Three-dimensional printing method, storage unit, computing device and three-dimensional printing system
By planning the first path and the second path in the path planning stage of three-dimensional printing, the problem of difficulty in eliminating the printing of some three-dimensional prints in the prior art is solved, and a higher finished product pass rate and faster printing speed are achieved.
Patent Information
- Application Number
- CN202411851626.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-03-18
AI Technical Summary
It is difficult for the existing three-dimensional printing technology to cancel the printing of some three-dimensional printing parts during the molding process, while retaining the molding of other three-dimensional printing parts, resulting in a low pass rate of finished products.
In the path planning stage, firstly, the first path for forming the same three-dimensional prints in each layer is planned and calibrated, and then the second path is planned to connect the first paths. During the forming stage, after the printing of the partial three-dimensional print is cancelled, the corresponding first path is removed, the second path is re-planned to connect the retained first path, and molded according to the new path.
It realizes that during the three-dimensional printing process, it is more convenient to cancel the printing of some three-dimensional printing parts, while retaining the molding of other three-dimensional printing parts, saving printing materials and speeding up printing speed.
Smart Images
Figure CN119636079A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to a field, and in particular to a three-dimensional printing method, a storage unit, a computing device, and a three-dimensional printing system. Background Art
[0002] In the prior art, a 3D printing method for forming at least two 3D printed parts by melt-depositing printing materials layer by layer includes a position determination phase, a path planning phase, and a forming phase. The position determination phase is used to determine the position of each 3D printed part on the printing platform. The path planning phase performs path planning with the shortest overall path as the optimization goal. The forming phase performs melt-depositing printing materials layer by layer according to the path planning to form each 3D printed part.
[0003] In the prior art, the qualified rate of finished products of layer-by-layer fused deposition printing materials is not high. Once it is found during the molding process that the molded part of an individual 3D printed part is unqualified, it is difficult to cancel the printing of the 3D printed part during the molding process while retaining the molding of other 3D printed parts. Summary of the invention
[0004] The purpose of the present application is to overcome the above-mentioned defects or problems existing in the background technology and to provide a three-dimensional printing method, which is more convenient than the prior art to cancel the printing of some three-dimensional printed parts during the molding process while retaining the molding of other three-dimensional printed parts.
[0005] In order to achieve the above purpose, the following technical solutions are adopted:
[0006] The first technical solution relates to a three-dimensional printing method, which forms at least two three-dimensional printed parts by melt-depositing printing materials layer by layer, wherein, in a path planning stage, firstly, a first path in each layer for forming the same three-dimensional printed part is planned and calibrated, and then a second path is planned to connect the first paths; in a forming stage, after at least part of the three-dimensional printed parts that have not been formed are cancelled, the following steps are performed: Step 1: removing the first path corresponding to the cancelled three-dimensional printed part in the subsequent layer; Step 2: re-planning the second path to connect the retained first paths; Step 3: forming the three-dimensional printed parts that have not been cancelled according to the first path and the re-planned second path.
[0007] The second technical solution is based on the first technical solution, wherein when planning the first path, the first path has no direction; and the direction of the first path is determined when planning the second path.
[0008] The third technical solution is based on the second technical solution, wherein the second path is planned according to the optimization goal of the shortest total path of the layer.
[0009] The fourth technical solution is based on the third technical solution, wherein, when planning the second path of other layers except the first layer, planning is performed according to the method of connecting the starting point with the end point of the previous layer.
[0010] The fifth technical scheme relates to a three-dimensional printing method, which includes obtaining at least two geometric model data, wherein the geometric model data are related to the three-dimensional printed part to be formed; calibrating the position and posture of each geometric model data; slicing and layering the geometric model data with calibrated position and posture layer by layer to form path planning data for each layer, wherein the path planning data for each layer is divided into first path data corresponding to the geometric model data and second path data for each first path data; upon receiving a printing instruction, generating a printing path instruction layer by layer according to the path planning data; upon receiving a cancel printing instruction, obtaining the canceled geometric model data; deleting the first path data related to the canceled geometric model data in the subsequent layer and replanning the second path data to regenerate the path planning data; and generating a printing path instruction layer by layer according to the regenerated path planning data.
