CN116100811A - Printing part forming method and device, electronic equipment and nonvolatile storage medium - Google Patents
Printing part forming method and device, electronic equipment and nonvolatile storage medium Download PDFInfo
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- CN116100811A CN116100811A CN202310399706.9A CN202310399706A CN116100811A CN 116100811 A CN116100811 A CN 116100811A CN 202310399706 A CN202310399706 A CN 202310399706A CN 116100811 A CN116100811 A CN 116100811A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/386—Data acquisition or data processing for additive manufacturing
- B29C64/393—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The application discloses a printing part forming method, a printing part forming device, electronic equipment and a nonvolatile storage medium. Wherein the method comprises the following steps: determining an active heat preservation curve corresponding to a target position in target forming equipment according to a target type of target powder, wherein the target powder is a raw material for printing a target printing piece, and the active heat preservation curve is used for indicating the change trend of the temperature of the target position along with time; according to the active heat preservation curve, adjusting a heating device corresponding to the target position so as to change the temperature of the target position according to the trend of the active heat preservation curve; and controlling a heat radiating device in the target forming equipment to actively cool under the condition that the powder surface temperature of the target powder is not more than the powder crystallization temperature corresponding to the tail end of the active heat preservation curve, so as to obtain the target printing piece. The method solves the technical problem that the printed piece is easy to warp and deform after being molded due to the fact that a direct cooling mode is adopted in the cooling and solidifying process of the printed piece in the related technology.
Description
Technical Field
The application relates to the technical field of 3D printing heat treatment, in particular to a printing piece forming method, a device, electronic equipment and a nonvolatile storage medium.
Background
The SLS (Selective Laser Sintering ) technology molding relates to a mold melting and resolidifying process, and the mold melting and resolidifying process is the same as the traditional injection molding technology, and relates to the cooling and solidifying problem, besides the fact that the sintering occupies a certain time, the cooling and solidifying time of a molded part is a longer process, the uniform and reasonable cooling speed has great influence on the performance and molding precision of the molded part, if the cooling speeds are different, the problem of buckling deformation of different positions of the mold is caused, and the related technical scheme mainly comprises the following two modes for the process:
the first mode is that the molding cylinder body is naturally cooled along with the natural cooling of the furnace, and the molding cylinder body is naturally cooled in the inert gas environment in the equipment;
the second mode is active cooling, after the equipment sintering molding is completed, the molding cylinder body is moved out from the equipment and placed in an external cooling station, and the heat is taken away by an external air pumping body, so that the purpose of rapid cooling is achieved;
however, the cooling time of the first mode is longer, the production efficiency is greatly reduced, the active cooling in the second scheme can lead to the rapid reduction of the temperature, especially the temperature difference between the surface and the interior of the powder can be rapidly increased, if the crystallization temperature of the powder is high, and the cooling rates of different areas of the cylinder body are inconsistent, the problems of bending deformation of a formed part, mechanical property deterioration caused by rapid cooling and the like are easily caused.
In view of the above problems, no effective solution has been proposed at present.
Disclosure of Invention
The embodiment of the application provides a printing part forming method, a device, electronic equipment and a nonvolatile storage medium, which at least solve the technical problem that a printing part is easy to warp and deform after being formed due to the fact that a direct cooling mode is adopted in the cooling and solidifying process of the printing part in the related technology.
According to an aspect of an embodiment of the present application, there is provided a print forming method including: determining an active heat preservation curve corresponding to a target position in target forming equipment according to a target type of target powder, wherein the target powder is a raw material for printing a target printing piece, and the active heat preservation curve is used for indicating the change trend of the temperature of the target position along with time; according to the active heat preservation curve, adjusting a heating device corresponding to the target position so as to change the temperature of the target position according to the trend of the active heat preservation curve; and controlling a heat radiating device in the target forming equipment to actively cool under the condition that the powder surface temperature of the target powder is not more than the powder crystallization temperature corresponding to the tail end of the active heat preservation curve, so as to obtain the target printing piece.
Optionally, determining the active thermal insulation curve corresponding to the target position in the target forming device according to the target type of the target powder includes: obtaining historical molding data corresponding to a target class of a target powder, wherein the historical molding data comprises: historical temperature change data and historical warp deformation data, wherein the historical temperature change data is used for representing the trend of temperature change along with time of a preset position in a historical process of molding target powder of a target class, and the historical warp deformation data is used for representing the warp deformation condition of a molded printing piece after the historical process; determining a target position corresponding to target powder of a target class according to the historical warp deformation data, wherein the target position is a position in the target forming equipment, to which an active heat preservation curve needs to be added, for temperature control; and generating an active heat preservation curve of the target powder at the target position according to the historical temperature change data.
Optionally, determining, according to the historical warp deformation data, a target position corresponding to the target powder of the target class includes: determining the powder surface of the target powder as a target position when the historical warp deformation data indicates that the maximum warp height of the printed piece exceeds a preset threshold value and the warp direction is a first direction; and determining the cylinder body of the target forming equipment as a target position when the historical warp deformation data indicates that the maximum warp height of the printed piece exceeds a preset threshold value and the warp direction is the second direction.
Optionally, determining the active thermal insulation curve corresponding to the target position in the target forming device according to the target type of the target powder further includes: under the condition that the target type corresponding to the target powder exists in the preset active heat preservation curve library, acquiring an active heat preservation curve corresponding to the target type in the preset active heat preservation curve library and a target position corresponding to the active heat preservation curve.
