JP7010722B2 - Manufacturing method and manufacturing equipment for laminated shaped objects - Google Patents

Description

The present invention relates to a manufacturing method and a manufacturing apparatus for a laminated model.

In recent years, the needs for 3D printers as a means of production have been increasing, and research and development have been carried out for practical use in the aircraft industry and the like, especially for application to metal materials. A 3D printer using a metal material melts a metal powder or a metal wire by using a heat source such as a laser or an arc, and laminates the molten metal to form a modeled object.

Conventionally, it has been known that a weld metal of multi-layer welding is peened for each layer to make the structure finer and improve the fatigue strength (see, for example, Patent Document 1). Further, it is also known that when the weld metal in the groove is ultrasonically flaw detected, the weld metal is peened after each layer is welded in order to prevent the inspection property from being deteriorated by the structure of the weld metal. (See, for example, Patent Document 2).

Japanese Unexamined Patent Publication No. 1-202390 Japanese Patent No. 3160514

By the way, since the laminated model is manufactured by solidification of the molten metal, the strength also varies due to the variation in the solidified structure. Further, when the generated oxide film is not completely melted at the time of forming the next layer, the oxide film is caught in the molten metal and becomes an inclusion, which causes a decrease in strength. Further, since the surface of the weld bead is uneven, it is difficult to inspect internal defects such as ultrasonic flaw detection, and flattening by surface grinding is required.
The methods described in Patent Documents 1 and 2 do not consider the molten metal formed by laminated molding.

The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to homogenize the solidified structure to suppress the variation in strength, and further to satisfactorily remove the oxide film to obtain a high-quality laminated model. It is an object of the present invention to provide a manufacturing method and a manufacturing apparatus of a laminated model which can be manufactured. Another object is to provide a method and an apparatus for manufacturing a laminated model, which can avoid a failure due to a high temperature of a non-destructive inspection tool.

The present invention has the following configuration.
(1) A method for manufacturing a laminated model, in which a welded bead obtained by melting and solidifying a filler metal is formed by a torch and laminated to form a laminated model.
A temperature monitoring process for monitoring the temperature of the welded bead formed by the torch, and
A peening process in which the striking tool is made to follow the torch at a first interval based on the temperature of the welded bead and the welded bead is striked.
And
In the peening process, the target height of the impact by the impact tool is set at a position obtained by adding the expected height of the welded bead to be formed to the target height of the torch.
Manufacturing method of laminated model.
(2) A device for manufacturing a laminated model, which forms a welded bead obtained by melting and solidifying a filler metal and laminating it to form a laminated model.
With the torch forming the welded bead,
A temperature detection sensor that detects the temperature of the welded bead formed by the torch, and
A striking tool that is provided so as to be able to follow the torch at a first interval based on the temperature of the welded bead and strikes the welded bead.
Equipped with
A device for manufacturing a laminated model in which a non-destructive inspection tool for flaw detection inspection of the welded bead is provided so as to be able to follow the impact tool .

According to the method and apparatus for manufacturing a laminated model of the present invention, it is possible to homogenize the solidified structure to suppress the variation in strength, and to satisfactorily remove the oxide film to produce a high-quality laminated model. can.

Further, according to the other manufacturing method and manufacturing apparatus of the laminated model of the present invention, it is possible to avoid the failure of the non-destructive inspection tool due to the high temperature.

It is a schematic schematic block diagram of the manufacturing system which is the manufacturing apparatus of the laminated model of this invention. It is a schematic block diagram explaining the bead processing apparatus. It is a schematic block diagram of the striking tool explaining the striking tool. It is a perspective view of the laminated model which laminated the welded bead layer. It is a schematic side view of a part of a welded bead in the process of forming explaining a peening process.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic schematic configuration diagram of a manufacturing system which is a manufacturing apparatus for a laminated model of the present invention. FIG. 2 is a schematic configuration diagram illustrating a bead processing apparatus.

The manufacturing system 100 having this configuration includes a laminated modeling device 11, a bead processing device 16, and a controller 15 that collectively controls the laminated modeling device 11 and the bead processing device 16.

