CN116562614A - Method for associating PFMEA (PFMEA) and MBOM (Membrane-based integrated circuit) of railway vehicle - Google Patents

Method for associating PFMEA (PFMEA) and MBOM (Membrane-based integrated circuit) of railway vehicle Download PDF

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CN116562614A
CN116562614A CN202310380543.XA CN202310380543A CN116562614A CN 116562614 A CN116562614 A CN 116562614A CN 202310380543 A CN202310380543 A CN 202310380543A CN 116562614 A CN116562614 A CN 116562614A
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pfmea
mbom
structure tree
rail vehicle
item
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王艳敏
卢峰华
张秋红
杨建华
王莹
宗建平
陈阳
董新华
张亚静
刘博义
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CRRC Tangshan Co Ltd
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Abstract

The invention provides a method for associating PFMEA and MBOM of a railway vehicle. The method comprises the following steps: generating a PFMEA structure tree for the target rail vehicle manufacturing project, the PFMEA structure tree comprising process items for the target rail vehicle manufacturing project and a plurality of process steps for each process item; the process items are generated according to an EBOM structure tree of the target railway vehicle and a manufacturing process of the target railway vehicle, and the process steps are generated according to the MBOM structure tree of the target railway vehicle in a lean production mode; and correspondingly associating the PFMEA structure tree with the MBOM structure tree to realize checking of a corresponding PFMEA analysis result through the MBOM structure tree. The invention can improve the transmission efficiency of the PFMEA analysis result, so that the PFMEA analysis result is accurately and completely transmitted to the station process of MBOM, and the failure problem in the manufacturing process is effectively prevented.

Description

Method for associating PFMEA (PFMEA) and MBOM (Membrane-based integrated circuit) of railway vehicle
Technical Field
The invention relates to the technical field of rail vehicles, in particular to a method for associating PFMEA and MBOM of a rail vehicle.
Background
Rail vehicles are one of the important vehicles, and the safety and reliability of the vehicles are of paramount importance. With the rapid development of society, the technical level requirements of railway vehicle products are higher and higher, the market demands are rapidly met, and the production of safe and reliable products is the foundation of enterprise development. The process potential failure mode and influence analysis (Process Failure Mode and Effects Analysis, PFMEA) in the field of railway vehicles can evaluate the potential technical risk of failure in the manufacturing process of products, analyze the cause and influence of the failure, can effectively solve the technical problem of the production process, reduce the condition of product failure in the production process, improve the safety and reliability of the products, and reduce the risk and cost of the production process.
The analysis result of the PFMEA in the prior art is usually manually transmitted by a technician, and then risk control is carried out according to the analysis result, but the manual transmission mode has low efficiency, and risk control points are easily omitted when risk control is carried out, so that failure problems cannot be effectively prevented in the manufacturing process, and quality problems of products are easy to occur.
Disclosure of Invention
The embodiment of the invention provides a method for associating PFMEA and MBOM of a railway vehicle, which aims to solve the problems of low transmission efficiency and easiness in missing risk control points caused by manually transmitting a PFMEA analysis result in the prior art.
In a first aspect, an embodiment of the present invention provides a method for associating a PFMEA and an MBOM of a rail vehicle, including:
generating a PFMEA structure tree for the target rail vehicle manufacturing project, the PFMEA structure tree comprising process items for the target rail vehicle manufacturing project and a plurality of process steps for each process item; the process items are generated according to an EBOM structure tree of the target railway vehicle and a manufacturing process of the target railway vehicle, and the process steps are generated according to the MBOM structure tree of the target railway vehicle in a lean production mode;
and correspondingly associating the PFMEA structure tree with the MBOM structure tree to realize checking of a corresponding PFMEA analysis result through the MBOM structure tree.
In one possible implementation, a PFMEA structure tree for a target rail vehicle manufacturing project is generated, comprising:
generating a complete manufacturing flow of the target rail vehicle according to the EBOM structure tree of the target rail vehicle and the manufacturing process of the target rail vehicle;
generating process items in the PFMEA structural tree of the manufacturing item of the target rail vehicle according to the complete manufacturing flow;
respectively determining a station corresponding to each process item in an MBOM structure tree of the target railway vehicle and a procedure in the station;
and respectively generating the process steps under each process item according to the corresponding stations and the corresponding working procedures of each process item.
In one possible implementation, associating the PFMEA structure tree with the MBOM structure tree correspondingly, enabling the corresponding PFMEA analysis result to be viewed through the MBOM structure tree, includes:
and respectively associating the process items in the PFMEA structural tree with the procedures in the corresponding stations in the MBOM structural tree, and checking the PFMEA analysis results of the corresponding process items at the nodes of the stations and the nodes of the procedures of the MBOM structural tree.
