JP2022117176A - Method for manufacturing laminated molding and display device - Google Patents

Abstract

To provide a technique for efficiently molding a laminated molding.SOLUTION: A method for manufacturing a laminated molding W includes the following steps. Specifically, the method sets bead routes R1, R2, R3 and R4 and a bead shape to slice data obtained by dividing three-dimensional shape data into a plurality of layers. The method calculates a slag feature amount indicating a residual probability of a slag in a specific part in generated weld beads BD1, BD2, BD3 and BD4 on the basis of at least any one of the slice data, the bead routes R1, R2, R3 and R4 and the bead shape. The method creates a map indicating distribution of a slag feature amount. Parts with relatively low slag feature amounts in the map are set as lamination start points P1, P2, P3 and P4. The weld beads BD1, BD2, BD3 and BD4 are repeatedly laminated along the bead routes R1, R2, R3 and R4 from the lamination start points P1, P2, P3 and P4.SELECTED DRAWING: Figure 6

Description

The present invention relates to a method for manufacturing a layered product and a display device.

2. Description of the Related Art A method is known in which a filler material such as a wire is melted and solidified using an arc to form a welding bead, and a plurality of welding beads are laminated to manufacture a layered product. When laminating a welding bead on the base welding bead that has been formed, if slag exists in the base welding bead, an arc that melts the filler material cannot be generated and an error (arc start error) may occur.

Patent Document 1 discloses an automatic welding method for a consumable electrode type welding machine. In this method, a camera and image processor determine the presence or absence of slag on the weld bead facing the consumable electrode, and if there is no slag, movement of the consumable electrode welder and supply of arc current is resumed. On the other hand, if there is slag, the consumable electrode type welding machine is moved to the turn-back side in that state, and the presence or absence of slag is continuously determined by the camera and the image processing device, and the arc current is supplied at the position where there is no slag. to resume.

Patent document 2 can reduce the amount of fume generation, the amount of spatter generation, and the amount of slag generation, and can obtain a hardfacing weld metal having a flat bead shape and a moderately small penetration depth. A hardfacing MIG arc welding wire and hardfacing MIG arc welding method are disclosed.

JP-A-4-251671 JP 2011-104624 A

Patent Document 1 is a technique for searching for a position free of slag during welding, and Patent Document 2 is a technique for designing the wire itself, which is a filler material. However, if it is possible to grasp the amount of slag and prevent errors that do not cause arcing before starting the manufacturing of the laminate, it is possible to efficiently manufacture the laminate without limiting the type of filler material used. can do.

An object of the present invention is to provide a technology capable of efficiently forming a layered product.

The present invention is a method for manufacturing a laminate-molded article, which includes a laminate obtained by stacking a plurality of welding beads obtained by melting and solidifying a filler material using an arc based on three-dimensional shape data. setting a bead path and a bead shape in slice data obtained by dividing the three-dimensional shape data into a plurality of layers; Based on this, a step of calculating a slag feature quantity representing the probability of survival of slag at a specific location in a weld bead to be generated, a map creation step of creating a map showing the distribution of the slag feature quantity, and a step of creating a map showing the distribution of the slag feature quantity in the map A step of setting a location where the amount is relatively low as a lamination start point, and a step of repeating lamination of welding beads along the bead path from the lamination start point.

Further, the present invention is a display device that assists the manufacture of a laminate-molded product including a laminate in which a plurality of welding beads formed by melting and solidifying a filler material using an arc is stacked based on three-dimensional shape data, A data acquisition unit that acquires slice data obtained by dividing the three-dimensional shape data into a plurality of layers, a bead path, and a bead shape; a calculation unit for calculating a slag feature quantity representing the probability of slag remaining at a specific location in the weld bead; a mapping image creation unit for creating an image obtained by mapping the slag feature quantity with respect to the slice data; a display unit for displaying the image created by the unit.

According to the present invention, it is possible to select and extract a position where an arc start error is unlikely to occur as a lamination start point, and it is possible to reflect information on the lamination start point extracted before the lamination-molded article is formed in the trajectory plan. . Therefore, it is possible to efficiently form a layered product.