[0011] The sixth technical solution relates to a storage unit which stores a computer program, wherein the computer program is used to implement the three-dimensional printing method as described in the fifth technical solution.
[0012] The seventh technical solution relates to a computing device, which includes an input unit, an output unit, a computing unit and a storage unit as described in the sixth technical solution, wherein the input unit is used to obtain geometric model data, canceled geometric model data, printing instructions and cancel printing instructions, the output unit is used to output path instructions, and the computing unit calls and executes the computer program.
[0013] The eighth technical solution relates to a three-dimensional printing system, which includes a three-dimensional printer and a computing device as described in the seventh technical solution, wherein the three-dimensional printer is used to execute the path instructions output by the computing device and perform three-dimensional printing.
[0014] Compared with the prior art, the above solution has the following beneficial effects:
[0015] In the first technical solution, by first planning and calibrating the first path for forming the same three-dimensional printed part in each layer in the path planning stage, and then planning the second path to connect the first paths, it is convenient to remove the first path corresponding to the three-dimensional printed part after at least part of the three-dimensional printed part that has not been completed is cancelled, so as to cancel the printing of the cancelled three-dimensional printed part and retain the forming of other three-dimensional printed parts, which is also beneficial to saving printing materials and speeding up the printing speed.
[0016] In the second technical solution, when planning the first path, the first path has no direction, and the direction of the first path is determined when planning the second path, which is beneficial to saving the total path of the layer by planning the second path and can speed up the printing speed.
[0017] In the third technical solution, when planning the second path, planning is performed according to the optimization goal of the shortest total path of the layer, which is conducive to optimizing the total path of the layer and can speed up the printing speed.
[0018] In the fourth technical solution, when planning the second path of other layers except the first layer, connecting the starting point with the end point of the previous layer is beneficial to saving the total path of all layers and can speed up the printing speed.
[0019] The fifth technical solution is a specific method for the computing unit in the computing device of the three-dimensional printing system to implement the three-dimensional printing method described in the first technical solution. The first path data in the fifth technical solution corresponds to the first path in the first technical solution. The second path data in the fifth technical solution corresponds to the second path in the first technical solution.
[0020] The sixth, seventh and eighth technical solutions provide a material basis for realizing the above method. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solution of the embodiment, the following briefly introduces the drawings required for use:
[0022] Figure 1 A schematic diagram of the positions of the three-dimensional printed parts after the position determination stage in the embodiment is completed;
[0023] Figure 2 This is a schematic diagram of the first path in the layer during the path planning stage in the embodiment;
[0024] Figure 3 A schematic diagram of a path in a layer after the path planning stage in the embodiment is completed;
[0025] Figure 4 A schematic diagram of the path in the layer after part of the 3D print is unprinted.
[0026] Description of main reference numerals:
[0027] 1. Printing platform; A. First three-dimensional printed part; B. Second three-dimensional printed part; C. Third three-dimensional printed part; A1. First path with first three-dimensional printed part; B1. First path with second three-dimensional printed part; C1. First path with third three-dimensional printed part; 2. Second path; 2a. Replanned second path. DETAILED DESCRIPTION
[0028] In the claims and the description, unless otherwise defined, the terms "first", "second" or "third", etc. are intended to distinguish different objects rather than to describe a specific order.
[0029] In the claims and the specification, unless otherwise defined, terms such as "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings and are only for the convenience of simplifying the description and do not imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction.
[0030] In the claims and the specification, unless otherwise defined, the term "fixed connection" or "fixed connection" should be understood in a broad sense, that is, any connection method in which there is no displacement relationship and relative rotation relationship between the two parties, that is to say, including non-detachable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or elements.
[0031] In the claims and the description, unless otherwise defined, the terms "includes", "has" and their variations mean "including but not limited to".
