JP4947588B2 - Manufacturing equipment for 3D shaped objects - Google Patents

Description

  The present invention relates to a manufacturing apparatus for manufacturing a three-dimensional shaped object in which a plurality of sintered layers are laminated and integrated by repeating a step of forming a sintered layer by irradiating a light beam onto a layer of powder material.

  There is a method for manufacturing a three-dimensional shaped object known as an optical modeling method. For example, in the manufacturing method disclosed in Patent Document 1, a sintered layer is formed by irradiating a predetermined portion of a powder material layer with a light beam to sinter the powder at the portion, A new layer of powder material is coated on top and a new portion of the powder material layer is irradiated with a light beam to sinter the powder at that location, thereby forming a new firing united with the lower sintered layer. By repeating the formation of a layered layer, a powder sintered part (three-dimensional shaped object) in which a plurality of sintered layers are laminated and integrated is manufactured, and the design data of the three-dimensional shaped object ( Since the light beam is irradiated based on the cross-sectional shape data of each layer generated by slicing the model (CAD data) to a desired layer thickness, a three-dimensional shaped object of arbitrary shape can be manufactured, Compared to manufacturing methods such as cutting, the desired shape is quickly achieved. It is possible to obtain a molded product.

Here, a galvano scanner mirror is generally used as an actuator for two-dimensionally scanning a light beam. A galvano scanner mirror is a set of rotating mirrors. Each mirror rotates independently, the light beam is reflected by one mirror, and the light beam reflected by the mirror is further reflected by the other mirror. The light beam scans the layer of powder material two-dimensionally.
Japanese Patent No. 3446733

  However, when the galvano scanner mirror is used, since there are two rotating mirrors, an error is likely to occur in the reflection of the light beam, and in order to reduce this error, a very difficult correction is required. is there.

  The present invention has been made in view of the above-described problems, and an apparatus for manufacturing a three-dimensional shaped object that is less likely to cause an error in reflection of a light beam and that can cause the light beam to scan two-dimensionally along a desired path. The purpose is to provide.

  In order to solve the above-mentioned problem, the three-dimensional shaped article manufacturing apparatus according to claim 1 sinters by irradiating a predetermined part of the layer of powder material with a light beam and sintering the powder at the part. A layer was formed, and a new layer of powder material was coated on the sintered layer, and a predetermined portion of the powder was irradiated with a light beam to sinter the powder at that location, thereby integrating with the lower sintered layer. One rotating mirror that is rotatable about one axis, and is a manufacturing apparatus that manufactures a three-dimensional shaped object in which a plurality of sintered layers are laminated and integrated by repeatedly forming a new sintered layer And a light beam emitting means provided with a light beam emitting unit for emitting a light beam on the surface of the rotating mirror, and the rotating mirror rotates to cause the light beam to scan the powder material layer and be emitted to the rotating mirror. The light beam moves in a substantially axial direction that makes the rotating mirror rotatable. Characterized in that it comprises a light beam scanning means.

  According to a second aspect of the present invention, in the three-dimensional shaped article manufacturing apparatus according to the first aspect, the light beam scanning unit is configured such that the light beam emitted from the light beam emitting unit to the rotating mirror is applied to the rotating mirror. It is characterized by moving.

  According to a third aspect of the present invention, in the three-dimensional shaped article manufacturing apparatus according to the first aspect of the present invention, the light beam scanning means is such that the rotating mirror and the light beam emitting portion move integrally. It is characterized by.

  According to a fourth aspect of the present invention, in the three-dimensional shaped article manufacturing apparatus according to any one of the first to third aspects of the present invention, the light beam scanning means includes a rotating mirror and a light beam emitting portion as a powder material. It is characterized in that it rotates integrally in a horizontal plane so as to change the scanning direction of the light beam applied to the layer.

  According to a fifth aspect of the present invention, in the apparatus for manufacturing a three-dimensional shaped article according to any one of the first to fourth aspects, the light beam scanning means has a distance between the rotating mirror and the light beam emitting portion. It is characterized by changes.

  Invention of Claim 6 is equipped with the control part which controls the operation | movement of a light beam scanning means in the manufacturing apparatus of the three-dimensional shape molded article of any one of the said Claims 1-5, It is characterized by the above-mentioned. To do.

