US 12,390,857 B2
Laser powder bed fusion forming device and method for large-size ring/frame-shaped metal piece
Xiaoyan Zeng, Hubei (CN); Kaiwen Wei, Hubei (CN); Youguang Fan, Hubei (CN); and Mengna Liu, Hubei (CN)
Assigned to HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY, Hubei (CN)
Filed by HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY, Hubei (CN)
Filed on Feb. 25, 2022, as Appl. No. 17/680,324.
Application 17/680,324 is a continuation of application No. PCT/CN2020/117719, filed on Sep. 25, 2020.
Claims priority of application No. 201910843575.2 (CN), filed on Sep. 6, 2019.
Prior Publication US 2022/0203450 A1, Jun. 30, 2022
Int. Cl. B22F 10/28 (2021.01); B22F 10/322 (2021.01); B22F 10/36 (2021.01); B22F 12/30 (2021.01); B22F 12/41 (2021.01); B22F 12/45 (2021.01); B22F 12/49 (2021.01); B22F 12/70 (2021.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 40/00 (2020.01); B22F 10/366 (2021.01); B22F 10/77 (2021.01)
CPC B22F 10/28 (2021.01) [B22F 10/322 (2021.01); B22F 10/36 (2021.01); B22F 12/30 (2021.01); B22F 12/41 (2021.01); B22F 12/45 (2021.01); B22F 12/49 (2021.01); B22F 12/70 (2021.01); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 40/00 (2014.12); B22F 10/366 (2021.01); B22F 10/77 (2021.01); B22F 2998/10 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A laser powder bed fusion forming device for a large-size ring/frame-shaped metal piece, comprising: a forming cylinder, a substrate, a galvanometer array, and at least one dust removal module, wherein
the forming cylinder is ring/frame-shaped with an outer wall and an inner wall surrounded by the outer wall and is adapted to inner and outer contours of the large-size ring/frame-shaped metal piece to be formed, the substrate is also ring/frame-shaped and is arranged inside the forming cylinder, wherein the substrate is surrounded by the outer wall of the forming cylinder, the inner wall of the forming cylinder is surrounded by the substrate, and the outer wall and the inner wall are both in circular shapes or polygonal shapes,
the galvanometer array is located above the forming cylinder and comprises a plurality of galvanometer systems, all corresponding scanning areas of the galvanometer systems cover an upper surface of the forming cylinder or all scanning areas cover the upper surface of the forming cylinder through movement of the galvanometer systems, such that simultaneous selective melting forming of the large-size ring or frame-shaped metal piece with a plurality of laser beams is implemented,
the at least one dust removal module is located between the forming cylinder and the galvanometer array and is used for forming a circulating air flow field which is distributed along a radial direction of the inner wall or distributed radially along a circumscribed circle of a horizontal cross-section of the inner wall or distributed along a normal direction of each side of the inner wall, or for forming segments of a plurality of circulating air flow fields which are distributed in a circumferential direction of each side of the inner wall to accordingly achieve removal of smoke and dust.