Source: https://patents.google.com/patent/US6325961?oq=5%2C545%2C531
Timestamp: 2018-03-25 00:30:26
Document Index: 368540914

Matched Legal Cases: ['Application No. 08', 'Application No. 09', 'Application No. 09', 'Application No. 09', 'Application No. 09', 'Application No. 09', 'Application No. 09', 'Application No. 09', 'Application No. 09', 'Application No. 09']

US6325961B1 - Stereolithographic method and apparatus with enhanced control of prescribed stimulation and application - Google Patents
Stereolithographic method and apparatus with enhanced control of prescribed stimulation and application Download PDF
US6325961B1
US6325961B1 US09246502 US24650299A US6325961B1 US 6325961 B1 US6325961 B1 US 6325961B1 US 09246502 US09246502 US 09246502 US 24650299 A US24650299 A US 24650299A US 6325961 B1 US6325961 B1 US 6325961B1
US09246502
4,575,330 Hull Discloses fundamental elements of
Mar 11, 1986 stereolithography.
4,999,143 Hull, et al. Discloses various removable support
Mar 12, 1991 structures applicable to
07/182,801 stereolithography.
5,058,988 Spence Discloses the application of beam
Oct 22, 1991 profiling techniques useful in
07/268,816 stereolithography for determining
Nov 8, 1988 cure depth and scanning velocity, etc.
5,059,021 Spence, et al. Discloses the utilization of drift
Oct 22, 1991 correction techniques for eliminating
07/268,907 errors in beam positioning resulting
Nov 8, 1988 from instabilities in the beam
5,076,974 Modrek, et al. Discloses techniques for post
Dec 31, 1991 processing objects formed by
07/268,429 stereolithography. In particular
Nov 8, 1988 exposure techniques are described
5,104,592 Hull Discloses various techniques for
Apr 14, 1992 reducing distortion, and particularly
07/339,246 curl type distortion, in objects being
Apr 17, 1989 formed by stereolithography.
5,123,734 Spence, et al. Discloses techniques for calibrating a
Jun 23, 1992 scanning system. In particular tech-
07/268,837 niques for mapping from rotational
Nov 8, 1988 mirror coordinates to planar target
5,133,987 Spence, et al. Discloses the use of a stationary
JuI 28, 1992 mirror located on an optical path
07/427,885 between the scanning mirrors and the
Oct 27, 1989 target surface to fold the optical
5,141,680 Almquist, et al. Discloses various techniques for
Aug 25, 1992 selectively dispensing a material
07/592,559 to build up three-dimensional objects.
5,143,663 Leyden, et al. Discloses a combined stereo-
Sep 1, 1992 lithography system for building
07/365,444 and cleaning objects.
5,174,931 Almquist, et al. Discloses various doctor blade
Dec 29, 1992 configurations for use in
07/515,479 forming coatings of medium adjacent
Apr 27, 1990 to previously solidified laminae.
5,182,056 Spence, et al. Discloses the use of multiple
Jan 26, 1993 wavelengths in the exposure of a
07/429,911 stereolithographic medium.
5,182,715 Vorgitch, et al. Discloses various elements of a
Jan 26, 1993 large stereolithographic system.
5,184,307 Hull, et al. Discloses a program called Slice and
Feb 2, 1993 various techniques for converting
07/331,644 three-dimensional object data into
Mar 31, 1989 data descriptive of cross-sections.
5,192,469 Hull, et al. Discloses various techniques for
Mar 9, 1993 forming three-dimensional object
07/606,802 from sheet material by selectively
Oct 30, 1990 cutting out and adhering laminae.
5,209,878 Smalley, et al. Discloses various techniques for
May 11, 1993 reducing surface discontinuities
07/605,979 between successive cross-sections
Oct 30, 1990 resulting from a layer-by-layer
5,234,636 Hull, et al. Discloses techniques for reducing
Aug 10, 1993 surface discontinuities by
07/929,463 coating a formed object with a
Aug 13, 1992 material, heating the material to
5,238,639 Vinson, et al. Discloses a technique for
Aug 24, 1993 minimizing curl distortion by
07/939,549 balancing upward curl to
Mar 31, 1992 downward curl.
