公开(公告)号：HK1048617B

公开(公告)日：2004-12-03

申请号：HK03100741

申请日：2003-01-29

Applicant: 3D SYSTEMS INC

Inventor： JAMES F BREDT ,  TIMOTHY C ANDERSON ,  DAVID B RUSSELL ,  SARAH L CLARK ,  MATTHEW DICOLOGERO

IPC: B29C20060101 ,  B29C67/00

公开(公告)号：DE60014470D1

公开(公告)日：2004-11-11

申请号：DE60014470

申请日：2000-02-08

Applicant: 3D SYSTEMS INC

Inventor： BEERS D ROSS ,  PARTANEN P JOUNI ,  TANG NANSHENG VALENCIA CALIFOR

IPC: B29C35/08 ,  B29C67/00

Abstract: A rapid prototyping and manufacturing (e.g. stereolithography) method and apparatus for producing three-dimensional objects by selectively subjecting a liquid or other fluid-like material to a beam of prescribed stimulation. In a preferred embodiment a source of prescribed stimulation is controlled to reduce or inhibit the production of the prescribed stimulation during at least some periods when the prescribed stimulation is not needed to expose the material. In another preferred embodiment, the source of stimulation is controlled to vary the quantity of prescribed stimulation that is produced and allowed to reach the material. In a additional preferred embodiment control of laser output occurs based on a combination of supplying a regulated amount of voltage to an AOM in conjunction with temporary sensing of laser power and a known desired power to attain. In a further preferred embodiment, a quantity of prescribed stimulation may be set by consideration of desired solidification depths to be used, beam profile characteristics, material properties, and scanning speed limitations for different data types. In a still further preferred embodiment, a transition between selected consecutive exposure vectors is performed by scanning one or more interposed non-exposure vectors with the beam inhibited from reaching the building material.

公开(公告)号：DE69910384T2

公开(公告)日：2004-06-24

申请号：DE69910384

申请日：1999-06-11

Applicant: 3D SYSTEMS INC

Inventor： LOCKARD F ,  SCHMIDT KRIS ,  HULL W

IPC: B22F3/00 ,  B22F3/10 ,  B22F3/12 ,  B22F3/105

Abstract: A method for making a molded refractory article including the steps of providing a mold including a master pattern, the mold and master pattern defining a mold cavity; filling the mold cavity with a mixture comprising refractory particles and a heat fugitive binder; placing the assembly of the mold, master pattern and mixture in a furnace; curing the mixture; separating the mold and master pattern from the cured mixture; removing the binder to form a porous structure, sintering the porous structure to provide a porous refractory article and infiltrating the porous refractory article with a filler metal.

公开(公告)号：DE69628348T2

公开(公告)日：2004-06-09

申请号：DE69628348

申请日：1996-09-27

Applicant: 3D SYSTEMS INC

Inventor： EARL JOCELYN M ,  MANNERS CHRIS R ,  KEREKES THOMAS A ,  MARYGOLD PAUL H ,  THAYER JEFFREY S

IPC: B22F3/00 ,  B29C35/08 ,  B29C41/12 ,  B29C41/36 ,  B29C67/00 ,  B29K63/00 ,  G06T17/00

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.

公开(公告)号：DE69910384D1

公开(公告)日：2003-09-18

申请号：DE69910384

申请日：1999-06-11

Applicant: 3D SYSTEMS INC

Inventor： LOCKARD F ,  SCHMIDT KRIS ,  HULL W

IPC: B22F3/00 ,  B22F3/10 ,  B22F3/12 ,  B22F3/105

Abstract: A method for making a molded refractory article including the steps of providing a mold including a master pattern, the mold and master pattern defining a mold cavity; filling the mold cavity with a mixture comprising refractory particles and a heat fugitive binder; placing the assembly of the mold, master pattern and mixture in a furnace; curing the mixture; separating the mold and master pattern from the cured mixture; removing the binder to form a porous structure, sintering the porous structure to provide a porous refractory article and infiltrating the porous refractory article with a filler metal.

