3D PRINTING METHOD WITH ADVANCED GAS FLOW
    84.
    发明申请

    公开(公告)号:WO2022084514A1

    公开(公告)日:2022-04-28

    申请号:PCT/EP2021/079355

    申请日:2021-10-22

    发明人: LINDSTAM, Johan

    摘要: The present invention refers to a method of utilizing a 3D printer to improve the insight in the gas flow characteristics and the possibilities to predict and optimize 3D prints provided by such 3D printer. Furthermore, the present invention refers to a computer program product utilized to execute such method. Additionally, the present invention refers to a base plate beneficially utilized herein. Additionally, the present invention refers to a 3D printing device adapted to realize such method. Furthermore, the present invention refers to a control device utilized for such method. Additionally, the present invention refers to an upgrade kit containing such control device. Furthermore, the present invention refers to a use of a temperature profile acquired by an inventive method to adapt a 3D printing process.

    IMPROVEMENTS IN OR RELATING TO AN OPTICAL SCANNER FOR DIRECTING ELECTROMAGNETIC RADIATION TO DIFFERENT LOCATIONS WITHIN A SCAN FIELD

    公开(公告)号:WO2022008885A1

    公开(公告)日:2022-01-13

    申请号:PCT/GB2021/051698

    申请日:2021-07-05

    申请人: RENISHAW PLC

    摘要: A method and apparatus for determining an alignment of an optical scanner (106a, 106c) for directing an electromagnetic beam to locations within a scan field. The method may comprise locating a reference element (113) within the scan field of the optical scanner (106a, 106c) and controlling the optical scanner (106a, 106c) to cause the electromagnetic beam to be directed to a plurality of different points in the scan field, including at least one point on the reference element (113). Reflected electromagnetic radiation is detected. The method may comprise determining when the electromagnetic beam is directed to a reference position in the scan field given by the reference element (113) from a comparison of an intensity of the detected electromagnetic radiation for the different points and determining a corresponding demand signal that causes the optical scanner (106a, 106c) to direct the electromagnetic beam to the reference position.

    MELT POOL CONTROL IN ADDITIVE MANUFACTURING SYSTEMS

    公开(公告)号:WO2021221786A1

    公开(公告)日:2021-11-04

    申请号:PCT/US2021/020593

    申请日:2021-03-03

    申请人: VULCANFORMS INC.

    摘要: Systems and methods for additive manufacturing are described. In some embodiments, a method of controlling a weld height in an additive manufacturing process includes determining a desired melt pool width based, at least in part, on a desired weld height; selectively activating one or more laser energy sources based, at least in part, on the desired melt pool width; and melting a portion of a layer of material on a build surface via exposure to laser energy from the one or more activated laser energy sources to form a melt pool on the build surface having the desired melt pool width. Systems and methods to the use of staggered laser energy sources are also described.