FIG. 1 is a configuration diagram of a manufacturing system used for manufacturing a layered product. FIG. 2 is a flow chart of a method for manufacturing a laminate-molded article using the manufacturing system. FIG. 3 is a schematic diagram showing an example of a single-layer laminate-molded article produced by filling the inside of a frame with welding beads. FIG. 4 is an explanatory diagram showing bead paths set to generate the modeled article shown in FIG. FIG. 5 is a schematic diagram showing a map showing the distribution of the slag feature amount created by the mapping image creation unit on the modeled object. FIG. 6 is an explanatory diagram showing setting of the stacking start point.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a configuration diagram of a manufacturing system used for manufacturing a laminate-molded article of the present invention. A manufacturing system 100 for a laminate-molded article having this configuration includes a laminate-molding apparatus 11 , a controller 13 that performs integrated control of the laminate-molding apparatus 11 , and a power supply device 15 .

The layered manufacturing apparatus 11 includes a welding robot 19 having a torch 17 on its tip axis, and a filler material supply section 21 that supplies a filler material (welding wire) M to the torch 17 . A shape sensor 23 is provided along with the torch 17 on the distal end shaft of the welding robot 19 .

The welding robot 19 is a multi-joint robot, and the torch 17 attached to the tip shaft of the robot arm is supported so that the filler material M can be continuously supplied. The position and posture of the torch 17 can be arbitrarily set three-dimensionally within the range of degrees of freedom of the robot arm.

The torch 17 has a shield nozzle (not shown), and a shield gas is supplied from the shield nozzle. The arc welding method may be a consumable electrode type such as coated arc welding or carbon dioxide gas arc welding, or a non-consumable electrode type such as TIG welding or plasma arc welding. be.

For example, in the case of the consumable electrode type, a contact tip is arranged inside the shield nozzle, and the contact tip holds the filler material M to which the melting current is supplied. The torch 17 holds the filler material M and generates an arc from the tip of the filler material M in a shield gas atmosphere. The melt material M is fed from the melt material supply unit 21 to the torch 17 by a delivery mechanism (not shown) attached to a robot arm or the like. When the continuously fed filler material M is melted and solidified while moving the torch 17, a linear welding bead BD, which is a melted and solidified body of the filler material M, is formed on the base plate 51. A laminate-molded article W consisting of the welding bead BD is molded.

As shown in FIG. 1 , the shape sensor 23 is arranged side by side with the torch 17 and is moved together with the torch 17 . This shape sensor 23 is a sensor that measures the shape of the base portion when forming the welding bead BD. As the shape sensor 23, for example, a laser sensor that acquires reflected light of irradiated laser light as height data is used. A three-dimensional shape measuring camera may be used as the shape sensor 23 .

The controller 13 includes a CAD/CAM unit 31, a data acquisition unit 33, a storage unit 35, a calculation unit 37, a mapping image creation unit 39, a display unit 32, an input unit 34, and controls to which these are connected. a portion 41;

The CAD/CAM unit 31 inputs or creates shape data (such as CAD data) of the laminate-molded article W to be manufactured, and cooperates with the data acquisition unit 33 to generate a welding bead BD representing the procedure for forming the laminate-molded article. generate a laminate model of The data acquisition unit 33 acquires slice data obtained by dividing the shape model of the three-dimensional shape data into a plurality of layers corresponding to the height of the welding bead BD, a bead path that is a path for generating the welding bead, and the bead shape. A moving locus of the torch 17 is determined based on the layer shape data including the data of . The CAD/CAM unit 31 generates a drive program for the welding robot 19 and the power supply device 15 that moves the torch 17 to form a weld bead based on the generated layer shape data, data such as the movement trajectory of the torch 17, and the like. . Various data such as the generated drive program are stored in the storage unit 35 .

Based on at least one of the slice data, the bead path, and the bead shape acquired by the data acquisition unit 33, the calculation unit 37 calculates a slag feature quantity representing the probability of slag remaining in the weld bead that has already been formed.

The mapping image creation unit 39 creates a map obtained by mapping the slag feature amount calculated by the calculation unit 37 to the slice data and an image of the map. The display unit 32 is a display device such as a liquid crystal display that displays the image created by the mapping image creation unit 39 . The input unit 34 is an input device such as a keyboard or a mouse that receives operations from an operator.

The control unit 41 executes the driving program stored in the storage unit 35 to drive the welding robot 19, the power supply device 15, and the like. That is, the welding robot 19 moves the torch 17 according to the command from the controller 13 and melts the filler material M with an arc to form a welding bead BD on the base plate 51 .

The base plate 51 is made of a metal plate such as a steel plate, and is basically larger than the bottom surface (lowermost layer surface) of the laminate-molded article W. The base plate 51 is not limited to a plate-like shape, and may be a block-like or rod-like base.