In one possible implementation, the PFMEA structure tree further includes process work elements;
after generating the process steps under each process item according to the corresponding stations and procedures of each process item, the method further comprises the following steps:
process work elements under each process step are generated separately.
In one possible implementation, the method further includes:
generating functional fields of process steps and process work elements in the PFMEA structural tree when PFMEA analysis is performed; the function field of the process step includes a product characteristic item point and a product characteristic requirement, and the function field of the process work element includes a process characteristic item point and a process characteristic requirement;
generating product characteristics in a control plan according to the product characteristic item points;
generating process characteristics in a control plan according to the process characteristic item points;
and correspondingly generating the standard tolerance of the product characteristics and the process characteristics in the control plan according to the product characteristics requirements and the process characteristics requirements.
In a second aspect, an embodiment of the present invention provides a device for associating PFMEA and MBOM of a rail vehicle, including:
a generation module for generating a PFMEA structural tree of the target rail vehicle manufacturing project, the PFMEA structural tree including a process item of the target rail vehicle manufacturing project and a plurality of process steps of each process item; the process items are generated according to an EBOM structure tree of the target railway vehicle and a manufacturing process of the target railway vehicle, and the process steps are generated according to the MBOM structure tree of the target railway vehicle in a lean production mode;
and the association module is used for correspondingly associating the PFMEA structure tree with the MBOM structure tree, so as to realize checking of a corresponding PFMEA analysis result through the MBOM structure tree.
In one possible implementation manner, the generating module is specifically configured to:
generating a complete manufacturing flow of the target rail vehicle according to the EBOM structure tree of the target rail vehicle and the manufacturing process of the target rail vehicle;
generating process items in the PFMEA structural tree of the manufacturing item of the target rail vehicle according to the complete manufacturing flow;
respectively determining a station corresponding to each process item in an MBOM structure tree of the target railway vehicle and a procedure in the station;
and respectively generating the process steps under each process item according to the corresponding stations and the corresponding working procedures of each process item.
In one possible implementation manner, the association module is specifically configured to associate the process items in the PFMEA structural tree with the processes in the corresponding stations in the MBOM structural tree, so as to view PFMEA analysis results of the corresponding process items at nodes of the stations and nodes of the processes in the MBOM structural tree.
In a third aspect, an embodiment of the present invention provides an electronic device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the steps of the method as described above in the first aspect or any one of the possible implementations of the first aspect when the computer program is executed.
In a fourth aspect, embodiments of the present invention provide a computer readable storage medium storing a computer program which, when executed by a processor, implements the steps of the method as described above in the first aspect or any one of the possible implementations of the first aspect.
The embodiment of the invention provides a method for associating PFMEA and MBOM of a railway vehicle, which comprises the steps of generating a PFMEA structure tree of a target railway vehicle manufacturing project, wherein the PFMEA structure tree comprises process items of the target railway vehicle manufacturing project and a plurality of process steps of each process item; the process items are generated according to an EBOM structure tree of the target railway vehicle and a manufacturing process of the target railway vehicle, and the process steps are generated according to the MBOM structure tree of the target railway vehicle in a lean production mode; the MBOM structure tree comprises various stations used in the manufacturing process and working procedures under each station, can cover all steps of the manufacturing process, and can enable the structure of the PFMEA and failure analysis results to be matched with the structure of the MBOM, so that the failure analysis results can be transmitted to the corresponding stations and working procedures in the MBOM, and the matching of the failure analysis results of the PFMEA and the MBOM in the lean production mode is realized; the PFMEA structure tree is correspondingly associated with the MBOM structure tree, so that the corresponding PFMEA analysis result is checked through the MBOM structure tree, the manual transmission process can be omitted, the PFMEA analysis result is directly transmitted to the MBOM station process, and the transmission efficiency is improved; in addition, the process steps in the PFMEA structure tree are set according to the MBOM structure tree, so that the PFMEA analysis result can be accurately and completely transmitted to the station process of the MBOM, missing risk control points is avoided, and the failure problem in the manufacturing process is effectively prevented.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flowchart of an implementation of a method for associating a rail vehicle PFMEA with MBOM provided by an embodiment of the present invention;
FIG. 2 is a schematic diagram of a hierarchical relationship structure of a PFMEA structural tree according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a functional field correspondence relationship provided in an embodiment of the present invention;
FIG. 4 is a schematic diagram showing the association of process items in a PFMEA structural tree with a station process in a MBOM structural tree according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a device for associating PFMEA and MBOM of a rail vehicle according to an embodiment of the present invention;
fig. 6 is a schematic diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the following description will be made by way of specific embodiments with reference to the accompanying drawings.
