介绍了基于Solid W orks特征造型的特点及分类,并从设计、工艺、加工的角度阐述了特征的定义。对如何提取Solid W orks零件特征的几何信息进行了研究,提出了三种特征提取方法。并以Solid W orks中的零件为例,通过VC++6.0语言设计程序,...介绍了基于Solid W orks特征造型的特点及分类,并从设计、工艺、加工的角度阐述了特征的定义。对如何提取Solid W orks零件特征的几何信息进行了研究,提出了三种特征提取方法。并以Solid W orks中的零件为例,通过VC++6.0语言设计程序,成功地提取了零件特征的几何信息,将之保存在数据库中,为CAPP/CAM系统对数据的利用做好了准备。展开更多
Oriented to CAD/CAM seamless integration, this paper presents an idea for synthetically considering the qualitative history model, which represents the whole course of modeling, and the quantitative geometry model, wh...Oriented to CAD/CAM seamless integration, this paper presents an idea for synthetically considering the qualitative history model, which represents the whole course of modeling, and the quantitative geometry model, which contains the extended Brep model, CSG and feature pedigree. History model building captures in background the dynamic interactive definition of engineering requirement and then explicitly conveys the original intention to successive application layers, which is conductive to the decision support of manufacturing planning in not only automatic geometry re constructing but also machining set up. G DSG theory as an earlier achievement is applied to generate the topology independent generalized mid model as an input to manufacturing planning, which is therefore simplified and its accuracy is simultaneously improved. Manufacturing planning lays emphasis on optimizing the mapping in both geometry and function from part itself to detail machining scheme. Comparatively, process planning pays more attention to the mapping to those items like tool, fixture, etc. Theoretically, such an idea is also beneficial to realizing the parametric NC machining trajectory generation and maintaining its dynamic consistency with the update of the design model.[WT5”HZ]展开更多
文摘介绍了基于Solid W orks特征造型的特点及分类,并从设计、工艺、加工的角度阐述了特征的定义。对如何提取Solid W orks零件特征的几何信息进行了研究,提出了三种特征提取方法。并以Solid W orks中的零件为例,通过VC++6.0语言设计程序,成功地提取了零件特征的几何信息,将之保存在数据库中,为CAPP/CAM系统对数据的利用做好了准备。
文摘Oriented to CAD/CAM seamless integration, this paper presents an idea for synthetically considering the qualitative history model, which represents the whole course of modeling, and the quantitative geometry model, which contains the extended Brep model, CSG and feature pedigree. History model building captures in background the dynamic interactive definition of engineering requirement and then explicitly conveys the original intention to successive application layers, which is conductive to the decision support of manufacturing planning in not only automatic geometry re constructing but also machining set up. G DSG theory as an earlier achievement is applied to generate the topology independent generalized mid model as an input to manufacturing planning, which is therefore simplified and its accuracy is simultaneously improved. Manufacturing planning lays emphasis on optimizing the mapping in both geometry and function from part itself to detail machining scheme. Comparatively, process planning pays more attention to the mapping to those items like tool, fixture, etc. Theoretically, such an idea is also beneficial to realizing the parametric NC machining trajectory generation and maintaining its dynamic consistency with the update of the design model.[WT5”HZ]
