公开(公告)号：US20220262071A1

公开(公告)日：2022-08-18

申请号：US17623104

申请日：2020-11-10

Applicant: Korea Electronics Technology Institute

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

IPC: G06T17/20

Abstract: Provided is a method for generating a hollow structure of a 3D model on the basis of a 2D laminated cross-sectional outline to reduce the amount of using a material or the weight of a printed matter during laminating and manufacturing. The method for generating a hollow structure based on a 2D laminated cross-sectional outline, according to an embodiment of the present invention, comprises the steps of: slicing the 3D model; generating a hollow structure outline on the basis of the result of the slicing; detecting an overhang area between adjacent hollow structure outlines; recalculating the hollow structure outline according to the result of detecting the overhang area; and generating a hollow structure mesh on the basis of the recalculated hollow structure outline. Accordingly, because 2D laminated cross-sectional data is used, a hollow structure can be generated without separate data processing, thereby reducing a calculation burden. In addition, because the hollow structure is processed so that an overhang area is not generated when generating the hollow structure, a support is not needed therein, thereby making post-processing easy.

公开(公告)号：US20240232783A1

公开(公告)日：2024-07-11

申请号：US18572514

申请日：2022-12-14

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

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

IPC: G06Q10/067 ,  G06F8/35

CPC classification number: G06Q10/067 ,  G06F8/35

Abstract: A method and a system for providing a domain-based process framework are provided. The method for providing a domain-specific process framework, according to one embodiment of the present invention, comprises steps in which: a process framework provision system generates a process model on the basis of a pre-stored meta-model (primitive) and a relationship model (relation); and the process framework provision system distributes the generated process model. Therefore, a process framework capable of reflecting domain knowledge is introduced so that different business processes between companies can be normalized by domain.

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.

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.

公开(公告)号：US20220055307A1

公开(公告)日：2022-02-24

申请号：US17275373

申请日：2020-02-19

Applicant: Korea Electronics Technology Institute

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

IPC: B29C64/386 ,  B29C64/40 ,  B33Y50/00 ,  G05B19/4099

Abstract: Provided is a 3D printing slicing method for solving a quantization error problem. A 3D model slicing method according to an embodiment of the present invention comprises: receiving, as input, data of a 3D model to be three-dimensionally printed; calculating the height of the input 3D model; revising the height of the 3D model on the basis of a result of the calculation; and slicing the 3D model having the revised height. Accordingly, the present invention can easily and reliably solve a slicing quantization error problem even without changing the lamination thickness of a 3D printer.

公开(公告)号：US20210362426A1

公开(公告)日：2021-11-25

申请号：US17256880

申请日：2019-08-29

Applicant: Korea Electronics Technology Institute

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

IPC: B29C64/386 ,  B33Y50/00 ,  G06F30/10 ,  G06T7/12 ,  G06T17/10

Abstract: Provided is a method for creating a 2D slicing polyline based support structure for 3D printing. A method for creating a support structure according to an embodiment of die present invention comprises: slicing a 3D model into a plurality of 2D layers; comparing the 2D layers to calculate a support position for each of the 2D layers; and creating supports at the calculated positions. As a result, the supports can be created at precise and meaningful positions, a stable output is possible, and additional slicing work is not necessary on the created supports, whereby improvement of speed can be expected.