CN115889814A - Part forming method, terminal equipment and selective laser melting forming system - Google Patents
Part forming method, terminal equipment and selective laser melting forming system Download PDFInfo
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- CN115889814A CN115889814A CN202211529672.2A CN202211529672A CN115889814A CN 115889814 A CN115889814 A CN 115889814A CN 202211529672 A CN202211529672 A CN 202211529672A CN 115889814 A CN115889814 A CN 115889814A
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Abstract
The invention discloses a part forming method, terminal equipment and a selective laser melting forming system, relates to the technical field of selective laser melting forming, and is used for simplifying the forming process of parts and shortening the forming period of the parts. The part forming method comprises the steps of obtaining initial structure information of a part; determining the forming direction of the part according to the initial structure information; determining an inclined structure with a cavity of the part by combining the forming direction and the initial structure information, wherein an included angle alpha is formed between the inclined structure and the forming direction, and alpha is more than 45 degrees and less than 90 degrees; constructing a supporting structure for supporting the inclined structure in the initial structure information, and obtaining the processing structure information of the part; the support structure comprises a plurality of support plates parallel to the forming direction; controlling a forming device to perform machining forming on the part according to the machining structure information; and performing subsequent treatment to obtain the part. The terminal equipment comprises a processing module and a communication module, and the selective laser melting forming system comprises forming equipment and the terminal equipment.
Description
Technical Field
The invention relates to the technical field of selective laser melting and forming, in particular to a part forming method, terminal equipment and a selective laser melting and forming system.
Background
The selective laser melting forming is based on the basic idea of rapid forming, a layer-by-layer cladding additive manufacturing mode is adopted, a three-dimensional model of a part is sliced and layered according to a certain thickness, and then the molten metal powder is controlled by laser through a vibrating mirror under the control of a numerical control system to be directly formed into the part with a specific geometric shape. The metal powder is completely melted in the selective laser melting forming process to generate metallurgical bonding, and the formed part has the characteristics of good compactness, high structure performance and the like, and can form high-precision complex special-shaped metal parts.
With the gradual maturity of selective laser melting and forming technology, the application field of the selective laser melting and forming technology is wider and wider, and more parts which cannot be realized by adopting the traditional process are manufactured by the selective laser melting and forming technology. And for parts with cavities and inclined structures with inclination angles smaller than 45 degrees, the cavities are used for containing gas or liquid. In the prior art, in the manufacturing process by adopting a selective laser melting forming mode, an integrated supporting block is generally added to an inclined structure, and the added supporting block is removed after forming. The general method is to split the inclined structure, add supporting blocks to the split inclined structure, remove the supporting blocks of each split inclined structure after the split inclined structure is formed, and then weld the split inclined structures together.
When the method is adopted to process the part with the cavity and the inclined structure with the inclined angle smaller than 45 degrees, the part formed after welding is easy to deform, has different sizes and different deformation amounts, and is difficult to quantify. Moreover, the quality after welding is difficult to ensure, metallurgical defects such as air holes and incomplete fusion are easy to generate, parts can be scrapped in serious cases, and meanwhile, the process is complicated, and the forming period of the parts is prolonged.
Disclosure of Invention
The invention aims to provide a part forming method, terminal equipment and a selective laser melting forming system, which are used for simplifying the forming process of parts and shortening the forming cycle of the parts.
In order to achieve the above object, in a first aspect, the present invention provides a part forming method applied to a selective laser melting forming system, which includes a forming apparatus. The part forming method comprises the following steps:
acquiring initial structure information of a part;
determining the forming direction of the part according to the initial structure information;
determining an inclined structure with a cavity of the part by combining the forming direction and the initial structure information, wherein an included angle alpha is formed between the inclined structure and the forming direction, and alpha is more than 45 degrees and less than 90 degrees;
constructing a supporting structure for supporting the inclined structure in the initial structure information, and obtaining the processing structure information of the part; the supporting structure comprises a plurality of supporting plates parallel to the forming direction, the top ends of the supporting plates are supported on the inclined structure, and gaps are formed between the adjacent supporting plates;
controlling a forming device to perform machining forming on the part according to the machining structure information;
and performing subsequent treatment to obtain the part.