  The invention described in claim 7 is the apparatus for manufacturing a three-dimensional structure according to any one of claims 1 to 6, further comprising a light beam oscillator that oscillates and outputs a light beam. The output light beam is emitted to a rotating mirror via an optical fiber.

  The invention according to claim 8 is the apparatus for manufacturing a three-dimensional structure according to any one of claims 1 to 6, further comprising a light beam oscillator that oscillates and outputs a light beam. The output light beam is emitted to the rotating mirror via the reflecting mirror.

  A ninth aspect of the present invention is the apparatus for manufacturing a three-dimensional shaped article according to the seventh or eighth aspect, comprising a plurality of light beam oscillators, wherein the plurality of light beam oscillators oscillate different types of light beams. Output.

  A tenth aspect of the present invention is the apparatus for producing a three-dimensional shaped object according to any one of the first to ninth aspects, further comprising a plurality of light beam scanning means.

  The invention described in claim 11 is characterized in that in the three-dimensional shaped article manufacturing apparatus according to claim 10, a light beam branching means for branching the light beam to a plurality of rotating mirrors is provided.

  According to a twelfth aspect of the present invention, in the three-dimensional shaped article manufacturing apparatus according to the eleventh aspect, the light beam branching means and the plurality of rotating mirrors move integrally.

  A thirteenth aspect of the invention is characterized in that in the three-dimensional shaped article manufacturing apparatus according to the tenth aspect, a rotating mirror switching means for switching a rotating mirror from which the light beam is emitted is provided.

  According to the first aspect of the present invention, an error is unlikely to occur in the scanning of the light beam, and the light beam can be scanned two-dimensionally along a desired path.

  According to the second aspect of the present invention, it is not necessary to move the rotating mirror in the axial direction in accordance with the light beam emitting portion, so that a simple configuration can be achieved.

  According to the third aspect of the invention, the light beam can always be applied to the same part of the rotating mirror, so that the rotating mirror can be reduced in size.

  According to the invention described in claim 4, since the scanning direction of the light beam can be arbitrarily changed in forming each sintered layer to be laminated, the sintered layer generated when the powder material is sintered. It is possible to manufacture a three-dimensional shaped object so that the distortion does not impair the shape of the entire object.

  According to the fifth aspect of the present invention, the spot diameter of the light beam applied to the powder material can be changed.

  According to the sixth aspect of the invention, a desired light beam can be scanned along a desired path.

  According to the seventh aspect of the present invention, even if the optical axis changes, the light beam emitting means is not affected, and the degree of freedom of the configuration of the light beam emitting means can be improved.

  According to the eighth aspect of the invention, the degree of freedom of the configuration of the light beam emitting means can be improved.

  According to the invention described in claim 9, the sintered layer corresponding to the inside of the three-dimensional shaped object is formed in a short time using a light beam having a large condensing diameter, and the surface of the three-dimensional shaped object is obtained. Since the sintered layer corresponding to the above can be accurately formed using a light beam having a small condensing diameter, a three-dimensional shaped object can be manufactured efficiently.

  According to the tenth aspect of the present invention, since a predetermined region of the layer of the powder material to be scanned with the light beam can be assigned to each light beam scanning means, the sintered layer can be formed in a short time. At the same time, since the distance between the rotating mirror and the layer of the powder material is shortened, an error is less likely to occur in the scanning of the light beam, and a three-dimensional shaped object can be manufactured with high accuracy.

  According to the invention described in claim 11, since the plurality of light beam scanning means can share the light beam oscillator, the number of components can be reduced and the cost of oscillating and outputting the light beam as a whole can be reduced. Can do.

  According to the twelfth aspect of the present invention, it is possible to easily set scanning paths for a plurality of light beams.

  According to the thirteenth aspect of the present invention, it is possible to accurately scan a desired region in the powder material layer with a light beam.

(Embodiment 1)
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the present invention may be described with specific examples, but the present invention is not limited to the following specific examples.

  FIG. 1 is a schematic perspective view of a three-dimensional shaped article manufacturing apparatus (hereinafter simply referred to as “manufacturing apparatus”) 1A according to the present embodiment.

