Method and planning device for planning locally selective irradiation of a working region with an energy beam, method and manufacturing device for additively manufacturing a component from a powder material, computer program and storage medium

Abstract

The invention relates to a method for planning locally selective irradiation of a working region (7) with at least one energy beam (13) in order to produce a component (5) in layer-by-layer by means of the at least one energy beam (13) from a plurality of powder material layers (19) of a powder material (9) arranged in the working region (7) in succession in a layer sequence, wherein - a plurality of vector groups (23) each having a plurality of irradiation vectors (25) are specified for at least one working powder material layer (21) of the powder material layers (19), wherein - a check is carried out as to whether a cross-sectional geometry of the component (5) in the working powder material layer (21) has a vector group interruption (29), wherein - an irradiation sequence of the vector groups (23) over time is determined such that first irradiation vectors (25.1) of different vector groups (23) arranged on a common side (31, 33) of the vector group interruption (29) are irradiated before second irradiation vectors (25.2) arranged on a side (31, 33) that is spaced apart from the common side (31, 33) by the vector group interruption (29), wherein, in particular, - an irradiation plan for the locally selective irradiation of the working region (7) with the at least one energy beam (13) is obtained.

Description

[0001] DESCRIPTION

[0002] Method and planning device for planning a locally selective irradiation of a work area with an energy beam, method and manufacturing device for the additive manufacturing of a component from a powder material, computer program and storage medium

[0003] The invention relates to a method and a planning device for planning a locally selective irradiation of a work area with at least one energy beam, a method and a manufacturing device for the additive manufacturing of components from a powder material, a computer program and a machine-readable storage medium.

[0004] In methods for the additive manufacturing of components from a powder material by locally selective irradiation of a work area with at least one energy beam, the irradiation of the work area is typically carried out by successively shifting the at least one energy beam along irradiation vectors grouped into vector groups, with the irradiation vectors being processed group by group. With more complex geometries, vector group interruptions can occur, for example, if one part of a vector group is separated from another part of the same vector group—or even a first vector group from a second vector group—by a recess in the component to be manufactured.This results in a scanner device intended for the displacement of at least one energy beam having to perform a so-called jump, with part of the displacement of the scanner device taking place with the energy beam switched off or masked out in order to avoid irradiating and thus solidifying the powder material arranged in the area of ​​the recess. Since the jump time elapsed during the execution of the jump is lost for the actual production of the component, the jump is unproductive and leads to an uneconomically high overall production time for the component. Depending on the component geometry, a considerable number of such unproductive jump times can occur. Another problem is that long jumps lead to unclear cooling behavior of the powder material, which can adversely reduce the quality of the manufactured components.The invention is therefore based on the object of providing a method and a planning device for planning a locally selective irradiation of a work area with at least one energy beam, a method and a manufacturing device for the additive manufacturing of components from a powder material, a computer program and a machine-readable storage medium, wherein the aforementioned disadvantages are at least reduced, preferably avoided.

[0005] The object is achieved by providing the present technical teaching, in particular the teaching of the independent claims as well as the embodiments disclosed in the dependent claims and the description.

[0006] The object is achieved in a first aspect in particular by providing a method - hereinafter referred to as a planning method - for planning a locally selective irradiation of a work area with at least one energy beam in order to produce a component layer by layer from a plurality of powder material layers of a powder material arranged in a layer sequence in the work area in time succession by means of the at least one energy beam, wherein

[0007] - for at least one working powder material layer of the powder material layers, a plurality of vector groups each having a plurality of irradiation vectors is defined, wherein

[0008] - it is checked whether a cross-sectional geometry of the component in the working powder material layer has a vector group interruption, wherein a temporal irradiation sequence of the vector groups is determined such that first irradiation vectors of different vector groups arranged on a common side of the vector group interruption are irradiated before second irradiation vectors which are arranged on a side spaced apart from the common side by the vector group interruption.

[0009] Advantageously, the planning method proposed here improves or optimizes the temporal irradiation sequence of the vector groups in such a way that, in particular, long jumps are avoided. At the same time, the disadvantages associated with such jumps, both with regard to production time and cooling behavior, are at least reduced, and preferably avoided.

[0010] In particular, an irradiation plan for the locally selective irradiation of the working area with the energy beam in the at least one powder material layer is obtained - in particular as a result or product of the planning process.

[0011] In the context of the present technical teaching, a vector group interruption is understood in particular to be a structure of the cross-sectional geometry of the component to be manufactured in the working powder material layer, which requires a geometric distance between boundary vectors adjacent to the vector group interruption—in particular, boundary vectors spaced apart along a test direction. The geometric distance is in particular a finite distance, in particular a distance that is greater than an average distance between immediately adjacent irradiation vectors within a vector group comprising at least one of the boundary vectors. Boundary vectors are understood to be irradiation vectors that directly border the vector group interruption.The boundary vectors can belong to the same vector group, in particular to different sub-vector groups of the same vector group, or to different vector groups separated from each other by the vector group interruption.

