WO2022110255A1 - Procédé et système de traitement de données de tranche pour modèle de relief, et procédé d'impression 3d - Google Patents

Procédé et système de traitement de données de tranche pour modèle de relief, et procédé d'impression 3d Download PDF

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Publication number
WO2022110255A1
WO2022110255A1 PCT/CN2020/133043 CN2020133043W WO2022110255A1 WO 2022110255 A1 WO2022110255 A1 WO 2022110255A1 CN 2020133043 W CN2020133043 W CN 2020133043W WO 2022110255 A1 WO2022110255 A1 WO 2022110255A1
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Prior art keywords
slice
relief model
relief
model
layer
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PCT/CN2020/133043
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English (en)
Chinese (zh)
Inventor
马河祥
刘震
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苏州铼赛智能科技有限公司
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Publication of WO2022110255A1 publication Critical patent/WO2022110255A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B3/00—Artist's machines or apparatus equipped with tools or work holders moving or able to be controlled substantially two- dimensionally for carving, engraving, or guilloching shallow ornamenting or markings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B3/00—Artist's machines or apparatus equipped with tools or work holders moving or able to be controlled substantially two- dimensionally for carving, engraving, or guilloching shallow ornamenting or markings
    • B44B3/06—Accessories, e.g. tool or work holders

Definitions

  • the present application relates to the technical field of 3D printing, in particular to a method, system and 3D printing method for processing slice data of relief models.
  • the traditional embossing process is to engrave patterns or characters on the surface of materials such as stone.
  • the engraving of complex patterns often takes a long time and requires high skills of the operator.
  • Common reliefs include seals, carving crafts, etc.
  • the purpose of the present application is to provide a method, system and 3D printing method for slicing data of a relief model, so as to overcome the technical problem of insufficient strength of the relief structure in the above-mentioned related art.
  • a first aspect disclosed in the present application provides a method for processing slice data of a relief model, comprising the following steps: obtaining a two-dimensional pattern corresponding to the relief model; and based on the outline of the two-dimensional pattern, generating a relief model; wherein, the outer contour of each target area in the relief model has a transition slope in the Z direction; and slicing the relief model to obtain slice data corresponding to each slice layer.
  • a second aspect disclosed in the present application provides a method for processing slice data of a relief model, including the following steps: acquiring a two-dimensional pattern corresponding to the relief model; The slice layer is assigned to obtain slice data corresponding to each slice layer; wherein, after the multiple slice layers are superimposed in the Z direction, the relief model can be formed, and the outer contour of the target area in the relief model has a transition in the Z direction bevel.
  • a third aspect disclosed in the present application provides a 3D printing method for a relief model, comprising the following steps: acquiring printing data of the relief model; wherein the printing data includes the first aspect disclosed in the present application or the disclosure in the present application
  • the slice data obtained by the slice data processing method of the relief model described in the second aspect; based on the print data, make the 3D printing device print each slice layer of the relief model layer by layer, so as to obtain the slice layer corresponding to each slice layer.
  • the solidified layers are accumulated layer by layer to obtain a 3D component corresponding to the relief model; wherein, the outer contour of each target area in the 3D component has a transition slope in the Z direction.
  • a fourth aspect disclosed in the present application provides a slicing data processing system for a relief model, including: a first communication module for acquiring a two-dimensional pattern corresponding to the relief model; a first processing module for The contour line generates a relief model, wherein the outer contour of each target area in the relief model has a transition slope in the Z direction; and the relief model is sliced to obtain slice data corresponding to each slice layer.
  • a fifth aspect disclosed in the present application provides a slicing data processing system for a relief model, including: a second communication module for acquiring a two-dimensional pattern corresponding to the relief model; a second processing module for contour line, generating a plurality of slice layers, and assigning values to each slice layer to obtain slice data corresponding to each slice layer; wherein, the plurality of slice layers can form the relief model after being superimposed in the Z direction, and the relief
  • the outer contour of the target area in the model has a transition slope in the Z direction.
  • a sixth aspect disclosed in the present application provides a 3D component obtained by the 3D printing method of a relief model according to the fifth aspect disclosed in the present application, wherein the outer contour of each target area in the 3D component has a transition slope in the Z direction .
  • a seventh aspect disclosed in the present application provides a computer-readable storage medium, where the computer-readable storage medium includes a stored computer program, wherein when the computer program is run by a processor, a device on which the storage medium is located is controlled to execute this program.
  • the method for processing slice data of a relief model according to the first aspect disclosed in the application or the second aspect disclosed in the present application.
  • the present application can generate a three-dimensional model through the acquired two-dimensional pattern and slice it to generate slice data, or directly generate slice data through the acquired two-dimensional pattern, and make the outline in the two-dimensional pattern form a three-dimensional relief model. It has a transition slope in the Z direction, so that the printed relief can avoid damage due to insufficient deflection when the surface is under pressure.
  • FIG. 1 is a schematic structural diagram of an embodiment of a method for processing slice data of a relief model in the present application.
  • FIG. 2 is a schematic diagram of another embodiment of the slice data processing method in the present application.
  • Figure 3a shows a schematic diagram of the two-dimensional pattern in the present application in one embodiment.
  • Fig. 3b is a schematic diagram showing the area of the region defined by each contour line in the two-dimensional pattern of Fig. 3a.