  First, the manufacturing apparatus 1A has a predetermined thickness Δt1 (see FIG. 5) by using a squeezing blade 21 to smooth the powder material supplied on the lifting table 20 that moves up and down in the space surrounded by the cylinder. The powder layer forming means 2 for forming the powder material layer (powder layer) 10 is a basic constituent element. Secondly, the manufacturing apparatus 1A has a light beam oscillator 30 that oscillates and outputs the light beam L as a basic component. Thirdly, the manufacturing apparatus 1A is provided above the powder layer forming means 2 and is connected by a rotating mirror 31, which is rotatable around an axis a, a light beam oscillator 30, and an optical fiber 33, and transmits a light beam L. And a light beam emitting means 3 having a light beam shaping part 34 provided with a light beam emitting part 32 for changing the shape of the light beam L and emitting the light beam L to the surface of the rotating mirror 31. The light beam scanning means 4 in which the light beam L scans the powder layer 10 by this rotation and the light beam L emitted to the rotating mirror 31 moves in the direction of the axis a is a basic constituent requirement. Although omitted in FIG. 1, as shown in FIG. 2, the rotating mirror 31 and the light beam shaping unit 34 are respectively arranged in the XY direction on a base plate 37 provided with a window portion 36 that transmits the light beam L. The irradiation unit 38 is formed so as to be movable. FIG. 2A is a schematic side view of the irradiation unit 38, and FIG. 2B is a schematic plan view of the irradiation unit 38. Further, fourthly, the manufacturing apparatus 1A is provided with a ball end mill and is provided on the base portion of the powder layer forming means 2 via an XY drive mechanism (preferably a linear motion linear motor drive in terms of speeding up) 40. The removal means 5 that removes at least one of the surface portion and the unnecessary portion in the modeled object manufactured so far by the cutting tool 41 is a basic constituent requirement.

  Here, the powder material includes a fine metal powder having a particle size of 1 to 100 μm. Specifically, the powder material is a mixed powder of chromium molybdenum steel (SCM440), nickel (Ni), copper manganese alloy (CuMnNi) and graphite (C), and the blending ratio thereof is (70 wt% SCM440-20). Wt% Ni-9 wt% CuMnNi) +0.3 wt% C.

  As the light beam L, a carbon dioxide laser is used. The irradiation path of the light beam L is created in advance from three-dimensional CAD data. That is, contour shape data of each cross section obtained by slicing STL data generated from a three-dimensional CAD model at an equal pitch is used.

  The light beam shaping unit 34 is composed of a plurality of lens groups. Thereby, the diameter of the light beam L can be enlarged or reduced, and the light beam can be shaped into parallel light.

  Further, as the rotating mirror 31, a polygon mirror that repeats rotating motion at a constant speed can be used. In addition, by inserting a special lens such as an fθ lens between the rotating mirror 31 and the powder layer 10, constant-speed beam scanning may be performed, or a special calculation is performed in advance, and the rotation speed of the rotating mirror 31 is set. By changing it, constant velocity beam scanning may be performed. The rotation of the rotary mirror 31 and the ON / OFF of the light beam L are generally synchronized in accordance with preset NC data. Similarly, the rotation of the rotating mirror 31 and the operation of the light beam shaping unit 34 are also synchronized. In order to move the light beam L emitted to the rotating mirror 31 in the direction of the axis a, the light beam scanning unit 4 adopts a configuration in which the rotating mirror 31 and the light beam emitting unit 32 move integrally. Can do. Specifically, the irradiation unit 38 may be moved. In order to move the irradiation unit 38 itself, for example, as shown in FIG. 3, one end of the irradiation unit 38 is arranged on a ball screw 40 that is rotationally driven by a motor 39, and the other end is placed on a slide rail 41. Just place it. By adopting such a configuration, the light beam L can always be applied to the same portion of the rotating mirror 31, so that the rotating mirror 31 can be reduced in size. On the other hand, if the rotating mirror 31 that is long in the axis a direction is used for the light beam scanning unit 4 to cover the length of the scanning region of the light beam L, the position of the rotating mirror 31 remains fixed. It is only necessary to move the light beam emitting part 32. Specifically, the light mirror 34 may be moved in the direction of the axis a so that the light beam L moves in the direction of the axis a without moving the rotating mirror 31 on the irradiation unit 38. By adopting such a configuration, it is not necessary to move the rotating mirror 31 in the direction of the axis a in accordance with the light beam emitting unit 32, so that a simple configuration can be achieved.

