The goal of the paper is to design a system that helps to select cutting parameters in cutting processes. The approach is based on industrial engineering methods. The result is the parameters that take into account all the existing restrictive factors. First, a reasonable process to select cutting parameters is proposed. And then, the corresponding tools are designed. To achieve the standardization of the resources and process of cutting parameter selection, the resource contents and query actions are made in a uniform form. Finally, the selection of cutting parameters is realized within a flow management framework. It provides a scientific basis for selecting cutting parameters in actual production
Through the sheet metal digital information classification, induces the 2D graphics, 3D model, data forms, the information such as process design chart, file information is automatic extracted and meta data description information is interactively supplemented , data is stored in the database records, two kinds of query is designed for recorded data query and keywords retrieval methods.Engineering database system designed to define meta data, storage, retrieval, information coding and classification of four levels, combined with the engineering application of system requirements and function module design,interface of sheet metal unfolding system is developed.The system improve the design capability of sheet metal enterprises, reduce manufacturing cost, enhance the capacity of information management .
Based on the Group Technology, Family part technology is adopted for standard part design, as well as parametric driven technology is adopted for non-standard part design, combined with assemble knowledge description and associated driven technology, typical structure parts library is realized by parametric driven assemble parts. For typical structure parts library in machine tool fixture, firstly, multi-classification and key words index is designed for management; secondly, several format files are managed in mapped directory by keywords and meta-data is generated by content description of those files based on analysis constitute of design information; Thirdly, process of making use of library is designed for top-down functional design. Typical structure parts library can maximize reuse the knowledge and parts of fixture design, greatly promote design efficiency.
According to analysis of manufacturing enterprise coding requirements, Visual flexible coding system (VFCS) is proposed based on code classification theory. It has four function modules: code structure design, code segment & bit design, visual coding and interpreting, code query. Firstly, code rules are expressed by extendable XML format as data structure. Secondly, code design is regulated into two stages: code structure design and code segment design, so as to realize separation of code structure logical and contents. finally, code segment structure information is described as graphic nodes, using interactive graphics drawing for visual modeling, finite state machine algorithm are used implementing code structure interpreter.
Polycrystalline silicon-photovoltaic industry belongs to high-and-new technology industry, but it produces massive by-products (silicon tetrachloride and so on), even partial chloro-silicane and hydrogen chloride exude into the exhaust in its production process. As a consequence, it not only increases the exhaust processing cost in the polycrystalline silicon-photovoltaic industry, but also increases pollutant discharge of the enterprise. At present, Chinese polycrystalline silicon-photovoltaic enterprises cannot solve technical difficult problems in large-scale production due to lack of coordination of chemical industry. Moreover, polycrystalline silicon has high request of purity that needs quite advanced technology to achieve. This article introduces influences upon production cost and energy consumption with the use of improved Siemens method, and proposes that polytrophic-photovoltaic industry needs to be systematized, normalized and standardized for its healthy development.
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