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Research and implementation of a unified manufacturing resource management platform supporting collaborative process planning


at present, many enterprise process planning systems are based on fixed manufacturing resources, and it is difficult to adapt to the dynamic characteristics of manufacturing resources that change at any time. At the same time, under the traditional manufacturing mode, the enterprise manufacturing resource model is based on various stages, departments Each computer application subsystem is formulated according to the requirements of manufacturing resource information, and establishes mutually independent manufacturing resource models and databases, resulting in inconsistent manufacturing resources and a large amount of data redundancy, which can not effectively support the collaboration between process design and other production activities. Therefore, this paper studies the manufacturing resource management supporting collaborative process planning, and proposes to build a unified manufacturing resource management platform (MRIMP) to realize the unified management of manufacturing resources and the unification and sharing of manufacturing resources in various information systems, so as to effectively improve the guidance of process planning

1 MRIMP system design supporting collaborative process planning

1.1 manufacturing resource modeling supporting collaborative process planning

enterprise manufacturing resources are the basis of process design and are closely related to process design. As a unified platform for manufacturing resources, MRIMP should not only support the requirements of collaborative process design for real-time process information and status information of manufacturing resources, but also support the requirements of other design and production activities for manufacturing resources. It should provide the personnel of each department with the corresponding view of manufacturing resources, so that relevant personnel can browse and schedule manufacturing resources cooperatively, This has the following requirements for MRIMP manufacturing resource modeling supporting collaborative process planning:

a. support the multi view feature of manufacturing resources. As a unified management platform for manufacturing resources, it must meet the different requirements of each application system for manufacturing resources, that is, different resource views must be formed according to different system requirements

b. ensure the consistency of manufacturing resource information. Manufacturing resources run through the whole life cycle of products. It is very important to ensure the consistency and uniqueness of manufacturing resources in each application system

c. support the dynamics of manufacturing resource information. CAPP and other application systems have high requirements for real-time dynamic information of manufacturing resources, and need to know the dynamic information of manufacturing resources such as usage load and usage status

according to the requirements of manufacturing resource modeling, this paper designs a manufacturing resource model supporting collaborative process planning, which provides strong support for collaborative process planning The model is constructed with the idea of object-oriented. By analyzing and summarizing various manufacturing resource objects, we divide the attributes of manufacturing resource objects into static attributes and dynamic attributes. Considering that the manufacturing resource model should support multiple views in the product life cycle, the parameters describing manufacturing resources are divided into the following four aspects:

a. resource management information. It mainly includes the resource number, name, affiliated unit, manufacturing unit, etc

b. technical parameters of resource use. Describe various supporting technical parameters when using resources, such as lathe processing, feed speed, cutting parameters, etc

c. capability information of resources. It mainly refers to the use scope of resources. Such as the machinable accuracy of the lathe

d. resource status information, including resource completion rate, utilization load rate, current status, maintenance history, etc

take the lathe as an example, and its model composition is shown in Figure 1

Figure 1 machine tool information model description

1.2 MRIMP architecture supporting collaborative process planning

in an enterprise, many departments use manufacturing resource information, from the company's management planning department to the design department and then to the workshop manufacturing department. As a unified manufacturing resource management platform, it is bound to transmit and collaborate with many information systems. Therefore, this paper proposes an architecture to share manufacturing resource information between MRIMP and other application systems, as shown in Figure 2

supporting system layer: considering the system data source, data management and security, this layer includes tooling design system, MES system, processocntrolsystem (PCS), ERP system and database management system. The tooling design system, MES system and PSC system provide specific manufacturing resource information for MRIMP, and the database management system provides a safe and reliable management mechanism for MRIMP

database layer: mainly includes various manufacturing resource data used in the whole life cycle of the product, such as equipment, tooling and other resource data. Since some manufacturing resources are only used in process design, it is not necessary to put them into MRIMP for management. For example, the process common term base can be directly managed by CAPP system

resource management layer: it is mainly used for comprehensive management of manufacturing resources, including resource model management, resource integration management and platform system management (i.e. various usage rights and security management of the system)

resource application system layer: including the details of manufacturing resources involved in the whole life cycle of the product. Information systems can be discussed in detail, such as CAPP system, ERP system, cam system, CAQ system, etc

user interface layer: it mainly involves the user's interactive query, modification and information feedback of process resources, and provides a friendly human-computer interaction interface for different needs