The process potential failure mode and influence analysis (Process Failure Mode and Effects Analysis, PFMEA) is one of the potential failure mode and influence analysis (Failure Mode and Effects Analysis, FMEA), is a qualitative analysis method of a team-oriented system, and is mainly used for evaluating the potential technical risk of failure in the product manufacturing process, analyzing the cause and influence of the failure, recording preventive and detection measures, and suggesting measures for reducing the risk.
The product characteristics of the PFMEA analysis function need to be transferred to a control plan, an inspection card and the like for product control, the process characteristics of the process work elements need to be transferred to a job instruction book, a process skill training teaching material and the like for guiding and training the operation of operators, and the PFMEA analysis also identifies key and important processes according to the analysis result to form a special characteristic list.
In the manufacturing process of the railway vehicle, a fine station beat production mode is generally adopted, and station beat production refers to production by using stations as operation organization units and adopting a running water operation organization production mode according to beat balanced production; the station refers to the position of an area where a worker finishes specified operation content in one beat when a product flows on a production line and the product relatively stays; a plurality of continuous production stations form a production line; beats refer to the time between successive productions of one product at a time and at successive frequencies during a working day. The working position beat time of one production line is fixed, and the production process of the vehicle product is divided into each working position according to the structural form and the requirement to finish the manufacture of the product.
The existing railway vehicle manufacturing field begins to apply PFMEA to analyze in the new product development process, but PFMEA analysis results are still manually transmitted by technicians, risk control is carried out by compiling a control plan, checking cards, operation instructions and the like, the transmission efficiency is low, risk control points are easy to miss when risk control is carried out, moreover, the risk control points cannot be tightly combined with a fine station beat production mode, risk measures of PFMEA analysis cannot be practically and effectively executed in the production process, the product quality is improved, the cost is reduced, failure problems cannot be effectively prevented in the manufacturing process, and quality problems of products are easy to occur.
Management software is commonly used for system control in the process of railway vehicle product research and development design, process design and manufacturing. Bill of materials (BOM), also known as a product structure table or product structure tree, refers to a list of required parts of a product and its structure. BOM is taken as basic data of enterprises, runs through the complete production cycle of products, and is a tie for enterprise design and manufacturing integration. Engineering bill of materials (Engineering Bill of Material, EBOM) is generated by the design department and is typically used to describe design indicators for products and design relationships from part to part. The manufacturing bill of materials (Manufacturing Bill of Material, MBOM) refers to a hierarchical list of parts of a product according to manufacturing processes and related tooling fixtures, and manages manufacturing process knowledge of manufacturing, assembling and the like of each part. MBOM establishes the product spare part technology on the basis of the EBOM, determines information such as process, station, frock and virtual piece.
Based on the method, the invention provides a method for associating the PFMEA and the MBOM of the railway vehicle, and the PFMEA and the MBOM (manufacturing bill of materials, manufacturing Bill of Material) are associated, so that the combination of the PFMEA and the lean station metronome production mode is realized, the effective measure of the PFMEA analysis risk is practically executed in the production process, the product quality is improved, and the cost is reduced. Fig. 1 is a flowchart for implementing a method for associating PFMEA and MBOM of a rail vehicle according to an embodiment of the present invention, which is described in detail below:
step S101, generating a PFMEA structure tree of the target rail vehicle manufacturing project, the PFMEA structure tree including a process item of the target rail vehicle manufacturing project and a plurality of process steps of each process item; the process items are generated according to the EBOM structure tree of the target railway vehicle and the manufacturing process of the target railway vehicle, and the process steps are generated according to the MBOM structure tree in the lean production mode of the target railway vehicle.
In addition, the PFMEA structure tree also includes a plurality of process work elements at each process step.
The PFMEA analysis process comprises seven steps, namely planning and preparation, structural analysis, functional analysis, failure analysis, risk analysis, optimization analysis and result documentation. The first step is planning and preparation, which is mainly used for determining the analysis range, and the process of the PFMEA analysis which can affect the product quality in the factory comprises the following steps: receiving processes, part and material storage, product and material delivery, manufacturing, assembly, packaging, labeling, finished product transportation, storage, maintenance processes, inspection processes, rework and rework processes, and the like. The rail vehicle has complex products and huge number of component parts, and relates to a plurality of processes, and the PFMEA analysis is time-consuming and labor-consuming in the whole process, so that key important manufacturing and assembling processes can be selected for analysis.
