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    METHOD FOR MONITORING 3D PRINTING EQUIPPED WITH 3D PRINTING SLICER AND RECURSIVE LOOP STRUCTURE
    11.
    发明申请
    METHOD FOR MONITORING 3D PRINTING EQUIPPED WITH 3D PRINTING SLICER AND RECURSIVE LOOP STRUCTURE 审中-公开

    公开(公告)号：US20200023586A1

    公开(公告)日：2020-01-23

    申请号：US16499370

    申请日：2018-03-27

    Applicant: Korea Electronics Technology Institute

    Inventor： Hwa Seon SHIN ,  Sung Hwan CHUN ,  Hye In LEE

    IPC: B29C64/386

    Abstract: Provided is a method for monitoring 3D printing equipped with a 3D printing slicer and a recursive loop structure. A 3D printing method according to an embodiment of the present invention sets up a slicing environment for 3D printing of a 3D model, generates a mechanical code by performing slicing according to the setup environment, monitors the status of the 3D printing according to the generated mechanical code, and, depending on the monitoring result, determines whether or not to re-perform the setup and subsequent steps. Accordingly, by semi- or fully automating the 3D printing engineering process, the time and effort for engineering performance involving human participation are reduced, and the human resource is concentrated on a more important area, such that the effects of enhancing the 3D printing output quality and assuring the quality can be expected.

    METHOD FOR MODIFYING DESIGN ON BASIS OF ADDITIVE CROSS-SECTION OUTLINE FOR 3D PRINTING
    13.
    发明公开
    METHOD FOR MODIFYING DESIGN ON BASIS OF ADDITIVE CROSS-SECTION OUTLINE FOR 3D PRINTING 审中-公开

    公开(公告)号：US20240005620A1

    公开(公告)日：2024-01-04

    申请号：US18038785

    申请日：2021-11-03

    Applicant: Korea Electronics Technology Institute

    Inventor： Hye In LEE ,  Hwa Seon SHIN ,  Sung Hwan CHUN ,  Sung Hun PARK

    IPC: G06T19/20 ,  G06T17/20 ,  B33Y50/00 ,  B29C64/386

    CPC classification number: G06T19/20 ,  G06T17/20 ,  B33Y50/00 ,  B29C64/386 ,  G06T2219/2021

    Abstract: Provided is a method for modifying a design on the basis of an additive cross-section outline for 3D printing of an additive manufacturing method. The method for modifying a design on the basis of an additive cross-section outline according to an embodiment of the present invention comprises the steps of: slicing a 3D model into a plurality of 2D layers; calculating a difference region between a first layer and a second layer that is a lower layer adjacent to the first layer; calculating a modified outline that minimizes a region required for support by reducing the outline of the difference region; and merging the modified outline and the outline of the second layer. Accordingly, a design can be modified with fewer calculation processes compared to the prior art, models can be modified for additive manufacturing without additional design knowledge, and since the design has been modified to minimize the region required for support, the amount of support can be reduced, thereby increasing material or printing time efficiency, and strengthening a design structure.

    SLICING 2D DATA-BASED PATTERN APPLICATION METHOD FOR REDUCING BINDER USAGE AMOUNT IN SAND BINDER JETTING
    14.
    发明申请
    SLICING 2D DATA-BASED PATTERN APPLICATION METHOD FOR REDUCING BINDER USAGE AMOUNT IN SAND BINDER JETTING 有权

    公开(公告)号：US20220410485A1

    公开(公告)日：2022-12-29

    申请号：US17780206

    申请日：2020-11-10

    Applicant: Korea Electronics Technology Institute

    Inventor： Hye In LEE ,  Sung Hun PARK ,  Hwa Seon SHIN ,  Sung Hwan CHUN ,  Jin Min JANG

    IPC: B29C64/386 ,  B33Y50/02 ,  G06T3/00

    Abstract: Provided is a slicing 2D data-based pattern application method for generating an output code in which the inside of a model is filled with a pattern, so as to reduce a binder usage amount and maintain a strength and a shape in sand binder jetting additive manufacturing. A slicing 2D data-based pattern application method according to an embodiment of the present invention comprises the steps of: generating 2D data by slicing an output model; generating an inner pattern in at least one of layers forming an output model in consideration of the set thickness of the layers and the outer thickness thereof and generating an output code by applying the generated inner pattern. Therefore, the cost of producing an additive manufacturing output can be reduced by reducing the binder usage amount through the application of the inner pattern. In addition, reducing the binder usage amount enables a mold to be destroyed with less force than conventionally used, can increase the proportion of molding sand reuse by reducing the binder usage amount, and can reduce recovery treatment costs of the molding sand. Furthermore, casting defects due to increased ventilation can be reduced.

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