[0032] In the claims and the specification, unless otherwise defined, the term "provided with" means that the technical feature located thereafter is a part of the technical feature located therefor.
[0033] The technical solutions in the embodiments will be described clearly and completely below in conjunction with the accompanying drawings.
[0034] Example
[0035] See also Figure 1 , Figure 1 FIG. 2 shows the position of each three-dimensional printed part relative to the printing platform 1 after the position determination stage is completed in this embodiment. Figure 1 As shown, in this embodiment, three three-dimensional printed parts need to be printed, namely a first three-dimensional printed part A, a second three-dimensional printed part B and a third three-dimensional printed part C.
[0036] After the position determination phase is completed, the path planning phase begins. In the path planning phase, the first path in each layer for forming the same 3D printed part is planned and calibrated. Figure 2 , Figure 2 FIG. 2 shows the first paths in a certain layer in this embodiment. Figure 2As shown, the layer includes a first path A1 of the first three-dimensional printed part, a first path B1 of the second three-dimensional printed part, and a first path C1 of the third three-dimensional printed part. Among them, the first path A1 of the first three-dimensional printed part passes through four parts that belong to the first three-dimensional printed part A. In this embodiment, when planning the first path, the first path has no direction. In other embodiments, the first path can also have a predetermined direction. After the first path planning is completed, the second path 2 is planned to connect the first paths. The direction of each first path is determined when planning the second path 2. When planning the second path 2, planning is performed according to the optimization goal of the shortest total path of the layer. When planning the second path 2 of other layers except the first layer, planning is performed according to the method of connecting the starting point with the end point of the previous layer. See Figure 3 , Figure 3 FIG. 2 shows the first path 2 and the second path in a certain layer in this embodiment. Figure 3 As shown, the second path in this embodiment first connects the first 3D printing component first path A1 and the third 3D printing component first path C1, and then connects the third 3D printing component first path C1 and the second 3D printing component first path B1.
[0037] During the forming stage, if a command is received to cancel the printing of a partially unfinished 3D printed part, the following steps are executed:
[0038] Step 1: removing the first path corresponding to the cancelled three-dimensional printed part in the subsequent layer;
[0039] Step 2: re-planning the second path to connect the retained first paths; the rule for re-planning the second path is the same as the rule for planning the second path;
[0040] Step 3: Forming each three-dimensional printed part that has not been canceled according to the first path and the re-planned second path.
[0041] See also Figure 4 , Figure 4 It shows that after receiving the instruction to cancel the printing of the third 3D print part C, firstly, all the first paths C1 of the third 3D print part in the subsequent layers are removed, and then the second path is re-planned according to the rules for planning the second path 2, and the re-planned second path 2a directly connects the first path A1 of the first 3D print part and the first path B1 of the second 3D print part. Finally, the first 3D print part A and the second 3D print part B whose printing is not canceled are formed according to the first path A1 of the first 3D print part, the first path B1 of the second 3D print part and the re-planned second path 2a.
[0042] In this embodiment, the three-dimensional printing system includes a three-dimensional printer and a computing device. The three-dimensional printer is used to execute the path planning instructions output by the computing device to perform three-dimensional printing. The computing device includes an input unit, an output unit, a storage unit and a computing unit. The input unit is used to obtain geometric model data, canceled geometric model data, print orders and cancel printing instructions. The output unit is used to output sintering instructions and powder spreading instructions. The storage unit is used to store computer programs, and the computing unit is used to call and execute computer programs. Among them, the computer program is used to implement the following three-dimensional printing method:
[0043] Acquire at least two geometric model data, wherein the geometric model data are related to the three-dimensional printed part to be formed;
[0044] Calibrate the position and posture of each geometric model data;
[0045] Slicing and layering the geometric model data of the calibrated position and posture layer by layer to form path planning data of each layer, wherein the path planning data of each layer is divided into first path data corresponding to the geometric model data and second path data for each first path data;
[0046] After receiving the printing instruction, the printing path instruction is generated layer by layer according to the path planning data;
[0047] After receiving the cancel printing instruction, the canceled geometric model data is obtained;
[0048] Deleting the first path data related to the cancelled geometric model data in a subsequent layer and replanning the second path data to regenerate the path planning data;
[0049] The printing path instructions are generated layer by layer according to the regenerated path planning data.
