Abstract
A computer-implemented method for dividing a virtual three-dimensional overall model of a body into at least two virtual partial models, includes: Creating a virtual separating surface for the overall model of the body, which has a three-dimensional cell-conforming shape; Creating the overall model of the body with a lattice structure formed from a plurality of cells; and Dividing the overall model along the cell-conforming separating surface into two partial models, so that when the overall model is divided, common struts of the lattice structure, which are each part of at least one cell of one partial model and part of at least one adjacent cell of the other partial model are divided by means of the cell-conforming separating surface in such a way that the corresponding cells remain closed.
Claims
1. Method, in particular a computer-implemented method, for dividing a virtual three-dimensional overall model of a body into at least two virtual partial models, comprising the following steps: Creating a virtual separating surface for the overall model of the body, which has a three-dimensional cell-conforming shape; Creating the overall model of the body with a lattice structure formed from a plurality of cells; and Dividing the overall model along the cell-conforming separating surface into two partial models, so that when the overall model is divided, common struts of the lattice structure, which are each part of at least one cell of one partial model and part of at least one adjacent cell of the other partial model are divided by means of the cell-conforming separating surface in such a way that the corresponding cells remain closed.
2. Method according to claim 1, wherein the common struts are divided in their respective longitudinal direction.
3. Method according to claim 1, wherein the common struts are divided in such a way that the parts of the respective common strut each extend without gaps and/or continuously between two nodes of the respective corresponding cell.
4. Method according to claim 1, wherein at least one of the common struts is divided in such a way that the respective parts are symmetrical or asymmetrical to one another.
5. Method according to claim 1, wherein the method comprises the following steps: Providing a three-dimensional virtual base body; Defining at least one cut surface dividing the base body, in particular a flat, curved and/or kinked cut surface; and or Filling a volume of the base body with a plurality of whole unit cells.
6. Method according to claim 1, wherein the three-dimensional cell-conforming shape of the separating surface is determined by an algorithm and/or by means of a cell surface of at least some of the whole unit cells located in the region of the cut surface.
7. Method according to claim 1, wherein, in order to create the three-dimensional cell-conforming shape of the separating surface at least the whole unit cells located in the region of the cut surface are assigned on each of the two sides to the cut surface so that each of the two sides of the cut surface is assigned to a respective unit cell group which has a three-dimensional cell-conforming abutment surface in the region of the cut surface.
8. Method according to claim 1, wherein the whole unit cells are assigned to one of the two sides of the cut surface via their center point, wherein the whole unit cells are preferably assigned to the side of the cut surface on which its center point is located.
9. Method according to claim 1, wherein the shape of the separating surface is created correspondingly and/or on the basis of the three-dimensional cell-conforming abutment surface of one of the two unit cell groups.
10. Method according to claim 1, wherein the unit cells are intersected with an outer surface of the base body, in particular to form a surface lattice structure.
11. Method according to claim 1, wherein, in order to create the lattice structure of the overall model, the unit cells are replaced with struts which extend along edges of the unit cells.
12. Method according to claim 1, wherein the method has at least one of the following steps: Matching at least one external dimension of the virtual three-dimensional overall model of the body with at least one corresponding internal dimension of a limited production area of an additive manufacturing device in at least one spatial direction; Dividing the overall model into the at least two virtual three-dimensional partial models when the external dimension of the overall model exceeds the corresponding internal dimension of the production area; Forming at least one connecting element, which connects the at least two partial models to one another in such a movable manner that they move relative to one another from a production position in which corresponding joining surfaces of the partial models are spaced apart to a joining position in which the corresponding joining surfaces of the partial models abut one another; and/or Creating a virtual three-dimensional production model in the production position of the partial models.
13. Method according to claim 1, wherein at least one of the method steps is carried out by a user with a computing unit, in particular a computer program stored thereon and/or artificial intelligence, and/or by such a computing unit.
