Hollow forming process control method and device based on metal 3D printing

Abstract

The embodiment of the invention provides a hollowed-out forming process control method and device based on metal 3D printing. The method comprises the steps that a to-be-printed sports equipment part three-dimensional model is determined; determining a part wall thickness value; taking the leftmost inner side surface of the part three-dimensional model as an initial position of lattice filling; taking an X direction from the central point position of the inner side surface to a coordinate system as a positive direction; setting the sizes of the filling lattices at different positions as second parameters; setting an external part wall thickness entity as a first filling process parameter; and setting an internal lattice as a second filling process parameter, setting a plurality of feature scanning parameters; detecting that the wall thickness value of the part is smaller than the lattice rod diameter; identifying the sports equipment part as a hollow structure, and performing hollow forming operation on the sports equipment part by adopting a hollow structure parameter control device; the hollow structure of the sports equipment product is integrally formed and printed, materials are greatly saved, and the manufacturing efficiency is improved; the hollow structure is integrally printed and formed, so that the characteristic that a traditional processing mode cannot be used for processing is avoided; and the machining process flow can be shortened, and the labor and production cost is reduced.

Description

Technical Field

[0001] The present invention relates to the field of computer technology, and in particular to a hollow forming process control method based on metal 3D printing, a hollow forming process control device based on metal 3D printing, a computer device and a computer-readable storage medium. Background Art

[0002] Metal 3D printing technology has been well developed and applied in many fields such as manufacturing, medical, aerospace and military, and has also been applied in sports equipment. At present, sports equipment is formed by 3D printing technology, which can form complex structures and has a short production cycle, but it does not have an advantage in cost. Summary of the invention

[0003] In view of the above problems, embodiments of the present invention are proposed to provide a hollow forming process control method based on metal 3D printing, a hollow forming process control device based on metal 3D printing, a computer device and a computer-readable storage medium that overcome the above problems or at least partially solve the above problems.

[0004] In order to solve the above problems, an embodiment of the present invention discloses a hollow forming process control method based on metal 3D printing, the method comprising:

[0005] Determine the three-dimensional model of the sports equipment parts to be printed;

[0006] Determine the wall thickness value of the part;

[0007] The leftmost inner side surface of the part 3D model is used as the starting position of the lattice filling: the X direction of the coordinate system from the center point of the inner side surface is the positive direction; the filling lattice size at different positions is set as the second parameter;

[0008] Setting an external part wall thickness entity as a first filling process parameter; and, setting an internal lattice as a second filling process parameter; and, setting a plurality of feature scanning parameters;

[0009] When it is detected that the wall thickness of the part is smaller than the lattice rod diameter, it is identified as a hollow structure, and the hollow structure parameter control equipment is used to perform the hollow forming operation of the sports equipment part.

[0010] Preferably, the lattice unit comprises a cross lattice or an inclined cross cross lattice; the initial unit size of the lattice is the length and width of the lattice; the length and width of the lattice are: 0-100mm.

[0011] Preferably, the characteristic scanning parameters include: scanning power, scanning speed, scanning spacing and scanning layer thickness.

[0012] Preferably, the method comprises:

[0013] Gradient filling is performed according to the function formula y=kx+b, where y is the size of a single unit cell of the lattice, k is a constant value not equal to 0, x is, b is the initial lattice unit size, and x is a positive integer.

[0014] Preferably, the method comprises:

[0015] The basic parameters are controlled and set to scan at a speed of 1000 mm / s, a power of 300 W, and a spacing of 0.1 mm. The hollow structure scanning speed is controlled and set to scan at a speed of 1200 mm / s, a power of 250 W, and a spacing of 0.1 mm. The support parameters are controlled and set to scan at a speed of 1600 mm / s and a power of 200 W.

[0016] The embodiment of the present invention discloses a hollow forming process control device based on metal 3D printing, the device comprising:

[0017] A first determination module is used to determine a three-dimensional model of a sports equipment part to be printed;

[0018] The second determination module is used to determine the wall thickness value of the part;

[0019] The first setting module is used to use the leftmost inner side surface of the part three-dimensional model as the starting position of the lattice filling: the X direction of the coordinate system from the center point of the inner side surface is the positive direction; and the filling lattice size at different positions is set as the second parameter;

[0020] A second setting module is used to set an external part wall thickness entity as a first filling process parameter; and to set an internal lattice as a second filling process parameter; and to set a plurality of feature scanning parameters;

[0021] The detection module is used to detect when the wall thickness of the part is less than the lattice rod diameter; identify it as a hollow structure, and use the hollow structure parameter control equipment to perform the hollow forming operation of the sports equipment part.