  • FIG. 3c shows a schematic diagram of generating each slice layer based on the contour lines of the two-dimensional pattern in one embodiment of the present application.
  • 4a and 4b are schematic diagrams of the two-dimensional pattern in the present application in another embodiment.
  • 5a-5c are schematic diagrams showing an embodiment of generating a relief model by a two-dimensional pattern in the present application.
  • FIG. 5d shows a schematic diagram of adding a base model to the relief model of FIG. 5c of the present application in one embodiment.
  • 6a-6d are schematic diagrams illustrating a process of generating a relief model in the present application in one embodiment.
  • FIG. 7 shows a schematic diagram of the two-dimensional pattern in the present application in yet another embodiment.
  • FIG. 8 shows a schematic diagram of functional modules of the slice data processing system in the present application in an embodiment.
  • FIG. 9 shows a schematic diagram of functional modules of the slice data processing system in the present application in another embodiment.
  • first, second, etc. are used herein to describe various elements, information or parameters, these elements or parameters should not be limited by these terms. These terms are only used to distinguish one element or parameter from another element or parameter.
  • a first communications module could be termed a second communications module, and similarly, a second communications module could be termed a first communications module, without departing from the scope of the various described embodiments.
  • the first communication module and the second communication module are both describing a communication module, but unless the context clearly indicates otherwise, they are not the same communication module.
  • the word "if” as used herein can be interpreted as "at the time of" or "when".
  • A, B or C or “A, B and/or C” means “any of the following: A; B; C; A and B; A and C; B and C; A, B and C” . Exceptions to this definition arise only when combinations of elements, functions, steps, or operations are inherently mutually exclusive in some way.
  • Relief is a kind of carving, by carving out the image to be shaped on a plane, so that it is separated from the plane of the original material.
  • the embossing process in the prior art cannot meet the requirements of product strength, and the protruding parts of the embossing, especially the finer parts, are prone to insufficient deflection and breakage, resulting in product damage. No further use is possible.
  • the relief made by laser engraving technology cannot precisely control the incident angle of the laser at each engraving position, so the laser almost completes the engraving on the relief surface at a vertical angle, the force area of the fine part is small, and the pressure when pressed Large and easily damaged.
  • the present application provides a method for processing slice data of a relief model in order to solve the technical problem of insufficient strength of the relief structure, and the method for processing slice data of the relief model can be performed by a slice data processing system of the relief model.
  • the slice data processing system is implemented by software and hardware in computer equipment.
  • the computer device is communicatively connected to the 3D printing device or integrated on the 3D printing device, so that the processed slice data can be provided to the 3D printing device to perform the printing task.
  • the computer device includes at least: memory, one or more processors, I/O interfaces, network interfaces, input structures, and the like. wherein the memory is used to store at least one program.
  • the memory may include high speed random access memory, and may also include nonvolatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other nonvolatile solid state storage devices.
  • the memory may also include memory remote from the one or more processors, such as network-attached memory accessed via RF circuitry or external ports and a communication network, which may be the Internet, one or more Intranet, Local Area Network (LAN), Wide Area Network (WLAN), Storage Area Network (SAN), etc., or a suitable combination thereof.
  • LAN Local Area Network
  • WLAN Wide Area Network
  • SAN Storage Area Network
  • a memory controller controls access to memory by other components of the device, such as the CPU and peripheral interfaces.
  • the memory optionally includes high speed random access memory, and optionally also includes nonvolatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other nonvolatile solid state memory devices. Access to memory is optionally controlled by a memory controller by other components of the device such as the CPU and peripheral interfaces.
  • the one or more processors are operably coupled with a network interface to communicatively couple the computing device to the network.
  • a network interface may connect the computing device to a local area network (eg, a LAN), and/or a wide area network (eg, a WAN).
  • the processor is also operably coupled to an I/O port that can enable the computing device to interact with various other electronic devices and an input structure that can enable a user to interact with the computing device.
  • the input structures may include buttons, keyboards, mice, trackpads, and the like.
  • electronic displays may include touch components that facilitate user input by detecting the occurrence and/or location of an object touching its screen.
  • the slicing data processing system can also be implemented by an application program (APP) loaded on a smart terminal. After acquiring the two-dimensional pattern, the smart terminal generates slicing data and sends it to 3D printing equipment.
  • APP application program
  • the smart terminal is, for example, a portable or wearable electronic device including but not limited to a smart phone, a tablet computer, a smart watch, smart glasses, a personal digital assistant (PDA), etc.
  • An electronic device is only one example of an application, and the components of the device may have more or fewer components than shown, or have different component configurations.
  • the various components of the drawn illustrations may be implemented in hardware, software, or a combination of hardware and software, including one or more signal processing and/or application specific integrated circuits.
  • the intelligent terminal includes memory, memory controller, one or more processors (CPU), peripheral interface, RF circuit, audio circuit, speaker, microphone, input/output (I/O) subsystem, touch screen, other outputs or control devices, and external ports.
  • the smart terminal supports various applications, such as one or more of the following: drawing applications, rendering applications, word processing applications, website creation applications, disk editing applications, spreadsheet applications, Gaming apps, phone apps, video conferencing apps, email apps, instant messaging apps, fitness support apps, photo management apps, digital camera apps, digital video camera apps, web browsing apps, digital Music player applications and/or digital video player applications.
