Parts additive manufacturing method and terminal equipment

Abstract

The present invention discloses a part additive manufacturing method and terminal equipment, which relates to the field of additive manufacturing technology, in order to solve the problem that thin-walled and large aspect ratio parts are easy to deform during forming. The part additive manufacturing method comprises obtaining a three-dimensional model of the part; determining the forming direction of the part; constructing a support structure for supporting the part to obtain a part processing model, the support structure comprises a reinforcing plate and multiple groups of support components, the reinforcing plate is supported on one end of the short tube away from the long tube, each group of support components is connected to the reinforcing plate, each group of support components is supported on the lower part of the corresponding short tube, and the height of the support component in the forming direction gradually decreases from the reinforcing plate to the long tube; printing is performed based on the processing model to obtain a printout; and the printout is processed to obtain a part. The terminal equipment comprises a processing module and a communication module. The part additive manufacturing method provided by the present invention is used to realize the forming of thin-walled and large aspect ratio parts, and reduce the occurrence of deformation and cracking of parts.

Description

Technical Field

[0001] The present invention relates to the technical field of additive manufacturing, and in particular to a part additive manufacturing method and terminal equipment. Background Art

[0002] Metal additive manufacturing technology is currently the most highly engineered additive manufacturing technology and is widely used in many fields. Selective laser melting (SLM) technology is a more mature metal additive manufacturing technology with the advantages of high forming accuracy, good metallurgical quality, flexible manufacturing and short cycle. It is very suitable for the efficient manufacturing of thin-walled, high-performance and high-precision parts such as fuel nozzles, satellite thermal control devices, attitude control sleeves and other aerospace fields.

[0003] For thin-walled parts with a large aspect ratio, especially parts with hollow short tubes distributed on a long tube at a certain angle to the axis of the long tube, laser selective melting forming and manufacturing are difficult to form during the forming and processing process due to the low overall rigidity of the parts, which often causes the parts to deform or even crack, resulting in a high product scrap rate. Summary of the invention

[0004] The purpose of the present invention is to provide a parts additive manufacturing method and terminal equipment, which can be used to realize the additive manufacturing of thin-walled parts with a large aspect ratio, especially parts with hollow short tubes distributed on a long tube at a certain angle to the axis of the long tube, reduce the occurrence of part deformation and cracking, and improve the product qualification rate.

[0005] In order to achieve the above-mentioned object, the present invention provides a part additive manufacturing method for forming a thin-walled part with a large aspect ratio having a long tube and a short tube, wherein the short tube and the long tube intersect and communicate with each other, and the part additive manufacturing method comprises:

[0006] Obtain a 3D model of the part;

[0007] Determine the forming direction of the part based on the three-dimensional model so that the axis of the long tube is perpendicular to the base plate;

[0008] A support structure for supporting the part is constructed in a three-dimensional model to obtain a processing model of the part, wherein the support structure includes a reinforcing plate and multiple groups of support components, the reinforcing plate is connected to the base plate, the forming direction of the reinforcing plate is the same as the forming direction of the long tube, the reinforcing plate is supported on one end of the short tube away from the long tube, each group of support components is connected to the reinforcing plate, each group of support components is supported on the lower part of the corresponding short tube, and the height of the support components in the forming direction gradually decreases along the direction from the reinforcing plate to the long tube;

[0009] Perform additive printing based on the processing model to obtain a printed part;

[0010] The printout is processed to obtain a part.

[0011] Compared with the prior art, the invention provides a method for additive manufacturing of parts, which determines the forming direction of the parts according to the three-dimensional model of the parts, and constructs a support structure for supporting the parts in the three-dimensional model to obtain a processing model of the parts, and prints the parts based on the processing model to obtain printed parts; the printed parts are processed to obtain the parts. The reinforcing plate and multiple groups of supporting components are constructed to support each short tube, which improves the structural stability of the formed parts during the forming process, reduces the forming difficulty of the parts, reduces the deformation and cracking of the parts, and improves the product qualification rate; in addition, the reinforcing plate and multiple groups of supporting components are only connected to the short tube and the connection between the short tube and the long tube, that is, the connection area between the support structure and the long tube is very small and easy to remove.