Optionally, the method further comprises: in the process of adjusting a heating device corresponding to a target position according to an active heat preservation curve, acquiring temperature change data of a preset position in target forming equipment in real time, wherein the preset position comprises: a cylinder of the target molding apparatus, a powder surface of the target powder; and sending the temperature change data to a front-end interface for display.
Optionally, after acquiring the temperature change data of the preset position in the target forming device in real time, the method further includes: generating a real-time temperature curve of the cylinder body and a real-time temperature curve of the powder surface according to temperature change data of a preset position; calculating curve fitting degree between the real-time temperature curve of the cylinder body, the real-time temperature curve of the powder surface and the active heat preservation curve; and under the condition that the curve fitting degree exceeds a preset fitting degree threshold value, adjusting the active heat preservation curve so as to enable the curve fitting degree to accord with the preset fitting degree threshold value.
Optionally, controlling the heat sink in the target forming apparatus to actively cool includes: and controlling a heat radiating device in the target forming equipment to actively cool until the temperature of the powder surface center position of the target powder is not more than a preset temperature threshold value.
According to another aspect of the embodiments of the present application, there is also provided a print forming apparatus including: the curve determining module is used for determining an active heat preservation curve corresponding to a target position in target forming equipment according to the target type of target powder, wherein the target powder is a raw material for printing a target printing piece, and the active heat preservation curve is used for indicating the change trend of the temperature of the target position along with time; the active heat preservation module is used for adjusting the heating device corresponding to the target position according to the active heat preservation curve so as to enable the temperature of the target position to change according to the trend of the active heat preservation curve; and the active cooling module is used for controlling the heat dissipation device in the target forming equipment to perform active cooling under the condition that the powder surface temperature of the target powder is not more than the powder crystallization temperature corresponding to the tail end of the active heat preservation curve, so as to obtain the target printing piece.
According to still another aspect of the embodiments of the present application, there is also provided an electronic device, including: the printing device comprises a memory and a processor, wherein the processor is used for running a program stored in the memory, and the program executes a printing part forming method when running.
According to still another aspect of the embodiments of the present application, there is further provided a nonvolatile storage medium, where the nonvolatile storage medium includes a stored computer program, and a device where the nonvolatile storage medium is located executes the print forming method by running the computer program.
In the embodiment of the application, an active heat preservation curve corresponding to a target position in target forming equipment is determined according to a target type of target powder, wherein the target powder is a raw material for printing a target printing piece, and the active heat preservation curve is used for indicating the change trend of the temperature of the target position along with time; according to the active heat preservation curve, adjusting a heating device corresponding to the target position so as to change the temperature of the target position according to the trend of the active heat preservation curve; under the condition that the powder surface temperature of target powder is not more than the powder crystallization temperature corresponding to the tail end of the active heat preservation curve, the heat dissipation device in the target forming equipment is controlled to conduct active cooling to obtain a target printing piece.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:
fig. 1 is a block diagram of a hardware configuration of a computer terminal (or electronic device) for implementing a method of print formation according to an embodiment of the present application;
FIG. 2 is a schematic illustration of a method flow for printing part formation according to an embodiment of the present application;
FIG. 3 is a schematic illustration of the shaping effect of a different class of powders provided in accordance with an embodiment of the present application;
fig. 4 is a schematic diagram of a front end interface in an active thermal insulation process according to an embodiment of the present application;
FIG. 5 is a schematic diagram showing the comparison of effects of a molded article after applying a molding method for a printed article according to an embodiment of the present application;
fig. 6 is a schematic structural view of a printing part forming apparatus according to an embodiment of the present application.
Detailed Description
In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In the related art, the SLS device has two modes for the processing flow after the model sintering is completed:
the first mode is a mode of natural cooling along with the furnace, after the sintering of the model is completed, the equipment stops heating, and an inert environment is kept continuously, so that the model is naturally cooled to a proper fetching temperature in the equipment;
the second way is that after the molding is finished, the molded cylinder body is taken out from the equipment and moved into special cooling equipment, the cooling equipment firstly provides an inert environment required by cooling and secondly provides a function of actively exhausting heat outwards so as to achieve the purpose of actively cooling, namely, actively cooling; although the mode improves the production efficiency of the equipment to a certain extent, the mode has larger requirements on the heat insulation performance of the equipment and the performance of the powder, if the heat insulation performance of the equipment is poor, the temperature difference values of different positions of the molding cylinder body can be increased by active cooling, so that the deformation phenomenon of the molded part is increased, and meanwhile, if the crystallization temperature of the powder is high, the processing temperature interval is narrow, the deformation phenomenon of the molded part can be increased by the mode.
In the two schemes, the first scheme has the important defect of long cooling time, and if full-cylinder printing is performed, the cooling time can be as long as 48 hours, so that the production efficiency is greatly reduced; in the second scheme, active cooling can bring rapid temperature reduction, especially the temperature difference between the surface and the interior of the powder can be rapidly increased, if the crystallization temperature of the powder is high, and the cooling rates of different areas of the cylinder body are inconsistent, the temperature reduction difference caused by the inconsistency can be amplified, and the problems of bending deformation of a formed part and poor mechanical property caused by rapid cooling are easily caused.