As filler material M, any commercially available welding wire can be used. For example, MAG welding and MIG welding solid wires for mild steel, high-strength steel and low-temperature steel (JIS Z 3312), arc welding flux-cored wires for mild steel, high-strength steel and low-temperature steel (JIS Z 3313), etc. wire can be used.

FIG. 2 shows a flowchart of a method for manufacturing a layered product using the manufacturing system 100 .
Based on the three-dimensional shape data of the CAD/CAM unit 31, the manufacturing system 100 manufactures a layered product including a layered product in which a plurality of welding beads formed by melting and solidifying the filler material M using an arc are stacked. The method for manufacturing a laminate-molded article includes acquisition of slice data (step S1), setting of bead paths and bead shapes (step S2), calculation of slag feature amounts (step S3), mapping of slag feature amounts (step S4), image display (step S5), setting of the lamination start point (step S6), and lamination of welding beads (step S7). Each step will be described below.

(Acquisition of slice data: step S1)
The data acquisition unit 33 divides the three-dimensional shape data (CAD data, etc.) of the laminate-molded object W created or input by the CAD/CAM unit 31 into a plurality of layers on a plane perpendicular to the axis in the lamination direction of the welding beads. Get slice data. A specific slice data acquisition method may be a commercially available software product, and is not particularly limited.

(Setting bead path and bead shape: step S2)
Next, the data acquisition unit 33 sets the bead path and bead shape for the acquired slice data. FIG. 3 shows an example of bead path and bead shape settings. In the following description, one direction in the slice data plane is the X direction, the direction perpendicular to the X direction is the Y direction, and the direction perpendicular to the X and Y directions is the Z direction. The axis in the stacking direction of the welding bead is the Z direction.

FIG. 3 is a schematic diagram showing an example of a layered product for one layer formed by filling welding beads BD1 to BD4 into a U-shaped frame (wall) 53 extending in the Z direction. . The welding bead BD1 is a U-shaped welding bead formed along the frame portion 53 inside the frame portion 53 in plan view, and is formed along the X direction and the Y direction. The welding beads BD2, BD3, and BD4 are welding beads that are linearly formed along the X direction inside the welding bead BD1 in plan view. Welding beads BD2, BD3, and BD4 are arranged in the Y direction. Welding beads BD2, BD3, and BD4 have the same bead shape, but differ from the bead shape of welding bead BD1.

FIG. 4 is an explanatory diagram showing bead paths set to generate the modeled object shown in FIG. Each is a bead path for forming weld beads BD2, BD3, BD4. The method of setting the bead path and bead shape shown in FIGS. 3 and 4 is not particularly limited. As for the bead shape, if the welding bead conditions for realizing the desired height and width and the shape profile are stored in advance in a database, a bead shape corresponding to the height and width can be given. Also, the bead path may be appropriately set in consideration of the welding area to be filled, the bead width, the upper limit of the number of lamination passes, and the like.

(Calculation of slag feature quantity: step S3)
Next, based on at least one of the slice data, the bead path, and the bead shape acquired by the data acquisition unit 33, the calculation unit 37 calculates a specific location (a specific region determined based on the coordinates) in the weld bead to be generated. ) to calculate the slag feature quantity representing the probability of survival of the slag. The slag feature amount is defined as an amount corresponding to the occurrence probability (density) of slag that causes an arc start error that prevents the occurrence of an arc (arc discharge). The calculation unit 37 can appropriately calculate the slag feature amount based on, for example, the following factors (1) to (4), but the factors are not necessarily limited to the following factors.

(1) Material factor A
The material factor A is a factor derived from the type of material related to the formation of the welding bead, and the material here is mainly the wire as the filler material M and the base plate 51 as the base material. The material factor A mainly includes a term A1 corresponding to the easiness of slag coming out of the wire and the base metal, and a term A2 corresponding to the detachability of the slag generated in the wire and the base metal, and is obtained by A = A1 × A2. be done. For example, a wire from which slag is less likely to occur has a smaller A1 of the base material, and a wire from which slag is easily exfoliated from the base material has a smaller A2 of the base material.

The material of the base material in this example is a steel plate or the like that constitutes the base plate 51, and the material factor A (=A1×A2) is determined by the material of the steel plate or the like. A wire contains various materials, but the material factor A is determined by, for example, the composition amounts (% by mass) of Si and Mg that greatly affect the properties of the wire.

