CN117421888A - Automatic identification method and system for consumable components in BOM structure of airplane - Google Patents

Automatic identification method and system for consumable components in BOM structure of airplane Download PDF

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Publication number
CN117421888A
CN117421888A CN202311356146.5A CN202311356146A CN117421888A CN 117421888 A CN117421888 A CN 117421888A CN 202311356146 A CN202311356146 A CN 202311356146A CN 117421888 A CN117421888 A CN 117421888A
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China
Prior art keywords
consumable
pbom
components
unit
parts
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Pending
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CN202311356146.5A
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Chinese (zh)
Inventor
罗全华
王朕权
胡成
廖新春
高健鹰
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Chengdu Yisan Technology Co ltd
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Chengdu Yisan Technology Co ltd
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Priority to CN202311356146.5A priority Critical patent/CN117421888A/en
Publication of CN117421888A publication Critical patent/CN117421888A/en
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/20—Design optimisation, verification or simulation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/10—Geometric CAD
    • G06F30/15—Vehicle, aircraft or watercraft design
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/30—Computing systems specially adapted for manufacturing

Abstract

The invention discloses an automatic identification method and system for consumable components in an aircraft BOM structure. The automatic identification method of the consumable components in the BOM structure of the airplane comprises the following steps: step S1: obtaining data stored in a background database, and carrying out structural processing on the obtained data to obtain a PBOM tree structure; step S2: reading process route data corresponding to each component in the PBOM, calling a judging program, traversing each node in the PBOM, carrying out logic judgment on whether each component serving as the node is a consumable part or not according to the process route, and marking a judging result by using an identifier; the process route data comprises a delivery unit and a main control unit corresponding to the components.