[0012] For irradiation vectors of a vector group, a temporal irradiation sequence is defined, in particular, in which the irradiation vectors within the vector group are processed sequentially. At the same time, an initial temporal irradiation sequence of the various vector groups is also defined—at least initially on a trial basis—so that it is also determined which first irradiation vector of a subsequent vector group will be irradiated after the last irradiation vector of a preceding vector group. The temporal irradiation sequence defined in this way simultaneously defines a geometric processing direction in the workspace, along which the irradiation vectors processed sequentially are processed sequentially. The test direction preferably corresponds to this processing direction.Thus, in particular, it is checked whether a geometric distance between two irradiation vectors must be skipped along the test direction and thus at the same time within the temporal irradiation sequence, which is greater than the average distance between immediately adjacent irradiation vectors of a vector group, wherein, if such a geometric distance between two irradiation vectors is determined, these two irradiation vectors are boundary vectors between which a vector group interruption is determined.The initially determined temporal irradiation sequence of the vector groups is then changed by determining the new temporal irradiation sequence according to the invention in such a way that first irradiation vectors of different vector groups arranged on a common side of the vector group interruption are irradiated before second irradiation vectors arranged on a side spaced apart from the common side by the vector group interruption, in particular even if the second irradiation vectors belong at least partially to the same vector group as some of the first irradiation vectors.

[0013] The side spaced apart from the common side is, in particular, a side opposite the common side along the test direction - across the vector group interruption.

[0014] A vector group interruption can be caused, for example, by a hole, a recess in the component - optionally also with an open edge - an angle or a curvature in the cross-sectional geometry of the component, or generally by a concave area of ​​the component geometry in the working powder material layer.

[0015] Additive or generative manufacturing or production of a component is understood to mean, in particular, a layered build-up of a component from powder material, in particular a powder-bed-based method for producing a component in a powder bed, in particular a manufacturing method selected from a group consisting of selective laser sintering, laser metal fusion (LMF), direct metal laser melting (DMLM), laser net shaping manufacturing (LNSM), selective electron beam melting (SEBM), and laser engineered net shaping (LENS). The manufacturing device is accordingly designed, in particular, to carry out at least one of the aforementioned additive or generative manufacturing methods.The at least one energy beam is selected, in particular, from a group consisting of an electromagnetic beam, in particular an optical working beam, in particular a laser beam, and a particle beam, in particular an electron beam. The at least one energy beam can be continuous or pulsed, in particular continuous laser radiation or pulsed laser radiation. In one embodiment, all energy beams are laser beams.

[0016] In particular, within the scope of the planning method, a locally selective irradiation of a work area with a plurality of energy beams can be planned in order to produce, by means of the plurality of energy beams, one component or several components layer by layer from a plurality of powder material layers of a powder material arranged in a layer sequence in the work area.

[0017] An irradiation vector is understood, in particular, to be a continuous, preferably linear displacement of the energy beam over a specific distance with a specific displacement direction. The irradiation vector includes, in particular, the direction or orientation of the displacement, i.e., the vector orientation. The irradiation vector does not have to be a straight line; rather, an irradiation vector can also follow a line or curve that is curved at least in some areas. In particular, an irradiation vector is understood to be a corresponding instruction for controlling a scanner device provided for displacing the energy beam.

[0018] In the context of the present technical teaching, processing of an irradiation vector is understood in particular to mean that a control of the scanner device and / or an actual displacement of the energy beam in the working area is carried out in accordance with the definition given by the irradiation vector.

[0019] The method is preferably carried out for a plurality of working powder material layers of the powder material layers required to produce the component, arranged successively in the working area, particularly preferably for all powder material layers. This means, in particular, that each powder material layer is preferably treated as a working powder material layer within the scope of the method. This can be done successively, one after the other, or at least partially simultaneously—depending on the specific implementation of the planning method on a computing device. Optimizing the irradiation can also provide for cyclical or iterative treatment of the powder material layers as working powder material layers in the method.

[0020] In particular, the irradiation plan is obtained as a data set for controlling a manufacturing device, in particular a manufacturing device according to the invention described below or a manufacturing device according to one or more of the embodiments described below, for additively manufacturing a component from the powder material. Regardless of whether the method is carried out on a planning device arranged separately from a manufacturing device or on the manufacturing device itself, the irradiation plan is thus obtained in an easily manageable, in particular machine-readable form. In particular, it is preferably also possible to export the irradiation plan obtained as a data set and to transport it, in particular to transmit it, independently of a specific device, for example embodied on a data carrier or virtually via a network.