  The light beam scanning unit 4 employs a configuration in which the rotating mirror and the light beam emitting unit rotate integrally in a horizontal plane so as to change the scanning direction of the light beam applied to the powder material layer. Specifically, as shown in FIG. 4, the irradiation unit 38 rotates on the arc-shaped guide rail 35, so that the rotating mirror 31 and the light beam emitting unit 32 are on the arc-shaped guide rail 35. Are rotated together. By adopting such a configuration, since the scanning direction of the light beam L can be arbitrarily changed in the formation of the respective sintered layers 11 to be laminated, the sintering generated when the powder material is sintered. A three-dimensional shaped object can be manufactured so that the distortion of the layer 11 does not impair the shape of the entire object. 4A is a main part plan view showing an initial position of the irradiation unit 38, and FIG. 4B is a main part plan view showing a position when the irradiation unit 38 is rotated 90 degrees. In addition, the irradiation unit 38 in FIG. 4 does not require the window part 36 (refer FIG. 2).

  Further, a configuration in which the distance between the rotating mirror 31 and the light beam emitting unit 32 changes can be adopted for the light beam scanning unit 4. Specifically, at least one of the rotating mirror 31 or the light beam shaping unit 34 may be moved on the irradiation unit 38 to change the distance between the rotating mirror 31 and the light beam shaping unit 34. Therefore, the spot diameter of the light beam L irradiated to the powder material can be changed.

  Each operation | movement of the light beam scanning means 4 mentioned above is controlled by the control part (not shown). For example, the control unit instructs the rotating mirror 31 to have a desired rotation angle, and the rotating mirror 31 feeds back the current rotation angle data to the control unit. Thereby, the rotation angle of the rotary mirror 31 is controlled. In addition, the control unit instructs the light beam shaping unit 34 to move to a desired position, and the light beam shaping unit 34 feeds back data of the current position to the control unit. Thereby, the position of the light beam shaping part 34 is controlled. Therefore, a desired light beam L can be scanned along a desired path.

  As shown in FIG. 5, the manufacturing of the three-dimensional shaped object in this product is a modeling base on the upper surface of the lifting table 20 which is an adjusting means for adjusting the relative distance between the light beam scanning means 4 and the sintered layer 11. The first powder layer 10 having a thickness of about 50 μm is formed by supplying a powder material to the surface 22 and leveling with the blade 21, and light is generated by rotation of the rotary mirror 31 at a location where the powder layer 10 is to be cured. By scanning the beam L and moving the light beam L emitted to the rotating mirror 31 in the direction of the axis a, the powder material is sintered to form the sintered layer 11 integrated with the modeling base 22.

  Thereafter, the lifting table 20 is slightly lowered, the powder material is supplied again, and the blade 21 is used to form the second powder layer 10. The distortion of the sintered layer 11 that occurs when the powder material is sintered. The rotating mirror 31 and the light beam emitting unit 32 are integrally rotated in the horizontal plane by rotating the irradiation unit 38 in the horizontal plane so that the powder layer 10 is irradiated. The scanning direction of the light beam L to be changed is changed, the light beam L is scanned by the rotation of the rotating mirror 31 at the position where the powder layer 10 is to be cured, and the light beam L emitted to the rotating mirror 31 is moved in the direction of the axis a. As a result, the powder material is sintered to form the sintered layer 11 integrated with the lower sintered layer 11.

  By repeating the above steps, a target three-dimensional shaped object is manufactured.

  When the powder material is difficult to sinter when oxidized, it is preferable to provide a mechanism for protecting the powder material from oxidation. Specifically, the above process is performed in a chamber (not shown), and a nitrogen supply device and an oxygen concentration meter are connected to the chamber, and the oxygen concentration is controlled according to the data of the oxygen concentration meter. The atmosphere in the chamber is adjusted by the control device.