Description

Automatic identification method and system for consumable components in BOM structure of airplane
Technical Field
The invention relates to the technical field of aircraft manufacturing, in particular to an automatic identification method and system for consumable components in an aircraft BOM structure.
Background
The development of the aircraft is a comprehensive high-technology industry with great difficulty, difficult engineering, wide cooperation range and difficult management, one aircraft is easy to have hundreds of thousands of parts, millions of connecting pieces such as rivets, bolts and the like, and the aircraft has the characteristics of frequent design change, various parts and materials, complex part shape and internal structure of the aircraft, dense arrangement of various systems and the like.
The aircraft manufacturing factory firstly builds a PBOM (product process design attribute data set) structure to divide the overall process of each level of components according to the design requirement, then plans an MBOM (product production assembly attribute data set) structure according to the layout condition of a factory workshop, and each workshop is manufactured and assembled based on the PBOM/MBOM structure. The PBOM structural model is shown in figure 1. The PBOM and the MBOM are taken as important basic data of aircraft manufacturing, and the information integrity, normalization, consistency and timeliness of the components are important for the management and control of the whole production.
After the PBOM structure is built and released, aircraft manufacturing factory technicians need to build and Manufacture BOM (MBOM) according to the layout plan of an actual aircraft processing assembly workshop, wherein components used for assembly and manufacture in the MBOM structure are derived from the PBOM, and the components planned in the PBOM need to be ensured to be consumed into the MBOM accurately.
When components are distributed and added to the MBOM from the PBOM, the PBOM is provided with a plurality of component objects from a top model to a bottom part, each link only needs to consume one component object to the MBOM, and other components do not need to consume. The parent-child item structure relationship of the components in the PBOM is shown in fig. 2, wherein a is an illustration of the links from the top layer to the bottom layer of the aircraft. On each link, only one component object consumption is required to be added into the MBOM structure, and other components are not required to be consumed.
In building a planned MBOM structure, it is necessary to identify which components of the PBOM structure are consumable parts. The aircraft manufacturer and craft typically identify and determine which components on each link are consumable, and then distribute the components to the MBOM structure.
However, the aircraft PBOM has deep level and complex structure, the consumable component information needs to be identified from the hundred thousand-level component objects according to different models and frames, all the components are manually identified by aircraft manufacturing unit technicians, the positions of the components in the PBOM are judged by means of personal experience, and the following problems exist in the conditions of a production unit and a delivery unit.
(1) The number of the PBOM structure layers and the number of the component objects of each model are large, and the workload of manual judgment is huge one by one;
(2) Whether the components under different structures can be consumed or not can be accurately judged by the experience of a craftsman, and the requirements on the craftsman are high and mistakes are easy to occur;
(3) The PBOM structures of the same type of aircraft under different frames are different, so that the consumable component object information of the same type of aircraft under different frames is different, a process engineer is required to recognize and process the aircraft frame by frame, a large number of repeated works are caused, and errors are easy to occur;
(4) Only one component object of each link from the top layer to the bottom layer of the airplane is required to be set as a consumable part, and other components are not required to be consumed. This requirement needs to be determined empirically manually, and it is easy to determine that the consumable is missing or repeated (more than two components are provided as the consumable on one link).
Chinese patent document CN202110239607.5 discloses a tracking technique of an RFID (radio frequency identification) part authentication and processing part, which embeds a communication part in a consumable part, thereby realizing identification tracking of the consumable part. It is applied to actual specific production processes, but there is no real object for the development design process, and thus tracking cannot be identified by embedding communication components.
However, none of the prior art methods for automatically identifying consumable parts of a BOM.
Disclosure of Invention
The invention aims to provide an automatic recognition method and system for consumable components in an aircraft BOM structure, which are used for completing the judgment of the consumable components of the components by adopting a judgment program by manually recognizing the consumable components one by one, so that the recognition of the consumable components can be automatically completed in batches by an information system, the manual judgment workload is liberated, and the efficiency and quality of processing the consumable components by a craftsman are improved.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the automatic identification method of the consumable components in the BOM structure of the airplane comprises the following steps:
step S1: obtaining data stored in a background database, and carrying out structural processing on the obtained data to obtain a PBOM tree structure;
step S2: reading process route data corresponding to each component in the PBOM, calling a judging program, traversing each node in the PBOM, carrying out logic judgment on whether each component serving as the node is a consumable part or not according to the process route, and marking a judging result by using an identifier; the process route data comprises a delivery unit and a main control unit corresponding to the components.
As a preferred way, step S3 is also included, in which a statistics program is called to count the number of consumable parts to be consumed for marking.
As a preferred embodiment, the judgment logic of the judgment program is as follows:
the components of the main manufacturing unit as assembly plants are not consumable parts;
the main unit of the bearing system is a packaging and shipping workshop, and the components delivered by the unit of the delivery system are not consumable parts;
the components delivered in units of packaging delivery workshops are not consumable parts;
the delivery unit is an assembly plant, the main bearing unit is any unit component in a parts plant, a purchasing unit, a final assembly plant and a packaging and shipping workshop is a consumable part;
the main unit is any one of an external factory, a parts factory and a purchasing unit, and the delivery unit is the component of the external factory and is a consumable part.
As a preferred technical solution, the statistical formula in the statistical procedure is: s=n (a) N (a-1) N (a-2) N (1); wherein a represents the layer where the component is located, N represents the number of packages, N (a) represents the number of packages of the consumable part in the parent list thereof, and N (a-1) represents the number of packages of the parent of the consumable part; n (a-2) represents the number of singletons of the parent of the consumable until tracing back to the layer 1 top model; n (1) represents the number of packages of the top model.
The automatic recognition system of the consumable components in the BOM structure of the airplane comprises a PBOM construction module, a consumable part recognition module and a consumable part statistics module;
the PBOM construction module stores calling data from a background database and outputs the calling data in a visual form at a system interface according to a PBOM structure level;
a consumable part identification module which reads required process route data from the PBOM, invokes a judging program, and identifies and marks the consumable part based on the process route data;
a consumable part statistics module which reads marked consumable parts and invokes a statistics program to count the consumable parts;
compared with the prior art, the method has the following beneficial effects:
in the invention, in the process of identifying whether the aircraft component is a consumable part, a step of logically judging by a judging program is introduced, and automation of aircraft component identification is completed, thereby reducing the workload of a craftsman.
Drawings
FIG. 1 is a diagram of a PBOM structural model of an aircraft;
FIG. 2 is a diagram of the parent-child structure of components in the PBOM of an aircraft; a is the aircraft top-to-bottom part link;