14. Computing unit for dividing a virtual three-dimensional overall model of a body into at least two virtual partial models, in particular with a computer program and/or artificial intelligence stored thereon, wherein the computing unit is designed to carry out at least part of the method steps of a method according to claim 1.
15. Computer program and/or artificial intelligence which, when executed by a computing unit, causes said unit to carry out at least part of the method steps of a method for dividing a virtual three-dimensional overall model of a body into at least two virtual partial models according to claim 1.
16. Computer-readable storage medium with a virtual three-dimensional overall model of a body stored at least partially thereon, which is divided into at least two virtual partial models, with a method, a computing unit, a computer program and/or an artificial intelligence according to claim 1.
17. Production method for producing a body, comprising the following steps: Creating a virtual three-dimensional overall model of the body, which is divided into at least two virtual partial models, and/or a virtual three-dimensional production model in the production position of the partial models with a method according to claim 1; Creating production data for an additive production device based on the divided, virtual, three-dimensional overall model and/or production model; and Producing the body with the additive production device based on the production data.
18. Production method according to claim 17, wherein, based on the partial models, partial bodies are manufactured, with at least one of the partial bodies being produced in an additive production process, with the at least two partial bodies being exposed to a solvent atmosphere in a chamber, so that a surface of the partial bodies is smoothed, and that the at least two partial bodies are placed in the chamber in such a way that they are on at least one joining surface and that the solvent atmosphere thus forms an integral connection between the at least two partial bodies on the at least one joining surface.
19. Body, wherein the body is produced with a production method according to claim 1.
20. Device with a computing unit for creating a virtual three-dimensional overall model of a body, and/or with an additive production device for producing the body, wherein the computing unit is designed to carry out at least some of the method steps of a method for creating a virtual three-dimensional overall model of the body according to claim 1.
Description
[0085] Further advantages of the invention are described in the following embodiments. In the drawings:
[0086] FIG. 1 is a schematic representation of a device with a computing unit, an additive production device, a body to be produced and a storage medium,
[0087] FIG. 2 is a perspective view of a base body with a cut surface,
[0088] FIG. 3 is a perspective view of a basic body filled with unit cells,
[0089] FIG. 4 is an assignment of center points of the unit cells to one side of the cut surface,
[0090] FIG. 5 is an assignment of the unit cells to one side of the cut surface,
[0091] FIG. 6 is a perspective view of a three-dimensional cell-conforming cut surface,
[0092] FIG. 7 is a perspective view of an overall model with a lattice structure formed from a large number of cells,
[0093] FIG. 8 is a first partial model with the cell-conforming dividing cut surface,
[0094] FIG. 9 is a detailed sectional view of the two partial models divided from each other in the region of the separating surface,
[0095] FIG. 10 is a perspective view of the overall model divided into two partial models,
[0096] FIGS. 11 and 12 are schematic representations of the method for creating a virtual three-dimensional production model of a body,
[0097] FIG. 13 is a schematic representation of a device with a computing unit and an additive production device when producing a body,
[0098] FIG. 14 is a schematic representation of a body in the joining position in a chamber for the smoothing and/or for the positive connection,
[0099] FIG. 15 is a two-dimensional diagram of partial bodies before they are joined and
[0100] FIG. 16 is a two-dimensional diagram of the production of the body by positively connecting the partial bodies by using a solvent atmosphere.
[0101] In the following description of the figures, the same reference signs are used for features that are identical and/or at least comparable in the various figures. The individual features, their design and/or mode of action are generally explained in detail when they are mentioned the first time. If individual features are not explained in detail again, their design and/or mode of action corresponds to the design or mode of action of the features already described that have the same effect or the same name.
