公开(公告)号：JP2000000893A

公开(公告)日：2000-01-07

申请号：JP16677199

申请日：1999-06-14

Applicant: 3D SYSTEMS INC ,  3 D SYSTEMS INC

Inventor： HULL CHARLES WILLIAM ,  LEWIS CHARLES WILLIAM ,  FREED RAYMOND SAMUEL ,  SPENCE STUART THOMAS ,  VINSON WAYNE ALLAN ,  SMALLEY DENNIS ROLLETTE ,  HULL CHARLES W ,  SPENCE STUART T ,  LEWIS CHARLES W ,  VINSON WAYNE B ,  WAYNE S FRED ,  SMALLEY DENNIS R

IPC: B29C35/08 ,  B29C67/00 ,  B29K105/24 ,  B44B1/00 ,  G03F7/00 ,  G03F7/20 ,  G06F17/50

Abstract: PROBLEM TO BE SOLVED: To perform the automatic designing economically with rapidity and high reliability by providing a step to partially change stored sets of data for defining the solid part of the shape of an object and coverting the solid part into a part consisting of a region where it is cured or a region where it is maintained in an uncured state according to each of exposure levels. SOLUTION: When a design displayed on the output image screen of a computer is satisfactory, parts are manufactured and when the design needs to be corrected, a change is repeatedly made through the computer. In this case, a pattern for stimulating each of many superposed thin layers 30a, 30b, 30c of a transferable fluid medium 22 is changed partially in a data processing step 25. Further, alteration data for converting the solid part to the part comprising a region where it is cured according to a first exposure level and a region where it is cured according to a second lower exposure level or a region where it is maintained in an uncured state while each of the thin layers 30a, 30b, 30c is initially formed, is created.

公开(公告)号：JP2000218708A

公开(公告)日：2000-08-08

申请号：JP26950999

申请日：1999-09-22

Applicant: 3 D SYSTEMS INC

Inventor： HAL CHARLES WILLIAM ,  LEWIS CHARLES WILLIAM

IPC: B29C35/08 ,  B29C67/00

Abstract: PROBLEM TO BE SOLVED: To automatically form a structure for supporting a matter and a structure for fixing the matter to a stand in a stereo-lithography method for forming a three-dimensional matter. SOLUTION: A first means for prescribing a matter support structure especially formed in relation to a three-dimensional matter to be formed and a second means for automatically forming the three-dimensional matter in response to especially formed data are provided. The especially formed data prescribes a web sufficiently thin to facilitate the detachment from the matter after formed or a web sufficiently long to reach the cross section of the matter or a support fixing the edge of a layer to a proper place until a crosshatch vector is drawn or a support preventing the deformation of a cantilever or a support attaching the part of a layer becoming a drifted layer.