Automated design and manufacturing feedback for three dimensional (3D) printability

Patent metadata

Field	Value
Publication number	US-9747394-B2
Application number	US-201414217891-A
Country	US
Kind code	B2
Filing date	Mar 18, 2014
Priority date	Mar 18, 2014
Publication date	Aug 29, 2017
Grant date	Aug 29, 2017

Abstract

A system and a method assess the three dimensional (3D) printability of a 3D model. Slices of the 3D model are received or generated. The slices represent two dimensional (2D) solids of the 3D model to be printed in corresponding print layers. Further, printing of the slices is simulated to identify corresponding printable slices.

First claim

What is claimed is:

1. A system for assessing three dimensional (3D) printability of a 3D model, said system comprising:
at least one processor configured to:
receive or generate slices of the 3D model, the slices representing two dimensional (2D) solids of the 3D model to be printed in corresponding print layers, wherein one of the slices is generated by intersecting a 2D plane with its normal parallel to a build orientation of the 3D model at a height of the corresponding print layer;
sample a rotation space of the 3D model to generate a set of build orientations of the 3D model;
optimize an objective function related to build orientation to identify a best build orientation of the set;
adaptively sample the best build orientation in a rotation space until convergence of the objective function to identify an optimal build orientation; and
simulate printing of the slices to identify corresponding printable slices.

2. The system according to claim 1 , wherein the objective function identifies an amount of support material on surfaces of the 3D model that are neither functional nor aesthetic.

3. The system according to claim 1 , wherein the at least one processor includes a plurality of processors, and wherein the plurality of processors are configured to simultaneously simulate printing of a plurality of the slices in parallel to identify corresponding printable slices.

4. A system for assessing three dimensional (3D) printability of a 3D model, said system comprising:
at least one processor configured to:
receive or generate slices of the 3D model, the slices representing two dimensional (2D) solids of the 3D model to be printed in corresponding print layers; and
simulate printing of the slices to identify corresponding printable slices, wherein the simulation simulates printing of each of the slices to identify a corresponding printable slice by translating a feature model representing a smallest printable feature within a boundary of the slice or along a user-defined tool path.

5. The system according to claim 4 , wherein the translating is performed on a boundary representation of the slice.

6. The system according to claim 4 , wherein the translating is performed on an image representation of the slice.

7. A system for assessing three dimensional (3D) printability of a 3D model, said system comprising:
at least one processor configured to:
receive or generate slices of the 3D model, the slices representing two dimensional (2D) solids of the 3D model to be printed in corresponding print layers; and

simulate printing of the slices to identify corresponding printable slices, wherein the simulation simulates printing of each of the slices to identify a corresponding printable slice by calculating a morphological opening of the slice by a structuring element representing a smallest printable feature.

8. The system according to claim 7 , wherein the at least one processor includes a plurality of processors, and wherein the plurality of processors are configured to simultaneously simulate printing of a plurality of the slices in parallel to identify corresponding printable slices.

9. A system for assessing three dimensional (3D) printability of a 3D model, said system comprising:
at least one processor configured to:
receive or generate slices of the 3D model, the slices representing two dimensional (2D) solids of the 3D model to be printed in corresponding print layers; and

simulate printing of the slices to identify corresponding printable slices, wherein the at least one processor is further configured to:
simulate printing of each of the slices to identify a corresponding printability map, the printability map partitioning the slice into three disjoint sets of regions, the three disjoint sets including a set of regions formed of features smaller than a minimum printable feature, a set of regions formed of features larger than the minimum printable feature, but smaller than a minimum recommended feature for a print material, and a set of regions formed of features larger than the minimum printable feature and the minimum recommended feature.

10. A system for assessing three dimensional (3D) printability of a 3D model, said system comprising:
at least one processor configured to:
receive or generate slices of the 3D model, the slices representing two dimensional (2D) solids of the 3D model to be printed in corresponding print layers; and

simulate printing of the slices to identify corresponding printable slices, wherein the at least one processor is further configured to:
simulate printing of each of the slices to identify a set of regions of the slice formed of features larger, smaller, or of equal size than a user-defined feature.

11. A system for assessing three dimensional (3D) printability of a 3D model, said system comprising:
at least one processor configured to:
receive or generate slices of the 3D model, the slices representing two dimensional (2D) solids of the 3D model to be printed in corresponding print layers;

simulate printing of the slices to identify corresponding printable slices;
identify deviations between the slices and the corresponding printable slices; and
display the deviations to a user on a display device.

12. The system according to claim 11 , wherein the at least one processor includes a plurality of processors, and wherein the plurality of processors are configured to simultaneously simulate printing of a plurality of the slices in parallel to identify corresponding printable slices.

13. The system according to claim 11 , wherein the at least one processor includes a plurality of processors, and wherein the plurality of processors are configured to simultaneously simulate printing of a plurality of the slices in parallel to identify corresponding printable slices.

14. A method for assessing three dimensional (3D) printability of a 3D model, said method comprising:
receiving or generating by at least one processor slices of the 3D model, the slices representing two dimensional (2D) solids of the 3D model to be printed in corresponding print layers;
simulating by the at least one processor printing of the slices to identify corresponding printable slices;
identifying deviations between the slices and the corresponding printable slices; and
displaying the deviations to a user on a display device.

15. The method according to claim 14 , further including:
generating one of the slices by intersecting a 2D plane with its normal parallel to a build orientation of the 3D model at a height of the corresponding print layer.

16. The method according to claim 14 , further including:
sampling a rotation space of the 3D model to generate a set of build orientations of the 3D model;
optimizing an objective function related to build orientation to identify a best build orientation of the set; and
adaptively sampling the best build orientation in a rotation space until convergence of the objective function to identify an optimal build orientation.

17. The method according to claim 14 , wherein the simulating simulates printing of each of the slices to identify a corresponding printable slice by translating a feature model representing a smallest printable feature within a boundary of the slice or along a user-defined tool path.

18. The method according to claim 17 , wherein the translating is performed on a boundary representation of the slice.

19. The method according to claim 17 , wherein the translating is performed on an image representation of the slice.

Assignees

• Palo Alto Res Ct Inc

Inventors

• Nelaturi Saigopal
• Kim Walter
• Rangarajan Arvind
• Kurtoglu Tolga

Classifications

• G06T17/10

  Constructive solid geometry [CSG] using solid primitives, e.g. cylinders, cubes · CPC title

• B33Y50/00

  Data acquisition or data processing for additive manufacturing · CPC title

• B29C64/386

  Data acquisition or data processing for additive manufacturing · CPC title

• G06F30/20 Primary

  Design optimisation, verification or simulation (optimisation, verification or simulation of circuit designs G06F30/30) · CPC title

• G06F2119/18

  Manufacturability analysis or optimisation for manufacturability · CPC title