CN117573635A

CN117573635A - Drawing management method and system based on PDM system

Info

Publication number: CN117573635A
Application number: CN202311563925.2A
Authority: CN
Inventors: 陈晟达; 吴郑斌; 谢红阳; 林敏�; 朱金星; 施倩莹
Original assignee: Zhejiang Ruige Logistics Technology Co ltd
Current assignee: Zhejiang Ruige Logistics Technology Co ltd
Priority date: 2023-11-22
Filing date: 2023-11-22
Publication date: 2024-02-20

Abstract

The application discloses a drawing management method and system based on a PDM system, which relate to the technical field of computers and comprise the following steps: presetting a drawing design to a production flow template in a PDM system; carrying out format normalization inspection on the drawing according to a preset flow template, and generating an inspection result; after the format normalization check of the drawing passes, the PDM system calls a preconfigured PDF drawing conversion plug-in, the plug-in generates drawing files in PDF format in batches according to a drawing conversion rule preset in the PDM system, and a version number is written in attribute metadata of the generated drawing files in PDF format; the PDM system binds the version number of the drawing file and the material version number of the ERP system by associating the version number of the generated drawing file in PDF format with the material version number of the ERP system; the PDM system takes the acquired drawing file in the PDF format as an accessory and embeds the drawing file into a data record of an engineering bill of materials (EBOM) through a data transmission interface; the version control precision of the drawing in the transmission process is improved.

Description

Drawing management method and system based on PDM system

Technical Field

The invention relates to the technical field of computers, in particular to a drawing management method and system based on a PDM system.

Background

In the design and manufacturing process of the product, the technical drawing related to the product plays an important role in the whole process. After the drawing design is completed, the edition control management is needed, and the design drawing is automatically transmitted to a production system to guide the manufacture of products. The following problems exist in the traditional drawing management: after the drawing design is completed, a standardized management flow and version control are lacked; the format of the drawing is diversified, which brings difficulty to manufacture; the drawing transmission between the design department and the production department is not smooth, and different departments use different systems and cannot be integrated effectively.

With the digitization and systemization of product design and manufacturing processes, PDM product data management systems and ERP enterprise resource planning systems are widely used. The PDM system is used for managing product design data, and the ERP system is used for managing the production manufacturing process.

In the related art, for example, chinese patent document CN113900988A provides a drawing and data processing method, apparatus, computer device, and storage medium. The method comprises the following steps: obtaining a target drawing to be verified; verifying each component and attribute information of the component in the target drawing to obtain a verification report; when the verification passes, generating an equipment element attribute data table based on the target drawing; performing format conversion on the target drawing to obtain a drawing file in a target format; generating a version number; the version number is used for jointly identifying the drawing file, the equipment element attribute data table and the verification report; checking drawing files with the same version number, an equipment element attribute data table and a check report; and when the verification passes, storing the drawing file, the equipment element attribute data table and the verification report of the same version number. But the version control in the scheme is relatively isolated and passive, and the control precision in the circulation from design to production process of the drawing file needs to be further improved.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problem of low version control precision of engineering drawings in the production and transmission process in the prior art, the invention provides a drawing management method and system based on a PDM system, which realizes the management from engineering drawing design to production through the PDM system and improves the version control precision of the drawings in the transmission process.

2. Technical proposal

The aim of the invention is achieved by the following technical scheme.

An aspect of the embodiments of the present disclosure provides a method for managing drawings based on a PDM system, for controlling a version of a drawing in a process of transferring from design to production, including: presetting a flow template from drawing design to production in a PDM system, wherein the flow template is used for carrying out version control on the drawing; in the process of transferring product design to production, ensuring the accuracy and consistency of drawing versions is important. Presetting a flow template can help normalize and automate this flow, thereby improving the accuracy of version control. First, a complete drawing version control flow template is defined in the PDM system. The process template comprises the steps of drawing design, auditing, issuing and the like. For each step, its execution details and requirements are defined explicitly. For example, the drawing design step may require a designer to upload an initial drawing, the auditing step may include specifying an auditor, and the publishing step may require confirmation of the version of the drawing being published. An automatic triggering mechanism is implemented such that when one step is completed, the system automatically triggers the next step. This can be achieved by setting a flow trigger condition, an approval mechanism and a notification mechanism. Approval and authorization mechanisms are set for each step to ensure that only authorized personnel can perform a particular step. The approval may include multiple levels of approval or a manner in which to designate the auditor. During the execution of each step, the system should record detailed information of version change, including timestamp, executive, version number, etc. This information will help track and trace the version history of the drawing. An exception handling mechanism is implemented to cope with exceptions in the flow, such as audit failed, version conflicts, etc. The system should be able to capture these anomalies and notify the relevant personnel to process. Reporting and monitoring functions are provided so that a manager can view the execution of the process at any time. These reports should include information on the current flow state, completed steps, pending steps, etc.

After receiving a drawing submitted by a user, the PDM system performs format normalization inspection on the drawing according to a preset flow template, and generates an inspection result; allowing a user to submit drawings through the PDM system. This may include uploading files, filling in relevant information, and selecting an appropriate flow template. A series of rules for format normalization checks are set in the system including, but not limited to: file format, ensuring that the format of the drawing file meets expectations (e.g., CAD file, PDF, etc.). Layer structure: check the rationality and consistency of the layers. Units and standards, ensuring that the drawings use the correct units and meet the relevant standards. Fonts and words, and checking the consistency and the readability of the fonts. Size and ratio: verifying whether the dimensions and proportions meet the design requirements. For each rule, a corresponding inspection program is designed to ensure that the inspection can be automatically performed. This may include verification using scripts, custom programs, or third party tools. An automated format normalization check step is embedded in the flow template. When the drawing is submitted, the system shall automatically call the corresponding checking program to check the format normalization. Once the inspection is complete, the system should generate detailed inspection result reports. This report may include pass inspection items, failed inspection items, and possibly repair suggestions. Identify any format normalization inconsistent problems in the inspection results and trigger the corresponding exception handling mechanism. This may include returning the drawing to the user for repair or notifying the relevant personnel for manual intervention. Only after the drawing passes the format normalization check will the system update the version control information. This helps ensure that only compliant drawings are incorporated into the versioning. And sending a notice to the user, and indicating whether the drawing passes the format normalization check. Clear feedback is provided in the notification including passing inspection items and problems that may need to be repaired. Rules and procedures for format normalization checks are periodically reviewed to ensure that they remain in compliance with the latest design criteria and organizational requirements. And carrying out necessary optimization according to user feedback and system use conditions. In the method, the PDM system can ensure that strict format normalization check is executed in the drawing transmission process, so that the accuracy and consistency of version control are improved.