When the technical scheme is adopted, the part forming method provided by the invention is applied to a selective laser melting forming system with forming equipment. During specific implementation, in the process of machining and forming the part, initial structure information of the part is firstly acquired, then the forming direction of the part is determined according to the initial structure information, then the forming direction and the initial structure information are combined to determine the inclined structure with the cavity of the part, an included angle alpha is formed between the inclined structure and the forming direction, and alpha is larger than 45 degrees and smaller than 90 degrees. Then, a support structure for supporting the inclined structure is constructed in the initial structure information, thereby obtaining machining structure information of the part. Furthermore, the support structure comprises a plurality of support plates parallel to the forming direction. And then, controlling a forming device to perform machining forming on the part according to the machining structure information of the part. And finally, processing to obtain the part. In the part forming method provided by the invention, a support structure for supporting the inclined structure is constructed in the initial structure information, the support structure comprises a plurality of support plates parallel to the forming direction, the top ends of the support plates are supported on the inclined structure, and gaps are arranged between the adjacent support plates, thereby showing that the cavities can still contain gas or liquid. Therefore, after the part is formed, the supporting structure does not need to be removed, and compared with the prior art, the part forming method provided by the invention does not need to split the inclined structure, uses forming equipment for direct forming, omits a welding process, further simplifies the part forming process, shortens the part forming period and improves the strength of the part.
In addition, compared with the supporting block in the prior art, the supporting structure provided by the invention can save the using amount of metal powder and reduce the forming cost of parts.
In a second aspect, the invention further provides a terminal device, which is applied to a selective laser melting forming system with a forming device, and comprises a processing module and a communication module. The processing module is provided with a storage medium for storing the part forming method, and the communication module is connected with the processing module and used for being in communication connection with the forming equipment.
The beneficial effects of the terminal device provided by the second aspect are the same as the beneficial effects of the part forming method described in the first aspect, and are not described herein again.
In a third aspect, the invention further provides a selective laser melting forming system, which includes a forming device and the terminal device described in the second aspect, wherein the forming device is in communication connection with the terminal device, and the terminal device controls the forming device to process a formed part.
The beneficial effects of the selective laser melting forming system provided by the third aspect are the same as the beneficial effects of the terminal device described in the second aspect, and the details are not repeated here.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of a component provided in an embodiment of the present invention;
FIG. 2 is a schematic structural view of a part having a support structure after forming;
FIG. 3 is a schematic flow chart of a part forming method according to an embodiment of the present invention;
fig. 4 is a control block diagram of a selective laser melting system according to an embodiment of the present invention.
Reference numerals:
110-processing module, 120-communication module, 200-forming device, 210-substrate,
300-heat treatment equipment, 410-inclined structure, 421-supporting plate, 4211-hollowed-out hole,
430-clear powder passageway.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, which are merely for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and operate, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Based on the basic idea of rapid forming, selective laser melting forming (SLM for short) adopts a layer-by-layer cladding additive manufacturing mode to slice and layer a three-dimensional model of a part according to a certain thickness, and then molten metal powder is controlled by laser through a vibrating mirror under the control of a numerical control system to directly form the part with a specific geometric shape. The metal powder is completely melted in the selective laser melting forming process to generate metallurgical bonding, and the formed part has the characteristics of good compactness, high structure performance and the like, and can form high-precision complex special-shaped metal parts.
With the gradual maturity of the selective laser melting and forming technology, the application field of the selective laser melting and forming technology is wider and wider, and parts which cannot be realized by the traditional process are manufactured by the selective laser melting and forming technology more and more. And for parts with cavities and inclined structures with inclination angles smaller than 45 degrees, the cavities are used for containing gas or liquid. In the prior art, in the manufacturing process by adopting a selective laser melting forming mode, an integrated supporting block is generally added to an inclined structure, and the added supporting block is removed after forming. The general method adopted is to split the inclined structure, add supporting blocks to the split inclined structure, respectively shape the split inclined structure, remove the supporting block of each split inclined structure, and then weld the split inclined structures together.
When the method is adopted to process the part with the cavity and the inclined structure with the inclination angle smaller than 45 degrees, the part formed after welding is easy to deform, and the parts have different sizes and deformation amounts and are difficult to quantify. Moreover, the quality after welding is difficult to ensure, metallurgical defects such as air holes and incomplete fusion are easy to generate, parts can be scrapped in serious cases, and meanwhile, the process is complicated, and the forming period of the parts is prolonged.