[0012] Optionally, in the above-mentioned part additive manufacturing method, the support assembly includes:

[0013] A support plate is located below the short tube, one end of the support plate is connected to the reinforcing plate, and the other end of the support plate is supported at the connection between the short tube and the long tube. An angle α is formed between the side of the support plate close to the base plate and the forming direction, and the angle is 30°≤α≤60°;

[0014] The supporting net is supported between the supporting plate and the short tube.

[0015] Optionally, in the above-mentioned 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 reinforcement plate to the long tube.

[0016] Optionally, in the above-mentioned part additive manufacturing method, the width of the support plate in a direction parallel to the reinforcement plate and perpendicular to the forming direction is greater than or equal to 1.5 mm.

[0017] Optionally, in the above-mentioned part additive manufacturing method, the thickness of the reinforcing plate is 2-3 times the wall thickness of the short tube.

[0018] Optionally, in the above-mentioned part additive manufacturing method, the part has short tubes in multiple extension directions, the number of reinforcing plates is the same as the number of extension directions of different short tubes, and the short tubes in the same extension direction are all connected to the same reinforcing plate.

[0019] Optionally, in the above-mentioned part additive manufacturing method, the support structure further includes:

[0020] A compensating piece, one end of which is supported on an end of the short tube away from the long tube, and the other end of which is connected to the reinforcing plate. The compensating piece is used to support each short tube on the reinforcing plate when the end faces of the ends of the multiple short tubes away from the long tube are not in the same vertical plane.

[0021] Optionally, in the above-mentioned part additive manufacturing method, processing the printed part includes:

[0022] Perform wire cutting on the joint between the reinforcement plate and the short tube to separate the reinforcement plate from the parts;

[0023] Perform wire cutting on the connection between the support assembly and the part to separate the support assembly from the part.

[0024] Optionally, in the above-mentioned part additive manufacturing method, wire cutting is performed on the connection between the reinforcing plate and the short tube, including:

[0025] Cutting from the second short tube from top to bottom at the connection between the short tube and the reinforcing plate downward to the base plate, so that the cut short tube and the corresponding supporting assembly are separated from the reinforcing plate;

[0026] Cut the connection between the reinforcement plate and the base plate and the connection between the parts and the base plate to separate the parts and the supporting structure from the base plate;

[0027] The connection between the first short tube and the reinforcing plate from top to bottom is cut, so that the first short tube and the corresponding supporting assembly are separated from the reinforcing plate.

[0028] The present invention also provides a terminal device, which is applied to a laser selective melting forming system having a forming device, and the terminal device comprises:

[0029] A processing module, provided with a storage medium storing the above-mentioned part additive manufacturing method;

[0030] The communication module is connected to the processing module and is used for communicating with the forming equipment.

[0031] Compared with the prior art, the beneficial effects of the terminal device provided by the present invention are the same as the beneficial effects of the parts additive manufacturing method described in the above technical solution, and will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0033] Figure 1 A flowchart of a method for additive manufacturing of parts provided by an embodiment of the present invention;

[0034] Figure 2 A cross-sectional view of a thin-walled, large aspect ratio part having a long tube and a short tube provided in an embodiment of the present invention;

[0035] Figure 3 A top view of a thin-walled part with a large aspect ratio having a long tube and a short tube provided in an embodiment of the present invention;

[0036] Figure 4A schematic diagram of a component structure with a support structure provided by an embodiment of the present invention;

[0037] Figure 5 A cross-sectional view of another thin-walled component with a large aspect ratio having a long tube and a short tube provided in an embodiment of the present invention;

[0038] Figure 6 A bottom view of another thin-walled part with a large aspect ratio having a long tube and a short tube provided in an embodiment of the present invention;

[0039] Figure 7 A control block diagram of a terminal device provided in an embodiment of the present invention.

