Support structures design device and method, program, structure forming apparatus, and structure manufacturing method

Patent metadata

Field	Value
Publication number	US-2017136709-A1
Application number	US-201615283596-A
Country	US
Kind code	A1
Filing date	Oct 3, 2016
Priority date	Nov 18, 2015
Publication date	May 18, 2017
Grant date	—

Abstract

There are provided a support structures design device and method, a non-transitory computer readable recording medium storing a program, a structure forming apparatus, and a structure manufacturing method capable of appropriately adding the data of a support structures to the three-dimensional data of a luminal structure. The up-and-down direction of a luminal structure is determined, the core line of the luminal structure is extracted, a lowermost point of a cross section of the luminal structure by a plane perpendicular to a tangential direction at a point, which corresponds to each of a plurality of points on the core line, on a projected core line is extracted as a support point, and three-dimensional data is generated by adding the data of a support structures for supporting the support point to three-dimensional data.

First claim

What is claimed is:

1 . A support structures design device, comprising:
a data acquisition unit that acquires three-dimensional data of a luminal structure to be printed by lamination using a three-dimensional printer; an up-and-down direction determination unit that determines an up-and-down direction of the luminal structure in case of performing printing in the three-dimensional printer; a core line extraction unit that extracts a core line of the luminal structure; a support point extraction unit that extracts a lowermost point of a cross section of the luminal structure by a plane perpendicular to a tangential direction at a point, which corresponds to each of a plurality of points on the core line, on a projected core line obtained by projecting the core line in the up-and-down direction, as a support point, for each of the plurality of points on the core line; and a data generation unit that generates three-dimensional data by adding data of a support structures for supporting the support point to the three-dimensional data.

2 . The support structures design device according to claim 1 ,
wherein the support point extraction unit extracts the support point for points of all voxels on the core line.

3 . The support structures design device according to claim 1 , further comprising:
a determination unit that determines whether or not the support structures for the extracted support point is required based on an angle between the core line and the up-and-down direction, wherein the data generation unit adds the data of the support structures for the support point for which it is determined that the support structures is required.

4 . The support structures design device according to claim 2 , further comprising:
a determination unit that determines whether or not the support structures for the extracted support point is required based on an angle between the core line and the up-and-down direction, wherein the data generation unit adds the data of the support structures for the support point for which it is determined that the support structures is required.

5 . The support structures design device according to claim 1 ,
wherein, in a case where a minimum point other than the lowermost point is present on the cross section, the support point extraction unit extracts the minimum point as a support point.

6 . The support structures design device according to claim 2 ,
wherein, in a case where a minimum point other than the lowermost point is present on the cross section, the support point extraction unit extracts the minimum point as a support point.

7 . The support structures design device according to claim 3 ,
wherein, in a case where a minimum point other than the lowermost point is present on the cross section, the support point extraction unit extracts the minimum point as a support point.

8 . The support structures design device according to claim 4 ,
wherein, in a case where a minimum point other than the lowermost point is present on the cross section, the support point extraction unit extracts the minimum point as a support point.

9 . The support structures design device according to claim 5 ,
wherein, in a case where a distance between the lowermost point and the minimum point is equal to or greater than a threshold distance, the support point extraction unit extracts the minimum point as the support point.

10 . The support structures design device according to claim 6 ,
wherein, in a case where a distance between the lowermost point and the minimum point is equal to or greater than a threshold distance, the support point extraction unit extracts the minimum point as the support point.

11 . The support structures design device according to claim 7 ,
wherein, in a case where a distance between the lowermost point and the minimum point is equal to or greater than a threshold distance, the support point extraction unit extracts the minimum point as the support point.

12 . The support structures design device according to claim 8 ,
wherein, in a case where a distance between the lowermost point and the minimum point is equal to or greater than a threshold distance, the support point extraction unit extracts the minimum point as the support point.

13 . The support structures design device according to claim 5 ,
wherein, in a case where a maximum point is present between the lowermost point and the minimum point, the support point extraction unit extracts the minimum point as the support point.

14 . The support structures design device according to claim 9 ,
wherein, in a case where a maximum point is present between the lowermost point and the minimum point, the support point extraction unit extracts the minimum point as the support point.

15 . The support structures design device according to claim 1 ,
wherein the support structures is a member having a structure in which at least a part thereof is laminated in the up-and-down direction.

16 . A structure forming apparatus, comprising:
the support structures design device according to claim 1 ; and a three-dimensional printer that performs printing by laminating a composition material based on the generated three-dimensional data.

17 . The structure forming apparatus according to claim 16 ,
wherein the three-dimensional printer prints the support structures and a structure corresponding to the luminal structure by laminating the same composition material.

18 . A support structures design method, comprising:
a data acquisition step of acquiring three-dimensional data of a luminal structure to be printed by lamination using a three-dimensional printer; an up-and-down direction determination step of determining an up-and-down direction of the luminal structure in case of performing printing in the three-dimensional printer; a core line extraction step of extracting a core line of the luminal structure; a support point extraction step of extracting a lowermost point of a cross section of the luminal structure by a plane perpendicular to a tangential direction at a point, which corresponds to each of a plurality of points on the core line, on a projected core line obtained by projecting the core line in the up-and-down direction, as a support point, for each of the plurality of points on the core line; and a data generation step of generating three-dimensional data by adding data of a support structures for supporting the support point to the three-dimensional data.

19 . A structure manufacturing method, comprising:
a data acquisition step of acquiring three-dimensional data of a luminal structure to be printed by lamination using a three-dimensional printer; an up-and-down direction determination step of determining an up-and-down direction of the luminal structure in case of performing printing in the three-dimensional printer; a core line extraction step of extracting a core line of the luminal structure; a support point extraction step of extracting a lowermost point of a cross section of the luminal structure by a plane perpendicular to a tangential direction at a point, which corresponds to each of a plurality of points on the core line, on a projected core line obtained by projecting the core line in the up-and-down direction, as a support point, for each of the plurality of points on the core line; a data generation step of generating three-dimensional data by adding data of a support structures for supporting the support point to the three-dimensional data; and a printing step of pe

Assignees

• Fujifilm Corp

Inventors

• Sagawa Masafumi

Classifications

• B29C64/40 Primary

  Structures for supporting 3D objects during manufacture and intended to be sacrificed after completion thereof · CPC title

• B33Y50/00

  Data acquisition or data processing for additive manufacturing · CPC title

• B33Y30/00

  Apparatus for additive manufacturing; Details thereof or accessories therefor · CPC title

• G09B23/30

  Anatomical models {(G09B23/281 - G09B23/288 take precedence)} · CPC title

• B33Y80/00

  Products made by additive manufacturing · CPC title