[0102] FIG. 1 shows a schematic representation of a device 1 with a computing unit 2, an additive production device 3 and a body 4 to be produced. The body 4 to be produced is to be understood as the body 4 that is to be produced with the aid of the production method and/or the additive production device 3. A virtual three-dimensional overall model 5 is formed and/or created with the aid of the computing unit 2 based on the body 4 to be produced. The overall model 5 and the body 4 to be produced each have the same external dimensions AM in the three spatial directions, i.e. in the longitudinal direction LR, the transverse direction QR and the vertical direction HR. The production device 3 has a limited production area 6. For this purpose, the production area 6 spans a limited internal dimension IM in each of the three spatial directions, i.e., in the longitudinal direction LR, the transverse direction QR and the vertical direction HR. This can make it necessary for the overall model 5 to be divided so that it can be produced, in particular printed, in the limited production area 6.
[0103] The computing unit 2 can comprise at least one input interface 7 for detecting, inputting and/or determining the at least one external dimension AM and/or internal dimension IM. Using the input interface 7, geometrical data 8 of the body 4 to be produced and/or the production device 3 can be recorded, entered and/or determined automatically and/or with the help of a user. The overall model 5 can be created on the basis of this geometrical data 8. Additionally or alternatively, a digital image of the production device 3 and/or the internal dimension IM can be entered and/or stored in the computing unit 2. Additionally or alternatively, the computing unit 2, as shown in the embodiment, can have an output interface 9 for outputting production data 10 to the production device 3 and/or to a computer-readable storage medium 11. This production data 10 can be created with the aid of the computing unit 2.
[0104] A method, in particular a computer-implemented method, for dividing the virtual three-dimensional overall model 5 is illustrated in FIGS. 2 to 10. As mentioned above, it may be necessary for the overall model 5 to be divided into at least two partial models 13 so that it can be produced in a limited production area 6 of the production device 3, in particular a 3D printer.
[0105] For this purpose, according to FIG. 2, a three-dimensional virtual base body 22 is provided first. This can be done manually by a user in a corresponding program. Alternatively, the geometrical data 8 of the base body 22 can also be imported via an interface. The base body 22 reproduces the basic geometry of the body 4 to be printed. At least one cut surface 23 dividing the base body 22 is then defined. The exact position and/or geometry of the cut surface 23 can be defined manually by a user or automatically by the computing unit 2. In this case, the cut surface 23 can be flat, curved and/or kinked. Alternatively or additionally, the cut surface can also have a free-form geometry. Furthermore, the cut surface can be composed of a plurality of different and/or identical portions.
[0106] Subsequently, in a following step according to FIG. 3, the base body 22, in particular its volume, is filled with a plurality of unit cells 24. The volume of the base body 22 is preferably completely filled with such unit cells 24. For reasons of clarity, only two of these unit cells are provided with a reference number in FIG. 3. The body 22 may be filled with a single type of unit cell 24. Alternatively, different types of unit cells 24, which differ from one another in terms of their external shape, can be used. Each of these unit cells 24 comprises a plurality of edges 25 which define the outer shape of the respective unit cell 24. The outer shape of the respective unit cell 24 is also formed by a corresponding cell surface 26. Furthermore, each of these unit cells 24 includes a center point 27 (see FIG. 4).
[0107] An essential step of the method consists in the creation of a virtual separating surface 28 for the overall model, as shown in FIG. 6, with the separating surface 28 having a three-dimensional, cell-conforming shape. The term “cell-conforming” is to be understood as referring to a shape of the separating surface 28 which runs on the outer surface of several of these unit cells 24 and therefore does not divide any of the unit cells 24. Basically, the separating surface 28 runs on the edges 25 and/or cell surfaces 26 of the adjacent unit cells 24.
[0108] The three-dimensional cell-conforming shape of the separating surface 28 is preferably created by an algorithm that is stored on the computing unit 2. The three-dimensional cell-conforming shape of the separating surface 28 is created by using the cell surface 26 and/or the edges 25 of the unit cells 24 adjacent to the respective cut surface 23. For this purpose, according to FIG. 4, the unit cells 24 are first assigned relative to the cut surface 23. Accordingly, the cut surface 23 comprises a first side 29 and an opposite second side 30. At least the whole unit cells 24 located in the region of the cut surface 23 are each assigned to one of the two sides 29, 30 of the cut surface 23. A corresponding assignment preferably takes place at least for those unit cells 24 that are cut by the cut surface 23. In particular, however, all unit cells 24 with which the base body 22 was filled are assigned to one side 29, 30 of the cut surface 23.
