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STEP-NC Document Database Management via XML Format

Author: XuQingYi
Tutor: JiaQingXiang
School: Jilin University
Course: Mechanical Manufacturing and Automation
Keywords: STEP-NC XML VC++ Oracle 10g document regeneration
CLC: TP311.13
Type: Master's thesis
Year: 2009
Downloads: 86
Quote: 1
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Abstract


At present, the essential of the competition in the machine manufacturing field is the competition of the NC technology. With the development of technology, NC machining achieve automatic, flexible and integrated manufacture of production. NC is the basis of the technology of CAD / CAM, FMS, CIMS, and so on. So modern manufacturing technology is at the basis of NC technology. In the machinery manufacturing industry NC code of ISO6983 is now widely used, however, it can not bring CNC machine tools and other computer-aided system for bidirectional exchange of information and other shortcomings make it difficult to meet the production efficiency of modern manufacturing growing demands. Thus, STEP-NC is put forward as a new generation of NC code standards to replace the ISO6983 standards.STEP-NC is the extension of STEP (Standard for the Exchange of Product Model Data) standard to the field of NC. It is based on STEP standard and contacts the design information and manufacturing information of product and solves the bottleneck problem of information bidirectional exchange between CNC machine tool and computer-aided system. So it will give a far-reaching impact on the processing manufacturing industry. According to the Stepstools Company’s research, the application of STEP-NC can reduced 75% CAD stage of the production data preparation time, reducing 35% of CAM planning stage of the processing time, and a 50% reduction in processing time.However, most of the STEP-NC based NC programs adopt the ISO 10303 Part 21 physical file format. Although it a neat format, it is difficult to understand and explain for the computer or person without related fields knowledge. And, since this format is not suitable for the Internet transmission, it’s a tremendous impact on the company’s production and development. On the other hand, Extensible Markup Language (extensible Markup Language, XML), as an excellent language network has been widely used, but it product information modeling capacity is insufficient. Therefore, by combining the advantages of STEP-NC and XML, the technical staff will be able to inquire about and update the STEP-NC data in the database, realize network manufacturing, and improve the collaboration capabilities and competitiveness. In this thesis, "The Format Conversion from STEP-NC to XML and Data Management Design", Through the research on STEP-NC and XML file formats, developing a procedures to realize the conversion between STEP-NC and XML Format, which is used to solve the problem STEP-NC document network transmission bottlenecks, and it has a very important significance for the application of STEP-NC in the network manufacturing.The first chapter of this thesis mainly introduces some problems appeared in the application of the traditional standard ISO6983 NC code, the development of STEP and STEP-NC and the research status quo of the format conversion between STEP-NC and XML data at home and abroad, and proposed a "STEP-NC document database management via XML format" issues. The second chapter mainly introduces the conversion from STEP-NC to XML and primarily do the overview of STEP-NC physical file description and decomposition, characteristic analysis and format conversion. The third chapter does the research of XML in detail and comprehensively understands the functions of the database of Oracle 10g. This chapter focuses on the principle of creation of the database on the database software. The fourth chapter is the core section of this article. First of all, carry out the necessary research of connecting to database. This is the foundation of database development. Secondly, the; design of the basic operation of database by vc++. This includes the query, add, modify, and delete operations, etc. This chapter focuses on how to parse the XML document and save the data to database and how to re-create into XML documents through vc++ that calls the SQL language.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer software > Program design,software engineering > Programming > Database theory and systems
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