[0022] Preferably, the lattice unit comprises a cross lattice or an inclined cross cross lattice; the initial unit size of the lattice is the length and width of the lattice; the length and width of the lattice are: 0-100mm.

[0023] Preferably, the characteristic scanning parameters include: scanning power, scanning speed, scanning spacing and scanning layer thickness.

[0024] An embodiment of the present invention discloses a computer device, including a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the above-mentioned hollow forming process control method based on metal 3D printing when executing the computer program.

[0025] An embodiment of the present invention discloses a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the above-mentioned hollow forming process control method based on metal 3D printing are implemented.

[0026] The embodiments of the present invention include the following advantages:

[0027] In the embodiment of the present invention, the integrated forming and printing of the hollow structure of the sports equipment product is realized, which greatly saves materials and improves manufacturing efficiency; the hollow structure is integrated and printed to avoid the characteristics that cannot be processed by traditional processing methods; and the processing process flow can be shortened, reducing labor and production costs; the printed part can be hollowed out according to the set scanning path, and the hollow rod diameters at different positions are gradually changed: the gradual change size is 0.07-2mm; different internal hollow structures are formed by 3D printing to achieve different mechanical properties: tensile strength, yield strength, impact strength, elastic modulus; different response efficiencies are achieved: such as impact rebound response time; the sports performance of the product is further improved; it can form pattern feature structures that cannot be achieved by traditional processing, shorten the manufacturing cycle, and the overall structure is formed in one piece, replacing traditional welding forming, and by controlling the filling structure of different hollow parts and different printing process parameters, a wider range of mechanical performance requirements can be achieved: taking titanium alloy TC4 as an example, the Young's modulus of the product formed with all solid structures is 110 to 120Gpa; and after the hollow lattice forming of the present application is adopted, the Young's modulus of the product can reach the range of 70 to 180Gpa. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0029] Figure 1 It is a schematic diagram of an embodiment of a hollowing forming process control method based on metal 3D printing according to an embodiment of the present invention;

[0030] Figure 2 is a schematic diagram of a sports equipment part according to an embodiment of the present invention;

[0031] Figure 3 is a schematic diagram of a lattice filling path according to an embodiment of the present invention;

[0032] Figure 4 is a schematic diagram of a scanning path according to an embodiment of the present invention;

[0033] Figure 5is a schematic diagram of a cross lattice according to an embodiment of the present invention;

[0034] Figure 6 is a schematic diagram of an inclined cross lattice according to an embodiment of the present invention;

[0035] Figure 7 is another schematic diagram of a cross lattice according to an embodiment of the present invention;

[0036] Figure 8 is a schematic diagram of an output structure of an embodiment of the present invention;

[0037] Fig. 9 It is a structural block diagram of an embodiment of a hollowing forming process control device based on metal 3D printing according to an embodiment of the present invention;

[0038] Fig.10 The diagram is a diagram of the internal structure of a computer device according to an embodiment. DETAILED DESCRIPTION

[0039] In order to make the technical problems, technical solutions and beneficial effects solved by the embodiments of the present invention more clearly understood, the embodiments of the present invention are 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 used to limit the present invention.

[0040] Reference Figure 1 , shows a schematic diagram of an embodiment of a hollowing forming process control method based on metal 3D printing according to an embodiment of the present invention, which may specifically include the following steps:

[0041] Step S101, determining a three-dimensional model of a sports equipment part to be printed;

[0042] In the embodiment of the present invention, a three-dimensional model of a sports equipment part to be printed is determined, and the three-dimensional model of the sports equipment part is imported into a path planning application. Figure 2 As shown, the dimensions include: length, width and height: 50mm*50mm*30mm.

[0043] Step S102, determining the wall thickness value of the part;

[0044] In the embodiment of the present invention, a wall thickness value of a part is determined: t value: along the reverse normal direction of any point of the three-dimensional model, a hollow structure is realized in the middle; the t value can be set according to actual conditions, and the embodiment of the present invention does not impose too many restrictions on this; for example, the thickness of any point of the model along the reverse normal line can be T1, and the setting range of the t value can include: 0.1mm≤t≤T1 / 2;

[0045] According to the hollow wall thickness; the hollow structure is directly printed and formed. The solid structure can be hollowed out according to different thicknesses: when the solid structure is hollowed out, it is filled gradually according to the range. For example, the rod diameter d of the lattice lattice can be gradually changed from large to small or from small to large according to the range of 0.07 to 2 mm;

