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1. 发明授权

US08050786B2 Method for building three-dimensional objects with thin wall regions 有权
标题翻译：用于建立具有薄壁区域的三维物体的方法
公开(公告)号：US08050786B2
公开(公告)日：2011-11-01
申请号：US11827183
申请日：2007-07-11
申请人： Donald J. Holzwarth
发明人： Donald J. Holzwarth
IPC分类号： G06F19/00
CPC分类号： G06F17/50 , B33Y30/00 , B33Y50/02 , G05B19/4099 , G05B2219/49035 , G06T17/20
摘要： A method for modifying a computer-aided design model of a three-dimensional object, the method comprising establishing a threshold wall width, providing at least one sliced layer polyline of the computer-aided design model, determining a first distance between first and second portions of the at least one sliced layer polyline, and adjusting locations of the first and second portion to provide a second distance if the first distance is less than the threshold wall width, where the second distance is about equal to the threshold wall width, or greater.
摘要翻译：一种用于修改三维物体的计算机辅助设计模型的方法，所述方法包括建立阈值壁宽度，提供计算机辅助设计模型的至少一个切片层折线，确定第一和第二部分之间的第一距离以及如果所述第一距离小于所述阈值壁宽度，则调整所述第一和第二部分的位置以提供第二距离，其中所述第二距离大约等于所述阈值壁宽度或更大。

2. 发明申请

US20030028278A1 Selective laser sintering with interleaved fill scan 有权
标题翻译：选择性激光烧结与交错填充扫描
公开(公告)号：US20030028278A1
公开(公告)日：2003-02-06
申请号：US10205698
申请日：2002-07-26
申请人： 3D Systems, Inc.
发明人： James F. Darrah , Xiaoshu Zu
IPC分类号： G06F019/00
CPC分类号： G05B19/4099 , B22F2003/1057 , B22F2998/00 , B29C64/153 , B33Y10/00 , B33Y30/00 , B33Y40/00 , B33Y50/02 , G05B2219/49018 , G05B2219/49035 , Y02P10/295 , B22F3/1055
摘要： 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 parallel raster scan lines are separated from one another, centerline-to-centerline, according to a selected pitch, or fill scan spacing value. The positions of the parallel scan lines are determined with respect to a coordinate system at the powder layer, rather than with respect to boundaries of the cross-section being formed; in alternating layers, the parallel scan lines are offset from one another by one-half the pitch. This arrangement of the scan lines optimizes the structural strength of the article being formed, while minimizing the number of scans required to form the article.
摘要翻译：公开了一种以分层方式制造三维制品的计算机控制装置和方法。在分配一层可熔粉末时，激光照射该层的选定位置，将粉末熔合成待形成在该层中的制品的横截面，使得融合的横截面熔合在一起成型。激光器以栅格扫描方式控制在粉末层的选定位置。平行光栅扫描线根据所选间距或填充扫描间距值彼此分离，中心线到中心线。平行扫描线的位置相对于粉末层处的坐标系而不是关于所形成的横截面的边界确定; 在交替层中，平行扫描线彼此偏离了一半的间距。扫描线的这种布置优化了正在形成的制品的结构强度，同时最小化形成制品所需的扫描次数。

3. 发明申请

US20070225856A1 Method and system for toolpath generation 有权
标题翻译：生成刀具路径的方法和系统
公开(公告)号：US20070225856A1
公开(公告)日：2007-09-27
申请号：US11390521
申请日：2006-03-27
申请人： Victor Slaughter , Christopher Huskamp
发明人： Victor Slaughter , Christopher Huskamp
IPC分类号： G06F19/00
CPC分类号： G06F19/00 , B33Y50/00 , G05B19/4099 , G05B2219/49013 , G05B2219/49014 , G05B2219/49035
摘要： A system and method for toolpath creation is provided. The method includes exporting CAD defined 3-D geometry to a slicing module; slicing the 3-D geometry creating a set of 2-D patterns representing the 3-D geometry; generating vector code from the set of 2-D patterns; and translating the vector code to machine code.
摘要翻译：提供了一种用于创建刀具路径的系统和方法。该方法包括将CAD定义的3D几何导出到切片模块; 切割3-D几何创建一组表示3-D几何的2-D图形; 从一组2-D图形生成矢量代码; 并将向量代码转换为机器码。