[0109] As can be seen from FIGS. 4 and 5, the unit cells 24 are assigned via their respective center points 27. This way, the whole unit cells 24 are assigned to the side 29, 30 of the cut surface 23 on which their center point 27 is located as well. To visualize the assignment, all center points 27 of the unit cells 24 that are assigned to the first side 29 are shown as dots in FIGS. 4 and 5, and all center points 27 of the unit cells 24 that are assigned to the second side 30 are shown as circles.
[0110] According to FIG. 5, a respective unit cell group 31, 32 is assigned to each of the two sides 29, 30 of the cut surface 23 at the end of this method step. Alternatively, an assignment can be made for only one of the two sides 29, 30 of the cut surface 23. The two unit cell groups 31, 32 have a three-dimensional cell-conforming abutting surface 33 in the region of the cut surface 23. The two unit cell groups 31, 32 lie flush against one another on this abutting surface 33. Due to the illustration, only the outer contour of this abutting surface 33 can be seen in FIG. 5.
[0111] The separating surface 28 shown in FIG. 6 is now created by using at least one of the two unit cell groups 31, 32. Accordingly, in a further method step, the shape of the separating surface 28 is created correspondingly and/or using the three-dimensional cell-conforming abutting surface 33 of at least one of the two unit groups 31, 32. As can be seen from FIG. 6, the separating surface 28 thus has a cell-conforming shape which corresponds to the edges 25 and/or the cell surface 26 of those unit cells 24 which form the abutting surface 33 of the two unit groups 31, 32. The separating surface 28 thus has edges 25 and/or cell surfaces 26 of the unit cells 24 adjacent to it, which define its shape and/or geometry.
[0112] Before, during or after the creation of the virtual three-dimensional separating surface 28, the overall model 5 of the body 4 shown in FIG. 7 is created from the base body 22 shown in FIG. 3, which has been filled with a plurality of complete and/or closed unit cells 24. In this case, the overall model 5 has a plurality of cells 34 which together form a lattice structure 35. The overall model 5 of the body 4 is a volume model. For this purpose, the unit cells 24 shown in FIG. 3 are replaced with struts 36, which themselves have a volume. The struts 36 extend along the edges 25 of the unit cells 24 and form the cells 34 which correspond to the unit cells 24 and which in turn form the lattice structure 35.
[0113] The overall model 5 shown in FIG. 7 with its lattice structure 35 can comprise a surface lattice structure 37 which forms an outer surface of the lattice structure 35. To create the surface lattice structure 37, the unit cells 24 shown in FIG. 3 are intersected with an outer surface 38 of the base body 22 shown in FIG. 2.
[0114] The lattice structure 35 of the overall model 5 shown in FIG. 7 can now be divided into the partial models 13a, 13b shown in FIG. 10 with and/or along the separating surface 28 shown in FIG. 6. FIG. 8 shows one of the two partial models 13a with the cell-conforming dividing cut surface 28. As can be seen from FIG. 8, the cells 34 are closed in the area of the separating surface 28. None of the struts 36 of these cells 34 are cut.
