JP7248972B2 - Three-dimensional modeling apparatus and three-dimensional modeling method - Google Patents

Description

The present invention relates to a three-dimensional modeling apparatus and a three-dimensional modeling method.

Three-dimensional modeling apparatuses are widely used for additionally modeling a three-dimensional modeled object on a base material. The modeling surface on the base material is not limited to a flat surface and may be a curved surface, and it is required to form a three-dimensional model with high accuracy even on such a curved modeling surface.

Various methods are known for the three-dimensional modeling method, and one of them is widely known as an inkjet method. In the inkjet method, for example, light or thermosetting ink is ejected along scanning lines, and then the ejected ink is irradiated with light (eg, ultraviolet rays) or heat to cure the ink. By repeating such scanning, ink ejection, and curing, a three-dimensional structure having a desired shape can be formed.

In such an inkjet method, more and more highly accurate modeling is required. For example, modeling of a structure having a diameter of about 0.3 mm and modeling of a columnar shape with high roundness are required. Such highly accurate modeling is difficult with the conventional inkjet method as described above.

JP-A-2005-205670

An object of the present invention is to provide a three-dimensional modeling apparatus and method that enable modeling of a three-dimensional modeled object with higher precision in the inkjet method.

In order to solve the above problems, a three-dimensional modeling apparatus according to the present invention includes a dispensing unit that dispenses a modeling material, a curing unit that applies light or heat to the modeling material to cure the modeling material, and the modeling material. a modeling table for holding a base material having a modeling surface for ejecting; a position adjusting mechanism for adjusting the relative position of the three-dimensional space of the modeling table with respect to the dispensing section; the dispensing section; the curing means; a control unit for controlling the position adjusting mechanism, wherein the control unit continuously discharges the modeling material a plurality of times while the discharging unit is stationary with respect to the modeling table, thereby forming a layered body of the modeling material; is formed, and after the plurality of ejections, the laminate is cured by the curing means.

In this three-dimensional modeling apparatus, the position adjusting mechanism can be configured to be able to adjust the tilt angle of the modeling table. In addition, the control section can be configured to control the position adjustment mechanism so that the discharge direction of the modeling material and the normal line of the base material substantially coincide with each other.

In addition, this three-dimensional modeling apparatus may further include a slice data generation unit that divides the three-dimensional data of the modeling material into slice data based on the curved surface shape data of the modeling surface. Also, the control section can be configured to move the discharge section relative to the modeling table along a discharge path. The control unit is configured to repeat the movement of the ejection unit along the ejection path, the ejection of the modeling material by the ejection unit, and the hardening of the modeling material by the hardening unit until an end point of the ejection path. can be

Further, in the three-dimensional modeling method according to the present invention, a dispensing unit that dispenses modeling material for forming a target object is kept stationary with respect to a modeling table on which a base material is placed, and the modeling material is continuously applied. forming a layered body of the modeling material by ejecting the molding material a plurality of times; irradiating the layered body of the modeling material with light or heat to cure the layered body; and moving along.

This three-dimensional modeling method can further include a step of adjusting the tilt angle of the modeling table. In this case, the inclination angle of the modeling table can be adjusted so that the discharge direction of the modeling material and the normal line of the base material substantially coincide. Also, this method may further include a step of dividing the three-dimensional data of the modeling material into slice data based on the curved surface shape data of the modeling surface.

ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the three-dimensional-molding apparatus and method which enable molding of a three-dimensional molded object with higher precision in an inkjet method.

1 is a schematic perspective view showing the overall configuration of a 3D printer 100 according to a first embodiment; FIG. 3 is a perspective view showing an example of a specific configuration of a position/tilt angle adjusting mechanism 15; FIG. FIG. 4 is a schematic diagram illustrating a basic procedure for forming a target object AS on a base material BE in the 3D printer 100 of the first embodiment; 2 is a block diagram illustrating an example of detailed configuration of a control unit 200 of the 3D printer 100 according to the first embodiment; FIG. FIG. 4 is a schematic diagram for explaining generation of three-dimensional data of a target object AS and slice data Si when the shape of the modeling surface of the base material BE is a curved surface; 4 is a flowchart for explaining procedures of a three-dimensional modeling method using the 3D printer 100 of the first embodiment; 4 is a schematic diagram for explaining how the tilt angle of the modeling table 16 is adjusted by the position/tilt angle adjusting mechanism 15. FIG. 4 is a timing chart showing an example of waveforms of drive signals Ssh, Sij, and Smc output from a control CPU 202; It is a schematic perspective view showing the overall configuration of a 3D printer 100 according to a second embodiment.