5,256,340 Allison, et al. Discloses various build/exposure
Oct 26, 1993 styles for forming objects
07/906,207 including various techniques for
Jun 25, 1992 reducing object distortion.
and Disclosed techniques include:
08/766,956 (1) building hollow, partially
Dec 16, 1996 hollow, and solid objects,
5,321,622 Snead, et al. Discloses a computer program known
Jun 14, 1994 as CSilce which is used to convert
07/606,191 three-dimensional object data into
Oct 30, 1990 cross-sectional data. Disclosed
5,597,520 Smalley, et al. Discloses various exposure
Jan 28, 1997 techniques for enhancing object
08/233,027 formation accuracy. Disclosed
Apr 25, 1994 techniques address formation of high
and resolution objects from building
08/428,951 materials that have a Minimum
Apr 25, 1995 Solidification Depth greater than one
08/722,335 Thayer, et al. Discloses build and support styles
Sep 27, 1996 for use in a Multi-Jet Modeling
5,943,235 Earl, et al Discloses data manipulation and
Aug 24, 1999 system control techniques for use in a
08/722,326 Multi-Jet Modeling selective
Sep 27, 1996 deposition modeling system.
5,902,537 Almquist, et al. Discloses various recoating
May 11, 1999 techniques for use in stereo-
08/790,005 lithography. Disclosed techniques
Jan 28, 1997 include 1) an ink jet dispensing
5,840,239 Partanen, et al. Discloses the application of solid-
Nov 24, 1998 state lasers to stereolithography.
08/792,347 Discloses the use of a pulsed
Jan 31, 1997 radiation source for solidifying
6,001,297 Partanen, et al. Discloses the stereolithographic
Dec 14, 1999 formation of objects using a
6,084,980 Nguyen, et al. Discloses techniques for interpolating
Jul 4, 2000 originally supplied cross-sectional
08/855,125 data descriptive of a three-
May 13, 1997 dimensional object to produce modi-
5,945,058 Manners, et al. Discloses techniques for identifying
Aug 31, 1999 features of partially formed objects.
08/854,950 Identifiable features include trapped
May 13, 1997 volumes, effective trapped volumes,
5,902,538 Kruger, et al. Discloses simplified techniques for
May 11, 1999 making high-resolution objects
08/920,428 utilizing low-resolution materials
Aug 29, 1997 that are limited by their inability to
09/061,796 Wu, et al. Discloses use of frequency converted
Apr 16, 1998 solid state lasers in stereolithography.
09/154,967 Nguyen, et al. Discloses techniques for
Sep 17, 1998 stereolithographic recoating using a
(now abandoned.) sweeping recoating device that pause
09/484,984 Earl, et al. Entitled “Method and Apparatus for
filed Jan 18, 2000 Forming Three-Dimensional Objects
based on Using Line Width Compensation with
Provisional Small Feature Retention.” Discloses
App. 60/116,281 techniques for forming objects while
filed Jan 19, 1999 compensating for solidification width
09/246,504 Guertin, et al. Entitled “Method and Apparatus for
file Feb 8, 1999 Stereolithographically Forming Three
concurrently Dimensional Objects With Reduced
herewith, Distortion.”Discloses techniques
09/248,352 Manners, et al. Entitled Stereolithographic Method
filed Feb 8, 1999 and Apparatus for Production of
concurrently Three Dimensional Object Using
herewith Multiple Beams of Different
Diameters” Discloses stereo-
6,103,176 Nguyen, et al. Entitled “Stereolithographic Method
issued and Apparatus for Production of
Aug 15, 2000, Three Dimensional Objects Using
filed Feb 8, 1999 Recoating Parameters for Groups of
concurrently Layers.” Discloses improved
herewith techniques for managing recoating
09/246,416 Bishop, et al. Entitled “Rapid Prototyping
filed Feb 8, 1999 Apparatus with Enhanced Thermal
concurrently and Vibrational Stability for
herewith Production of Three Dimensional
Objects.” Discloses an improved
09/247,113 Chari, et al Entitled “Stereolithographic Method
concurrently Three Dimensional Objects with
herewith Enhanced thermal Control of the
09,247,119 Kulkarni, et al. Entitled “Stereolithographic Method
concurrently Three Dimensional Objects Including
herewith Simplified Build Preparation.”
101, 201 231
102, 202 232 272
103, 203 233 273
104, 204 234 274
105, 205 235 275
106, 206 236 256 276
107, 207 237 277
108, 208 238 278
109, 209 259 279
110, 210 260 280
111, 211 241 261 281
112, 212 262 282
113, 213 263 283
114, 214 264 284
115, 215 265 285
116, 216 266
Element 408 calls for an analysis of whether or not either of ΔSX or ΔSY is greater than N1. If this condition is met, it means that a transition between the two vectors can not occur without the introduction of two or more non-exposure vectors. If the response is “yes”, the process proceeds to element 410 where the process of generating non-exposure vectors begin. Alternatively, if the response is “no”, the process proceeds to element 424 where another inquiry is made.
Element 424 is reached by conclusion in element 408 that the change in both the X and Y scanning speed components is less than an acceptable amount set by the HSBorder variable. Element 424 calls for an analysis of whether the ending point of the “i”th exposure vector EV, is coincident with the beginning point of the (i+1)th exposure vector EVi+1.
