A method of manufacturing a deformable cabin section

Abstract

The application relates to a manufacturing method of a deformable cabin section, belonging to the technical field of additive manufacturing, and used for solving one of the problems of large local deformation of the cabin section in the additive manufacturing and post-processing process, difficulty in removing a shape control support structure, and large volume of the shape control structure and high material cost, and specifically comprises the following steps: S1-100: constructing a model of the cabin section; and S1-200: constructing a model of a shape control device according to structure parameters of the cabin section. The manufacturing method reduces the local deformation of the cabin section, facilitates the support removing operation, and reduces the material cost and the additive machine time cost.

Description

Technical Field

[0001] This invention relates to the field of additive manufacturing technology, and in particular to a method for manufacturing a deformable compartment. Background Technology

[0002] With the development of high-end manufacturing, in fields such as aerospace and transportation, the structural forms of cabins are trending towards irregular shapes and thin walls, which also poses challenges to shape control during additive manufacturing and post-processing. In particular, to meet the installation, maintenance, and inspection requirements of internal equipment, cabins typically have hatches on the sides of the cabin. Due to the relatively small constraint forces at the edges of these hatches, they experience significant deformation during additive manufacturing and post-processing, necessitating additional shape control measures.

[0003] Current manufacturing methods employ conventional shape control devices, first sealing the hatch with a sluice plate and then using a rib structure for shape control. However, because the sluice plate is typically sintered using part parameters, it has a smooth transition with the compartment structure and high connection strength, making it difficult to cause localized fractures due to stress concentration when the support is removed. Furthermore, the large thickness and number of ribs result in a large overall volume of the shape control support structure, increasing material costs and additive manufacturing time. Additionally, the sluice plate and rib structure are difficult to adjust according to the hatch's location and shape, resulting in weak shape control in the area near the hatch and significant localized surface deformation. Summary of the Invention

[0004] Based on the above analysis, this invention aims to provide a manufacturing method for easily deformable compartments, thereby solving one of the problems of large local deformation of compartments, difficulty in removing shape-controlling support structures, and large volume and high material cost of shape-controlling structures during additive manufacturing and post-processing. The objective of this invention is mainly achieved through the following technical solutions.

[0005] A first aspect of the present invention provides a method for manufacturing a deformable compartment, comprising step S1: determining the structural parameters of a shape control device, wherein step S1 includes the following steps: S1-100: Constructing a model of the compartment; S1-200: Construct a model of the shape control device based on the structural parameters of the compartment.

[0006] Furthermore, in step S1-100, the compartment is a compartment including a hatch; in step S1-200, the structural parameters of the compartment include the main structural parameters of the compartment and the outline of the hatch.

[0007] Furthermore, step S1-200 also includes: setting the process parameters for additive manufacturing; the additive manufacturing adopts a laser selective melting forming process.

[0008] Furthermore, in the process parameters, the fusion strength parameter set for the compartment is higher than the fusion strength parameter set for the shape control device.

[0009] Furthermore, in the process parameters, the laser power set for the compartment is 250-320W, the scanning speed is 1100-1600mm / s, and the scanning border is [not specified].

[0010] Furthermore, in the process parameters, the laser power set for the shaping device is 250-320W, the scanning speed is 1100-1600mm / s, and the border is not scanned.

[0011] Furthermore, the step of determining the structural parameters of the shaping device also includes: S1-300: Perform additive manufacturing process simulation analysis. If the deformation of the compartment exceeds the tolerance range, adjust the structural parameters of the shape control device and repeat step S1-200 until the deformation tolerance requirements of the compartment are met.

[0012] Furthermore, in step S1-300, additive manufacturing process simulation is performed on the structural assembly of the compartment and the shape control device.

[0013] Furthermore, it also includes step S2: using a shape control device for additive manufacturing; and step S3: removing the shape control device from the compartment.

[0014] Furthermore, step S1-200 also includes: all the model components of the shape control device are located in the internal space of the compartment, so that the shape control device provides shape control support for the inner surface of the compartment from the inside out.