  • applications such as one or more of the following: drawing applications, rendering applications, word processing applications, website creation applications, disk editing applications, spreadsheet applications, Gaming apps, phone apps, video conferencing apps, email apps, instant messaging apps, fitness support apps, photo management apps, digital camera apps, digital video camera apps, web browsing apps, digital Music player applications and/or digital video player applications.
  • the slice data processing system may generate slice data of the relief model corresponding to the two-dimensional pattern based on the acquired two-dimensional pattern, so as to provide the slice data to the 3D printing device for printing.
  • the 3D printing is a kind of rapid prototyping technology, which is a technology of constructing objects by layer-by-layer printing based on digital model files and using adhesive materials such as powdered metal or plastic.
  • the digital model file is first processed to import the 3D component model to be printed into the 3D printing device.
  • the 3D component model includes, but is not limited to, a 3D component model based on a CAD component, for example, an STL file, and the control device performs layout and slice processing on the imported STL file.
  • the 3D component model can be imported into the control device via a data interface or a network interface.
  • the solid part in the imported 3D component model can be in any shape, for example, the solid part includes a tooth shape, a spherical shape, a house shape, a tooth shape, or any shape with a preset structure, and the like.
  • the preset structure includes, but is not limited to, at least one of the following: a cavity structure, a structure including a sudden change in shape, and a structure with preset requirements for contour accuracy in the solid part, and the like.
  • 3D printing equipment prints 3D components by exposing and curing light-cured materials layer by layer and accumulating each cured layer.
  • FIG. 1 is a schematic structural diagram of an embodiment of the method for processing slice data of a relief model in the present application.
  • step S110 a two-dimensional pattern corresponding to the relief model is obtained.
  • the relief is a semi-stereoscopic sculpture, which presents images through a concave-convex surface, and the relief model is the model corresponding to the relief in the 3D software.
  • the image presented by the embossed concave-convex surface is a two-dimensional pattern.
  • the two-dimensional pattern corresponds to the pattern covered by the seal. Therefore, in order to manufacture the desired relief, the two-dimensional pattern corresponding to the relief needs to be obtained first.
  • the two-dimensional pattern may be a bitmap in formats such as jpg and psd, or may be a vector diagram in formats such as svg and dxf.
  • the two-dimensional pattern is a vector diagram.
  • the slicing data processing system obtains a vector image directly, and in other cases, the slicing data processing system obtains a bitmap.
  • the bitmap can be converted into a vector image by format conversion.
  • the two-dimensional pattern can also be binarized to determine the raised and recessed portions of the relief.
  • the area of the black part can be configured as a convex part
  • the area of the white part can be configured as a concave part, so as to print a relief corresponding to the two-dimensional pattern.
  • step S120 a relief model is generated based on the contour lines of the two-dimensional pattern; wherein, the outer contour of each target area in the relief model has a transition slope in the Z direction.
  • the outline of the two-dimensional pattern may be determined based on each closed curve in the two-dimensional pattern. It should be understood that a curve has two endpoints, and when the two endpoints coincide, a closed curve is formed.
  • FIG. 3a shows a schematic diagram of the two-dimensional pattern of the present application in one embodiment.
  • the two-dimensional image 30 includes a closed curve 301, a closed curve 302 and a closed curve 303, the relief model can be generated according to these closed curves, and the specific generation method will be described in detail later.
  • the two-dimensional pattern may not include closed curves, or not all lines are closed curves.
  • the outline of the two-dimensional pattern can also be determined according to the non-closed lines in the two-dimensional pattern.
  • FIG. 4a and FIG. 4b are schematic diagrams of the two-dimensional pattern in the present application in another embodiment.
  • the edge lines formed based on the width of the curve and the two ends of the curve can form contour lines, as shown in FIG. 4b , based on the edge lines formed by the line widths of the non-closed line 401 and the non-closed line 402 in FIG. 4a and the position of the end point of the curve, the contour line 401' and the contour line 402' are generated.
  • contour lines can also be generated based on both closed curves and non-closed lines according to the embodiment shown in FIG. 3a in combination with the embodiments of FIG. 4a and FIG. 4b.
  • the structural parts corresponding to some regions may suffer from insufficient stress due to too small areas after printing.
  • the area formed by the closed curve 303 is relatively small, and the part corresponding to this area may be broken due to insufficient stress after the relief is formed. Therefore, these regions can be processed to increase their structural stress intensity, i.e. target regions in a 2D image.
  • the target area may be determined based on the area of the area defined by each contour line. It should be understood that the area of the area defined based on each contour line includes the area of the inner area formed by the line of each contour line as a boundary. Please refer to FIG. 3b, which is a schematic diagram of the area of the area defined by each contour line in the two-dimensional pattern of FIG. 3a.
  • the area of the area defined by the closed curve 301 includes the line of the closed curve 301 as the boundary between the closed curve
  • the area inside the closed curve 301 is the area of the shaded part inside the closed curve 301 ; similarly, the area defined by the closed curve 302 and the closed curve 303 includes the area of the shadow part inside the closed curve 302 and the closed curve 303 .
  • an area threshold may be predetermined, and then the area of the area defined by each contour line is compared with the area threshold, and the area smaller than the area threshold is used as the target area.
  • the area formed by the contour lines of the non-closed lines can also be used as the target area, for example, the area of the area formed by the contour lines of the non-closed lines is the same as the The area threshold is compared to determine whether it is the target area.
