CN115945699A - Part additive manufacturing method and terminal equipment - Google Patents

Abstract

The invention discloses a part additive manufacturing method and terminal equipment, relates to the technical field of additive manufacturing, and aims to solve the problem that parts with thin walls and large length-diameter ratio are easy to deform during forming. The part additive manufacturing method comprises the steps of obtaining a part three-dimensional model; determining the forming direction of the part; constructing a supporting structure for supporting parts to obtain a part machining model, wherein the supporting structure comprises a reinforcing plate and a plurality of groups of supporting components, the reinforcing plate is supported at one end of the short pipe, which is far away from the long pipe, each group of supporting components are connected to the reinforcing plate, each group of supporting components are supported at the lower part of the corresponding short pipe, and the height of the supporting components in the forming direction is gradually reduced along the direction from the reinforcing plate to the long pipe; printing based on the processing model to obtain a printed piece; and processing the printed piece to obtain the part. The terminal equipment comprises a processing module and a communication module. The part additive manufacturing method provided by the invention is used for realizing the forming of a thin-wall part with a large length-diameter ratio and reducing the deformation and cracking of the part.

Description

Part additive manufacturing method and terminal equipment

Technical Field

The invention relates to the technical field of additive manufacturing, in particular to a part additive manufacturing method and terminal equipment.

Background

The metal additive manufacturing technology is the additive manufacturing technology with higher engineering degree at present, is widely applied to various fields, and the selective laser melting forming (SLM) technology is the metal additive manufacturing technology with higher maturity, has the advantages of high forming precision, good metallurgical quality, flexible manufacturing and short period, and is very suitable for the efficient manufacturing of thin-wall high-performance high-precision parts such as dot matrixes in the aerospace fields such as fuel spray booms, satellite thermal control devices, attitude control sleeves and the like.

For parts with thin walls and large length-diameter ratio, particularly parts with a long pipe on which a hollow short pipe forming a certain angle with the axis of the long pipe is distributed, the parts are melted and formed in a selective laser area, and the parts are difficult to form in the forming and processing process due to small integral rigidity, so that the parts are often deformed or even cracked, and the rejection rate of the products is high.

Disclosure of Invention

The invention aims to provide a part additive manufacturing method and terminal equipment, which are used for realizing additive manufacturing of parts with thin walls and large length-diameter ratio, particularly parts with long pipes distributed with hollow short pipes forming a certain angle with the axis of the long pipe, reducing the deformation and cracking of the parts and improving the product yield.

In order to achieve the above object, the present invention provides a method for manufacturing a thin-walled part with a large length-diameter ratio, the part having a long tube and a short tube, the short tube communicating with the long tube, the method for manufacturing the part including:

acquiring a three-dimensional model of a part;

determining the forming direction of the part according to the three-dimensional model, and enabling the axis of the long pipe to be perpendicular to the substrate;

constructing a supporting structure for supporting a part in a three-dimensional model to obtain a processing model of the part, wherein the supporting structure comprises a reinforced plate and a plurality of groups of supporting components, the reinforced plate is connected to a base plate, the forming direction of the reinforced plate is the same as that of the long pipe, the reinforced plate is supported at one end of the short pipe, which is far away from the long pipe, each group of supporting components is connected to the reinforced plate, each group of supporting components is supported at the lower part of the corresponding short pipe, and the height of the supporting components in the forming direction is gradually reduced along the direction from the reinforced plate to the long pipe;

performing additive printing based on the processing model to obtain a printed piece;

and processing the printed piece to obtain the part.

Compared with the prior art, the part additive manufacturing method provided by the invention has the advantages that the forming direction of the part is determined according to the obtained three-dimensional model of the part, the supporting structure for supporting the part is constructed in the three-dimensional model to obtain the processing model of the part, the part is printed based on the processing model, and the printed part is formed; and processing the printed piece to obtain the part. Each short pipe is supported by the built reinforcing plate and the multiple groups of supporting assemblies, so that the structural stability of a formed part in the forming process is improved, the forming difficulty of the part is reduced, the deformation and cracking of the part are reduced, and the product percent of pass is improved; in addition, the reinforcing plate and the plurality of groups of supporting components are only connected with the short pipe and the joint of the short pipe and the long pipe, namely the connecting area of the supporting structure and the long pipe is small, and the supporting structure and the long pipe are easy to remove.