[0015] Furthermore, step S1-200 also includes: S1-210: Construct a model of the inner cylinder of the shape control device, wherein the structural parameters of the inner cylinder are determined based on the main structural parameters of the compartment.

[0016] Furthermore, in step S1-210, determining the structural parameters of the inner cylinder includes the following sub-steps: S1-211: Determine the height of the inner cylinder based on the height of the upper edge of the highest hatch of the compartment, so that the height of the inner cylinder is equal to the height of the upper edge of the highest hatch. S1-212: Based on the cross-sectional dimensions of the inner surface of the compartment, determine the cross-sectional dimensions of the outer surface of the inner cylinder, so that there is an equidistant gap between the outer surface of the inner cylinder and the inner surface of the compartment in the transverse direction. S1-213: Determine the wall thickness of the cylinder and the branch pipe based on the wall thickness of the compartment.

[0017] Furthermore, step S1-200 also includes: S1-220: Construct a model of a strut array at the gap, the strut array being used to connect the outer surface of the cylinder and the inner surface of the compartment, thereby providing easily removable shape-controlling support for the compartment.

[0018] Furthermore, in steps S1-220, the array path of the support array is determined according to the outline of the hatch, so that the support array is arranged at the edge of the hatch.

[0019] Furthermore, the support array includes multiple supports, each support array including multiple evenly arranged supports, the bottom end of the support is connected to the outer surface of the cylinder and the top end is used to connect to the edge of the hatch, and the center line of the support is located on the longitudinal section of the cylinder and inclined to the vertical center line of the cylinder.

[0020] In a second aspect, the present invention provides an apparatus for manufacturing a deformable compartment, for implementing the method for manufacturing a deformable compartment as described in the first aspect of the present invention, comprising a shape control assembly and an internal support assembly.

[0021] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects: 1. The manufacturing method of the easily deformable compartment of the present invention, by constructing a shape control device model according to the main structural parameters of the compartment and the outline of the hatch in S1-200, can reduce the local deformation of the compartment, especially the local deformation near the hatch. It effectively solves the technical problem that conventional shape control support structures are difficult to adjust according to the position and shape of the hatch, have weak shape control ability in the area near the hatch, and result in large local surface deformation.

[0022] 2. The manufacturing method of the easily deformable compartment of the present invention arranges all the shape control devices in the internal space of the compartment through steps S1-200, which reduces the overall external size of the shape control devices. This can increase the stability of the overall structure of the support device, reduce the amount of material used in the support device, improve the material utilization efficiency, and reduce manufacturing time.

[0023] 3. The manufacturing method of the easily deformable compartment of the present invention, by setting an inner cylinder in steps S1-210, sets the main supporting component of the shape control device to have a lightweight and stable cylindrical integral structure, so that the deformation is small during additive manufacturing and post-processing. After being connected with the compartment, it can effectively constrain the deformation of the compartment during additive manufacturing. This is beneficial to achieving the lightweight and miniaturization of the shape control device, and can also provide sufficient constraint force for the shape control of the compartment.

[0024] 4. The manufacturing method of the easily deformable compartment of the present invention, through steps S1-200, involves setting a cylinder and branch pipes in the inner cylinder. While maintaining the lightweight of the inner cylinder, it can significantly improve the structural stability of the inner cylinder, so as to provide sufficient constraint force for the shape control of the compartment, improve the material utilization efficiency, and reduce material costs and additive manufacturing machine time costs. In addition, since the thickness of the cylinder and branch pipes is determined according to the wall thickness of the compartment, the weight and rigidity of the inner cylinder can provide a flexible matching support effect for the compartment, avoiding over-constraint or under-constraint.

[0025] 5. The manufacturing method of the easily deformable compartment of the present invention, by adopting a manufacturing method of connecting the compartment and the inner cylinder with a support array, can not only flexibly arrange the support positions according to the shape of the compartment while ensuring the shape control capability, but also reduce the difficulty of removing the subsequent shape control device.

