Accuracy Analysis and Improvement for Direct Laser Sintering
Name
IMST001.pdf
Size
396.04 KB
Format
Adobe PDF
Checksum (MD5)
1b499a1bc49069442d21002385bfa165
Author(s)
Tang, Y.
Loh, Han Tong
Fuh, J.-Y.-H.
Wong, Yeow Sheong
Lu, L.
Ning, Y.
Wang, X.
Date Issued
January 2004
Series/Report no.
Innovation in Manufacturing Systems and Technology (IMST);
Abstract
The accuracy issue of a rapid prototyping-direct laser sintering system is studied in this paper. The sources of errors are analyzed for their contribution to the final accuracy of built parts. The error sources are related to the hardware and software of the machine, the materials and the process. Special measures were exploited to improve the accuracy of the direct laser sintering system and process. For the errors caused by hardware like laser scanner, compensation by software was developed to correct the errors resulting from galvano-mirrors and F-θ lens. A compensation function mode was added to the slicing software to compensate the errors caused by material shrinkage and laser beam offset. Based on the analysis and improvement, a desired accuracy of 0.2mm has been achieved for the direct laser sintering system, which was verified by experiments.
Subjects
accuracy
compensation
correction
direct laser sintering
rapid prototyping
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