CN112873835A - 3D printing support body reinforcing method and device - Google Patents
3D printing support body reinforcing method and device Download PDFInfo
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- CN112873835A CN112873835A CN202110122766.7A CN202110122766A CN112873835A CN 112873835 A CN112873835 A CN 112873835A CN 202110122766 A CN202110122766 A CN 202110122766A CN 112873835 A CN112873835 A CN 112873835A
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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
- 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
- B29C64/245—Platforms or substrates
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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
Abstract
The invention discloses a method and a device for reinforcing a 3D printing support body. Wherein, the method comprises the following steps: acquiring a support body set; selecting a support body to be connected from the support body set according to preset parameters; generating two-dimensional mapping information according to the support body to be connected, wherein the two-dimensional mapping information comprises: a projection point set and a two-dimensional mapping table; and executing support body reinforcement according to the two-dimensional mapping information and the support body to be connected. The invention solves the technical problems that the existing method adds support connection between the support bodies, only considers the support connection between every two support bodies and does not consider the space relation between a plurality of support bodies so that the support connection only strengthens the strength of the local support in a single direction and cannot strengthen the support bodies in all directions of the whole body in order to improve the support stability.
Description
Technical Field
The invention relates to the field of 3D printing, in particular to a method and a device for reinforcing a 3D printing support body.
Background
3D printing based on the photocuring technology is actually layered manufacturing, and specifically, a 3D model is sliced according to a specified layer thickness, and a printer solidifies the slices layer by layer to finally complete 3D printing. Based on the principle of layered manufacturing, the solidified slices of each layer are attached to the solidified slices of the previous layer (the first layer is attached to the tray). Adding support is therefore an important task in 3D printing to ensure the integrity of the printed model, ensuring that the model sticks firmly to the tray during printing. The main part of photocuring 3D printing model's support (connect support head or model and support base or tray) shape is long column usually, because reasons such as tray shake when tray motion, the new cured layer break away from in the printing process, leads to the supporter to have great rocking, supports the shaping and has horizontal indefinite deviation, or supports the shaping failure to lead to printing the reduction of model precision, even print failure.
At present, in order to improve the support stability, the existing method is to add support connection between support bodies, only consider the support connection between every two support bodies, and do not consider the spatial relationship between a plurality of support bodies, so that the support connection only strengthens the strength of local support in a single direction, and the support body reinforcement in all directions of the whole body cannot be carried out.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the invention provides a method and a device for reinforcing a 3D printing support body, which are used for at least solving the technical problems that in order to improve the support stability at present, the support connection is added between the support bodies, the support connection between every two support bodies is only considered, and the spatial relationship between a plurality of support bodies is not considered, so that the support connection only strengthens the strength of local support in a single direction, and the support body reinforcement in all directions of the whole body cannot be carried out.
According to an aspect of an embodiment of the present invention, there is provided a 3D printing support body reinforcing method, including: acquiring a support body set; selecting a support body to be connected from the support body set according to preset parameters; generating two-dimensional mapping information according to the support body to be connected, wherein the two-dimensional mapping information comprises: a projection point set and a two-dimensional mapping table; and executing support body reinforcement according to the two-dimensional mapping information and the support body to be connected.
Optionally, the generating two-dimensional mapping information according to the support to be connected includes: projecting the coordinates of the central point of the support body to be connected to a first plane to obtain the projection point set; and generating the two-dimensional mapping table according to the projection point set, wherein the two-dimensional mapping table represents the mapping relation between the support body to be connected and the projection point set.
Optionally, the performing support body reinforcement according to the two-dimensional mapping information and the support body to be connected includes: generating a communication relation according to the two-dimensional mapping information; and generating support connection according to the communication relation and the support body to be connected.
Optionally, the generating a connectivity relationship according to the two-dimensional mapping information includes: establishing a connected graph according to the projection point set and a preset stability condition; and generating a connected relation according to the connected graph and the two-dimensional mapping table.