After the format normalization check of the drawing passes, the PDM system calls a preconfigured PDF drawing conversion plug-in, the plug-in generates drawing files in PDF format in batches according to a drawing conversion rule preset in the PDM system, and a version number is written in attribute metadata of the generated drawing files in PDF format; a PDF drawing conversion plug-in is integrated and configured in the PDM system, so that the plug-in can work cooperatively with the PDM system. This plug-in should support batch processing and be able to perform drawing-to-PDF conversion according to predefined rules. Setting an event triggering mechanism of the PDM system, triggering an event when the format normalization check of the drawing passes, and informing the system to continue PDF conversion and version number management. A set of flexible conversion rules are set in the PDM system, so that the plug-in unit can be ensured to correctly convert the drawing file into a PDF format according to the rules. Rules should include requirements in terms of page size, layer information, color configuration, etc. And the PDM system calls a preconfigured PDF drawing conversion plug-in to convert the drawing files passing the format normalization check into PDFs in batches. This ensures consistency and universality of the drawings in the transfer process. And adding a version number field into the attribute metadata of the drawing file in the PDF format. The version number can be automatically generated by the system or specified by a user according to the requirements of an organization. The uniqueness of the version number and consistency with version control in the PDM system are ensured. In the process of converting PDF drawings, the plug-in is responsible for updating attribute metadata of the PDF files, including writing information such as version numbers, creation dates, modification dates and the like, so as to ensure that the information is available in tracking and management in the future. And establishing a detailed log recording mechanism, and recording a PDF conversion process after each drawing format normalization check passes. This helps track and troubleshoot any potential problems and provides auditing capabilities. Through the method and the device, the PDM system can realize high-efficiency PDF conversion in the drawing transmission process, and the version number is embedded into the generated file, so that the precision and traceability of version control are further improved. Specifically, the PDF drawing conversion plug-in the present application includes: an independent third-party PDF conversion tool is used for carrying out integrated calling on the PDM system; PDF conversion modules which are self-developed by PDM system suppliers are embedded into PDM system products; the PDF conversion component with an open source is secondarily developed by a PDM system developer and integrated into the PDM system; plug-in components developed based on PDF conversion SDK are in butt joint with PDM in a program interface mode; and the PDM system calls the cloud service to finish conversion through the network API. In summary, the PDF drawing conversion plug-in may be various independent modules or services, and it is critical to accurately convert a source drawing file into a PDF format, and have an adaptation capability to a PDM system, so as to implement integration and interaction between the two.

The PDM system binds the version number of the drawing file and the material version number of the ERP system by associating the version number of the generated drawing file in PDF format with the material version number of the engineering bill of materials EBOM for manufacturing the product in the ERP system; a stable integrated channel is established between the PDM system and the ERP system, so that the PDM system and the ERP system can conduct data interaction in real time or periodically. And establishing a generation rule of the material version number in the ERP system, and ensuring that the rule is consistent with the generation rule of the figure paper version number in the PDM system. This may include version format, prefix, date, etc. information. Defining rules, and associating the version number of the PDF drawing file generated in the PDM system with the material version number in the ERP system. This may be based on information such as the mapping of the drawing to the material, item number, etc. When the version number of the drawing file in the PDM system is updated, a corresponding event is triggered, and updated version number information is transmitted to the ERP system. This may be achieved by means of Web services, APIs, etc. The ERP system is ensured to be capable of receiving the drawing version number transmitted by the PDM system and associating the drawing version number with the corresponding material version number. And synchronization and matching of version numbers are realized. In the process of version number synchronization, a data consistency verification mechanism is established to ensure that the association of the version number of the graphic paper and the version number of the material is correct. An exception handling mechanism is triggered in the event of an inconsistency. Fields are added to an engineering bill of materials (EBOM) of the ERP system for storing an associated material version number. In this way, the correct version of the material can be ensured to be used when manufacturing the product. And establishing a history record mechanism, and recording detailed information associated with each version, wherein the detailed information comprises a drawing paper version number, a material version number, association time and the like. This facilitates traceability and auditing. When the version number is changed, the system should send a notification to the relevant user to ensure that the team knows the version change. Through the method and the device, the relation between the graphic paper version number and the material version number is realized between the PDM system and the ERP system, so that the correct engineering bill of materials version is ensured to be used in the product manufacturing process, and the precision and the cooperativity of version control are improved. Specifically, in the application, a PDF drawing file conversion module in a PDM system automatically generates a unique version number when generating a PDF drawing, and writes the unique version number into attribute data of the PDF drawing file; the PDM system and the ERP system integrate a version number association module, and the module can realize the binding of the version number of the PDF drawing file and the version number corresponding to the BOM of the worker Cheng Wuliao list in the ERP system; the version number association module provides an interface for the PDM system and receives the PDF drawing file version number sent by the PDM system; the version number association module inquires the version number of the EBOM in a database of the ERP system according to the version number of the file; the version number association module establishes a corresponding relation between the version number of the PDF drawing file and the version number of the engineering BOM and stores the corresponding relation in a database. When the engineering bill of materials (EBOM) in the ERP system is submitted to be released, the ERP system sends a release notice to the PDM system; after receiving the release notice, the PDM system inquires the version number of the drawing file bound with the version number of the engineering bill of materials (EBOM), and acquires the corresponding drawing file in PDF format according to the version number of the inquired drawing file; and establishing a release notification mechanism in the ERP system to ensure that when an engineering bill of materials (EBOM) is submitted to release, the ERP system can generate and send a corresponding release notification to the PDM system. Using appropriate communication protocols and API designs, it is ensured that the ERP system and PDM system can achieve efficient communication, including sending and receiving of published notifications. Setting a version number matching rule in a PDM system ensures that the version number of a drawing file associated with the version number can be found according to the version number of the EBOM submitted and released in the ERP system. After receiving the release notice, the PDM system executes inquiry operation, and finds out the version number of the drawing file associated with the version number according to the version number of the EBOM. And acquiring the corresponding PDF format drawing file from the PDM system according to the version number of the queried drawing file. This may be accomplished through an API or other data access mechanism built into the system. After the drawing file in PDF format is obtained, verification is performed to ensure that the drawing file is correctly associated with the submitted and released EBOM, including version consistency and correctness. And a notification mechanism is realized, and the operation result of acquiring the PDF drawing file is notified to related users or system components. Meanwhile, a detailed log of each operation is recorded, wherein the detailed log comprises information such as query conditions, operation time and the like. And (3) implementing an exception handling mechanism, triggering an exception notification when the drawing file version is not matched with the EBOM version or other problems occur, and performing corresponding processing, such as notifying related personnel or executing automatic repair operation. And establishing a version-associated history record which comprises drawing file version inquiry and acquisition operations triggered by each EBOM release notification so as to carry out tracing and auditing. Security during communication and data transfer is ensured, preventing unauthorized access and data leakage. And periodically verifying the consistency of version numbers in the ERP system and the PDM system, and updating according to the requirement. This helps to prevent problems due to system upgrades or configuration changes. According to the method and the device, the release notice of the engineering bill of materials (EBOM) and the acquisition of the drawing file version are realized between the ERP system and the PDM system, so that the correct drawing file version is ensured to be used in the manufacturing process of the product, and the precision and the cooperativity of version control are improved.