In order to solve the problem, the embodiment of the application provides a related solution, which can solve the hidden danger possibly caused by poor equipment heat preservation in active cooling and the problem of low production efficiency caused by natural cooling of a furnace, and is described in detail below.
In accordance with the embodiments of the present application, there is provided a method embodiment of print formation, it being noted that the steps illustrated in the flowchart of the figures may be performed in a computer system, such as a set of computer executable instructions, and that, although a logical order is illustrated in the flowchart, in some cases, the steps illustrated or described may be performed in an order other than that illustrated herein.
The method embodiments provided by the embodiments of the present application may be performed in a mobile terminal, a computer terminal, or similar computing device. Fig. 1 shows a block diagram of a hardware configuration of a computer terminal (or electronic device) for realizing the print forming method. As shown in fig. 1, the computer terminal 10 (or electronic device 10) may include one or more processors 102 (shown as 102a, 102b, … …,102 n) which may include, but are not limited to, a microprocessor MCU or a processing device such as a programmable logic device FPGA, a memory 104 for storing data, and a transmission device 106 for communication functions. In addition, the method may further include: a display, an input/output interface (I/O interface), a Universal Serial BUS (USB) port (which may be included as one of the ports of the BUS), a network interface, a power supply, and/or a camera. It will be appreciated by those of ordinary skill in the art that the configuration shown in fig. 1 is merely illustrative and is not intended to limit the configuration of the electronic device described above. For example, the computer terminal 10 may also include more or fewer components than shown in FIG. 1, or have a different configuration than shown in FIG. 1.
It should be noted that the one or more processors 102 and/or other data processing circuits described above may be referred to generally herein as "data processing circuits. The data processing circuit may be embodied in whole or in part in software, hardware, firmware, or any other combination. Furthermore, the data processing circuitry may be a single stand-alone processing module, or incorporated, in whole or in part, into any of the other elements in the computer terminal 10 (or electronic device). As referred to in the embodiments of the present application, the data processing circuit acts as a processor control (e.g., selection of the path of the variable resistor termination to interface).
The memory 104 may be used to store software programs and modules of application software, such as program instructions/data storage devices corresponding to the print forming method in the embodiment of the present application, and the processor 102 executes the software programs and modules stored in the memory 104, thereby executing various functional applications and data processing, that is, implementing the print forming method described above. Memory 104 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include memory located remotely from the processor 102, which may be connected to the computer terminal 10 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The transmission means 106 is arranged to receive or transmit data via a network. The specific examples of the network described above may include a wireless network provided by a communication provider of the computer terminal 10. In one example, the transmission device 106 includes a network adapter (Network Interface Controller, NIC) that can connect to other network devices through a base station to communicate with the internet. In one example, the transmission device 106 may be a Radio Frequency (RF) module for communicating with the internet wirelessly.
The display may be, for example, a touch screen type Liquid Crystal Display (LCD) that may enable a user to interact with a user interface of the computer terminal 10 (or electronic device).
Under the above operating environment, the embodiment of the application provides a printing part forming method, through optimization in the process flow, the relation among heat dissipation efficiency, model warping deformation and mechanical property is comprehensively considered, an optimal balance point is found, and meanwhile, control variable points of the process flow are subjected to open processing, so that equipment debugging personnel and material developers can conveniently perform optimal matching aiming at the performances of different materials and different equipment. Through analyzing the process of melting and cooling the crystal lattice of the high polymer material, a large amount of heat is released in the process, and if the temperature is not uniformly reduced or is too fast, the crystallinity of the model can be influenced, so that the mechanical property and the appearance accuracy of the formed part are influenced. The printing part forming method in the application embodiment mainly comprises two parts of process flows, namely active heat preservation and active cooling.
The heating function of turning off the printing equipment after printing in the initiative heat preservation process of this application scheme is different with the correlation technique, and the initiative heat preservation process of this application scheme can keep the opening of partial heater continually, and the main reason is that cylinder wall, cylinder bottom and powder surface's heat dissipation rate are inconsistent, if close simultaneously, can cause the inconsistent cooling, the bad phenomenon of shaping deformation, discovers through actual printing that under the same cooling scheme of same equipment, the powder deformation volume of different producer can have great difference, as shown in the following figure 3.
In fig. 3, the PA12 powder print-forming model of the manufacturer a on the left side 1 and the PA12 powder print-forming model of the manufacturer b on the right side 2, it can be seen that the overall quality of the model 1, that is, the degree of warpage of the plane and the verticality of the corners, is obviously better than the model 2, mainly because the crystallization temperatures of the two powders are different, the crystallization temperature of the powder of the manufacturer a is about 135 ℃, the crystallization temperature of the powder of the manufacturer b is about 145 ℃, and the high crystallization temperature is inconsistent with the cooling rates of the different positions of the cylinder body, resulting in obvious effect differences after the two powders are formed.
