US 12,280,427 B2
Lamination molding apparatus, molding state estimation system, molding state estimation method, molding state estimation program, and learning method of learning model for molding state estimation
Masahiro Takano, Kanazawa (JP); Yuta Yoshida, Kanazawa (JP); Hiroyasu Miyakawa, Kanazawa (JP); Shuji Okazaki, Yokohama (JP); Ichiro Araie, Yokohama (JP); and Yasuyuki Miyashita, Yokohama (JP)
Assigned to Sodick Co., Ltd., Yokohama (JP)
Filed by Sodick Co., Ltd., Kanagawa (JP)
Filed on Sep. 21, 2021, as Appl. No. 17/480,557.
Claims priority of application No. 2020-176102 (JP), filed on Oct. 20, 2020.
Prior Publication US 2022/0118520 A1, Apr. 21, 2022
Int. Cl. B33Y 30/00 (2015.01); B22F 10/80 (2021.01); B22F 12/41 (2021.01); B33Y 50/00 (2015.01); G06N 20/00 (2019.01); G06T 7/00 (2017.01)
CPC B22F 10/80 (2021.01) [B22F 12/41 (2021.01); B33Y 30/00 (2014.12); B33Y 50/00 (2014.12); G06N 20/00 (2019.01); G06T 7/0004 (2013.01); G06T 2207/20081 (2013.01); G06T 2207/30136 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A system for estimating a molding state in a manufacturing process of a lamination molded object, comprising:
an image acquisition unit comprising a camera; and
an analysis unit,
wherein the lamination molded object is manufactured by repeating a material layer forming step of forming a material layer by supplying material powder onto a molding region and a solidified layer forming step of forming a solidified layer by irradiating the material layer with a laser beam,
the image acquisition unit is configured to acquire, in real time, image data of a spatter generated around a molten pool formed by irradiation on the lamination molded object with the laser beam as the lamination molded object undergoes manufacturing, said spatter comprising a quantity of particles scattered from the molten pool or from the surroundings of the molten pool during the irradiation with the laser beam, and
the analysis unit is configured to analyze the image data to estimate, in real time, a parameter representing the molding state, wherein the parameter includes a virtual porosity, the virtual porosity being a virtual value of a porosity of the lamination molded object.