Optionally, in the above method for manufacturing an additive package part, the support assembly includes:

the supporting plate is positioned below the short pipe, one end of the supporting plate is connected to the reinforcing plate, the other end of the supporting plate is supported at the joint of the short pipe and the long pipe, an included angle alpha is formed between one side of the supporting plate, close to the base plate, and the forming direction, and the included angle alpha is more than or equal to 30 degrees and less than or equal to 60 degrees;

and the supporting net is supported between the supporting plate and the short pipe.

Optionally, in the part additive manufacturing method, the support plate is a wedge-shaped plate, and the thickness of the support plate in the forming direction gradually decreases along the direction from the reinforcing plate to the long pipe.

Optionally, in the part additive manufacturing method described above, a width of the support plate in a direction parallel to the reinforcing plate and perpendicular to the forming direction is greater than or equal to 1.5mm.

Optionally, in the component additive manufacturing method, the thickness of the reinforcing plate is 2 to 3 times the wall thickness of the short pipe.

Optionally, in the method for manufacturing an additive for a part, the part has a plurality of short pipes extending in the same direction, the number of the reinforcing plates is the same as the number of the short pipes extending in different directions, and the short pipes extending in the same direction are all connected to the same reinforcing plate.

Optionally, in the above method for manufacturing an additive material for a part, the support structure further includes:

the compensation piece, the one end of compensation piece is supported in the one end that the long tube was kept away from to the nozzle stub, and the other end of compensation piece is connected in the reinforcing plate, and the compensation piece is used for making every nozzle stub support in the reinforcing plate when a plurality of nozzle stubs keep away from the one end terminal surface of long tube not in same vertical plane.

Optionally, in the method for manufacturing an additive material for a part, the processing the printed product includes:

performing linear cutting on the joint of the reinforcing plate and the short pipe to separate the reinforcing plate from the part;

and performing linear cutting on the joint of the support component and the part to separate the support component from the part.

Optionally, in the method for manufacturing an additive material for a part, the wire cutting is performed on the joint of the reinforcing plate and the short pipe, and the method includes:

cutting downwards to the position of the base plate from the joint of the short pipe positioned at the second from top to bottom and the reinforcing plate, so that the cut short pipe and the corresponding support component are separated from the reinforcing plate;

cutting the joint of the reinforcing plate and the substrate and the joint of the part and the substrate to separate the part and the supporting structure from the substrate;

and cutting the joint of the first short pipe and the reinforcing plate from top to bottom to separate the first short pipe and the corresponding support component from the reinforcing plate.

The invention also provides a terminal device, which is applied to a selective laser melting forming system with a forming device, and comprises:

the processing module is provided with a storage medium for storing the part additive manufacturing method;

and the communication module is connected with the processing module and is used for being in communication connection with the forming equipment.

Compared with the prior art, the beneficial effects of the terminal device provided by the invention are the same as those of the part additive manufacturing method in the technical scheme, and the description is omitted here.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not limit the invention. In the drawings:

fig. 1 is a flowchart of a method for additive manufacturing a part according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a thin-walled, high aspect ratio part having long and short tubes provided in accordance with an embodiment of the present invention;

FIG. 3 is a top view of a thin-walled, high aspect ratio part having a long tube and a short tube according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a component structure constructed with a support structure according to an embodiment of the present invention;

FIG. 5 is a cross-sectional view of another thin-walled, high aspect ratio part having long and short tubes provided in accordance with an embodiment of the present invention;

FIG. 6 is a bottom view of another thin-walled, high aspect ratio part having a long tube and a short tube according to an embodiment of the present invention;

fig. 7 is a control block diagram of a terminal device according to an embodiment of the present invention.

