光造形法における硬化物余剰成長の理論的解析および実験による評価

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タイトル別名
  • Theoretical Analysis and Experimental Evaluation on Solidified parts' Surplus Growth in Stereo-lithography.
  • ヒカリ ゾウケイホウ ニ オケル コウカブツ ヨジョウ セイチョウ ノ リロンテキ カイセキ オヨビ ジッケン ニ ヨル ヒョウカ

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抄録

In stereo-lithography fabrication process, photo-polymer resin is supplied for one layer thickness at first, then photo-polymerized selectively by laser beam, and by repeating the process layer by layer three-dimensional solid parts are fabricated. In this process, since a solidified layer must be connected to the previous layer, excessive exposure is needed to solidify the resin beyond one layer thickness. Therefore surplus growth caused by over-curing occurs at the bottom surface of the solidified layers and leads to a dimension error in the height direction. If the thickness of the surplus growth is predicted beforehand, the accuracy of an object in the height direction can be improved by cutting a few bottom surface layers from slice data in software. In this paper, a formula used to predict the thickness of the surplus growth is derived from the theoretical analysis about the mechanism of the surplus growth, and the validity of the formula is confirmed by experiments.

収録刊行物

  • 精密工学会誌

    精密工学会誌 66 (7), 1053-1058, 2000

    公益社団法人 精密工学会

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