[0026] 6. The manufacturing method of the easily deformable compartment of the present invention, by adopting the method of distributing the support array along the edge of the hatch, can design the array path of the support for different shapes and sizes of the hatch, thereby generating the corresponding support array shape for precise shape control support, effectively reducing the amount of local deformation near the hatch, with good shape control effect and high flexibility; in addition, in the support removal process, since the support array is distributed on the edge of the hatch, the removal tool can be inserted from the outside of the compartment from the hatch, making the structural removal process of the shape control device simpler and easier.

[0027] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained through the embodiments described and the accompanying drawings, which are particularly pointed out. Attached Figure Description

[0028] Figure 1 A structural schematic diagram of a rectangular cross-section compartment with an opening; Figure 2 A schematic diagram of the shape control device used in existing manufacturing methods; Figure 3 A schematic diagram showing the deformation results of the process simulation for additive manufacturing of compartments using existing manufacturing methods; Figure 4 This is a schematic diagram illustrating the specific steps of step S1 in an embodiment of the present invention; Figure 5 This is a three-dimensional structural diagram of the combination of the compartment and the shape control device according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the attached structure of the combination of the compartment and the shape control device according to an embodiment of the present invention; Figure 7This is a step-by-step schematic diagram of steps S1-220 in an embodiment of the present invention; Figure 8 This is a schematic diagram of the process simulation deformation results of the additive manufacturing of the compartment in an embodiment of the present invention.

[0029] Figure label: 1-Inner cylinder; 11-Cylinder body; 12-Branch pipe; 2-Support array; 21-Support; 3-Gap; 4-Compartment section; 41-Hatch; 5-Blocking plate; 6-Rib plate. Detailed Implementation

[0030] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0031] The embodiments of the present invention are illustrated using additive manufacturing of a rectangular cross-section compartment with an opening as an example. Figure 1 This is a structural schematic diagram of a rectangular cross-section compartment with openings. Compartment 4 has a rectangular cross-section and a thin-walled structure. It has multiple rectangular hatches 41 for the installation, maintenance, and inspection of internal equipment. For example, compartment 4 has external dimensions of 200mm in length, 150mm in width, and 500mm in height, with a wall thickness of 2mm. The positions of the hatches 41 are shown below. Figure 1 As shown, the volume of material used in section 4 is 432 cm³. 3 .

[0032] Existing conventional manufacturing methods for additive manufacturing of rectangular cross-section modules involve first sealing the opening with a sealing plate, and then controlling the shape using a rib structure. For example... Figure 2 As shown, the existing conventional shape control structure consists of two parts: an opening sealing plate 5 and a rib plate 6. The sealing plate 5 is used to seal the hatch 41. For example, the sealing plate 5 is 1mm thick, and weakening holes with a diameter of 1mm are added to the sealing plate along the contour of the hatch 41 to facilitate the sealing plate 5 breaking along the weakening holes during removal. The rib plate 6 is perpendicular to the outer surface of the compartment 4 and has the same height as the compartment 4. The cross-sectional length of the rib plate 6 is 30mm, and the thickness is 5mm. The thickness is reduced to 1.5mm at the connection with the compartment 4 to reduce the difficulty of removal. The total volume of material used in the support structure is 803cm³. 3 .

[0033] Taking the materials of section 4 and the shaping device as titanium alloy TC4 as an example, the additive manufacturing method is laser selective melting forming. For instance, the additive manufacturing parameters for section 4, manufactured using existing conventional manufacturing methods, are as follows: for section 4, laser power 300W, scanning speed 1250mm / s, scanning the border; for the support structure, laser power 250W, scanning speed 1400mm / s, not scanning the border. The simulation results of the deformation of the section using the above manufacturing parameters are analyzed, such as... Figure 3 As shown, the simulation analysis results show that only 80% of the outer surface of section 4 is within ±0.5mm of the surface profile, while 20% is outside ±0.5mm.