Hereinafter, this embodiment will be described with reference to the accompanying drawings. In the accompanying drawings, functionally identical elements may be labeled with the same numbers. It should be noted that although the attached drawings show embodiments and implementation examples in accordance with the principles of the present disclosure, they are for the purpose of understanding the present disclosure and are in no way used to interpret the present disclosure in a restrictive manner. isn't it. The description herein is merely exemplary and is not intended to limit the scope or application of this disclosure in any way.

Although the present embodiments are described in sufficient detail to enable those skilled in the art to practice the present disclosure, other implementations and configurations are possible without departing from the scope and spirit of the present disclosure. It is necessary to understand that it is possible to change the composition/structure and replace various elements. Therefore, the following description should not be construed as being limited to this.

[First embodiment]
FIG. 1 is a schematic perspective view showing the overall configuration of a 3D printer 100 according to the first embodiment. This 3D printer 100 includes a frame 11, a Z gantry 12, a Y gantry 13, an X direction rail 14, a position/tilt angle adjustment mechanism 15, a modeling table 16, an ink tank 17, an inkjet head 18 (ejection part), a curing head 19 ( hardening means), and lifting devices 20A and 20B. Also, a control unit 200 is provided for controlling each unit in the 3D printer 100 .

The frame 11 has a rectangular framework, and accommodates therein a Z gantry 12 and the like, which will be described later. Also, the Z gantry 12 is configured to be movable in the Z direction in FIG. 1 by lifting devices 20A and 20B inside the frame 11 .

The Y gantry 13 is configured to be slidable on the surface of the Z gantry 12 along the Y direction in FIG. An X-direction rail 14 extending with the X direction as a longitudinal direction is connected to the inner wall of the Y gantry 13, and a position/tilt angle adjustment mechanism 15 is movably arranged along the X-direction rail 14. . The position/tilt angle adjustment mechanism 15 holds the modeling table 16 and is configured to be able to adjust the inclination direction of the mounting surface of the modeling table 16 . The modeling table 16 is a base on which a substrate for forming a target object is placed.

The position/tilt angle adjustment mechanism 15 can be an adjustment mechanism having a 6-axis parallel link mechanism as shown in FIG. 2 as an example. The mechanism shown in FIG. 2 includes a base 151 slidable along the X-direction rail 14, sliders 152 radially arranged on the surface of the base 151, and sliders 152 whose lower ends are slidable. and a sliding bar 153 that is held and whose upper end is connected to the bottom surface of the modeling table 16 via a universal joint or the like (not shown).

The position/tilt angle adjustment mechanism 15 (position adjustment mechanism) can move the molding table 16 in three directions of XYZ (three-dimensional direction, three-dimensional space) by means of the Z gantry 12, the Y gantry 13, and the X direction rails 14. In addition, by adjusting the position of the lower end of the slide bar 153, the tilt angle of the modeling table 16 can be adjusted. According to this configuration, the tilt angle can be adjusted in three directions. That is, the Z gantry 12, the Y gantry 13, the X direction rail 14, and the position/tilt angle adjustment mechanism 15 enable adjustment in six axial directions including the XYZ directions. The Z gantry 12, Y gantry 13, and position/tilt angle adjustment mechanism 15 are driven by actuators in drive detection mechanisms 208-1 to 208-6, which will be described later, and their positions and tilt angles (rotation amounts) are driven. It is detected by sensors in detection mechanisms 208-1 to 208-6.

The position/inclination angle adjustment mechanism 15 adjusts the inclination angle so that the direction of ink ejection from the inkjet head 18 substantially coincides with the normal line of the modeling surface of the substrate during the modeling operation by ink ejection. It should be noted that the position/inclination angle adjusting mechanism 15 can be omitted when the base material has a planar shape (plate material, etc.).

By the above-described operations of the Z gantry 12, Y gantry 13, and position/tilt angle adjusting mechanism 15, the modeling table 16 can be moved in three directions of X, Y, and Z directions. Furthermore, the tilt angle of the modeling table 16 can be adjusted by adjusting the tilt angle using the position/tilt angle adjusting mechanism 15 . By adjusting the inclination angle of the modeling plane of the substrate on the modeling table 16, it becomes possible to easily and highly precisely perform additional modeling even on a substrate having a curved modeling plane.