  • the area threshold is used as an example in this embodiment, the area threshold is only an example for determining the condition of the target area in this application. In practical applications, it can also be determined by other parameters, including but not limited to: length Threshold, width threshold, aspect ratio threshold, etc. For example, in some embodiments, although the area of the slender shape may reach the threshold, there may also be insufficient deflection, so the length of the shape defined by the contour line can also be used. Aspect ratio to define the target area.
  • all closed curves and/or the regions defined by the closed curves are used as target regions.
  • the outer contour of the corresponding target area in the relief model is designed to have a transitional slope in the Z direction, so as to enhance the printing of real objects. post-structural stress.
  • the Z direction is the thickness (height) direction of the relief model.
  • the outer contours of each area in the relief model include contour lines corresponding to the two-dimensional patterns. It should be understood that after the two-dimensional pattern generates a three-dimensional relief model, the contour lines originally located in the two-dimensional pattern will form the outer contour shape of the relief model. For example, after generating a cube for a two-dimensional square, the contour lines formed by the four right angles of the square will form the angular outer contour shape of the cube.
  • the relief model has a top surface and a bottom surface in a two-dimensional pattern, and the area of the top surface is smaller than that of the bottom surface, thereby forming a transition slope between the top surface and the bottom surface.
  • the transition slope can be gradually gradual, that is, the area of the top surface gradually transitions from the area of the bottom surface to the slope shape of the area of the bottom surface; it can also be non-gradually gradual, for example, from the top surface to the bottom surface, the slopes are X1 and X2 respectively.
  • the slope, X1 ⁇ X2 even includes ⁇ 3 slopes with different slopes from the top to the bottom to transition from the top to the bottom, but it is foreseeable that there are fewer calculations in the embodiment where the transition slope is gradual and the printed relief has a high stress strength.
  • the top surface and the bottom surface are only relative concepts. For example, after the relief model is rotated 180 degrees, the original bottom surface and top surface also change relatively. Therefore, in some embodiments, the presentation based on the relief model Alternatively, the area of the bottom surface may be smaller than the area of the top surface, as long as it does not affect the normal use of the print.
  • the embossing is a seal
  • the top surface of the embossed model or the bottom surface is used as the cover Chapter surface
  • those skilled in the art can choose according to the specific situation, it will not have a substantial impact on the implementation of each step in this application, and the same is true in the following embodiments, although in each embodiment of this application, the top surface is used. Being smaller than the bottom surface is an example, but in an actual implementation, the top surface may also be larger than the bottom surface.
  • the relief model may also have a two-dimensional pattern on its top surface, but its bottom surface is not a two-dimensional pattern.
  • the relief is a stamp
  • only a few layers on the surface of the stamp are required to have a concave-convex structure to form the outline corresponding to the pattern, so only the first few layers corresponding to the stamp surface can use a two-dimensional pattern during modeling.
  • the latter layers away from the stamp surface can be configured in any shape.
  • the bottom surface of the relief model is made to be a plane or other pattern with an area larger than that of the top surface, so as to form an inclined surface transitioning from the top surface to the bottom surface.
  • FIGS. 5 a to 5 c are schematic diagrams of an embodiment of generating a relief model from a two-dimensional pattern in the present application.
  • FIG. 5a shows a two-dimensional pattern. After extracting the closed curve in the two-dimensional pattern, a contour line 51 as shown in FIG. 5b can be obtained.
  • the area formed by each contour line in the two-dimensional pattern is used as the target area, that is, the outer contour of the relief model corresponding to each contour line is designed to have a transition slope in the Z direction, that is, as As shown in Fig. 5c, the outer contour 52 of each part of the relief model has a transition slope in the Z direction.
  • the protruding part When the embossed model formed by the method of this embodiment is printed as a solid embossed object, the protruding part has a high stress, so as to avoid insufficient deflection when the surface is subjected to pressure.
  • the present application utilizes the feature of layer-by-layer accumulation and solidification of 3D printing, and realizes the transition slope of the outer contour of the printed entity through the gradual gradual change of the slice pattern in each slice layer.
  • a three-dimensional relief model can be obtained by performing faceting processing based on each contour node of the contour line in the two-dimensional pattern and preset dimension-raising parameters.
  • a line or a shape, etc. can be described by connecting a line segment between a plurality of nodes.
  • a circular shape can be formed by several nodes, and adjacent nodes can be connected to form a circle.
  • the smoothness of the circular contour can depend on the number of these nodes. The more the number of nodes, the higher the contour accuracy. The smaller the number of nodes, the lower the contour accuracy.
  • each contour line in the two-dimensional pattern can also be described based on the connection between each contour node. The greater the number of contour nodes, the higher the accuracy of the contour line and the higher the surface accuracy of the relief model; the smaller the number of contour nodes, the lower the accuracy of the contour line and the lower the surface accuracy of the relief model.
  • the dimension-raising parameters include parameters required when converting from two-dimensional to three-dimensional, including but not limited to slope angle, stretch thickness, slice layer number, slice thickness, and the like.
  • the slope angle includes the slope angle corresponding to the transition slope of the outer contour of the relief model;
  • the stretch thickness includes the thickness of the three-dimensional model, that is, the dimension in the Z-axis direction;
  • the slice layer number includes the number of slice layers of the relief model ;
  • the slice thickness includes the slice layer thickness of the relief model.