<Si: 0.50 to 3.00% by mass>
Si has the effect of improving the wettability between the molten pool and the base metal, and as a result, flattening the bead shape. A minimum of 0.50% by mass is required for this effect to be effective. Si, on the other hand, combines with the oxygen contained in the wire to generate a vitreous _SiO2 slag. If the Si content exceeds 3.00% by mass, an excessive amount of slag will be generated and the detachability will deteriorate significantly, increasing the load of post-treatment after welding. Therefore, the Si content should be 3.00% by mass or less.

<Mn: 0.30 to 20.00% by mass>
Mn improves the wettability between the molten pool and the base metal, and as a result, has the effect of flattening the bead shape, and also has the effect of increasing the quench hardenability and increasing the hardness of the weld metal. At least 0.30% by mass is required for these effects to be effective. On the other hand, Mn combines with oxygen contained in the wire to generate a strong slag with poor peelability. If the Mn content exceeds 20.00% by mass, the amount of slag generated becomes excessive and the peelability deteriorates significantly, increasing the load of post-treatment after welding. Therefore, the Mn content should be 20.00% by mass or less.

Si has the effect of improving the wettability between the molten pool and the base metal, and as a result, flattening the bead shape. Si, on the other hand, combines with the oxygen contained in the wire to generate a vitreous _SiO2 slag. If the Si content exceeds a predetermined amount, an excessive amount of slag will be generated and the detachability will deteriorate significantly. Moreover, Mn has the effect of improving the wettability between the molten pool and the base metal, resulting in the flattening of the bead shape, and also has the effect of increasing the quench hardenability and increasing the hardness of the weld metal. On the other hand, Mn combines with oxygen contained in the wire to generate a strong slag with poor peelability. If the Mn content exceeds a predetermined amount, the amount of slag generated becomes excessive and the peelability deteriorates significantly.

(2) Location factor B
The location factor B is a factor derived from the phenomenon that the slag existence distribution changes according to the location of the weld bead depending on the viscosity of the slag. It includes a slag distribution term B1 corresponding to the cross-sectional direction perpendicular to the direction and a slag distribution term B2 corresponding to the cross-sectional direction perpendicular to the bead longitudinal direction of the crater portion. Location factor B is determined by either B1 or B2.

The stationary portion includes a straight portion and a bent portion of the welding bead. In this steady portion, B1 is calculated based on the distribution of the function having peaks at the toe of the bead formation and the upper portion (the central portion or the portion where the curvature is larger than the surroundings). The crater portion is the end portion of the welding bead, and B2 is calculated based on the distribution of the function having a peak at the portion corresponding to the contour of the shape of the crater portion.

(3) Welding condition C
The welding condition C is a factor calculated by the ratio of the bead deposition amount V to the bead surface area S, that is, the bead deposition amount V/bead surface area S. The welding condition C increases as the bead deposition amount V increases, and the bead surface area As S becomes smaller, welding condition C becomes larger.

(4) Reduction rate D
The reduction rate D is a factor corresponding to the amount of slag to be removed by performing the slag stripping operation from the welding bead using a tool or the like. If no slag stripping is performed, D is set to 1, for example.

The calculation unit 37 calculates the slag feature quantity from A×B×C×D obtained by multiplying all the above factors, for example. The calculation unit 37 calculates a slag feature quantity for each specific coordinate (specific region) in the slice data. However, the method of calculating the slag feature quantity is not limited to such a method. Depending on the case, one of the material factor A, the location factor B, the welding condition C, and the reduction rate D can be excluded from the calculation, or other factors can be used.

(Mapping of slag feature quantity: step S4)
Next, the mapping image creation unit 39 creates a map showing the distribution of the slag feature amount calculated by the calculation unit 37 . That is, the mapping image creation unit 39 maps the slag feature quantity to the corresponding locations on the slice data for which the bead shape and bead path are set, and creates an image corresponding to the created map.

FIG. 5 is a schematic diagram showing a map showing the distribution of the slag feature amount created by the mapping image creation unit 39 on the modeled object. In this example, there are distributions A1, A2, and A3 with different slag feature amounts, and the magnitude relationship of the slag feature amounts is A1>A2>A3. That is, the distribution A1 has a large amount of slag and is likely to cause an arc start error, while the distribution A3 has a small amount of slag and is less likely to cause an arc start error.

(Image display: step S5)
Next, the display unit 32 displays a map showing the distribution of the slag feature amount created by the mapping image creating unit 39, that is, an image corresponding to the map shown in FIG. The operator can confirm the image and set the stacking start point described below. However, when the controller 13 sets the stacking start point based on map data, the image display step is not necessarily required. The controller 13 including the display unit 32 displays an image to assist the operator in setting the stacking start point, so it can also be understood as a display device that assists the manufacturing of the laminate-molded article W. FIG. It is possible to visually grasp the distribution of the slag feature amount.