The PDM system takes the acquired drawing file in the PDF format as an accessory and embeds the drawing file into a data record of an engineering bill of materials (EBOM) through a data transmission interface; the PDM system sends a confirmation notice of completion of the transfer of the drawing file to the ERP system, and confirms that the drawing file is embedded into the data record of the engineering bill of materials (EBOM). In the PDM system, it is ensured that the acquired drawing file in PDF format can be attached as an attachment to a data record of an engineering bill of materials (EBOM). This requires the PDM system to support the accessory management function and to be able to embed the accessory in the EBOM data record in the data transfer interface. And designing a data transmission interface to ensure that the PDM system can embed the acquired PDF drawing file into the data record of the EBOM. This may be in a standard data transmission format such as XML or JSON. Defining rules to ensure that PDF drawing files are correctly associated with corresponding EBOM data records. This may be based on item numbers, material numbers, or other unique identifiers. After the drawing file is successfully embedded into the EBOM data record, the PDM system sends a confirmation notice of completion of transfer to the ERP system. This may be an automated process, implemented through an API or other communication mechanism. The notification mechanism is realized, so that related users or system components can know the state of completion of the transfer of the drawing file in time. Meanwhile, a detailed log of each operation is recorded, including transfer time, drawing file information and the like. In the process of transferring the drawing file, an exception handling mechanism is implemented, when a transfer failure or other problems occur, an exception notification is triggered, and corresponding processing is performed, for example, related personnel are notified or automatic repair operation is performed. Before the confirmation notification is sent, version consistency verification is carried out to ensure that the version of the drawing file embedded in the EBOM data record is consistent with the version in the PDM system. An access right control mechanism is designed to ensure that only authorized users or system components can access and modify the attachment information of the drawing file. By the method and the device, PDF drawing files are embedded and transmitted to confirm notification between the PDM system and the ERP system, so that the latest version of drawing files are correctly associated in an engineering bill of materials (EBOM), and the accuracy and reliability of version control are improved.

Further, the method further comprises the following steps: receiving a drawing file submitted by a user in a PDM system; after the received drawing file is modified, the PDM system detects the modification of the drawing file and increases the version number of the corresponding drawing file to generate a new version number; the PDM system calls a PDF drawing conversion plug-in unit which is configured in advance according to the newly generated version number, uses the modified drawing file as input, and generates a drawing file in PDF format with the new version number according to a preset drawing conversion rule; the PDM system stores PDF format drawing files of all versions and attribute data of the drawing files of each version through a preset version control function, wherein the attribute data comprises version numbers and modification time; when the engineering bill of materials (EBOM) is updated, the PDM system uses the drawing file with the PDF format of the new version number to be embedded into the data record of the EBOM, so as to update the drawing file. The PDM system has a powerful file receiving function and can receive drawing files submitted by users. This includes supporting various common drawing file formats, such as DWG, DXF, etc. When the PDM system receives the drawing files and discovers modification, the system detects the change and automatically increases the version numbers of the corresponding drawing files. This requires the PDM system to be able to identify the unique identifier of the drawing file and to effectively manage the version number. And integrating and configuring a PDF drawing conversion plug-in advance to ensure that the PDM system can call the plug-in according to the newly generated version number and convert the modified drawing file into a PDF format with a new version number. This involves ensuring the reliability, stability and compatibility of the card. And formulating clear drawing conversion rules to ensure that the PDM system can convert the drawing file into a PDF format according to preset rules. This may include provisions in page layout, layer management, font handling, etc. And by utilizing a version control function built in the PDM system, the PDF format drawing files of all versions can be stored. The version control function should also record drawing file attribute data of each version, including version number and modification time. And storing the attribute data of the drawing file in a PDM system, wherein the attribute data comprises a version number and modification time. Such records facilitate tracing and auditing the change history of the drawing documents. When an engineering bill of materials (EBOM) is updated, the PDM system should select a corresponding PDF format drawing file according to the new version number and embed the PDF format drawing file into the EBOM data record. This ensures that the drawing file used in the EBOM is always the latest version. By the method and the device, version control precision of the drawing file in the transmission process can be effectively improved, the system is ensured to track and manage changes of the drawing file, and the latest version of the drawing file is used in EBOM updating.

Further, the method further comprises the following steps: the attribute data comprises the name of the drawing, the number of the drawing and the user information of the drawing; the user information of the drawing includes: user identification of creator and modifier. And defining attribute data of the drawing file in the PDM system, wherein the attribute data comprises the name of the drawing, the number of the drawing and user information of the drawing. These attribute data will become key identifiers for version control. And introducing a user information management function to ensure that each drawing file can contain user identifications of a creator and a modifier. Thus, the change history of the drawing file can be clearly tracked, and the creator and the modifier of the specific version can be determined. For each drawing file, the PDM system should implement an automatic version number management mechanism that ensures that the version number can be incremented after each modification. Thus, the drawing files of each version can be tracked, and the sequence relation among the versions is maintained. And the built-in version control function of the PDM system is utilized to ensure that all version drawing files are stored and maintained. Each version should include attribute data of the drawing, such as name, number, and user information, to create a complete history. The auditing function is realized, and all the modification histories of the drawing files of the specific version can be traced. This includes knowing when, by whom, and the corresponding user identification information. An automatic notification and alarm mechanism is introduced, so that team members can be ensured to know the changing condition of the drawing file in time. This helps to work cooperatively, reducing potential version conflicts. Fine-grained rights management is implemented to ensure that only authorized users can make modifications to the drawing documents. In addition, a workflow is defined, so that the modification is ensured to pass through a proper approval process, and the reliability of version control is improved. The user-defined report and query functions are provided, so that a user can search detailed information of the drawing file according to the need, including names, numbers, user information and the like, and version control is better managed. And integrating a drawing file comparison tool so as to compare different versions and quickly find and solve the change difference of the drawing file. According to the method and the device, the version control precision of the drawing file in the transmission process can be improved, the integrity of attribute data is ensured, and the change history of the drawing file is fully tracked and recorded.

Further, the method further comprises the following steps: version numbers of drawing files in the PDM system and version numbers of engineering bill of materials (EBOM) of the ERP system are bound; when the ERP system needs to acquire the drawing file of the latest version of a certain material, the ERP system sends a drawing acquisition request to the PDM system, wherein the request contains the version number of the material; after the PDM system receives the request, inquiring the version number of the latest version of the bound drawing file in the database according to the version number of the material in the request; after the PDM system acquires the corresponding drawing file of the latest version, the acquired drawing file is returned to the ERP system in an attachment mode. In the PDM system, the version number of the drawing file is ensured to be bound with the version number of an engineering bill of materials (EBOM) of the ERP system. In this way, the relationship between versions can be established, so that the ERP system can accurately acquire drawing files associated with the specific material version. When the ERP system needs to acquire the latest version drawing file of a certain material, the ERP system sends a drawing acquisition request to the PDM system. The request should contain the version number of the corresponding material to ensure that the drawing file of the correct version is obtained. After receiving the request of the ERP system, the PDM system analyzes the request and extracts the version number information of the materials. And according to the material version number in the request, inquiring the version number of the drawing file of the latest version associated with the material version in a database of the PDM system. After the PDM system obtains the corresponding drawing file of the latest version, the drawing file is packaged in an attachment mode, and the drawing file is ready to be returned to the ERP system. And returning the acquired drawing file to the ERP system in an attachment form, so as to ensure the integrity and accuracy of the file. Standard data exchange formats may be used, such as PDF or other common drawing file formats. And recording request and response information obtained by each drawing file in the PDM system, wherein the request information comprises request time, request material version number, returned drawing file version number and the like, so that subsequent audit and tracking can be realized. An exception handling mechanism is implemented to handle errors that may occur, such as failure to find a drawing file of a corresponding version or a request format error. Ensuring the stability and reliability of the system. By the technical scheme, integration of the drawing file and the ERP system can be realized, and version control precision in the transmission process is ensured. The ERP system can accurately acquire the latest version drawing file associated with the material version number according to the material version number, so that the collaborative work efficiency is improved.