In order to solve the technical problems in the prior art, in a first aspect, an embodiment of the present invention provides a part forming method, which is applied to a selective laser melting forming system, where the selective laser melting forming system includes a forming apparatus 200. It should be noted that, for ease of understanding, the method for forming a part according to the embodiment of the present invention will be described in detail by taking the example of forming a part as shown in fig. 1 by using a selective laser melting forming system. It should be noted that the component shown in fig. 1 has a cavity, the outer wall of the cavity is a conical boss-shaped structure, and the included angle between the outer wall of the cavity and the forming direction is in the range of 45 ° < α < 90 °, that is, the included angle between the tangential extending direction of the outer wall or the outer wall of the cavity and the horizontal plane is in the range of 0 ° < α < 45 °. The cavity may be used to contain a gas or liquid.
As shown in fig. 3, the part forming method includes:
step S100: and acquiring initial structure information of the part.
As a possible implementation, referring to fig. 1, the initial structural information of the part is a three-dimensional model of the part. And constructing a three-dimensional model of the part in the three-dimensional software according to the actual size information of the part. The three-dimensional model of the part can observe the structure of the part more intuitively, and is convenient for subsequent processing and forming. In practical application, the three-dimensional software may be software capable of constructing a three-dimensional model of a part, such as UG and ProE, and of course, the selection of the three-dimensional software is selected according to actual situations, which is only for example and is not specifically limited.
Step S200: and determining the forming direction of the part according to the initial structure information.
And determining the forming direction of the part according to the self structural characteristics of the part and the initial structural information of the part. In particular, the forming direction of the part is the direction of increase during deposition during the forming process. In the embodiment provided by the present invention, the substrate 210 may be used as a forming platform, a laser is used as an energy source, and the forming apparatus 200 is used to scan the surface of the substrate 210 layer by layer according to the forming direction of the component, and the upper surface of the substrate 210 is horizontally disposed. And melting and solidifying the scanned metal powder to achieve the metallurgical bonding effect, and finally obtaining the part according with the three-dimensional model of the part. The forming direction of the part is selected based on the basic principles of stability, less support and short forming time. In the embodiment provided by the present invention, in practical terms, during forming, the upper surface of the substrate 210 is horizontally disposed, and the forming direction is perpendicular to the upper surface of the substrate 210, that is, the forming direction is along a vertical direction, as shown in fig. 2.
Step S300: and determining an inclined structure 410 with a cavity of the part by combining the forming direction and the initial structure information, wherein an included angle alpha is formed between the inclined structure 410 and the forming direction, and alpha is more than 45 degrees and less than 90 degrees.
As shown in fig. 1 and 2, after the forming direction of the part is determined, the inclined structure 410 having the cavity is judged along the forming direction. In the part provided by the embodiment of the present invention, as shown in fig. 2, the inclined structure 410 is a sidewall of a tapered boss-like structure, and the inclined structure 410 has a cavity.
Step S400: a support structure for supporting the inclined structure 410 is constructed in the initial structure information, and machining structure information of the part is obtained. The support structure comprises a plurality of support plates 421 parallel to the forming direction, the top ends of the support plates 421 being supported on the inclined structure with gaps between adjacent support plates 421.
This shows that the cavity can still contain gas or liquid. Therefore, after the part is formed, not only the support structure does not need to be removed, but also compared with the prior art, the part forming method provided by the embodiment of the invention does not need to disassemble the inclined structure 410, uses the forming equipment 200 to directly form, omits a welding process, further simplifies the part forming process, shortens the part forming cycle and improves the strength of the part. In addition, compared with the supporting block in the prior art, the supporting structure provided by the invention can save the using amount of metal powder and reduce the forming cost of parts.
The support structure is a grid-like support structure, and comprises a plurality of support plates 421 parallel to the forming direction, after forming, the lower ends of the support plates 421 are supported by the base plate 210, and the upper ends of the support plates 421 are supported on the inner wall of the inclined structure 410 of the component. The structure and size of the supporting plate 421 may be the same or different, depending on the relative position between the supporting plate 421 and the inclined structure 410. Illustratively, referring to FIG. 2, it will be appreciated that the height of the support plate 421 at a location remote from the axis of the part is less than the height of the support plate 421 at a location proximate to the axis of the part. The supporting plate 421 is used to enhance the stability of the part during the forming process and reduce the deformation of the part during the forming process. The plurality of support plates 421 may be sequentially arranged at intervals along a direction perpendicular to the forming direction, and of course, the plurality of support plates 421 may also be sequentially arranged at intervals along the circumferential direction of the component, which is not particularly limited herein.