[0034] Example 1 In a specific embodiment of the present invention, to address the problem of large deformation of section 4 during additive manufacturing and post-processing in existing manufacturing methods, a manufacturing method for easily deformable sections is disclosed, including step S1: determining the structural parameters of the shape control device, such as... Figure 4 As shown, step S1 specifically includes the following steps: S1-100: Construct a model of section 4; S1-200: Construct a model of the shape control device based on the structural parameters of section 4.

[0035] This embodiment takes the additive manufacturing of a segment with a hatch 41 as an example. In step S1-100, segment 4 is a segment including hatch 41. In step S1-200, the structural parameters of segment 4 include the main structural parameters of segment 4 and the outline of hatch 41.

[0036] The manufacturing method of the easily deformable compartment in this embodiment reduces local deformation of the compartment 4, especially local deformation near the hatch 41, by constructing a shape control device model based on the main structural parameters of the compartment 4 and the outline of the hatch 41 in S1-200. This effectively solves the technical problem that conventional shape control support structures are difficult to adjust according to the position and shape of the hatch 41, have weak shape control capabilities in the area near the opening, and result in large local surface deformation.

[0037] Furthermore, considering the large overall volume of existing shape-controlling support structures, such as... Figure 5 As shown, step S1-200 further includes: all the shape control devices are located in the internal space of the compartment 4, so that the shape control devices control the shape of the compartment 4 through the internal shape of the supporting compartment 4.

[0038] The manufacturing method of this embodiment reduces the overall external size of the shape control device by arranging all the shape control devices in the internal space of the compartment 4. This not only increases the stability of the overall structure of the support device, but also reduces the amount of material used in the support device, improves the material utilization efficiency, and reduces manufacturing time.

[0039] Furthermore, considering the issues of large rib thickness and numerous ribs in existing shape-controlling support structures, such as... Figure 5 and Figure 7 As shown, step S1-200 further includes: S1-210: Construct a model of the inner cylinder 1 of the shape control device. The structural parameters of the inner cylinder 1 are determined based on the main structural parameters of the compartment 4.

[0040] By setting an inner cylinder in steps S1-210, the main supporting components of the shape control device are set with a lightweight and stable cylindrical integral structure, so that the deformation is small during additive manufacturing and post-processing. After being connected with the compartment, it can effectively constrain the deformation of the compartment during additive manufacturing. This is conducive to achieving lightweight and miniaturization of the shape control device, and can also provide sufficient constraint force for the shape control of the compartment.

[0041] The determination of the structural parameters of the inner cylinder 1 includes the following steps: S1-211: Determine the height of the inner cylinder 1 based on the height of the upper edge of the highest opening of compartment 4, so that the height of the inner cylinder 1 is equal to the height of the upper edge of the highest opening of compartment 4. S1-212: Based on the cross-sectional dimensions of the inner surface of compartment 4, determine the cross-sectional dimensions of the outer surface of inner cylinder 1, so that there is an equidistant gap 3 between the outer surface of inner cylinder 1 and the inner surface of compartment 4 in the transverse direction.

[0042] In this embodiment, in steps S1-211, the height of the inner cylinder 1 is set to be equal to the height of the upper edge of the highest hatch 41 of the compartment 4. This ensures that the shape control support range covers the upper edge of the hatch 41, effectively reduces the redundant height of the inner cylinder 1, and improves the structural stability of the inner cylinder 1. In steps S1-212, by providing equidistant gaps 3 between the outer surface of the inner cylinder 1 and the inner surface of the compartment 4, reasonable space is provided for arranging the support connection structure. Furthermore, a concentric nested structure with gaps 3 is formed between the outer surface of the inner cylinder 1 and the inner surface of the compartment 4, which is beneficial for providing overall and uniform shape control support to the compartment 4 from the inside out. Moreover, since the cross-sectional dimensions of the inner cylinder 1 are relatively small, the inner cylinder 1 can achieve better structural stability than the compartment 4.