In the apparatus of FIG. 1, the ink tank 17, the inkjet head 18, and the curing head 19 are fixedly held by the frame 11 above the modeling table 16. As shown in FIG. The modeling process can be executed by moving the modeling table 16 relative to the inkjet head 18 . If necessary, a movement adjustment mechanism may be provided so that the ink tank 17, the inkjet head 18, and the curing head 19 can be moved with respect to the frame 11. FIG. In the movement control of the modeling table 16, the distance between the substrate BE placed on the modeling table 16 or the target object AS and the inkjet head 18 is controlled to maintain a predetermined clearance distance. is preferably done. This control may be performed based on the measurement results obtained by measuring with a distance sensor such as an optical sensor, or may be performed based on the CAD data of the base material BE.

The ink tank 17 holds ink ejected from the inkjet head 18 . Then, the inkjet head 18 ejects the ink along the gravitational direction (Z direction) to form a three-dimensional modeled object. In this 3D printer 100 , the inkjet head 18 is configured to eject ink in a stationary state with respect to the frame 11 and modeling table 16 . During ejection of ink by the inkjet head 18, the modeling table 16 is also in a stationary state and ejects ink. Therefore, the ink from the inkjet head 18 is ejected along the vertical direction (Z direction) with respect to the ejection target position.

As the ink, an ultraviolet curable ink that is cured by being irradiated with ultraviolet rays can be used. In addition to ultraviolet rays, curable inks that are cured by heating or electron beam irradiation can also be used. An example using ultraviolet curable ink will be mainly described below as an example.

The 3D printer 100 of the first embodiment employs a vector scanning method in which the inkjet head 18 is moved along the position where the modeling material is formed to form a three-dimensional model, as will be described later. That is, unlike the raster scan method in which a modeled object is formed by scanning the entire modeling area along a plurality of parallel scanning lines, in the vector scan method, the inkjet head 18 only selects the position where the modeling material should be formed. A spitting path is generated by the computer through which the inkjet head 18 moves relative to the build table 16 along the spitting path.

Furthermore, in this 3D printer 100, while executing the vector scan method, as shown in FIG. 3, while the inkjet head 18 is stationary at the same location, ink is repeatedly ejected onto the base material BE a plurality of times (( 1)), and after the ink is discharged a plurality of times, a curing process such as ultraviolet irradiation is performed ((2)) to form a layered product of the ink, and the target object AS is formed on the base material BE. As an example, the ink jet head 18 ejects about 5 to 20 pl of ink each time, and this ejection is repeated at the same location about tens to thousands of times, and then a curing process is performed. As described above, the inkjet head 18 is configured to eject ink while stationary with respect to the frame 11 and the modeling table 16 . As a result, it is possible to form a columnar shaped object having a height corresponding to the number of times ink is ejected. When the inkjet head ejects ink while moving in the scanning direction, the ink flies in an oblique direction that is the sum of the vector in the moving direction of the inkjet head and the vector in the ink ejection direction. For this reason, it is not possible to form a columnar shaped object as shown in FIG. As in the present embodiment, the ink is continuously ejected a plurality of times while the inkjet head 18 is stationary with respect to the modeling table 16, and then cured, thereby forming such a columnar modeled object. Become.

After a predetermined number of times of ejection and curing, the inkjet head 18 moves along a predetermined ejection path ((3)), and the above processes (1) and (2) are repeated. The number of ejections at the same location depends on the amount of ink ejected per ejection, various properties of the ink (including viscosity), environmental temperature, and properties of the substrate (material, surface roughness, curvature, etc.).

In the vector scan method in the first embodiment, the inkjet head 18 may be moved relative to the modeling table 16, and the object to be moved may be the modeling table 16 or the inkjet head 18. may However, in any case, the ink jet head 18 is kept stationary with respect to the modeling table 16 during ink ejection. In the following embodiments, the former method will be mainly described, but the present invention is not limited to this.

In order to form a columnar shaped object as shown in FIG. 2 by continuously ejecting ink, it is preferable that the ink to be ejected has a viscosity equal to or higher than a predetermined value. As an example, when the ultraviolet curable ink is formed using a polymerizable monomer or the like as a material, the viscosity of the ink can be 20 mPa·s or less. However, as long as an ink laminate can be formed, the ink material, viscosity, and presence or absence of a mixture do not matter. It is assumed that the required viscosity value varies depending on the ink material, the mixture material or ratio, the environmental temperature during modeling, the ejection amount per shot, and other conditions. In addition, the ultraviolet curable ink may be a solvent-free type or a solvent type (containing a solvent as a base material).