If the criterion of element 424 is not met, the process proceeds to element 426 wherein a transition vector JV, is inserted between the “i”th and (i+1)th exposure vectors. This transition vector is used to bridge the gap between the two vectors. Additional non-exposure vectors are not typically needed as it is possible to achieve the desired changes in direction and speed based on use of feed forward acceleration commands at the end of the “i”th transition vector and the end of jump vector JVi.
The process then continues from either step 510 or 514, where an inquiry is made as to whether or not the VS(i) is the last vector set. If so, element 520 indicates that the process is complete. If not, the procedure moves to element 518 where “i” is incremented by one and the process loops back to element 500.
If the response to the inquiry of element 614 is “yes”, the process proceeds to Element 616 where the laser power is lowered from the ALP to HLP. Once the laser power is reset the process exposes the VS(I) using the HLP (Element 618)
If the response to the inquiry of element 614 was “no”, the process moves forward to element 620 and 622. Element 620 calls for deriving the expose time, ETH(I), for the full set of vectors in VS(I) using the highest usable laser power HLP. Element 622 calls for deriving the expose time, ETA(I), for the full set of vectors in VS(I) using the actual laser power ALP.
Element 634 inquires as to whether the “i” th vector set VS(l) is the last vector set. If an affirmative response is obtained, the process proceeds to element 636 and determinates. If a negative response is obtained, the process proceeds to element 638 where the variable “i” is incremented by one, after which the process loops back to Element 602, where elements 602-634 are repeated until all the vector sets have been processed.
exposing the material to the beam of prescribed stimulation to form the subsequent lamina of the object according to vector data descriptive of the subsequent lamina; and
wherein the source of prescribed stimulation is controlled to provide one quantity of prescribed stimulation in the beam when exposing the material according to a first set of exposure vectors and another quantity of prescribed stimulation when exposing the material to a second set of exposure vectors.
2. The method of claim 1 wherein the first set of exposure vectors is used in exposing at least a portion of a first layer and wherein the second set of exposure vectors is used in exposing at least a portion of a second layer of material, where the first and second layers are located at different cross-sectional levels in the object.
4. The method of claim 3 wherein the inhibiting device is used to direct a varying quantity of radiation into the at least one frequency conversion element so as to allow production of a varying quantity of prescribed stimulation.
a scanning system to selectively expose the material to the beam of prescribed stimulation to form the subsequent lamina of the object according to vector data descriptive of the subsequent lamina; and
a computer programmed to repeatedly operate the recoating system, the scanning system, and the beam of prescribed stimulation a plurality of times in order to form the object from a plurality of adhered laminae,
wherein software is programmed or hardware configured to provide one quantity of prescribed stimulation in the beam when operating the scanning system to expose the material according to a first set of exposure vectors and another quantity of prescribed stimulation to expose the material to a second set of exposure vectors.
13. The apparatus of claim 12 wherein the scanning system exposes the first set of exposure vectors in at least a portion of a first layer and exposes the second set of vectors in at least a portion of a second layer of material, where the first and second layers are located at different cross-sectional levels in the object.
15. The apparatus of claim 14 wherein the beam inhibiting device is used to direct a varying quantity of radiation into the at least one frequency conversion element so as to allow production of a varying quantity of prescribed stimulation.