Further, the ERP system sends a request for acquiring the drawing file to the PDM system, and the PDM system returns the acquired drawing file to the ERP system, which are transmitted through a standard data exchange interface pre-integrated and configured by the PDM system and the ERP system. Standard data exchange interfaces are preconfigured in the PDM system and the ERP system, so that the two systems can effectively communicate with each other. This may include defining data formats, communication protocols, authentication mechanisms, etc. And designing a standard data exchange interface to support the request and return of the drawing file. This may involve RESTfulAPI, SOAP protocols or other standard communication protocols, with the appropriate interface design being selected according to the requirements and compatibility of the system. And determining a request format required by the ERP system when sending a request for acquiring the drawing file to the PDM system, wherein the request format comprises key information such as a material version number and the like. Ensuring that the request format is consistent with the interface specification to avoid data transmission errors. And determining a response format of the PDM system when returning the drawing file to the ERP system, wherein the response format comprises an attachment form or other suitable data structure of the drawing file. Also, the response format is ensured to conform to the interface specification to ensure proper data transmission. And a data encryption and authentication mechanism is introduced to ensure the security of data in the process of transmitting the drawing file. Secure Sockets Layer (SSL) or other encryption protocols are used while ensuring that only authorized users or systems can access the interface. According to performance and security requirements, a suitable transmission protocol is selected. HTTPS is generally a safe and viable option to ensure that data is properly protected during transmission. And in the interface design, abnormal conditions such as network errors, invalid requests and the like are considered, and a corresponding abnormal processing mechanism is realized. This helps to discover and solve potential problems in time, improving the stability of the system. The interface request and response details are recorded, including time stamp, request parameters, response status, etc. By monitoring the log of the interface, potential problems can be found out in time and adjusted. And providing a detailed interface document to ensure that a developer can clearly understand the use method and parameters of the interface. At the same time, it is contemplated that interface versioning is implemented so as to maintain backward compatibility at the time of update. After the integrated configuration is completed, comprehensive testing and verification are performed, so that the data exchange interface can work normally in an actual scene. This includes modeling the requests and responses in different situations, ensuring robustness and reliability of the system. By using the standard data exchange interface, the efficient transfer of drawing files between the PDM system and the ERP system can be realized, thereby improving the precision of version control and the synergy of the whole system. Further, a standard data interface for transmitting drawing files between the PDM system and the ERP system adopts a Web service interface facing a service architecture SOA; the Web service interface is predefined by the PDM system and the ERP system. The design concept of Service Oriented Architecture (SOA) is adopted, and the transmission of drawing files is realized through the combination of services. The flexibility and loose coupling of the SOA helps to improve maintainability and scalability of the system. Standard Web service interfaces are predefined in the PDM system and the ERP system, so that the two systems can understand and interpret the data exchange format together. The interface is defined using WSDL (Web Services Description Language) or other suitable description language. The data exchange format of the drawing file transfer, such as XML or JSON, is determined. Through the standardized data exchange format, the consistency and the resolvable property of the data are ensured. The function of transmitting the drawing file is definitely defined in the interface definition, and the function comprises operations of requesting the drawing file, returning the drawing file and the like. Ensuring that the function of the interface is consistent with the business requirements. And data transmission is performed by using a protocol based on HTTP or HTTPS, so that data security transmission in a Web service interface is ensured. The HTTPS protocol provides encryption and authentication, enhancing the security of data transmission. An asynchronous transmission mechanism is considered to be implemented so that the system can process requests and responses more flexibly in the case of processing a large number of drawing files or a large network delay. And an identity verification and authorization mechanism is implemented at the interface level, so that only authorized systems or users can access the delivery interface of the drawing file. Standard authentication protocols such as OAuth or JWT may be used. A good exception handling mechanism is realized, and clear error codes and error information are defined so as to discover and solve potential problems in time. Version control is considered in the interface definition to ensure backward compatibility when the interface is upgraded. Version numbers are used to identify different versions of the interface. After the integrated configuration is completed, comprehensive testing and verification are performed, so that the Web service interface can work normally under different scenes, including verification in the aspects of safety, availability, performance and the like. By using the Web service interface based on the SOA, the efficient transfer of drawing files between the PDM system and the ERP system can be realized, the precision of version control is improved, and meanwhile, the loose coupling and the expandability of the system are maintained.

Further, the flow template comprises a drawing design step, a drawing auditing step and a drawing publishing step; a drawing design step, which is used for drawing a drawing file; a drawing auditing step, which is used for evaluating the drawing file; and the drawing issuing step is used for formally issuing the drawing file passing the verification. Defining a complete flow template in a PDM system, wherein the complete flow template comprises a drawing design step, a drawing auditing step and a drawing publishing step. Ensuring that each step has its tasks and associated versioning operations well defined. Aiming at the drawing design step, a drawing tool of the drawing file is provided, so that a designer can effectively create and edit the drawing file. Versions generated during the design phase of the drawing should be identified and ensure compliance with the version control of the flow templates. And a drawing auditing step is introduced to ensure that drawing files are audited after the design is completed. Define approval personnel and approval flows, and ensure that the approval results are relevant to version control. If the audit is not passed, the design steps can be returned to for modification. And after the drawing verification is passed, entering a drawing publishing step. The step is responsible for formally publishing the drawing files which pass the verification. The release of the version of the drawing file is ensured to be correctly identified so as to facilitate subsequent use and tracing. An automatic mechanism is introduced into the whole flow, so that the continuity and timeliness of the flow are ensured. Including automatically reminding related personnel to perform design, approval and release operations to prevent flow lag. Fine-grained entitlement control is implemented in each step, ensuring that only authorized users can perform the corresponding operations. For example, only the designer can edit the drawing, only the auditor has authority to approve in the auditing step, and so on. In each key step, the version of the drawing file is explicitly identified. This may be accomplished by adding a version number, date stamp, or other identification means to the drawing file. The result of each approval and relevant information including the approver, the approval time, etc. are recorded. This helps audit the history of drawing documents, tracking the flow and decision of the approval. The drawing publishing step is integrated into the ERP system, so that the formally published drawing file can be used in the whole enterprise. The ERP system can acquire the latest drawing file according to the version information of the PDM system. By the method and the device, a complete drawing file transfer flow can be established, version control precision in the transfer process is ensured, and strict control of approval and release is provided.

