Smart factory construction content for electrical equipment manufacturing

Release time: 2023-06-25

The key core of smart manufacturing is digitalisation, networking and intelligence. Smart factories effectively integrate technologies such as the Internet of Things, big data and artificial intelligence with the research and development, production, management and service of manufacturing enterprises. Combined with the characteristics of the electrical equipment manufacturing industry, through the integration of industrial communications, industrial information security, data processing and analysis and visualisation technologies, it can achieve the interconnection of machines and equipment, full digital management of the production process, real-time updating of materials and production data, remote management and maintenance of equipment, and the enterprise's product manufacturing capacity can be expected, materials can be tracked, and product quality problems can be traced back. For electrical equipment products there are many varieties, small batch characteristics, through the optimisation of the production process in the workshop, to improve the material rationing efficiency and production line flexibility, you can achieve on-demand production, fully improve production efficiency.

Considering the complexity and difficulty of implementing the construction of a smart factory for electrical equipment manufacturing, advanced management systems need to be introduced, as shown in Figure 1, including Manufacturing Execution System (MES), Enterprise Resource Planning (ERP), Warehouse Management System (WMS), and Warehouse Management System (WMS), Warehouse Management System (WMS), Product Lifecycle Management (PLM), Supplier Relationship Management (SRM) and Advanced Advanced Planning and Scheduling (APS).

(1) The core of smart factory construction - MES 

MES is a production information management system for the workshop execution layer, which can provide enterprises with functions including production planning management, logistics and distribution management, production execution management, personnel and equipment management, quality management, etc. It is the basis for implementing efficient automated production arrangement, product manufacturing and quality inspection. At the same time, MES can collect real-time information on equipment abnormalities in the workshop, which facilitates the handling of abnormalities in the production process and the timely maintenance and repair of equipment.

In the case of a low and medium voltage electrical cabinet manufacturer, for example, the production process includes shell processing, copper row processing, component inspection, assembly and experimental testing. After the production line is upgraded and automated, electronic tags such as two-dimensional codes and bar codes can be used to mark materials, components or products, and electronic tags are used at key processes to collect information on materials, components and so on. These data can be uploaded to the data centre and then processed and analysed for display on the shop floor signage to facilitate tracking of work-in-progress information, process and yield control and process flow management. With the networking of all equipment in the workshop, the current status of the equipment can be accessed in a timely manner, enabling abnormal control and providing early warning information for maintenance and repair of equipment. In terms of quality management, MES can be used to trace products and materials, so that when unqualified products are found, they can be quickly located as a result of substandard procurement materials, equipment failure in a process or operator error, and statistical data can help companies find the path to product quality improvement.


(2) Warehouse management digital - WMS 

WMS through the inbound, outbound, warehouse transfer and other aspects of inventory batches, material correspondence, inventory inventory, quality inspection and other management, you can effectively control and track the warehouse business and cost management of the whole process, to achieve the sharing of warehouse resources and reduce enterprise costs.
After the establishment of intelligent warehousing and logistics system within the enterprise, the use of WMS can define the goods position in the warehouse and realise the transparency and visualisation of warehousing. After the material has been warehoused, the electronic label information on the material and the stored space number will be associated. When an inventory is carried out in the warehouse, detailed information about the materials on the workstations can be obtained. And when leaving the warehouse, the materials with a long storage time can be selected according to the storage time in preference to avoid quality problems due to the backlog of materials. With the implementation of intelligent logistics, the AGV can obtain the coordinates of the pick-up position by means of the position number and automatically go to the target position to pick up the goods, improving logistics efficiency.


(3) Enterprise Resource Planning Management System - ERP 

ERP can co-ordinate the various management departments of the enterprise around the market orientation, more flexible business, rapid response to market demand.ERP will be customer orders and sales forecasts of two aspects of information passed to the MES, MES after processing will produce material purchase orders and production work orders of self-made parts. In the production process, MES will transfer material distribution and transfer information and the number of completed production work orders to ERP, so that the non-production department can grasp the production situation and material usage in the workshop.


(4) Product Lifecycle Management System - PLM 

PLM mainly manages product information and can support the whole process of product development, production and maintenance. The R&D design, production process and material information of electrical products can be managed in PLM, and this information will be passed to MES as the basis for product production. PLM combined with MES can not only improve production flexibility, but also improve production efficiency and provide methods for iterative product optimisation and quality improvement.


(5) Supplier Relationship Management System - SRM 

SRM mainly manages purchasing requirements and upstream suppliers; MES will pass material requirements to SRM, which will evaluate suppliers and complete purchasing in an accurate and timely manner; SRM has to face both internal production and external markets and customers, and needs to take into account the needs of all parties, so it must be able to integrate internal and external resources to improve purchasing efficiency while effectively controlling costs.


(6) Advanced Planning and Scheduling System - APS 

APS can monitor all resources within the enterprise, including material status, equipment and personnel status, customer demand, etc., and can generate an effective and accurate production plan based on these conditions, which is the most core value system in the construction of a smart factory. APS can effectively solve the problem of optimising the scheduling of multiple processes, materials and personnel to achieve the goal of minimising time costs and maximising resource utilisation, in response to the discrete manufacturing characteristics of the electrical equipment manufacturing industry.


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