The laminated modeling device 11 includes a welding robot 19 having a torch 17 on the tip shaft, and a filler material supply unit 21 that supplies the filler material (welding wire) M to the torch 17. The torch 17 holds the filler metal M in a state of protruding from the tip.

The controller 15 has a CAD / CAM unit 31, an orbit calculation unit 33, a storage unit 35, and a control unit 37 to which these are connected.

The welding robot 19 is an articulated robot, and the filler metal M is continuously supplied to the torch 17 provided on the tip shaft. The position and posture of the torch 17 can be arbitrarily set three-dimensionally within the range of the degree of freedom of the robot arm.

The torch 17 has a shield nozzle (not shown), and shield gas is supplied from the shield nozzle. The arc welding method used in this configuration may be either a consumable electrode type such as shielded metal arc welding or carbon dioxide arc welding, or a non-consumable electrode type such as TIG welding or plasma arc welding. It is appropriately selected according to the situation.

For example, in the case of the consumable electrode type, a contact tip is arranged inside the shield nozzle, and the filler metal M to which the melting current is supplied is held by the contact tip. The torch 17 generates an arc from the tip of the filler M in a shield gas atmosphere while holding the filler M. The filler material M is fed from the filler material supply unit 21 to the torch 17 by a feeding mechanism (not shown) attached to a robot arm or the like. Then, when the filler metal M that is continuously fed is melted and solidified while moving the torch 17, a linear welded bead 25 that is a melt-solidified body of the filler metal M is formed.

The heat source for melting the filler metal M is not limited to the above-mentioned arc. For example, a heat source by another method such as a heating method using both an arc and a laser, a heating method using plasma, and a heating method using an electron beam or a laser may be adopted. When heating with an electron beam or a laser, the amount of heating can be controlled more finely, the state of the welded bead can be maintained more appropriately, and the quality of the laminated structure can be further improved.

The CAD / CAM unit 31 creates shape data of the modeled object W to be manufactured, and then divides the data into a plurality of layers to generate layer shape data representing the shape of each layer. The trajectory calculation unit 33 obtains the movement trajectory of the torch 17 based on the generated layer shape data. The storage unit 35 stores data such as the generated layer shape data and the movement locus of the torch 17.

The control unit 37 drives the welding robot 19 by executing a drive program based on the layer shape data stored in the storage unit 35 and the movement locus of the torch 17. That is, the welding robot 19 moves the torch 17 while melting the filler metal M with an arc based on the movement locus of the torch 17 generated by the trajectory calculation unit 33 in response to a command from the controller 15. Note that FIG. 1 shows a state in which a welded bead 25 is formed on the upper surface of a plate-shaped base plate 20 arranged on a horizontal plane to form a laminated model W.

As shown in FIG. 2, the bead processing device 16 has a temperature detection sensor 41, a striking tool 43, and an ultrasonic flaw detection probe (non-destructive inspection tool) 45. The bead processing device 16 is connected to the controller 15 and is controlled by the controller 15.

The temperature detection sensor 41 detects the temperature of the welded bead 25 formed by the torch 17 from the upper side thereof. The temperature detection sensor 41 is movable following the torch 17. For example, the temperature detection sensor 41 may be mounted on the torch 17 at a position where the temperature of the welded bead 25 can be detected.

The striking tool 43 impacts the welded bead 25 formed by the torch 17 from the upper surface thereof for peening. The striking tool 43 is movable following the torch 17. As shown in FIG. 3, the striking tool 43 includes a cooling mechanism 51. The cooling mechanism 51 has a flow path 53 opened on the tip end side of the striking tool 43, and cooling gas is supplied to this flow path 53. The cooling mechanism 51 blows cooling gas onto the portion of the weld bead 25 hit by the hitting tool 43 to cool the welded bead 25. The cooling mechanism 51 may cool the striking portion by cooling the striking tool 43 itself with cooling gas or cooling water.