[0043] Furthermore, in order to increase the rigidity of the inner cylinder 1 and avoid the problem of excessive weight, such as... Figure 6 As shown, determining the structural parameters of the inner cylinder 1 in step S1-210 further includes: S1-213: Determine the wall thickness of cylinder 11 and branch pipe 12 based on the wall thickness of section 4. Optionally, the wall thickness of cylinder 11 and branch pipe 12 is 0.5-0.8 times the wall thickness of section 4.

[0044] For example, the inner cylinder 1 includes a cylinder body 11 and branch pipes 12. The branch pipes 12 are arranged longitudinally on the inner wall of the cylinder body 11. For the compartment 4 with a rectangular cross-section, according to the method for determining the structural parameters of the inner cylinder 1 in S1-211 and S1-212, the cross-section of the cylinder body 11 is rectangular. In order to make the structure of the cylinder body 11 more stable, multiple branch pipes 12 are fixed at the right angles and side walls of the inner wall of the cylinder body 11, respectively. While maintaining the lightweight of the inner cylinder 1, the structural stability of the inner cylinder 1 can be significantly improved, so as to provide sufficient constraint force for the shape control of the compartment 4, improve the material utilization efficiency, and reduce material cost and additive manufacturing machine time cost. In addition, since the thickness of the cylinder body 11 and the branch pipes 12 is determined according to the wall thickness of the compartment 4, the weight and rigidity of the inner cylinder 1 can provide a flexible matching support effect for the compartment 4, avoiding over-constraint or under-constraint. For the compartment 4 with a large deformation tendency, the thickness of the inner cylinder body 11 can be increased accordingly to improve the rigidity of the support structure.

[0045] Furthermore, in order to solve the problem of the difficulty in removing the shape-controlling support structure, such as Figure 5 and Figure 6 As shown, step S1-200 further includes: S1-220: Construct a model of the strut array 2 at the gap 3. The strut array 2 is used to connect the inner surface of the cylinder 11 and the compartment 4, thereby providing easily removable shape control support for the compartment 4.

[0046] This embodiment adopts a manufacturing method that connects the compartment 4 and the cylinder 11 using a support array 2, which not only ensures shape control capability but also reduces the difficulty of removing the subsequent shape control device.

[0047] Furthermore, such as Figure 5 and Figure 7 As shown, the support array 2 includes multiple supports, each support array 2 includes multiple evenly arranged supports 21. The bottom end of the support 21 is connected to the outer surface of the cylinder 11 and the top end is used to connect to the easily deformable parts of the inner surface of the compartment 4. The center line of the support 21 is located on the longitudinal section of the cylinder 11 and is inclined to the vertical center line of the cylinder 11.

[0048] For example, the cross-section of the support column 21 is circular, square, or other regular symmetrical shape. The support column array 2 extends upward from the outer surface of the cylinder 11 and connects with the easily deformable part of the inner surface of the compartment 4, realizing precise shape control support for the easily deformable area of ​​the compartment 4. By using the support column array 2 to control the shape support of the inner surface of the compartment 4, not only is the characteristic of the discrete structure of the support column array 2 being easy to remove one by one, effectively reducing the difficulty and workload of the support removal process, but also the diameter and spacing of the support column array 2 can be easily adjusted, further reducing the difficulty of subsequent removal while ensuring shape control capability. The gap 3 between the cylinder 11 and the compartment 4 also reserves space for removing the support column array 2 with tools, eliminating the need for wire cutting and improving the efficiency of the support removal process.

[0049] Furthermore, in order to address the issue of significant local deformation at hatch 41 of section 4, such as... Figure 5 and Figure 7 As shown, in steps S1-220, the array path of the support array 2 is determined according to the outline of the hatch 41, so that the support array 2 is arranged on the edge of the hatch 41.

[0050] In this embodiment, by employing the method of distributing the support array 2 along the edge of the hatch 41 in steps S1-220, the array path of the support 21 can be designed for different shapes and sizes of the hatch 41, thereby generating the corresponding shape of the support array 2 and achieving precise shape control support. This effectively reduces the amount of local deformation near the hatch 41, resulting in good shape control effect and high flexibility. In addition, in the support removal process, since the support array 2 is distributed on the edge of the hatch 41, the removal tool can be inserted from the outside of the compartment 4 through the hatch 41, making the structural removal process of the shape control device simpler and easier.