The second step is structural analysis, mainly used for visualization of analysis scope, which uses a structural tree or a process flow graph to identify and decompose a manufacturing system into process items, process steps and process working elements, referring to the hierarchical relational structural schematic diagram of the PFMEA structural tree shown in fig. 2, the structural analysis uses the process items as analysis units, the process steps are manufacturing processes and activities, the process items are final results after all the process steps under the process items, and the process working elements include personnel, machines, raw materials and environments.
The PFMEA structure tree in step S101 is a hierarchical structure composed of process items, process steps and process work elements after the structure analysis in the PFMEA analysis process, the process items are substantially the manufacturing and assembling processes of the target rail vehicle, the process steps under each process item are substantially specific process steps under each manufacturing and assembling process, and the plurality of process work elements under each process step are substantially personnel, machines, raw materials, environments, and the like required for the process steps. For example, the process item may be a roof rack module assembly weld, the process steps include assembling a roof rack module and welding the roof rack module, and the process work elements include a welding engineer, a welding supervisor, a welder, a roof rack module assembly welding fixture, a welder, and the like.
Management software is commonly used for system control in the process of railway vehicle product research and development design, process design and manufacturing. Bill of materials (BOM), also known as a product structure table or product structure tree, refers to a list of required parts of a product and its structure. BOM is taken as basic data of enterprises, runs through the complete production cycle of products, and is a tie for enterprise design and manufacturing integration. Engineering bill of materials (Engineering Bill of Material, EBOM) is generated by the design department and is typically used to describe design indicators for products and design relationships from part to part. The manufacturing bill of materials (Manufacturing Bill of Material, MBOM) refers to a hierarchical list of parts of a product according to manufacturing processes and related tooling fixtures, and manages manufacturing process knowledge of manufacturing, assembling and the like of each part. MBOM establishes the product spare part technology on the basis of the EBOM, determines information such as process, station, frock and virtual piece.
When the PFMEA analysis is in a traditional form analysis mode, data can only be stored in a form and is difficult to transmit to other software systems and structures; in this embodiment, the PFMEA structure tree may be generated by the PFMEA software system, and the PFMEA analysis information is stored in the PFMEA software system in the form of field data, so that when the PFMEA structure tree is associated with the MBOM structure tree, the field data can be directly transmitted to the management software of the MBOM, so that the PFMEA analysis result of each node can be checked on the management software of the MBOM.
Optionally, step S101 generates a PFMEA structure tree of the target rail vehicle manufacturing project, which may be described in detail as: generating a complete manufacturing flow of the target rail vehicle according to the EBOM structure tree of the target rail vehicle and the manufacturing process of the target rail vehicle; generating process items in the PFMEA structural tree of the manufacturing item of the target rail vehicle according to the complete manufacturing flow; respectively determining a station corresponding to each process item in an MBOM structure tree of the target railway vehicle and a procedure in the station; and respectively generating the process steps under each process item according to the corresponding stations and the corresponding working procedures of each process item.
In this embodiment, the EBOM structure tree includes the existing production and assembly process of the target rail vehicle in the design process, but also includes the test process of the train part component in the complete assembly process of the target rail vehicle, so that the specific process in the manufacturing process of the target rail vehicle needs to be determined according to the manufacturing process of the target rail vehicle, and the specific process is combined with the production and assembly process in the EBOM structure tree to form the complete manufacturing process, thereby generating the process item. For example, the process items of the railway vehicle passenger car braking system comprise the installation of a braking module, the installation of a braking pipeline, a train braking test and a micro-control bicycle test which are not included in the EBOM structural tree, and the like.
In addition, the generated process items can be used commonly in the similar products, so that the time for generating the PFMEA structural tree when the PFMEA structural tree is applied to the similar products is reduced.
The MBOM structure tree comprises various stations and working procedures under each station used in the manufacturing process, and can cover all steps of the manufacturing process, so that the process steps under each process item can be determined according to the MBOM structure tree; and according to the process steps in the structural tree of the PFMEA generated by the MBOM structural tree, the structural tree of the PFMEA can be corresponding to the MBOM structural tree, so that the subsequent corresponding association of the structural tree of the PFMEA and the MBOM structural tree can be facilitated, the corresponding PFMEA analysis result can be checked on the nodes of the MBOM, and the PFMEA analysis result is ensured not to be missed.
Specifically, if the process item corresponds to only one station, generating the process steps under the process item directly according to the flow of the process in the station corresponding to the process item; if a process item corresponds to a plurality of stations, in the lean station metronomic production mode, the sequence among the stations may not be the actual sequence of all the working procedures, and then a plurality of process steps under the process item need to be generated according to the flow of all the working procedures in the plurality of stations corresponding to the process item. For example, the brake module installation process item is completed at one station, namely the lean station 7, and the process steps under the brake module installation process item are generated according to the flow of each process in the lean station 7; the high-top installation process item is completed at 2 stations of the lean station 8 and the lean station 10, and has 3 working procedures, so that the process steps under the high-top installation process item are generated according to the 3 working procedures in the lean station 8 and the lean station 10, namely, 3 corresponding process steps are generated.