The ultrasonic flaw detection probe 45 detects ultrasonic waves incident on the welded bead 25 formed by the torch 17. The ultrasonic flaw detection probe 45 is a non-destructive inspection tool that performs a flaw detection inspection of the welded bead 25 based on the detected ultrasonic waves. The ultrasonic flaw detection probe 45 is said to be movable following the torch 17.
That is, the torch 17, the striking tool 43, and the ultrasonic flaw detection probe 45 are arranged in the above order along the welded bead 25 to be formed. Further, the striking tool 43 is arranged so that the first distance L1 described later with the torch 17 can be adjusted. Further, it is preferable that the ultrasonic flaw detection probe 45 is also arranged with respect to the torch 17 so that the second interval L2 described later can be adjusted.

The manufacturing system 100 having the above configuration melts and melts the filler metal M while moving the torch 17 by driving the welding robot 19 along the movement locus of the torch 17 generated from the set layer shape data. The filler metal M is supplied onto the base plate 20. As a result, as shown in FIG. 4, a welded bead layer 34 in which a plurality of linear welded beads 25 are arranged in a row is formed on the base plate 20, and further, the welded bead layer 34 is laminated in a plurality of layers. The laminated model W is modeled.

In the present embodiment, when the welding bead 25 constituting the laminated model W is formed by the manufacturing system 100, the controller 15 controls the bead processing device 16 to perform temperature monitoring processing, peening processing, cooling processing, and flaw detection inspection processing. conduct.

Next, the temperature monitoring process, the peening process, the cooling process, and the flaw detection inspection process by the controller 15 at the time of forming the welded bead 25 will be described. Here, a case where the welded bead 25 of the first layer is formed on the base plate 20 will be described as an example.

(Temperature monitoring process)
When the torch 17 moves on the upper surface of the horizontally arranged base plate 20 to form the welded bead 25, the controller 15 performs a temperature monitoring process for detecting the temperature of the welded bead 25 by the temperature detection sensor 41 (FIG. 2). reference). Then, the temperature data of the welded bead 25 detected by the temperature detection sensor 41 is transmitted to the controller 15.

(Peening process)
As shown in FIG. 5, the controller 15 causes the striking tool 43 to follow the torch 17 with a first interval L1 based on the temperature data from the temperature detection sensor 41, and the striking tool 43 causes the welding bead 25 to follow. Performs peening processing to hit the upper surface.

The first interval L1 in this peening process is the interval between the formation portion A of the welded bead 25 by the torch 17 and the impact portion B of the welded bead 25 by the impact tool 43, and is based on the temperature data from the temperature detection sensor 41. Set. The first interval L1 is, for example, in the case of modeling mild steel (for example, a material equivalent to SM490), the interval is such that the temperature of the welded bead 25 is in the range of 400 ° C. to 800 ° C. at the hitting point B with respect to the torch 17. It may be set as appropriate in the inside.

Here, when the temperature of the welded bead 25 at the striking point B is lower than 400 ° C., the Young's modulus and the yield stress of the welded bead 25 are too high, 90% or more, with respect to the Young's modulus and the yield stress at room temperature, and the striking tool. It becomes difficult to flatten the welded bead 25 by hitting 43. Further, when the temperature of the welded bead at the hitting portion B is higher than 800 ° C., the Young's modulus and the yield stress of the welded bead 25 are less than half of the Young's modulus and the yield stress at room temperature, which is too low, and the hitting tool 43 is hit. The welded bead 25 is deformed more than necessary.

The temperature of the welded bead 25 at the hitting point B is calculated from the detected temperature in consideration of the cooling rate to the hitting point B according to the distance from the hitting point B of the temperature detection sensor 41, for example. ..
Further, the first spacing L1 is intended to be the length at which the welded bead 25 is formed between the two positions of the welded bead 25 where the torch 17 and the striking tool 43 face each other. For example, in the case of a linear welded bead 25 as in the present embodiment, the distance between the torch 17 and the striking tool 43 and the length of the welded bead 25 are substantially the same.