[0051] Furthermore, in order to flexibly match the shape control supports of different compartments 4, step S1-220 also includes: determining the model parameters of the strut array 2 based on the material stiffness, opening shape and size, gap 3 size and expected deformation deviation of the compartment 4, so that the support stiffness matches the local deformation trend of the compartment 4. The model parameters include the diameter of the strut 21, the spacing between the struts 21 and the tilt angle of the struts 21.

[0052] For example, for section 4 with a high tendency to deform, the thickness of the cylinder 11 and the diameter of the support column 21 can be increased accordingly, and the spacing of the support columns 21 in the support column array 2 can be reduced to improve the rigidity of the support structure. For openings of different shapes and sizes, adjusting the array path of the support columns 21 can generate corresponding array patterns. When the gap 3 between section 4 and inner cylinder 1 increases, the diameter of the support column 21 is increased and the array spacing is reduced to enhance the local support rigidity. When the material rigidity decreases or the expected deformation difference tightens, the tilt angle of the support column 21 is increased accordingly and the array is further densified, so as to ensure the support rigidity while taking into account the convenience of support removal operation and forming accuracy. When the wall thickness or material yield strength of section 4 increases or decreases, the diameter of the support column 21 is increased or decreased accordingly to ensure that it can still be completely removed by conventional hand tools along the opening direction while meeting the shape control rigidity requirements, thereby optimizing the shape control support rigidity, removability and forming accuracy.

[0053] Taking a section 4 with a thickness of 2mm as an example, optionally, the wall thickness of the cylinder 11 and the branch pipe 12 is 0.5-1.5mm, the diameter of the branch pipe 12 is 6-15mm, and the connection between the cylinder 11 and the branch pipe 12 is transitioned with a rounded corner with a radius of 2-5mm. The gap 3 between the outer surface of the inner cylinder 1 and the inner surface of the section 4 is 10-30mm; the diameter of the support column 21 is 0.8-2mm, and the spacing is 1-8mm; the lower end of the support column 21 is connected to the inner cylinder 1, and the upper end is connected to the section 4, and the inclination angle of the centerline of the support column relative to the vertical centerline of the cylinder 11 is 45-55°.

[0054] Furthermore, considering subsequent simulation process analysis, such as Figure 7 As shown, step S1-200 further includes: S1-230: Set the process parameters for additive manufacturing.

[0055] Preferably, the additive manufacturing method of this embodiment is applicable to laser selective melting forming of titanium alloys, aluminum alloys, and high-temperature alloys. Preferably, in steps S1-230, additive manufacturing parameters with high fusion strength are set for section 4. Optionally, the laser power is 300-400W, the scanning speed is 950-1400mm / s, and the border is scanned; solid support parameters with low fusion strength are set for the shape control device. The laser power is 250-320W, the scanning speed is 1100-1600mm / s, and the border is not scanned.

[0056] Furthermore, in order to address the issue of large deformation in section 4, such as... Figure 4 As shown, the steps for determining the structural parameters of the shaping device also include: S1-300: Perform additive manufacturing process simulation analysis. If the deformation of section 4 exceeds the tolerance range, adjust the structural parameters of the shape control device and repeat step S1-200 until the deformation tolerance requirements of section 4 are met.

[0057] This includes simulating the additive manufacturing process of the structural assembly of compartment 4 and the shape control device. By analyzing the deformation of the assembly of compartment 4 and the shape control device during the additive manufacturing process through simulation, the structural parameters of the inner cylinder 1 and the support array 2 are optimized according to steps S1-200.

[0058] The manufacturing method of the easily deformable compartment in this embodiment is adopted because the shape control device is composed of simple geometric elements. The modeling can be completed by basic operations such as stretching, arraying, and offsetting, which reduces the difficulty of support modeling, makes the shape control device easy to model, improves the pre-processing efficiency of additive model, and reduces the pre-processing time of additive model machine.