In addition, the PFMEA structural tree also includes process work elements; after generating the process steps under each process item according to the corresponding stations and procedures of each process item, the method further comprises the following steps: process work elements under each process step are generated separately.
The process work elements specifically comprise personnel, machines, raw materials, environment and the like, the MBOM structure tree comprises hierarchical detail tables of each part of the product according to manufacturing processes, related fixture and the like, and also comprises information such as working procedures, stations, fixtures, virtual parts and the like, and based on the information, the process work elements can be set according to the specific information in the MBOM structure tree.
Generating functional fields of process steps and process work elements in the PFMEA structural tree when PFMEA analysis is performed; the function field of the process step includes a product characteristic item point and a product characteristic requirement, and the function field of the process work element includes a process characteristic item point and a process characteristic requirement; generating product characteristics in a control plan according to the product characteristic item points; generating process characteristics in a control plan according to the process characteristic item points; and correspondingly generating the standard tolerance of the product characteristics and the process characteristics in the control plan according to the product characteristics requirements and the process characteristics requirements.
The third step in the PFMEA analysis process is functional analysis, primarily to describe the intended use of the process item or process step, relating requirements or characteristics to function; the functionality of the process work element reflects the contribution of the process work element to the process step of creating the product feature. In this embodiment, the functional analysis is to generate the required functional fields when performing the PFMEA analysis.
The control plan can be set in the PFMEA software system, the PFMEA analysis can be accurately transmitted to the control plan by generating specific data of the control plan according to the function field of the PFMEA, and missing information during subsequent process control instruction file establishment according to the PFMEA analysis structure can be avoided.
When specific data in a control plan is specifically generated, referring to a functional field corresponding relation diagram shown in fig. 3, product characteristic item points are the flatness of the windshield and the vehicle body cavity along the height difference, corresponding to the product characteristics in the control plan, the product characteristic requirement corresponding to the product characteristic item points is 0 (-2, +4) mm, corresponding to the standard tolerance corresponding to the product characteristics of the windshield and the vehicle body cavity along the height difference flatness in the control plan; the process characteristic item points provide qualified torque values for the torque wrench, the process characteristics in the control plan are correspondingly generated, the process characteristic requirements corresponding to the process characteristic item points are 14Nm, and the standard tolerance corresponding to the process characteristics for providing the qualified torque values for the torque wrench in the control plan is correspondingly generated.
Step S102, the PFMEA structure tree is correspondingly associated with the MBOM structure tree, and the corresponding PFMEA analysis result is checked through the MBOM structure tree.
Optionally, step S102 correspondingly associates the PFMEA structure tree with the MBOM structure tree, so as to view the corresponding PFMEA analysis result through the MBOM structure tree, which may be described in detail as follows: and respectively associating the process items in the PFMEA structural tree with the procedures in the corresponding stations in the MBOM structural tree, and checking the PFMEA analysis results of the corresponding process items at the nodes of the stations and the nodes of the procedures of the MBOM structural tree.
When the PFMEA structure tree of the target railway vehicle manufacturing project is generated correspondingly according to the MBOM structure tree, the process steps in the PFMEA structure tree correspond to the stations and the working procedures in the MBOM structure tree, so that the PFMEA structure tree can be directly and correspondingly associated with the MBOM structure tree, after the association is realized, the corresponding PFMEA analysis result can be checked at the station nodes and the working procedure nodes in the MBOM structure tree, the transmission is not needed by manual transmission, the transmission time is shortened, and the transmission efficiency is improved; moreover, the PFMEA analysis result can be accurately and completely checked, the compiling procedure is guided to check cards, operation instructions and the like, and missing risk control points are avoided, so that PFMEA identification risk measures are effectively executed, the effect of preventing failure is practically achieved, identification quality problems can be avoided, product safety is improved, quality cost is reduced, and production period is shortened. In addition, after the PFMEA structure tree is correspondingly associated with the MBOM structure tree, the existing analysis results in the PFNEA structure tree can be quickly copied and referenced in a plurality of similar products, so that the technical preparation period can be shortened, and the compiling efficiency and quality of the PFMEA analysis of the products can be improved.
When the PFMEA structure tree is correspondingly associated with the MBOM structure tree, the MBOM software system can be communicated with the PFMEA software system, the MBOM structure tree is imported into the PFMEA software system, and the PFMEA structure tree is associated with the MBOM structure tree through the PFMEA software system.