4. 发明授权

US06823230B1 Tool path planning process for component by layered manufacture 失效
标题翻译：通过分层制造的组件的刀具路径规划过程
公开(公告)号：US06823230B1
公开(公告)日：2004-11-23
申请号：US09657134
申请日：2000-09-07
申请人： Vikram R. Jamalabad , Jeffrey A. Chard , Charles J. Gasdaska
发明人： Vikram R. Jamalabad , Jeffrey A. Chard , Charles J. Gasdaska
IPC分类号： G06F1900
CPC分类号： G05B19/4099 , B29C64/386 , B33Y50/02 , G05B2219/49035 , Y02P80/40 , Y02P90/265
摘要： Methods for improving the manufacture of objects made by layered manufacturing techniques through improved tool path generation. A vertex improvement aspect improves tool paths used to form vertices. Outer perimeter vertices can be improved by automatically creating an outer boundary reflecting the design intent to have material extending to the perimeter vertex. The outer boundary can be used as a contour tool path or as a limit to travel by raster tool paths. Boundary vertices within parts can be improved by extending more internal boundary vertices outward toward enclosing vertices, thereby eliminating some internal voids. Contour boundaries near outer perimeter corners can be better defined by extending outward a contour tool path toward the corners. Narrow regions between combinations of outer and/or inner perimeters can be filled through improved tool paths. Layer regions near inner voids can receive consistent filling through an improved raster tool path method. Sub-perimeter voids between raster bead pair turn-arounds and contour beads can be eliminated by automatically adjusting the raster tool path vertices toward the adjacent raster bead pair and/or contour bead.
摘要翻译：通过改进刀具路径生成来改进由分层制造技术制造的物体的制造方法。顶点改进方面改进了用于形成顶点的工具路径。可以通过自动创建反映设计意图的外边界以使材料延伸到周边顶点来改善外周顶点。外边界可以用作轮廓刀具路径或作为通过光栅刀具路径行进的限制。通过将更多的内部边界顶点向外扩展到封闭的顶点可以改善部分内的边界顶点，从而消除一些内部空隙。通过将轮廓刀具路径朝着拐角向外延伸可以更好地限定外周角附近的轮廓边界。外部和/或内部周边的组合之间的狭窄区域可以通过改进的工具路径填充。内部空隙附近的层区域可以通过改进的栅格工具路径方法获得一致的填充。通过自动调整光栅刀具路径顶点朝向相邻的光栅珠对和/或轮廓珠，可以消除光栅珠对转向和轮廓珠之间的子周界空隙。

5. 发明申请

US20030127436A1 Selective laser sintering with optimized raster scan direction 有权
标题翻译：选择性激光烧结与优化的光栅扫描方向
公开(公告)号：US20030127436A1
公开(公告)日：2003-07-10
申请号：US10206647
申请日：2002-07-26
申请人： 3D Systems, Inc.
发明人： James F. Darrah , Xiaoshu Zu
IPC分类号： B23K026/00
CPC分类号： G05B19/4099 , B22F2003/1057 , B22F2998/00 , B29C64/153 , B33Y10/00 , B33Y30/00 , B33Y50/02 , G05B2219/49018 , G05B2219/49035 , Y02P10/295 , B22F3/1055
摘要： 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.
摘要翻译：公开了一种以分层方式制造三维制品的计算机控制装置和方法。在分配一层可熔粉末时，激光照射该层的选定位置，将粉末熔合成待形成在该层中的制品的横截面，使得融合的横截面熔合在一起成型。激光器以栅格扫描方式控制在粉末层的选定位置。为每个横截面定义光栅扫描线，以实现最佳的填充扫描时间。通过计算机通过在多个旋转角度上旋转横截面来估计填充扫描时间，并且针对至少一个样本的样本估计每个旋转截面的填充扫描时间来确定最佳填充扫描时间填写形成文章所需的扫描。根据提供最低估计填充扫描时间的横截面的旋转，用于物品的选择性激光烧结中的实际填充扫描矢量从目标平面的坐标轴旋转。

6. 发明授权

US07930054B2 Method and system for toolpath generation 有权
标题翻译：生成刀具路径的方法和系统
公开(公告)号：US07930054B2
公开(公告)日：2011-04-19
申请号：US11390521
申请日：2006-03-27
申请人： Victor B. Slaughter , Christopher S. Huskamp
发明人： Victor B. Slaughter , Christopher S. Huskamp
IPC分类号： G06F19/00
CPC分类号： G06F19/00 , B33Y50/00 , G05B19/4099 , G05B2219/49013 , G05B2219/49014 , G05B2219/49035
摘要： A system and method for toolpath creation is provided. The method includes exporting CAD defined 3-D geometry to a slicing module; slicing the 3-D geometry creating a set of 2-D patterns representing the 3-D geometry; generating vector code from the set of 2-D patterns; and translating the vector code to machine code.
摘要翻译：提供了一种用于创建刀具路径的系统和方法。该方法包括将CAD定义的3D几何导出到切片模块; 切割3-D几何创建一组表示3-D几何的2-D图形; 从一组2-D图形生成矢量代码; 并将向量代码转换为机器码。