Starting from the practical phenomenon combined with the cooling process of the polymer, it can be obtained that the cooling deformation in the forming process can be greatly reduced by uniformly cooling the powder as much as possible above the crystallization temperature of the powder, so that a model with better forming precision is obtained, and meanwhile, the model crystallinity can be effectively improved by slowly and uniformly cooling the powder below the crystallization temperature, so that the mechanical property of a formed part is improved. Specifically, fig. 2 is a schematic diagram of a process flow of forming a printed article according to an embodiment of the present application, and as shown in fig. 2, the method includes the following steps:
step S202, determining an active heat preservation curve corresponding to a target position in target forming equipment according to a target type of target powder, wherein the target powder is a raw material for printing a target printing piece, and the active heat preservation curve is used for indicating the change trend of the temperature of the target position along with time; the active thermal insulation curve is a curve for controlling temperature change, which is set for enabling the target printed piece to be above the crystallization temperature of the powder and be cooled as uniformly as possible, so that cooling deformation in the forming process is reduced.
In the technical solution provided in step S202, determining an active heat preservation curve corresponding to a target position in a target forming apparatus according to a target type of a target powder includes the following steps: obtaining historical molding data corresponding to a target class of a target powder, wherein the historical molding data comprises: historical temperature change data and historical warp deformation data, wherein the historical temperature change data is used for representing the trend of temperature change along with time of a preset position in a historical process of molding target powder of a target class, and the historical warp deformation data is used for representing the warp deformation condition of a molded printing piece after the historical process; determining a target position corresponding to target powder of a target class according to the historical warp deformation data, wherein the target position is a position in the target forming equipment, to which an active heat preservation curve needs to be added, for temperature control; and generating an active heat preservation curve of the target powder at the target position according to the historical temperature change data.
In some embodiments of the present application, determining a target location corresponding to a target powder of a target class according to historical warp deformation data includes the steps of: determining the powder surface of the target powder as a target position when the historical warp deformation data indicates that the maximum warp height of the printed piece exceeds a preset threshold value and the warp direction is a first direction; in the case where the historical warp deformation data indicates that the maximum warp height of the printed matter exceeds the preset threshold and the warp direction is the second direction, the cylinder of the target forming apparatus is determined as the target position, the first direction and the second direction being opposite directions.
Specifically, according to the crystallization temperature points of different powder manufacturers (corresponding to the different target classes), different cylinder temperatures are set in the printing process, for example, a square thin plate with the height of 3mm and 120mm is used as a sample piece for warp judgment, after printing is finished, the sample piece is naturally cooled to a state that the model can be taken out, the model is taken out, and then the actual state of the flat model is observed to adjust specific parameters of a temperature curve in real time.
Specifically, the actual state of the flat model includes at least the following three cases:
case one: the plate model has good buckling deformation, the maximum buckling height is lower than 0.1mm, the powder state is good, the deformation generated in the crystallization process is small, the heat preservation performance of the equipment is good, a temperature curve (namely the active heat preservation curve) is not needed to be added, and the powder can be naturally cooled;
and a second case: the warping deformation of the flat plate model is serious, the maximum deformation (namely the maximum warping height) exceeds 0.5mm (namely the preset threshold), and the warping direction is downward (namely the first direction), so that the heat dissipation of the powder surface is quicker, a corresponding temperature curve is required to be added at the surface temperature of the powder (namely the surface of the powder of target powder is determined as the corresponding target position of the powder), a printing test is carried out under the state of the temperature curve, and then dynamic adjustment is carried out according to the warping condition of the model until the maximum warping height is lower than 0.1mm; determining the temperature curve after dynamic adjustment as an active heat preservation curve corresponding to the powder;
and a third case: the warping deformation of the flat plate model is serious, the maximum deformation (namely the maximum warping height) exceeds 0.5mm (namely the preset threshold), and the warping direction is upward (namely the second direction), so that the heat dissipation of the surface of the cylinder body is quicker, a corresponding temperature curve is required to be added at the surface temperature of the cylinder body (namely the cylinder body of the target forming equipment is determined as the target position corresponding to the powder), a printing test is carried out under the state of the temperature curve, and then dynamic adjustment is carried out according to the warping condition of the model until the maximum warping height is lower than 0.1mm; determining the temperature curve after dynamic adjustment as an active heat preservation curve corresponding to the powder;
as an alternative embodiment, determining the active thermal insulation curve corresponding to the target position in the target forming apparatus according to the target class of the target powder further comprises the steps of: under the condition that the target type corresponding to the target powder exists in the preset active heat preservation curve library, acquiring an active heat preservation curve corresponding to the target type in the preset active heat preservation curve library and a target position corresponding to the active heat preservation curve.
In order to ensure the data privacy safety, the functional interface is closed, the active heat preservation curve is associated and matched with consumable materials (target type of target powder), the parameter interface is packed in a configuration file of a program, and only technicians are allowed to modify the parameter interface, so that the equipment privacy degree is increased, and the technical leakage is prevented.
Step S204, according to the active heat preservation curve, adjusting a heating device corresponding to the target position so as to enable the temperature of the target position to change according to the trend of the active heat preservation curve;
in some embodiments of the present application, the method further comprises the steps of: in the process of adjusting a heating device corresponding to a target position according to an active heat preservation curve, acquiring temperature change data of a preset position in target forming equipment in real time, wherein the preset position comprises: a cylinder of the target molding apparatus, a powder surface of the target powder; and sending the temperature change data to a front-end interface for display.
