KR101627683B1 - A 3D printing apparatus possible for manufacturing a hollow body and a 3D printing method using the same - Google Patents

A 3D printing apparatus possible for manufacturing a hollow body and a 3D printing method using the same Download PDF

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Publication number
KR101627683B1
KR101627683B1 KR1020150163851A KR20150163851A KR101627683B1 KR 101627683 B1 KR101627683 B1 KR 101627683B1 KR 1020150163851 A KR1020150163851 A KR 1020150163851A KR 20150163851 A KR20150163851 A KR 20150163851A KR 101627683 B1 KR101627683 B1 KR 101627683B1
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South Korea
Prior art keywords
hollow body
support
heat source
metal
powder
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KR1020150163851A
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Korean (ko)
Inventor
박광석
박형기
김건희
이병수
강장원
김원래
김형균
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한국생산기술연구원
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    • B29C67/0085
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10Sintering only
    • B22F3/105Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
    • B29C67/0088
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B33ADDITIVE MANUFACTURING TECHNOLOGY
    • B33YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y30/00Apparatus for additive manufacturing; Details thereof or accessories therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B33ADDITIVE MANUFACTURING TECHNOLOGY
    • B33YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y50/00Data acquisition or data processing for additive manufacturing
    • B33Y50/02Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
    • B22F2003/1056
    • B22F2003/1057

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Engineering (AREA)
  • Powder Metallurgy (AREA)

Abstract

One embodiment of the present invention provides a metal 3D printing apparatus for performing molding by stacking a molding layer from an upper end to a lower end of a hollow body while raising a hollow body, and a 3D molding method using the same. A metal 3D printing apparatus capable of forming a hollow body according to an embodiment of the present invention includes a powder bed for storing metal powders, a heat source located at a side of the powder bed and forming heat of the metal powders to form respective molding layers, And a driving unit that is coupled to a support and a support for fixing the hollow body, and moves the support vertically or horizontally.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal 3D printing apparatus capable of forming a hollow body and a 3D forming method using the same,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal 3D printing apparatus capable of forming a hollow body and a 3D molding method using the same, and more particularly to a metal 3D printing apparatus capable of forming a hollow shape by stacking a molding layer from the top to the bottom of a hollow body while raising the hollow body A metal 3D printing device and a 3D forming method using the same.

In recent years, 3D printers that can produce products with only drawings have attracted much interest, which is called a new industrial revolution. 3D printers produce a three-dimensional product by layering the material one after another by continuously reconstructing a two-dimensional cross-section for a digitized three-dimensional product design.

Although the main material for 3D printing is synthetic resin, recently industrial plastics have been expanding into industrial plastics and metal powders.

Metal 3D printers can be classified into two broad categories. The first is Powder Bed Fusion (PBF). This method is a method in which a powder layer is laid on a powder bed having a certain area in a powder feeder, and a laser or an electron beam is selectively irradiated, and then melted and piled up one by one. The second is Directed Energy Deposition (DED). In this method, powders are supplied in a protective gas atmosphere in real time, and a high output laser is used to melt and laminate them immediately upon supply.

Korean Patent Laid-Open No. 10-2012-0128171 entitled "Three-dimensional Printing of Laminated Laser Welding Method of Metal Powder," hereinafter referred to as Prior Art 1), a work table is fixed in a vacuum chamber in a vacuum atmosphere, , The powder material printing tube is transferred to the Y axis and the Z axis and the height control plate of the powder material is moved in the Y axis and Z axis to perform the planarization of the powder material and the powder material printing tube, The control panel is slid to the vertical slide means and the horizontal Y-axis guide and is moved to the upper feed motor and the Y-axis feed motor. The laser output section is fed in the X-axis, Y-axis and Z- A three-dimensional printing method of a laser welding method in which a metal powder which is assembled by a slide and is moved by an upper feed motor and a Y-axis feed motor is laminated is disclosed.

