Related concepts and applications of virtual manufacturing technology

Abstract : The background, definition, characteristics and classification of virtual manufacturing are expounded, and its application and prospects are discussed.

Keywords : virtual manufacturing; advanced manufacturing model; digital model

1 Introduction

In order to survive and develop in a highly competitive global market, the manufacturing industry must be able to better meet the T, Q, C, and S requirements of the market, that is, the shortest product development cycle (Time), the highest quality products. Quality, the lowest cost of manufacturing (Cost) and the best technical support and after-sales service (Service) to win the market and users. In the face of unpredictable, sustainable development, fast-changing market demand, the company's production activities must be highly flexible.

In order to improve competitiveness, enterprises should be able to respond quickly and agilely to changes in market demand, and make timely adjustments and re-planning of their own production. The rapid development of computer hardware and software technology and network technology provides strong support for achieving this goal. Based on these factors, many new concepts and new ideas came into being in the 1990s. VirtualManufacture is one of them. It represents a brand-new manufacturing system and model. In virtual manufacturing, product development is based on digital virtual product development (VirtualProductDevelopment), driven by the needs of users, and translates user needs into various functional features of the final product. VPD guarantees the efficiency and quality of product development and improves the company's rapid response and market development capabilities.

2. Definition and characteristics of virtual manufacturing

The research on virtual manufacturing is still in the process of continuous deepening and refinement, and there is no unified public definition for it. Different researchers have given different descriptions from different perspectives, including the following:

Kimura is defined as: virtual manufacturing refers to the systematic organization and analysis of manufacturing knowledge, modeling the entire manufacturing process, design evaluation and manufacturing activity simulation on a computer. He emphasized that by describing the entire manufacturing process with a virtual manufacturing model, it has the ability to predict product performance and manufacturability before actual physical manufacturing.

Lawrence Associates believes that virtual manufacturing is an integrated, integrated, and operational environment that is designed to improve decision-making and control at all levels.

The Wright Air Force Laboratory in the United States defines virtual manufacturing as follows: Virtual manufacturing is based on computer modeling, analysis, and simulation techniques, and it is a comprehensive application of these technologies. This comprehensive application enhances design, manufacturing, production decision making and control at all levels.

It can be seen from these definitions that virtual manufacturing involves multiple subject areas and is a comprehensive integration and application of knowledge in these fields. Computer simulation, modeling and optimization techniques are the core and key technologies of virtual manufacturing. It can be considered that virtual manufacturing is a unified modeling of all aspects of the manufacturing process, including product design, processing, assembly, and even production organization management and scheduling of the enterprise, forming a virtual manufacturing environment that can be operated, supported by software technology. With high-performance hardware, digital products are generated on computer local/wide-area networks for product design, performance analysis, process decision making, manufacturing assembly, and quality inspection. It is a digital form of a generalized manufacturing system that is a dynamic simulation of the actual manufacturing process. The so-called "virtual" is relative to the actual manufacturing system of the physical product, emphasizing the computerization of the manufacturing process.

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