In the peening process, the target height H1 of the welding bead 25 by the impact tool 43 is set to the height obtained by adding the estimated height of the welding bead 25 to the target height H2 of the welding bead 25 by the torch 17. .. When forming the first layer welded bead 25, the target height H2 of the welded bead 25 is the height position of the upper surface of the base plate 20. When the welded bead 25 is formed on the upper surface of the already formed welded bead layer 34, the target height H2 of the welded bead 25 is the upper surface height position of the welded bead layer 34 of the front layer. Further, when the welding bead 25 is hit with the hitting tool 43, the welding bead 25 is deformed by the load of the hitting tool 43. Therefore, when the welding bead 25 is hit with the hitting tool 43 at the target height H1 of the hitting of the welding bead 25, the welding bead 25 is welded. The bead 25 has a formation height H3 that is lower by the amount of its deformation. That is, by performing this peening process, the welded bead 25 is set to the height H3 of one layer whose height is set, and the upper surface thereof is flattened.

(Cooling process)
In the peening process on the welded bead 25 by the striking tool 43, the cooling mechanism 51 cools the impacted portion B on the welded bead 25 by the striking tool 43.

(Dye penetrant inspection process)
The ultrasonic flaw detection probe 45, which is a non-destructive inspection tool, is made to follow the striking tool 43. Then, the ultrasonic flaw detection probe 45 is used to perform a flaw detection inspection process for flaw detection inspection of the welded bead 25 after the peening treatment. In this flaw detection inspection process, an ultrasonic current (several kHz to several tens of kHz) is superimposed on the current applied to melt the filler metal M in the torch 17, so that it is generated between the welding torch and the laminated model W. The welding arc to be welded vibrates according to the strength and frequency of the ultrasonic current, and ultrasonic waves are incident on the welded bead 25 to be formed. For example, when a pulse current is applied to melt the filler metal M, an ultrasonic current is superimposed during the period in which the base current is applied. Then, the ultrasonic wave incident on the welded bead 25 is detected by the ultrasonic flaw detection probe 45 that follows the striking tool 43, and the flaw detection inspection of the welded bead 25 is performed based on the detected ultrasonic wave. At that time, since the upper surface of the welded bead 25 is flattened, the flaw can be detected in the welded bead 25 with high accuracy.

As shown in FIG. 2, it is preferable that the ultrasonic flaw detection probe 45 is arranged with a second interval L2 or more from the torch 17 in order to avoid a failure due to heat from the welded bead 25.
The second spacing L2 is also intended to be the length at which the weld bead 25 is formed between the two positions of the weld bead 25 facing the torch 17 and the ultrasonic flaw detector 45.
Further, by cooling the striking portion B by the cooling mechanism 51 of the striking tool 43, the temperature of the welded bead 25 at the position where the ultrasonic flaw detection probe 45 faces is lowered, so that the ultrasonic flaw detection probe 45 and the striking tool 43 are combined. The third interval L3 between them can be set short, and thus the second interval L2 can also be set short.

The ultrasonic flaw detection probe 45 may have only an ultrasonic wave receiving function or may have an ultrasonic wave transmitting function.
Further, when the ultrasonic flaw detection probe 45 having the ultrasonic wave transmission / reception function is to be followed, it is not necessary to superimpose the ultrasonic current, and in this case, the ultrasonic flaw detection probe 45 causes the ultrasonic wave to be incident on the welded bead. At the same time, the ultrasonic wave is detected.
Further, as the ultrasonic flaw detection probe 45, a non-contact type probe such as EMAT or a contact type probe equipped with an elastic body is desirable.

As described above, according to the method and apparatus for manufacturing a laminated model according to the present embodiment, the temperature of the welded bead 25 formed by the torch 17 is monitored, and the temperature of the welded bead 25 is based on the temperature of the welded bead 25. By striking the welded bead 25 with the striking tool 43 following the torch 17 with an interval L1 of 1, the crystal grains of the welded bead 25 are made finer to make the solidified structure uniform, and the strength varies. It can be suppressed and the oxide film can be removed satisfactorily.

Further, the upper surface of the welded bead 25 formed by the torch 17 can be flattened by hitting with the hitting tool 43, and the formation of the welded bead 25 in the next layer can be stabilized and the formation accuracy can be improved, and the welding bead 25 is flattened. It is possible to accurately detect flaws in the welded bead 25 from the upper surface. Thereby, the quality of the laminated model W to be manufactured can be improved.

