Research And Realization Of Refrigeration Complete Sets Engineering CAD System

The craft of refrigeration complete sets engineering design is complex, and the specialization is strong. It is necessary to draw up artificially many engineering sheets which have projection relations, and the consistency of the data is difficult to be guaranteed. General CAD software is unable to satisfy the design request of the complex engineering. Simultaneously, because the development is difficult, there is not yet specialized CAD software to support design of refrigeration complete sets engineering which the enterprise requests now. So it is exigent to establish a consummate design system about refrigeration engineering to improve the efficiency of the design and the profit of the enterprise.Based on the analysis of the current status of refrigeration complete sets engineering design and CAD software's application, this thesis proposes the thought of the multi-views linkage based on AutoCAD platform firstly, and elaborates the meaning and main content of multi-views linkage and creating the BOM automatically. This thesis studies on the technology about the integration of product graph and attribute, as well as the interactive method of BOM and CAD. Furthermore, this thesis specifies the realization process of multi-views linkage by OBjectDBX technology and Graphics Transformation technology, and creating the BOM automatically by getting attribute of graph. On the basis of these studies, this thesis constructs the system model of refrigeration complete sets engineering CAD system, and discusses the structure and function module of the system. More, this thesis carries on the key analysis and the design to engineering design subsystem and the BOM management subsystem in the system structure.In the end, this thesis develops the refrigeration complete sets engineering CAD System by taking AutoCAD 2006 as the platform, making use of further development technology of VBA, taking the enterprise's actual demand as the guidance. Besides, this thesis realizes the goal function. The system is operated in Dalian Bingshan Group Co., Ltd. The result of operation indicates that the system can reduce the design cycle of refrigeration complete sets engineering, guarantee the design's quality, enhance the design's efficiency, and reduce the design's cost, therefore, increase enterprise's market competitive power.