Referring to a schematic diagram of association of a process item in the PFMEA structural tree with a working procedure in the MBOM structural tree shown in fig. 4, there are three process steps under a high roof installation process item in the PFMEA structural tree, namely an installation roof skeleton, an installation middle roof and an installation side roof; the high top plate in the MBOM structure tree is arranged at a station 8 and a station 10, wherein the station 8 is internally provided with two working procedures of middle top installation of a passenger room top plate and framework installation of the passenger room top plate, and the station 10 is internally provided with one working procedure of side top installation of the passenger room top plate; and when the PFMEA structure tree is associated with the MBOM structure tree, the high roof installation process item in the PFMEA structure tree is associated with the roof-in-cabin roof installation process and the roof framework installation process in the station 8 in the MBOM structure tree, and the roof-side-roof installation process in the station 10.
The method comprises the steps of generating a PFMEA structure tree of a target railway vehicle manufacturing project, wherein the PFMEA structure tree comprises a process item of the target railway vehicle manufacturing project and a plurality of process steps of each process item; the process items are generated according to an EBOM structure tree of the target railway vehicle and a manufacturing process of the target railway vehicle, and the process steps are generated according to the MBOM structure tree of the target railway vehicle in a lean production mode; the MBOM structure tree comprises various stations used in the manufacturing process and working procedures under each station, and all steps of the manufacturing process can be covered, so that the generated process steps under each process item correspond to the stations and working procedures in the MBOM structure tree, and the process items in the PFMEA structure tree are related to the stations and working procedures in the MBOM structure tree, so that the corresponding PFMEA analysis results can be checked on nodes of the MBOM, and the PFMEA analysis results are ensured not to be missed; specific data in a control plan is generated according to the process steps and the function fields of the process work elements, so that PFMEA analysis can be accurately transmitted to the control plan, and information omission can be avoided when a process control instruction file is subsequently compiled according to a PFMEA analysis structure; the PFMEA structure tree is correspondingly associated with the MBOM structure tree, so that the corresponding PFMEA analysis result is checked through the MBOM structure tree, the manual transmission process can be omitted, the PFMEA analysis result is directly transmitted to the MBOM station process, and the transmission efficiency is improved; in addition, the process steps in the PFMEA structure tree are set according to the MBOM structure tree, so that a failure analysis result can be accurately and completely transmitted to a station process of the MBOM, missing risk control points is avoided, and the failure problem in the manufacturing process is effectively prevented.
It should be understood that the sequence number of each step in the foregoing embodiment does not mean that the execution sequence of each process should be determined by the function and the internal logic, and should not limit the implementation process of the embodiment of the present invention.
The following are device embodiments of the invention, for details not described in detail therein, reference may be made to the corresponding method embodiments described above.
Fig. 5 shows a schematic structural diagram of a device for associating PFMEA and MBOM of a rail vehicle according to an embodiment of the present invention, and for convenience of explanation, only the parts related to the embodiment of the present invention are shown, which is described in detail below:
as shown in fig. 5, the association device 5 of the rail vehicle PFMEA and the MBOM includes:
a generation module 51 for generating a PFMEA structural tree of the target rail vehicle manufacturing project, the PFMEA structural tree comprising process items of the target rail vehicle manufacturing project and a plurality of process steps of each process item; the process items are generated according to an EBOM structure tree of the target railway vehicle and a manufacturing process of the target railway vehicle, and the process steps are generated according to the MBOM structure tree of the target railway vehicle in a lean production mode;
and the association module 52 is configured to associate the PFMEA structure tree with the MBOM structure tree correspondingly, so as to view the corresponding PFMEA analysis result through the MBOM structure tree.
In one possible implementation, the generating module 51 is specifically configured to:
generating a complete manufacturing flow of the target rail vehicle according to the EBOM structure tree of the target rail vehicle and the manufacturing process of the target rail vehicle;
generating process items in the PFMEA structural tree of the manufacturing item of the target rail vehicle according to the complete manufacturing flow;
respectively determining a station corresponding to each process item in an MBOM structure tree of the target railway vehicle and a procedure in the station;
and respectively generating the process steps under each process item according to the corresponding stations and the corresponding working procedures of each process item.
In one possible implementation, the association module 52 is specifically configured to associate the process items in the PFMEA structural tree with the processes in the corresponding stations in the MBOM structural tree, so as to view the PFMEA analysis results of the corresponding process items at the nodes of the stations and the nodes of the processes in the MBOM structural tree.
In one possible implementation, the PFMEA structure tree further includes process work elements;
the generating module 51 is further configured to generate the process work elements at each process step respectively.