In the prior art 1, the metal powder is scattered on a work table and melted and cured with a laser to form a shaping layer, and the above process is repeated while increasing the height of the metal powder with the powder material height regulating plate, Therefore, in the case of forming a hollow body, the metal powder is pierced into a mold in which the metal powder remains, thereby removing the remaining metal powder, thereby realizing a hollow structure. The first problem is that the shape is limited and the process is complicated .

The above-mentioned prior art 1 has a second problem that since the formed layer already formed is present in the metal powder layer and can not be irradiated with the laser, the positions of melting and curing by the laser are limited.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not intended to limit the invention to the precise form disclosed. There will be.

According to an aspect of the present invention, there is provided a powder bed for storing metal powders. A heat source positioned at a side of the powder bed and forming heat of the metal powder to form each of the molding layers; A support for fixing the hollow body with a joint portion joined to an upper end of the hollow body formed by the heat source portion; And a driving unit coupled to the support and moving the support in the up and down or left and right directions, wherein the heat source unit and the support relatively rotate, and a metal 3D printing device Lt; / RTI >

In the embodiment of the present invention, the hollow body may be formed by stacking from the top to the bottom according to the upward movement of the support.

In the embodiment of the present invention, a plurality of joints may be provided in the support.

In an embodiment of the present invention, the support may be prefabricated to fit the shape of the hollow body.

In the embodiment of the present invention, the support may be formed of the metal powder by the heat source unit before the hollow upper body molding.

In the embodiment of the present invention, the driving unit may vibrate to remove the metal powder remaining in the hollow body during the formation of the hollow body.

The metal powder may be at least one selected from the group consisting of Fe, Ni, Cr, Co, Ti, Al, Cu, ), Silver (Ag), platinum (Pt), palladium (Pd), molybdenum (Mo), magnesium (Mg), zinc (Zn), lead (Pb), tin ), And the like.

The metal powder may be at least one selected from the group consisting of Fe, Ni, Cr, Co, Ti, Al, Cu, ), Silver (Ag), platinum (Pt), palladium (Pd), molybdenum (Mo), magnesium (Mg), zinc (Zn), lead (Pb), tin ). ≪ / RTI >

In an embodiment of the present invention, the support may be formed of the same material as the hollow body.

In an embodiment of the present invention, the heat source unit may be formed of one of a ND: YAG laser, a CO 2 laser, or an optical fiber laser.

In an embodiment of the present invention, the heat source unit may be formed of an E-Beam device.

In the embodiment of the present invention, the heat source unit can move vertically or laterally and conically move.

In the embodiment of the present invention, the powder bed may vibrate so that the metal powder has a uniform distribution within the powder bed.

In the embodiment of the present invention, the powder bed may perform a relative rotational motion with the heat source unit or a relative rotational motion with the support.

In the embodiment of the present invention, the powder bed may move up and down to form a focus of the heat source on the surface of the metal powder.

In an embodiment of the present invention, the 3D printing apparatus of the present invention may further include a control unit for controlling the powder bed, the heat source unit, or the driving unit.

According to an aspect of the present invention, there is provided a method of manufacturing a hollow body, comprising the steps of: (i) preparing a support designed to fit the hollow body and combining the support with the driving unit; (Ii) starting molding from a predetermined joint provided in the support; (Iii) as the support moves up to the shaping layer thickness height, the shaping layer formed by the heat source of the heat source portion is stacked from the top to the bottom to form the hollow body; And (iv) separating the support and the hollow body from each other after the hollow body is completed. The present invention also provides a 3D molding method using the metal 3D printing apparatus capable of molding a hollow body.

In the embodiment of the present invention, the step of vibrating the driving unit to remove the metal powder remaining in the hollow body may be performed between the step (iii) and the step (iv) have.

In the embodiment of the present invention, the powder bed may be vibrated between the step (iii) and the step (iv) such that the metal powder has a uniform distribution within the powder bed. have.

Since the hollow body is fabricated by laminating the shaping layers from the upper end to the lower end of the hollow body while raising the support, the hollow body is molded, The first effect that the shape can be molded can be obtained.