Reference numerals are as follows:

1-parts; 11-long tube; 12-a short pipe; 2-a substrate; 3-a support structure; 31-a reinforcing plate; 32-a support assembly; 321-a support plate; 322-support net.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, which are merely for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and operate, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The metal additive manufacturing technology is the additive manufacturing technology with higher engineering degree at present, is widely applied to various fields, and the selective laser melting forming (SLM) technology is the metal additive manufacturing technology with higher maturity, has the advantages of high forming precision, good metallurgical quality, flexible manufacturing and short period, and is very suitable for the efficient manufacturing of thin-wall high-performance high-precision parts such as dot matrixes in the aerospace fields such as fuel spray booms, satellite thermal control devices, attitude control sleeves and the like.

For thin-wall parts with the wall thickness of 0.5-3.0 mm and the length-diameter ratio of 10-200 and large length-diameter ratio, especially for parts with a long pipe on which a hollow short pipe forming a certain angle with the axis of the long pipe is distributed, illustratively, the long pipe of the part is distributed at each position with equal diameter or non-equal diameter, the short pipes are distributed in a straight shape or a cross shape along the circumferential direction of the long pipe, and the long pipe is of a single-layer structure or a multi-layer structure; when the parts of the type are manufactured by selective laser melting forming, the integral rigidity of the parts is small, deformation and even cracking often occur in the forming and processing processes, so that the key form and position tolerance of the products cannot be ensured, and the rejection rate of the products is high.

In order to solve the above problem, as shown in fig. 1, an embodiment of the present invention provides a part additive manufacturing method for forming a thin-walled, large length-diameter ratio part having a long pipe and a short pipe, the short pipe communicating with an intersection of the long pipe, the part additive manufacturing method including:

step 101: and acquiring a three-dimensional model of the part.

The three-dimensional model of the part is constructed in three-dimensional software, which can be UG, pro/engineer, etc., according to the actual size of the part. The three-dimensional software may be selected according to actual needs, and is only for illustration and is not limited in particular.

A three-dimensional model of the part is obtained through three-dimensional software construction, and as shown in figures 2 and 3, the part 1 is a thin-walled part with a long pipe 11 and a short pipe 12 and a large length-diameter ratio.

Step 102: the forming direction of the part 1 is determined from the three-dimensional model so that the axis of the long tube 11 is perpendicular to the base plate 2.

The forming direction of the part 1 is the direction of the increase when deposited during the forming process. The forming direction is based on the principles of low printing height, less support and short forming time; in the present embodiment, the direction parallel to the axial direction of the long tube 11 and away from the substrate 2 is selected as the forming direction of the component 1 according to the structural characteristics of the component 1. As can be seen from fig. 2 and 3, the component 1 has a long pipe 11 and short pipes 12, and when the direction parallel to the axis of the long pipe 11 and away from the base plate 2 is selected as the forming direction of the component 1, only the short pipes 12 have no support, and the rest of the structure has support, so that only the support needs to be constructed on the corresponding part of the short pipes 12.

Step 103: the method comprises the steps of constructing a supporting structure 3 for supporting the part 1 in a three-dimensional model to obtain a processing model of the part 1, wherein the supporting structure 3 comprises a reinforcing plate 31 and a plurality of groups of supporting components 32, the reinforcing plate 31 is connected to a base plate 2, the forming direction of the reinforcing plate 31 is the same as that of a long pipe 11, the reinforcing plate 31 is supported at one end, away from the long pipe 11, of a short pipe 12, each group of supporting components 32 is connected to the reinforcing plate 31, each group of supporting components 32 is supported at the lower part of the corresponding short pipe 12, and the height of the supporting components 32 in the forming direction is gradually reduced along the direction from the reinforcing plate 31 to the long pipe 11.

As shown in fig. 4, the short pipe 12 and the supporting component 32 are supported by the reinforcing plate 31, while the supporting component 32 disposed below the short pipe 12 provides support for the corresponding protruding structure of the short pipe 12 of the component 1, and mainly provides support by the reinforcing plate 31, the supporting structure 3 hardly generates acting force on the long pipe 11, and deformation or damage is avoided during the reshaping process of the long pipe 11.