According to another aspect of the embodiments of the present invention, there is also provided a 3D printing support body reinforcing apparatus, including: the acquisition module is used for acquiring a support body set; the selection module is used for selecting a support body to be connected from the support body set according to preset parameters; the mapping module is used for generating two-dimensional mapping information according to the support body to be connected, wherein the two-dimensional mapping information comprises: a projection point set and a two-dimensional mapping table; and the reinforcing module is used for executing support body reinforcing according to the two-dimensional mapping information and the support body to be connected.
Optionally, the mapping module includes: the projection unit is used for projecting the coordinates of the central point of the support body to be connected to a first plane to obtain the projection point set; the first generating unit is used for generating the two-dimensional mapping table according to the projection point set, wherein the two-dimensional mapping table represents the mapping relation between the support body to be connected and the projection point set.
Optionally, the reinforcement module includes: the communication unit is used for generating a communication relation according to the two-dimensional mapping information; and the reinforcing unit is used for generating support connection according to the communication relation and the support body to be connected.
Optionally, the communication unit includes: the establishing unit is used for establishing a connected graph according to the projection point set and a preset stability condition; and the second generation unit is used for generating a connected relation according to the connected graph and the two-dimensional mapping table.
According to another aspect of the embodiments of the present invention, there is also provided a non-volatile storage medium including a stored program, wherein the program controls a device in which the non-volatile storage medium is located to execute a 3D printing support body reinforcing method when running.
According to another aspect of the embodiments of the present invention, there is also provided an electronic device, including a processor and a memory; the memory has stored therein computer readable instructions for execution by the processor, wherein the computer readable instructions when executed perform a method of 3D printing support reinforcement.
In the embodiment of the invention, a support body acquisition set is adopted; selecting a support body to be connected from the support body set according to preset parameters; generating two-dimensional mapping information according to the support body to be connected, wherein the two-dimensional mapping information comprises: a projection point set and a two-dimensional mapping table; according to the two-dimensional mapping information and the support bodies to be connected, a support body reinforcing mode is executed, and the technical problem that in order to improve the support stability, the support connection is added between the support bodies, the support connection between every two support bodies is only considered, the spatial relation between the support bodies is not considered, the support connection is only enhanced in the strength of local support in the single direction, and the support body reinforcement in all directions of the whole body cannot be carried out is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a flowchart of a 3D printing support body reinforcing method according to an embodiment of the present invention;
fig. 2 is a block diagram of a 3D printing support body reinforcing apparatus according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating a reinforcing effect of a 3D printing support body reinforcing method according to an embodiment of the present invention;
fig. 4 is a flowchart of support connection calculation according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or 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 accordance with an embodiment of the present invention, there is provided a method embodiment of a 3D printing support body reinforcement method, it is noted that the steps illustrated in the flowchart of the drawings may be performed in a computer system such as a set of computer executable instructions, and that while a logical order is illustrated in the flowchart, in some cases the steps illustrated or described may be performed in an order different than here.
Example one
Fig. 1 is a flowchart of a 3D printing support body reinforcing method according to an embodiment of the present invention, as shown in fig. 1 and 4, the method includes the following steps:
step S102, a support body set is obtained.
Specifically, in order to obtain the support situation when the 3D printing model is generated, the embodiment of the present invention first obtains information of all supports, where the supports are used to support the 3D model structure, and one 3D model needs several supports to support when being generated, but only part of the supports need to be processed in a reinforcing manner, so as to increase the fixity and stability during the 3D printing process.
The support is a main body of the support, is parallel to the printing direction and is perpendicular to the tray surface, and the support is a general finger and can be a part of one support or the whole support. The shape of the support may be a cylinder, a cone, a frustum, an octahedron, or the like, and is generally represented by three-dimensional starting point coordinates (X1, Y1, Z1) and three-dimensional ending point coordinates (X2, Y2, Z2), may be represented by three-dimensional starting point coordinates (X1, Y1, Z1) and a length L, and may be represented by three-dimensional ending point coordinates (X2, Y2, Z2) and a length L. For example, the support body is connected at both ends to a support frame (indirectly connected to the model) and to a support base (indirectly connected to the tray) or tray.
And step S104, selecting a support body to be connected from the support body set according to preset parameters.