Step S500: and controlling the forming device 200 to perform the machining forming of the part according to the machining structure information. When the method is implemented specifically, the processing structure information of the part is sliced and layered according to the processing structure information, then the slicing and layering are conducted on the processing structure information, the terminal device is introduced, and the forming device 200 is controlled by the terminal device to perform processing and forming on the part, so that the part with the supporting structure is obtained.
It should be noted that the processing structure information of the part includes the initial structure information and the support structure information, i.e., the constructed support structure is formed along with the initial structure of the part during the forming process of the part using the forming apparatus 200. In addition, the processing structure information of the part also comprises information of slicing and layering processing on the part along the forming direction of the part, so that the part is clad layer by layer according to the forming direction during forming.
Step S600: and performing subsequent treatment to obtain the part.
As a possible implementation manner, in step S600, the subsequent processing includes:
step S600-1: the residual powder was removed.
In the specific implementation, after the part is formed and cooled for a certain time, the substrate 210 and the formed part are taken out. The substrate 210 and the formed part may then be cleaned of residual powder using compressed air and a vibrating table. The powder on the surface of the substrate 210 and the molded part is cleaned by compressed air, and the powder remaining inside the substrate 210 and the molded part is cleaned by a vibration table.
Step S600-2: the heat treatment is performed on the part that is controlled to be machine-formed by the forming apparatus 200 based on the machining structure information.
By adopting the technical scheme, the internal structure organization of the part can be optimized, and the mechanical property of the part is improved.
The subsequent processing further comprises:
step S600-3: the substrate 210 is separated from the parts.
Step S600-4: and integrally grinding, polishing and sandblasting the outer surface of the part.
Alternatively, in the embodiment of the present invention, the substrate 210 may be separated from the component by wire cutting, and then the outer surface of the component is integrally ground, polished, and sandblasted as required to obtain the final component.
From the above, the part forming method provided by the embodiment of the invention is applied to the laser selective melting forming system with the forming device 200. During the specific implementation, in the process of machining and forming the part, the initial structure information of the part is firstly acquired, then the forming direction of the part is determined according to the initial structure information, then the forming direction and the initial structure information are combined to determine the inclined structure 410 with the cavity of the part, an included angle alpha is formed between the inclined structure 410 and the forming direction, and alpha is larger than 45 degrees and smaller than 90 degrees. Then, a support structure for supporting the inclined structure 410 is constructed in the initial structure information, thereby obtaining machining structure information of the part. The support structure includes a plurality of support plates 421 parallel to the forming direction, the top ends of the support plates 421 are supported by the inclined structure, and a gap is formed between adjacent support plates 421. Then, the forming device 200 is controlled to perform the machining forming of the part according to the machining structure information of the part. And finally, processing to obtain the part. In the part forming method provided by the present invention, the support structure for supporting the inclined structure 410 is constructed in the initial structural information, and the support structure includes the support plates 421 parallel to the forming direction, the top ends of the support plates 421 are supported to the inclined structure with gaps between the adjacent support plates 421, thereby indicating that the cavities can still contain gas or liquid. Therefore, after the part is formed, the supporting structure does not need to be removed, and compared with the prior art, the part forming method provided by the invention does not need to split the inclined structure 410, uses the forming equipment 200 for direct forming, omits a welding process, further simplifies the part forming process, shortens the part forming period and improves the strength of the part.
It should be noted that, in the forming method provided in the embodiment of the present invention, the size of the included angle α between the inclined structure 410 and the forming direction of the applicable part is not limited, and α is greater than 45 ° < α < 90 °, and for example, α may be 50 °, 60 °, 75 °, 80 °, and the like.
In a possible implementation manner, the supporting plate 421 is provided with a hollow hole 4211. Therefore, on one hand, the weight of the part can be reduced, the using amount of the metal powder is saved, and the processing cost is reduced. On the other hand, when the cavity of the inclined structure 410 is used to contain liquid or gas, the containing amount of the cavity can be enlarged, and the fluidity of the contained liquid or gas can be improved. In practical terms, when the part provided by the embodiment of the present invention as shown in fig. 1 has a bottom end, so that the cavity has only one opening, as shown in fig. 1 and fig. 2, the opening can be used for injecting and discharging gas or liquid into and from the cavity when the part is formed by using the part forming method provided by the embodiment of the present invention, the powder cleaning channel 430 communicated with the opening can be formed during the forming process, so as to facilitate subsequent cleaning of powder in the cavity.