Specifically, in the above-mentioned method for manufacturing the part additive, the support assembly 32 includes a support plate 321 and a support net 322, which are located below the short pipe 12, one end of the support plate 321 is connected to the reinforcing plate 31, the other end of the support plate 321 is supported at the connection between the short pipe 12 and the long pipe 11, an included angle α is formed between one side of the support plate 321 close to the base plate 2 and the forming direction, α is greater than or equal to 30 ° and less than or equal to 60 °; support web 322 is supported between support plate 321 and spool 12. The supporting plate 321 connected with the reinforcing plate 31 provides a supporting function for the supporting net 322 through the supporting function, then the supporting net 322 provides a supporting function for the short pipe 12 through the supporting net 322, so that the forming of the short pipe 12 is realized, the supporting plate 321 is only supported at the connection part of the short pipe 12 and the long pipe 11, the supporting function is mainly provided through the reinforcing plate 31, the acting force generated on the long pipe 11 is small, the deformation or the damage of the long pipe 11 is avoided, the connecting area of the supporting net 322 and the short pipe 12 is small, the later-stage detachment is convenient, the supporting net 322 is provided with a hollow space, the solid structure is small in size, and the forming powder is saved; in addition, an included angle alpha is formed between one side of the supporting plate 321 close to the base plate 2 and the forming direction, wherein alpha is more than or equal to 30 degrees and less than or equal to 60 degrees, namely the transverse structure of the supporting plate 321 along the forming direction is slowly changed, so that the forming is convenient.

As an alternative, in the part additive manufacturing method, the supporting plate 321 is a wedge-shaped plate, and the thickness of the supporting plate 321 in the forming direction gradually decreases along the direction from the reinforcing plate 31 to the long pipe 11. With such an arrangement, the supporting plate 321 supported at the joint of the short pipe 12 and the long pipe 11 has a small thickness, so as to facilitate later-stage removal.

Specifically, in the above-described part additive manufacturing method, the width of the support plate 321 in the direction parallel to the reinforcing plate 31 and perpendicular to the forming direction is greater than or equal to 1.5mm; illustratively, the width of the support plate 321 in a direction parallel to the reinforcing plate 31 and perpendicular to the forming direction is 1.5mm, 1.8mm, 2mm, 2.3mm, or the like. So set up, guarantee the supporting effect of backup pad 321 to supporting mesh 322.

Specifically, in the above-described component additive manufacturing method, the thickness of reinforcing plate 31 is 2 to 3 times the thickness of short pipe 12. So set up, guarantee the rigidity of reinforcing plate 31, guarantee reinforcing plate 31's supporting effect.

As an alternative, in the component additive manufacturing method, the component 1 has a plurality of short pipes 12 extending in a plurality of directions, where the extending direction refers to an extending direction along a radial direction of the short pipes, the extending direction is perpendicular to the forming direction, the number of the reinforcing plates 31 is the same as the number of the extending directions of different short pipes 12, and the short pipes 12 in the same extending direction are all connected to the same reinforcing plate 31. As shown in fig. 4, when the short tubes 12 of the part 1 are symmetrically distributed in 2 rows along the circumference of the long tube 11, the number of the reinforcing plates 31 is also 2, and the reinforcing plates are symmetrically distributed on two sides of the part 1; of course, if the part 1 shown in fig. 5 and fig. 6 is manufactured by the part additive manufacturing method provided by the embodiment of the invention, when the short tubes 12 of the part 1 are uniformly distributed in 4 rows along the circumferential direction of the long tube 11, the number of the reinforcing plates 31 is also 4, and is uniform along the circumferential direction of the long tube 11.

In some embodiments, the supporting structure 3 further includes a compensating member, one end of the compensating member is supported on one end of the short pipe 12 far away from the long pipe 11, and the other end of the compensating member is connected to the reinforcing plate 31, and the compensating member is used for supporting each short pipe 12 on the reinforcing plate 31 when the end faces of the short pipes 12 far away from the long pipe 11 are not at the same vertical plane. Illustratively, when the part 1 shown in fig. 5 is manufactured by the part additive manufacturing method provided by the embodiment of the invention, the end surfaces of the short pipes 12 far away from the long pipe 11 are not in the same vertical plane, and the short pipes 12 are supported on the reinforcing plate 31 by the compensation piece. Of course, this is only an alternative way, and in other ways, the reinforcing plates 31 may also be at an angle to the long pipe 11, so that the ends of the short pipes 12 far away from the long pipe 11 in the same extending direction are directly connected with the corresponding reinforcing plates 31.

