Logic components are used to support the conceptual design Taking the stamping die structure as the research object,several logic components are defined for the conceptual die construction design A new method log...Logic components are used to support the conceptual design Taking the stamping die structure as the research object,several logic components are defined for the conceptual die construction design A new method logic assembly modeling is presented to satisfy the characteristic of the top down die design process Representing shapes and spatial relations in logic can provide a natural,intuitive method of developing complete computer systems for reasoning about die construction design at the conceptual stage This method can reflect the designer's thought clearly and provide the designer with a test bed for generating alternatives and performing reasoning work at the conceptual die design stage展开更多
This article, in order to improve the assembly of the high-pressure spool, presents an assembly variation identification method achieved by response surface method （RSM）-based model updating using IV-optimal designs...This article, in order to improve the assembly of the high-pressure spool, presents an assembly variation identification method achieved by response surface method （RSM）-based model updating using IV-optimal designs. The method involves screening out non-relevant assembly parameters using IV-optimal designs and the preload of the joints is chosen as the input features and modal frequency is the only response feature. Emphasis is placed on the construction of response surface models including the interactions between the bolted joints by which the non-linear relationship between the assembly variation caused by the changes ofpreload and the output frequency variation is established. By achieving an optimal process of selected variables in the model, assembly variation can be identified. With a case study of the laboratory bolted disks as an example, the proposed method is verified and it gives enough accuracy in variation identification. It has been observed that the first-order response surface models considering the interactions between the bolted joints based on the IV-optimal criterion are adequate for assembly purposes.展开更多
通过分析多工位级进模模架设计需求并结合UG软件装配环境及装配机制,提出了多工位级进模基于层次结构的约束装配模型,并给出了装配模型的计算机描述;利用UG OPEN/UIstyler、UGOPEN/Menuscript、UG OPEN API等工具,结合VisualC++编程软...通过分析多工位级进模模架设计需求并结合UG软件装配环境及装配机制,提出了多工位级进模基于层次结构的约束装配模型,并给出了装配模型的计算机描述;利用UG OPEN/UIstyler、UGOPEN/Menuscript、UG OPEN API等工具,结合VisualC++编程软件开发了多工位级进模模架设计模块,实现了UG环境下级进模模架的调用、修改、储存,为级进模结构标准件库功能的实现及工作零件设计模块的开发奠定了基础。展开更多
文摘Logic components are used to support the conceptual design Taking the stamping die structure as the research object,several logic components are defined for the conceptual die construction design A new method logic assembly modeling is presented to satisfy the characteristic of the top down die design process Representing shapes and spatial relations in logic can provide a natural,intuitive method of developing complete computer systems for reasoning about die construction design at the conceptual stage This method can reflect the designer's thought clearly and provide the designer with a test bed for generating alternatives and performing reasoning work at the conceptual die design stage
文摘This article, in order to improve the assembly of the high-pressure spool, presents an assembly variation identification method achieved by response surface method （RSM）-based model updating using IV-optimal designs. The method involves screening out non-relevant assembly parameters using IV-optimal designs and the preload of the joints is chosen as the input features and modal frequency is the only response feature. Emphasis is placed on the construction of response surface models including the interactions between the bolted joints by which the non-linear relationship between the assembly variation caused by the changes ofpreload and the output frequency variation is established. By achieving an optimal process of selected variables in the model, assembly variation can be identified. With a case study of the laboratory bolted disks as an example, the proposed method is verified and it gives enough accuracy in variation identification. It has been observed that the first-order response surface models considering the interactions between the bolted joints based on the IV-optimal criterion are adequate for assembly purposes.
文摘通过分析多工位级进模模架设计需求并结合UG软件装配环境及装配机制,提出了多工位级进模基于层次结构的约束装配模型,并给出了装配模型的计算机描述;利用UG OPEN/UIstyler、UGOPEN/Menuscript、UG OPEN API等工具,结合VisualC++编程软件开发了多工位级进模模架设计模块,实现了UG环境下级进模模架的调用、修改、储存,为级进模结构标准件库功能的实现及工作零件设计模块的开发奠定了基础。