7. 发明申请

US20090018685A1 Method for building three-dimensional objects with thin wall regions 有权
标题翻译：用于建立具有薄壁区域的三维物体的方法
公开(公告)号：US20090018685A1
公开(公告)日：2009-01-15
申请号：US11827183
申请日：2007-07-11
申请人： Donald J. Holzwarth
发明人： Donald J. Holzwarth
IPC分类号： G06F19/00
CPC分类号： G06F17/50 , B33Y30/00 , B33Y50/02 , G05B19/4099 , G05B2219/49035 , G06T17/20
摘要： A method for modifying a computer-aided design model of a three-dimensional object, the method comprising establishing a threshold wall width, providing at least one sliced layer polyline of the computer-aided design model, determining a first distance between first and second portions of the at least one sliced layer polyline, and adjusting locations of the first and second portion to provide a second distance if the first distance is less than the threshold wall width, where the second distance is about equal to the threshold wall width, or greater.
摘要翻译：一种用于修改三维物体的计算机辅助设计模型的方法，所述方法包括建立阈值壁宽度，提供计算机辅助设计模型的至少一个切片层折线，确定第一和第二部分之间的第一距离以及如果所述第一距离小于所述阈值壁宽度，则调整所述第一和第二部分的位置以提供第二距离，其中所述第二距离大约等于所述阈值壁宽度或更大。

8. 发明授权

US06694207B2 Selective laser sintering with interleaved fill scan 有权
标题翻译：选择性激光烧结与交错填充扫描
公开(公告)号：US06694207B2
公开(公告)日：2004-02-17
申请号：US10205698
申请日：2002-07-26
申请人： James F. Darrah , Xiaoshu Zu
发明人： James F. Darrah , Xiaoshu Zu
IPC分类号： G06F1900
CPC分类号： G05B19/4099 , B22F2003/1057 , B22F2998/00 , B29C64/153 , B33Y10/00 , B33Y30/00 , B33Y40/00 , B33Y50/02 , G05B2219/49018 , G05B2219/49035 , Y02P10/295 , B22F3/1055
摘要： 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 parallel raster scan lines are separated from one another, centerline-to-centerline, according to a selected pitch, or fill scan spacing value. The positions of the parallel scan lines are determined with respect to a coordinate system at the powder layer, rather than with respect to boundaries of the cross-section being formed; in alternating layers, the parallel scan lines are offset from one another by one-half the pitch. This arrangement of the scan lines optimizes the structural strength of the article being formed, while minimizing the number of scans required to form the article.
摘要翻译：公开了一种以分层方式制造三维制品的计算机控制装置和方法。在分配一层可熔粉末时，激光照射该层的选定位置，将粉末熔合成待形成在该层中的制品的横截面，使得融合的横截面熔合在一起成型。激光器以栅格扫描方式控制在粉末层的选定位置。平行光栅扫描线根据所选间距或填充扫描间距值彼此分离，中心线到中心线。平行扫描线的位置相对于粉末层处的坐标系而不是关于所形成的横截面的边界确定; 在交替层中，平行扫描线彼此偏离了一半的间距。扫描线的这种布置优化了正在形成的制品的结构强度，同时最小化形成制品所需的扫描次数。

9. 发明授权

US06677554B2 Selective laser sintering with optimized raster scan direction 有权
标题翻译：选择性激光烧结与优化的光栅扫描方向
公开(公告)号：US06677554B2
公开(公告)日：2004-01-13
申请号：US10206647
申请日：2002-07-26
申请人： James F. Darrah , Xiaoshu Zu
发明人： James F. Darrah , Xiaoshu Zu
IPC分类号： B23K2600
CPC分类号： G05B19/4099 , B22F2003/1057 , B22F2998/00 , B29C64/153 , B33Y10/00 , B33Y30/00 , B33Y50/02 , G05B2219/49018 , G05B2219/49035 , Y02P10/295 , B22F3/1055
摘要： 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.
摘要翻译：公开了一种以分层方式制造三维制品的计算机控制装置和方法。在分配一层可熔粉末时，激光照射该层的选定位置，将粉末熔合成待形成在该层中的制品的横截面，使得融合的横截面熔合在一起成型。激光器以栅格扫描方式控制在粉末层的选定位置。为每个横截面定义光栅扫描线，以实现最佳的填充扫描时间。通过计算机通过在多个旋转角度上旋转横截面来估计填充扫描时间，并且针对至少一个样本的样本估计每个旋转截面的填充扫描时间来确定最佳填充扫描时间填写形成文章所需的扫描。根据提供最低估计填充扫描时间的横截面的旋转，用于物品的选择性激光烧结中的实际填充扫描矢量从目标平面的坐标轴旋转。

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