The 3D printer 100 is controlled by various control signals from the controller 200 . FIG. 4 shows an example of a detailed configuration of the control section 200. As shown in FIG. The control unit 200 includes a host PC 201, a control CPU 202, a head control unit 203, a curing head driver 204, and an inkjet head driver as components for controlling the inkjet head 18, the curing head 19, and the drive detection mechanisms 208-1 to 208-6. 205 , a mechanism control unit 206 and a mechanism driver 207 . The drive detection mechanisms 208-1 to 208-6 operate the Z gantry 12, the Y gantry 13, and the position/tilt angle adjustment mechanism 15 to move the modeling table 16 in the XYZ directions and adjust the tilt angle, respectively, by means of built-in actuators. and detect its position and tilt angle with the built-in sensor.

Based on the three-dimensional data of the target object AS, the host PC 201 decomposes the three-dimensional data into slice data Si, which are a plurality of curved surface data arranged in the stacking direction. That is, the host PC 201 functions as a slice data generator that divides three-dimensional data into slice data. The slice data Si is given a shape that matches the shape of the modeling surface of the base material BE on which the target object AS is to be formed. For example, if the shape of the modeling surface of the base material BE is a plane, the slice data Si can also be a plane shape. On the other hand, when the modeling surface of the base material BE is curved, it is preferable that the three-dimensional data of the target object AS be given a shape along this curved surface, as shown in FIG. Moreover, it is preferable that the slice data Si also have a curved surface shape that matches the shape of the modeling surface of the base material BE. Each piece of slice data Si has a thickness corresponding to a plurality of ink ejections. Note that the plurality of slice data Si in the stacking direction do not all need to have a uniform thickness, and the thicknesses may be different from each other.

Returning to FIG. 4, the description continues. The host PC 201 further generates control data for controlling the inkjet head 18, curing head 19, and drive detection mechanisms 208-1 to 208-6 based on the generated slice data. The host PC 201 is configured to be able to set ejection path data indicating the relative movement path of the inkjet head 18 based on control data using a CAM tool. The set ejection path is verified in advance by the host PC 201 according to the three-dimensional data of the target object AS, the operating environment of the apparatus, the property data of the ink, and other various data (including temperature, humidity, etc.) related to the modeling environment. Modifications are applied. If pre-verification is unnecessary, the CAM tool can be omitted and ejection pass data can be generated based only on slice data.

The control CPU 202 controls the ink ejection/curing control data for controlling the inkjet head 18 and the curing head 19 and the drive detection mechanisms 208-1 to 208-6 based on the ejection pass data output from the host PC 201. drive control data.

The head control unit 203 sends a driving signal Smc to the curing head driver 204 according to the ejection/curing control data. Output. The curing head driver 204 drives the curing head 19 according to this drive signal Smc.

In addition, the head control unit 203 indicates to the inkjet head driver 205 the start timing of ejection of ink ejected from the inkjet head 18, the number of ejections, the ejection amount per ejection, etc., according to the ink ejection/curing control data. It outputs the drive signal Sij. The inkjet head driver 205 drives the inkjet head 18 according to this drive signal Sij.

The mechanism control unit 206 outputs to the mechanism driver 207 a drive signal Ssh indicating the drive start timing and drive amount of the drive detection mechanisms 208-1 to 208-6 in accordance with the drive control data. The mechanism driver 207 drives the drive detection mechanisms 208-1 to 208-6 based on this drive signal Ssh.

Next, the execution procedure of the three-dimensional modeling method using the apparatus of FIG. 1 will be described with reference to the flowchart of FIG. First, the host PC 201 acquires curved surface shape data of the modeling surface of the base material BE on which the target object AS is to be formed (step S11). The curved surface shape data of the molding surface may be obtained by actually photographing the molding surface of the base material BE with a camera (not shown), or may be obtained by receiving CAD data of the base material BE from the outside. is also possible.

Next, slice data Si of the three-dimensional data of the target object AS is generated from the object data and the curved surface shape data of the object surface obtained in step S11 (step S12). As described with reference to FIG. 5, the three-dimensional data of the target object is sliced so that the shape of the curved surface shape data of the modeling surface and the shape of the slice data Si approximately match.