The present invention has the second effect that the formed layer is formed from the upper end to the lower end of the hollow body so that the formed layer is not exposed to the outside and the positions of melting and curing by the heat source are not limited.

It should be understood that the effects of the present invention are not limited to the above effects and include all effects that can be deduced from the detailed description of the present invention or the configuration of the invention described in the claims.

1 is a schematic diagram illustrating a process start step of a metal 3D printing apparatus according to an embodiment of the present invention.
2 is a schematic diagram of an initial step of a metal 3D printing apparatus according to an embodiment of the present invention.
3 is a schematic diagram of an intermediate step of a metal 3D printing apparatus according to an embodiment of the present invention.
FIG. 4 is a schematic view of a stage in which a hollow body according to an embodiment of the present invention is completed.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when a part is referred to as being "connected" (connected, connected, coupled) with another part, it is not only the case where it is "directly connected" "Is included. Also, when an element is referred to as "comprising ", it means that it can include other elements, not excluding other elements unless specifically stated otherwise.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises" or "having" and the like refer to the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic view showing a process start step of a metal 3D printing apparatus according to an embodiment of the present invention. FIG. 2 is a schematic view of an initial step of a metal 3D printing apparatus according to an embodiment of the present invention. FIG. 4 is a schematic diagram illustrating a step in which a hollow body according to an embodiment of the present invention is completed. FIG. 4 is a schematic view of an intermediate step of a metal 3D printing apparatus according to an embodiment of the present invention.

Hereinafter, a plurality of bonding portions may be provided. In one embodiment, a support (not shown) having a first bonding portion 11, a second bonding portion 12, a third bonding portion 13 and a fourth bonding portion 14 10) will now be described.

3, a metal 3D printing apparatus capable of forming a hollow body includes a powder bed 30 for storing a metal powder 50, a heat generating unit 40 disposed on a side of the powder bed 30, for supplying heat to the metal powder 50, A support 10 for fixing the hollow body 60 by having a heat source 20 forming each shaping layer and a joint joined to the upper end of the hollow body 60 formed by the heat source 20, And a driving unit 40 which is coupled with the support 10 and moves the support 10 in the vertical direction or the horizontal direction.

Here, the heat source unit 20 and the support 10 can be relatively rotated.

The relative rotational movement may mean that the movement of the heat source unit 20 around the support 10 and the rotation of the support 10 itself are performed simultaneously or separately.

The hollow body 60 can be formed by stacking from the upper end to the lower end in accordance with the upward movement of the support 10.

As shown in FIGS. 1 and 2, a plurality of joint portions may be provided in the support 10. [

At the beginning of molding, melting and curing of the metal powder 50 in contact with the first bonding portion 11 to be joined to the uppermost end of the hollow body 60 can be performed. The molding layer may be laminated up to the second bonding portion 12 closest to the first bonding portion 11 by the relative rotation of the heat source 20 and the support 10. [ The support 10 can completely fix the hollow body 60 when the molding layers are laminated to the third joint portion 13 and the fourth joint portion 14 in the same manner. The remaining shaping layers are then formed to complete the hollow body 60.

The support 10 can be prefabricated to fit the shape of the hollow body 60.

As described above, the length of each of the plurality of joint portions may be different from the position of the support 10 so that the support 10 can fix the hollow body 60 having a specific shape. As shown in FIG. 4, in order to finish the lower end of the hollow body 60, the lowermost portion must be exposed to the heat source of the heat source unit 20, so that the support 10 can be manufactured .

Further, the support 10 can be formed into the metal powder 50 by the hollow molding body heat transfer source portion 20.

 The support 10 as described above may be manufactured externally or may be manufactured through molding in the 3D printing apparatus of the present invention and perform the same functions as those described above.

The driving unit 40 can vibrate in order to remove the metal powder 50 remaining in the hollow body 60 during the formation of the hollow body 60.

