1 | GB/T97.1-2002 5 | 1 | 2 |
| 2 | B | M5 | 1084.9 | -440.8 | 1000 | to-Z | 4.5 | 420 glue | QJ2582-93 M5X14 | 1 | QJ2963.2-97 5 | 1 | GB/T97.1-2002 5 | 1 | 2 |
The assembly information of the cable end electrical connector to be mounted in the table above is determined by:
(a) determining installation modes according to the externally input thermal control installation requirements, wherein the installation modes comprise direct installation, installation with a heat insulation pad, back-through installation and nut installation;
as shown in fig. 3(a), 3(b), 3(c), and 3(d), the direct-mount type arrangement fastener includes: 1 screw, 1 standard flat pad and 1 standard elastic pad; the installation mode with the heat insulation pad is used for the condition that the heat insulation pad is padded between equipment and an installation surface, and the configuration fastener comprises: 1 screw, 1 flat pad, 1 elastic pad and 1 heat insulation pad; the back-through mounting is used for having the screw hole on the equipment, and the screw is screwed into the equipment from the mounting plate side and is fixed, and its configuration fastener includes: 1 screw, 1 flat pad, 1 bullet pad. The nut is installed and is used for through bolt, nut fixed equipment on the installation face, and its configuration fastener includes: 1 screw, 2 flat pads, 1 bullet pad, 1 nut. The installation mode is shown by a three-dimensional graph, and a user can select the installation mode conveniently and intuitively.
(b) And determining the specifications of the screw, the flat pad and the elastic pad according to the aperture of the mounting hole, and determining the moment according to the specifications.
(c) When the installation mode is direct installation, back-through installation and nut installation, the length of the screw is equal to the standard flat cushion height + the elastic cushion height +5 times of the screw pitch + the thickness of the lug of the installed equipment + the allowance; when the installation mode was for taking the heat insulating mattress to install, the length of screw is the flat height of filling up + bullet pad height +5 times pitch + by erection equipment auricle thickness + heat insulating mattress thickness + surplus. The value range of the allowance is as follows: 1 mm-1.5 mm.
(d) The mounting position, the mounting direction and the number are all obtained from the outline drawing of the equipment and the supporting piece thereof.
(4) Extraction product structure and assembly information
And (3) extracting the product structure hierarchical relationship and the cable hierarchical relationship from the product structure tree related to assembly, extracting the assembly information of all assembly related components from the digital assembly view after the assembly information represented by the MBD data set is given in the step (3), and summarizing to generate an assembly model description file.
The general assembly model description file is in a two-dimensional EXCEL form, and each EXCEL form corresponds to the digital general assembly view of the cable general assembly one by one, namely each digital general assembly view of the cable general assembly is matched with one EXCEL form. The form line titles are the father code number, father version, code number, product code number, instance name, version, quantity, part type, installation type, etc. As shown in table 2, the product structure hierarchy and the cable hierarchy are implemented by respectively listing the parent and the word in fixed columns. Sequentially arranging the wiring harnesses according to the directions of the whole star, the cabin sections, the bundled cables, the single cables and the single cables, firstly extracting a root node (namely a whole star node) of a product structure, then extracting a cabin section node, and simultaneously extracting a parent code and a parent file name of a primary node on the cabin section node to be placed in the same row of a general assembly model description file; then, sequentially extracting the branch cables and the single cable and placing the branch cables and the single cable in the same row of the general assembly model description file; the electrical connectors included under the individual cables are then extracted, the wire harness run is geometric. The method comprises the steps of extracting model information required by cable assembly, wherein the model information comprises fastener information, thermal control information and the like, the fastener comprises an elastic pad, a flat pad, a screw, a dispensing condition and a tightening torque, the thermal control information comprises heat conduction grease and a heat insulation pad, and the heat insulation pad has different specifications.
TABLE 2 general Assembly model description File example
(5) And issuing the inspection
Synchronously uploading the final assembly model description file and the digital final assembly view given with the final assembly information represented by the MBD data set to a product data management system, and sending the final assembly model description file and the digital final assembly view to a final assembly site three-dimensional process system through the product data management system; and simultaneously, sending an audit model description to a product data management system, wherein the audit model description indicates that the cable model contains information, format, release model position and product structure level, and is sent to a final assembly site three-dimensional process system under the control of approval. And during submission, the part names and specifications which represent the assembly information and the model attributes in the final assembly model description file are automatically matched and detected with the standard part names and specification marks stored in the rule base, and the validity and the correctness of the data of the final assembly model description file are detected, so that the final assembly model description file forms a standard format and is convenient to reconstruct in a three-dimensional process system.