When the slice data Si is generated, an ejection path along which the inkjet head 18 relatively moves is generated in the host PC 201 based on the slice data Si (step S13). After the host PC 201 completes the ejection to the modeling area in _the Nth slice data SN, the host PC 201 proceeds to the ejection to the modeling area in the N+1th slice data _SN+1. Generate a path. When the ejection pass is generated, as described above, ink ejection/curing control data and drive control data are generated according to this ejection pass (steps S14 and S15).

After that, the driving detection mechanisms 208-1 to 208-6 are driven to move the modeling table 16 to the initial position of the discharge path, and the tilt angle of the modeling table 16 is adjusted according to the curved surface shape data of the modeling surface (step S16). Movement in the XYZ directions is performed by movement of the Z gantry 12, Y gantry 13, and position/tilt angle adjustment mechanism 15 along the X direction rails . Further, as shown in FIG. 7, by adjusting the amount of movement of the six sliding bars 153, it is possible to adjust the tilt angles in three directions. As a result, the normal to the ink ejection position on the modeling surface SF can be made substantially parallel to the Z direction.

When it is detected that the adjustment of the position and the inclination angle of the modeling table 16 is completed (step S17), the modeling table 16 and the inkjet head 18 are kept relatively stationary at that position, and The ejection of ink from the inkjet head 18 is repeated for n times (step S18). When the ejection of the ink n times at the same location is completed, the ejected ink is irradiated with ultraviolet rays from the curing head 19, and the ink is cured by the ultraviolet rays (step S19). After that, the inkjet head 18 reaches the end point of the ejection path by moving along the ejection path, and the operations of steps S16 to S19 are repeated until the modeling along the ejection path is completed (step S20).

FIG. 8 shows an example of waveforms of the drive signals Ssh, Sij, and Smc output from the control CPU 202. As shown in FIG. When the drive detection mechanism Ssh is activated, the position and tilt angle of the modeling table 16 are controlled according to the information contained in the signal Ssh. When the sensor detects that the desired position and tilt angle have been obtained, the drive signal Sij rises. Since the drive signal Sij causes ink to be continuously ejected from the inkjet head 18, it can be a continuous pulse signal as shown in FIG. 8, and ink is ejected from the inkjet head 18 for each pulse.

When the ejection of the ink is finished, the drive signal Smc rises, whereby the curing head 19 irradiates the laminate of ink with ultraviolet rays, and the ink on the laminate is cured. The above signals are sequentially repeated until the end point of the ejection pass.

As described above, according to the three-dimensional modeling apparatus according to the first embodiment, the inkjet head 18 continuously ejects ink while stationary with respect to the modeling table 16 along the generated ejection path. is ejected, and then the laminated ink model is cured by ultraviolet irradiation or the like. By this operation, it is possible to form a columnar modeled object having a width corresponding to the width of the ejected ink on the modeled surface. By repeating the continuous ink ejection, ultraviolet curing, and movement of the inkjet head 18 along the ejection path, additional modeling can be performed on the base material with high accuracy.

Further, in the first embodiment, the tilt angle of the modeling table 16 is adjusted by the position/tilt angle adjusting mechanism 15, and the direction of ejection of the ink from the inkjet head 18 and the normal line of the modeling surface of the base material BE are adjusted. direction can be substantially matched. By matching both, it becomes possible to form the above columnar shaped articles with higher precision.

[Second embodiment]
Next, a three-dimensional modeling apparatus according to a second embodiment will be described with reference to FIG. In FIG. 9, the same reference numerals are given to the same components as in FIG. 1, so redundant description will be omitted below.

The three-dimensional modeling apparatus of the second embodiment differs from that of the first embodiment in the structure of the position/tilt angle adjusting mechanism 15. FIG. The position/tilt angle adjusting mechanism 15 of the first embodiment has a six-axis parallel link mechanism, and thus has a configuration capable of adjusting the tilt angle in three directions in addition to the three directions of the XYZ directions. On the other hand, the position/tilt angle adjusting mechanism 15 of the second embodiment can adjust the tilt angle only in two directions, and can be adjusted in five directions including the XYZ directions.

The position/tilt angle adjusting mechanism 15 of the second embodiment includes a rotary sliding portion 154, a base 155, a rotating shaft 156, and a shaft 157, as shown in FIG. 9 as an example. The rotary sliding portion 154 is linearly movable along the X-direction rail 14 and is also configured to be rotatable along the radial direction of the X-direction rail 14 . The bottom surface of the base 155 is connected to the upper end of the rotary sliding portion 154 .