[0046] Step S103, taking the leftmost inner side surface of the part three-dimensional model as the starting position of the lattice filling: taking the X direction of the coordinate system from the center point of the inner side surface as the positive direction; setting the filling lattice size at different positions as the second parameter;

[0047] The leftmost inner side of the part is used as the starting position of the lattice filling: the positive direction of the center point of the inner side toward the positive direction of the X direction of the coordinate system is the positive direction; the filling lattice size at different positions is set as y; the function formula is set for gradual filling, according to the y=kx+b function formula, where the y value is the size of a single unit cell of the lattice, k is a constant value and is not equal to 0, the x value is, and the b value is the initial lattice unit size; x is a positive integer; that is, 1, 2, 3, 4, 5, 6..., etc., and the embodiment of the present invention does not impose too many restrictions on this; after filling at the starting position, the number of lattice units corresponding to the wall thickness of another entity is filled. In the embodiment of the present invention, the second parameter may include the size of a single unit cell of the lattice.

[0048] In a specific example, the wall thickness can be set to 2 mm; the interior is lattice filled; the lattice rod diameter is 2 mm; the original lattice size is 5 mm; and k is set to 0, that is, uniform filling;

[0049] The filled path is as follows Figure 3 As shown: After a certain number of layer thicknesses: initial lattice unit size b / wall thickness value t; the scanning path is as follows Figure 4 As shown; the number of layers of this path method is: (initial lattice unit size b-lattice rod diameter d) / wall thickness value t; it is repeated downward in a cycle.

[0050] In a preferred embodiment of the present invention, as Figure 5 and Figure 6 As shown, the lattice unit includes a cross lattice or an inclined cross lattice; wherein, Figure 7 As shown, the lattice rod diameter is represented by d; the initial unit size of the lattice is the length and width of the lattice; the length and width of the lattice are: 0-100mm.

[0051] Step S104, setting the wall thickness of the external part as the first filling process parameter; and setting the internal lattice as the second filling process parameter; and setting a plurality of feature scanning parameters;

[0052] Specifically, the first filling process parameter can be expressed as P1; the second filling process parameter can be expressed as P2; P1 and P2 can be any data set by a person skilled in the art according to actual conditions, and the embodiment of the present invention does not impose too many restrictions on this. Further, the characteristic scanning parameters may include: scanning power: p value, scanning speed: v value, scanning spacing: h value, scanning layer thickness: b value

[0053] In an embodiment of the present invention, the method includes: controlling and setting the basic parameters scanning speed to 1000 mm / s, scanning power to 300 W, and scanning spacing to 0.1 mm;

[0054] Step S105: When it is detected that the wall thickness of the local structural part is smaller than the diameter of the lattice rod, it is identified as a hollow structure, and the hollow structure parameter control device is used to perform the hollow forming operation of the sports equipment part.

[0055] In the embodiment of the present invention, the hollow structure scanning speed can be controlled to be 1200mm / s, the scanning power is 250W, and the scanning interval is 0.1mm; the support parameter scanning speed can be controlled to be 1600mm / s, the scanning power is 200W, and the output structure is as follows: Figure 8 shown.

[0056] In the embodiment of the present invention, the integrated forming and printing of the hollow structure of the sports equipment product is realized, which greatly saves materials and improves manufacturing efficiency; the hollow structure is integrated and printed to avoid the characteristics that cannot be processed by traditional processing methods; and the processing process flow can be shortened, reducing labor and production costs; the printed part can be hollowed out according to the set scanning path, and the hollow rod diameters at different positions are gradually changed: the gradual change size is 0.07-2mm; different internal hollow structures are formed by 3D printing to achieve different mechanical properties: tensile strength, yield strength, impact strength, elastic modulus; different response efficiencies are achieved: such as impact rebound response time; the sports performance of the product is further improved; it can form pattern feature structures that cannot be achieved by traditional processing, shorten the manufacturing cycle, and the overall structure is formed in one piece, replacing traditional welding forming, and different mechanical performance requirements are achieved by controlling the filling structure of different hollow parts and different printing process parameters: taking titanium alloy TC4 as an example: the Young's modulus of all solid structures is: 110-120Gpa; after forming by hollow dot matrix; the Young's modulus can be achieved: 70-180Gpa.

[0057] It should be noted that, for the method embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that this embodiment is not limited by the order of the actions described, because according to this embodiment, some steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions involved are not necessarily required by this embodiment.