Specifically, fig. 4 is a schematic diagram of a front end interface in an active thermal insulation flow provided according to an embodiment of the present application, as shown in fig. 4, a portion of a dashed box 1 in fig. 4 is an active thermal insulation curve adding function module for a heater at a different position, and a temperature curve set under the module is automatically applied to a later active thermal insulation flow. The dotted line frame 2 is the active heat preservation curve flow of the cylinder powder surface, and the dotted line frame 3 is the active heat preservation flow of the cylinder temperature. By adding active thermal insulation curves of different target positions in the dashed line frame 1, namely temperature curves of two positions of the powder surface and the forming cylinder body in the equipment, the temperature curves can be checked in the parts of the dashed line frames 2 and 3, and in addition, the actual temperature change data of the preset position in the current target forming equipment can be checked in the front end interface.
As an optional implementation manner, after acquiring the temperature change data of the preset position in the target forming equipment in real time, the method further comprises the following steps: generating a real-time temperature curve of the cylinder body and a real-time temperature curve of the powder surface according to temperature change data of a preset position; calculating curve fitting degree between the real-time temperature curve of the cylinder body, the real-time temperature curve of the powder surface and the active heat preservation curve; and under the condition that the curve fitting degree exceeds a preset fitting degree threshold value, adjusting the active heat preservation curve so as to enable the curve fitting degree to accord with the preset fitting degree threshold value.
As an alternative embodiment, when the active thermal insulation curve is added, the active thermal insulation curves of the powder surface of the target powder and two target positions of the cylinder body of the target forming equipment can be simultaneously added,
in general, the deformation direction of the forming part is single, either upward deformation or downward deformation is performed, so that the addition position of the active heat-preserving curve is single, but the situation that the forming part has small deformation but poor mechanical property due to the fact that heat dissipation in all directions is relatively quick and uniform exists, and in this case, a user can add active heat-preserving curves at two positions at the same time to create a slow and uniform heat-radiating environment so as to ensure that the mechanical property of the forming part reaches the standard.
And S206, controlling a heat dissipation device in the target forming equipment to actively cool under the condition that the powder surface temperature of the target powder is not more than the powder crystallization temperature corresponding to the tail end of the active heat preservation curve, so as to obtain the target printing piece.
Because the actual onset crystallization temperature of the target powder is generally lower than the theoretical crystallization temperature, the final temperature of the active soak (i.e., the powder crystallization temperature at the end of the active soak curve described above) is generally lower than the theoretical crystallization temperature. After the equipment printing flow is finished, the equipment printing flow is executed according to the temperature control curve of active heat preservation, and after the execution is finished, the second stage and the active cooling stage can be carried out.
In some embodiments of the present application, controlling the heat sink in the target forming apparatus for active cooling includes the steps of: and controlling a heat radiating device in the target forming equipment to actively cool until the temperature of the powder surface center position of the target powder is not more than a preset temperature threshold value.
Specifically, after the active heat preservation process is finished, the temperature of the powder is basically lower than the crystallization temperature of the powder, and at the moment, active cooling is performed, so that the influence on the warping deformation and performance of the model is small, and the active cooling process can be performed. The active cooling process occurs in a cooling station or a post-treatment station matched with the equipment, the purpose of rapid cooling is achieved by maintaining an inert environment and externally extracting heat, and after the central temperature (namely the temperature of the central position of the powder surface of the target powder) is reduced to below 60 ℃ (namely the preset temperature threshold), the powder cleaning treatment can be carried out on the model.
The effect of the formed part (namely the target printed part) obtained through the scheme is shown in fig. 5, a No. 1 model and a No. 2 model in fig. 5 are formed by printing PA12 powder of a manufacturer, the No. 1 model adopts a first mode in the related technology and is naturally cooled along with a furnace, the No. 2 model adopts the method for forming the printed part of the scheme, active heat preservation and active cooling are carried out, the deformation of the No. 2 model is obviously improved compared with that of the No. 1 model, the deformation of corners of the No. 1 model is also reduced to 0.05mm by measuring with a feeler gauge, and the use cost of powder consumable of equipment is greatly reduced through the technical scheme.
In addition to the improvement of the deformation, the performance of the formed part, including the improvement of the single performance of the formed part and the performance improvement in the whole width surface are obviously improved. Specifically, table 1 is the test mechanical property data of the molded part after the process flow of the scheme of the application, and table 2 is the test mechanical property data of the molded part after the process flow of furnace cooling in the related art, and specific data are shown in the following tables 1 and 2;
table 1 the process flow test mechanical properties data sheet of the present application
Table 2 table of mechanical properties for furnace cooling process test in related art
As can be seen from the data in tables 1 and 2, the process flow of the application has obvious improvement on the mechanical properties of the molded part, including the tensile strength and the elongation at break of a single model and the uniformity of the mechanical property distribution of the molded part in the whole molded breadth.
In conclusion, the process flow provided by the invention has an obvious improvement and inhibition effect on the printing warp of PA12 powder in SLS, and has an obvious improvement on the stability of mechanical properties of a formed part and the uniformity in the breadth.
The scheme can effectively reduce the occurrence of buckling deformation of the formed part; the comprehensive mechanical property of the formed part is improved; the compatibility of equipment to powder of different factories is increased, the consumable use cost of the equipment is reduced, and the range of selectable consumable of the equipment is increased; the production efficiency of continuous printing is improved to a certain extent.