The base 155 has side walls rising in the Z direction at both ends in the Y direction, and a rotary shaft 156 is attached between these two side walls. The rotary shaft 156 is attached with the Y direction as its longitudinal direction, and is configured to be rotatable in the radial direction with respect to the side wall of the base 155 .

A lower end of a shaft 157 is attached to the rotating shaft 156 , and the modeling table 16 is connected to an upper end of the shaft 157 . According to this configuration, the rotation of the rotary sliding portion 154 and the rotary shaft 156 allows the modeling table 16 to rotate in two directions, thereby adjusting the tilt angle in two directions.

Although several embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and modifications can be made without departing from the scope of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are included in the scope of the invention described in the claims and equivalents thereof.

For example, in the above embodiments, an example of executing the vector scan method has been described, but the present invention is not limited to this. In a state in which the inkjet head 18 is stationary with respect to the modeling table 16, the ink is continuously ejected a plurality of times to form a layered body of the ink, and after the ejection of the plurality of times, the layered body is cured by the curing head 19. A raster scan or similar method may be employed as long as it works. The structure of the inkjet head when the raster scan method is adopted may be a line head or a shuttle head. In this case, the inkjet head is provided with a plurality of nozzles (ejection ports), and by arranging the nozzle rows in a plurality of rows, the positional relationship between the inkjet head 18 and the modeling table 16 in the normal direction is maintained. Efficient lamination can also be achieved using multiple nozzles within the flat range.

DESCRIPTION OF SYMBOLS 11... Frame 12... Z gantry 13... Y gantry 14... X direction rail 15... Position/tilt angle adjustment mechanism 16... Modeling table 17... Ink tank 18... Inkjet head 19... Curing head 20A , 20B... Lifting device 100... 3D printer 151... Base 152... Slider 153... Sliding bar 200... Control unit 201... Host PC 202... Control CPU 203... Head control unit 204... Curing head driver 205 Inkjet head driver 206 Mechanism control unit 207 Mechanism driver 208-1 to 6 Drive detection mechanism AS Target object BE Base material.

Claims (6)

a discharge unit for discharging a modeling material;
Curing means for curing the modeling material by applying light or heat to the modeling material;
a modeling table for holding a substrate having a modeling surface for discharging the modeling material;
a position adjustment mechanism that adjusts the relative position of the three-dimensional space of the modeling table with respect to the discharge section;
a control unit that controls the discharge unit, the curing means, and the position adjustment mechanism;
a slice data generator that divides the three-dimensional data of the modeling material into slice data based on the shape data of the modeling surface;
with
The controller continuously dispenses the modeling material a plurality of times in a state in which the dispense section is stationary with respect to the modeling table to form a layered body of the modeling material. operable to cure the laminate by curing means;
The position adjustment mechanism is configured to be able to adjust the tilt angle of the modeling table,
The control unit controls the position adjustment mechanism so that the discharge direction of the modeling material and the normal line of the modeling surface of the base material substantially match.
A three-dimensional modeling apparatus characterized by: 2. The three-dimensional modeling apparatus according to claim 1 , wherein said control section is configured to relatively move said ejection section with respect to said modeling table along an ejection path. The control unit is configured to repeat movement of the discharge unit along the discharge path, discharge of the modeling material by the discharge unit, and curing of the modeling material by the curing means until an end point of the discharge path. , The three-dimensional modeling apparatus according to claim 2 . The dispensing unit for dispensing the modeling material for forming the target object is kept stationary with respect to the modeling table on which the base material is placed, and the modeling material is successively ejected a plurality of times to form a laminate of the modeling material. forming a
a step of irradiating the layered body of the modeling material with light or heat to cure the layered body;
moving the dispensing portion along a dispensing path ;
adjusting the tilt angle of the modeling table;
a step of dividing the three-dimensional data of the modeling material into slice data based on the shape data of the modeling surface from which the modeling material is discharged;
with
The three-dimensional modeling method, wherein the inclination angle of the modeling table is adjusted so that the discharge direction of the modeling material and the normal line of the modeling surface of the base material substantially match. The step of moving the ejection unit along the ejection path includes moving the ejection unit relative to the modeling table along the ejection path.
The three-dimensional fabrication method according to claim 4. The three-dimensional modeling method according to claim 5, wherein the movement of the ejection section along the ejection path, the ejection of the modeling material by the ejection section, and the hardening of the modeling material are repeated until an end point of the ejection path.

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