Further, the format normalization check comprises checking the name of the drawing, the number of the drawing and the file format of the drawing; checking whether the name of the drawing accords with the naming standard; checking whether the number of the drawing accords with the number rule; and checking whether the file format of the drawing is a compatible drawing file format. And implementing an automation tool or script, and checking whether the name of the drawing file meets the naming standards. This may include rules in terms of length, character type, special character usage, etc. The drawing names are ensured to be clear and easy to understand, and the naming standards in the organization are met. And designing and implementing an algorithm or rule, and checking whether the drawing numbers accord with the numbering rule. This may include rules in terms of prefix, length, character type, uniqueness, etc. The uniqueness of the drawing numbers is guaranteed, and the consistent numbering specifications are followed. And using a third party library or tool to check whether the format of the drawing file accords with the compatible drawing file format. This may include checking file extensions, file header information, etc. Ensure that the drawing file can be normally opened and processed by related software. And introducing a custom rule according to the specific requirements of an organization to check whether the drawing names and numbers meet the service specifications. This may be accomplished by regular expressions or other custom rules. Integrating an automatic checking tool ensures that format normalization checking is automatically performed in the flow of drawing transfer. This may be achieved through integration with a PDM system or flow management tool so that normalization checks can be performed at each stage. And introducing a real-time feedback mechanism into the format normalization check to timely inform a user whether the drawing file meets the specification. At the same time, repair advice is provided to assist the user in correcting portions that do not meet the specifications. Format normalization checks are integrated into the drawing design tool, if possible. Thus, a designer can obtain real-time normalization feedback when creating and editing the drawing file, and the workload of subsequent repair is reduced. And carrying out format normalization check before submitting and approving the drawing files, so as to ensure that only drawing files meeting the specification can enter the next stage. This helps to discover and correct potential formatting problems in advance. By the method and the device, version control precision of the drawing file in the transmission process can be effectively improved, naming, numbering and format of the drawing file are ensured to accord with specifications, and therefore problems caused by non-normative are reduced.

Further, the drawing conversion rule comprises resolution and color mode of the PDF file; the resolution of the PDF file is used for setting the definition of the image of the output PDF file; the color mode of the PDF file is used for setting the color mode of the output PDF file. Rules and standards are formulated to define the resolution requirements of the PDF file. This includes setting the resolution of the image and text to ensure that the output PDF file image definition meets design and inspection requirements. Consider different applications and different resolutions that may be required by the output device. The color pattern rules of the PDF file are determined, including color space (e.g., RGB, CMYK, etc.) and color configuration. According to the organization standard or project requirement, the color mode is definitely specified so as to ensure that the output PDF files are consistent in different scenes. And integrating an automatic drawing file conversion tool, and supporting automatic setting of resolution and color modes of the PDF file according to rules. This may be achieved through integration with a flow management tool or PDM system, ensuring that rules are automatically applied during the conversion process. The introduction of adaptation rules is considered to dynamically adjust resolution according to the specific drawing content and application. For example, higher resolution is used in drawing areas with a lot of detail, while lower resolution is used in text or simple graphic areas to balance sharpness and file size. Default drawing conversion rules are determined for application without special requirements. This helps to ensure that most of the drawing documents can be converted according to standard rules, improving the working efficiency. Preview and adjustment tools are provided that allow a user to preview the output results and make the necessary adjustments prior to conversion. This helps the user check whether the resolution and color pattern meet his expectations before conversion. And carrying out version control identification on the generated PDF files in the conversion process, and ensuring that each output file has clear version information. This helps track and manage PDF files of different versions. According to the method and the device, the resolution and the color mode of the PDF file can be effectively controlled in the transmission process of the drawing file, and the conversion rule can be flexibly adjusted according to the requirement. Another aspect of the embodiments of the present disclosure further provides a system based on the PDM system-based drawing management method of the present disclosure, for version control of a drawing in a design-to-production transfer process, including: the flow template module 210 designs and implements a flow template covering various stages from drawing design to production. Version control rules are defined explicitly at each stage, including when to upgrade the version, who has permission to make the version change, etc. And ensuring that each drawing is subjected to version control according to a specified flow. And the format checking module is developed and used for checking the normalization of the drawing according to a preset flow template. This includes ensuring that the drawing complies with certain formats, standards and design specifications. Drawings that fail the inspection should be rejected or returned to the corresponding design phase for revision. The PDF conversion module is introduced and is responsible for converting the drawing passing the format check into the PDF format. During the conversion process, a unique version number is generated for each PDF file to ensure version uniqueness and traceability. And the data interface module is used for binding the version number of the PDF drawing with the material version number of the ERP system. This ensures consistency between the version of the drawing and the version of the material so that the material used in the production process corresponds to the design drawing. And the request processing module is used for realizing the request processing module and is responsible for receiving the drawing acquisition request from the ERP system. The module should be able to parse version information in the request and return drawing files of the corresponding version. Before returning to the drawing, additional verification can be performed to ensure the validity and safety of the request. And the data exchange interface module is introduced to carry out drawing file transmission with the ERP system. And a security protocol and a data encryption mechanism are used for ensuring the security of the drawing file in the transmission process. Meanwhile, a detailed transmission log is maintained so as to track and audit the transmission history of the drawing files.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

1. in the PDM system, a flow template from design to production is preset, and the method comprises the steps of drawing design, auditing, issuing and the like. In the technology, the system can automatically perform design normalization check according to the preset flow templates, so that the execution of each flow step is ensured to meet the standard, the system can automatically control the execution of the flow, and the gradual progress is ensured according to the design specification, so that the execution of each step is automatically controlled by the system by establishing a preset flow from design to production in the system, and the control precision of the flow is improved.

2. After receiving a drawing submitted by a user, the system performs format normalization check through a preset flow template, technically, the system may use a series of algorithms and rules to check the name, number and file format of the drawing, automatically detect the drawing which does not meet the specification, filter the drawing, prevent the drawing from entering the subsequent flow, and when the drawing does not meet the specification, the system may notify the user through an error feedback mechanism so as to correct in time, which can be realized through a check result or notification message generated by the system, thereby improving the control precision of the manufacturing process.

3. By integrating with the ERP system, the association and binding relationship between the drawing version and the material version can be established technically, which may involve setting up a relational database in the system, wherein the mapping relationship between the drawing version number and the material version number is stored. In this way, the change of any one party can be timely fed back to the other party, once the engineering bill of materials (EBOM) in the ERP system is changed, the system can rapidly detect the change through a real-time synchronization mechanism and trigger a related flow, and the control precision of production is improved possibly depending on an event triggering mechanism, message transmission or other real-time communication modes.

Drawings

The present specification will be further described by way of exemplary embodiments, which will be described in detail by way of the accompanying drawings. The embodiments are not limiting, in which like numerals represent like structures, wherein:

FIG. 1 is an exemplary flow chart of a method of managing drawings based on a PDM system according to some embodiments of the present description;

FIG. 2 is an exemplary block diagram of a drawing management system utilizing a PDM system according to some embodiments of the present description;

Fig. 3 is a schematic diagram of logic shown in accordance with some embodiments of the present description.

Detailed Description

In order to more clearly illustrate the technical solutions of the embodiments of the present specification, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is apparent that the drawings in the following description are only some examples or embodiments of the present specification, and it is possible for those of ordinary skill in the art to apply the present specification to other similar situations according to the drawings without inventive effort. Unless otherwise apparent from the context of the language or otherwise specified, like reference numerals in the figures refer to like structures or operations.