In some embodiments, the hollowed-out holes 4211 are elliptical holes having a ratio of their major diameter to their minor diameter greater than 2:1. In this case, when the structure and the size of the support plate 421 are fixed, the area of the through hole 4211 can be increased to the maximum extent, the weight of the component can be reduced, and the amount of metal powder used can be reduced. Also, referring to fig. 2, the major axis of the elliptical hole extends in a direction parallel to the forming direction.
Alternatively, the adjacent two support plates 421 may be spaced apart by the same distance. So, can promote the homogeneity of part, avoid the part to take place deformation.
In one example, the width of the supporting plate 421 is 0.8mm to 1.5mm, and the width of the supporting plate 421 may be 0.8mm, 0.9mm, 1mm, 1.2mm, 1.3mm, 1.5mm, etc., which are merely illustrative and not particularly limited. The spacing distance between two adjacent supporting plates 421 is 1.5 mm-2.5 mm, and exemplarily, the spacing distance between two adjacent supporting plates 421 may be 1.5mm, 1.6mm, 1.8mm, 2mm, 2.2mm, 2.5mm, and the like, which are only for example and are not specifically limited, so as to support the part during the forming process, facilitate the forming of the inclined structure 410, and simultaneously reduce the space occupied by the supporting structure as much as possible.
In an alternative mode, a fillet is arranged at the joint of the supporting plate 421 and the inclined structure 410, so that the stress between the supporting plate 421 and the part is reduced, the part is prevented from cracking, and the structural strength of the formed part is ensured.
In a second aspect, the embodiment of the present invention further provides a terminal device, which is applied to a laser selective melting forming system with a forming device 200, and the terminal device includes a processing module 110 and a communication module 120. The process module 110 is provided with a storage medium storing the above-described part forming method, and the communication module 120 is connected to the process module 110 for communication with the forming apparatus 200.
The beneficial effects of the terminal device provided by the second aspect are the same as the beneficial effects of the part forming method described in the first aspect, and are not described herein again.
In a third aspect, the embodiment of the present invention further provides a selective laser melting forming system, which includes the forming device 200 and the terminal device described in the second aspect, wherein the forming device 200 is in communication connection with the terminal device, and the terminal device controls the forming device 200 to process a formed part.
In practical application, the selective laser melting and forming system provided by the embodiment of the invention further comprises a heat treatment device 300, the heat treatment device 300 is in communication connection with the terminal device, and the heat treatment device 300 can perform heat treatment on the part.
The forming device 200 and the heat treatment device 300 provided by the embodiment of the invention are both in communication connection with the processing module 110 through the communication module 120 of the terminal device. Communication connection mode in the embodiment of the invention
The communication can be wireless communication or wired communication. The wireless communication may be based on wifi, zigbee, etc. networking technologies 5. Wired communication may implement a communication connection based on a data line or a power line carrier. The communication interface can
As a standard communication interface. The standard communication interface may be a serial interface or a parallel interface. For example, the terminal device may use an I2C (Inter-Integrated Circuit) bus communication, and may also use a power line carrier communication technology to implement the communication connection with the forming device 200 and the heat treatment device 300.
The Processing module 110 may be a Processor or a controller, and may be, for example, a Central Processing Unit (CPU), a general purpose Processor, a Digital Signal Processor (DSP), an Application-Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or carry out the incorporation of the invention
The logic blocks, modules, and circuits described in the disclosure are disclosed. A processor may also be a combination of performing computing functions, 5 comprising, for example, one or more microprocessors, a combination of a DSP and a microprocessor, or the like. Communication module 120
May be a transceiver, transceiving circuitry, or a communication interface, etc. The storage medium may be a memory.
The beneficial effects of the selective laser melting forming system provided by the third aspect are the same as those of the terminal device described in the second aspect, and are not described herein again.
Hereinafter, a part forming method, a terminal device, and a selective laser melting forming system according to an embodiment of the present invention will be described in detail by taking an example of forming a part shown in fig. 1 using a selective laser melting forming system
And (4) description. It is understood that this is by way of example only and is not intended to be limiting.