the whole application system shall be based on computer network and distributed database. All data shall be centrally organized and managed on the system server. It is completely based on networking and fully supports collaborative process design. Firstly, mirmp adopts object-oriented dynamic unified resource modeling to meet the requirements of collaborative process planning for multi view of manufacturing resources; Secondly, mirmp implements unified management of manufacturing resources, solves the problems of inconsistency and ambiguity of manufacturing resources in various information systems, and improves the efficiency of collaborative process planning; At the same time, MRIMP provides real-time manufacturing resource information through MES and CPS systems to meet the real-time information of collaborative process planning on manufacturing resources. MRIMP provides the function of collaborative process resource scheduling and configuration to support collaborative process planning, so as to optimize collaborative process planning

1.3 be ashamed of the transfer logic of MRIMP's manufacturing resource information among various systems

mirmp system manages the enterprise's manufacturing resources in a unified way, and completes the different requirements and management of enterprise manufacturing resources by various enterprise information systems. The ERP system shall obtain various resource information from MRIMP, form a resource list, and timely update the resource procurement and other information to the resource database. CAPP system should obtain accurate and timely workshop manufacturing resource information, including various process parameters, resource status, usage load and its use cost. CAPP shall provide MRIMP with a summary list of various resources in the process in real time, so that ERP and other relevant systems can use it for production planning. The cam system obtains NC machining instructions from CAPP. If manufacturing resources cannot be used, it selects manufacturing resources from MRIMP, and the change results shall be fed back to the CAPP system. The CAQ system also needs to obtain the inspection tool information from MRIMP and generate a quality inspection list. All these have real-time requirements for manufacturing resources. The current price of 200000 yuan/ton of vanadium pentoxide has increased the cost of vanadium battery by 1732.76 yuan/kwh, which requires the cooperation of the lower manufacturing execution system (MES) and process control system (PCS). MES obtains various plans and resource lists from the planning department from the resource platform, and refines the production plan. On the other hand, MES collects the data related to the use of manufacturing resources in the production process of the enterprise through the data acquisition equipment, and after the system classification and analysis, it is transformed into effective information, transmitted to MRIMP, and provided to various production functions and management departments for use. PCS system feeds back the workshop manufacturing resource information to MRIMP in real time through MES system. The flow of manufacturing resource information between the unified platform and various information systems is shown in Figure 3

Figure 3 manufacturing resource information process based on MRIMP

2 collaborative process planning based on MRIMP

process planning is a link that uses manufacturing resources frequently in the process from product design to manufacturing. Manufacturing resource information is the basis of process design. It is necessary to query material inventory and other related information during process preparation. It is necessary to know the use status information of equipment resources and tooling. According to the real-time data of the resource library and in combination with the dynamic resource decision-making library, the manufacturing resources are reasonably selected to improve the process guidance. When a technologist performs process design, the system can automatically associate the related resources in MRIMP by selecting and filling in the operation name to form various required resource views and improve the query efficiency of process design. It can also send collaborative design requests to relevant personnel to prepare collaborative processes. MRIMP supports multi-party collaborative browsing and collaborative simulation of manufacturing resources, and collaborative scheduling and configuration of manufacturing resources to reduce idle and overloaded manufacturing resources. In terms of collaborative tools, its mechanical structure and hydraulic loading principle determine its loading speed. Modern computer communication means, electronic whiteboard, collaborative browser, web conference and other collaborative enabling tools are used. When saving the process design results, the CAPP system automatically associates MRIMP to check the completeness and correctness of resource information. The collaborative process planning process based on MRIMP is shown in Figure 4

Figure 4 collaborative process planning process based on MRIMP

3 application example

combined with the actual situation of a marine equipment manufacturing enterprise, the MRIMP system is developed with vc++, and on this basis, the customizable interface between CAPP application system and MRIMP system resources is developed. The external knowledge base is used to obtain the resource platform data. The resource information can be dynamically customized by the user. The system will automatically associate the relevant resource information in MRIMP. The MRIMP system supports manufacturing and collaborative scheduling of manufacturing resources

4 conclusion

in a collaborative environment, ensuring the smooth flow and sharing of enterprise resource information in each information system so that the charging actions of enterprises are regular, supervised and evaluable is one of the keys to realize the trend of synergy in enterprise production activities. This paper introduces a manufacturing resource unified management platform system supporting collaborative process planning. The system has been implemented and applied in a shipbuilding enterprise, and has achieved good results. (end)

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