The method and system provided in the embodiments of the present specification are described in detail below with reference to the accompanying drawings. FIG. 1 is an exemplary flow chart of a PDM system based drawing management method according to some embodiments of the present description, as shown in FIG. 1, for controlling the version of a drawing in a design to production transfer process, comprising: s110, presetting a drawing design to a production flow template in a PDM system, wherein the flow template is used for carrying out version control on the drawing; s120, after receiving a drawing submitted by a user, the PDM system performs format normalization inspection on the drawing according to a preset flow template, and generates an inspection result; s130, after the format normalization check of the drawing passes, the PDM system calls a preconfigured PDF drawing conversion plug-in, and the plug-in generates drawing files in PDF format in batches according to a drawing conversion rule preset in the PDM system, and writes version numbers in attribute metadata of the generated drawing files in PDF format; s140, the PDM system binds the version number of the drawing file and the material version number of the ERP system by associating the version number of the generated drawing file in PDF format with the material version number of the engineering bill of materials EBOM for manufacturing the product in the ERP system; s150, when the engineering bill of materials (EBOM) in the ERP system is submitted to be released, the ERP system sends a release notice to the PDM system; after receiving the release notice, the PDM system inquires the version number of the drawing file bound with the version number of the engineering bill of materials (EBOM), and acquires the corresponding drawing file in PDF format according to the version number of the inquired drawing file; s160, the PDM system takes the acquired drawing file in the PDF format as an accessory, and embeds the drawing file into a data record of an engineering bill of materials (EBOM) through a data transmission interface; the PDM system sends a confirmation notice of completion of the transfer of the drawing file to the ERP system, and confirms that the drawing file is embedded into the data record of the engineering bill of materials (EBOM).

Specifically, the application provides a technical scheme for managing engineering drawings by using a Product Data Management (PDM) system, and aims to improve the version control precision of the engineering drawings in the process of transferring from design to production. Comprising the following steps: and presetting a design-to-production flow template of the engineering drawing in the PDM system, wherein the flow template comprises rules such as format normalization check and the like for executing version control on the drawing. After receiving a drawing file submitted by a user, the PDM system automatically starts a flow template, performs format normalization inspection on the drawing, and generates an inspection result. After the drawing format check is passed, the PDM system automatically calls a preset PDF drawing conversion plug-in, generates drawing files in PDF format in batches according to configuration rules in the PDM system, and writes unique version numbers in attribute metadata of the PDF files. The PDM system enables the version number of each PDF drawing file to correspond to the version number of an engineering BOM (namely an engineering bill of materials (EBOM) for product manufacturing) in the ERP system through an association mechanism so as to achieve binding of the drawing version and the material version. When the EBOM is submitted to be released in the ERP system, the ERP system sends a release notification to the PDM system. After the PDM system receives the notification, the latest image paper file and the version number thereof which are bound with the EBOM version number are automatically inquired. The PDM system acquires the PDF drawing file corresponding to the latest version, and embeds the PDF drawing file serving as an accessory into the data record of the EBOM through the interface to finish the transfer of the drawing. The PDM system sends a confirmation notice to the ERP system to confirm that the latest image paper file has been successfully embedded into the EBOM data record. According to the method and the device, collaborative linkage of the PDM system and the ERP system is realized, automatic transmission of correct versions of engineering drawings is ensured through control of flow and version binding, and drawing management precision and efficiency in the complex product design change process are effectively improved.

Specifically, the method further comprises the following steps: and after receiving the engineering drawing file submitted by the user, the PDM system stores the engineering drawing file in an engineering document library. After the submitted drawing file is modified by a user, the PDM system can detect the change of the drawing file and automatically trigger the version control processing flow of the drawing file. The PDM system automatically increases the version number of the drawing file which is detected to be modified, and generates a new unique version number. The PDM system automatically calls a preconfigured PDF drawing conversion plug-in according to the newly generated version number, uses the modified latest drawing file as input, generates a corresponding PDF format drawing file according to a preset conversion rule, and writes a new version number in attribute data of the PDF file. The PDM system stores PDF format drawing files of all historical versions and detailed attribute data of each version file through a preset version control function, wherein the detailed attribute data comprises information such as version numbers and file modification time. When the engineering BOM (i.e., engineering bill of materials EBOM) is submitted for updating in the ERP system, the ERP system sends a notification to the PDM system requesting to obtain the latest drawing version. After the PDM system receives the notification, automatically inquiring the latest PDF drawing file and the version number thereof which are currently bound with the EBOM version, and embedding the latest PDF drawing file into the EBOM data record as an accessory to finish updating the drawing. According to the method and the device, automatic detection of the change of the drawing file and generation of the new version by the PDM system are realized, and the accuracy and the reliability of engineering document change management are improved through version increment and traceable historical version storage.

Specifically, the method further comprises the following steps: and after receiving the engineering drawing file submitted by the user, the PDM system stores the engineering drawing file in an engineering document library. After the submitted drawing file is modified by a user, the PDM system can detect the change of the drawing file and automatically trigger the version control processing flow of the drawing file. The PDM system automatically increases the version number of the drawing file which is detected to be modified, and generates a new unique version number. And the PDM system automatically calls a preconfigured PDF drawing conversion plug-in according to the new version number, generates a corresponding PDF format drawing file by using the modified latest drawing file, and writes the new version number in attribute data of the PDF file. The attribute data of the PDF format drawing file comprises: the name of the drawing, the number of the drawing, the creator user identification of the drawing, and the latest modifier user identification of the drawing. The PDM system stores PDF format drawing files of all historical versions and detailed attribute data of each version file through a preset version control function. When the engineering BOM is updated, the PDM system inquires the latest PDF drawing version which is currently bound with the BOM version and embeds the latest PDF drawing version into a data record of the BOM as an accessory to finish updating the drawing. According to the technical scheme, traceability and data reliability of engineering drawings in the design change process are improved through version control and attribute data storage. Specifically, the method further comprises the following steps: in a PDM system, each engineering drawing file in PDF format corresponds to a unique version number. And binding the version number of the drawing file in the PDM system with the version number of an engineering bill of materials (EBOM) of the ERP system. When the ERP system needs to acquire the latest drawing file of a certain material, a request for acquiring the drawing file can be sent to the PDM system, wherein the request contains the required material and version number. After the PDM system receives the request, according to the version number of the material in the request, the latest image paper file and the version number of the material which are currently bound are inquired in the database. After the PDM system acquires the corresponding drawing file of the latest version, the drawing file is returned to the ERP system in an attachment form. And after receiving the latest drawing file, the ERP system completes synchronous updating of the drawing. According to the technical scheme, through a drawing version binding and synchronous request mechanism of the PDM and the ERP, timely transmission of the correct version of the engineering drawing is ensured, and the efficiency of product design and manufacturing coordination is improved.

Specifically, the method further comprises the following steps: in a PDM system, each engineering drawing file in PDF format corresponds to a unique version number. The version number of the drawing file in the PDM system is bound with the version number of the Engineering BOM (EBOM) of the ERP system. When the ERP system needs to acquire the latest drawing file of a certain material, a request for acquiring the drawing file is sent to the PDM system through a standard data exchange interface which is configured in a pre-integrated mode, and the request comprises the required material and version number. After the PDM system receives the request, according to the version number of the material in the request, the latest image paper file and the version number of the material which are currently bound are inquired in the database. After the PDM system obtains the corresponding drawing file of the latest version, the drawing file is returned to the ERP system in an accessory form through a standard data exchange interface. And after receiving the latest drawing file, the ERP system completes synchronous updating of the drawing. According to the technical scheme, the PDM system and the ERP system are tightly integrated through the standardized interface, automatic and efficient transfer of correct versions of engineering drawings is ensured, and the efficiency of product design and manufacturing coordination is improved.