In particular, in the peening process, the target height H1 of the impact by the impact tool 43 is set to the position where the expected height of the welded bead 25 to be formed is added to the target height H2 of the torch 17, so that the welded bead 25 can be formed. The upper surface can be evenly flattened, and the welded bead 25 of the next layer can be formed more stably and with high accuracy.

Further, in the peening process, the time until the welded bead 25 of the next layer solidifies can be shortened by performing the cooling process of cooling the impacted portion B on the welded bead 25 by the impacting tool 43. Therefore, since the temperature of the welded bead 25 in the front layer is high, it is possible to suppress shape defects due to sagging or the like caused by a long time until the welded bead 25 in the next layer solidifies. As a result, the quality of the laminated model W can be improved, and the modeling efficiency can be improved.

Further, since the ultrasonic flaw detection probe 45, which is a non-destructive inspection tool, is made to follow the impact tool 43 to perform a flaw detection inspection process for flaw detection inspection of the welded bead 25 after the peening process, welding flattened by the impact tool 43 is performed. The flaw detection of the welded bead 25 can be accurately inspected by the ultrasonic flaw detection probe 45 on the upper surface of the bead 25.

Further, by providing the torch 17 with the ultrasonic flaw detection probe 45 so as to be able to follow the second interval L2 or more, it is possible to avoid the failure of the ultrasonic flaw detection probe 45 due to the high temperature.

In particular, in the flaw detection inspection process, the ultrasonic flaw detection probe, which is a non-destructive inspection tool, does not use a separate device for incidenting ultrasonic waves on the weld bead 25 by superimposing an ultrasonic current on the current applied to the torch 17. The flaw detection inspection of the welded bead 25 can be easily performed by the 45.

It should be noted that the present invention is not limited to the above-described embodiment, and those skilled in the art may modify or apply the invention based on the mutual combination of the configurations of the embodiments, the description of the specification, and the well-known technique. Is also the subject of the present invention and is included in the scope for which protection is sought.

For example, the ultrasonic flaw detection probe 45 may be arranged at a place where ultrasonic waves incident on the welded bead 25, such as the back surface of the base plate 20, can be detected.
Further, in the above embodiment, the ultrasonic current is superimposed on the current applied to the torch 17, but the present invention is not limited to this, and a separate device for generating ultrasonic waves to be incident on the welded bead 25 is provided. Alternatively, the ultrasonic flaw detection probe 45 may generate ultrasonic waves and incident on the welded bead 25 to detect the welded bead 25.

Further, the temperature detection sensor 41 may detect the temperature of the welded bead 25 at any position between the torch 17 and the striking tool 43.

Further, in the manufacturing apparatus of the above embodiment, the bead processing apparatus 16 has been described as having both a striking tool 43 and an ultrasonic flaw detection probe (non-destructive inspection tool) 45 in addition to the temperature detection sensor 41. The present invention is not limited to this, and may be configured to have either a striking tool 43 or an ultrasonic flaw detection probe 45 in addition to the temperature detection sensor 41.
That is, the present invention may include a temperature detection sensor and a striking tool, and the striking tool may be configured to follow the torch at a first interval based on the temperature of the welded bead.
Further, the present invention may include a temperature detection sensor and a non-destructive inspection tool, and the non-destructive inspection tool may be configured to follow the torch at a second interval based on the temperature of the welded bead.

As described above, the following matters are disclosed in this specification.
(1) A method for manufacturing a laminated model, in which a welded bead obtained by melting and solidifying a filler metal is formed by a torch and laminated to form a laminated model.
A temperature monitoring process for monitoring the temperature of the welded bead formed by the torch, and
A peening process in which the striking tool is made to follow the torch at a first interval based on the temperature of the welded bead and the welded bead is striked.
A method for manufacturing a laminated model.
According to this method for manufacturing a laminated structure, the temperature of the welded bead formed by the torch is monitored, and the striking tool is made to follow the torch at a first interval based on the temperature of the welded bead. By striking the welded bead, the crystal grains of the welded bead can be made finer to make the solidified structure uniform, the variation in strength can be suppressed, and the oxide film can be satisfactorily removed.
In addition, the upper surface of the welded bead formed by the torch can be flattened by hitting with a striking tool, the formation of the welded bead of the next layer can be stabilized and the formation accuracy can be improved, and welding is performed from the flattened upper surface. It is possible to accurately detect the flaw in the bead.
This makes it possible to improve the quality of the laminated model to be manufactured.