In the case where the hollow body 60 is formed while forming a plurality of shaping layers from the top to the bottom, the metal powder 50 may remain in the hollow portion inside the completed hollow body 60, It is possible to stop the heat source unit 20 and the driving unit 40 and to vibrate the driving unit 40 to remove the remaining metal powder 50. [

The metal powder 50 may be at least one selected from the group consisting of Fe, Ni, Cr, Co, Ti, Al, Cu, Au, Ag, (Pt), palladium (Pd), molybdenum (Mo), magnesium (Mg), zinc (Zn), lead (Pb), tin (Sn), beryllium (Be) and tungsten Or a powder composed of any one of the metals.

The metal powder 50 may be at least one selected from the group consisting of Fe, Ni, Cr, Co, Ti, Al, Cu, Au, Ag, (Pt), palladium (Pd), molybdenum (Mo), magnesium (Mg), zinc (Zn), lead (Pb), tin (Sn), beryllium (Be) and tungsten ≪ / RTI > may be a powder of an alloy of two or more metals.

In the description of the present invention, it is explained that the metal powder 50 is made of a limited kind of metal or alloy, but it is not limited thereto and may be made of various metals or alloys.

The support 10 may be formed of the same material as the hollow body 60.

The support 10 is formed of the same material as the hollow body 60 so as to support the load of the hollow body 60 by adjusting the line energy so that the load of the hollow body 60 It can be manufactured with a sustainable strength.

The heat source unit 20 may be formed of one of a ND: YAG laser, a CO 2 laser, or an optical fiber laser.

When one of the ND: YAG laser, the CO 2 laser, or the optical fiber laser is used as the heat source unit 20, the molding of the hollow body 60 using the metal 3D printing apparatus of the present invention can be performed in the vacuum chamber. At this time, an inert atmosphere such as nitrogen (N), argon (Ar) or the like may be formed inside the vacuum chamber.

The heat source unit 20 may be formed of an electron beam (E-Beam) device.

When an electron beam (E-beam) device is used as the heat source unit 20, the molding of the hollow body 60 using the metal 3D printing apparatus of the present invention may be performed in a vacuum chamber.

The heat source unit 20 can move vertically or laterally and conically.

For the molding of various types of hollow bodies 60 at all angles, the heat source 20 may be capable of providing a heat source for all parts of the cylindrical body.

The powder bed 30 can vibrate so that the metal powder 50 is uniformly distributed within the powder bed 30. [

When the hollow body 60 is molded from the top to the bottom by the rise of the support 10 and the movement of the heat source unit 20, the metal powder 50 contained in the powder bed 30 is consumed from the uppermost layer The surface of the metal powder 50 may not be uniform when the next shaping layer is formed after the preceding shaping layer is formed. Therefore, while the shaping layer immediately before is formed and the support 10 is lifted, the powder bed 30 is vibrated so that the surface of the metal powder 50 is made even and the next shaping layer is formed.

The powder bed 30 can perform a relative rotational motion with the heat source unit 20 or a relative rotational motion with the support 10.

When the support 10 rotates and the heat source unit 20 does not rotate, the hollow body 60 in the shape of a mold rotated by the support 10 may scratch the surface of the metal powder 50. In this case, The bed 30 relatively rotates with the support 10 to prevent the scraping phenomenon. According to the shape of the hollow body 60, the powder bed 30 can relatively move with the heat source unit 20, and the heat source unit 20, the support 10, and the powder bed 30 can be relatively A rotational motion may be performed.

The powder bed 30 can move up and down so that the focal point of the heat source unit 20 is formed on the surface of the metal powder 50.

When the focal point of the heat source unit 20 is formed on the surface of the metal powder 50, the heat source is irradiated with the maximum efficiency so that the molding of the hollow body 60 can proceed, The focal point of the heat source portion 20 can be formed on the surface of the metal powder 50.

The metal 3D printing apparatus of the present invention may further include a control unit for controlling the powder bed 30, the heat source unit 20, or the driving unit 40.