  In addition, unnecessary powder adheres to the periphery of the portion that is irradiated with the light beam L and sintered and hardened, due to the transferred heat, and a low-density surface layer is formed on the molded object. End up. In order to remove the low-density surface layer and obtain a three-dimensional shaped object having a smooth surface, after the formation of the sintered layer 11, the removing means 5 removes the surface portion or unnecessary portion of the shaped object produced so far. At least one of the above is removed. Thereby, the surface can be finished without being restricted by the drill length or the like by repeatedly performing the formation of the sintered layer 11 and the removal of at least one of the surface portion or the unnecessary portion in the molded article manufactured so far. .

  By the way, in the example shown in FIG. 1, the light beam oscillator 30 and the light beam shaping unit 34 are connected by an optical fiber 33, and the light beam L is emitted to the rotating mirror 31 through the optical fiber 33. Therefore, even if the optical axis changes, the light beam emitting means 3 is not affected, and the degree of freedom of the configuration of the light beam emitting means 3 can be improved. As shown in FIG. 6, the light beam L from the light beam oscillator 30 may be emitted to the rotating mirror 31 via the reflection mirror 42. In FIG. 6, the reflection mirror 42 is fixedly disposed on the base plate 37 of the irradiation unit 38. Even in this case, the degree of freedom of the configuration of the light beam emitting means 3 can be improved.

  Further, a plurality of light beam oscillators 30 may be provided, and the plurality of light beam oscillators 30 may oscillate and output different types of light beams. Specifically, two light beam oscillators 30 and 30 are provided, one of the light beam oscillators 30 oscillates and outputs a carbon dioxide laser as a light beam L, and the other light beam oscillator 30 generates a light beam L. A YAG laser or a fiber laser is oscillated and output. The wavelength of the carbon dioxide laser is 10.6 μm, the wavelength of the YAG laser or fiber laser is 1.06 μm, and the condensed diameter of the light beam L is proportional to the wavelength. Compared with a laser, a small condensing diameter can be obtained. Also, for metals, the wavelength of YAG laser or fiber laser is more easily absorbed than the wavelength of carbon dioxide laser. On the other hand, it is difficult for the YAG laser and the fiber laser to constitute the light beam oscillator 30 having a higher output than the carbon dioxide laser. Therefore, the sintered layer 11 corresponding to the inside of the three-dimensional shaped object only needs to be strong, so it is formed in a short time using a carbon dioxide gas laser with a large condensing diameter, and the surface of the three-dimensional shaped object. Since the sintered layer 11 corresponding to is required to be fine and highly accurate, it is formed using a YAG laser or a fiber laser. In this way, a three-dimensional shaped object can be manufactured efficiently.

  Accordingly, an error is unlikely to occur in the scanning of the light beam L, and the light beam L can be scanned two-dimensionally along a desired path.

(Embodiment 2)
FIG. 7 is a schematic plan view of the manufacturing apparatus 1B according to the present embodiment.

  The manufacturing apparatus 1B according to the present embodiment is different from the manufacturing apparatus 1A according to the first embodiment in that a plurality of light beam scanning units 4 are provided.

  As shown in FIG. 7, the manufacturing apparatus 1 </ b> B includes two light beam scanning units 4, 4, and each of the light beam scanning units 4, 4 has a predetermined region 51 of the powder layer 10. , 52 are scanned.

  The two light beam oscillators 30 and 30 in the two light beam scanning means 4 and 4 may oscillate and output different types of light beams. More specifically, one light beam oscillator 30 oscillates and outputs a carbon dioxide laser as the light beam L, and the other light beam oscillator 30 oscillates and outputs a YAG laser or a fiber laser as the light beam L. To. And about the sintered layer 11 applicable to the inside of a three-dimensional molded article, it forms in a short time using a carbon dioxide gas laser with a large condensing diameter, and the sintered layer 11 corresponds to the surface of a three-dimensional molded article. Is finely and accurately formed using a YAG laser or a fiber laser. In this way, a three-dimensional shaped object can be manufactured efficiently.

  Therefore, since the predetermined regions 51 and 52 of the powder layer 10 scanned with the light beam L can be assigned to the individual light beam scanning means 4 and 4, the sintered layer 11 can be formed in a short time, and Since the distance between the rotating mirror 31 and the powder layer 10 is shortened, an error is less likely to occur in the scanning of the light beam L, and a three-dimensional shaped object can be manufactured with high accuracy.