[0059] Based on the aforementioned dimensional parameters of compartment 4, and according to the method in steps S1-100-S1-300, the structural parameters of the shape control device are determined as follows: the gap 3 between the inner cylinder 1 structure and compartment 4 is 30mm; the outer dimensions of the inner cylinder 1 are 136mm in length, 96mm in width, and 450mm in height; the wall thickness of the cylinder 11 and the branch pipe 12 is 1mm; the diameter of the branch pipe 12 is 10mm; the diameter of the support column 21 is 2mm; the angle of inclination of the centerline of the support column 21 relative to the vertical centerline of the cylinder 11 is 45°; the spacing between the support columns 21 in the support column array 2 is 4mm; the total volume of material used in the shape control device is 415cm³. 3 .

[0060] The material for section 4 and the shaping device is homogeneous titanium alloy TC4, and the additive manufacturing method is laser selective melting forming. The additive manufacturing parameters for the section are: laser power 300W, scanning speed 1250mm / s, scanning the outline; the additive manufacturing parameters for the shaping structure are: laser power 250W, scanning speed 1400mm / s, not scanning the outline. The simulation results of the additive manufacturing deformation of section 4 are as follows: Figure 8 As shown, 96% of the outer surface of compartment 4 is within the theoretical surface profile tolerance of ±0.5mm, and only 4% is outside the theoretical surface profile tolerance of ±0.5mm. Compared with the conventional method of first sealing the opening with a sealing plate and then controlling the shape with a rib structure, the local deviation of the shape is reduced by 16%, which significantly improves the shape control effect of additive manufacturing of compartment 4.

[0061] Furthermore, the manufacturing method of the deformable compartment in this embodiment also includes: Step S2: Additive manufacturing is performed using a shape control device; Step S3: Remove the shape control device from section 4.

[0062] In step S2 of this embodiment, the use of the shaping device with parameters determined in step S1 increases the overall structural stability of the shaping device during additive manufacturing, reduces material usage, improves material utilization efficiency, and reduces manufacturing time. In step S3, the shaping device connects and shapes the compartment 4 through multiple arrayed support pillars 21, significantly reducing the difficulty of removing supports in step S3 and improving overall processing efficiency.

[0063] Example 2 This embodiment provides a shape control device for additive manufacturing of easily deformable compartments, used in the manufacturing method of the easily deformable compartment in Embodiment 1. It includes a shape control component and an inner support component. The shape control component is used to provide a constraint force to control deformation. The inner support component is located between the shape control component and the compartment 4 and is used to transmit the constraint force of the shape control component to the compartment 4.

[0064] Specifically, such as Figure 5 and Figure 6 As shown, the shape control assembly includes an inner cylinder 1. The cross-section of the outer surface of the inner cylinder 1 matches the cross-section of the inner surface of the compartment 4, so that the inner cylinder 1 can be fitted inside the compartment 4 and has an equidistant gap 3 between it and the inner wall of the compartment 4.

[0065] The shape control device of this embodiment, by setting the inner cylinder 1 as the shape control component, can utilize the stability of the integral cylindrical structure to provide the constraint force required for stable shape control of the compartment 4; by matching the cross-section of the outer surface of the inner cylinder 1 with the cross-section of the inner surface of the compartment 4, the constraint force provided by the inner cylinder 1 on the compartment 4 can be made more uniform; by setting an equidistant gap 3 between the cross-section of the outer surface of the inner cylinder 1 and the cross-section of the inner surface of the compartment 4, space can be provided for the arrangement of the inner support component.

[0066] Furthermore, such as Figure 5 and Figure 6 As shown, the internal support assembly includes multiple support column arrays 2, each support column array 2 including multiple uniformly arranged support columns 21. The bottom end of the support column 21 is connected to the outer surface of the inner cylinder 1, and the top end is used to connect to the edge of the hatch 41. The centerline of the support column 21 is located on the longitudinal section of the inner cylinder 1 and is inclined to the vertical centerline of the inner cylinder 1. For example, the cross-section of the support column 21 is circular, square or other regular symmetrical shape.