Specifically, the method further comprises the following steps: in a PDM system, each engineering drawing file in PDF format corresponds to a unique version number. The version number of the drawing file in the PDM system is bound with the version number of the Engineering BOM (EBOM) of the ERP system. When the ERP system needs to acquire the drawing file, a request is sent to the PDM system through a Web service interface facing a service architecture (SOA). The Web service interface for transmitting the drawing file between the PDM system and the ERP system is predefined so as to realize seamless integration of the two systems. After receiving the request for acquiring the drawing file, the PDM system inquires and acquires the latest version of the drawing file. The PDM system returns the latest image paper file to the ERP system as an attachment through the Web service interface. And after receiving the latest drawing file, the ERP system completes synchronous updating. According to the technical scheme, the extensible and standardized SOA and Web service interface are adopted, so that flexible integration of the PDM system and the ERP system is realized, and automatic and efficient transfer of a correct version of a drawing is ensured.

Specifically, the method further comprises the following steps: and presetting a design-to-release flow template of the engineering drawing in the PDM system for executing version control of the drawing. The flow template comprises a drawing design step, a drawing auditing step and a drawing publishing step. The drawing design step is used for drawing files by engineers. The drawing auditing step is used for a project manager or expert to review the drawing file. The drawing issuing step is used for formally issuing the drawing file passing the verification. The PDM system executes functions such as format check, version control, PDF conversion and the like on the drawing at each step according to the flow template. And binding the final qualified PDF drawing file with a BOM version of the ERP system to ensure the synchronization of design change. According to the technical scheme, the process template is preset, the design of the drawing is guided to the overall process of release, and the quality and traceability of engineering documents are effectively ensured.

Specifically, the method further comprises the following steps: and presetting a design-to-release flow template of the engineering drawing in the PDM system. The flow template comprises the steps of drawing design, auditing and publishing. At each step, the PDM system performs a format normalization check on the drawing file. The format normalization check includes: (1) checking whether the naming of the drawing file meets the specification; (2) Checking whether the number of the drawing file accords with a set number rule; (3) And checking whether the file format of the drawing file is a compatible drawing file format. Only the drawing files passing the inspection can enter the subsequent version control and release processes. And binding the finally qualified drawing file with a BOM version of the ERP system, and ensuring the drawing quality and consistency. According to the technical scheme, through formatting inspection of the drawing files, the quality of engineering documents is ensured, guarantees are provided for follow-up version control and release processes, and circulation of low-quality drawing files is avoided.

Specifically, the method further comprises the following steps: and presetting a design-to-release flow template of the engineering drawing in the PDM system. The flow template comprises the steps of drawing design, auditing and publishing. After the drawing verification is passed, the PDM system can automatically convert the drawing into a drawing file in a PDF format. The conversion rule of the PDF drawing file comprises: and setting the image resolution of the PDF file, and controlling the definition of the quality of the PDF drawing. The color mode of the PDF file, such as RGB or CMYK, is set for satisfying the printing requirements. And binding the high-quality PDF drawing file generated according to the conversion rule with a BOM version of the ERP system. And finally, the correct and timely transmission of the PDF drawing with the design changed is realized. According to the technical scheme, the PDF drawing file with good printing quality and reliability is automatically generated by setting the rule of PDF conversion, so that the consistency of engineering documents in the process of designing to production is ensured. FIG. 2 is an exemplary block diagram of a drawing management system utilizing a PDM system according to some embodiments of the present specification, as shown in FIG. 2, a drawing management system 200 utilizing a PDM system for performing a PDM system based drawing management method of the present application, by combining a flow template, a format check, a PDF conversion, a data interface, a request processing and a data exchange interface module 260, enables efficient management and version control of drawing design into a production process, comprising: the process template module 210 performs version control on the drawing according to a process template from the preset drawing design to the production. Presetting a flow template, including links such as design, checking, auditing, publishing and the like. And each link is associated with version information, so that the modification of the drawing in different links can be accurately recorded. The format checking module 220 is configured to perform format normalization checking on the drawing according to the flow template; ensuring that the drawing meets the preset format requirements, including size, labeling, fonts and the like. Feedback is provided when the format is out of specification for timely correction. The PDF conversion module 230 is configured to convert the checked drawing into a PDF format and generate a version number; and the drawing is automatically converted into PDF, so that cross-platform visibility is ensured. Version numbers are automatically generated and embedded in PDF attributes, so that the tracing and management are facilitated. The data interface module 240 is configured to bind a version number of the PDF drawing with a material version number of the ERP system; and consistency of the drawing version and the material version is ensured, and information inconsistency is avoided. And realizing data interaction between the PDM system and the ERP system. The request processing module 250 is configured to receive a drawing obtaining request of the ERP system, and return a corresponding PDF format drawing file; and processing a drawing acquisition request initiated by the ERP system. And returning to the corresponding PDF drawing file according to the requested drawing version. The data exchange interface module 260 is configured to perform drawing file transmission with the ERP system. The safe and rapid transmission of the drawing file is realized.

Specifically, a data exchange log is provided for tracing back the transmission history. And (3) flow design: and the designer performs drawing design according to a preset flow template. And (5) checking a format: the drawings pass through the format check module 220 to ensure compliance with the specifications. PDF conversion, the checked drawing is converted into PDF by the PDF conversion module 230, and a version number is generated. And the data interface, the version number and the material version number of the ERP system are bound. And (4) request processing, namely receiving a drawing acquisition request of the ERP system and returning a PDF drawing of a corresponding version. And the data exchange interface is used for transmitting the drawing file with the ERP system. And combining the process template and version number generation to ensure the version control precision of the drawing in the whole process from design to production. The drawing format is normalized by the format checking module 220, so that the drawing quality is improved. And the PDF conversion module 230 is utilized to realize automatic conversion from the drawing to PDF, so that manual operation is reduced. Through the data interface and the data exchange interface module 260, efficient integration with the ERP system is realized, and data consistency is ensured. And the request processing module 250 is provided to realize seamless connection between the ERP system and the drawing management system and improve the response speed. A drawing management system utilizing a PDM system aims to improve the version control precision of drawing files in the transmission process. The cooperation of the modules makes the whole process from drawing design to production more efficient, standard and controllable.

