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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
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.
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公开(公告)号：WO9529053A3
公开(公告)日：1996-01-18
申请号：PCT/US9505148
申请日：1995-04-25
Applicant: 3D SYSTEMS INC
Inventor： GIGL JOHN J , PANG THOMAS H , SMALLEY DENNIS R , ALLEN KERRY J , VORGITCH THOMAS J , MANNERS CHRIS R , EARL JOCELYN M , BEDAL BRYAN J L , JACOBS PAUL F , NGUYEN HOP D , LEYDEN RICHARD N , HULL CHARLES W , VANDORIN STACIE L
CPC classification number: G06T17/00 , B29C64/135 , B29C64/40
Abstract: A method and apparatus for making high resolution objects by stereolithography utilizing low resolution materials which are limited by their inability to form unsupported structures of desired thinness and/or their inability to form coatings of desired thinness. Data manipulation techniques, based on layer comparisons, are used to control exposure in order to delay solidification of the material on at least portions of at least some cross-sections until higher layers of material are deposited so as to allow down-facing features of the object to be located at a depth in the building material which is equal to or exceeds a minimum cure depth that can effectively be used for solidifying these features. Similar data manipulations are used to ensure minimum reliable coating thicknesses exist, above previously solidified material, before attempting solidification of a next layer. In addition, horizontal comparison techniques are used to provide enhanced cross-sectional data for use in forming the object. Further, several techniques for automatically performing Z-error correction through the manipulation of a three-dimensional object representation are described. Still further, techniques for producing objects useful for investment casting applications are described, including techniques allowing for the drainage of unsolidified material. A method and apparatus for the automatic generation of vents and drain is also provided.
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3.发明授权Selective deposition modeling method and apparatus for forming three-dimensional objects and supports 有权用于形成三维物体和支撑的选择性沉积建模方法和装置公开(公告)号：US6270335B2
公开(公告)日：2001-08-07
申请号：US25251299
申请日：1999-02-18
Applicant: 3D SYSTEMS INC
Inventor： LEYDEN RICHARD N , THAYER JEFFREY S , BEDAL BRYAN J L , ALMQUIST THOMAS A , HULL CHARLES W , EARL JOCELYN M , KEREKES THOMAS A , MEROT CHRISTIAN M , FEDCHENKO RICHARD P , LOCKARD MICHAEL S , PANG THOMAS H
CPC classification number: B29C41/12 , B29C41/36 , B29C64/106 , B29C64/112 , B29C64/40 , B33Y10/00 , B33Y30/00 , B33Y40/00 , B33Y50/02
Abstract: A variety of support structures and build styles for use in Rapid Prototyping and Manufacturing systems are described wherein particular emphasis is given to Thermal Stereolithography, Fused Deposition Modeling, and Selective Deposition Modeling systems, and wherein a 3D modeling system is presented which uses multijet dispensing and a single material for both object and support formation.
Abstract translation: 描述了用于快速成型和制造系统的各种支撑结构和构造样式，其中特别强调了热立体定向，熔融沉积建模和选择性沉积建模系统，并且其中提出了一种3D建模系统，其使用多喷射分配和 一种用于物体和支撑物形成的材料。
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公开(公告)号：AT223300T
公开(公告)日：2002-09-15
申请号：AT96937643
申请日：1996-09-27
Applicant: 3D SYSTEMS INC
Inventor： LEYDEN RICHARD N , THAYER JEFFREY S , BEDAL BRYAN J L , ALMQUIST THOMAS A , HULL CHARLES W , EARL JOCELYN M , KEREKES THOMAS A , SMALLEY DENNIS R , MEROT CHRISTIAN M , FEDCHENKO RICHARD P , LOCKARD MICHAEL S , PANG THOMAS H , THAT DINH TON
Abstract: A three-dimensional object is formed by selectively depositing successive layers (14) of build material from a print-head (9) having a plurality of orifices or nozzles (10(1)-10(96)), such as an ink-jet type of print-head. The print-head (9) is moved (X-Y control) relative to a support platform (15) in a series of scans in the X-direction offset from one another in the Y-direction and possibly overlapping. The orifices (10(1)-10(96)) extend transversely of the scan X-direction and may be set at an angle (α) to it to control the resolution perpendicular to the scan direction. The platform (15) is movable relative to the print-head in the Z-direction for forming each successive layer (14). The build material is a flowable material and may be a radiation-curable material, such as an ultra-violet curable photo-polymer. The data according to which each layer is formed may be manipulated according to a selected build style to determine the selective activation of the print-head orifices.