[0115] FIG. 9 shows the cell-conforming division of the overall model 5 into the two partial models 13a, 13b in a callout. Thus, the first partial model 13a has first cells 34a and the second partial model 13b has second cells 34b. Both the first cells 34a and the second cells 34b are closed. The mutually adjacent first cells 34a of the first partial model 13a and the second cells 34b of the second partial model 13b share a common strut 36, which is referred to below as common struts 39. As can be seen from FIG. 9, these common struts 39 of the lattice structure 35 are divided by means of the cell-conforming separating surface 28 in such a way that the corresponding cells 34 remain whole and/or closed. Accordingly, the common struts 39 are not divided by the cell-conforming separating surface 28 in their transverse direction, but rather in their respective longitudinal direction. As a result, the parts 40, 41 of a respective common strut 39 each extend without gaps and/or continuously between two nodes 42, 43 of the respective corresponding cell 34. The corresponding cells 34a, 34b thus remain complete and/or closed. This ensures a very high stability of the lattice structure 35. In the embodiment illustrated in FIG. 9, the common struts 39 are divided axially symmetrical. Alternatively, however, an asymmetrical division can also take place, so that the two parts 40, 41 are designed differently from one another.
[0116] FIG. 10 shows the overall model 5 with its partial models 13a, 13b. Both partial models 13a, 13b now have a mutually corresponding joining surface 14a, 14b due to the cell-conforming division. Each of these mutually corresponding joining surfaces 14a, 14b is formed from parts 40, 41 of the common struts 39. When these two part models 13a, 13b are joined together, the two parts 40, 41 that correspond to one another again form a complete common strut 39.
[0117] FIGS. 11 and 12 show an exemplary method sequence of a method for creating a virtual three-dimensional production model 12 of a body 4. This method can follow the above method for dividing the overall model 5, but it is possible as well for the above features to be present individually or in any combination. The method sequence described here can be carried out completely or partially in the computing unit 2 of FIG. 1. The overall model 5 and the limited production area 6 are shown in FIG. 11. In the exemplary embodiment shown, the external dimension AM of the overall model 5 exceeds the corresponding internal dimension IM of the production area 6, at least in the longitudinal direction LR. Additionally or alternatively, the external dimension AM of the overall model 5 can exceed the corresponding internal dimension IM of the production area 6 in another spatial direction, for example in the transverse direction QR. This can be adjusted in an additional and/or in the same method step.
[0118] FIG. 12 shows a method step following the method step of FIG. 11. The overall model 5 of the embodiment in FIG. 11 was divided into two partial models 13. It is also conceivable that the overall model 5 is divided into a number of partial models 13. Each of the partial models 13 now has a joining surface 14, which can be used for joining purposes in a later production process. In addition, a connecting element 15, which connects the two part models 13 to one another, was formed for this purpose. The two partial models 13 are movably connected to one another by means of the connecting element 15 in such a way that they can be moved relative to one another from a production position shown here, in which the corresponding joining surfaces 14 of the partial models 13 are spaced apart, to a joining position in which the corresponding joining surfaces 14 of the partial models 13 abut each other. A body 4 in the joining position is shown in FIG. 14, for example. In the embodiment shown, the connecting element 15 is designed as a connecting joint, by means of which the two partial models 13 can be pivoted relative to one another.
[0119] In addition to the two partial models 13, two sub-partial models 16 are shown in FIG. 12, with one of the two partial models being one of the sub-partial models 16. Additionally or alternatively, the other partial model 13 can be divided into sub-partial models 16. It is also conceivable that at least one of the partial models 13 is divided into a number of sub-partial models 16. An additional optional iteration step of the method was carried out in this regard. In this optional iteration step, at least one of the external dimensions AM of the partial models 13 located in the production position was compared to the corresponding internal dimension IM of the production area 6. In the embodiment shown, the external dimension AM is compared to the corresponding internal dimension IM in the transverse direction QR. Since the external dimension AM of one of the partial models 13 in the production position exceeds the internal dimension IM of the production area 6 in the transverse direction QR, this partial model 13 was divided into two sub-partial models 16 and moved into the production position with the aid of a further connecting element 15′. In the embodiment shown, the two partial models 13 and the sub-partial models 16 are arranged in the production position one above the other in the vertical direction HR.