[0067] The shape control device in this embodiment, by setting up multiple support arrays 2, can uniformly and accurately transmit the constraint force provided by the inner cylinder 1 to the hatch 41, thereby effectively reducing local deformation near the hatch 41. In addition, since the support columns 21 arranged in the array are independent of each other, they are easy to remove one by one, which significantly reduces the removal difficulty of the shape control device. At the same time, the tool can be inserted from the hatch 41, with enough space and a suitable angle to contact and remove the support columns 21 arranged in the array. Moreover, for hatches 41 of different shapes and sizes in the compartment 4, the array path of the support columns 21 can be adjusted to generate the corresponding array shape, which improves the shape control effect and design flexibility of the shape control device.

[0068] Furthermore, in order to address the issue of the relatively thick and heavy shape control structure, such as Figure 6 As shown, the inner cylinder 1 includes a cylinder body 11 and a branch pipe 12, with the branch pipe 12 arranged longitudinally on the inner wall of the cylinder body 11.

[0069] For example, the cross-section of the cylinder 11 is rectangular. In order to make the structure of the cylinder 11 more stable, multiple branch pipes 12 are fixed at the right angles and side walls of the inner wall of the cylinder 11, respectively. This can significantly improve the structural stability of the inner cylinder 1 while keeping the inner cylinder 1 lightweight, so as to provide sufficient constraint force for the shape control of the compartment 4, improve the utilization efficiency of materials, and reduce material costs and additive manufacturing time costs.

[0070] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for manufacturing a deformable compartment, characterized in that, Step S1 includes determining the structural parameters of the shaping device. Step S1 includes the following steps: S1-100: Construct a model of module (4); S1-200: Construct a model of the shape control device based on the structural parameters of the compartment (4).

2. The manufacturing method of the easily deformable compartment according to claim 1, characterized in that, In step S1-100, the compartment (4) is a compartment including a hatch (41); in step S1-200, the structural parameters of the compartment (4) include the main structural parameters of the compartment (4) and the outline of the hatch (41).

3. The manufacturing method of the easily deformable compartment according to claim 1, characterized in that, Step S1-200 further includes: setting the process parameters for additive manufacturing; the additive manufacturing adopts a laser selective melting forming process.

4. The method for manufacturing the easily deformable compartment according to claim 3, characterized in that, Among the process parameters, the fusion strength parameter set for the compartment (4) is higher than the fusion strength parameter set for the shape control device.

5. The method for manufacturing the easily deformable compartment according to claim 4, characterized in that, In the process parameters, the laser power set for the compartment (4) is 250-320W, the scanning speed is 1100-1600mm / s, and the scanning border is [not specified].

6. The method for manufacturing the easily deformable compartment according to claim 5, characterized in that, In the process parameters, the laser power set for the shape control device is 250-320W, the scanning speed is 1100-1600mm / s, and the border is not scanned.

7. The method for manufacturing the easily deformable compartment according to claim 1, characterized in that, The step of determining the structural parameters of the shaping device further includes: S1-300: Perform additive manufacturing process simulation analysis. If the deformation of the compartment (4) exceeds the tolerance range, adjust the structural parameters of the shape control device and repeat step S1-200 until the deformation tolerance requirements of the compartment (4) are met.

8. The method for manufacturing the easily deformable compartment according to claim 7, characterized in that, Step S1-300 includes performing additive manufacturing process simulation on the structural assembly of the compartment (4) and the shape control device.

9. The method for manufacturing a deformable compartment according to any one of claims 1 to 8, characterized in that, It also includes step S2: additive manufacturing using a shape control device; step S3: removing the shape control device from the compartment (4).

10. A manufacturing apparatus for a deformable compartment, characterized in that, The method for manufacturing the deformable compartment according to any one of claims 1 to 9 includes a shape control assembly and an internal support assembly.

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