US09246502 1999-02-08 1999-02-08 Stereolithographic method and apparatus with enhanced control of prescribed stimulation and application Active US6325961B1 (en)
US09246502 US6325961B1 (en) 1999-02-08 1999-02-08 Stereolithographic method and apparatus with enhanced control of prescribed stimulation and application
JP2000031250A JP2000296560A (en) 1999-02-08 2000-02-08 Method and apparatus for stereo lithography improved in curing stimulus
DE2000614470 DE60014470T2 (en) 1999-02-08 2000-02-08 Stereolithographic method and apparatus with control of changing the prescribed stimulation
EP20000300964 EP1033229B1 (en) 1999-02-08 2000-02-08 Stereolithographic method and apparatus with control to vary prescribed stimulation
DE2000614470 DE60014470D1 (en) 1999-02-08 2000-02-08 Stereolithographic method and apparatus with control of changing the prescribed stimulation
JP2005303342A JP4503522B2 (en) 1999-02-08 2005-10-18 Molding method of three-dimensional objects
US6325961B1 true US6325961B1 (en) 2001-12-04
ID=22930946
US09246502 Active US6325961B1 (en) 1999-02-08 1999-02-08 Stereolithographic method and apparatus with enhanced control of prescribed stimulation and application
US (1) US6325961B1 (en)
EP (1) EP1033229B1 (en)
JP (2) JP2000296560A (en)
DE (2) DE60014470T2 (en)
WO2006018370A1 (en) * 2004-08-11 2006-02-23 Hitachi Via Mechanics, Ltd Method for machining a workpiece by using pulse laser radiation with controllable energy of individual laser pulses and time intervals between two successive laser pulses, and a laser machining system therefor
US20090179353A1 (en) * 2007-12-21 2009-07-16 Eos Gmbh Electro Optical Systems Method of manufacturing a three-dimensional object
EP2597649A1 (en) * 2011-11-22 2013-05-29 Thomson Licensing Data storage device, method for writing and reading the data storage device and use of a 3D printing machine
CN103692651A (en) * 2013-12-06 2014-04-02 中铁建设集团有限公司 BIM (Building Information Modeling) model designing device with 3D input and output functions
WO1995018009A1 (en) 1993-12-29 1995-07-06 Kira Corporation Sheet laminate forming method and sheet laminate forming apparatus
WO1996012607A1 (en) 1994-10-19 1996-05-02 Bpm Technology, Inc. Apparatus and method for thermal normalization in three-dimensional article manufacturing
WO1996012608A2 (en) 1994-10-19 1996-05-02 Bpm Technology, Inc. Apparatus and methods for making a three-dimensional article
WO1996012609A1 (en) 1994-10-19 1996-05-02 Bpm Technology, Inc. Apparatus and method for making three-dimensional articles using bursts of droplets
JPH02251419A (en) * 1989-03-27 1990-10-09 Sony Corp Three-dimensional shape formation
JPH06143437A (en) * 1992-11-10 1994-05-24 Shiimetsuto Kk Ultraviolet curing shaping device
JP3423029B2 (en) * 1993-06-17 2003-07-07 三洋電機株式会社 Optical shaping apparatus
JP3412278B2 (en) * 1994-09-20 2003-06-03 株式会社日立製作所 The optical shaping apparatus and method
JPH08108480A (en) * 1994-10-12 1996-04-30 Denken Eng Kk Photo-molding device
JP3779358B2 (en) * 1995-10-06 2006-05-24 ソニー株式会社 Three-dimensional shape molding method
JPH10119136A (en) * 1996-10-21 1998-05-12 Agency Of Ind Science & Technol Photo-shaping method using selected light sources and stereoscopially shaped article to be obtained by the method
JPH10268367A (en) * 1997-03-26 1998-10-09 Hitachi Ltd Method and device for laser wavelength conversion, method and device for exposure, and manufacture of semiconductor device
Abstract of Japan 09-099490 (Apr. 15, 1997).*
Abstract of Japan 10-119136 (May 12, 1998).*
Abstract of Japan 10-268367 (Oct. 9, 1998).*
U.S. Patent Application No. 08/722,335, filed Sep. 27, 1996 by Leyden et al. (now abandoned).
U.S. Patent Application No. 09/061,796, filed Apr. 16, 1998 by Wu et al.
U.S. Patent Application No. 09/154,967, filed Sep. 17, 1998 by Nguyen et al. (now abandoned).
U.S. Patent Application No. 09/246,416, filed Feb. 8, 1999 by Bishop et al.
U.S. Patent Application No. 09/246,504, filed Feb. 8, 1999 by Guertin et al.
U.S. Patent Application No. 09/247,113, filed Feb. 8, 1999 by Chari et al.
U.S. Patent Application No. 09/247,119, filed Feb. 8, 1999 by Kulkarni et al.
U.S. Patent Application No. 09/247,120, filed Feb. 8, 1999 by Everett et al.
U.S. Patent Application No. 09/248,352, filed Feb. 8, 1999 by Manners et al.
U.S. Patent Application No. 09/484,984, filed Jan. 18, 2000 by Earl, et al.
US8303886B2 (en) * 2007-12-21 2012-11-06 Eos Gmbh Electro Optical Systems Method of manufacturing a three-dimensional object
DE60014470T2 (en) 2006-02-02 grant
DE60014470D1 (en) 2004-11-11 grant
JP4503522B2 (en) 2010-07-14 grant
JP2006082559A (en) 2006-03-30 application
EP1033229A2 (en) 2000-09-06 application
EP1033229A3 (en) 2001-10-04 application
JP2000296560A (en) 2000-10-24 application
EP1033229B1 (en) 2004-10-06 grant
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BEERS, ROSS D.;PARTANEN, JOUNI P.;REEL/FRAME:009929/0189;SIGNING DATES FROM 19990416 TO 19990423
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BEERS, ROSS D.;PARTANEN, JOUNI P.;TANG, NANSHENG;REEL/FRAME:010561/0651;SIGNING DATES FROM 19990416 TO 19990423