FIG. 3 is a schematic diagram of a fully-framed PBOM architecture constructed by the system;
fig. 4 is a flowchart of a method for automatically identifying consumable parts in an aircraft BOM structure according to a first embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
On the contrary, the application is intended to cover any alternatives, modifications, equivalents, and variations that may be included within the spirit and scope of the application as defined by the appended claims. Further, in the following description of embodiments of the present application, specific details are set forth in order to provide a more thorough understanding of the present application. The present application will be fully understood by those skilled in the art without a description of these details.
Embodiment one: as shown in fig. 4, a method for automatically identifying consumable components in an aircraft BOM structure includes the following steps:
process S1: constructing a full-frame PBOM structure; based on the single-layer parent-child relation recorded in the background database, the parent-child relation is extracted layer by layer from the top model to the bottom part according to the association relation between data, and then the parent-child relation is extracted and constructed according to the hierarchy. The single-layer parent-child relationship record table in the background database is shown in table 1.
Specifically, the implementation of the process S1 includes the following steps:
step S11: the system extracts the parent-child item relation of each component from the background database;
step S12: the system judges and identifies the top model component (the component type is the object of the finished product model, the object only has the lower child item and has no father item information) from the corresponding model database table of the background according to the selected model;
step S13: the system acquires sub-item information layer by layer downwards from the top-layer model component, and builds a full-rack PBOM (namely, a PBOM structure under all aircraft racks).
Table 1:
process S2: the system determines whether the consumable part is based on the process route, and the implementation of the process comprises the following steps:
step S21: the system reads the PBOM data, invokes a judging program, starts from each component at the bottom layer of the PBOM (namely, the component without the subitem at the bottom layer), judges whether the component is a consumable part based on the process route, and if the component is judged to be the consumable part, identifies the component as the consumable part; if it is determined that the consumable part is not a consumable part, step S22 is performed;
step S22: continuing to judge whether the upper layer part is a consumable part, if so, marking the part as the consumable part; if it is determined that the device is not a consumable device, step S22 is repeatedly performed until the top model.
The schematic of the fully-framed PBOM structure is shown in fig. 3.
Wherein determining whether a component is a consumable part based on a process route means that determination logic is written in a program. In this embodiment, description is made of a conventional rule of a process route:
in the PBOM data architecture, the process route units of the parts are typically represented by A-X-B (e.g., 21-22-15), wherein A, X, B represents units for carrying out the process; when the route has only one unit A, the unit A is a main bearing unit; when the route unit is equal to or more than 2, for example, A-X-B; the penultimate unit is the master unit, i.e., unit X is the master unit.
The delivery unit is the last unit in the route, such as process route A-X-B, and the delivery unit is A.
In the actual production process, each aircraft production unit is coded, for example, a foreign unit: 131AA, 131BB, 131CC, 131DD, 131EE, 131FF, 131GG.
Therefore, the judgment logic written in the program is as follows: (1) The parts of the assembly plant (e.g., reference numbers 1, 2, 11, 15, 17, 18 are assembly plants) in the main manufacturing unit are not consumed, and the parts are not consumable parts;
(2) The main unit of the bearing system is a packaging delivery shop (such as a delivery shop with the code number of 4), the delivery unit is an external factory, the consumption is avoided, and the component is not a consumable part;
(3) When the delivery unit is a package delivery shop, no consumption is required, and the component is not a consumable part;
(4) When the delivery unit is an assembly plant (such as reference numbers 1, 2, 11, 15, 17, 18 are the assembly plants), the main unit is a component plant (such as reference numbers 21, 22, 23, 24, 25, 26, 30, 31, 32, 33, 34, 35, 36, 37, 38, 44, 45, 70) or a purchasing unit (such as reference number AA, BB, CC, DD) or a final assembly plant (such as reference number 7), or a packaging delivery plant (such as reference number 4) component, the components need to be consumed and the components need to be identified as consumable parts.
(5) The main manufacturing unit is an outsource, a parts factory and a purchasing unit, and the parts and components are required to be consumed when the delivery unit is the outsource and are required to be marked as consumable parts.
Process S3: the system calculates the number of consumable parts, and the implementation of the process includes the steps of:
step S31: extracting all the components identified as consumable parts;
step S32: calculating a path of each consumable to the top model;
step S33: invoking an algorithm formula to calculate, and calculating the consumable quantity of the consumable part on each path; the algorithm formula is as follows:
number of consumable parts to be consumed: s=n (a) N (a-1) N (a-2) N (1); wherein a represents the layer where the component is located, N represents the number of packages, N (a) represents the number of packages of the consumable part in the parent list thereof, and N (a-1) represents the number of packages of the parent of the consumable part; n (a-2) represents the number of singletons of the parent of the consumable until tracing back to the layer 1 top model; n (1) represents the number of packages of the top model. I.e., the number of consumables required = the number of packages of the consumable in its parent list × the number of parent packages of the consumable · the number of parent packages of the parent until the top model.
Because the PBOM only has one node component on each path from the top model to the bottom model to consume, the number of middle layer components in each path may not be 1, so the actual number of single machines of the consumable components may not be equal to the number of the consumable components on the direct parent, and the system is required to automatically calculate the actual consumption.
Further, an automatic recognition system for consumable components in the BOM structure of the airplane for realizing the recognition method comprises a PBOM construction module, a consumable part recognition module and a consumable part statistics module;
the PBOM construction module stores calling data from a background database, and constructs the data according to the format requirement of PBOM to generate a PBOM structure;
a consumable part identification module which reads required process route data from the PBOM structure, invokes a judging program, and identifies and marks the consumable part based on the process route data; and providing an interface for consumable marking instructions; the consumable marking instruction comprises two instructions of canceling the consumable marking and adding the consumable marking, so that the consumable marking can be canceled manually and the consumable can be marked manually; the consumable part identification module presets that only one consumable part is allowed for all paths from the top-layer machine type to the bottom layer through the node; when a certain component is set as a consumable part mark manually, the consumable part identification module can extract component information of all paths from the top layer machine model to the bottom layer through the node, if any other component is set as a consumable part on all paths passing through the component, a prompt is given that the component is not allowed to be set as the consumable part, and at the moment, the component can be set after the other consumable parts on all links of the component are canceled, so that only one consumable part can be ensured on each path from the top layer to any bottommost component of the PBOM.
And the consumable part counting module reads marked consumable parts and calls a counting program to count the number of each consumable part.
The present invention can be well implemented according to the above-described embodiments. It should be noted that, based on the above structural design, in order to solve the same technical problems, even some insubstantial improvements made on the present invention fall within the protection scope of the present invention.