(2) In the peening process, the target height of the impact by the impact tool is set at a position obtained by adding the expected height of the welded bead to be formed to the target height of the torch. Manufacturing method of the modeled object.
According to this method for manufacturing a laminated model, the upper surface of the welded bead can be evenly flattened, and the welded bead of the next layer can be formed more stably and with high accuracy.

(3) The method for manufacturing a laminated model according to (1) or (2), wherein in the peening process, a cooling process is performed to cool the impacted portion on the welded bead by the impact tool.
According to this method for manufacturing a laminated model, it is possible to shorten the time until the welding bead of the next layer solidifies by cooling the portion hitting the welding bead by the hitting tool. Therefore, since the temperature of the welded bead in the front layer is high, the time until the welded bead in the next layer solidifies becomes long, and the shape defect due to sagging or the like is suppressed. As a result, the quality of the laminated model can be improved, and the modeling efficiency can be improved.

(4) The stacking according to any one of (1) to (3), wherein a non-destructive inspection tool is made to follow the striking tool and a flaw detection inspection process is performed to detect and inspect the welded bead after the peening process. Manufacturing method of the modeled object.
According to this method of manufacturing a laminated model, the non-destructive inspection tool is made to follow the striking tool, so that the non-destructive inspection tool accurately inspects the flaw detection of the welded bead on the upper surface of the welded bead flattened by the striking tool. be able to.

(5) In the flaw detection inspection process, ultrasonic waves are incident on the welded bead by superimposing an ultrasonic current on the current applied to the torch, and the ultrasonic waves are detected by the nondestructive inspection tool composed of an ultrasonic flaw detection probe. The method for manufacturing a laminated model according to (4) to be detected.
According to this method for manufacturing a laminated model, ultrasonic waves are a non-destructive inspection tool by superimposing an ultrasonic current on a current applied to a torch without using a separate device for incident ultrasonic waves on a welded bead. The flaw detection probe can easily perform a flaw detection inspection of the welded bead.

(6) In the flaw detection inspection process, the non-destructive inspection tool including an ultrasonic flaw detection probe having an ultrasonic transmission / reception function causes ultrasonic waves to be incident on the welded bead and detects the ultrasonic waves in (4). The method for manufacturing a laminated model according to the description.
According to this method for manufacturing a laminated model, the flaw detection inspection of the welded bead can be easily performed by the ultrasonic flaw detection probe without superimposing the ultrasonic current on the current applied to the torch.

(7) A device for manufacturing a laminated model, which forms a welded bead obtained by melting and solidifying a filler metal and laminating it to form a laminated model.
With the torch forming the welded bead,
A temperature detection sensor that detects the temperature of the welded bead formed by the torch, and
A striking tool that is provided so as to be able to follow the torch at a first interval based on the temperature of the welded bead and strikes the welded bead.
Equipment for manufacturing laminated objects.
According to this laminated model manufacturing apparatus, the welding tool is made to follow the torch at a first interval based on the temperature of the welded bead detected by the temperature detection sensor, and the welded bead is hit. The crystal grains of the welded bead can be made finer to make the solidified structure uniform, the variation in strength can be suppressed, and the oxide film can be satisfactorily removed.
In addition, the upper surface of the welded bead formed by the torch can be flattened by hitting with a striking tool, the formation of the welded bead of the next layer can be stabilized and the formation accuracy can be improved, and welding is performed from the flattened upper surface. It is possible to accurately detect the flaw in the bead.
This makes it possible to manufacture a high-quality laminated model.

(8) The striking tool according to (7), wherein the striking tool includes a cooling mechanism for cooling a striking portion of the welded bead.
According to this laminated model manufacturing apparatus, it is possible to shorten the time until the welding bead of the next layer solidifies by cooling the portion hitting the welding bead by the hitting tool with a cooling mechanism. Therefore, since the temperature of the welded bead in the front layer is high, the time until the welded bead in the next layer solidifies becomes long, and the shape defect due to sagging or the like is suppressed. As a result, the quality of the laminated model can be improved, and the modeling efficiency can be improved.

