Study And Practice Of CAPP Software Component Based On 3D Platform

Reconfigurable CAPP system based on 3D platform represents the research and development direction of CAPP system. Using the mainstream 3D-CAD as the basic platform, it researches mainly the basic software component of CAPP in the 3D environment, adds some accessorial functions such as system modeling and software component integration based on carrying on addition,deletion,modification and inquiry to the software component, ultimately, realizes synchro visualization expression of 3D-CAD/CAPP, parametric two-way drive between 3D models, establishing the 3D-CAPP technology resources library. This thesis introduces the status,development trend and existent problems of the current CAPP system, puts forward the solutions to CAPP software component based on 3D platform, completes the design to system structure of software component, researches some key techniques of 3D-CAPP, and develops a reconfigurable CAPP system which is able to customize technology according to the factual situation of a enterprise based on software component.CAPP system based on software component. CAPP system is not universal software, must be implemented in accordance with the factual situation of kinds of enterprises and be emphasized every client's requirement. CAPP system adopts software component technique and configuration tools of dynamic service interface, realizes system's dynamic adjustability and expansibility, enhances software understandability, maintainability, reusability, changes the situation which is excessively reliable on the initial design , and keeps design simpleness and flexibility.CAPP system based on 3D-CAD. There are many deficiencies of 2D-CAD system, for instance, a part model which is expressed by line frame lacks necessary technology information such as feature information, topology information, precision information, and so on. Therefore, basing on 3D-CAD platform is the distinct character of this CAPP system and is also different from the current CAPP system. It integrates with 3D-CAD and other typical enterprise information software such as PDM and ERP, pays attention to methods and means of integration between every specialty interface, between CAD and CAPP. Especially, integrating with 3D-CAD, it automatically brings some necessary product information (such as: feature information, topology information, precision information , product type, product name, part number, part name, material type, and so on) to technology design system and finally realizes complete integration with CAD information.Reconfigurable CAPP system based on 3D platform is at the core of resource library, is on the basis of interactive performance, uses retrieval, revision, innovation, as well as other hybrid strategy, consequently, makes technology establishment more convenient, intuitionistic, practical, canonical. It adopts typical technology knowledge library, greatly decrease technologists' time of looking for technology handbooks and relative datum. Furthermore, the abundant typical technology information substitutes manual work which looks for designed technology.instances, helps technologists who are less experience to work out excellent product technology which is close to expert level.