(6) And use of the same
According to the general assembly model description file and the digital general assembly view given with the general assembly information represented by the MBD data set, the assembly product structure tree is reconstructed in the three-dimensional process system, the auxiliary tools and process information required during assembly are added, and a digital general assembly cable model and a general assembly information matching detail list are generated and used for guiding the actual assembly of the cable. Required auxiliary fixtures: number and specifications of binding tapes, heat shrink cloths, etc. The process information is as follows: binding requirements of cables in bundles, dispensing requirements (dispensing position and dispensing amount), tools used during installation, installation sequence and operation requirements; the final assembly information matching detail sheet comprises: fasteners and cables are summarized.
In conclusion, the invention adopts a digital cable distribution mode, which has the advantages of maximum utilization of three-dimensional model data sources, convenient data extraction, good visualization and the like, the work is completed by the overall movement of machinery to designers, the overall movement of machinery to designers comprehensively considers the contents of signal power isolation, cable network diameter after combination, cable network star installation convenience and the like, in the design process, the cables to be combined are subjected to combined design, and the cables produced in a factory are in a combined state. And simultaneously binding cross-cabin identification on the cable according to a digital model. And the final assembly department can finish the star-mounting and laying of the cable according to the cross-cabin identification and the digital final assembly cable model. The working efficiency is greatly improved.
The parts of the invention not disclosed are common general knowledge of the invention.
Claims (6)
1. A method for manufacturing a digital final assembly cable model of a satellite cabin section is characterized by comprising the following steps:
(1) designing a cable network cross-cabin identification according to the layout of equipment and supporting pieces thereof in the satellite cabin, the appearance diagram of the equipment and the supporting pieces thereof, the cable connection relation among the equipment and a cable contact point table, and establishing a satellite cabin product structure tree and a corresponding three-dimensional digital cable model thereof;
(2) simplifying the satellite cabin section product structure tree established in the step (1) and a three-dimensional digital cable model corresponding to the satellite cabin section product structure tree, extracting a cable end electric connector, a single cable wire harness trend and a single cable cross cabin identification from the satellite cabin section product structure tree, and generating a product structure tree related to assembly and a corresponding digital general assembly view of the product structure tree;
(3) giving assembly information represented by an MBD data set to the cable end electric connector to be installed in the digital assembly view obtained in the step (2), wherein the assembly information comprises assembly information and thermal control information;
(4) extracting a product structure hierarchical relationship and a cable hierarchical relationship from a product structure tree related to assembly, extracting the general assembly information of all assemblies related to assembly from the digital general assembly view after the general assembly information represented by the MBD data set is given in the step (3), summarizing to generate a general assembly model description file, and sending the general assembly model description file and the digital general assembly view after the general assembly information represented by the MBD data set are given to a general assembly site three-dimensional process system;
(5) and according to the general assembly model description file and a digital general assembly view after the general assembly information represented by the MBD data set is given, reconstructing an assembly product structure tree in the three-dimensional process system, adding auxiliary tools and process information required during assembly, and generating a digital general assembly cable model and a general assembly information matching detail list for guiding the actual assembly of the cable.
2. The method for making the digital assembly cable model of the satellite cabin segment according to the claim 1, characterized in that the assembly model description file and the digitized assembly view after the assembly information represented by the MBD data set is sent in the step (4) and is detected before the digitized assembly view, if the result is correct, the digitized assembly view after the assembly model description file and the assembly information represented by the MBD data set is sent to the assembly site three-dimensional process system, and if the result is incorrect, an alarm message is sent.
3. The method for making the digital final assembly cable model of the satellite cabin section according to claim 1, wherein the product structure tree of the satellite cabin section and the three-dimensional digital cable model are built by using CATIA tools.
4. The method for making the digital final assembly cable model of the satellite cabin section according to claim 1, wherein the cable is divided into three types of power cables, signal cables and initiating explosive devices by cable registration information, and different cable types are distinguished by colors.
5. The method for making the digital final assembly cable model of the satellite bay according to claim 1, wherein the final assembly information represented by the MBD data set is stored in an EXCEL file in a format recognizable by the CATIA tool, and the EXCEL file drives the CATIA tool to automatically recognize the final assembly information and load the final assembly information into the digital final assembly view.
6. The method as claimed in claim 1, wherein the assembly model specification file is a two-dimensional table, and the product structure hierarchical relationship and the cable hierarchical relationship are expressed by respectively listing parent items and child items in fixed columns.
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