Specifically, in order to obtain the support to be connected in the embodiment of the present invention, after the information of the support is obtained, the shortest support length capable of generating the support connection needs to be calculated, and the preset parameters or conditions are as follows:
1) support connection diameter R
2) Minimum distance L1 from support connection starting point to support body end A (L1 > = 0)
3) Minimum distance L2 from support connection end to support body end B (L2 > = 0)
Using L to identify the length of the shortest support that can generate a support connection, wherein: l = L1 + L2, if L < diameter of the support connection R, then L = R. In addition, L may be manually input by the user, in addition to being obtained by the above calculation. L is used to determine whether the support is conditioned for generating a support connection, i.e. too short a support does not generate a support connection, wherein L1, L2, R are user adjustable.
For example, the struts in the generated struts are obtained and put into the set S1, the struts in the set S1 are traversed, the lengths of the struts are calculated, whether the lengths are larger than or equal to the length L of the shortest strut capable of generating the support connection is judged, and if the lengths are larger than or equal to the length L of the shortest strut capable of generating the support connection, the struts are added into the set S2 of the struts to be subjected to support connection.
Step S106, generating two-dimensional mapping information according to the support body to be connected, wherein the two-dimensional mapping information comprises: a set of projection points, and a two-dimensional mapping table.
Optionally, the generating two-dimensional mapping information according to the support to be connected includes: projecting the coordinates of the central point of the support body to be connected to a first plane to obtain the projection point set; and generating the two-dimensional mapping table according to the projection point set, wherein the two-dimensional mapping table represents the mapping relation between the support body to be connected and the projection point set.
Specifically, after the support bodies to be connected are obtained, in order to facilitate obtaining connection relation data between the support bodies, two-dimensional mapping information needs to be generated according to the support bodies to be connected, where the two-dimensional mapping information includes: a set of projection points, and a two-dimensional mapping table. The two-dimensional mapping information needs to be obtained by projecting a solid support onto a certain plane. For example, the center point of the support is projected onto the plane of the tray, the center coordinates of the area surrounded by all the central bodies are calculated, and the support closest to the center coordinates is acquired as the first support.
And S108, executing support body reinforcement according to the two-dimensional mapping information and the support body to be connected.
Optionally, the performing support body reinforcement according to the two-dimensional mapping information and the support body to be connected includes: generating a communication relation according to the two-dimensional mapping information; and generating support connection according to the communication relation and the support body to be connected.
Optionally, the generating a connectivity relationship according to the two-dimensional mapping information includes: establishing a connected graph according to the projection point set and a preset stability condition; and generating a connected relation according to the connected graph and the two-dimensional mapping table.
Specifically, the two-dimensional mapping information obtained according to the embodiment of the present invention is generated by generating a connectivity graph and connectivity on a two-dimensional plane graph, and performing support connection reinforcement according to the generated connectivity.
According to the first support body of the above embodiment, the starting point of the support connection is calculated on the first support body according to the preset parameters (the minimum distance L1 from the support connection starting point to the support body end, the diameter of the support connection, and the like). With the starting point as the center, a support body meeting the conditions is searched in a three-dimensional space range based on parameters such as preset length ranges (Lmax, Lmin) and an included angle A between the support body and the starting point. If the number is 1, executing the following steps: 3) searching a third support body, if the searched number is 0, adjusting the coordinates of the support connection starting point (offsetting the preset value towards the model direction), executing 2) searching a second support body again, and if the offset value exceeds the threshold value, executing 1) acquiring the first support body. And if the searched number is more than 1, selecting the optimal support body as a second support body according to a preset principle. The preset principle can be any one or any combination of distance-based, support length-based, support position, etc. The next step, i.e. 3), is carried out to project the starting points of the first and second support onto the pallet plane, obtaining the two-dimensional coordinate points C1, C2. And calculating the minimum distance Dmax = Lmax SinA in the horizontal direction of the support, and the maximum distance Dmin = Lmix SinA in the horizontal direction, connecting two points of C1 and C2 respectively by taking C1 and C2 as centers, wherein the radius is Dmin-Dmax, and searching the support body in a specified angle (Amin-Amax) to obtain the support body.