(Lamination start point setting: step S6),
The operator searches for and sets the stacking start point while checking the image displayed by the display unit 32 .
The operator sets a location where the slag feature amount is relatively low as the stacking start point in the map indicated by the image. A specific lamination start point can be set, for example, based on the value of the slag feature amount in the contact range (depending on the wire diameter) where the tip of the wire contacts the weld bead of the base material or base. For example, if there is no place where the slag feature value exceeds a predetermined threshold within the contact range of the wire when the wire is brought into contact with a specific region based on specific coordinates, the operator starts laminating the coordinates. Can be set to a point.

Further, in the above state, if there is a portion where the slag feature value exceeds a predetermined threshold within the contact range of the wire, the operator can select a specific area on the preset bead path or a specific area in the vicinity of the bead path. explore the area. If there is no place where the slag feature value exceeds a predetermined threshold within the wire contact range on such an area, the operator can set the reference coordinates of the area as the lamination start point.

If the coordinates to be set as the lamination start point do not exist even after the search as described above, the operator again sets at least one of the bead shape and the bead path, or both, on the slice data, The search for the stacking start point is performed again.

The operator can also reset the bead path based on the number of locations where the slag feature amount is below a predetermined threshold. That is, the bead path having a small number of locations where the slag feature amount exceeds the predetermined threshold value is reset. As a result, it is possible to select a trajectory with a low possibility of occurrence of an arc start error due to slag, and increase the continuous operation time of the manufacturing system 100 for a laminate-molded article.

According to the above steps, the operator designates the coordinates by operating the input unit 34 while viewing the image of the map showing the distribution of the slag feature quantity displayed on the display unit 32, and the control unit 41 performs operation input. , the lamination start point can be set. However, the control unit 41 of the controller 13 may refer to the slag feature amount on the map according to a predetermined program to set an appropriate stacking start point without the operator's input.

FIG. 6 is an explanatory diagram showing the setting of the stacking start point set by the operator or the control unit 41. As shown in FIG. In this example, each of the lamination start points P1, P2, P3, P4 corresponds to bead paths R1, R2, R3, R4. The lamination start point P1 coincides with the start point of the pre-existing bead path R1. Lamination start points P2, P3, and P4 do not coincide with the start points of pre-existing bead paths R2, R3, and R4, and are located near these bead paths. Bead paths R2a, R3a, and R4a extend from lamination start points P2, P3, and P4 in directions opposite to the bead paths R2, R3, and R4 in the X direction, reach the vicinity of the welding bead BD1, and then turn back to form the bead paths R2, R3 and R4 start.

(Lamination of Welding Beads: Step S7)
After the lamination start points P1, P2, P3, and P4 are determined, the controller 13 controls the lamination molding apparatus 11, and the torch 17 starts from the lamination start points P1, P2, P3, and P4, and forms the bead paths R1, R2, and R3. , R4 to melt and solidify the continuously fed filler material M to form a weld bead. When the welding bead formation for one piece of slice data (for one layer) is completed, the steps from step S1 onward are repeated for the slice data of the upper layer, and the welding bead stacking is repeated to manufacture the layered product W.

According to this embodiment, a map showing the distribution of slag feature quantities is created from trajectory planning information including slice data, bead shape, and bead path. It is possible to reflect the information of the lamination start point extracted before the lamination-molded article is formed in the trajectory plan. Therefore, it is possible to efficiently form a layered product.

As described above, this specification discloses the following matters.

(1) A method for manufacturing a laminate-molded article, which includes a laminate obtained by stacking a plurality of welding beads obtained by melting and solidifying a filler material using an arc, based on three-dimensional shape data. ,
setting a bead path and a bead shape in slice data obtained by dividing the three-dimensional shape data into a plurality of layers;
a step of calculating a slag feature quantity representing a probability of survival of slag at a specific location in a welding bead to be generated, based on at least one of the slice data, the bead path, and the bead shape;
a map creation step of creating a map showing the distribution of the slag feature quantity;
A step of setting a location where the slag feature amount is relatively low in the map as a stacking start point;
repeating lamination of welding beads along the bead path from the lamination start point;
A method of manufacturing a laminate-molded article comprising:
As a result, it is possible to select and extract a position where an arc start error is unlikely to occur as a lamination start point, and to reflect the information of the lamination start point extracted before the lamination-molded article is formed in the trajectory plan. Therefore, it is possible to efficiently form a layered product.