[0040] Reference numerals:

[0041] 1-parts; 11-long tube; 12-short tube; 2-base plate; 3-support structure; 31-reinforcement plate; 32-support assembly; 321-support plate; 322-support net. DETAILED DESCRIPTION

[0042] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0043] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or 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 indirectly connected to the other element.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. The meaning of "several" is one or more, unless otherwise clearly and specifically defined.

[0045] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "front", "back", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0046] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] Metal additive manufacturing technology is currently the most highly engineered additive manufacturing technology and is widely used in many fields. Selective laser melting (SLM) technology is a more mature metal additive manufacturing technology with the advantages of high forming accuracy, good metallurgical quality, flexible manufacturing and short cycle. It is very suitable for the efficient manufacturing of thin-walled, high-performance and high-precision parts such as fuel nozzles, satellite thermal control devices, attitude control sleeves and other aerospace fields.

[0048] For thin-walled parts with a wall thickness of 0.5mm-3.0mm and a length-to-diameter ratio of 10-200, especially parts with hollow short tubes distributed on a long tube at a certain angle to the axis of the long tube, for example, the long tube of the part has equal or non-equal diameters at various locations, the short tubes are distributed in a straight line or a cross along the circumference of the long tube, and the long tube is a single-layer structure or a multi-layer structure; when this type of parts is manufactured by laser selective melting, due to the low overall stiffness of the parts, deformation or even cracking often occurs during the forming and processing process, resulting in the inability to guarantee the key shape and position tolerances of the product, and a high product scrap rate.

[0049] In order to solve the above problems, Figure 1 As shown, an embodiment of the present invention provides a part additive manufacturing method for forming a thin-walled part with a large aspect ratio having a long tube and a short tube, wherein the short tube and the long tube intersect and communicate with each other, and the part additive manufacturing method comprises:

[0050] Step 101: Obtain a three-dimensional model of the part.

[0051] The 3D model of the part is constructed in 3D software according to the actual size of the part, and the 3D software may be UG, Pro / engineer, etc. The 3D software may be selected according to actual needs, and this is only an example and is not specifically limited.

[0052] The 3D model of the part is obtained by constructing 3D software, such as Figure 2 and Figure 3 As shown, part 1 is a thin-walled part with a large aspect ratio and a long tube 11 and a short tube 12 .

[0053] Step 102 : Determine the forming direction of the part 1 according to the three-dimensional model so that the axis of the long tube 11 is perpendicular to the substrate 2 .

[0054] The forming direction of the part 1 is the direction of increasing height during deposition during the forming process. The forming direction is based on the principle of low printing height, less support, and short forming time. In this embodiment, according to the structural characteristics of the part 1, 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 part 1. Figure 2 and Figure 3 It can be seen that the part 1 has a long tube 11 and several short tubes 12. When 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 part 1, only the short tube 12 has no support, and the rest of the structure has support. Therefore, it is only necessary to build support at the part corresponding to the short tube 12.

[0055] Step 103: Construct a support structure 3 for supporting the part 1 in the three-dimensional model to obtain a processing model of the part 1, wherein the support structure 3 includes a reinforcing plate 31 and multiple groups of support components 32, the reinforcing plate 31 is connected to the base plate 2, the forming direction of the reinforcing plate 31 is the same as the forming direction of the long tube 11, the reinforcing plate 31 is supported on one end of the short tube 12 away from the long tube 11, each group of support components 32 is connected to the reinforcing plate 31, each group of support components 32 is supported on the lower part of the corresponding short tube 12, and the height of the support components 32 in the forming direction gradually decreases from the reinforcing plate 31 to the long tube 11.