(9) The apparatus for manufacturing a laminated model according to (7) or (8), wherein a non-destructive inspection tool for flaw detection inspection of the welded bead is provided so as to be able to follow the impact tool.
According to this laminated model manufacturing equipment, the non-destructive inspection tool is made to follow the striking tool, so that the non-destructive inspection tool accurately inspects the flaw detection of the welded bead on the upper surface of the welded bead flattened by the striking tool. be able to.

(10) The apparatus for manufacturing a laminated model according to (9), wherein the non-destructive inspection tool is provided so as to be able to follow the torch with a second interval or more.
According to this laminated model manufacturing apparatus, by making the torch follow the non-destructive inspection tool at a interval of a second interval or more, it is possible to avoid a failure of the non-destructive inspection tool due to high temperature.

(11) The non-destructive inspection tool comprises an ultrasonic flaw detection probe that detects ultrasonic waves incident on the welded bead by superimposing an ultrasonic current on the current applied to the torch (9) or (10). ) The manufacturing apparatus for the laminated model.
According to this laminated model manufacturing device, ultrasonic waves are a non-destructive inspection tool by superimposing an ultrasonic current on the current applied to the torch without using a separate device for incident ultrasonic waves on the welded bead. The flaw detection probe can easily perform a flaw detection inspection of the welded bead.

(12) The laminated molding according to (9) or (10), wherein the non-destructive inspection tool has an ultrasonic wave transmission / reception function and comprises an ultrasonic flaw detection probe that detects the ultrasonic waves incident on the welded bead. Equipment for manufacturing things.
According to this laminated model manufacturing apparatus, the flaw detection inspection of the welded bead can be easily performed by the ultrasonic flaw detection probe without superimposing the ultrasonic current on the current applied to the torch.

(13) A method for manufacturing a laminated model, in which a welded bead obtained by melting and solidifying a filler metal is formed by a torch and laminated to form a laminated model.
A temperature monitoring process for monitoring the temperature of the welded bead formed by the torch, and
A flaw detection inspection process in which a non-destructive inspection tool is made to follow the torch at a second interval based on the temperature of the welded bead to detect and inspect the welded bead.
A method for manufacturing a laminated model.
According to this method for manufacturing a laminated model, it is possible to avoid failure of the non-destructive inspection tool due to high temperature and inspect the flaw detection of the welded bead with high accuracy.

(14) In the flaw detection inspection process, ultrasonic waves are incident on the welded bead by superimposing an ultrasonic current on the current applied to the torch, and the ultrasonic waves are detected by the nondestructive inspection tool composed of an ultrasonic flaw detection probe. The method for manufacturing a laminated model according to (13) to be detected.
According to this method for manufacturing a laminated model, ultrasonic waves are a non-destructive inspection tool by superimposing an ultrasonic current on a current applied to a torch without using a separate device for incident ultrasonic waves on a welded bead. The flaw detection probe can easily perform a flaw detection inspection of the welded bead.

(15) In the flaw detection inspection process, the non-destructive inspection tool including an ultrasonic flaw detection probe having an ultrasonic transmission / reception function causes ultrasonic waves to be incident on the welded bead and detects the ultrasonic waves (13). The method for manufacturing a laminated model according to the description.
According to this method for manufacturing a laminated model, the flaw detection inspection of the welded bead can be easily performed by the ultrasonic flaw detection probe without superimposing the ultrasonic current on the current applied to the torch.

(16) An apparatus for manufacturing a laminated model, which forms a welded bead obtained by melting and solidifying a filler metal and laminating it to form a laminated model.
With the torch forming the welded bead,
A temperature detection sensor that detects the temperature of the welded bead formed by the torch, and
A non-destructive inspection tool that is provided so as to be able to follow the torch at a second interval based on the temperature of the welded bead and inspects the welded bead for flaw detection.
Equipment for manufacturing laminated objects.
According to this method for manufacturing a laminated model, it is possible to avoid failure of the non-destructive inspection tool due to high temperature and inspect the flaw detection of the welded bead with high accuracy.