In the above determination, the Z value is not considered, and it is necessary to further select a support based on the parameters (starting point position, length, angle) of the support connection. If the number of the competition selection results is 1, executing the next step of 4) if the number of the competition selection results is 0, adjusting the coordinates of the support connection starting point (offsetting the preset value towards the model direction), executing 2) searching for a third support body again, and if the offset value exceeds the threshold value, executing 1) acquiring the first support body. And if the number of the competition selection results is more than 1, selecting the optimal support body as a third support body according to a preset principle. The preset principle can be any one or any combination of stability, distance, angle, support length, support position and the like based on a triangle. Continuing to execute the next step, namely 4), finally traversing all the supports according to the content of the embodiment, and constructing the connection relation among all the supports. In the construction process, preset parameters and principles are used, and finally, support connection is generated, that is, support reinforcement is performed, as shown in fig. 3.
It should be further noted that the preset parameters are as follows:
1) a support connection diameter R, a minimum distance L1 (L1 > = 0) of the support connection starting point from the support end a, a minimum distance L2 (L2 > = 0) of the support connection ending point from the support end B;
2) in the length range of the supporting connection, Lmin-Lmax specify the length, and the included angle A between the supporting connection and the supporting body (the included angle A ' between the supporting connection and the plane of the tray can also be used for representing the included angle A ', A ' = 90-A);
3) the geometry of the supporting connection can be a cylinder, an octagonal column and the like;
4) the spatial relationship of the multiple support connections generated between the two supports is diversified: parallel, crossed and separated;
5) the spacing between adjacent support connections is user adjustable.
In the parallel supporting and reinforcing mode, two connected supports are obtained, a shorter support mark position Z1 and the other mark position Z2 and the end point of Z1 close to the tray are marked as A, a supporting and connecting starting point O1 is set at the position of L1 distance from the A point, the end point E1 of the supporting and connecting is calculated on Z2 according to preset supporting and connecting parameters (length, angle and end distance L2), and the supporting and connecting is generated according to the starting point, the end point, the shape and the diameter. And calculating a starting point O2 of the support connection on the Z1 according to the O1 and a preset support connection distance, and calculating an end point E2 of the support connection on the Z2 according to preset support connection parameters. In this way all supporting connections between two connected supports are created.
The crossed supporting and reinforcing mode is to obtain two connected supporting bodies, wherein the end point of any one of the supporting body marking position Z1 and the other marking position Z2 and Z1 close to the tray is marked as A, the length part from the A point L1 is set as a starting point O11 of the supporting connection, the end point E11 of the supporting connection is calculated on Z2 according to preset supporting connection parameters (length, angle and end distance L2), and the supporting connection is generated according to the starting point, the end point, the shape, the diameter and the like. With Z2 as the starting point of the strut connection, the strut connection starting point O12 and the strut connection end point E12 are generated in the above-described manner, and the strut connection is generated in accordance with the starting point, the end point, the shape, the diameter, and the like. And calculating a starting point O21 of the support connection on the Z1 according to the O11 and a preset support connection distance, and calculating an end point E21 of the support connection on the Z2 according to preset support connection parameters. In this way all supporting connections between two connected supports are created.
The separated support reinforcement mode is to obtain two connected support bodies, and if the lengths of the two connected support bodies are different, the number of the support connections generated on the different support bodies by the starting point of the first support connection is different.
Through the steps, the technical problems that in order to improve the support stability, the existing method is to add support connection between the support bodies, only the support connection between every two support bodies is considered, and the spatial relationship between the support bodies is not considered, so that the support connection only strengthens the strength of the local support in a single direction, and the support body reinforcement in all directions of the whole body cannot be carried out are solved.
Example two
Fig. 2 is a block diagram of a 3D printing support body reinforcing apparatus according to an embodiment of the present invention, as shown in fig. 2 and 4, the apparatus includes:
an obtaining module 20, configured to obtain a support body set.
