A POWDER BED ADDITIVE MANUFACTURING MACHINE

Abstract

A body, a table that is located on the body and allows powders to be laid thereon by a laying apparatus is disclosed. A layer is created by sintering or fusing the powders laid on the table, a part (P) that is produced by depositing the layers on top of each other using additive manufacturing method, and at least one heat source is located on the body and applies heat treatment to the powders laid on the table.

Claims

1. A powder bed additive manufacturing machine (1) comprising a body (2); a table (3) which is located on the body (2) and allows powders (T) to be laid thereon by means of a laying apparatus (S); a layer (L) which is created by sintering or fusing the powders (T) laid on the table (3); a part (P) which is produced by depositing the layers (L) on top of each other using additive manufacturing method; and at least one heat source (4) which is located on the body (2) and applies heat treatment to the powders (T) laid on the table (3), characterized by a floor (Z) on which the body (2) is located; at least one motor (6) located between the floor (Z) and the table (3) and enabling movement of the table (3); a coating (5) located on the table (3) such that the coating (5) is between the motor (6) and the table (3), wherein said coating (5) made of an insulating material to prevent, transfer of heat of the table (3) to the surroundings of the table (3), wherein said coating (5) surrounds a surface of the table (3) facing the floor (Z); and a paste (7) which is located between the motor (6) and the coating (5) and allows the motor (6) to adhere to the table (3).

2. The powder bed additive manufacturing machine (1) according to claim 1, characterized by a coating (5) which is made of a ceramic material.

3. The powder bed additive manufacturing machine (1) according to claim 1, characterized by a coating (5) which is produced by physical vapour deposition method.

4. (canceled)

5. The powder bed additive manufacturing machine (1) according to claim 1, characterized by a motor (6) which is located between the floor (Z) and the table (3) and provides mechanical or ultrasonic vibration.

6-8. (canceled)

9. The powder bed additive manufacturing machine (1) according to claim, characterized by a paste (7) which is made of a ceramic material.

10-11. (canceled)

Description

[0021] The powder bed additive manufacturing machine realized to achieve the object of the present invention is illustrated in the attached drawings, in which:

[0022] FIG. 1 is a schematic view of a powder bed additive manufacturing machine.

[0023] FIG. 2 is a sectional view of a powder bed additive manufacturing machine.

[0024] FIG. 3 is a schematic view of a motor, a paste and a coating.

[0025] FIG. 4 is a schematic view of an alternative embodiment of a powder bed additive manufacturing machine.

[0026] All the parts illustrated in figures are individually assigned a reference numeral and the corresponding terms of these numbers are listed as follows: [0027] (1) Power bed additive manufacturing machine [0028] (2) Body [0029] (3) Table [0030] (4) Heat source [0031] (5) Coating [0032] (6) Motor [0033] (7) Paste [0034] (8) Control unit [0035] (T) Powders [0036] (S) Laying Apparatus [0037] (L) Layer [0038] (P) Part

[0039] The powder bed additive manufacturing machine (1) comprises a body (2); a table (3) which is located on the body (2) and allows powders (T) to be laid thereon by means of a laying apparatus (S); a layer (L) which is created by sintering or fusing the powders (T) laid on the table (3); a part (P) which is produced by depositing the layers (L) on top of each other using additive manufacturing method; and at least one heat source (4) which is located on the body (2) and applies heat treatment to the powders (T) laid on the table (3) (FIG. 1).

[0040] The powder bed additive manufacturing machine (1) of the present invention comprises a coating (5) located on the table (3), made of an insulating material, and almost completely preventing transfer of heat of the table (3) to the surroundings of the table (3) (FIG. 2).

[0041] The part (P) is produced on the table (3) provided at the body (2). Powders (T) are transferred to the table (3) by means of the laying apparatus (S). Powders (T) transferred to the table (3) are sintered or fused by the heat source (4), so that a first layer (L) correspondent with a predetermined three-dimensional geometric model is created. The additive manufacturing process continues by depositing the layers on top of each other until the final part (P) is created.

[0042] The table (3) provided in powder bed additive manufacturing machines (1) operates at high temperatures (400 to 1100 C^°). Such temperatures may damage the equipment around the table (3). For that reason, coating (5) to be applied on the table (3) enables the equipment around the table (3) to be protected from the heat of the table (3).

[0043] In an embodiment of the invention, the powder bed additive manufacturing machine (1) comprises a coating (5) which is made of a ceramic material. Therefore, ceramic coating (5) applied on the table (3) enables that heat of the table (3) is not transferred to its surroundings, thanks to its insulation feature.

[0044] In an embodiment of the invention, the powder bed additive manufacturing machine (1) comprises a coating (5) which is produced by physical vapour deposition method. In the physical vapour deposition method, material to be coated is evaporated in a vacuum environment with a heater and deposited on a surface, on which coating (5) will be applied, as a thin film layer. The coating (5) process can be performed at lower temperatures with the physical vapour deposition method. Therefore, it does not affect the properties of the material to be coated. It increases the quality thanks to its high level adhesion to the surface and the denser coating (5) structure.

[0045] In an embodiment of the invention, the powder bed additive manufacturing machine (1) comprises a floor (Z) on which the body (2) is located; and at least one motor (6) located between the floor (Z) and the table (3) and enabling movement of the table (3). Motor (6) allows the table (3) to be vibrated and/or moved.

[0046] In an embodiment of the invention, the powder bed additive manufacturing machine (1) comprises a motor (6) which is located between the floor (Z) and the table (3) and provides mechanical or ultrasonic vibration. The table (3) triggered by the motor (6) provides movement of the powders (T) thereon, and thus, providing almost complete absence of porosity between the powders (T).

[0047] In an embodiment of the invention, the powder bed additive manufacturing machine (1) comprises a coating (5) which is located on the table (3) such that the coating (5) is between the motor (6) and the table (3). The coating (5) protects the motor (6) that vibrates the table (3) from the heat of the table (3). Therefore, lifecycle of the motor (6) is increased and maintenance costs are reduced.

[0048] In an embodiment of the invention, the powder bed additive manufacturing machine (1) comprises a coating (5) which almost completely surrounds a surface of the table (3) facing the floor (Z). The coating (5) is applied on the entire bottom surface of the table (3) (FIG. 3).

[0049] In an embodiment of the invention, the powder bed additive manufacturing machine (1) comprises a paste (7) which is located between the motor (6) and the coating (5) and allows the motor (6) to adhere to the table (3) (FIG. 4).

[0050] In an embodiment of the invention, the powder bed additive manufacturing machine (1) comprises a paste (7) which is made of a ceramic material. A ceramic material-based paste (7) with a low thermal conductivity coefficient is used, which allows the motor (6) to adhere to the coating (5)

[0051] In an embodiment of the invention, the powder bed additive manufacturing machine (1) comprises a control unit which allows control of at least one of power, frequency, amplitude and time parameters of the motor (6) providing vibration. After appropriate parameters are detected, the motor (6) is controlled by the control unit (8) during manufacturing process.

[0052] In an embodiment of the invention, the powder bed additive manufacturing machine (1) comprises a control unit (8) which allows the heat source (4) to be controlled. Position and operating status of the heat source (4) is controlled by the control unit (8).