Through the steps, through adopting the two flow steps of active heat preservation and active cooling, the purposes of effectively reducing the buckling deformation phenomenon of the formed part and improving the comprehensive mechanical property of the formed part while ensuring the production efficiency are achieved, and further the technical problem that the formed part is easy to buckle after being formed due to the fact that a direct cooling mode is adopted in the cooling and solidifying process of the printed part in the related technology is solved.
According to an embodiment of the present application, there is also provided an embodiment of a print forming apparatus. Fig. 6 is a schematic structural view of a printing part forming apparatus according to an embodiment of the present application. As shown in fig. 6, the apparatus includes:
the curve determining module 60 is configured to determine an active thermal insulation curve corresponding to a target position in the target forming apparatus according to a target type of the target powder, where the target powder is a raw material for printing a target print, and the active thermal insulation curve is used to indicate a trend of temperature of the target position over time;
the active heat preservation module 62 is used for adjusting the heating device corresponding to the target position according to the active heat preservation curve so as to change the temperature of the target position according to the trend of the active heat preservation curve;
and the active cooling module 64 is used for controlling the heat dissipation device in the target forming equipment to actively cool under the condition that the powder surface temperature of the target powder is not greater than the powder crystallization temperature corresponding to the tail end of the active heat preservation curve, so as to obtain the target printed piece.
Note that each module in the print forming apparatus may be a program module (for example, a set of program instructions for realizing a specific function), or may be a hardware module, and the latter may be expressed in the following form, but is not limited thereto: the expression forms of the modules are all a processor, or the functions of the modules are realized by one processor.
It should be noted that, the printing piece forming device provided in the present embodiment may be used to execute the printing piece forming method shown in fig. 2, so the explanation of the printing piece forming method is also applicable to the embodiment of the present application, and is not repeated here.
The embodiment of the application also provides a nonvolatile storage medium, which comprises a stored computer program, wherein equipment where the nonvolatile storage medium is located executes the following printing piece forming method by running the computer program: determining an active heat preservation curve corresponding to a target position in target forming equipment according to a target type of target powder, wherein the target powder is a raw material for printing a target printing piece, and the active heat preservation curve is used for indicating the change trend of the temperature of the target position along with time; according to the active heat preservation curve, adjusting a heating device corresponding to the target position so as to change the temperature of the target position according to the trend of the active heat preservation curve; and controlling a heat radiating device in the target forming equipment to actively cool under the condition that the powder surface temperature of the target powder is not more than the powder crystallization temperature corresponding to the tail end of the active heat preservation curve, so as to obtain the target printing piece.
The foregoing embodiment numbers of the present application are merely for describing, and do not represent advantages or disadvantages of the embodiments.
In the foregoing embodiments of the present application, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed technology content may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of the units, for example, may be a logic function division, and may be implemented in another manner, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The foregoing is merely a preferred embodiment of the present application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present application and are intended to be comprehended within the scope of the present application.
Claims (10)
1. A print forming method, comprising:
determining an active heat preservation curve corresponding to a target position in target forming equipment according to a target type of target powder, wherein the target powder is a raw material for printing a target printing piece, and the active heat preservation curve is used for indicating the change trend of the temperature of the target position along with time;
according to the active heat preservation curve, adjusting a heating device corresponding to the target position so as to change the temperature of the target position according to the trend of the active heat preservation curve;
and controlling a heat radiating device in the target forming equipment to actively cool under the condition that the powder surface temperature of the target powder is not more than the powder crystallization temperature corresponding to the tail end of the active heat preservation curve, so as to obtain the target printing piece.
2. The method of claim 1, wherein determining an active thermal profile corresponding to a target location in a target forming apparatus according to a target class of target powder comprises:
obtaining historical molding data corresponding to a target class of the target powder, wherein the historical molding data comprises: historical temperature change data and historical warp deformation data, wherein the historical temperature change data are used for representing the trend of temperature change of a preset position along with time in a historical process of molding target powder of the target class, and the historical warp deformation data are used for representing the warp deformation condition of a molded printing piece after the historical process;
determining a target position corresponding to the target powder of the target category according to the historical warp deformation data, wherein the target position is a position in the target forming equipment, to which the active heat preservation curve is added for temperature control;
and generating the active heat preservation curve of the target powder at the target position according to the historical temperature change data.
3. The printed matter forming method of claim 2, wherein determining a target position corresponding to the target powder of the target class based on the historical warp deformation data comprises:
determining a powder surface of the target powder as the target position when the historical warp deformation data indicates that the maximum warp height of the printed piece exceeds a preset threshold value and the warp direction is a first direction;
and determining a cylinder body of the target forming equipment as the target position under the condition that the historical warp deformation data indicates that the maximum warp height of the printed piece exceeds a preset threshold value and the warp direction is a second direction.
4. The method of claim 1, wherein determining an active thermal profile corresponding to a target location in a target forming apparatus according to a target class of target powder further comprises:
and under the condition that a target category corresponding to the target powder exists in a preset active heat preservation curve library, acquiring the active heat preservation curve corresponding to the target category in the preset active heat preservation curve library and the target position corresponding to the active heat preservation curve.
5. The print forming method according to claim 1, characterized in that the method further comprises:
and acquiring temperature change data of a preset position in the target forming equipment in real time in the process of adjusting the heating device corresponding to the target position according to the active heat preservation curve, wherein the preset position comprises: a cylinder of the target molding apparatus, a powder surface of the target powder;
and sending the temperature change data to a front-end interface for display.