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公开(公告)号：AT216951T
公开(公告)日：2002-05-15
申请号：AT96906277
申请日：1996-01-29
Applicant: 3D SYSTEMS INC
Inventor： ALMQUIST THOMAS A , HULL CHARLES W , THAYER JEFFREY S , LEYDEN RICHARD N , JACOBS PAUL F , SMALLEY DENNIS R
Abstract: Methods and apparatus for use in building three-dimensional objects on substantially a cross-sectional basis including methods and apparatus for forming successive layers using counter-rotating rollers, ink jet recoaters, spinning members which sling material, applicator bars that dispense material via a meniscus and/or independently dispensed streams, and also including methods and apparatus to determine a preferred region over which to form a layer and to check for building errors.
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Patent Agency Ranking
公开(公告)号：DE68929292D1
公开(公告)日：2001-05-23
申请号：DE68929292
申请日：1989-09-26
Applicant: 3D SYSTEMS INC
Inventor： ALMQUIST THOMAS A , HULL CHARLES W , MODREK BORZO , SERKUCZEWSKI ANDRZEJ R , JACOBS PAUL F , LEWIS CHARLES W , LEWIS MARK A , LIRAN ABRAHAM
IPC: B29C35/08 , B29C41/12 , B29C67/00 , B29K105/24 , G01F23/292 , G01F23/36 , G05D9/12 , G01F23/28
Abstract: A stereolithography method and system for producing three-dimensional plastic objects by forming a plurality of thin layers of partially cured plastic material which are thin cross sections of the desired object. A layer of polymerizable resin is applied to a support surface and the excess is struck off, such as with a doctor blade, to form a smoothed layer. The smoothed layer is subjected to radiation in a predetermined pattern to form the cross-sectional layer into the desired shape. A plurality of layers are subsequently applied, leveled, then cured in the same manner to produce the desired three-dimensional object. Apparatus for measuring the level of the surface of a fluid is also provided. Variations in the level of fluid will be detected and may be used to drive a pump, diaphragm, or plunger in order to maintain the level of the fluid.
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公开(公告)号：AT200644T
公开(公告)日：2001-05-15
申请号：AT95107870
申请日：1989-09-26
Applicant: 3D SYSTEMS INC
Inventor： ALMQUIST THOMAS A , HULL CHARLES W , MODREK BORZO , SERKUCZEWSKI ANDRZEJ R , JACOBS PAUL F , LEWIS CHARLES W , LEWIS MARK A , LIRAN ABRAHAM
IPC: B29C35/08 , B29C41/12 , B29C67/00 , B29K105/24 , G01F23/292 , G01F23/36 , G05D9/12 , G01F23/28
Abstract: A stereolithography method and system for producing three-dimensional plastic objects by forming a plurality of thin layers of partially cured plastic material which are thin cross sections of the desired object. A layer of polymerizable resin is applied to a support surface and the excess is struck off, such as with a doctor blade, to form a smoothed layer. The smoothed layer is subjected to radiation in a predetermined pattern to form the cross-sectional layer into the desired shape. A plurality of layers are subsequently applied, leveled, then cured in the same manner to produce the desired three-dimensional object. Apparatus for measuring the level of the surface of a fluid is also provided. Variations in the level of fluid will be detected and may be used to drive a pump, diaphragm, or plunger in order to maintain the level of the fluid.
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公开(公告)号：BR9607005A
公开(公告)日：1997-10-28
申请号：BR9607005
申请日：1996-01-29
Applicant: 3D SYSTEMS INC
Inventor： ALMQUIST THOMAS A , HULL CHARLES W , THAYER JEFFREY S , LEYDEN RICHARD N , JACOBS PAUL F , SMALLEY DENNIS R
Abstract: Methods and apparatus for use in building three-dimensional objects on substantially a cross-sectional basis including methods and apparatus for forming successive layers using counter-rotating rollers, ink jet recoaters, spinning members which sling material, applicator bars that dispense material via a meniscus and/or independently dispensed streams, and also including methods and apparatus to determine a preferred region over which to form a layer and to check for building errors.
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公开(公告)号：AU2365595A
公开(公告)日：1995-11-16
申请号：AU2365595
申请日：1995-04-25
Applicant: 3D SYSTEMS INC
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公开(公告)号：DE3587656T2
公开(公告)日：1994-04-28
申请号：DE3587656
申请日：1985-08-06
Applicant: 3D SYSTEMS INC
Inventor： HULL CHARLES W
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