(2) The method for manufacturing a laminate-molded article according to (1),
A method for manufacturing a laminate-molded article, wherein the bead path is reset based on the number of locations where the slag feature amount is below a predetermined threshold.
As a result, it is possible to select a trajectory with a low possibility of arc start error due to slag and increase the continuous operation time for manufacturing a laminate-molded article.

(3) A method for manufacturing a laminate-molded article according to (1) or (2),
The slag feature amount includes a material factor derived from the type of material involved in the formation of the weld bead, a location factor derived from a phenomenon in which the slag existence distribution changes according to the location of the weld bead, a bead weld amount and a bead surface area. and a reduction rate corresponding to the amount of slag to be removed from the weld bead by performing the slag peeling operation.
Thereby, a slag feature-value can be calculated appropriately.

(4) Based on three-dimensional shape data, a display device that assists the manufacture of a laminate-molded product including a laminate in which a plurality of welding beads formed by melting and solidifying a filler material using an arc is stacked,
a data acquisition unit that acquires slice data obtained by dividing the three-dimensional shape data into a plurality of layers, a bead path, and a bead shape;
a calculation unit that calculates a slag feature quantity representing a probability of slag remaining at a specific location in a welding bead to be generated based on at least one of the slice data, the bead path, and the bead shape;
a mapping image creation unit that creates an image in which the slag feature amount is mapped to the slice data;
a display unit for displaying the image created by the mapping image creation unit;
A display device.
This makes it possible to visually grasp the distribution of the slag feature quantity.

It should be noted that the present invention is not limited to the above-described embodiments, and can be modified, improved, etc. as appropriate. In addition, the material, shape, size, numerical value, form, number, location, etc. of each component in the above-described embodiment are arbitrary and not limited as long as the present invention can be achieved.

REFERENCE SIGNS LIST 11 additive manufacturing device 13 controller 15 power supply device 17 torch 19 welding robot 21 filler material supply unit 23 shape sensor 31 CAD/CAM unit 32 display unit 33 data acquisition unit 34 input unit 35 storage unit 37 calculation unit 39 mapping image creation unit 41 Control unit 53 Frame unit 100 Laminated article manufacturing system BD, BD1, BD2, BD3, BD4 Welding bead M Filler material P1, P2, P3, P4 Lamination start point R1, R2, R3, R4 Bead path W Laminated article

Claims (4)

Based on three-dimensional shape data, a method for manufacturing a laminate-molded article including a laminate in which a plurality of welding beads formed by melting and solidifying a filler material using an arc is stacked,
setting a bead path and a bead shape in slice data obtained by dividing the three-dimensional shape data into a plurality of layers;
a step of calculating a slag feature quantity representing a probability of survival of slag at a specific location in a welding bead to be generated, based on at least one of the slice data, the bead path, and the bead shape;
a map creation step of creating a map showing the distribution of the slag feature quantity;
A step of setting a location where the slag feature amount is relatively low in the map as a stacking start point;
repeating lamination of welding beads along the bead path from the lamination start point;
A method of manufacturing a laminate-molded article comprising: A method for manufacturing a laminate-molded article according to claim 1,
A method for manufacturing a laminate-molded article, wherein the bead path is reset based on the number of locations where the slag feature amount is below a predetermined threshold. A method for manufacturing a laminate-molded article according to claim 1 or 2,
The slag feature amount includes a material factor derived from the type of material involved in the formation of the weld bead, a location factor derived from a phenomenon in which the slag existence distribution changes according to the location of the weld bead, a bead weld amount and a bead surface area. and a reduction rate corresponding to the amount of slag to be removed from the welding bead by performing the slag peeling operation. Based on three-dimensional shape data, a display device that assists the manufacture of a laminate-molded product including a laminate in which a plurality of welding beads formed by melting and solidifying a filler material using an arc is stacked,
a data acquisition unit that acquires slice data obtained by dividing the three-dimensional shape data into a plurality of layers, a bead path, and a bead shape;
a calculation unit that calculates a slag feature value representing a probability of slag remaining at a specific location in a welding bead to be generated based on at least one of the slice data, the bead path, and the bead shape;
a mapping image creation unit that creates an image in which the slag feature amount is mapped to the slice data;
a display unit for displaying the image created by the mapping image creation unit;
A display device.

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