6. The printed matter forming method of claim 5, further comprising, after acquiring temperature change data of a preset location in the target forming apparatus in real time:
generating a real-time temperature curve of the cylinder body and a real-time temperature curve of the powder surface according to the temperature change data of the preset position;
calculating curve fitting degrees between the cylinder body real-time temperature curve, the powder surface real-time temperature curve and the active heat preservation curve;
and under the condition that the curve fitting degree exceeds a preset fitting degree threshold value, adjusting the active heat preservation curve so as to enable the curve fitting degree to accord with the preset fitting degree threshold value.
7. The printed matter forming method of claim 1, wherein controlling the heat sink in the target forming apparatus to actively cool comprises:
and controlling a heat radiating device in the target forming equipment to actively cool until the temperature of the powder surface center position of the target powder is not more than a preset temperature threshold value.
8. A print forming apparatus, comprising:
the curve determining module is used for determining an active heat preservation curve corresponding to a target position in target forming equipment according to a target type of target powder, wherein the target powder is a raw material for printing a target printing piece, and the active heat preservation curve is used for indicating the change trend of the temperature of the target position along with time;
the active heat preservation module is used for adjusting the heating device corresponding to the target position according to the active heat preservation curve so as to enable the temperature of the target position to change according to the trend of the active heat preservation curve;
and the active cooling module is used for controlling the heat dissipation device in the target forming equipment to actively cool under the condition that the powder surface temperature of the target powder is not more than the powder crystallization temperature corresponding to the tail end of the active heat preservation curve, so as to obtain the target printing piece.
9. An electronic device, comprising: a memory and a processor for executing a program stored in the memory, wherein the program is executed to perform the print forming method according to any one of claims 1 to 7.
10. A non-volatile storage medium, characterized in that the non-volatile storage medium comprises a stored computer program, wherein the device in which the non-volatile storage medium is located performs the print forming method according to any one of claims 1 to 7 by running the computer program.
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Citations (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013170271A (en) * | 2012-02-17 | 2013-09-02 | Nippon Steel & Sumitomo Metal Corp | Titanium alloy member deformed into same direction as working direction with heat treatment, and method for manufacturing the same |
| CN103640218A (en) * | 2013-12-04 | 2014-03-19 | 北京太尔时代科技有限公司 | Working platform for 3D (three dimensional) printer |
| US20150314532A1 (en) * | 2014-05-01 | 2015-11-05 | BlueBox 3D, LLC | Increased inter-layer bonding in 3d printing |
| US20150352794A1 (en) * | 2014-06-05 | 2015-12-10 | Commonwealth Scientific And Industrial Research Organisation | Distortion prediction and minimisation in additive manufacturing |
| US20160096326A1 (en) * | 2014-10-03 | 2016-04-07 | Tyco Electronics Corporation | Selective zone temperature control build plate |
| CN105483336A (en) * | 2015-11-29 | 2016-04-13 | 郑臣钏 | Metal piece heat treatment technology |
| CN206718478U (en) * | 2017-04-27 | 2017-12-08 | 四川建筑职业技术学院 | A kind of 3D printer model cooling device |
| CN108284596A (en) * | 2018-02-09 | 2018-07-17 | 武汉萨普科技股份有限公司 | A kind of powder cooling device |
| CN108527868A (en) * | 2017-12-04 | 2018-09-14 | 东莞远铸智能科技有限公司 | The heat treatment method of 3D printing workpiece |
| US20180304537A1 (en) * | 2015-10-15 | 2018-10-25 | The Regents Of The University Of California | Systems, apparatus and methods for cryogenic 3d printing |
| CN109049712A (en) * | 2018-09-10 | 2018-12-21 | 北京易加三维科技有限公司 | 3D printing part after-treatment device and its method |
| US20190054701A1 (en) * | 2017-06-28 | 2019-02-21 | Jeol Ltd. | Three-Dimensional Additive Manufacturing Device |
| CN109614651A (en) * | 2018-11-12 | 2019-04-12 | 王诚 | A kind of high-precision evaluation method of moulding machined parameters and deformation relationship |
| US20190210286A1 (en) * | 2016-08-22 | 2019-07-11 | Stratasys, Inc. | Methods of printing 3d parts with localized thermal cycling |
| CN110315757A (en) * | 2018-03-28 | 2019-10-11 | 昆山市工研院智能制造技术有限公司 | A kind of workpiece heat insulation system of fusion sediment forming 3D printer |
| CN111070689A (en) * | 2019-12-13 | 2020-04-28 | 华中科技大学 | Method for controlling deformation of sample based on 3D printing technology |
