With the rapid development of science and technology, consumers have to meet the basic requirements of mechanical and electrical products, but also have higher and higher expectations for quality and appearance. This requires the company's developers to quickly design new products of multiple varieties and specifications according to market demand. In order to adapt to the rapidly changing market development, a new advanced manufacturing technology-virtual manufacturing technology emerged in the late 1980s.
The traditional development mode of electromechanical products is a linear phase mode. The product development process is a sequential process. In the early stage of design, it is impossible to fully predict the manufacturability, assembleability, quality reliability, user satisfaction and other factors of the product. Design to prototype production needs to be revised and improved repeatedly, so that the product development cycle is long, the cost is high, and the quality is difficult to achieve optimal. With the continuous advancement of society and the rapid development of science and technology, people's requirements for electromechanical products no longer remain on the available basis, but gradually enter the stage of personalized consumption. The product should be easy to use, and the appearance, color and so on should conform to the individual aesthetic taste of the consumer. This requires the developer of the enterprise to quickly design new products of various varieties, specifications and small batches according to the needs of the market. Consumers make multi-directional choices. Traditional serial design and manufacturing technology is difficult to adapt to the rapidly changing market requirements. In order to solve the problems faced by the manufacturing industry, a new advanced manufacturing technology-virtual manufacturing technology emerged in the late 1980s.
Virtual Manufacturing is the application of Virtual Reality technology in manufacturing. It uses information technology, simulation technology, and computer technology to comprehensively simulate people, things, information, and manufacturing processes in real-world manufacturing activities. Virtual manufacturing technology is used in product development and is called virtual product development. Existing CAD/CAPP/CAM/CAE, ERP, PDM, SCM, CRM and other manufacturing system modules are mainly aimed at solutions at certain stages of the product life cycle, and it is difficult to support the enterprise as a whole to achieve higher efficiency and more Strong innovation and meeting the diverse needs of customers; and Product Lifecycle Management System (PLMS) provides a powerful information collaboration platform that combines these independent subsystems to support the product. Innovative design and collaborative operation of the business process.
The core technology of PLMS - virtual product development for the whole life cycle of products, its connotation is: in the product design stage, fully consider the product's performance requirements, manufacturing process costs and market sales and other product life cycle (from demand analysis, product concept design All the factors of product scrapping, dynamic simulation of product geometric modeling, process design, manufacturing process, production management, quality control, application maintenance and other activities on the computer in real time and in parallel. Virtual manufacturing does not consume real resources and energy. The manufacturing process is virtual, the products produced are virtual, which can reduce the investment risk of the products, and the parallel engineering can be more effective, economical and flexible. Production, in order to achieve the shortest development cycle of new products, the lowest cost, the best design quality.
The virtual product innovation and collaborative management solution for the product life cycle is oriented to the virtual life development system of the product life cycle. With the help of the concurrent engineering management strategy and PDM integration technology, not only the function and structure of the product but also the product is considered when designing the product. All aspects of the life cycle, such as planning, design, manufacturing, marketing, operation, use, maintenance, service, environmental protection, recycling, etc., in order to achieve comprehensive optimization of products. Although there is a local serial phenomenon in the virtual product development process, from the overall perspective of the system, each module is in parallel operation.
The virtual product innovation and collaborative management solution for the product life cycle is shown in Figure 1. This solution breaks the technical barriers between product designers and manufacturers, sales personnel and end users of products. With the help of network collaborative management, the company's product innovation capability has been greatly improved. Each function module in the figure relies on PDM for product data integration. The integration here includes two aspects: one is the integration of PDM and various tool software of the system, and the other is the integration of many modules of each tool software. Through the graphical and document data, business and experience data, communication and communication data of the PDM integrated system, the functional modules of the virtual product development system are connected, interdependent, synergistically played, shared resources and work in parallel to ensure the flow of information in the virtual enterprise. Inside and outside is unimpeded.
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