(17) The non-destructive inspection tool according to (16), wherein the non-destructive inspection tool comprises an ultrasonic flaw detection probe that detects ultrasonic waves incident on the welded bead by superimposing an ultrasonic current on the current applied to the torch. Equipment for manufacturing laminated products.
According to this laminated model manufacturing device, ultrasonic waves are a non-destructive inspection tool by superimposing an ultrasonic current on the current applied to the torch without using a separate device for incident ultrasonic waves on the welded bead. The flaw detection probe can easily perform a flaw detection inspection of the welded bead.

(18) The apparatus for manufacturing a laminated model according to (16), wherein the non-destructive inspection tool has an ultrasonic wave transmission / reception function and comprises an ultrasonic flaw detection probe that detects the ultrasonic waves incident on the welded bead. ..
According to this laminated model manufacturing apparatus, the flaw detection inspection of the welded bead can be easily performed by the ultrasonic flaw detection probe without superimposing the ultrasonic current on the current applied to the torch.

17 Torch 25 Welding bead 41 Temperature detection sensor 43 Strike tool 45 Ultrasonic probe (non-destructive inspection tool)
51 Cooling mechanism 100 Manufacturing system (manufacturing equipment)
B Impact location L1 First interval L2 Second interval M filler metal W Laminated model

Claims (10)

It is a method for manufacturing a laminated model, in which a welded bead obtained by melting and solidifying a filler metal is formed by a torch and laminated to form a laminated model.
A temperature monitoring process for monitoring the temperature of the welded bead formed by the torch, and
A peening process in which the striking tool is made to follow the torch at a first interval based on the temperature of the welded bead and the welded bead is striked.
And
In the peening process, the target height of the impact by the impact tool is set at a position obtained by adding the expected height of the welded bead to be formed to the target height of the torch.
Manufacturing method of laminated model. The method for manufacturing a laminated model according to claim 1 , wherein in the peening process, a cooling process for cooling a portion impacted on the welded bead by the impact tool is performed. The method for manufacturing a laminated model according to claim 1 or 2 , wherein a non-destructive inspection tool is made to follow the striking tool, and a flaw detection inspection process is performed to detect and inspect the welded bead after the peening process. In the flaw detection inspection process, an ultrasonic current is superimposed on a current applied to the torch to incident an ultrasonic wave on the welded bead, and the ultrasonic wave is detected by the nondestructive inspection tool including an ultrasonic flaw detection probe. Item 3. The method for manufacturing a laminated model according to Item 3. The stacking according to claim 3 , wherein in the flaw detection process, an ultrasonic wave is incident on the welded bead by the non-destructive inspection tool composed of an ultrasonic flaw detection probe having an ultrasonic wave transmission / reception function, and the ultrasonic wave is detected. Manufacturing method of the modeled object. It is a manufacturing device for a laminated model that forms a welded bead by melting and solidifying a filler metal and laminating it to form a laminated model.
With the torch forming the welded bead,
A temperature detection sensor that detects the temperature of the welded bead formed by the torch, and
A striking tool that is provided so as to be able to follow the torch at a first interval based on the temperature of the welded bead and strikes the welded bead.
Equipped with
A device for manufacturing a laminated model in which a non-destructive inspection tool for flaw detection inspection of the welded bead is provided so as to be able to follow the impact tool . The apparatus for manufacturing a laminated model according to claim 6 , wherein the striking tool includes a cooling mechanism for cooling a striking point on the welded bead. The apparatus for manufacturing a laminated model according to claim 6 or 7 , wherein the non-destructive inspection tool is provided so as to be able to follow the torch with a second interval or more. The 7th or 8th claim, wherein the nondestructive inspection tool comprises an ultrasonic flaw detection probe that detects an ultrasonic wave incident on the welded bead by superimposing an ultrasonic current on the current applied to the torch. Equipment for manufacturing laminated shaped objects. The nondestructive inspection tool according to any one of claims 6 to 8, wherein the non-destructive inspection tool has a function of transmitting and receiving ultrasonic waves, and comprises an ultrasonic flaw detection probe that detects the ultrasonic waves incident on the welded bead. Equipment for manufacturing laminated shaped objects.

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