公开(公告)号：US20220163943A1

公开(公告)日：2022-05-26

申请号：US17105505

申请日：2020-11-26

Applicant: Industrial Technology Research Institute

Inventor： Wai-Kwuen Choong ,  Kai-Yuan Teng ,  Ching-Chih Lin ,  I-Chun Lai ,  Tsung-Wen Tsai ,  De-Yau Lin

IPC: G05B19/4061 ,  G06F30/20 ,  B33Y50/00

Abstract: A recoater collision prediction and calibration method for additive manufacturing and a system thereof are provided. The recoater collision prediction and calibration method includes the following steps: loading a printing image file to generate a simulated printing object according to the printing image file; performing a process thermal stress simulation on the simulated printing object to obtain a plurality of simulated deformation variables respectively corresponding to a plurality of prediction results of the simulated printing object in a vertical direction on each layer; obtaining an experimental collision height of an experimental printed object; selecting one of the plurality of simulated deformation variables according to the experimental collision height; calculating a recoater tolerance according to the one of the plurality of simulated deformation variables; calibrating a collision risk formula according to the recoater tolerance; and predicting a collision risk value between the simulated printing object and a recoater according to the collision risk formula.

公开(公告)号：US11826825B2

公开(公告)日：2023-11-28

申请号：US17385892

申请日：2021-07-26

Applicant: Industrial Technology Research Institute

Inventor： Tsung-Wen Tsai ,  Wai-Kwuen Choong ,  Tzong-Ming Wu ,  Ji-Bin Horng

IPC: B22F10/85 ,  G05B13/04 ,  B23K26/342 ,  B33Y50/00

CPC classification number: B22F10/85 ,  B23K26/342 ,  G05B13/042 ,  B33Y50/00

Abstract: A parameter analysis method and a parameter analysis system for metal additive manufacturing are provided. The parameter analysis method includes: establishing a powder bed model; simulating a multi-track melting result of the powder bed model according to a plurality of laser parameters to generate a melting model; analyzing the melting model to calculate a plurality of position divergences of a plurality of melting powders of the melting model, and defining a plurality of melting surface powders according to the position divergences; analyzing the melting surface powders to calculate a surface average curvature of the melting model; and determining a laser hatch in the laser parameters allows metal additive manufacturing to meet a quality as needed according to whether the surface average curvature is between a first curvature threshold and a second curvature threshold, the first curvature threshold being smaller than the second curvature threshold.

公开(公告)号：US11733672B2

公开(公告)日：2023-08-22

申请号：US17105505

申请日：2020-11-26

Applicant: Industrial Technology Research Institute

Inventor： Wai-Kwuen Choong ,  Kai-Yuan Teng ,  Ching-Chih Lin ,  I-Chun Lai ,  Tsung-Wen Tsai ,  De-Yau Lin

IPC: G05B19/4061 ,  G06F30/20 ,  B33Y50/00 ,  G06F113/10 ,  G06F119/08

CPC classification number: G05B19/4061 ,  B33Y50/00 ,  G06F30/20 ,  G05B2219/33286 ,  G05B2219/40339 ,  G05B2219/49008 ,  G06F2113/10 ,  G06F2119/08

Abstract: A recoater collision prediction and calibration method for additive manufacturing and a system thereof are provided. The recoater collision prediction and calibration method includes the following steps: loading a printing image file to generate a simulated printing object according to the printing image file; performing a process thermal stress simulation on the simulated printing object to obtain a plurality of simulated deformation variables respectively corresponding to a plurality of prediction results of the simulated printing object in a vertical direction on each layer; obtaining an experimental collision height of an experimental printed object; selecting one of the plurality of simulated deformation variables according to the experimental collision height; calculating a recoater tolerance according to the one of the plurality of simulated deformation variables; calibrating a collision risk formula according to the recoater tolerance; and predicting a collision risk value between the simulated printing object and a recoater according to the collision risk formula.

公开(公告)号：US20220161329A1

公开(公告)日：2022-05-26

申请号：US17385892

申请日：2021-07-26

Applicant: Industrial Technology Research Institute

Inventor： Tsung-Wen Tsai ,  Wai-Kwuen Choong ,  Tzong-Ming Wu ,  Ji-Bin Horng

IPC: B22F10/85 ,  B23K26/342 ,  G05B13/04

Abstract: A parameter analysis method and a parameter analysis system for metal additive manufacturing are provided. The parameter analysis method includes: establishing a powder bed model; simulating a multi-track melting result of the powder bed model according to a plurality of laser parameters to generate a melting model; analyzing the melting model to calculate a plurality of position divergences of a plurality of melting powders of the melting model, and defining a plurality of melting surface powders according to the position divergences; analyzing the melting surface powders to calculate a surface average curvature of the melting model; and determining a laser hatch in the laser parameters allows metal additive manufacturing to meet a quality as needed according to whether the surface average curvature is between a first curvature threshold and a second curvature threshold, the first curvature threshold being smaller than the second curvature threshold.