  • the upscaling parameter includes a ramp angle.
  • the slice data processing system first generates the top surface and the bottom surface according to the two-dimensional pattern, and then uses the top surface as a reference to determine the slope angle parameter at a preset angle. Next, a bottom surface corresponding to the top surface is generated, wherein the bottom surface and the top surface have corresponding contour nodes. Connect the corresponding contour nodes in the contour lines of the top and bottom surfaces, and then slice them to obtain the 3D data of the corresponding relief model.
  • the meshing includes describing the three-dimensional model through triangular meshes and/or other mesh structures.
  • the dimensional scaling parameter includes stretch thickness.
  • the slice data processing system first generates top and bottom surfaces of different sizes according to the two-dimensional pattern, and then the tension between the top surface and the bottom surface can be determined.
  • the distance between the top surface and the bottom surface that is, the thickness of the relief model
  • the transition slope between the top surface and the bottom surface can be generated based on this.
  • the dimensional scaling parameters include bevel angle and draw thickness. For example, after taking the two-dimensional pattern as the top surface of the relief model, according to each contour node in the contour line of the two-dimensional pattern, based on the angle of the bevel and the extruded thickness, determine the position where each contour node is mapped to the bottom surface, thereby obtaining the pattern of the bottom surface . The contour nodes in the bottom surface are connected, and the corresponding contour nodes in the top surface and the bottom surface are connected, and then the model is sliced to obtain the three-dimensional data of the corresponding relief model.
  • FIGS. 6 a to 6 d are schematic diagrams of an embodiment of the process of generating a relief model in the present application.
  • Fig. 6a shows a two-dimensional pattern
  • the contour line in the two-dimensional pattern includes a plurality of contour nodes as shown in Fig. 6b: contour node a, contour node b, contour node c, contour node d, contour node e, contour node Node f, contour node g, contour node h.
  • the two-dimensional pattern is used as the top surface of the relief model.
  • the position of the corresponding contour node in the bottom surface after stretching can be calculated based on the preset slope angle and the stretching thickness.
  • the contour lines are connected with the corresponding contour nodes in the bottom surface contour lines.
  • the contour node a can find the corresponding contour node a'. After traversing the contour nodes, the contours on the top surface can be obtained. The nodes correspond to the positions of each contour node in the bottom surface. Based on the positional relationship of each contour node in the top surface, each contour node in the bottom surface is correspondingly connected to obtain the pattern of the bottom surface.
  • the corresponding contour nodes in the top surface and the bottom surface are connected, for example, the contour node a and the contour node a' are connected, and other corresponding contour nodes are connected in the same way, and finally the faceting process is performed, as shown in Figure 6d, that is, Three-dimensional data of the relief model can be obtained.
  • some 3D software can also realize the way of directly stretching the 2D pattern to form the 3D model. For example, after the top surface of the relief model is determined by a two-dimensional pattern, the relief model with a transition slope in the outer contour is formed by stretching the top surface downward and setting the size of the bottom surface.
  • FIG. 7 shows a schematic diagram of the two-dimensional pattern in the present application in yet another embodiment.
  • FIG. 7 includes two circles that are relatively close to each other. Although the two circles are not connected to each other in the two-dimensional pattern, in the process of generating the relief model from the two-dimensional pattern, the two circles are not connected to each other.
  • the contour of the 2D pattern generates a transition slope, and the contour in the two-dimensional pattern will show a trend of gradually increasing, so the outer contours of the two circles may be spliced in the later layers of the embossed model slice layer.
  • the slice data processing system further determines the slope of the transition slope at the position corresponding to the contour line in the relief model according to the positional relationship between the contour lines.
  • the slice data processing system determines the slope of the transition slope at the position corresponding to the contour line in the relief model to be generated based on the positional relationship between the contour lines in the two-dimensional pattern, so that closed curves with similar positions are at least in the relief model. Splicing of structures does not occur in the first few layers of the model.
  • the relief model has outer contours corresponding to multiple closed curves in the two-dimensional pattern, and the slope of the transition slope can be adjusted for the outer contour whose relative distance is less than a distance threshold in each outer contour, so that the slope at the outer contour is at least It does not interact with the bevels of other outer contours in the first layers of the relief model.
  • the slope where the outer contour may be spliced with other outer contours can be made lower than the slope of the transition slope of other parts, while the slope of other parts of the outer contour remains unchanged, so that at least the first few parts of the relief model The bevels in the layer and other outer contours do not interact with each other.
  • the adjustment of the slope includes adjusting the slope to 0.
  • the slice data processing system may also set the relief model corresponding to the outer contour without setting a transition slope, that is, the slope is 0.
  • step S130 the relief model is sliced to obtain slice data corresponding to each slice layer.
  • slice data of the relief model is obtained.
  • the slice parameters include, but are not limited to, the number of slice layers, slice thickness, and the like.
  • the slicing data includes slicing patterns in each slicing layer, and the 3D printing equipment can form a relief entity product corresponding to the relief model after the printing layers printed according to each slicing pattern are solidified and accumulated layer by layer during the printing process.
  • the slicing method may be horizontal slicing or vertical slicing, and the operator can configure the slicing method according to actual needs.
  • the required 3D printed solid object includes a base part in addition to the corresponding relief member after printing based on the relief model.