Specifically, in order to obtain the support situation when the 3D printing model is generated, the embodiment of the present invention first obtains information of all supports, where the supports are used to support the 3D model structure, and one 3D model needs several supports to support when being generated, but only part of the supports need to be processed in a reinforcing manner, so as to increase the fixity and stability during the 3D printing process.
The support is a main body of the support, is parallel to the printing direction and is perpendicular to the tray surface, and the support is a general finger and can be a part of one support or the whole support. The shape of the support may be a cylinder, a cone, a frustum, an octahedron, or the like, and is generally represented by three-dimensional starting point coordinates (X1, Y1, Z1) and three-dimensional ending point coordinates (X2, Y2, Z2), may be represented by three-dimensional starting point coordinates (X1, Y1, Z1) and a length L, and may be represented by three-dimensional ending point coordinates (X2, Y2, Z2) and a length L. For example, the support body is connected at both ends to a support frame (indirectly connected to the model) and to a support base (indirectly connected to the tray) or tray.
And the selection module 22 is used for selecting the support body to be connected from the support body set according to preset parameters.
Specifically, in order to obtain the support to be connected in the embodiment of the present invention, after the information of the support is obtained, the shortest support length capable of generating the support connection needs to be calculated, and the preset parameters or conditions are as follows:
4) support connection diameter R
5) Minimum distance L1 from support connection starting point to support body end A (L1 > = 0)
6) Minimum distance L2 from support connection end to support body end B (L2 > = 0)
Using L to identify the length of the shortest support that can generate a support connection, wherein: l = L1 + L2, if L < diameter of the support connection R, then L = R. In addition, L may be manually input by the user, in addition to being obtained by the above calculation. L is used to determine whether the support is conditioned for generating a support connection, i.e. too short a support does not generate a support connection, wherein L1, L2, R are user adjustable.
For example, the struts in the generated struts are obtained and put into the set S1, the struts in the set S1 are traversed, the lengths of the struts are calculated, whether the lengths are larger than or equal to the length L of the shortest strut capable of generating the support connection is judged, and if the lengths are larger than or equal to the length L of the shortest strut capable of generating the support connection, the struts are added into the set S2 of the struts to be subjected to support connection.
A mapping module 24, configured to generate two-dimensional mapping information according to the support to be connected, where the two-dimensional mapping information includes: a set of projection points, and a two-dimensional mapping table.
Optionally, the mapping module includes: the projection unit is used for projecting the coordinates of the central point of the support body to be connected to a first plane to obtain the projection point set; the first generating unit is used for generating the two-dimensional mapping table according to the projection point set, wherein the two-dimensional mapping table represents the mapping relation between the support body to be connected and the projection point set.
Specifically, after the support bodies to be connected are obtained, in order to facilitate obtaining connection relation data between the support bodies, two-dimensional mapping information needs to be generated according to the support bodies to be connected, where the two-dimensional mapping information includes: a set of projection points, and a two-dimensional mapping table. The two-dimensional mapping information needs to be obtained by projecting a solid support onto a certain plane. For example, the center point of the support is projected onto the plane of the tray, the center coordinates of the area surrounded by all the central bodies are calculated, and the support closest to the center coordinates is acquired as the first support.
And the reinforcing module 26 is configured to perform support body reinforcement according to the two-dimensional mapping information and the support body to be connected.
Optionally, the reinforcement module includes: the communication unit is used for generating a communication relation according to the two-dimensional mapping information; and the reinforcing unit is used for generating support connection according to the communication relation and the support body to be connected.
Optionally, the communication unit includes: the establishing unit is used for establishing a connected graph according to the projection point set and a preset stability condition; and the second generation unit is used for generating a connected relation according to the connected graph and the two-dimensional mapping table.
Specifically, the two-dimensional mapping information obtained according to the embodiment of the present invention is generated by generating a connectivity graph and connectivity on a two-dimensional plane graph, and performing support connection reinforcement according to the generated connectivity.
