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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11571750 B1

PDFFull Text
Date of Patent:
Feb. 07, 2023

Filed:

Jan. 11, 2021

Lamination molding apparatus and method for producing three-dimensional molded object

Applicant:

Sodick Co., Ltd., Kanagawa, JP;

Inventor:

Yasuyuki Miyashita, Kanagawa, JP;

Assignee:

Sodick Co., Ltd., Kanagawa, JP;

Attorney:

JCIPRNET

Primary Examiner:

Michelle M Iacoletti

Assistant Examiner:

Carlos Perez-Guzman

Int. Cl.
CPC ...
B22F 10/366 (2021.01); B22C 19/02 (2006.01); B22F 12/90 (2021.01); B22C 5/04 (2006.01); B33Y 50/02 (2015.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B22F 12/33 (2021.01); B22F 12/49 (2021.01); B22F 12/41 (2021.01); B22F 12/48 (2021.01); B22C 23/00 (2006.01); G01J 1/42 (2006.01); B22F 10/28 (2021.01);
U.S. Cl.
CPC ...
B22F 12/90 (2021.01); B22C 5/0418 (2013.01); B22C 19/02 (2013.01); B22C 23/00 (2013.01); B22F 10/366 (2021.01); B22F 12/33 (2021.01); B22F 12/41 (2021.01); B22F 12/48 (2021.01); B22F 12/49 (2021.01); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 50/02 (2014.12); G01J 1/4257 (2013.01); B22F 10/28 (2021.01);
Abstract

A lamination molding apparatus includes a molding room, a chamber, a chamber window, a molding table, a molding table driving device, surrounding walls, an irradiation device, a measuring unit, and a controller. The measuring unit includes a first measuring device acquiring a measured value of a light intensity, and a second measuring device acquiring a value of a beam diameter, and measures laser beams outputted based on set values of light intensity during molding. The controller determines an abnormality has occurred when a slope of a linear function obtained from a relationship between the measured value of the light intensity and the value of the beam diameter at a predetermined height is out of a predetermined range, or when a slope of a linear function obtained from a relationship between the measured value of the light intensity and a value of a focal position is out of a predetermined range.

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