[0050] In this embodiment, by first planning and calibrating the first path for forming the same three-dimensional printed part in each layer in the path planning stage, and then planning the second path 2 to connect the first paths, it is convenient to remove the first path corresponding to the three-dimensional printed part after at least part of the three-dimensional printed part that has not been completed is cancelled, so as to cancel the printing of the cancelled three-dimensional printed part and retain the forming of other three-dimensional printed parts, which is also beneficial to saving printing materials and speeding up the printing speed.
[0051] In this embodiment, when planning the first path, the first path has no direction, and the direction of the first path is determined when planning the second path 2, which is beneficial for saving the total path of the layer by planning the second path 2, and can speed up the printing speed.
[0052] In this embodiment, when planning the second path 2, planning is performed according to the optimization goal of the shortest total path of the layer, which is conducive to optimizing the total path of the layer and can speed up the printing speed.
[0053] In this embodiment, when planning the second path 2 of other layers except the first layer, the connection between the starting point and the end point of the previous layer is beneficial to saving the total path of all layers and can speed up the printing speed.
[0054] The above specification and description of the embodiments are used to explain the protection scope of the present application, but do not constitute a limitation on the protection scope of the present application.
Claims
1. A three-dimensional printing method, which forms at least two three-dimensional printed parts by melting and depositing printing materials layer by layer, wherein In the path planning stage, firstly, a first path for forming the same three-dimensional printed part in each layer is planned and calibrated, and then a second path is planned to connect the first paths; In the forming stage, at least part of the unfinished three-dimensional printed part is cancelled and then the following steps are performed: Step 1: removing the first path corresponding to the cancelled three-dimensional printed part in the subsequent layer; Step 2: replanning the second path to connect the retained first paths; Step 3: Forming each three-dimensional printed part that has not been canceled according to the first path and the re-planned second path.
2. A three-dimensional printing method as claimed in claim 1, characterized in that: When planning the first path, the first path has no direction; the direction of the first path is determined when planning the second path.
3. A three-dimensional printing method as claimed in claim 2, characterized in that: When planning the second path, the optimization goal is to make the total path of this layer as short as possible.
4. A three-dimensional printing method as claimed in claim 3, characterized in that: When planning the second path of other layers except the first layer, the planning is carried out according to the method of connecting the starting point with the end point of the previous layer.
5. A three-dimensional printing method, characterized in that include: Acquire at least two geometric model data, wherein the geometric model data are related to the three-dimensional printed part to be formed; Calibrate the position and posture of each geometric model data; Slicing and layering the geometric model data of the calibrated position and posture layer by layer to form path planning data of each layer, wherein the path planning data of each layer is divided into first path data corresponding to the geometric model data and second path data for each first path data; After receiving the printing instruction, the printing path instruction is generated layer by layer according to the path planning data; After receiving the cancel printing instruction, the canceled geometric model data is obtained; Deleting the first path data related to the cancelled geometric model data in a subsequent layer and replanning the second path data to regenerate the path planning data; The printing path instructions are generated layer by layer according to the regenerated path planning data.
6. A storage unit storing a computer program, characterized in that The computer program is used to implement the three-dimensional printing method as claimed in claim 5.
7. A computing device, characterized in that It includes an input unit, an output unit, a computing unit and a storage unit as described in claim 6, wherein the input unit is used to obtain geometric model data, canceled geometric model data, printing instructions and cancel printing instructions, the output unit is used to output path instructions, and the computing unit calls and executes the computer program.
8. A three-dimensional printing system, characterized in that It comprises a three-dimensional printer and a computing device as claimed in claim 7, wherein the three-dimensional printer is used to execute the path instructions output by the computing device and perform three-dimensional printing.