[0058] Reference Fig. 9 , showing a structural block diagram of a hollowing forming process control device based on metal 3D printing according to this embodiment, which may specifically include the following modules:

[0059] The first determination module 301 is used to determine the three-dimensional model of the sports equipment part to be printed;

[0060] The second determination module 302 is used to determine the wall thickness value of the part;

[0061] The first setting module 303 is used to use the leftmost inner side surface of the part three-dimensional model as the starting position of the lattice filling: the X direction of the coordinate system from the center point of the inner side surface is the positive direction; and the filling lattice size at different positions is set as the second parameter;

[0062] The second setting module 304 is used to set the external part wall thickness entity as the first filling process parameter; and set the internal lattice as the second filling process parameter; and set a plurality of feature scanning parameters;

[0063] The detection module 305 is used to detect that the wall thickness of the part is smaller than the lattice rod diameter; identify it as a hollow structure, and use the hollow structure parameter control device to perform the hollow forming operation of the sports equipment part.

[0064] Preferably, the lattice unit comprises a cross lattice or an inclined cross cross lattice; the initial unit size of the lattice is the length and width of the lattice; the length and width of the lattice are: 0-100mm.

[0065] Preferably, the characteristic scanning parameters include: scanning power, scanning speed, scanning spacing and scanning layer thickness.

[0066] Preferably, the device comprises:

[0067] The gradient filling module is used to perform gradient filling according to the function formula y=kx+b, where y is the size of a single unit cell of the lattice, k is a constant value and is not equal to 0, x is, b is the initial lattice unit size, and x is a positive integer.

[0068] Preferably, the device comprises:

[0069] The control setting module is used to control the basic parameter scanning speed to 1000mm / s, the scanning power to 300W, and the scanning spacing to 0.1mm; control the hollow structure scanning speed to 1200mm / s, the scanning power: 250W, and the scanning spacing to 0.1mm; control the support parameter scanning speed to 1600mm / s and the scanning power to 200W.

[0070] Each module in the above hollowing forming process control device based on metal 3D printing can be implemented in whole or in part by software, hardware and their combination. Each module can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to each module above.

[0071] The hollow forming process control device based on metal 3D printing provided above can be used to execute the hollow forming process control method based on metal 3D printing provided in any of the above embodiments, and has corresponding functions and beneficial effects.

[0072] In one embodiment, a computer device is provided, whose internal structure diagram can be as follows: Fig.10 As shown. The computer device includes a processor, a memory, and a charging interface connected via a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. When the computer program is executed by the processor, a hollow forming process control device method based on metal 3D printing is implemented.

[0073] Those skilled in the art will understand that Fig.10 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0074] In one embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the following steps are implemented:

[0075] Determine the three-dimensional model of the sports equipment parts to be printed;

[0076] Determine the wall thickness value of the part;

[0077] The leftmost inner side surface of the part 3D model is used as the starting position of the lattice filling: the X direction of the coordinate system from the center point of the inner side surface is the positive direction; the filling lattice size at different positions is set as the second parameter;

[0078] Setting an external part wall thickness entity as a first filling process parameter; and, setting an internal lattice as a second filling process parameter; and, setting a plurality of feature scanning parameters;

[0079] When it is detected that the wall thickness of the part is smaller than the lattice rod diameter, it is identified as a hollow structure, and the hollow structure parameter control equipment is used to perform the hollow forming operation of the sports equipment part.

[0080] Preferably, it includes:

[0081] Gradient filling is performed according to the function formula y=kx+b, where y is the size of a single unit cell of the lattice, k is a constant value not equal to 0, x is, b is the initial lattice unit size, and x is a positive integer.

[0082] Preferably, it includes:

[0083] The basic parameters are controlled and set to scan at a speed of 1000 mm / s, a power of 300 W, and a spacing of 0.1 mm. The hollow structure scanning speed is controlled and set to scan at a speed of 1200 mm / s, a power of 250 W, and a spacing of 0.1 mm. The support parameters are controlled and set to scan at a speed of 1600 mm / s and a power of 200 W.

[0084] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0085] Determine the three-dimensional model of the sports equipment parts to be printed;

[0086] Determine the wall thickness value of the part;

[0087] The leftmost inner side surface of the part 3D model is used as the starting position of the lattice filling: the X direction of the coordinate system from the center point of the inner side surface is the positive direction; the filling lattice size at different positions is set as the second parameter;

[0088] Setting an external part wall thickness entity as a first filling process parameter; and, setting an internal lattice as a second filling process parameter; and, setting a plurality of feature scanning parameters;

[0089] When it is detected that the wall thickness of the part is smaller than the lattice rod diameter, it is identified as a hollow structure, and the hollow structure parameter control equipment is used to perform the hollow forming operation of the sports equipment part.