| US20200130267A1 (en) * | 2018-12-29 | 2020-04-30 | Huazhong University Of Science And Technology | Method for controlling deformation and precision of parts in parallel during additive manufacturing process |
| CN113182644A (en) * | 2021-03-16 | 2021-07-30 | 北京工业大学 | Fixture for relieving deformation of electric arc additive manufacturing component and process method |
| CN113211793A (en) * | 2021-06-02 | 2021-08-06 | 青岛科技大学 | Anti-warping device and anti-warping method |
| CN113414411A (en) * | 2021-06-18 | 2021-09-21 | 武汉大学 | Method for regulating temperature gradient and cooling rate in real time in additive manufacturing process |
| CN113591300A (en) * | 2021-07-29 | 2021-11-02 | 深圳市创想三维科技股份有限公司 | 3D printing file generation method and device, computer equipment and storage medium |
| US20220080666A1 (en) * | 2019-05-30 | 2022-03-17 | Hewlett-Packard Development Company, L.P. | Cooling process for three-dimensional printing system |
| CN114193767A (en) * | 2021-12-12 | 2022-03-18 | 华中科技大学鄂州工业技术研究院 | Temperature control hot bed and control method thereof |
| CN216632603U (en) * | 2021-12-10 | 2022-05-31 | 常州海勒汽车部件有限公司 | A3D printing device for automobile parts |
| CN217990941U (en) * | 2022-05-06 | 2022-12-09 | 航宇新材料智能制造研究院(山西)有限公司 | Laser vibration material disk destressing device |
-
2023
- 2023-04-14 CN CN202310399706.9A patent/CN116100811B/en active Active
Patent Citations (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013170271A (en) * | 2012-02-17 | 2013-09-02 | Nippon Steel & Sumitomo Metal Corp | Titanium alloy member deformed into same direction as working direction with heat treatment, and method for manufacturing the same |
| CN103640218A (en) * | 2013-12-04 | 2014-03-19 | 北京太尔时代科技有限公司 | Working platform for 3D (three dimensional) printer |
| US20150314532A1 (en) * | 2014-05-01 | 2015-11-05 | BlueBox 3D, LLC | Increased inter-layer bonding in 3d printing |
| US20150352794A1 (en) * | 2014-06-05 | 2015-12-10 | Commonwealth Scientific And Industrial Research Organisation | Distortion prediction and minimisation in additive manufacturing |
| US20160096326A1 (en) * | 2014-10-03 | 2016-04-07 | Tyco Electronics Corporation | Selective zone temperature control build plate |
| CN105666866A (en) * | 2014-10-03 | 2016-06-15 | 泰科电子公司 | Selective zone temperature control build plate |
| US20180304537A1 (en) * | 2015-10-15 | 2018-10-25 | The Regents Of The University Of California | Systems, apparatus and methods for cryogenic 3d printing |
| CN105483336A (en) * | 2015-11-29 | 2016-04-13 | 郑臣钏 | Metal piece heat treatment technology |
| US20190210286A1 (en) * | 2016-08-22 | 2019-07-11 | Stratasys, Inc. | Methods of printing 3d parts with localized thermal cycling |
| CN206718478U (en) * | 2017-04-27 | 2017-12-08 | 四川建筑职业技术学院 | A kind of 3D printer model cooling device |
| US20190054701A1 (en) * | 2017-06-28 | 2019-02-21 | Jeol Ltd. | Three-Dimensional Additive Manufacturing Device |
| CN108527868A (en) * | 2017-12-04 | 2018-09-14 | 东莞远铸智能科技有限公司 | The heat treatment method of 3D printing workpiece |
| CN108284596A (en) * | 2018-02-09 | 2018-07-17 | 武汉萨普科技股份有限公司 | A kind of powder cooling device |
| CN110315757A (en) * | 2018-03-28 | 2019-10-11 | 昆山市工研院智能制造技术有限公司 | A kind of workpiece heat insulation system of fusion sediment forming 3D printer |
| CN109049712A (en) * | 2018-09-10 | 2018-12-21 | 北京易加三维科技有限公司 | 3D printing part after-treatment device and its method |
| CN109614651A (en) * | 2018-11-12 | 2019-04-12 | 王诚 | A kind of high-precision evaluation method of moulding machined parameters and deformation relationship |
| US20200130267A1 (en) * | 2018-12-29 | 2020-04-30 | Huazhong University Of Science And Technology | Method for controlling deformation and precision of parts in parallel during additive manufacturing process |
| US20220080666A1 (en) * | 2019-05-30 | 2022-03-17 | Hewlett-Packard Development Company, L.P. | Cooling process for three-dimensional printing system |
| CN111070689A (en) * | 2019-12-13 | 2020-04-28 | 华中科技大学 | Method for controlling deformation of sample based on 3D printing technology |
| CN113182644A (en) * | 2021-03-16 | 2021-07-30 | 北京工业大学 | Fixture for relieving deformation of electric arc additive manufacturing component and process method |
| CN113211793A (en) * | 2021-06-02 | 2021-08-06 | 青岛科技大学 | Anti-warping device and anti-warping method |
| CN113414411A (en) * | 2021-06-18 | 2021-09-21 | 武汉大学 | Method for regulating temperature gradient and cooling rate in real time in additive manufacturing process |
| CN113591300A (en) * | 2021-07-29 | 2021-11-02 | 深圳市创想三维科技股份有限公司 | 3D printing file generation method and device, computer equipment and storage medium |
| CN216632603U (en) * | 2021-12-10 | 2022-05-31 | 常州海勒汽车部件有限公司 | A3D printing device for automobile parts |
| CN114193767A (en) * | 2021-12-12 | 2022-03-18 | 华中科技大学鄂州工业技术研究院 | Temperature control hot bed and control method thereof |
| CN217990941U (en) * | 2022-05-06 | 2022-12-09 | 航宇新材料智能制造研究院(山西)有限公司 | Laser vibration material disk destressing device |
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