[0056] like Figure 4 As shown, the short tube 12 and the support assembly 32 are supported by the reinforcing plate 31. The support assembly 32 arranged below the short tube 12 provides support for the protruding structure corresponding to the short tube 12 of the part 1. The support is mainly provided by the reinforcing plate 31. The support structure 3 hardly exerts any force on the long tube 11, thereby avoiding deformation or damage of the long tube 11 during the re-forming process.

[0057] Specifically, in the above-mentioned part additive manufacturing method, the support assembly 32 includes a support plate 321 and a support net 322, which is located below the short tube 12, one end of the support plate 321 is connected to the reinforcing plate 31, and the other end of the support plate 321 is supported at the connection between the short tube 12 and the long tube 11, and an angle α is formed between the side of the support plate 321 close to the substrate 2 and the forming direction, 30°≤α≤60°; the support net 322 is supported between the support plate 321 and the short tube 12. The reinforcing plate 31 is used to provide support to the supporting plate 321 connected thereto, and then the supporting plate 321 provides support for the supporting net 322, and then the supporting net 322 provides support for the short tube 12 to achieve the forming of the short tube 12. The supporting plate 321 is only supported at the connection between the short tube 12 and the long tube 11, and the supporting effect is mainly provided by the reinforcing plate 31. The force exerted on the long tube 11 is very small, thereby avoiding deformation or damage to the long tube 11. Moreover, the connection area between the supporting net 322 and the short tube 12 is small, which is convenient for disassembly in the later stage. The supporting net 322 has hollow spaces, and the volume of the solid structure is small, which saves forming powder. In addition, the side of the supporting plate 321 close to the substrate 2 has an angle α with the forming direction, 30°≤α≤60°, that is, the lateral structure of the supporting plate 321 changes slowly along the forming direction, thereby facilitating forming.

[0058] As an optional method, in the above-mentioned part additive manufacturing method, the support plate 321 is a wedge-shaped plate, and the thickness of the support plate 321 in the forming direction gradually decreases along the direction from the reinforcing plate 31 to the long tube 11. In this way, the thickness of the support plate 321 supported at the connection between the short tube 12 and the long tube 11 is small, which is convenient for later removal.

[0059] Specifically, in the above-mentioned 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 1.5 mm; illustratively, the width of the support plate 321 in the direction parallel to the reinforcing plate 31 and perpendicular to the forming direction is 1.5 mm, 1.8 mm, 2 mm, 2.3 mm, etc. This arrangement ensures the supporting effect of the support plate 321 on the support net 322.

[0060] Specifically, in the above-mentioned part additive manufacturing method, the thickness of the reinforcing plate 31 is 2-3 times the wall thickness of the short tube 12. This arrangement ensures the rigidity of the reinforcing plate 31 and the supporting effect of the reinforcing plate 31.

[0061] As an optional method, in the above-mentioned part additive manufacturing method, the part 1 has short tubes 12 with multiple extension directions. It should be noted that the extension direction here refers to the extension direction along the radial direction of the short tube, and the extension direction is perpendicular to the forming direction. The number of reinforcing plates 31 is the same as the number of extension directions of different short tubes 12, and the short tubes 12 with the same extension direction are all connected to the same reinforcing plate 31. Figure 4As shown, when the short tubes 12 of the part 1 are symmetrically distributed in two rows along the circumferential direction of the long tube 11, the number of the reinforcing plates 31 is also two, and they are symmetrically distributed on both sides of the part 1; of course, if the part additive manufacturing method provided by the embodiment of the present invention is used to manufacture the Figure 5 and Figure 6 In the case of the part 1 shown, the short tubes 12 of the part 1 are evenly distributed in 4 rows along the circumference of the long tube 11 , and the number of the reinforcing plates 31 is also 4 and is evenly distributed along the circumference of the long tube 11 .

[0062] In some embodiments, the support structure 3 further includes a compensating member, one end of which is supported on the end of the short tube 12 away from the long tube 11, and the other end of which is connected to the reinforcing plate 31. The compensating member is used to support each short tube 12 on the reinforcing plate 31 when the end surfaces of the ends of the multiple short tubes 12 away from the long tube 11 are not in the same vertical plane. Figure 5 In the part 1 shown, the end faces of the multiple short tubes 12 away from the long tube 11 are not in the same vertical plane, and the short tubes 12 are supported on the reinforcing plate 31 by the compensation member. Of course, this is only an optional method, and in other methods, the reinforcing plate 31 can also form a certain angle with the axial direction of the long tube 11, so that the ends of the short tubes 12 in the same extension direction away from the long tube 11 are directly connected to the corresponding reinforcing plate 31.

[0063] Step 104: performing additive printing based on the processing model to obtain a printed part;

[0064] When printing, the processing model of the part is first exported as an SLT format file, and then the processing model of the part is sliced ​​and imported into the printing device, and printed according to the forming direction to obtain a printout. During the printing process, the support structure 3 is formed together with the part.

[0065] Step 105: Heat-treating the printed part.

[0066] According to the processing structure information, the processed printed part is heat treated. When the above technical solution is adopted, the internal structure of the part can be optimized and the mechanical properties of the part can be improved.

[0067] Step 106: Mechanically process the printed part to obtain part 1.

[0068] As an optional method, in the above-mentioned part additive manufacturing method, processing the printed part includes:

[0069] Step 106 - 1 : performing wire cutting on the connection between the reinforcing plate 31 and the short tube 12 to separate the reinforcing plate 31 from the component 1 ;

[0070] Specifically, the wire cutting of the connection between the reinforcing plate 31 and the short tube 12 includes:

[0071] Cut from the connection between the second short tube 12 and the reinforcing plate 31 from top to bottom to the position of the base plate 2, so that the cut short tube 12 and the corresponding support assembly 32 are separated from the reinforcing plate 31; at this time, the first short tube 12 and the reinforcing plate 31 from top to bottom are in a connected state, providing support for the cutting of the connection between other short tubes 12 and the reinforcing plate 31, reducing the risk of deformation caused by the drastic release of stress during the processing;

[0072] Cut the connection between the reinforcing plate 31 and the base plate 2 and the connection between the component 1 and the base plate 2, so that the component 1 and the supporting structure 3 are separated from the base plate 2;

[0073] The connection between 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 supporting assembly 32 are separated from the reinforcing plate 31 .

[0074] When there are multiple reinforcing plates 31, each reinforcing plate 31 is cut in turn from the connection between the second short tube 12 and the reinforcing plate 31 from top to bottom to the position of the substrate 2. After each reinforcing plate 31 is cut, the connection between each reinforcing plate 31 and the substrate 2 and the connection between the part 1 and the substrate 2 are cut. Finally, the connection between the first short tube 12 and the reinforcing plate 31 from top to bottom corresponding to each reinforcing plate 31 is cut in turn.

[0075] Step 106 - 2 : Perform wire cutting on the connection between the support component 32 and the part 1 to separate the support component 32 from the part 1 .

[0076] According to the above-mentioned parts additive manufacturing method and specific implementation process, the parts additive manufacturing method supports each short tube 12 by constructing a reinforcing plate 31 and multiple groups of support components 32, thereby improving the structural stability of the formed part during the forming process, reducing the occurrence of part deformation and cracking, and improving the product qualification rate; in addition, the reinforcing plate 31 and the multiple groups of support components 32 are only connected to the short tube 12 and the connection between the short tube 12 and the long tube 11, that is, the connection area between the support structure 3 and the long tube 11 is very small and easy to remove.

[0077] An embodiment of the present invention also provides a terminal device, which is applied to a laser selective melting forming system with a forming device. The terminal device includes a processing module 110 and a communication module 120. The processing module is provided with a storage medium for storing the above-mentioned part additive manufacturing method; the communication module 120 is connected to the processing module 110 and is used to communicate with the forming device 200.

[0078] The forming device 200 is communicatively connected with the processing module 110 through the communication module 120 possessed by the terminal device. The communication connection method in the embodiment of the present invention can be wireless communication or wired communication. Wireless communication can be based on networking technologies such as wifi and zigbee for communication. Wired communication can achieve communication connection based on data lines or power line carriers. The communication interface can be a standard communication interface. The standard communication interface can be a serial interface or a parallel interface. For example, the terminal device can use I2C (Inter-Integrated Circuit) bus communication, or it can use power line carrier communication technology to achieve communication connection with the forming device 200.

[0079] The processing module 110 may be a processor or a controller, for example, a central processing unit (CPU), a general processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It may implement or execute the logic blocks, modules and circuits described in conjunction with the disclosure of the present invention. The processor may also be a combination that implements a computing function, for example, a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like. The communication module 120 may be a transceiver, a transceiver circuit or a communication interface, and the like. The storage medium may be a memory.

[0080] Compared with the prior art, the beneficial effects of the terminal device provided by the embodiment of the present invention are the same as the beneficial effects of the part additive manufacturing method described in the above technical solution, and will not be elaborated here.

[0081] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0082] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A method for additive manufacturing of parts, characterized in that: Used to form a thin-walled part with a large aspect ratio having a long tube and a short tube, wherein the short tube intersects and communicates with the long tube, and the part additive manufacturing method comprises: Obtain a 3D model of the part; Determining the forming direction of the part according to the three-dimensional model so that the axis of the long tube is perpendicular to the base plate; A support structure for supporting the part is constructed in the three-dimensional model to obtain a processing model of the part, wherein the support structure includes a reinforcing plate and multiple groups of support components, the reinforcing plate is connected to the base plate, the forming direction of the reinforcing plate is the same as the forming direction of the long tube, the reinforcing plate is supported on one end of the short tube away from the long tube, each group of the support components is connected to the reinforcing plate, each group of the support components is supported on the lower part of the corresponding short tube, and the height of the support components in the forming direction gradually decreases along the direction from the reinforcing plate to the long tube; Perform additive printing based on the processing model to obtain a printed part; Processing the printout to obtain the part, The support assembly includes a support plate, which is located below the short tube, one end of the support plate is connected to the reinforcing plate, and the other end of the support plate is supported at the connection between the short tube and the long tube, and an angle α is formed between the side of the support plate close to the base plate and the forming direction, 30°≤α≤60°; A support net, the support net is supported between the support plate and the short tube; The processing of the printout comprises: Performing wire cutting on the connection between the reinforcing plate and the short tube to separate the reinforcing plate from the part; Performing wire cutting on the connection between the support assembly and the part to separate the support assembly from the part; Performing wire cutting on the connection between the reinforcing plate and the short tube includes: Cutting from the connection between the second short tube and the reinforcing plate from top to bottom to the position of the base plate, so that the cut short tube and the corresponding supporting assembly are separated from the reinforcing plate; Cutting the connection between the reinforcing plate and the base plate and the connection between the component and the base plate, so that the component and the supporting structure are separated from the base plate; The connection between the first short tube and the reinforcing plate from top to bottom is cut, so that the first short tube and the corresponding supporting assembly are separated from the reinforcing plate.

2. The part additive manufacturing method according to claim 1, characterized in that: 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 tube.

3. The part additive manufacturing method according to claim 1, characterized in that: The 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 1.5 mm.

4. The part additive manufacturing method according to claim 1, characterized in that: The thickness of the reinforcing plate is 2-3 times the wall thickness of the short tube.

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

6. The part additive manufacturing method according to claim 1, characterized in that: The support structure also includes: A compensating member, one end of which is supported on an end of the short tube away from the long tube, and the other end of which is connected to the reinforcing plate, wherein the compensating member is used to support each of the short tubes on the reinforcing plate when the end surfaces of the ends of the short tubes away from the long tubes are not in the same vertical plane.

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