Step 104: performing additive printing based on the processing model to obtain a printed piece;

when printing is carried out, the machining model of the part is firstly exported to be an SLT format file, then the machining model of the part is sliced, the slicing process is carried out, the slicing process is introduced into printing equipment, printing is carried out according to the forming direction, a printed product is obtained, and in the printing process, the supporting structure 3 is formed along with the part.

Step 105: the printed article is heat treated.

And performing heat treatment on the processed printing piece according to the processing structure information. By adopting the technical scheme, the internal structure organization of the part can be optimized, and the mechanical property of the part is improved.

Step 106: the printed piece is mechanically processed to obtain a part 1.

As an alternative, in the part additive manufacturing method, the processing the printed part includes:

step 106-1: performing linear cutting on the joint of the reinforcing plate 31 and the short pipe 12 to separate the reinforcing plate 31 from the part 1;

specifically, the above-mentioned wire cutting of the joint of the reinforcing plate 31 and the short pipe 12 includes:

cutting downwards to the position of the base plate 2 from the joint of the short pipe 12 and the reinforcing plate 31 which is positioned second from top to bottom, so that the cut short pipe 12 and the corresponding support component 32 are separated from the reinforcing plate 31; at this time, the short pipe 12 and the reinforcing plate 31 which are positioned at the first from top to bottom are in a connecting state, so that a supporting effect is provided for cutting the connecting parts of other short pipes 12 and the reinforcing plate 31, and the deformation risk caused by severe stress release in the treatment process is reduced;

cutting the joint of the reinforcing plate 31 and the substrate 2 and the joint of the part 1 and the substrate 2 to separate the part 1 and the support structure 3 from the substrate 2;

the junction of the first short tube 12 and the reinforcing plate 31 from top to bottom is cut so that the first short tube 12 and the corresponding support member 32 are separated from the reinforcing plate 31.

When the number of the reinforcing plates 31 is plural, the short pipe 12 and the reinforcing plate 31 which are positioned second from top to bottom are sequentially cut down to the position of the substrate 2 corresponding to each reinforcing plate 31, after each reinforcing plate 31 is cut, the joint of each reinforcing plate 31 and the substrate 2 and the joint of the part 1 and the substrate 2 are cut, and finally the joint of the short pipe 12 and the reinforcing plate 31 which are positioned first from top to bottom corresponding to each reinforcing plate 31 is sequentially cut.

Step 106-2: the junction of the support assembly 32 and the part 1 is wire cut to separate the support assembly 32 from the part 1.

According to the part additive manufacturing method and the specific implementation process, each short pipe 12 is supported by the built reinforcing plate 31 and the multiple groups of supporting assemblies 32, so that the structural stability of a formed part in the forming process is improved, the deformation and cracking of the part are reduced, and the product yield is improved; in addition, the reinforcing plate 31 and the plurality of sets of supporting components 32 are only connected with the short pipe 12 and the connection between the short pipe 12 and the long pipe 11, i.e. the connection area between the supporting structure 3 and the long pipe 11 is small and easy to remove.

The embodiment of the invention also provides a terminal device, which is applied to a selective laser melting forming system with a forming device, wherein the terminal device comprises a processing module 110 and a communication module 120, and the processing module is provided with a storage medium for storing the part additive manufacturing method; the communication module 120 is coupled to the processing module 110 for communicative coupling with the forming apparatus 200.

The forming device 200 is communicatively connected to the processing module 110 via a communication module 120 provided in the terminal device. The communication connection mode in the embodiment of the invention can be wireless communication or wired communication. The wireless communication may be based on networking technologies such as wifi, zigbee, and the like. Wired communication may implement a communication connection based on a data line or a power line carrier. The communication interface may be a standard communication interface. The standard communication interface may be a serial interface or a parallel interface. For example, the terminal device may use an I2C (Inter-integrated circuit) bus communication, and may also use a power line carrier communication technology to implement the communication connection with the forming device 200.

The processing module 110 may be a Processor or a controller, and may be, for example, a Central Processing Unit (CPU), a general purpose Processor, a Digital Signal Processor (DSP), an Application-specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the logical blocks, modules, and circuits described in connection with the present disclosure. A processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, a DSP and a microprocessor, or the like. The communication module 120 may be a transceiver, a transceiver circuit or a communication interface, etc. The storage medium may be a memory.