(Embodiment 3)
FIG. 8 is a schematic plan view of the manufacturing apparatus 1C according to the present embodiment.

  In the manufacturing apparatus 1 </ b> C according to the present embodiment, the two light beam scanning units 4 and 4 share one light beam oscillator 30, and the light beam L output from the light beam oscillator 30 is applied to the plurality of rotating mirrors 31. The manufacturing apparatus 1 </ b> B according to the second embodiment is different from the manufacturing apparatus 1 </ b> B according to the second embodiment in that the optical beam branching unit 6 is provided.

  As the light beam branching means 6, a half mirror 61 and a reflection mirror 62 that are fixedly disposed on the irradiation unit 38 are used. In this embodiment, the reflection part of the light beam L in the half mirror 61 and the reflection mirror 62 is a light beam emitting part.

  The half mirror 61 reflects 50% of the light beam L output from the light beam oscillator 30, emits it to one rotating mirror 31, transmits 50% of the light beam L, and reflects it to the reflection mirror 62. Then, the light is emitted to the other rotating mirror 31.

  Here, since the light beam branching means 6 is disposed on the irradiation unit 38, it moves integrally with the two rotary mirrors 31, 31. Therefore, the scanning paths of the plurality of light beams L can be easily set.

  As shown in FIG. 9, a drive mechanism 53 that integrally moves the two rotary mirrors 31, 31 in the direction perpendicular to the axis a (the left-right direction in FIG. 9) is provided on the base plate 37 of the irradiation unit 38. Also good. By adopting such a configuration, when a large number of light beam oscillators 30 cannot be mounted, it becomes easy to form the sintered layer 11 having a large area.

  Therefore, since the plurality of light beam scanning means 4 and 4 can share the light beam oscillator 30, the number of parts can be reduced, and the cost of oscillating and outputting the light beam L as a whole can be reduced.

(Embodiment 4)
FIG. 10 is a schematic plan view of the manufacturing apparatus 1D according to the present embodiment, and FIG. 11 is an operation explanatory diagram of the manufacturing apparatus 1D.

  In the manufacturing apparatus 1D according to this embodiment, the two light beam scanning units 4 and 4 share one light beam oscillator 30, and the light beam L output from the light beam oscillator 30 is emitted to any rotating mirror 31. The second embodiment is different from the second embodiment in that a rotating mirror switching means 7 for switching between them is provided.

  As shown in FIG. 10, two rotating mirrors 31, 31 are provided on the irradiation unit 38 in the direction in which the light beam L is emitted from the light beam emitting unit 32.

  Here, as shown in FIG. 11, first, the light beam L is emitted to the rotating mirror 31 closer to the light beam emitting unit 32, and then the rotating mirror 31 closer to the light beam emitting unit 32 is moved to the light beam. By rotating so that L does not hit, the light beam L is emitted to the rotating mirror 31 farther from the light beam emitting unit 32. This order may be reversed. In this embodiment, the rotation mirror 31 is exemplified as the rotation mirror switching unit 7, but is not particularly limited as long as it is a unit that removes the rotation mirror 31 from the path of the light beam L. Therefore, it is preferable to use the rotating mirror 31 close to the place where the powder layer 10 is to be sintered for irradiating the powder layer 10 with the light beam L.

  Therefore, the light beam L can be scanned with high accuracy in a desired region in the powder layer 10.

  In addition, each structure in Embodiment 1-4 mentioned above can be selected suitably, and can be combined.