公开(公告)号：DE69625220T2

公开(公告)日：2003-07-24

申请号：DE69625220

申请日：1996-09-27

Applicant: 3D SYSTEMS INC

Inventor： EARL M ,  MANNERS R ,  KEREKES A ,  MARYGOLD H ,  THAYER S

IPC: B22F3/00 ,  B29C35/08 ,  B29C41/12 ,  B29C41/36 ,  B29C67/00 ,  B29K63/00 ,  G06T17/00 ,  G06K15/10

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.

公开(公告)号：DE10233389A1

公开(公告)日：2003-02-20

申请号：DE10233389

申请日：2002-07-23

Applicant: 3D SYSTEMS INC

Inventor： DARRAH JAMES F ,  XU XIAOSHU

IPC: B22F3/105 ,  B29C67/00 ,  G05B19/4099 ,  G06F17/50

Abstract: A computer-controlled apparatus and method for fabricating three-dimensional articles in layerwise fashion is disclosed. Upon dispensing a layer of a fusible powder, a laser irradiates selected locations of that layer to fuse the powder into a cross-section of the article to be formed in that layer, such that the fused cross-sections fuse together into the article. The laser is controlled in a raster scan fashion across the selected locations of the powder layer. The raster scan lines are defined, for each cross-section, to achieve an optimal fill scan time. The optimal fill scan time is determined, by the computer estimating the fill scan time by rotating the cross-section over a plurality of rotational angles, and estimating the fill scan time for each of the rotated cross-sections for at least a sample of the fill scans necessary to form the article. The actual fill scan vectors to be used in selective laser sintering of the article are rotated, from a coordinate axis at the target plane, according to the rotation of the cross-section providing the lowest estimated fill scan time.

公开(公告)号：ITTO20020686A1

公开(公告)日：2003-02-01

申请号：ITTO20020686

申请日：2002-07-31

Applicant: 3D SYSTEMS INC

Inventor： DARRAH JAMES F ,  XU XIAOSHU

IPC: B22F3/105 ,  B29C67/00 ,  G05B19/4099

公开(公告)号：AT229415T

公开(公告)日：2002-12-15

申请号：AT00301387

申请日：2000-02-22

Applicant: 3D SYSTEMS INC

Inventor： BUI LOC V ,  DOAN VU ,  KWO KELLY

IPC: B29C41/00 ,  B29C67/00 ,  B29K77/00 ,  B29K91/00 ,  C08K5/103 ,  C08K5/12 ,  C08K5/20 ,  C08L23/16 ,  C08L77/06 ,  C08L91/06 ,  C08L93/04 ,  C09D11/00

Abstract: Phase change compositions that are solid at ambient temperature and liquid at an elevated temperature above ambient temperature are disclosed for advantageous use in selective deposition modeling methods for building three-dimensional objects. A phase change composition according to the disclosed invention is a semi-crystalline component mixture having a freezing point of at least about 68 DEG C., a melting point of at least about 88 DEG C. and a viscosity of about 13 centipoise at 135 DEG C. The composition includes a plurality of waxes having a broad melting point range and molecular weight range. Three-dimensional objects having minimal curl, delamination and stress cracks can be produced at a faster rate than heretofore known by using selective deposition modeling techniques employing the disclosed composition.

公开(公告)号：AT228927T

公开(公告)日：2002-12-15

申请号：AT96936016

申请日：1996-09-27

Applicant: 3D SYSTEMS INC

Inventor： EARL JOCELYN M ,  MANNERS CHRIS R ,  KEREKES THOMAS A ,  MARYGOLD PAUL H ,  THAYER JEFFREY S

IPC: B22F3/00 ,  B29C35/08 ,  B29C41/12 ,  B29C41/36 ,  B29C67/00 ,  B29K63/00 ,  G06T17/00 ,  G06K15/10

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.