Rapid and accurate production of stereolithographic parts

Details Rapid and accurate production of stereolithographic parts Rapid and accurate production of stereolithographic parts

1993-01-25

1997-03-11

Trammell, James P.

Boots, shoes, and leggings

4251744, 36446026, G06F 1900

Patent

active

056108249

ABSTRACT:
A stereolithography system employing a more powerful laser and faster dynamic mirrors to speed up part building without sacrificing accuracy is described, especially large or complex parts. A controllable shutter is placed in the beam path of the laser to selectably block the passage of the beam and prevent unwanted solidification. A suitable servo controlled feedback loop is provided to accurately position the mirrors at the higher velocity. Also described is a means to reduce data flow by distributing tasks in a multiple processor environment, and to improve user interaction by the use of a spreadsheet model. These also improve the speed of part building, especially for large or complex parts.

REFERENCES:
patent: 5014207 (1991-05-01), Lawton
patent: 5128235 (1992-07-01), Vassiliov et al.
patent: 5182715 (1993-01-01), Vorsitch et al.
patent: 5267013 (1993-11-01), Spence

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