Abstract

A method for controlling introduction of different kinds of materials for lamination includes: a tool path generating step of slicing three-dimensional image data into multiple slices and determining a nozzle movement path; a sensitivity applying step of deriving the sensitivity of different kinds of materials with regard to an objective function through numerical analysis and applying same to the three-dimensional image data or tool path; and a lamination control step of supplying, mixing, and laminating different kinds of materials. The sensitivity applying step includes: an objective function designating step of determining an objective function according to the target of optimization of physical characteristics held by the shape of three-dimensional image data; a numerical analysis step of deriving the sensitivity regarding materials by performing numerical analysis according to the objective function; and a mapping step of mapping the sensitivity regarding materials to the three-dimensional image data or tool path.

IPC Classes  ?

• B22F 10/85 - Data acquisition or data processing for controlling or regulating additive manufacturing processes
• B22F 10/25 - Direct deposition of metal particles, e.g. direct metal deposition [DMD] or laser engineered net shaping [LENS]
• B22F 12/58 - Means for feeding of material, e.g. heads for changing the material composition, e.g. by mixing
• B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

Abstract

The present invention relates to a method for forming a multi-material structure having improved durability through metal additive manufacturing, the method comprising: a step for supplying a first material onto a surface through a nozzle that moves along a tool path, and melting the first material to laminate a first layer; and a step for supplying a second material onto another surface through a nozzle that moves along a tool path, and melting the second material to laminate a second layer, wherein the first layer is formed as a metal layer and the second layer is formed as a metal oxide layer.

IPC Classes  ?

• B22F 10/12 - Formation of a green body by photopolymerisation, e.g. stereolithography [SLA] or digital light processing [DLP]
• B22F 10/22 - Direct deposition of molten metal
• B22F 12/53 - Nozzles
• B22F 10/32 - Process control of the atmosphere, e.g. composition or pressure in a building chamber
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
• B33Y 70/00 - Materials specially adapted for additive manufacturing
• B33Y 80/00 - Products made by additive manufacturing

Abstract

The present invention relates to a method for controlling introduction of different kinds of materials for lamination and, more specifically, to a method for controlling introduction of different kinds of materials for lamination, the method comprising: a tool path generating step of slicing provided three-dimensional image data into multiple slices and determining a nozzle movement path; a sensitivity applying step of deriving the sensitivity of different kinds of materials with regard to an objective function through numerical analysis and applying same to the three-dimensional image data or tool path; and a lamination control step of supplying, mixing, and laminating different kinds of materials. The sensitivity applying step comprises: an objective function designating step of determining an objective function according to the target of optimization of physical characteristics held by the shape of three-dimensional image data; a numerical analysis step of deriving the sensitivity regarding materials by performing numerical analysis according to the objective function; and a mapping step of mapping the sensitivity regarding materials to the three-dimensional image data or tool path. Accordingly, a tool path is generated by mapping the result of numerical analysis, and introduced materials are changed in real time according to the result of numerical analysis through a physical characteristic value database regarding materials used for lamination or the like. Introduced materials, which have conventionally been divided with regard to respective layers, can be changed in real time such that process defects are removed from an object generated through lamination with a 3D printer, and target physical characteristics can be implemented with minimized errors.

IPC Classes  ?

• B22F 12/58 - Means for feeding of material, e.g. heads for changing the material composition, e.g. by mixing
• B22F 12/53 - Nozzles
• B22F 12/55 - Two or more means for feeding material
• B22F 12/90 - Means for process control, e.g. cameras or sensors
• B22F 10/25 - Direct deposition of metal particles, e.g. direct metal deposition [DMD] or laser engineered net shaping [LENS]
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 30/00 - Apparatus for additive manufacturingDetails thereof or accessories therefor
• B33Y 50/00 - Data acquisition or data processing for additive manufacturing
• B33Y 70/10 - Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials