Detachable modular additive manufacturing substrate, application method of detachable modular additive manufacturing substrate and target manufacturing part of detachable modular additive manufacturing substrate

Abstract

The invention relates to the technical field of additive manufacturing, and discloses a detachable modular additive manufacturing substrate, an application method thereof and a target manufacturing device.The method comprises the steps that a plurality of additive manufacturing substrates are determined according to a first target demand, and the plurality of additive manufacturing substrates are spliced into a first composite substrate according to the first target demand; implementing an additive manufacturing process in a preset area of the first composite substrate to obtain a first manufactured part; according to the detachable characteristic of the additive manufacturing substrate, each first manufacturing part is split to obtain a plurality of separated first manufacturing parts, the separated first manufacturing parts are subjected to a non-additive manufacturing process to obtain a plurality of intermediate manufacturing parts, and the intermediate manufacturing parts are subjected to a non-additive manufacturing process to obtain a plurality of second manufacturing parts; on the basis of the splicing characteristic of the additive manufacturing substrates and a second target requirement, the multiple intermediate manufacturing parts are spliced, other additive manufacturing substrates are spliced on the intermediate manufacturing parts for leveling treatment, and second manufacturing parts are obtained; and performing an additive manufacturing process on the second manufactured part to obtain a target manufactured part.

Description

Technical Field

[0001] The present invention relates to the technical field of additive manufacturing, and in particular to an application method of a detachable modular additive manufacturing substrate, a detachable modular additive manufacturing substrate, a target manufacturing part and an additive manufacturing device. Background Art

[0002] At present, in traditional additive manufacturing technology, the fixed substrate used is large in size, heavy in weight, and difficult to install / disassemble, which makes it extremely difficult to combine additive manufacturing with other processes multiple times. Especially for the powder-laying additive manufacturing process in which the powder bed completely covers the entire molding cavity corresponding to the height of the formed component, its composite additive manufacturing technology needs to complete multiple cycles of the process of "additive-other process-additive-other process", involving multiple installation and disassembly and correction and leveling of the substrate between multiple process equipment. Therefore, the composite manufacturing processes currently developed are all based on powder-feeding / wire-feeding metal additive manufacturing processes that do not require leveling and powder bed coverage of the substrate. At the same time, the substrate of traditional powder-feeding additive manufacturing has been modified and designed. According to the shape of the manufactured parts, the additive manufacturing substrate is flexibly designed using a mortise and tenon structure, which not only reduces the use cost and manufacturing cycle of large-format powder-feeding additive manufacturing substrates, but also further improves the feasibility of powder-feeding composite additive manufacturing.

[0003] The powder-spreading additive manufacturing substrate is redesigned. For example, the traditional substrate is remodeled and divided into a first substrate (molding chamber connection part) and a second substrate (additive manufacturing area). Each time printing is performed, only the second substrate is disassembled, replaced and leveled. This greatly improves the convenience of disassembly and assembly of the substrate and reduces the cost of use. However, these improvements still cannot solve the problem of correction and leveling caused by multiple installation / disassembly of the substrate and complete coverage of the formed components by the powder bed during multiple composite processes of powder-spreading additive manufacturing and other processes. Therefore, in order to realize powder-spreading composite additive manufacturing, a new type of substrate must be developed for composite additive manufacturing technology based on powder-spreading. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, the present invention proposes an application method of a detachable modular additive manufacturing substrate. Through the free coordination between the additive manufacturing substrates, various additive manufacturing substrates can be combined into a complete composite substrate, and the composite substrate can be freely adjusted in vertical height and flexibly designed in horizontal direction, which effectively solves the problem of multiple composites of metal additive manufacturing and other manufacturing / processing / heat treatment / monitoring processes caused by the large size, heavy weight, height adjustment, and difficult disassembly-reinstallation of the substrates used in traditional additive manufacturing, and helps to realize metal composite additive manufacturing and additive manufacturing online monitoring process, and improve the efficiency of metal composite additive manufacturing.

[0005] The present invention proposes an application method of a detachable modular additive manufacturing substrate, comprising: determining a plurality of additive manufacturing substrates according to a first target requirement, and splicing the plurality of additive manufacturing substrates into a first composite substrate according to the first target requirement; implementing an additive manufacturing process in a preset area of ​​the first composite substrate to obtain a first manufactured part; wherein the first manufactured part includes a first composite substrate and a first additive manufacturing part formed on the first composite substrate, and the first manufactured part is an integrated structure of the first composite substrate and the first additive manufacturing part; splitting each first manufactured part according to the detachable characteristics of the additive manufacturing substrate to obtain a plurality of separated first manufactured parts, implementing a non-additive manufacturing process on the separated first manufactured parts to obtain a plurality of intermediate manufactured parts, and assembling the plurality of intermediate manufactured parts based on the splicable characteristics of the additive manufacturing substrate and the second target requirement, and assembling other additive manufacturing substrates on the intermediate manufactured parts for leveling to obtain a second manufactured part; wherein the number of additive manufacturing substrates required for the second target requirement is different from the number of additive manufacturing substrates required for the first target requirement; implementing an additive manufacturing process on the second manufactured part to obtain the target manufactured part.

[0006] In addition, the application method of the detachable modular additive manufacturing substrate according to the above embodiment of the present invention may also have the following additional technical features:

[0007] According to some embodiments of the present invention, a plurality of additive manufacturing substrates are spliced ​​into a first composite substrate according to a first target requirement, including: matching a first tenon structure of an additive manufacturing substrate with a first tenon-groove structure of other additive manufacturing substrates in a first direction to obtain a first composite substrate; wherein the first direction is parallel to an operating table where the additive manufacturing process is performed.

[0008] According to some embodiments of the present invention, other additive manufacturing substrates are assembled on an intermediate manufactured part for leveling to obtain a second manufactured part, including: matching the first tenon structure of the additive manufacturing substrate of the intermediate manufactured part with the first tenon and groove structures of the other additive manufacturing substrates in a first direction, and matching the second tenon structure of the additive manufacturing substrate of the intermediate manufactured part with the second tenon and groove structures of the other additive manufacturing substrates in a second direction to obtain the second manufactured part; wherein the second direction is perpendicular to the operating table where the additive manufacturing process is performed.

[0009] According to some embodiments of the present invention, the method further comprises: adjusting the number and size of other additive manufacturing substrates according to the size difference of all intermediate manufactured parts in the horizontal direction and the vertical direction, so that all second manufactured parts after the leveling process are in the same horizontal plane.

[0010] According to the application method of the detachable modular additive manufacturing substrate of an embodiment of the present invention, a plurality of additive manufacturing substrates are determined according to a first target requirement, and the plurality of additive manufacturing substrates are spliced ​​into a first composite substrate according to the first target requirement; an additive manufacturing process is performed in a preset area of ​​the first composite substrate to obtain a first manufactured part; wherein the first manufactured part includes a first composite substrate and a first additive manufacturing part formed on the first composite substrate, and the first manufactured part is an integrated structure of the first composite substrate and the first additive manufacturing part; each first manufactured part is split according to the detachable characteristics of the additive manufacturing substrate to obtain a plurality of separated first manufactured parts, a non-additive manufacturing process is performed on the separated first manufactured parts to obtain a plurality of intermediate manufactured parts, and based on the splicable characteristics of the additive manufacturing substrate and the second target requirement, the plurality of intermediate manufactured parts are assembled, and other additive manufacturing substrates are assembled on the intermediate manufactured parts for leveling processing to obtain a second manufactured part; wherein the number of additive manufacturing substrates required for the second target requirement is different from the number of additive manufacturing substrates required for the first target requirement; an additive manufacturing process is performed on the second manufactured part to obtain the target manufactured part. Therefore, the method can combine various additive manufacturing substrates into a complete composite substrate through the free coordination between additive manufacturing substrates, and can realize free adjustment of the composite substrate in the vertical height and flexible design in the horizontal direction, effectively solving the problem of multiple combinations of metal additive manufacturing and other manufacturing / processing / heat treatment / monitoring processes caused by the large size, heavy weight, inability to adjust the height, and difficult disassembly-reinstallation of substrates used in traditional additive manufacturing, and helps to realize metal composite additive manufacturing and additive manufacturing online monitoring process, and improve the efficiency of metal composite additive manufacturing.

[0011] The present invention also proposes a detachable modular additive manufacturing substrate. Through the free coordination between the additive manufacturing substrates, various additive manufacturing substrates can be combined into a complete composite substrate, and the composite substrate can be freely adjusted in vertical height and flexibly designed in horizontal direction. This effectively solves the problem of multiple combinations of metal additive manufacturing and other manufacturing / processing / heat treatment / monitoring processes caused by the large size, heavy weight, inability to adjust height, and difficult disassembly and reinstallation of substrates used in traditional additive manufacturing. This helps to realize metal composite additive manufacturing and additive manufacturing online monitoring processes, and improve the efficiency of metal composite additive manufacturing.

[0012] The present invention also proposes a detachable modular additive manufacturing substrate, comprising: the additive manufacturing substrate is provided with a first tenon structure and a first tenon groove structure, the first tenon structure of the additive manufacturing substrate and the first tenon groove structures of other additive manufacturing substrates cooperate with each other in a first direction to connect the additive manufacturing substrate and the other additive manufacturing substrates.

[0013] According to some embodiments of the present invention, the additive manufacturing substrate is also provided with a second tenon structure and a second tenon groove structure, and the second tenon structure of the additive manufacturing substrate cooperates with the second tenon groove structures of other additive manufacturing substrates in the second direction to connect the additive manufacturing substrate with the other additive manufacturing substrates.

[0014] According to some embodiments of the present invention, the additive manufacturing substrate includes at least one of a sector shape, a circle, a triangle, a rectangle, or a trapezoid.

[0015] According to some embodiments of the present invention, the above-mentioned detachable modular additive manufacturing substrate also includes an auxiliary substrate, which is provided with a first auxiliary tenon structure and a first auxiliary tenon groove structure, and the first auxiliary tenon structure of the auxiliary substrate cooperates with the first auxiliary tenon groove structures of other auxiliary substrates in a first direction to connect the auxiliary substrate and the other auxiliary substrates, and the auxiliary substrate is also provided with a second auxiliary tenon structure and a second auxiliary tenon groove structure, and the second auxiliary tenon structure of the auxiliary substrate cooperates with the second auxiliary tenon groove structures of other auxiliary substrates in a second direction to connect the auxiliary substrate and the other auxiliary substrates; the additive manufacturing substrate is sleeved in the auxiliary substrate, and the additive manufacturing substrate and the auxiliary additive manufacturing substrate are detachably connected.

[0016] According to the detachable modular additive manufacturing substrate of the embodiment of the present invention, the additive manufacturing substrate is provided with a first tenon structure and a first tenon groove structure, and the first tenon structure of the additive manufacturing substrate cooperates with the first tenon groove structure of other additive manufacturing substrates in a first direction to connect the additive manufacturing substrate with other additive manufacturing substrates. Thus, through the free cooperation between additive manufacturing substrates, various additive manufacturing substrates can be combined into a complete composite substrate, and the composite substrate can be freely adjusted in vertical height and flexibly designed in horizontal direction, which effectively solves the problem of multiple composites of metal additive manufacturing and other manufacturing / processing / heat treatment / monitoring processes caused by the large size, heavy weight, height adjustment, and difficult disassembly-reinstallation of the substrates used in traditional additive manufacturing, and helps to realize metal composite additive manufacturing and additive manufacturing online monitoring process, and improve the efficiency of metal composite additive manufacturing.

[0017] In order to achieve the above-mentioned purpose, the present invention also proposes a target manufacturing part, which is obtained by applying the above-mentioned detachable modular additive manufacturing substrate.

[0018] According to the target manufacturing part of the embodiment of the present invention, the application method of the detachable modular additive manufacturing substrate can be obtained. Through the free coordination between the additive manufacturing substrates, various additive manufacturing substrates can be combined into a complete composite substrate, and the composite substrate can be freely adjusted in the vertical height and flexibly designed in the horizontal direction. This effectively solves the problem of multiple combinations of metal additive manufacturing and other manufacturing / processing / heat treatment / monitoring processes caused by the large size, heavy weight, inability to adjust the height, and difficult disassembly and reinstallation of the substrates used in traditional additive manufacturing. This helps to realize metal composite additive manufacturing and additive manufacturing online monitoring processes, and improve the efficiency of metal composite additive manufacturing.

[0019] The present invention also provides an additive manufacturing device, comprising the above-mentioned detachable modular additive manufacturing substrate.

[0020] According to the additive manufacturing device of the embodiment of the present invention, through the above-mentioned detachable modular additive manufacturing substrate, through the free coordination between the additive manufacturing substrates, various types of additive manufacturing substrates can be combined into a complete composite substrate, and the composite substrate can be freely adjusted in the vertical height and flexibly designed in the horizontal direction, which effectively solves the problem of multiple combinations of metal additive manufacturing and other manufacturing / processing / heat treatment / monitoring processes caused by the large size, heavy weight, inability to adjust the height, and difficult disassembly and reinstallation of the substrates used in traditional additive manufacturing, and helps to realize metal composite additive manufacturing and additive manufacturing online monitoring process, thereby improving the efficiency of metal composite additive manufacturing.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A flowchart of a method for applying a detachable modular additive manufacturing substrate according to some embodiments of the present invention;

[0023] Figure 2 is a schematic diagram of a square additive manufacturing substrate according to some embodiments of the present invention;

[0024] Figure 3 A schematic diagram of splicing into a first composite substrate according to some embodiments of the present invention;

[0025] Figure 4 A schematic diagram of obtaining a first manufactured part according to some embodiments of the present invention;

[0026] Figure 5 A schematic diagram of obtaining a target manufactured part according to some embodiments of the present invention;

[0027] Figure 6 Schematic diagram of a first composite substrate according to some other embodiments of the present invention;

[0028] Figure 7 A schematic diagram of a square additive manufacturing substrate with different types of vertically spliced ​​modules according to some embodiments of the present invention;

[0029] Figure 8 Schematic diagram of a fan-shaped, rectangular, triangular and trapezoidal additive manufacturing substrate according to some embodiments of the present invention;

[0030] Fig. 9 Schematic diagram of C-type and I-type additive manufacturing substrates according to some embodiments of the present invention;

[0031] Fig.10 is a schematic diagram of a composite substrate composed of additively manufactured substrates of multiple different types of horizontally spliced ​​modules according to some embodiments of the present invention;

[0032] Fig.11 A schematic diagram of a composite substrate composed of additively manufactured substrates of multiple shapes and sizes according to some embodiments of the present invention;

[0033] Fig.12 Schematic diagram of an additive manufacturing apparatus according to some embodiments of the present invention.

[0034] Description of reference numerals:

[0035] 1-a first tenon structure, 2-an additive manufacturing module of an additive manufacturing substrate, 3-a first tenon groove structure, 4-a second tenon groove structure, 5-a second tenon structure and 6-a target manufacturing part. DETAILED DESCRIPTION

[0036] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0037] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the embodiments of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0038] The core of additive manufacturing technology is to construct a three-dimensional entity by stacking powder or wire layer by layer, which provides the possibility for the rapid manufacture of complex metal parts, and thus shows great application potential in aerospace, biomedicine and other fields. At the same time, additive manufacturing technology can not only produce complex part structures with high precision and efficiency, but also has the potential to improve product performance and quality. However, metallurgical defects (pores, inclusions, unfused, residual stress, cracks, etc.) are prone to occur in parts produced by additive manufacturing, which seriously affects the performance of the parts, thereby reducing the fatigue life of additive manufacturing parts, making it difficult to meet the demanding performance requirements of aerospace, biomedicine and other applications.

[0039] Therefore, the combination of additive manufacturing and other manufacturing / processing / heat treatment / monitoring processes has become a current development trend. For example, composite additive manufacturing based on machining can effectively utilize the freedom of additive manufacturing to construct parts of complex shapes, while improving the accuracy and surface finish of parts through machining and reducing post-processing steps. In addition, the more widely used composite manufacturing technologies include composite additive manufacturing based on laser assistance, composite additive manufacturing based on rolling, and composite additive manufacturing based on shot peening. These composite manufacturing technologies combine the advantages of traditional manufacturing processes in performance regulation and dimensional accuracy. They can not only provide new solutions for suppressing metallurgical defects caused by additive manufacturing, but also are expected to reconstruct the residual stress distribution of additive manufacturing components and improve the mechanical properties and fatigue life of parts.

[0040] As mentioned in the background technology section, in traditional additive manufacturing technology, the fixed substrate used is large in size, heavy in weight, and difficult to install / disassemble, which makes it extremely difficult to combine additive manufacturing with other processes multiple times. Especially for the powder-laying additive manufacturing process in which the powder bed completely covers the entire molding cavity corresponding to the height of the forming component, its composite additive manufacturing technology needs to complete multiple cycles of the process of "additive-other process-additive-other process", involving multiple installation and disassembly and correction and leveling of the substrate between multiple process equipment. Therefore, the composite manufacturing processes currently developed are all based on powder-feeding / wire-feeding metal additive manufacturing processes that do not require leveling of the substrate and powder bed coverage. At the same time, the substrate of traditional powder-feeding additive manufacturing has been modified and designed. According to the shape of the manufactured parts, the additive manufacturing substrate is flexibly designed using a mortise and tenon structure, which not only reduces the use cost and manufacturing cycle of large-format powder-feeding additive manufacturing substrates, but also further improves the feasibility of powder-feeding composite additive manufacturing.

[0041] In the process of realizing the present invention, the applicant discovered that the powder-spreading additive manufacturing substrate can be redesigned. For example, the traditional substrate can be modified and partitioned into a first substrate (molding chamber connection part) and a second substrate (additive manufacturing area). Each time printing is performed, only the second substrate needs to be disassembled, replaced and leveled. This greatly improves the convenience of disassembly and assembly of the substrate and reduces the cost of use.

[0042] However, these improvements still cannot solve the problem of leveling correction and complete coverage of the formed components by the powder bed caused by multiple installation / disassembly of the substrate during the multiple composite processes of powder-spreading additive manufacturing and other processes. Therefore, in order to realize powder-spreading composite additive manufacturing, a new type of substrate must be developed for powder-spreading composite additive manufacturing technology.

[0043] The following describes an application method of a detachable modular additive manufacturing substrate, a detachable modular additive manufacturing substrate, a target manufacturing part, and an additive manufacturing device according to an embodiment of the present invention with reference to the accompanying drawings.

[0044] refer to Figure 1 , which is a flow chart of a method for applying a detachable modular additive manufacturing substrate according to some embodiments of the present invention.

[0045] like Figure 1 As shown, the application method of the detachable modular additive manufacturing substrate according to the embodiment of the present invention may include the following steps:

[0046] S101, determining a plurality of additive manufacturing substrates according to a first target requirement, and splicing the plurality of additive manufacturing substrates into a first composite substrate according to the first target requirement.

[0047] Specifically, the shape, size and quantity of the additive manufacturing substrate are determined according to the first target requirement (such as the shape and size of the required composite substrate), wherein the first target requirement may be the application requirement and the layout requirement of additive manufacturing, and the number of additive manufacturing substrates may be several. Then, the several additive manufacturing substrates are spliced ​​into a first composite substrate according to the corresponding layout requirements, and the first composite substrate may be a single-layer structure.

[0048] S102, performing an additive manufacturing process on a preset area of ​​the first composite substrate to obtain a first manufactured part; wherein the first manufactured part includes the first composite substrate and a first additively manufactured part formed on the first composite substrate, and the first manufactured part is an integrated structure of the first composite substrate and the first additively manufactured part.

[0049] Specifically, after being spliced ​​into a first composite substrate, the first composite substrate is installed in a metal additive manufacturing device, and an additive manufacturing process is implemented in a preset area of ​​the first composite substrate. After the additive manufacturing process is implemented, a first manufactured part can be obtained. The first additive manufactured part can be obtained in the preset area of ​​the first composite substrate. The first manufactured part includes a first composite substrate and a first additive manufactured part formed on the first composite substrate. The first manufactured part is an integrated structure of the first composite substrate and the first additive manufactured part, wherein the height of each first additive manufactured part on the first composite substrate is the same.

[0050] Among them, additive manufacturing technology, also known as 3D printing technology, is a process of manufacturing three-dimensional objects by stacking materials layer by layer. This technology has a wide range of applications in many fields, including aerospace, medical, and automobile manufacturing. In the additive manufacturing process, the substrate is the base plate to which the workpiece is attached, and its surface accuracy directly affects the quality of the printed workpiece. The substrate plays an important role in additive manufacturing. It needs to have a certain degree of flatness and parallelism to ensure that the printed material can be laid evenly. In the traditional additive manufacturing process, the separation and reuse of the substrate is a technical challenge. For example, in the traditional metal 3D printing process, the workpiece needs to be separated from the substrate after printing is completed, which usually involves complex post-processing steps such as wire cutting or machining, which are not only time-consuming but may also affect the accuracy and quality of the workpiece.

[0051] S103, splitting each first manufactured part according to the detachable characteristic of the additive manufacturing substrate to obtain a plurality of separated first manufactured parts, performing a non-additive manufacturing process on the separated first manufactured parts to obtain a plurality of intermediate manufactured parts, and assembling the plurality of intermediate manufactured parts and assembling other additive manufacturing substrates on the intermediate manufactured parts for leveling based on the splicable characteristic of the additive manufacturing substrate and the second target requirement to obtain a second manufactured part; wherein the number of additive manufacturing substrates required for the second target requirement is different from the number of additive manufacturing substrates required for the first target requirement.

[0052] Specifically, after obtaining a number of first manufactured parts, the first manufactured parts are split according to the detachable characteristics of the additive manufacturing substrate to obtain a number of separated first manufactured parts. The separated first manufactured parts are subjected to non-additive manufacturing processes according to application requirements to obtain a number of intermediate manufactured parts. Based on the splicable characteristics of the additive manufacturing substrate and the second target requirements, the intermediate manufactured parts are assembled and other additive manufacturing substrates are assembled on the intermediate manufactured parts for leveling to obtain a second manufactured part. The second manufactured part can be a multilayer structure (i.e., at least two additive manufacturing substrates are stacked together), wherein the number of additive manufacturing substrates required for the second target requirement is different from the number of additive manufacturing substrates required for the first target requirement. The non-additive manufacturing process can be other manufacturing / processing / heat treatment / monitoring processes. After the non-additive manufacturing process is implemented on the first manufactured part, the second manufactured part can be obtained. The shape and size of the corresponding printed part substrate are adjusted according to the requirements of the additive manufacturing task, which effectively reduces the difficulty of installation and disassembly of the metal substrate, improves the efficiency of post-processing of in-situ composite additive manufacturing, increases the designability of the substrate, and reduces the cost of using the substrate.

[0053] S104, performing an additive manufacturing process on the second manufactured part to obtain a target manufactured part.

[0054] Specifically, after obtaining the intermediate manufactured part, the number and size of the additive manufacturing substrates are adjusted according to the size difference of the intermediate manufactured parts in the horizontal and vertical directions, so that the second manufactured part after assembly is in the same horizontal plane. Then, the second manufactured part is installed in the metal additive manufacturing equipment again, the additive manufacturing process is implemented based on the second manufactured part after leveling, and the above steps after the implementation of the additive manufacturing process are repeated until the target manufactured part is obtained. Therefore, through the free coordination between the additive manufacturing substrates, various additive manufacturing substrates can be combined into a complete composite substrate, and the composite substrate can be freely adjusted in the vertical height and flexibly designed in the horizontal direction, which effectively solves the problem of multiple composites of metal additive manufacturing and other manufacturing / processing / heat treatment / monitoring processes caused by the large size, heavy weight, height adjustment, and difficult disassembly-reinstallation of the substrates used in traditional additive manufacturing, and helps to realize metal composite additive manufacturing and additive manufacturing online monitoring process, and improve the efficiency of metal composite additive manufacturing.

[0055] As a specific embodiment, refer to Figure 2 , is a schematic diagram of a square additive manufacturing substrate according to some embodiments of the present invention. According to the first target requirement, 16 pieces of 20×20×2 mm in size are selected. 3 The square base substrate is assembled with concave and convex grooves in the horizontal direction and four corner buckles in the vertical direction to ensure the horizontal surface of the substrate. Figure 3 , is a schematic diagram of splicing a first composite substrate according to some embodiments of the present invention, wherein the square base substrates are spliced ​​into the first composite substrate according to the corresponding layout requirements and installed in the laser selective melting forming equipment. Figure 4 , which is a schematic diagram of obtaining a first manufactured part according to some embodiments of the present invention, wherein the laser selective melting is used to form the laser selective melting manufactured parts with heights of 2 mm, 4 mm, 6 mm, and 8 mm, respectively. The first composite substrate is disassembled from the laser selective melting forming equipment into various basic substrates, and the manufactured parts on the various basic substrates are subjected to laser shock peening treatment with different parameters according to application requirements. Reference Figure 5 , is a schematic diagram of obtaining a target manufactured part according to some embodiments of the present invention, wherein the number of base substrates after laser shock strengthening treatment is adjusted in the vertical direction, that is, 3, 2, 1, and 0 base substrates are added to the manufactured parts with heights of 2 mm, 4 mm, 6 mm, and 8 mm, respectively, so that the manufactured parts on all base substrates are on the same horizontal plane after being spliced ​​and assembled in the horizontal direction. The assembled second manufactured part is reinstalled in the laser selective melting forming equipment, and the laser selective melting forming task is performed again, and the above steps are repeated until the target manufactured part is obtained.

[0056] As a specific embodiment, according to the requirements of the electron beam melting forming task, 4 small rectangular base substrates, 8 small square base substrates, 1 medium square base substrate, and 1 C-shaped base substrate are selected. The selected base substrates of each type are spliced ​​into the following according to the corresponding printing layout: Figure 6 The first composite substrate shown is installed in an electron beam melting forming device, and a manufactured part with the same height is formed by electron beam melting. The first composite substrate is disassembled from the electron beam melting forming device into various basic substrates, and the manufactured parts on various basic substrates are subjected to residual stress detection, vacuum carburizing and shot peening treatment with different parameters according to application requirements. Since the height of the entities formed by electron beam melting is the same, there is no need to adjust the number of basic substrates in the vertical direction. The basic substrates are directly combined into the second manufactured part, reinstalled in the electron beam melting forming device, and electron beam melting forming is performed again. Repeat the above steps until the target manufactured part is obtained.

[0057] Among them, residual stress refers to the stress existing inside the material without the action of external load. This stress is usually caused by the manufacturing process (such as heat treatment, welding, machining, etc.) or the inhomogeneous properties of the material (such as phase change, plastic deformation, etc.). The existence of residual stress may affect the properties of the material, such as strength, toughness, dimensional stability, etc., and may even cause the generation and expansion of cracks. Therefore, the detection and control of residual stress is very important in many engineering applications. Vacuum carburizing is a heat treatment process that involves infiltrating carbon atoms into the metal surface in a vacuum environment to improve the surface hardness and wear resistance of the material. This process is often used to improve the performance of tools, molds and mechanical parts. Shot peening is a technology that forms a strengthening layer of a certain thickness by spraying a high-speed projectile stream onto the surface of the part to cause plastic deformation of the surface layer. This technology can significantly improve the fatigue strength and service life of the parts, and improve the wear resistance and surface roughness of mechanical parts. Shot peening is widely used in many fields, especially in aerospace, automobile manufacturing and mechanical parts.

[0058] In some embodiments of the present invention, a plurality of additive manufacturing substrates are spliced ​​into a first composite substrate according to a first target requirement, including: matching a first tenon structure of an additive manufacturing substrate with a first tenon structure of other additive manufacturing substrates in a first direction to obtain a first composite substrate; wherein the first direction is parallel to an operating table on which the additive manufacturing process is implemented.

[0059] Specifically, each additive manufacturing substrate includes a first tenon structure and a first tenon groove structure, and the first tenon structure of the additive manufacturing substrate and the first tenon groove structure of other additive manufacturing substrates are matched with each other in a first direction (horizontal direction) to connect the additive manufacturing substrate and the other additive manufacturing substrates to obtain a first composite substrate. The first direction is parallel to the operating table where the additive manufacturing process is performed.

[0060] In some embodiments of the present invention, other additive manufacturing substrates are assembled on an intermediate manufactured part for leveling to obtain a second manufactured part, including: matching the first tenon structure of the additive manufacturing substrate of the intermediate manufactured part with the first tenon and groove structures of the other additive manufacturing substrates in a first direction, and matching the second tenon structure of the additive manufacturing substrate of the intermediate manufactured part with the second tenon and groove structures of the other additive manufacturing substrates in a second direction to obtain the second manufactured part; wherein the second direction is perpendicular to the operating table where the additive manufacturing process is implemented.

[0061] Specifically, since the first composite substrate is formed by splicing a plurality of additive manufacturing substrates, the first composite substrate can be split into a plurality of additive manufacturing substrates, and then the plurality of additive manufacturing substrates are reassembled, that is, the first tenon structure of the additive manufacturing substrate of the intermediate manufactured part and the first tenon-groove structure of the other additive manufacturing substrates are matched with each other in the first direction (horizontal direction), each additive manufacturing substrate includes a second tenon structure and a second tenon-groove structure, and the second tenon structure of the additive manufacturing substrate of the intermediate manufactured part and the second tenon-groove structure of the other additive manufacturing substrates are matched with each other in the second direction (vertical direction) to connect the additive manufacturing substrate and the other additive manufacturing substrates, and obtain the second manufactured part. The second direction is perpendicular to the operating table where the additive manufacturing process is implemented.

[0062] In some embodiments of the present invention, the method further includes: adjusting the number and size of other additive manufacturing substrates according to the size difference of all intermediate manufactured parts in the horizontal direction and the vertical direction, so that the intermediate manufactured parts on all the second manufactured parts after the leveling process are in the same horizontal plane.

[0063] Specifically, after obtaining the second manufactured part, the number and size of other additive manufacturing substrates are adjusted according to the size differences of all intermediate manufactured parts in the horizontal direction (first direction) and the vertical direction (second direction), so that all intermediate manufactured parts on the second manufactured part after the leveling process are on the same horizontal plane. The height of the second manufactured part is adjusted by freely combining the additive manufacturing substrates, realizing the in-situ "additive-other processes-additive-other processes" cycle.

[0064] In summary, according to the application method of the detachable modular additive manufacturing substrate of an embodiment of the present invention, a plurality of additive manufacturing substrates are determined according to a first target requirement, and the plurality of additive manufacturing substrates are spliced ​​into a first composite substrate according to the first target requirement; an additive manufacturing process is performed in a preset area of ​​the first composite substrate to obtain a first manufactured part; wherein the first manufactured part includes a first composite substrate and a first additive manufacturing part formed on the first composite substrate, and the first manufactured part is an integrated structure of the first composite substrate and the first additive manufacturing part; each first manufactured part is split according to the detachable characteristics of the additive manufacturing substrate to obtain a plurality of separated first manufactured parts, a non-additive manufacturing process is performed on the separated first manufactured parts to obtain a plurality of intermediate manufactured parts, and based on the splicable characteristics of the additive manufacturing substrate and the second target requirement, the plurality of intermediate manufactured parts are assembled, and other additive manufacturing substrates are assembled on the intermediate manufactured parts for leveling processing to obtain a second manufactured part; wherein the number of additive manufacturing substrates required for the second target requirement is different from the number of additive manufacturing substrates required for the first target requirement; an additive manufacturing process is performed on the second manufactured part to obtain the target manufactured part. Therefore, the method can combine various additive manufacturing substrates into a complete composite substrate through the free coordination between additive manufacturing substrates, and can realize free adjustment of the composite substrate in the vertical height and flexible design in the horizontal direction, effectively solving the problem of multiple combinations of metal additive manufacturing and other manufacturing / processing / heat treatment / monitoring processes caused by the large size, heavy weight, inability to adjust the height, and difficult disassembly-reinstallation of substrates used in traditional additive manufacturing, and helps to realize metal composite additive manufacturing and additive manufacturing online monitoring process, and improve the efficiency of metal composite additive manufacturing.

[0065] It should be noted that some embodiments of the present invention are described above. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0066] Corresponding to the above-mentioned embodiment, the present invention also proposes a detachable modular additive manufacturing substrate.

[0067] The modular additive manufacturing substrate is provided with a first tenon structure 1 and a first tenon groove structure 3, wherein the number of the first tenon structure 1 and the first tenon groove structure 3 can be respectively set to multiple according to the length of the additive manufacturing substrate. The first tenon structure 1 of the additive manufacturing substrate and the first tenon groove structures 3 of other additive manufacturing substrates cooperate with each other in the first direction to connect the additive manufacturing substrate and other additive manufacturing substrates, and obtain a first composite substrate. The horizontal extension and expansion of the additive manufacturing substrate is achieved through the clearance cooperation of various mortise and tenon structures.

[0068] The modular additive manufacturing substrate is also provided with a second tenon structure 5 and a second tenon-groove structure 4, wherein the number of the second tenon structure 5 and the second tenon-groove structure 4 can be respectively set to a plurality according to the length of the additive manufacturing substrate. The second tenon structure 5 of the additive manufacturing substrate and the second tenon-groove structures 4 of other additive manufacturing substrates cooperate with each other in the second direction to connect the additive manufacturing substrate and the other additive manufacturing substrates to obtain a second composite substrate. The height of the second composite substrate can be adjusted by adjusting the number of additive manufacturing substrates in the vertical direction.

[0069] refer to Figure 7 , is a schematic diagram of a square additive manufacturing substrate with different types of vertical splicing modules according to some embodiments of the present invention, wherein the first tenon structure 1, the first tenon groove structure 3, the second tenon structure 5 and the second tenon groove structure 4 may be fan-shaped, circular, triangular, semicircular, rectangular, or irregular, or may be a combination of tenon structures and tenon groove structures of various shapes. In addition, the height of the substrate may be adjusted by means of threaded holes, screws, countersunk holes or latches.

[0070] refer to Figure 8 , is a schematic diagram of a fan-shaped, rectangular, triangular and trapezoidal additive manufacturing substrate according to some embodiments of the present invention, the additive manufacturing substrate includes at least one of a square, a fan-shaped, a circle, a triangle, a rectangle or a trapezoid, Figure 8 (a) is fan-shaped, Figure 8 (b) is a rectangle, Figure 8 (c) is a triangle, Figure 8 (d) is a trapezoid. The size of the additive manufacturing substrate can be designed to be at least one of small, medium or large, wherein the size of the small additive manufacturing substrate is a×a×h mm 3 , the medium-sized additive manufacturing substrate size is 2a×2a×2h mm 3 , large additive manufacturing substrate size is 4a×4a×4hmm 3 .

[0071] refer to Fig. 9, which is a schematic diagram of a C-shaped and I-shaped additive manufacturing substrate according to some embodiments of the present invention, a special-shaped additive manufacturing substrate can be designed according to the shapes of different parts. For example, the special-shaped additive manufacturing substrate can be a C-shaped additive manufacturing substrate, an I-shaped additive manufacturing substrate, an S-shaped additive manufacturing substrate, a "mountain"-shaped additive manufacturing substrate, and other special-shaped substrates. Fig. 9 (a) is a C-type additive manufacturing substrate. Fig. 9 (b) is the additive manufacturing substrate.

[0072] refer to Fig.10 (a)-(f) are schematic diagrams of composite substrates composed of additive manufacturing substrates of multiple different types of horizontally spliced ​​modules according to some embodiments of the present invention. The composite substrate can be assembled by combining any blocks of additive manufacturing substrates of different shapes and sizes, or can be assembled by combining any blocks of additive manufacturing substrates of the same shape and size (see Fig.11 ).

[0073] The detachable modular additive manufacturing substrate also includes an auxiliary substrate, the shape of which can be at least one of a square, a sector, a circle, a triangle, a rectangle or a trapezoid. The auxiliary substrate is provided with a first auxiliary tenon structure and a first auxiliary tenon groove structure. The first auxiliary tenon structure of the auxiliary substrate cooperates with the first auxiliary tenon groove structures of other auxiliary substrates in a first direction to connect the auxiliary substrate and the other auxiliary substrates. The auxiliary substrate is also provided with a second auxiliary tenon structure and a second auxiliary tenon groove structure. The second auxiliary tenon structure of the auxiliary substrate cooperates with the second auxiliary tenon groove structures of other auxiliary substrates in a second direction to connect the auxiliary substrate and the other auxiliary substrates. The additive manufacturing substrate is sleeved in the auxiliary substrate, and the additive manufacturing substrate and the auxiliary additive manufacturing substrate are detachably connected so that additive manufacturing substrates of any shape can be applied.

[0074] The number of the first auxiliary tenon structure and the first auxiliary tenon groove structure can be set to multiple according to the length of the additive manufacturing substrate, and the number of the second auxiliary tenon structure and the second auxiliary tenon groove structure can be set to multiple according to the length of the additive manufacturing substrate. The first auxiliary tenon structure, the first auxiliary tenon groove structure, the second auxiliary tenon structure and the second auxiliary tenon groove structure can be fan-shaped, circular, triangular, semicircular, rectangular, special-shaped, etc., or a combination of auxiliary tenon structures and auxiliary tenon groove structures in various shapes.

[0075] When the number of additive manufacturing substrates is three and the shape of the additive manufacturing substrates is circular, an auxiliary substrate is needed. The shape of the auxiliary substrate can be triangular. The hollow area in the middle of the auxiliary substrate matches the three combined additive manufacturing substrates, and the additive manufacturing substrate is placed in the auxiliary substrate.

[0076] When the number of additive manufacturing substrates is one and the shape of the additive manufacturing substrate is circular, or when the number of additive manufacturing substrates is eight and the shape of the additive manufacturing substrate is fan-shaped, an auxiliary substrate is required. The shape of the auxiliary substrate can be square or rectangular. The hollow area in the middle of the auxiliary substrate matches the combined additive manufacturing substrate, and the additive manufacturing substrate is arranged in the auxiliary substrate.

[0077] As a specific embodiment, when the number of additive manufacturing substrates is 4 and the shape of the additive manufacturing substrates is circular, an auxiliary substrate is needed. The shape of the auxiliary substrate can be square or rectangular. Since the 4 additive manufacturing substrates are combined together, a diamond-shaped hollow area will appear in the middle, and the middle part of the auxiliary substrate is also a hollow area. Therefore, the additive manufacturing substrate is first placed in the auxiliary substrate, and then the hollow area where the additive manufacturing substrates are combined is filled with a diamond-shaped solid.

[0078] In summary, according to the detachable modular additive manufacturing substrate of the embodiment of the present invention, the additive manufacturing substrate is provided with a first tenon structure and a first tenon groove structure, and the first tenon structure of the additive manufacturing substrate and the first tenon groove structure of other additive manufacturing substrates cooperate with each other in the first direction to connect the additive manufacturing substrate and other additive manufacturing substrates. Therefore, through the free cooperation between additive manufacturing substrates, various additive manufacturing substrates can be combined into a complete composite substrate, and the composite substrate can be freely adjusted in the vertical height and flexibly designed in the horizontal direction, which effectively solves the problem of multiple composites of metal additive manufacturing and other manufacturing / processing / heat treatment / monitoring processes caused by the large size, heavy weight, height adjustment, and difficult disassembly-reinstallation of the substrates used in traditional additive manufacturing, and helps to realize metal composite additive manufacturing and additive manufacturing online monitoring process, and improve the efficiency of metal composite additive manufacturing.

[0079] An embodiment of the present invention provides a target manufacturing part, which is obtained by applying the above-mentioned detachable modular additive manufacturing substrate.

[0080] According to the target manufacturing part of the embodiment of the present invention, through the application method of the above-mentioned detachable modular additive manufacturing substrate, various types of additive manufacturing substrates can be combined into a complete composite substrate through the free coordination between the additive manufacturing substrates, and the composite substrate can be freely adjusted in the vertical height and flexibly designed in the horizontal direction, which effectively solves the problem of multiple combinations of metal additive manufacturing and other manufacturing / processing / heat treatment / monitoring processes caused by the large size, heavy weight, inability to adjust the height, and difficult disassembly-reinstallation of the substrates used in traditional additive manufacturing, and helps to realize metal composite additive manufacturing and additive manufacturing online monitoring process, and improve the efficiency of metal composite additive manufacturing.

[0081] like Fig.12 As shown, an embodiment of the present invention provides an additive manufacturing device 200 , including the above-mentioned detachable modular additive manufacturing substrate 100 .

[0082] According to the additive manufacturing device of the embodiment of the present invention, through the above-mentioned detachable modular additive manufacturing substrate, through the free coordination between the additive manufacturing substrates, various types of additive manufacturing substrates can be combined into a complete composite substrate, and the composite substrate can be freely adjusted in the vertical height and flexibly designed in the horizontal direction, which effectively solves the problem of multiple combinations of metal additive manufacturing and other manufacturing / processing / heat treatment / monitoring processes caused by the large size, heavy weight, inability to adjust the height, and difficult disassembly and reinstallation of the substrates used in traditional additive manufacturing, and helps to realize metal composite additive manufacturing and additive manufacturing online monitoring process, thereby improving the efficiency of metal composite additive manufacturing.

[0083] In addition, although the operations of the method of the present invention are described in a specific order in the accompanying drawings, this does not require or imply that the operations must be performed in this specific order, or that all the operations shown must be performed to achieve the desired results. On the contrary, the steps depicted in the flow chart can be performed in a different order. Additionally or alternatively, some steps can be omitted, multiple steps can be combined into one step, and / or one step can be decomposed into multiple steps.

[0084] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the embodiments of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0085] Although the spirit and principle of the present invention have been described with reference to several specific embodiments, it should be understood that the present invention is not limited to the disclosed specific embodiments, and the division of various aspects does not mean that the features in these aspects cannot be combined to benefit, and this division is only for the convenience of expression. The present invention is intended to cover various modifications and equivalent arrangements included in the spirit and scope of the attached claims. The scope of the attached claims conforms to the broadest interpretation, thereby including all such modifications and equivalent structures and functions.

Claims

1. A method for applying a detachable modular additive manufacturing substrate, characterized in that: include: Determining a plurality of additive manufacturing substrates according to a first target requirement, and splicing the plurality of additive manufacturing substrates into a first composite substrate according to the first target requirement; Implementing an additive manufacturing process in a preset area of ​​the first composite substrate to obtain a first manufactured part; wherein the first manufactured part includes the first composite substrate and a first additive manufactured part formed on the first composite substrate, and the first manufactured part is an integrated structure of the first composite substrate and the first additive manufactured part; According to the detachable characteristic of the additive manufacturing substrate, each of the first manufactured parts is split to obtain a plurality of separated first manufactured parts, a non-additive manufacturing process is performed on the separated first manufactured parts to obtain a plurality of intermediate manufactured parts, and based on the splicable characteristic of the additive manufacturing substrate and the second target requirement, the plurality of intermediate manufactured parts are assembled and other additive manufacturing substrates are assembled on the intermediate manufactured parts for leveling to obtain a second manufactured part; wherein the number of the additive manufacturing substrates required for the second target requirement is different from the number of the additive manufacturing substrates required for the first target requirement; An additive manufacturing process is performed on the second manufactured part to obtain a target manufactured part.

2. The method for applying a detachable modular additive manufacturing substrate according to claim 1, characterized in that: The step of splicing the plurality of additively manufactured substrates into a first composite substrate according to the first target requirement includes: The first tenon structure of the additive manufacturing substrate and the first tenon-groove structures of other additive manufacturing substrates are matched with each other in a first direction to obtain the first composite substrate; wherein the first direction is parallel to the operating table where the additive manufacturing process is implemented.

3. The method for applying a detachable modular additive manufacturing substrate according to claim 2, characterized in that: The step of assembling other additive manufacturing substrates on the intermediate manufactured part for leveling to obtain a second manufactured part comprises: The first tenon structure of the additive manufacturing substrate of the intermediate manufactured part and the first tenon groove structure of the other additive manufacturing substrates are matched with each other in a first direction, and the second tenon structure of the additive manufacturing substrate of the intermediate manufactured part and the second tenon groove structure of the other additive manufacturing substrates are matched with each other in a second direction to obtain the second manufactured part; wherein the second direction is perpendicular to the operating table where the additive manufacturing process is implemented.

4. The method for applying a detachable modular additive manufacturing substrate according to claim 3, characterized in that: The method further comprises: According to the size differences of all the intermediate manufactured parts in the horizontal direction and the vertical direction, the number and size of the other additive manufacturing substrates are adjusted so that all the second manufactured parts after the leveling process are in the same horizontal plane.

5. A detachable modular additive manufacturing substrate, characterized in that: include: The additive manufacturing substrate is provided with a first tenon structure (1) and a first tenon groove structure (3); the first tenon structure (1) of the additive manufacturing substrate and the first tenon groove structure (3) of the other additive manufacturing substrate cooperate with each other in a first direction to connect the additive manufacturing substrate with the other additive manufacturing substrate.

6. The detachable modular additive manufacturing substrate according to claim 5, characterized in that: The additive manufacturing substrate is also provided with a second tenon structure (5) and a second tenon groove structure (4); the second tenon structure (5) of the additive manufacturing substrate cooperates with the second tenon groove structure (4) of the other additive manufacturing substrate in a second direction to connect the additive manufacturing substrate with the other additive manufacturing substrate.

7. The detachable modular additive manufacturing substrate according to claim 5, characterized in that: The additive manufacturing substrate includes at least one of a sector shape, a circle, a triangle, a rectangle or a trapezoid.

8. The detachable modular additive manufacturing substrate according to claim 7, characterized in that: It also includes an auxiliary base plate, the auxiliary base plate is provided with a first auxiliary tenon structure and a first auxiliary tenon groove structure, the first auxiliary tenon structure of the auxiliary base plate cooperates with the first auxiliary tenon groove structures of other auxiliary base plates in a first direction to connect the auxiliary base plate with the other auxiliary base plates, the auxiliary base plate is also provided with a second auxiliary tenon structure and a second auxiliary tenon groove structure, the second auxiliary tenon structure of the auxiliary base plate cooperates with the second auxiliary tenon groove structures of other auxiliary base plates in a second direction to connect the auxiliary base plate with the other auxiliary base plates; The additive manufacturing substrate is sleeved in the auxiliary substrate, and the additive manufacturing substrate and the auxiliary additive manufacturing substrate are detachably connected.

9. A target manufactured part, characterized in that: Obtained by the application method of the detachable modular additive manufacturing substrate as described in any one of claim 14.

10. An additive manufacturing device, characterized in that: A detachable modular additive manufacturing substrate comprising any one of claims 5-9.

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