[0120] In addition, at least one locking element 17 is advantageously arranged on at least one of the partial models 13 and/or sub-partial models 16. In the embodiment shown, a part of the locking element 17 is arranged on each of the two partial models 13. The locking element 17 is designed here as a detent and receptacle for the detent. The locking element 17 can lock the two corresponding partial models 13 in the joining position in which the two joining surfaces 14 abut one another. A body 4 in the joining position is shown in FIG. 14, for example. It is also conceivable that the locking element 17 is integrated in the connecting element 15. In addition or as an alternative, at least one of the sub-partial models 16 can have the locking element 17.
[0121] In the embodiment shown in FIG. 12, the production model 12 is thus created. The production model 12 comprises the two partial models 13, the two sub-partial models 16, the connecting elements 15, 15′ and the locking element 17. The external dimension AM of the production model 12 is less than the internal dimension IM of the production area 6 in each of the spatial directions LR, QR, HR and can thus be produced and/or created with the production device 3 of FIG. 1. For this purpose, the production data 10 is created from the production model 12 and sent to the production device 3, in particular by means of the computing unit 2 of the device 1 of the embodiment in FIG. 1. This process step is shown in FIG. 13.
[0122] FIG. 13 shows a schematic representation of a device 1 with a computing unit 2 and an additive production device 3 when producing a body 4. The computing unit 2 has already created the production model 12, in particular in accordance with the preceding description. For this purpose, the computing unit 2 can have a computer program and/or artificial intelligence which executes at least some of the method steps of the method for creating the virtual three-dimensional production model 12 of the body 4.
[0123] The production model 12 is designed similarly to the embodiment in FIG. 12. The production data 10 is then created from the production model 12 and transmitted to the production device 3 by means of the output interface 9. The production device 3 has already created the first layers of the body 4. The body 4 is made in a plurality of parts in the form of a plurality of parts 18 which are movably connected to one another via the at least one connecting element 15. In the embodiment shown, the parts 18 are in the production position. Since the embodiment shown is a powder-based 3D printing method, the production device 3 comprises a powder application unit 19 for applying a material powder and an irradiation unit 20 for solidifying the material powder. For the sake of clarity, the non-solidified powder surrounding the body 4 is not shown.
[0124] FIG. 14 is a schematic representation of a body 4 in the joining position in a chamber 21 for smoothing and/or for the positive connection. The body 4 has been created with a method and/or a device 1 according to the previous embodiments of FIGS. 1 to 13. The chamber 21 can also be part of the device 1. The production device 3 of FIGS. 1 and 13 can form the chamber 21 as well.
[0125] Following the production, which is shown in FIG. 13, the parts 18 of the body 4 were moved from the production position to the joining position by means of the connecting element 15. Since the connecting element 15 is a rotary joint in the embodiment shown, the two parts 18 of the body 4 have been pivoted into the joining position. The two corresponding joining surfaces 14 are in this joining position. In addition, as shown here, the locking element 17 can engage in such a way that the two parts 18 cannot be moved back into the production position.
[0126] In the joining position, the body 4 can be exposed to a solvent atmosphere that can be formed in the chamber 21. As a result, the surface of the body 4 can be smoothed and/or the parts 18 of the body 4 can be positively connected to one another in the region of their abutting joining surfaces 14. If the two parts 18 are positively connected to one another in the region of the joining surfaces 14, the connecting element 15 and/or the locking element 17 can then optionally be removed. As a result, protruding elements can be removed from the body 4. Additionally or alternatively, the connecting element 15 can be designed as a film hinge. Such a connecting element 15 can be formed in such a way that it does not protrude from the body 4.
[0127] FIG. 15 shows two partial bodies 44 in a two-dimensional diagram that are joined together to form the body 4. The partial bodies 44 can each be produced from a virtual partial model 13a, 13b as described above. It is possible for the features mentioned to be present individually or in any combination. Additionally or alternatively, the partial bodies 44 can be designed as a production model 12 according to the above description, wherein the partial bodies 44 are, in this case, connected to one another via at least one connecting element 15 and/or in a reduced production position relative to one another.
