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.:
Date of Patent:
Apr. 14, 2015
Filed:
May. 14, 2010
Satoshi Abe, Osaka, JP;
Norio Yoshida, Nara, JP;
Yoshikazu Higashi, Shiga, JP;
Isao Fuwa, Osaka, JP;
Satoshi Abe, Osaka, JP;
Norio Yoshida, Nara, JP;
Yoshikazu Higashi, Shiga, JP;
Isao Fuwa, Osaka, JP;
Abstract
An object of the present invention is to easily eliminate fumes inside a chamber, so as to improve a positional accuracy of irradiation with a light beam and a machining accuracy in a method for manufacturing a three-dimensional shaped object. A stacked-layers forming deviceincludes a powder layer forming unit, a light beam irradiating unit, a basewhich is fixed and on which a powder layeris formed, a lifting/lowering framewhich surrounds the circumference of the baseand is freely capable of being lifted and lowered, a cover framewhich has a windowallowing transmission of light beam in its top surface, and whose bottom surface is opened, and which is disposed on the lifting/lowering frameto form a chamber C, and a gas tankfor supplying an ambient gas. The lifting/lowering frameis lowered to reduce the volume of the chamber C, so as to discharge fumes generated inside the cover frame, which performs replacement with the ambient gas. Since the volume of the chamber C is reduced, it is possible to easily eliminate the fumes, which makes it possible to improve the positional accuracy of irradiation with the light beam L, and the machining accuracy.