According to the first support body of the above embodiment, the starting point of the support connection is calculated on the first support body according to the preset parameters (the minimum distance L1 from the support connection starting point to the support body end, the diameter of the support connection, and the like). With the starting point as the center, a support body meeting the conditions is searched in a three-dimensional space range based on parameters such as preset length ranges (Lmax, Lmin) and an included angle A between the support body and the starting point. If the number is 1, executing the following steps: 3) searching a third support body, if the searched number is 0, adjusting the coordinates of the support connection starting point (offsetting the preset value towards the model direction), executing 2) searching a second support body again, and if the offset value exceeds the threshold value, executing 1) acquiring the first support body. And if the searched number is more than 1, selecting the optimal support body as a second support body according to a preset principle. The preset principle can be any one or any combination of distance-based, support length-based, support position, etc. The next step, i.e. 3), is carried out to project the starting points of the first and second support onto the pallet plane, obtaining the two-dimensional coordinate points C1, C2. And calculating the minimum distance Dmax = Lmax SinA in the horizontal direction of the support, and the maximum distance Dmin = Lmix SinA in the horizontal direction, connecting two points of C1 and C2 respectively by taking C1 and C2 as centers, wherein the radius is Dmin-Dmax, and searching the support body in a specified angle (Amin-Amax) to obtain the support body.
In the above determination, the Z value is not considered, and it is necessary to further select a support based on the parameters (starting point position, length, angle) of the support connection. If the number of the competition selection results is 1, executing the next step of 4) if the number of the competition selection results is 0, adjusting the coordinates of the support connection starting point (offsetting the preset value towards the model direction), executing 2) searching for a third support body again, and if the offset value exceeds the threshold value, executing 1) acquiring the first support body. And if the number of the competition selection results is more than 1, selecting the optimal support body as a third support body according to a preset principle. The preset principle can be any one or any combination of stability, distance, angle, support length, support position and the like based on a triangle. Continuing to execute the next step, namely 4), finally traversing all the supports according to the content of the embodiment, and constructing the connection relation among all the supports. In the construction process, preset parameters and principles are used, and finally, support connection is generated, that is, support reinforcement is performed, as shown in fig. 3.
It should be further noted that the preset parameters are as follows:
1) a support connection diameter R, a minimum distance L1 (L1 > = 0) of the support connection starting point from the support end a, a minimum distance L2 (L2 > = 0) of the support connection ending point from the support end B;
2) in the length range of the supporting connection, Lmin-Lmax specify the length, and the included angle A between the supporting connection and the supporting body (the included angle A ' between the supporting connection and the plane of the tray can also be used for representing the included angle A ', A ' = 90-A);
3) the geometry of the supporting connection can be a cylinder, an octagonal column and the like;
4) the spatial relationship of the multiple support connections generated between the two supports is diversified: parallel, crossed and separated;
5) the spacing between adjacent support connections is user adjustable.
In the parallel supporting and reinforcing mode, two connected supports are obtained, a shorter support mark position Z1 and the other mark position Z2 and the end point of Z1 close to the tray are marked as A, a supporting and connecting starting point O1 is set at the position of L1 distance from the A point, the end point E1 of the supporting and connecting is calculated on Z2 according to preset supporting and connecting parameters (length, angle and end distance L2), and the supporting and connecting is generated according to the starting point, the end point, the shape and the diameter. And calculating a starting point O2 of the support connection on the Z1 according to the O1 and a preset support connection distance, and calculating an end point E2 of the support connection on the Z2 according to preset support connection parameters. In this way all supporting connections between two connected supports are created.
The crossed supporting and reinforcing mode is to obtain two connected supporting bodies, wherein the end point of any one of the supporting body marking position Z1 and the other marking position Z2 and Z1 close to the tray is marked as A, the length part from the A point L1 is set as a starting point O11 of the supporting connection, the end point E11 of the supporting connection is calculated on Z2 according to preset supporting connection parameters (length, angle and end distance L2), and the supporting connection is generated according to the starting point, the end point, the shape, the diameter and the like. With Z2 as the starting point of the strut connection, the strut connection starting point O12 and the strut connection end point E12 are generated in the above-described manner, and the strut connection is generated in accordance with the starting point, the end point, the shape, the diameter, and the like. And calculating a starting point O21 of the support connection on the Z1 according to the O11 and a preset support connection distance, and calculating an end point E21 of the support connection on the Z2 according to preset support connection parameters. In this way all supporting connections between two connected supports are created.