The relative rotation of the heat source 20 and the support 10 suitable for the molding process of the hollow body 60, the supply amount and supply angle of the heat source 20 to the heat source 20, the vibration of the drive unit 40 and the vibration of the powder bed 30 Motion and the like can be controlled by the control unit in accordance with the data on the hollow body 60.

Hereinafter, a 3D forming method using a metal 3D printing apparatus capable of forming a hollow body will be described.

In the first step, the support 10 designed to fit the hollow body 60 may be prepared and coupled to the driving unit 40.

In the second stage, molding can be started from a predetermined joint provided in the support 10. [

At this time, the melting and curing of the metal powder 50 in contact with the first joining portion 11 to be joined to the uppermost end is performed first, and the second joining portion 12, the third joining portion 12, The forming layer may be sequentially formed by the first bonding portion 13 and the fourth bonding portion 14.

In the third step, as the support 10 moves upward to the thickness of the molding layer, the molding layer formed by the heat source of the heat source unit 20 is laminated from the upper end to the lower end so that the hollow body 60 can be formed.

 In the fourth step, after the completion of the hollow body 60, the support 10 and the hollow body 60 can be separated.

The step of vibrating the driving unit 40 to remove the metal powder 50 remaining in the hollow body 60 may be further included between the third step and the fourth step.

The powder bed 30 may be vibrated so that the metal powder 50 is uniformly distributed within the powder bed 30 between the third and fourth steps.

Here, the support 10 is lifted when one shaping layer is formed. During this time, the residual metal in the hollow body 60 is removed by the vibration of the support 10 due to the vibration of the driving unit 40 And the surface of the metal powder 50 can be uniformly arranged by the vibration of the powder bed 30. After that, the support 10 is lowered so that the surface of the metal powder 50 immediately before the shaping layer comes in contact with the surface of the metal powder 50, and formation of the next shaping layer can be performed.

When the metal powder 50 contained in the powder bed 30 is reduced to a predetermined capacity or more, the shaping layer formation is stopped, and the metal powder can be supplied from the metal powder supply part.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

10: Support
11: first joint
12: second joint
13: third joint
14: fourth joint
20:
30: Powder bed
40:
50: metal powder
60: Hollow body

Claims (19)