  • the base part can be used as a support base for the relief member; on the other hand, the base part Can also be used to install relief components into other parts or for ease of use.
  • the embossed model is a stamp
  • the printed embossed member is installed in the stamp holder.
  • the embossed member with the base can be made easier to fit into the stamp holder for use than the embossed member alone.
  • the slicing data processing system further generates a pedestal model, the pedestal model being close to the side of the relief model with a larger area.
  • the base model is adjacent to the bottom surface of the relief model.
  • FIG. 5d is a schematic diagram of adding a base model to the relief model of FIG. 5c of the present application in one embodiment.
  • the base model may also be preset in the slice data processing system. The slice data processing system does not need to generate the base model separately each time, but only needs to add the base model to the relief model through selective operations. middle.
  • the base model can be added to the relief model before the relief model is sliced, so that the base model and the relief model are sliced at the same time when slicing.
  • the base model may also be generated after slicing the relief model, and after slicing the base model, the slice data of the base model and the slice data of the relief model are integrated.
  • FIG. 8 shows a schematic diagram of functional modules of the slice data processing system in the present application in an embodiment.
  • the slice data processing system 80 includes a first communication module 801 and a first processing module 802.
  • the first communication module 801 is used to obtain a two-dimensional pattern corresponding to the relief model
  • the first processing module 802 is used to obtain a contour line based on the two-dimensional pattern.
  • a relief model is generated, wherein the outer contour of each target area in the relief model has a transition slope in the Z direction.
  • the first processing module 802 slices the relief model to obtain slice data corresponding to each slice layer.
  • the slice data processing system further sends the slice data to the 3D device through the first communication module 801 .
  • the first processing module is based on the contour of the two-dimensional pattern
  • the step of generating the relief model includes: performing faceting processing based on contour nodes in the contour and preset dimension-raising parameters to The relief model is obtained.
  • the dimension-raising parameter includes at least one of a bevel angle and a stretch thickness.
  • the contour node is determined by the first processing module based on the surface accuracy of the relief model.
  • the first processing module slices the base model and the relief model to obtain slice data corresponding to the slice layers of the base model and the relief model respectively; wherein, the slice layers of the base model are Adjacent to the slice layer on the underside of the embossed model.
  • the first communication module acquires a two-dimensional bitmap
  • the first processing module converts the acquired two-dimensional bitmap into a two-dimensional pattern in a vector format.
  • the first processing module determines the contour of the two-dimensional pattern based on each closed curve in the two-dimensional pattern.
  • the target area is determined based on the area of the area defined by each contour line.
  • the first processing module further determines the slope of the transition slope at the position corresponding to the contour line in the relief model according to the positional relationship between the contour lines.
  • slice data is obtained by first generating a relief model and then slicing.
  • slice data can be generated directly from a two-dimensional pattern.
  • FIG. 2 is a schematic diagram of another embodiment of the slice data processing method in the present application.
  • step S210 a two-dimensional pattern corresponding to the relief model is obtained.
  • step S210 is similar to the method for acquiring a two-dimensional pattern in step S110, so it is not repeated here.
  • step S220 multiple slice layers are generated based on the outline of the two-dimensional pattern, and values are assigned to each slice layer to obtain slice data corresponding to each slice layer; wherein, the multiple slice layers are superimposed in the Z direction. Then, the relief model can be formed, and the outer contour of the target area in the relief model has a transition slope in the Z direction.
  • the assignment includes, but is not limited to, the thickness of the slicing layer, the serial number of the slicing layer, the slicing pattern of the slicing layer, and the like. Since the outer contour of the target area in the relief has a transition slope in the Z direction, the slicing pattern of each slicing layer can be gradually changed. Assign the value to determine the slice pattern, layer thickness, position and other information of each slice layer, so that the 3D printing device can print the corresponding relief object based on this.
  • the step of assigning value to each slice layer includes: setting a slice sequence number, slice thickness and an offset value of the contour of each slice layer for each slice layer.
  • the total number of slice layers can be determined based on the slice thickness; setting the slice sequence number includes determining the relative position sequence for each slice layer; setting the offset value of the contour of each slice layer includes defining the contour in each slice layer
  • the head and tail slice layers may be generated first, and then the remaining slice layers are generated between the head and tail slice layers.
  • the slicing pattern in the first slicing layer can be generated according to the contour line of the two-dimensional pattern, and then the pixels of each contour in the first slicing layer can be shifted based on a preset ratio to generate the slicing pattern in the last slicing layer, and then the slicing pattern in the last slicing layer can be generated. Add several slice layers between the first slice layer and the last slice layer, so that the outline of each slice layer forms a gradual transition slope in the Z direction. Please refer to FIG.
  • 3c which is a schematic diagram of generating each slice layer based on the contour lines of the two-dimensional pattern in the present application in one embodiment.
  • the slice data processing system generates the first slice based on the two-dimensional pattern shown in FIG. 3a.
  • the pixels of each contour in the first slice layer are shifted based on the preset ratio to generate the slice pattern 32 in the last slice layer, and then several slice layers are added between the first slice layer and the last slice layer to make the slice pattern 32 in the last slice layer.
  • a gradual transition slope is formed between the contours of each slice layer in the Z direction.
  • the first slicing layer may be generated first, and then the remaining slicing layers may be generated in a top-down or bottom-up manner.