The separated support reinforcement mode is to obtain two connected support bodies, and if the lengths of the two connected support bodies are different, the number of the support connections generated on the different support bodies by the starting point of the first support connection is different.
According to another aspect of the embodiments of the present invention, there is also provided a non-volatile storage medium including a stored program, wherein the program controls a device in which the non-volatile storage medium is located to execute a 3D printing support body reinforcing method when running.
According to another aspect of the embodiments of the present invention, there is also provided an electronic device, including a processor and a memory; the memory has stored therein computer readable instructions for execution by the processor, wherein the computer readable instructions when executed perform a method of 3D printing support reinforcement.
Through the steps, the technical problems that in order to improve the support stability, the existing method is to add support connection between the support bodies, only the support connection between every two support bodies is considered, and the spatial relationship between the support bodies is not considered, so that the support connection only strengthens the strength of the local support in a single direction, and the support body reinforcement in all directions of the whole body cannot be carried out are solved.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
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 can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A3D printing support body reinforcing method is characterized by comprising the following steps:
acquiring a support body set;
selecting a support body to be connected from the support body set according to preset parameters;
generating two-dimensional mapping information according to the support body to be connected, wherein the two-dimensional mapping information comprises: a projection point set and a two-dimensional mapping table;
and executing support body reinforcement according to the two-dimensional mapping information and the support body to be connected.
2. The method according to claim 1, wherein the generating two-dimensional mapping information from the support to be connected comprises:
projecting the coordinates of the central point of the support body to be connected to a first plane to obtain the projection point set;
and generating the two-dimensional mapping table according to the projection point set, wherein the two-dimensional mapping table represents the mapping relation between the support body to be connected and the projection point set.
3. The method according to claim 1, wherein the performing support body reinforcement according to the two-dimensional mapping information and the support body to be connected comprises:
generating a communication relation according to the two-dimensional mapping information;
and generating support connection according to the communication relation and the support body to be connected.
4. The method of claim 3, wherein generating connectivity from the two-dimensional mapping information comprises:
establishing a connected graph according to the projection point set and a preset stability condition;
and generating a connected relation according to the connected graph and the two-dimensional mapping table.
5. The utility model provides a 3D prints support body reinforcing apparatus which characterized in that includes:
the acquisition module is used for acquiring a support body set;
the selection module is used for selecting a support body to be connected from the support body set according to preset parameters;
the mapping module is used for generating two-dimensional mapping information according to the support body to be connected, wherein the two-dimensional mapping information comprises: a projection point set and a two-dimensional mapping table;
and the reinforcing module is used for executing support body reinforcing according to the two-dimensional mapping information and the support body to be connected.
6. The apparatus of claim 5, wherein the mapping module comprises:
the projection unit is used for projecting the coordinates of the central point of the support body to be connected to a first plane to obtain the projection point set;
the first generating unit is used for generating the two-dimensional mapping table according to the projection point set, wherein the two-dimensional mapping table represents the mapping relation between the support body to be connected and the projection point set.
7. The apparatus of claim 5, wherein the reinforcement module comprises:
the communication unit is used for generating a communication relation according to the two-dimensional mapping information;
and the reinforcing unit is used for generating support connection according to the communication relation and the support body to be connected.
8. The apparatus of claim 7, wherein the communication unit comprises:
the establishing unit is used for establishing a connected graph according to the projection point set and a preset stability condition;
and the second generation unit is used for generating a connected relation according to the connected graph and the two-dimensional mapping table.
9. A non-volatile storage medium, comprising a stored program, wherein the program, when executed, controls an apparatus in which the non-volatile storage medium is located to perform the method of any one of claims 1 to 4.
10. An electronic device comprising a processor and a memory; the memory has stored therein computer readable instructions for execution by the processor, wherein the computer readable instructions when executed perform the method of any one of claims 1 to 4.
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