In one possible implementation, the function fields of the process steps and process work elements in the PFMEA structural tree are generated when PFMEA analysis is performed; the function field of the process step includes a product characteristic item point and a product characteristic requirement, and the function field of the process work element includes a process characteristic item point and a process characteristic requirement;
the rail vehicle PFMEA and MBOM association apparatus 5 further comprises a control plan generation module for:
generating product characteristics in a control plan according to the product characteristic item points;
generating process characteristics in a control plan according to the process characteristic item points;
and correspondingly generating the standard tolerance of the product characteristics and the process characteristics in the control plan according to the product characteristics requirements and the process characteristics requirements.
The PFMEA structure tree of the target rail vehicle manufacturing project is generated by the generation module 51, and the PFMEA structure tree comprises a process item of the target rail vehicle manufacturing project and a plurality of process steps of each process item; the process items are generated according to an EBOM structure tree of the target railway vehicle and a manufacturing process of the target railway vehicle, and the process steps are generated according to the MBOM structure tree of the target railway vehicle in a lean production mode; the MBOM structure tree comprises various stations used in the manufacturing process and working procedures under each station, and all steps of the manufacturing process can be covered, so that the generated process steps under each process item correspond to the stations and working procedures in the MBOM structure tree, and the process items in the PFMEA structure tree are related to the stations and working procedures in the MBOM structure tree, so that the corresponding PFMEA analysis results can be checked on nodes of the MBOM, and the PFMEA analysis results are ensured not to be missed; the control plan generation module generates specific data in the control plan according to the process steps and the function fields of the process work elements, so that the PFMEA analysis can be accurately transmitted to the control plan, and missing of information during subsequent process control instruction file establishment according to the PFMEA analysis structure can be avoided; the association module 52 correspondingly associates the PFMEA structure tree with the MBOM structure tree, so that the corresponding PFMEA analysis result is checked through the MBOM structure tree, the manual transmission process can be omitted, the PFMEA analysis result is directly transmitted to the station process of the MBOM, and the transmission efficiency is improved; in addition, the process steps in the PFMEA structure tree are set according to the MBOM structure tree, so that a failure analysis result can be accurately and completely transmitted to a station process of the MBOM, missing risk control points is avoided, and the failure problem in the manufacturing process is effectively prevented.
Fig. 6 is a schematic diagram of an electronic device according to an embodiment of the present invention. As shown in fig. 6, the electronic device 6 of this embodiment includes: a processor 60, a memory 61 and a computer program 62 stored in the memory 61 and executable on the processor 60. The processor 60, when executing the computer program 62, implements the steps of the above-described embodiments of the method for associating a PFMEA with a MBOM for each rail vehicle, such as steps S101 to S102 shown in fig. 1. Alternatively, the processor 60, when executing the computer program 62, implements the functions of the modules in the above-described apparatus embodiments, such as the functions of the modules 51 to 53 shown in fig. 5.
By way of example, the computer program 62 may be partitioned into one or more modules/units, which are stored in the memory 61 and executed by the processor 60 to complete the present invention. One or more of the modules/units may be a series of computer program instruction segments capable of performing particular functions for describing the execution of the computer program 62 in the electronic device 6. For example, the computer program 62 may be divided into modules 51 to 53 shown in fig. 5.
The electronic device 6 may include, but is not limited to, a processor 60, a memory 61. It will be appreciated by those skilled in the art that fig. 6 is merely an example of the electronic device 6 and is not meant to be limiting as the electronic device 6, may include more or fewer components than shown, or may combine certain components, or different components, e.g., the electronic device may further include an input-output device, a network access device, a bus, etc.
The processor 60 may be a central processing unit (Central Processing Unit, CPU), other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), field-programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 61 may be an internal storage unit of the electronic device 6, such as a hard disk or a memory of the electronic device 6. The memory 61 may also be an external storage device of the electronic device 6, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card) or the like, which are provided on the electronic device 6. Further, the memory 61 may also include both an internal storage unit and an external storage device of the electronic device 6. The memory 61 is used to store computer programs and other programs and data required by the electronic device. The memory 61 may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions. The functional units and modules in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working process of the units and modules in the above system may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/electronic device and method may be implemented in other manners. For example, the apparatus/electronic device embodiments described above are merely illustrative, e.g., the division of modules or units is merely a logical functional division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection via interfaces, devices or units, which may be in electrical, mechanical or other forms.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated modules/units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the present invention may implement all or part of the flow of the method of the above embodiment, or may be implemented by a computer program to instruct related hardware, where the computer program may be stored in a computer readable storage medium, and when the computer program is executed by a processor, the steps of each method embodiment described above may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, executable files or in some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention.