[0090] Preferably, it includes:

[0091] Gradient filling is performed according to the function formula y=kx+b, where y is the size of a single unit cell of the lattice, k is a constant value not equal to 0, x is, b is the initial lattice unit size, and x is a positive integer.

[0092] Preferably, it includes:

[0093] The basic parameters are controlled and set to scan at a speed of 1000 mm / s, a power of 300 W, and a spacing of 0.1 mm. The hollow structure scanning speed is controlled and set to scan at a speed of 1200 mm / s, a power of 250 W, and a spacing of 0.1 mm. The support parameters are controlled and set to scan at a speed of 1600 mm / s and a power of 200 W.

[0094] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0095] It will be appreciated by those skilled in the art that the embodiments of the present invention may be provided as methods, devices, or computer program products. Therefore, the embodiments of the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the embodiments of the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0096] The embodiments of the present invention are described with reference to the flowcharts and / or block diagrams of the methods, terminal devices (systems), and computer program products according to the embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of the processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing terminal device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0097] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing terminal device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0098] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device so that a series of operating steps are executed on the computer or other programmable terminal device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable terminal device to implement the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0099] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0100] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0101] The above is a detailed introduction to a hollow forming process control method based on metal 3D printing, a hollow forming process control device based on metal 3D printing, a computer device and a computer-readable storage medium provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for general technicians in this field, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A hollow forming process control method based on metal 3D printing, characterized in that: The method comprises: Determine the three-dimensional model of the sports equipment parts to be printed; Determine the wall thickness value of the part; The leftmost inner side surface of the part 3D model is used as the starting position of the lattice filling: the X direction of the coordinate system from the center point of the inner side surface is the positive direction; the filling lattice size at different positions is set as the second parameter; Setting an external part wall thickness entity as a first filling process parameter; and, setting an internal lattice as a second filling process parameter; and, setting a plurality of feature scanning parameters; When it is detected that the wall thickness of the part is smaller than the lattice rod diameter, it is identified as a hollow structure, and the hollow structure parameter control equipment is used to perform the hollow forming operation of the sports equipment part.

2. The hollow forming process control method based on metal 3D printing according to claim 1 is characterized in that: The lattice unit includes a cross lattice or an inclined cross lattice; the initial unit size of the lattice is the length and width of the lattice; the length and width of the lattice are: 0-100mm.

3. The hollow forming process control method based on metal 3D printing according to claim 1 is characterized in that: The characteristic scanning parameters include: scanning power, scanning speed, scanning spacing and scanning layer thickness.

4. The hollow forming process control method based on metal 3D printing according to claim 1 is characterized in that: The method comprises: Gradual filling is performed according to the function formula y=kx+b, where y is the size of a single unit cell of the lattice, k is a constant value not equal to 0, x is, b is the initial lattice unit size, and x is a positive integer.

5. The hollow forming process control method based on metal 3D printing according to claim 1 is characterized in that: The method comprises: The basic parameters are controlled and set to scan at a speed of 1000 mm / s, a power of 300 W, and a spacing of 0.1 mm. The hollow structure scanning speed is controlled and set to scan at a speed of 1200 mm / s, a power of 250 W, and a spacing of 0.1 mm. The support parameters are controlled and set to scan at a speed of 1600 mm / s and a power of 200 W.

6. A hollow forming process control device based on metal 3D printing, characterized in that: The device comprises: A first determination module is used to determine a three-dimensional model of a sports equipment part to be printed; The second determination module is used to determine the wall thickness value of the part; The first setting module is used to use the leftmost inner side surface of the part three-dimensional model as the starting position of the lattice filling: the X direction of the coordinate system from the center point of the inner side surface is the positive direction; and the filling lattice size at different positions is set as the second parameter; A second setting module is used to set an external part wall thickness entity as a first filling process parameter; and to set an internal lattice as a second filling process parameter; and to set a plurality of feature scanning parameters; The detection module is used to detect when the wall thickness of the part is less than the lattice rod diameter; identify it as a hollow structure, and use the hollow structure parameter control equipment to perform the hollow forming operation of the sports equipment part.

7. The hollow forming process control device based on metal 3D printing according to claim 6 is characterized in that: The lattice unit includes a cross lattice or an inclined cross lattice; the initial unit size of the lattice is the length and width of the lattice; the length and width of the lattice are: 0-100mm.

8. The hollow forming process control device based on metal 3D printing according to claim 6, characterized in that: The characteristic scanning parameters include: scanning power, scanning speed, scanning spacing and scanning layer thickness.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the hollow forming process control method based on metal 3D printing described in any one of claims 1 to 5 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the hollow forming process control method based on metal 3D printing described in any one of claims 1 to 5 are implemented.

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