It is a schematic perspective view which shows the manufacturing apparatus of the three-dimensional shape molded article which concerns on Embodiment 1. FIG. (A) is a schematic side view of the irradiation unit in the same as the above, (b) is a schematic plan view of the irradiation unit. It is a schematic plan view which shows the manufacturing apparatus of the three-dimensional shape molded article which concerns on Embodiment 1. FIG. (A) is a principal part top view which shows the initial position of the irradiation unit in the same as the above, (b) is a principal part top view which shows a position when the said irradiation unit rotates 90 degree | times. It is operation | movement explanatory drawing same as the above. It is a schematic plan view which shows the modification same as the above. It is a schematic plan view which shows the manufacturing apparatus of the three-dimensional shape molded article which concerns on Embodiment 2. FIG. It is a schematic plan view which shows the manufacturing apparatus of the three-dimensional shape molded article which concerns on Embodiment 3. FIG. It is a schematic plan view which shows the modification same as the above. It is a schematic plan view which shows the manufacturing apparatus of the three-dimensional shape molded article which concerns on Embodiment 4. It is operation | movement explanatory drawing same as the above.

Explanation of symbols

1A, 1B, 1C, 1D Three-dimensional shaped object manufacturing apparatus 2 Powder layer forming means 3 Light beam emitting means 4 Light beam scanning means 5 Removing means 6 Light beam branching means 7 Rotating mirror switching means 10 Powder material layer (powder) layer)
DESCRIPTION OF SYMBOLS 11 Sintered layer 30 Light beam oscillator 31 Rotating mirror 32 Light beam emitting part 33 Optical fiber 42 Reflecting mirror a Axis L Light beam

Claims (13)

A predetermined layer of the powder material layer is irradiated with a light beam to sinter the powder at the corresponding portion to form a sintered layer, and a new layer of the powder material is coated on the sintered layer to cover the predetermined portion. A plurality of sintered layers were laminated and integrated by repeating the formation of a new sintered layer integrated with the lower sintered layer by irradiating the light beam and sintering the powder at that location. A manufacturing apparatus for manufacturing a three-dimensional shaped object,
A rotating mirror capable of rotating around one axis, and a light beam emitting means provided with a light beam emitting portion for emitting a light beam on the surface of the rotating mirror. Manufacturing of a three-dimensional shaped object characterized by comprising light beam scanning means for scanning a layer of powder material and for the light beam emitted to the rotating mirror to move in a substantially axial direction enabling the rotating mirror to rotate. apparatus.   2. The apparatus for producing a three-dimensional shaped object according to claim 1, wherein the light beam scanning means moves the light beam emitted from the light beam emitting portion to the rotating mirror with respect to the rotating mirror.   The three-dimensional shaped article manufacturing apparatus according to claim 1, wherein the light beam scanning unit is configured such that the rotating mirror and the light beam emitting unit move integrally.   The light beam scanning means is characterized in that the rotating mirror and the light beam emitting portion rotate integrally in a horizontal plane so as to change the scanning direction of the light beam applied to the powder material layer. The manufacturing apparatus of the three-dimensional shape molded article of any one of Claims 1-3.   The apparatus for producing a three-dimensional shaped object according to any one of claims 1 to 4, wherein the light beam scanning means changes a distance between the rotating mirror and the light beam emitting portion.   The apparatus for producing a three-dimensional shaped object according to any one of claims 1 to 5, further comprising a control unit that controls the operation of the light beam scanning unit. It has a light beam oscillator that oscillates and outputs a light beam,
The apparatus for producing a three-dimensional shaped article according to any one of claims 1 to 6, wherein the light beam output from the light beam oscillator is emitted to a rotating mirror via an optical fiber. It has a light beam oscillator that oscillates and outputs a light beam,
The apparatus for producing a three-dimensional shaped article according to any one of claims 1 to 6, wherein a light beam output from the light beam oscillator is emitted to a rotating mirror via a reflecting mirror.   The three-dimensional shaped article manufacturing apparatus according to claim 7 or 8, comprising a plurality of light beam oscillators, wherein the plurality of light beam oscillators oscillate and output different types of light beams.   The apparatus for manufacturing a three-dimensional shaped article according to any one of claims 1 to 9, comprising a plurality of light beam scanning means.   The apparatus for manufacturing a three-dimensional shaped object according to claim 10, further comprising a light beam branching unit that branches the light beam with respect to a plurality of rotating mirrors.   The apparatus for producing a three-dimensional shaped object according to claim 11, wherein the light beam branching means and the plurality of rotating mirrors move integrally.   The three-dimensional shaped article manufacturing apparatus according to claim 10, further comprising a rotating mirror switching unit that switches a rotating mirror from which the light beam is emitted.

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