New solid modeling system for CAD/CAM integration through engineering drawing understanding

Thesis/Dissertation · Thu Jan 01 00:00:00 EST 1987

OSTI ID:5727525

Yu, Yuanchen

A solid model is crucial for CAD/CAM integration. However, for supporting downstream CAD/CAM applications, a solid model should be able to represent not only the basic shape of a mechanical part but also all the design intentions designers may have. In this research, a framework of a new solid-modeling system that can represent some design intentions and can be constructed through the scheme of engineering drawing is proposed. This framework includes three parts: a variational solid model, V-SOLID, an engineering drawing-based design model, ED-DESIGN, and a knowledge-based computer understanding system. The V-SOLID is an augmented version of the existing boundary representation which is able to represent dimension, tolerance, datum structure, surface attributes and geometric relationships among surfaces. The ED-DESIGN is an input scheme which allows the designer to input the V-SOLID through the scheme of engineering drawing. Also, in this ED-DESIGN, an engineering drawing is represented in a drawing space instead of a drawing plane, so that engineering drawing can be interpreted as a pseudo-3D design scheme. The computer understanding system is developed to construct the V-SOLID from the ED-DESIGN using a knowledge-based approach.

• Research Organization: Purdue Univ., Lafayette, IN (USA)
• OSTI ID: 5727525
• Resource Relation: Other Information: Thesis (Ph. D.)
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
COMPUTER-AIDED DESIGN
FUNCTIONAL MODELS
COMPUTER-AIDED MANUFACTURING
ENGINEERING DRAWINGS
KNOWLEDGE BASE
COMPUTERIZED SIMULATION
DIAGRAMS
MANUFACTURING
SIMULATION
420200* - Engineering- Facilities
Equipment
& Techniques
990220 - Computers
Computerized Models
& Computer Programs- (1987-1989)