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Usage of accuracy models in stereolithography process planning

Charity Lynn‐Charney (Rapid Prototyping and Manufacturing Institute, Georgia Institute of Technology, Atlanta, Georgia, USA)
David W. Rosen (Rapid Prototyping and Manufacturing Institute, Georgia Institute of Technology, Atlanta, Georgia, USA)

Rapid Prototyping Journal

ISSN: 1355-2546

Article publication date: 1 June 2000

Abstract

Determining whether a set of tolerances on a part can be met by a rapid prototyping (RP) machine is often difficult. To achieve a set of tolerances as closely as possible, relationships between part geometry, tolerances, and process variables must be understood quantitatively. This paper presents an empirical model for stereolithography apparatus (SLA) accuracy, as specified by geometric tolerances, and a process planning method based on response surface methodology and multiobjective optimization. Response surfaces are used to capture the relationships among part surfaces, tolerances, and process variables. These response surfaces were generated by extensive design‐of‐experiment studies for a variety of geometries. An annotated STL data format is also presented that enables the inclusion of tolerance and surface information in faceted representations. Application of the accuracy models and process planning method is illustrated on one part.

Keywords

Citation

Lynn‐Charney, C. and Rosen, D.W. (2000), "Usage of accuracy models in stereolithography process planning", Rapid Prototyping Journal, Vol. 6 No. 2, pp. 77-87. https://doi.org/10.1108/13552540010323600

Publisher

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MCB UP Ltd

Copyright © 2000, MCB UP Limited