Claims (10)

1. A method of associating a rail vehicle PFMEA with an MBOM, comprising:
generating a PFMEA structure tree for the target rail vehicle manufacturing project, the PFMEA structure tree comprising process items for the target rail vehicle manufacturing project and a plurality of process steps for each process item; wherein the process item is generated according to an EBOM structure tree of the target rail vehicle and a manufacturing process of the target rail vehicle, and the process step is generated according to an MBOM structure tree in a lean production mode of the target rail vehicle;
and correspondingly associating the PFMEA structure tree with the MBOM structure tree to realize checking of a corresponding PFMEA analysis result through the MBOM structure tree.
2. The method of associating a rail vehicle PFMEA with a MBOM of claim 1, wherein the generating a PFMEA structure tree for a target rail vehicle manufacturing project comprises:
generating a complete manufacturing flow of the target rail vehicle according to the EBOM structure tree of the target rail vehicle and the manufacturing process of the target rail vehicle;
generating a process item in a PFMEA structure tree of the manufacturing item of the target rail vehicle according to the complete manufacturing flow;
respectively determining a station corresponding to each process item in an MBOM structure tree of the target railway vehicle and a procedure in the station;
and respectively generating the process steps under each process item according to the corresponding stations and the corresponding working procedures of each process item.
3. The method of associating a rail vehicle PFMEA with a MBOM of claim 2, wherein associating the PFMEA structure tree with the MBOM structure tree, for viewing a corresponding PFMEA analysis result through the MBOM structure tree, comprises:
and respectively associating the process items in the PFMEA structural tree with the procedures in the corresponding stations in the MBOM structural tree, and checking PFMEA analysis results of the corresponding process items at nodes of the stations and nodes of the procedures of the MBOM structural tree.
4. The method of associating a rail vehicle PFMEA with a MBOM of claim 2, wherein the PFMEA structural tree further comprises process work elements;
after generating the process steps under each process item according to the corresponding stations and procedures of each process item, the method further comprises the following steps:
process work elements under each process step are generated separately.
5. The method of associating a rail vehicle PFMEA with a MBOM of claim 4, further comprising:
generating functional fields of process steps and process work elements in the PFMEA structural tree when PFMEA analysis is performed; the function field of the process step comprises a product characteristic item point and a product characteristic requirement, and the function field of the process work element comprises a process characteristic item point and a process characteristic requirement;
generating product characteristics in a control plan according to the product characteristic item points;
generating a process characteristic in the control plan according to the process characteristic item points;
and correspondingly generating the standard tolerance of the product characteristic and the process characteristic in the control plan according to the product characteristic requirement and the process characteristic requirement.
6. An apparatus for associating a rail vehicle PFMEA with an MBOM, comprising:
a generation module for generating a PFMEA structural tree for a target rail vehicle manufacturing project, the PFMEA structural tree comprising process items for the target rail vehicle manufacturing project and a plurality of process steps for each process item; wherein the process item is generated according to an EBOM structure tree of the target rail vehicle and a manufacturing process of the target rail vehicle, and the process step is generated according to an MBOM structure tree in a lean production mode of the target rail vehicle;
and the association module is used for correspondingly associating the PFMEA structure tree with the MBOM structure tree, so that a corresponding PFMEA analysis result is checked through the MBOM structure tree.
7. The device according to claim 6, characterized in that said generation module is in particular adapted to:
generating a complete manufacturing flow of the target rail vehicle according to the EBOM structure tree of the target rail vehicle and the manufacturing process of the target rail vehicle;
generating a process item in a PFMEA structure tree of the manufacturing item of the target rail vehicle according to the complete manufacturing flow;
respectively determining a station corresponding to each process item in an MBOM structure tree of the target railway vehicle and a procedure in the station;
and respectively generating the process steps under each process item according to the corresponding stations and the corresponding working procedures of each process item.
8. The device for associating a PFMEA with an MBOM of a rail vehicle according to claim 7, wherein the associating module is specifically configured to associate process items in the PFMEA structure tree with processes in corresponding stations in the MBOM structure tree, respectively, so as to view PFMEA analysis results of the corresponding process items at nodes of the stations and nodes of the processes of the MBOM structure tree.
9. An electronic device comprising a memory for storing a computer program and a processor for calling and running the computer program stored in the memory, characterized in that the processor implements the steps of the method according to any of the preceding claims 1-5 when the computer program is executed.
10. A computer readable storage medium storing a computer program, characterized in that the computer program when executed by a processor implements the steps of the method according to any of the preceding claims 1 to 5.
CN202310380543.XA 2023-04-11 2023-04-11 Method for associating PFMEA (PFMEA) and MBOM (Membrane-based integrated circuit) of railway vehicle Pending CN116562614A (en)

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