A metal 3D printing apparatus capable of forming a hollow body in which a plurality of shaping layers are laminated,
A powder bed storing a metal powder;
A heat source positioned at a side of the powder bed and forming heat of the metal powder to form each of the molding layers;
A support for fixing the hollow body with a joint portion joined to an upper end of the hollow body formed by the heat source portion; And
A driving unit coupled to the support and moving the support vertically or horizontally;
, ≪ / RTI >
Wherein the heat source unit and the support relatively rotate. ≪ RTI ID = 0.0 > 31. < / RTI >
The method according to claim 1,
Wherein the hollow body is formed by stacking from the upper end to the lower end in accordance with the upward movement of the support, thereby forming a hollow body.
The method according to claim 1,
Wherein a plurality of the joining portions are provided in the support.
The method according to claim 1,
Wherein the support is prefabricated to fit the shape of the hollow body. ≪ RTI ID = 0.0 > 31. < / RTI >
The method according to claim 1,
Wherein the support is shaped into the metal powder by the heat source before forming the hollow upper body.
The method according to claim 1,
Wherein the driving unit vibrates in order to remove the metal powder remaining in the hollow body during formation of the hollow body.
The method according to claim 1,
The metal powder may be at least one selected from the group consisting of Fe, Ni, Cr, Co, Ti, Al, Cu, Au, Ag, (Pt), palladium (Pd), molybdenum (Mo), magnesium (Mg), zinc (Zn), lead (Pb), tin (Sn), beryllium (Be) and tungsten Wherein the metallic 3D printing device is a powder made of one metal.
The method according to claim 1,
The metal powder may be at least one selected from the group consisting of Fe, Ni, Cr, Co, Ti, Al, Cu, Au, Ag, (Pt), palladium (Pd), molybdenum (Mo), magnesium (Mg), zinc (Zn), lead (Pb), tin (Sn), beryllium (Be) and tungsten Wherein the hollow metal body is a powder of an alloy made of at least one metal.
The method according to claim 1,
Wherein the support is formed of the same material as the hollow body.
The method according to claim 1,
Wherein the heat source unit is formed of one of ND: YAG laser, CO 2 laser, or optical fiber laser.
The method according to claim 1,
Wherein the heat source unit is formed of an electron beam (E-beam) device.
The method according to claim 1,
Wherein the heat source unit is vertically or laterally moved and conically moved.
The method according to claim 1,
Wherein the powder bed vibrates to uniformly distribute the metal powder inside the powder bed. ≪ RTI ID = 0.0 > 31. < / RTI >
The method according to claim 1,
Wherein the powder bed relatively rotates with the heat source or performs relative rotation with the support.
The method according to claim 1,
Wherein the powder bed is vertically moved to form a focus of the heat source on the surface of the metal powder.
The method according to claim 1,
And a control unit for controlling the powder bed, the heat source unit, or the driving unit.
A 3D molding method using a metal 3D printing apparatus capable of molding the hollow body of claim 1,
(I) preparing the support designed to fit the hollow body and engaging with the driving unit;
(Ii) starting molding from a predetermined joint provided in the support;
(Iii) as the support moves up to the shaping layer thickness height, the shaping layer formed by the heat source of the heat source portion is stacked from the top to the bottom to form the hollow body; And
(Iv) separating the support and the hollow body after completion of the hollow body;
The method of claim 3, wherein the metal 3D printing apparatus is capable of forming a hollow body.
18. The method of claim 17,
Further comprising vibrating the driving unit to remove the metal powder remaining in the hollow body between the step (iii) and the step (iv) 3D molding method using a possible metal 3D printing device.
18. The method of claim 17,
Further comprising the step of oscillating the powder bed between the step (iii) and the step (iv) so that the metal powder is uniformly distributed in the powder bed. 3D molding method using a possible metal 3D printing device.
KR1020150163851A 2015-11-23 2015-11-23 A 3D printing apparatus possible for manufacturing a hollow body and a 3D printing method using the same KR101627683B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101753207B1 (en) 2016-06-13 2017-07-03 (주)아이투스 인터내셔날 Build plate fixing type 3d printer
WO2018097922A1 (en) * 2016-11-28 2018-05-31 General Electric Company Automatic systems and methods for stacking composite plies
KR101920157B1 (en) * 2017-06-16 2018-11-19 박석동 Injection Mold Apparatus having 3D-type Cooling Core

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US20060165546A1 (en) * 2005-01-24 2006-07-27 Aisan Kogyo Kabushiki Kaisha Method and apparatus for manufacturing three-dimensional objects
JP2014104467A (en) * 2012-11-22 2014-06-09 Toyota Motor Corp Draw-up type continuous casting apparatus, draw-up type continuous casting method and solidification interface detection device
KR101473165B1 (en) * 2014-04-18 2014-12-16 주식회사 스맥 Apparatus and process for producing three-dimensional object

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060165546A1 (en) * 2005-01-24 2006-07-27 Aisan Kogyo Kabushiki Kaisha Method and apparatus for manufacturing three-dimensional objects
JP2014104467A (en) * 2012-11-22 2014-06-09 Toyota Motor Corp Draw-up type continuous casting apparatus, draw-up type continuous casting method and solidification interface detection device
KR101473165B1 (en) * 2014-04-18 2014-12-16 주식회사 스맥 Apparatus and process for producing three-dimensional object

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101753207B1 (en) 2016-06-13 2017-07-03 (주)아이투스 인터내셔날 Build plate fixing type 3d printer
WO2018097922A1 (en) * 2016-11-28 2018-05-31 General Electric Company Automatic systems and methods for stacking composite plies
US10583617B2 (en) 2016-11-28 2020-03-10 General Electric Company Automatic systems and methods for stacking composite plies
KR101920157B1 (en) * 2017-06-16 2018-11-19 박석동 Injection Mold Apparatus having 3D-type Cooling Core

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