Claims (5)

1. The automatic identification method of the consumable components in the BOM structure of the airplane is characterized by comprising the following steps of:
step S1: acquiring data stored in a background database, and carrying out structural processing on the acquired data to obtain PBOM with a tree structure;
step S2: reading process route data corresponding to each component in the PBOM, calling a judging program, traversing each node in the PBOM, carrying out logic judgment on whether each component serving as the node is a consumable part or not according to the process route, and marking a judging result by using an identifier; the process route data comprises a delivery unit and a main control unit corresponding to the components.
2. The method for automatically identifying consumable parts in an aircraft BOM structure according to claim 1, further comprising step S3 of calling a statistics program to count the number of consumable parts to be consumed.
3. The method of automatically identifying consumable parts in an aircraft BOM structure of claim 2 wherein the determining logic of the determining program comprises:
the components of the main manufacturing unit as assembly plants are not consumable parts;
the main unit of the bearing system is a packaging and shipping workshop, and the components delivered by the unit of the delivery system are not consumable parts;
the components delivered in units of packaging delivery workshops are not consumable parts;
the delivery unit is an assembly plant, the main bearing unit is any unit component in a parts plant, a purchasing unit, a final assembly plant and a packaging and shipping workshop is a consumable part;
the main unit is any one of an external factory, a parts factory and a purchasing unit, and the delivery unit is the component of the external factory and is a consumable part.
4. The method for automatically identifying consumable parts in an aircraft BOM structure of claim 2,
the statistical formula in the statistical program is: s=v (a) V (a+1) V (a+2);
wherein a represents the layer where the components are located, a+n represents the top layer of the machine type, V represents the number of single packages, V (a) represents the number of single packages of the consumable part in the parent list thereof, and V (a+1) represents the number of single packages of the parent of the consumable part; v (a+2) represents the number of single loads of the parent item of the consumable; v (a+n) represents the number of packages of the top model.
5. The automatic recognition system of the consumable components in the BOM structure of the airplane is characterized by comprising a PBOM construction module, a consumable part recognition module and a consumable part statistics module;
the PBOM construction module stores calling data from a background database and outputs the calling data in a visual form at a system interface according to a PBOM structure level;
a consumable part identification module which reads required process route data from the PBOM, invokes a judging program, and identifies and marks the consumable part based on the process route data;
and the consumable part counting module reads the marked consumable parts and calls a counting program to count the consumable parts.
CN202311356146.5A 2023-10-17 2023-10-17 Automatic identification method and system for consumable components in BOM structure of airplane Pending CN117421888A (en)

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CN202311356146.5A CN117421888A (en) 2023-10-17 2023-10-17 Automatic identification method and system for consumable components in BOM structure of airplane

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CN202311356146.5A CN117421888A (en) 2023-10-17 2023-10-17 Automatic identification method and system for consumable components in BOM structure of airplane

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