  • the first slice layer can be generated according to the outline of the two-dimensional pattern, and then the pixels of each outline in the first slice layer can be shifted layer by layer according to a preset ratio to generate slice layers of the remaining slice layers, so that each slice The contours of the layers form gradual transition slopes in the Z direction.
  • the required 3D printed solid object includes a base part in addition to the corresponding relief member after printing based on the relief model.
  • the base part can be used as a support base for the relief member; on the other hand, the base part Can also be used to install relief components into other parts or for ease of use.
  • the embossed model is a stamp
  • the printed embossed member is installed in the stamp holder.
  • the embossed member with the base can be made easier to fit into the stamp holder for use than the embossed member alone.
  • the slicing data processing system further generates a slicing layer of the base model, and the slicing layer of the base model is adjacent to the slicing layer with the largest slice pattern area among the slicing layers of the relief model.
  • FIG. 9 shows a schematic diagram of functional modules of the slice data processing system in the present application in another embodiment.
  • the slice data processing system 90 includes a second communication module 901 and a second processing module 902.
  • the second communication module 901 is used to obtain a two-dimensional pattern corresponding to the relief model
  • the second processing module 902 is used to obtain a contour line based on the two-dimensional pattern.
  • generate multiple slice layers and assign values to each slice layer to obtain slice data corresponding to each slice layer; wherein, the multiple slice layers can form the relief model after being superimposed in the Z direction, and in the relief model
  • the outer contour of the target area has a transition slope in the Z direction.
  • the slice data processing system further sends the slice data to the 3D device through the second communication module 901 .
  • the second processing module sets a slice sequence number, slice thickness, and an offset value of the contour of each slice layer for each slice layer.
  • the second communication module acquires a two-dimensional bitmap
  • the second processing module converts the acquired two-dimensional bitmap into a two-dimensional pattern in a vector format.
  • the second processing module determines the contour of the two-dimensional pattern based on each closed curve in the two-dimensional pattern.
  • the target area is determined based on the area of the area defined by each contour line.
  • the second processing module is further configured to generate a slice layer corresponding to the base model.
  • the present application also provides a 3D printing method of a relief model, the 3D printing method being performed by a 3D printing device. Specifically, after the 3D printing device obtains the printing data of the relief model, based on the printing data, the 3D printing device prints each sliced layer of the relief model layer by layer, so as to obtain a solidified layer corresponding to each sliced layer, And the 3D component corresponding to the relief model is obtained after each solidified layer is accumulated layer by layer.
  • the print data can be obtained according to the slice data processing method in the embodiment corresponding to FIG. 1 or FIG. 2 , so the outer contour of each target area in the relief printed based on the print data has a transition slope in the Z direction.
  • the printed 3D component includes the base portion in addition to the relief portion.
  • the 3D printing device may be any printing device, and prints the relief corresponding to the relief model based on the generated slice data.
  • the 3D printing equipment may be SLA, DLP, SLS, SLM, FDM printing equipment and the like.
  • the printing surface is usually preset at the interface between the material to be cured and the air.
  • the Z-axis drive mechanism drives the component platform and the cured layer attached to it to descend to fill the form. New pre-printed layers.
  • each cured layer is accumulated on the component plate to obtain a 3D object.
  • its energy radiation device includes a laser transmitter, a lens group located on the outgoing light path of the laser transmitter, and a The galvanometer group on the light-emitting side of the lens group, and the motor that controls the galvanometer, etc., wherein the laser transmitter is controlled to adjust the energy of the output laser beam, and the laser transmitter can controllably emit a laser beam of preset power and stop Emitting the laser beam, the laser transmitter can also controllably increase the power of the laser beam and reduce the power of the laser beam.
  • the lens group is used to adjust the focus position of the laser beam
  • the galvanometer group is used to scan the laser beam in the two-dimensional space of the bottom or top surface of the container in a controlled manner, and the light-cured material scanned by the beam is cured into a corresponding pattern cured layer.
  • the energy radiation device includes a DMD chip, a controller, a storage module, and the like.
  • the storage module stores layered images of layered 3D object models.
  • this mirror is composed of hundreds of thousands or even millions of micromirrors, each micromirror Represents a pixel from which the projected image is constructed.
  • the DMD chip can be simply described as a semiconductor optical switch and a micro-mirror corresponding to a pixel point, the controller allows/forbids each micro-chip to reflect light by controlling each optical switch in the DMD chip, thereby irradiating the corresponding layered image to the light
  • the surface of the material is cured so that the photo-curable material corresponding to the shape of the image is cured to obtain a patterned cured layer.
  • Another example is selective laser sintering SLS, which uses infrared lasers to sinter powder.
  • the computer converts the 3D data of the object into 2D data of layer-by-layer cross-section and transmits it to the printer.
  • the printer controls the laser to selectively irradiate the powder above the laid powder.
  • the laser energy is absorbed by the powder in the selected area and converted into heat energy.
  • the contact interface between the powder particles heated to the sintering temperature is enlarged, the pores are reduced, and the densification degree is increased, and then cooled and solidified into a dense and hard sintered body, which is processed into the current layer.
  • a new layer of powder is spread on top of the sintered current layer, and the equipment transfers the data of the section of the new layer for processing, and bonds with the section of the previous layer. This process is cycled layer by layer until the entire object is formed.