[0128] The two-dimensional representation serves to illustrate the principle. As a rule, the body 4 will have a three-dimensional shape according to the above description. As shown in FIG. 15, the two partial bodies 44 have a matching lattice structure 35, which is preferably divided in a cell-conforming manner in accordance with the previous description. The lattice structures 35 have a plurality of cells 34. A combination of different lattice motifs as the smallest unit of the lattice is conceivable as well.
[0129] The partial bodies 44 are delimited in such a way that only whole and/or closed cells 34 are present in the lattice structure 35. In other words, the partial bodies 44 are delimited by boundary surfaces 45 of the cells 34. Likewise, a respective joining surface 14 of the partial bodies 44, where the partial bodies 44 touch during the process (see also FIG. 16), is formed by a plurality of boundary surfaces 45 of the cells 34.
[0130] FIG. 16 shows the method for producing the composite body 4 in a two-dimensional diagram. The at least two partial bodies 44 produced in an additive production process, in particular according to the preceding description, are placed in a chamber 46 in such a way that they touch at their corresponding joining surfaces 14. A solvent atmosphere 47 is present in the chamber 46. On the one hand, the solvent atmosphere 47 smooths a surface of the partial bodies 44, in particular of the lattice structure 35. On the other hand, a positive connection is formed between the partial bodies 44 on the corresponding joining surfaces 14 that abut one another, as a result of which the assembled body 4 is produced. Due to the shape of the partial bodies 44 that is created by the boundary surfaces 45 of the cells 34, the partial bodies 44 can be positively connected.
[0131] In particular, the composite body 4 has a continuous and homogeneous lattice structure 35. Ideally, the corresponding joining surfaces 14 are no longer recognizable after the completion of the method. The solvent atmosphere 47 can be produced in the manners already described. For safety purposes, the chamber 46 is hermetically sealed, for example, during the presence of the solvent atmosphere 47. The partial bodies 44 can, for example, be placed in the chamber 46 on supports (not shown) or hung up on hooks (not shown).
[0132] The present invention is not limited to the embodiments that are illustrated and described. Modifications within the scope of the claims are just as possible as a combination of features even if these are shown and described in different embodiments.
LIST OF REFERENCE SIGNS
[0133] 1 Device [0134] 2 Computing unit [0135] 3 Production device [0136] 4 Body [0137] 5 Overall model [0138] 6 Production area [0139] 7 Input interface [0140] 8 Geometrical data [0141] 9 Output interface [0142] 10 Production data [0143] 11 Storage medium [0144] 12 Production model [0145] 13 Partial model [0146] 14 Joining surface [0147] 15, 15′ Connecting element [0148] 16 Sub-partial model [0149] 17 Locking element [0150] 18 Parts [0151] 19 Powder application unit [0152] 20 Irradiation unit [0153] 21 Chamber [0154] 22 Base body [0155] 23 Cut surface [0156] 24 Unit cell [0157] 25 Edges [0158] 26 Cell surface [0159] 27 Center point [0160] 28 Cut surface [0161] 29 First side of the cut surface [0162] 30 Second side of the cut surface [0163] 31 First unit cell group [0164] 32 Second unit cell group [0165] 33 Abutting surface [0166] 34 Cells [0167] 35 Lattice structure [0168] 36 Strut [0169] 37 Surface lattice structure [0170] 38 Exterior surface of the base body [0171] 39 Common struts [0172] 40 First part of the divided common strut [0173] 41 Second part of the divided common strut [0174] 42 First node [0175] 43 Second node [0176] 44 Partial body [0177] 45 Boundary surface [0178] 46 Chamber [0179] 47 Solvent atmosphere [0180] AM External dimension [0181] IM Internal dimension [0182] LR Longitudinal direction [0183] QR Transverse direction [0184] HR Vertical direction