As shown in fig. 1 to 4, a three-dimensional model of the part shown in fig. 1 is first established in UG software, and a forming direction of the part is determined. Determining a tilted structure 410 with a cavity of the part by combining the forming direction and the three-dimensional model of the part, and constructing a supporting structure for supporting the tilted structure 410 in UG software, thereby obtaining 5 processing structure information of the part. Then, exporting a model file such as STL format file, and exporting three parts
Both the angular and adjacent tolerances are set to 0.0025. And then, importing a model file of the part, such as an STL format file, into additive manufacturing auxiliary software, such as Magics software, opening the STL format part file in the Magics software, and repairing the part model by using a repair guide function without adding other auxiliary supports. The parts having the support structure are layered and sliced in the part forming direction, and then the above information is introduced into the storage medium in the processing module 110, and the processing module 110 controls the forming apparatus 200 through the communication module 120 to clad the formed parts layer by layer in the forming direction with the substrate 210 as a forming platform. It should be noted that the substrate 210 belongs to the self-contained structure of the selective laser melting and forming apparatus 200. After the completion, the part is taken out of the molding apparatus 200, the residual powder is removed, the part is put into the heat treatment apparatus 300, and the heat treatment apparatus 300 is controlled by the processing module 110 of the terminal apparatus through the communication module 120 to perform heat treatment on the part. Finally, the substrate 210 is separated from the part by using a wire cutting method, and the outer surface of the part is integrally ground, polished and sandblasted as required, so as to obtain the final part.
The grid-shaped supporting structure does not need to be removed at the later stage, the weight of the grid-shaped supporting structure is controlled, the grid-shaped supporting structure can be integrally formed through a selective laser melting forming process, the matching of welding procedures is not needed, the cost is saved, the period is shortened, and the effect of the grid-shaped supporting structure on batch production of parts is more obvious.
In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The part forming method is characterized by being applied to a selective laser melting forming system, wherein the selective laser melting forming system comprises forming equipment; the part forming method includes:
acquiring initial structure information of a part;
determining the forming direction of the part according to the initial structure information;
determining an inclined structure with a cavity of the part by combining the forming direction and the initial structure information, wherein an included angle alpha is formed between the inclined structure and the forming direction, and alpha is more than 45 degrees and less than 90 degrees;
constructing a supporting structure for supporting the inclined structure in the initial structure information, and obtaining the processing structure information of the part; wherein the support structure comprises a plurality of support plates parallel to the forming direction, the top ends of the support plates are supported on the inclined structure, and gaps are arranged between adjacent support plates;
controlling the forming equipment to perform machining forming on the part according to the machining structure information;
and carrying out subsequent processing to obtain the part.
2. The part forming method according to claim 1, wherein the initial structural information of the part is a three-dimensional model of the part.
3. The method as claimed in claim 1, wherein the support plate is perforated.
4. The part forming method of claim 3, wherein the hollowed-out holes are elliptical holes, and a ratio of a major diameter of the elliptical holes to a minor diameter of the elliptical holes is greater than 2:1.
5. The part forming method according to claim 1, wherein a spacing distance between adjacent two of the support plates is the same.
6. The part forming method according to claim 1, wherein the width of the support plate is 0.8mm to 1.5mm, and the spacing distance between adjacent two of the support plates is 1.5mm to 2.5mm.
7. The part forming method as claimed in claim 3, wherein a junction of the support plate and the inclined structure is provided with a rounded corner.
8. The part forming method according to claim 1, wherein the subsequent processing includes:
removing residual powder;
and carrying out heat treatment on the part which is processed and formed by controlling the forming equipment according to the processing structure information.
9. A terminal device for use in a selective laser melting system having a forming device, the terminal device comprising:
a process module provided with a storage medium storing the part forming method according to any one of claims 1 to 8;
and the communication module is connected with the processing module and is used for being in communication connection with the forming equipment.
10. A selective laser melting system, comprising:
the terminal device of claim 9;
and the terminal equipment is in communication connection with the terminal equipment, and controls the forming equipment to process and form the part.
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| CN202211529672.2A CN115889814A (en) | 2022-11-30 | 2022-11-30 | Part forming method, terminal equipment and selective laser melting forming system |
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| CN202211529672.2A CN115889814A (en) | 2022-11-30 | 2022-11-30 | Part forming method, terminal equipment and selective laser melting forming system |
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| CN202211529672.2A Pending CN115889814A (en) | 2022-11-30 | 2022-11-30 | Part forming method, terminal equipment and selective laser melting forming system |
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| CN (1) | CN115889814A (en) |
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2022
- 2022-11-30 CN CN202211529672.2A patent/CN115889814A/en active Pending
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