公开(公告)号：US20180147779A1

公开(公告)日：2018-05-31

申请号：US15123455

申请日：2016-03-25

Applicant: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING

Inventor： Masahiro YAMADA ,  Takayuki KATAOKA

IPC: B29C64/153 ,  B29C64/205 ,  B29C64/245 ,  B29C64/268 ,  B33Y30/00

CPC classification number: B29C64/153 ,  B22F3/1055 ,  B22F2003/1056 ,  B22F2003/1058 ,  B23K15/0086 ,  B23K15/0093 ,  B23K15/06 ,  B29C64/205 ,  B29C64/245 ,  B29C64/268 ,  B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  Y02P10/295

Abstract: This invention effectively suppresses a decrease in shaping accuracy based on a difference in thermal expansion coefficient between a three-dimensional laminated and shaped object and shaping plate. A three-dimensional laminating and shaping apparatus includes a linear funnel that recoats the material of a three-dimensional laminated and shaped object. The three-dimensional laminating and shaping apparatus also includes an electron gun that generates an electron beam. The three-dimensional laminating and shaping apparatus further includes a shaping base material on which the three-dimensional laminated and shaped object is to be shaped. The thermal expansion coefficients of the shaping base material and three-dimensional laminated and shaped object are equal or have a difference not more than a predetermined value.