  • the slice data includes the data of each slice layer after slicing the 3D model corresponding to the printed object.
  • the 3D printing device reads the slice data corresponding to each slice layer, and controls the optical machine and component platform. And other institutions work together to obtain printed objects that are accumulated and cured layer by layer.
  • the slice data processing method in the present application is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium.
  • the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the computer readable and writable storage medium may include read-only memory, random access memory, EEPROM, CD-ROM or other optical disk storage devices, magnetic disk storage devices or other magnetic storage devices, flash memory, A USB stick, a removable hard disk, or any other medium that can be used to store the desired program code in the form of instructions or data structures and that can be accessed by a computer. Also, any connection is properly termed a computer-readable medium.
  • the instructions are sent from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave
  • coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave
  • computer-readable storage media and data storage media do not include connections, carrier waves, signals, or other transitory media, but are instead intended to be non-transitory, tangible storage media.
  • Disk and disc includes compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk, and blu-ray disc, where disks usually reproduce data magnetically, while discs use lasers to optically reproduce data replicate the data.
  • the functions described by the computer programs of the methods described herein may be implemented in hardware, software, firmware, or any combination thereof.
  • the functions When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium.
  • the steps of the methods or algorithms disclosed herein may be embodied in processor-executable software modules, where the processor-executable software modules may reside on a tangible, non-transitory computer readable and writable storage medium.
  • Tangible, non-transitory computer-readable storage media can be any available media that can be accessed by a computer.
  • each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which contains one or more possible functions for implementing the specified logical function(s) Execute the instruction.
  • the functions noted in the blocks may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved.
  • each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations can be implemented by dedicated hardware-based systems that perform the specified functions or operations , or can be implemented by a combination of dedicated hardware and computer instructions.

Abstract

Procédé et système de traitement de données de tranche pour un modèle de relief, et procédé d'impression 3D. Le procédé de traitement de données de tranche consiste : à acquérir un motif bidimensionnel correspondant à un modèle de relief (S110) ; à générer un modèle de relief sur la base du contour du motif bidimensionnel (S120) ; puis à effectuer un traitement de découpage en tranches sur le modèle de relief pour obtenir des données de tranche correspondant à des couches de tranche respectives (S130). En variante, des couches de tranche peuvent être directement générées sur la base du contour du motif bidimensionnel, et l'attribution est effectuée par rapport à des couches de tranche respectives pour obtenir des données de tranche correspondant aux couches de tranche respectives. Les contours externes de régions cibles respectives dans le modèle de relief ont des sections de transition inclinées dans la direction Z, de telle sorte qu'une surface d'un relief imprimé n'est pas endommagée en raison d'une déflexion insuffisante lorsqu'elle est soumise à une pression.
PCT/CN2020/133043 2020-11-27 2020-12-01 Procédé et système de traitement de données de tranche pour modèle de relief, et procédé d'impression 3d WO2022110255A1 (fr)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103143706A (zh) * 2013-03-07 2013-06-12 无锡安迪利捷贸易有限公司 一种印章的3d打印制造方法
US20130337386A1 (en) * 2012-06-14 2013-12-19 Dirk De Rauw Processing apparatus for processing a flexographic plate, a method and a computer program product
US20140253549A1 (en) * 2013-03-11 2014-09-11 Autodesk, Inc. Techniques for slicing a 3d model for manufacturing
CN105881917A (zh) * 2016-06-27 2016-08-24 苏州大学 一种3d打印的切片方法
CN106273444A (zh) * 2015-06-02 2017-01-04 北京大业三维科技有限公司 一种3d打印系统的脱模控制方法及装置
CN108995219A (zh) * 2018-05-31 2018-12-14 共享智能铸造产业创新中心有限公司 一种层厚可变的切片方法、3d打印方法及3d打印的产品

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105904729B (zh) * 2016-04-22 2018-04-06 浙江大学 一种基于倾斜分层的无支撑三维打印方法
CN106683550A (zh) * 2017-01-10 2017-05-17 首都医科大学附属北京友谊医院 一种耳部结构模型的制造方法及装置
CN108297395A (zh) * 2017-11-07 2018-07-20 杭州先临三维云打印技术有限公司 一种基于3d打印的模型制作方法
CN109226759B (zh) * 2018-10-23 2020-07-10 大族激光科技产业集团股份有限公司 铺粉式激光3d打印的扫描路径设置方法、装置及控制设备

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130337386A1 (en) * 2012-06-14 2013-12-19 Dirk De Rauw Processing apparatus for processing a flexographic plate, a method and a computer program product
CN103143706A (zh) * 2013-03-07 2013-06-12 无锡安迪利捷贸易有限公司 一种印章的3d打印制造方法
US20140253549A1 (en) * 2013-03-11 2014-09-11 Autodesk, Inc. Techniques for slicing a 3d model for manufacturing
CN106273444A (zh) * 2015-06-02 2017-01-04 北京大业三维科技有限公司 一种3d打印系统的脱模控制方法及装置
CN105881917A (zh) * 2016-06-27 2016-08-24 苏州大学 一种3d打印的切片方法
CN108995219A (zh) * 2018-05-31 2018-12-14 共享智能铸造产业创新中心有限公司 一种层厚可变的切片方法、3d打印方法及3d打印的产品

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