Compared with the prior art, the beneficial effects of the terminal device provided by the embodiment of the invention are the same as those of the part additive manufacturing method in the technical scheme, and the details are not repeated here.

In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (10)

1. A part additive manufacturing method for forming a thin-walled, large-aspect-ratio part having a long tube and a short tube, the short tube intersecting and communicating with the long tube, the part additive manufacturing method comprising:

acquiring a three-dimensional model of a part;

determining the forming direction of the part according to the three-dimensional model, and enabling the axis of the long pipe to be perpendicular to the substrate;

constructing a supporting structure for supporting the part in the three-dimensional model to obtain a machining model of the part, wherein the supporting structure comprises a reinforced plate and a plurality of groups of supporting components, the reinforced plate is connected to the base plate, the forming direction of the reinforced plate is the same as that of the long pipe, the reinforced plate is supported at one end of the short pipe far away from the long pipe, each group of supporting components is connected to the reinforced plate, each group of supporting components is supported at the lower part of the corresponding short pipe, and the height of the supporting components in the forming direction is gradually reduced along the direction from the reinforced plate to the long pipe;

performing additive printing based on the processing model to obtain a printed piece;

and processing the printed part to obtain the part.

2. The part additive manufacturing method of claim 1, wherein the support assembly comprises:

the supporting plate is positioned below the short pipe, one end of the supporting plate is connected to the reinforcing plate, the other end of the supporting plate is supported at the joint of the short pipe and the long pipe, an included angle alpha is formed between one side, close to the substrate, of the supporting plate and the forming direction, and the included angle alpha is larger than or equal to 30 degrees and smaller than or equal to 60 degrees;

a support screen supported between the support plate and the spool.

3. The part additive manufacturing method according to claim 2, wherein the support plate is a wedge-shaped plate, and a thickness of the support plate in a forming direction is gradually reduced along a direction from the reinforcing plate to the long pipe.

4. The part additive manufacturing method according to claim 2, wherein a width of the support plate in a direction parallel to the reinforcing plate and perpendicular to the forming direction is greater than or equal to 1.5mm.

5. The part additive manufacturing method of claim 1, wherein a thickness of the reinforcing plate is 2-3 times a wall thickness of the short tube.

6. The part additive manufacturing method according to claim 1, wherein the part has a plurality of short tubes extending in a plurality of directions, the number of the reinforcing plates is the same as the number of the short tubes extending in the directions, and the short tubes extending in the same direction are all connected to the same reinforcing plate.

7. The part additive manufacturing method of claim 1 wherein the support structure further comprises:

the compensation piece, the one end of compensation piece support in the nozzle stub is kept away from the one end of long tube, the other end of compensation piece connect in strengthen the board, the compensation piece is used for when a plurality of nozzle stubs keep away from the one end terminal surface of long tube is not at same vertical plane, make every nozzle stub support in strengthen the board.

8. The part additive manufacturing method of claim 1, wherein said processing the print comprises:

performing linear cutting on the joint of the reinforcing plate and the short pipe to separate the reinforcing plate from the part;

and performing linear cutting on the joint of the supporting component and the part to separate the supporting component from the part.

9. The part additive manufacturing method of claim 8, wherein the wire cutting a connection of the reinforcing plate and the short tube comprises:

cutting downwards to the position of the base plate from the joint of the short pipe and the reinforcing plate which is positioned second from top to bottom, so that the cut short pipe and the corresponding support component are separated from the reinforcing plate;

cutting the joint of the reinforcing plate and the base plate and the joint of the part and the base plate to separate the part and the supporting structure from the base plate;

and cutting the joint of the short pipe and the reinforcing plate which are positioned at the first from top to bottom to separate the short pipe positioned at the first and the corresponding supporting component from the reinforcing plate.

10. A terminal device for use in a selective laser melting system having a forming device, the terminal device comprising:

a processing module provided with a storage medium storing a method of additive manufacturing of a part according to any of claims 1-9;

and the communication module is connected with the processing module and is used for being in communication connection with the forming equipment.

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