Fig. 3 is a logic schematic diagram according to some embodiments of the present disclosure, as shown in fig. 3, in a specific embodiment of the present application, as a requirement of an engineering drawing in a design-to-production transmission process increases continuously, the present innovation aims at realizing automation by optimizing design-to-production engineering drawing circulation and using a PDM system as a platform, and assisting with PDF conversion plug-in, so as to solve technical problems of design drawing version control and automatic conversion. According to the scheme, through design flow, PDF automatic generation and version control, an efficient, safe and automatic drawing circulation process is realized. The current design drawing transmission has the tedious work of manual printing or conversion, and simultaneously the PDM system is not safe enough for non-technical personnel. In order to solve the problems, a scheme for automatically generating PDF drawings through the flow audit of a PDM system is provided. And setting a drawing auditing and archiving flow based on secondary development of the PDM system. After the designer finishes the design, submitting the auditing, and after the auditing personnel finishes the auditing, the process goes to an archiving and unpublished state. And automatically triggering a drawing conversion PDF plug-in, and creating PDF drawing conversion tasks in batches. The plug-in automatically completes PDF drawing conversion, and the drawing is imported into a folder corresponding to the PDM. And (3) corresponding the materials and the material versions to the current drawing and the model, and automatically filling the version numbers of the model drawing into the generated PDF drawing through the system. In a PDM system, the correctness and timeliness of the drawing in the whole flow are ensured through file version management. The system compares whether the PDF drawing and the version on the material are consistent, and ensures the consistency of the version. And after the PDF drawing is generated, submitting the flow to a release state. The system binds the PDF drawing with the version number of the material, matches the material and transmits the material to the ERP system. The production, manufacture and purchase can inquire the corresponding PDF drawing through the material coding in the ERP. Through authority management of the PDM system, only authorized personnel can access the drawing and related data, and confidentiality of the design model drawing is enhanced. And establishing drawing auditing and archiving processes in the PDM system, wherein the processes comprise designing, checking, auditing, formally publishing, not throwing, publishing, applying for changing and the like. And triggering the plug-in to automatically generate the PDF drawing in the stage of submitting and releasing the non-throwing through the audit. And storing the completed drawing into a folder corresponding to the PDM system, and covering codes and versions on the materials into attributes corresponding to PDF. And inquiring the corresponding PDF drawing file through the material codes and the version numbers in the related layers of the model, so that the version change management of the drawing is realized. When the drawing is changed, the system automatically replaces the version number in a running mode, and automatically generates a new PDF drawing to cover the old drawing by checking to release the non-polished drawing. The workload of manual drawing conversion is reduced. And the efficiency and accuracy of drawing transmission are improved. The version control of the drawing and the materials is enhanced, and the drawing seen by the production and manufacture is ensured to be the latest version. The confidentiality of the drawing is improved, and only authorized personnel can access sensitive data through rights management. PDF drawing schemes are automatically generated through PDM system flow auditing, so that the problems existing in engineering drawing circulation from design to production are successfully solved, and efficient, safe and automatic drawing management is realized. The scheme greatly improves the efficiency of drawing transmission, reduces the manual work load, and ensures that the latest version of drawing is always used in production, manufacture and purchase.

Claims

1. A drawing management method based on a PDM system is used for version control of drawings in the process of design to production transfer, and is characterized in that:

presetting a flow template from drawing design to production in a PDM system, wherein the flow template is used for carrying out version control on the drawing;

after receiving a drawing submitted by a user, the PDM system performs format normalization inspection on the drawing according to a preset flow template, and generates an inspection result;

after the format normalization check of the drawing passes, the PDM system calls a preconfigured PDF drawing conversion plug-in, the plug-in generates drawing files in PDF format in batches according to a drawing conversion rule preset in the PDM system, and a version number is written in attribute metadata of the generated drawing files in PDF format;

the PDM system binds the version number of the drawing file and the material version number of the ERP system by associating the version number of the generated drawing file in PDF format with the material version number of the engineering bill of materials EBOM for manufacturing the product in the ERP system;

when the engineering bill of materials (EBOM) in the ERP system is submitted to be released, the ERP system sends a release notice to the PDM system;

after receiving the release notice, the PDM system inquires the version number of the drawing file bound with the version number of the engineering bill of materials (EBOM), and acquires the corresponding drawing file in PDF format according to the version number of the inquired drawing file;

The PDM system takes the acquired drawing file in the PDF format as an accessory and embeds the drawing file into a data record of an engineering bill of materials (EBOM) through a data transmission interface;

the PDM system sends a confirmation notice of completion of the transfer of the drawing file to the ERP system, and confirms that the drawing file is embedded into the data record of the engineering bill of materials (EBOM).

2. The PDM system-based drawing management method according to claim 1, wherein:

further comprises:

receiving a drawing file submitted by a user in a PDM system;

after the received drawing file is modified, the PDM system detects the modification of the drawing file and increases the version number of the corresponding drawing file to generate a new version number;

the PDM system calls a PDF drawing conversion plug-in unit which is configured in advance according to the newly generated version number, uses the modified drawing file as input, and generates a drawing file in PDF format with the new version number according to a preset drawing conversion rule;

the PDM system stores PDF format drawing files of all versions and attribute data of the drawing files of each version through a preset version control function, wherein the attribute data comprises version numbers and modification time;

when the engineering bill of materials (EBOM) is updated, the PDM system uses the drawing file with the PDF format of the new version number to be embedded into the data record of the EBOM, so as to update the drawing file.

3. The PDM system-based drawing management method according to claim 2, wherein:

further comprises:

the attribute data includes: the name of the drawing, the number of the drawing and the user information of the drawing;

the user information of the drawing includes: user identification of creator and modifier.

4. The PDM system-based drawing management method according to claim 2, wherein:

further comprises:

version numbers of drawing files in the PDM system and version numbers of engineering bill of materials (EBOM) of the ERP system are bound;

when the ERP system needs to acquire the drawing file of the latest version of a certain material, the ERP system sends a drawing acquisition request to the PDM system, wherein the request contains the version number of the material;

after the PDM system receives the request, inquiring the version number of the latest version of the bound drawing file in the database according to the version number of the material in the request;

after the PDM system acquires the corresponding drawing file of the latest version, the acquired drawing file is returned to the ERP system in an attachment mode.

5. The PDM system-based drawing management method according to claim 4, wherein:

further comprises:

the ERP system sends a request for acquiring the drawing file to the PDM system, and the PDM system returns the acquired drawing file to the ERP system, which are transmitted through a standard data exchange interface pre-integrated and configured by the PDM system and the ERP system.

6. The PDM system-based drawing management method according to claim 5, wherein:

further comprises:

the standard data interface for transmitting the drawing file between the PDM system and the ERP system adopts a Web service interface facing the service architecture SOA;

the Web service interface is predefined by the PDM system and the ERP system.

7. The PDM system-based drawing management method according to claim 1, wherein:

further comprises:

the flow template comprises a drawing design step, a drawing auditing step and a drawing publishing step;

a drawing design step, which is used for drawing a drawing file;

a drawing auditing step, which is used for evaluating the drawing file;

and the drawing issuing step is used for formally issuing the drawing file passing the verification.

8. The PDM system-based drawing management method according to claim 1, wherein:

further comprises:

the format normalization check comprises checking the name of the drawing, the number of the drawing and the file format of the drawing;

checking whether the name of the drawing accords with the naming standard;

checking whether the number of the drawing accords with the number rule;

and checking whether the file format of the drawing is a compatible drawing file format.

9. The PDM system-based drawing management method according to claim 1, wherein:

Further comprises:

the drawing conversion rule comprises resolution and color mode of PDF files;

the resolution of the PDF file is used for setting the definition of the image of the output PDF file;

the color mode of the PDF file is used for setting the color mode of the output PDF file.

10. A system based on the PDM system-based drawing management method according to any one of claims 1 to 9, for version control of drawings in a design-to-production transfer process, characterized in that:

the flow template module is used for designing a flow template to be produced according to a preset drawing and carrying out version control on the drawing;

the format checking module is used for checking the format normalization of the drawing according to the flow template;

the PDF conversion module is used for converting the checked drawing into a PDF format and generating a version number;

the data interface module is used for binding the version number of the PDF drawing with the material version number of the ERP system;

the request processing module is used for receiving a drawing acquisition request of the ERP system and returning a corresponding drawing file in a PDF format;

and the data exchange interface module is used for transmitting the drawing file with the ERP system.