This article focuses on methodologies of discrete patches filling in reverse engineering and rapid prototyping. In the process of part or product design, reverse engineering is an important method for constructing computer aided-design (CAD) models from a physical part that already exists. In industrial applications, a user may need to reconstruct CAD models for parts where data point capture is incomplete, such as where digitized points are captured from a damaged physical part or from certain geometric features that are difficult for a coordinate measuring machine to characterize. The sets of data points consist of some regions without data.
Discusses a method of generating adaptive ruled layers for rapid prototyping processing of complex parts. Adaptive ruled layer approximation of the stereolithography models; Integration of the multiaxis material removal process and traditional rapid prototyping processes; Computer implementation.
RAPID prototyping, PROTOTYPES, MANUFACTURING processes, MATERIALS handling, LITHOGRAPHY, and SINTERING
Selection of the most suitable rapid prototyping and manufacturing (RPM) process for a specific part creation is a difficult task due to the proliferation of RPM processes and materials. The paper studies the four dominant RPM processes currently in the market-stereolithography, selective laser sintering, fused deposition modeling and laminated object manufacturing through a benchmark part. Generic models for surface roughness, building time and building cost are also presented. Multiple considerations such as good dimensional accuracy, fine surface finish and short building time are all desirable objectives.
RAPID prototyping, COMPUTER-aided design, PRODUCTION planning, MANUFACTURING processes, PROTOTYPES, and SOLID freeform fabrication
Solid freeform fabrication processes offer the capability of fully automated production of parts. Current processes like stereolithography trade accuracy and material properties help to achieve this. A new set of processes is emerging that can deliver production-grade parts using a combination of deposition and shaping techniques. The added complexity of the process makes manufacturing planning and execution more difficult. The paper presents a part representation formalism that captures the basic elements of the manufacturing process and allows for automated algorithms to produce viable process plans.
MANUFACTURES, MANUFACTURING processes, RAPID prototyping, PRODUCTION engineering, and SYSTEM analysis
This article presents abstracts and keyword index of articles which were published in the "Journal of Manufacturing Systems" during the year 2003-2004. Some of them are as follows: "A Manufacturing Process Information Model for Design and Process Planning Integration," by Shaw C. Feng, Eugene Y. Song. This paper describes an object-oriented manufacturing process information model in the Unified Modeling Language. The model comprises classes on the necessary manufacturing information, such as artifact, manufacturing activities, workplace, manufacturing equipment, estimated cost and time, and manufacturing process sequences. "A System for Generating Process and Material Selection Advice During Embodiment Design of Mechanical Components," by Satyandra K. Gupta, Yusheng Chen, Shaw Feng and Ram Sriram. This paper describes a systematic approach to material and process selection during the embodiment design of mechanical components and a system for generating process and material selection advice.
PROTOTYPES, CHEMICAL molding, and SURFACES (Geometry)
Determines the viability of the variable geometry molding concept for rapid prototyping of curved surfaces. Advantages of the variable geometry molding process; Information on the experiments performed to develop the geometry molding concept; Type of geometry normally considered in surface prototyping.
Schaub, Diane A., Chu, Kou-Rey, and Montgomery, Douglas C.
Journal of Manufacturing Systems. 1997, Vol. 16 Issue 4, p290. 14p. 2 Black and White Photographs, 4 Diagrams, 6 Charts, 1 Graph.
MANUFACTURING processes and LITHOGRAPHY
Determines the variables that influence dimensional accuracy of stereolithography (SL) parts, involved in the rapid prototyping technology of manufacturing processes. Production of turbine engine airfoils; Application for SL parts; Dimensional accuracy; Selection of the test matrix; Influence of both layer thickness; Orientation.
Discusses abstracts of articles concerning the manufacturing processes, published in the December 2002 issue of the 'Journal of Manufacturing Systems.' 'Toward Generic Models for Comparative Evaluation and Process Selection in Rapid Prototyping and Manufacturing,' by F. Xu, Y.S. Wong and H.T. Loh; 'Least-Square Curve and Surface Localization for Shape Conformance Checking,' by Jun Qu and Radha Sarma.
Discusses the abstract of the study `Virtual Prototyping of Mechanical Assemblies with Deformable Components,' by Yong Fang and F. W. Liou, published in volume 16 of the `Journal of Manufacturing Systems.'