[0021] According to a further development of the invention, the vector groups are defined continuously by the vector group interruption. This means, in particular, that the vector groups are defined in such a way that they always lie clearly on one side of the vector group interruption. The boundary vectors are then assigned to different vector groups in each case. In this way, the temporal irradiation sequence of the vector groups can be determined particularly easily.

[0022] Alternatively, vector groups interrupted by the vector group break are divided into sub-vector groups that are uninterrupted by the vector group break. This means, in particular, that when grouping the irradiation vectors into the vector groups, any vector group breaks are initially disregarded, with a suitable subdivision of the vector groups into the sub-vector groups that are uninterrupted by the vector group break being carried out later. The boundary vectors can then be assigned to the same vector group, but to different sub-vector groups of this same vector group. This advantageously enables a particularly simple definition of the vector groups.

[0023] According to a further development of the invention, the temporal irradiation sequence of the vector groups is determined such that first vector groups arranged on a common side of the vector group interruption are irradiated before second vector groups arranged on a side spaced apart from the common side by the vector group interruption. In particular, this advantageously and very efficiently avoids jumps across the vector group interruption.

[0024] In one embodiment, the vector groups are grouped into irradiation groups irradiated one after the other in time, wherein the vector groups of a same irradiation group are arranged on a common side of the vector group interruption.

[0025] According to a further development of the invention, the temporal irradiation sequence of the vector groups is determined such that first sub-vector groups arranged on a common side of the vector group interruption are irradiated before second sub-vector groups arranged on a side spaced apart from the common side by the vector group interruption. This also advantageously and efficiently avoids jumps across the vector group interruption.

[0026] In one embodiment, the sub-vector groups are grouped into irradiation groups irradiated one after the other in time, wherein the sub-vector groups of a same irradiation group are arranged on a common side of the vector group interruption.

[0027] The determination of the temporal irradiation sequence can therefore be made on the one hand at the - further upper - hierarchical level of the vector groups or on the other hand at the - further lower - hierarchical level of the sub-vector groups.

[0028] According to a further development of the invention, the vector groups are defined as strips. This represents a particularly simple and at the same time suitable definition of the vector groups. The irradiation vectors within a vector group designed as strips are preferably linear vectors that are aligned perpendicular to a strip direction of the respective strip, whereby they can be oriented parallel to one another or alternately antiparallel. Such a strip is longer, in particular along the strip direction, than the vector length of the individual irradiation vectors. The vector length of the individual irradiation vectors is, in particular, simultaneously a width direction of the strip, while the strip direction is a length direction of the strip.

[0029] According to a further development of the invention, the temporal irradiation sequence of the vector groups is determined such that immediately adjacent vector groups are irradiated one after the other. This advantageously avoids longer, unproductive jumps.

[0030] Alternatively, the temporal irradiation sequence of the vector groups is determined such that immediately adjacent sub-vector groups are irradiated one after the other. This also advantageously avoids longer, unproductive jumps.

[0031] In a second aspect, the object is also achieved in particular by creating a method - hereinafter referred to as a manufacturing method - for the additive manufacturing of a component from a powder material, comprising the following steps: providing an irradiation plan, obtained using a planning method according to the invention or a planning method according to one or more of the previously described embodiments, for the locally selective irradiation of a work area with at least one energy beam in order to produce the component layer by layer from a plurality of powder material layers arranged sequentially in a layer sequence in the work area by means of the at least one energy beam, and manufacturing the component according to the irradiation plan. In connection with the manufacturing method, in particular those advantages arise which were already explained above in connection with the planning method.

[0032] In one embodiment, the irradiation plan is provided by performing a planning method according to the invention or a planning method according to one or more of the previously described embodiments. Thus, the manufacturing process simultaneously also includes the planning method—particularly in the form of steps preceding the actual manufacturing.

[0033] A laser beam or an electron beam is preferably used as the energy beam.

[0034] Preferably, the component is manufactured by means of selective laser sintering and / or selective laser melting.

[0035] As powder material, a metallic or ceramic powder can preferably be used.

[0036] In a third aspect, the object is also achieved in particular by creating a computer program comprising machine-readable instructions, on the basis of which a planning method according to the invention or a planning method according to one or more of the previously described embodiments, or a manufacturing method according to the invention or a manufacturing method according to one or more of the previously described embodiments, is carried out when the computer program runs on a computing device, in particular a planning device or a control device of a manufacturing device. In connection with the computer program, in particular those advantages arise that were already explained above in connection with the planning method or the manufacturing method.

[0037] In a fourth aspect, the object is also achieved in particular by creating a machine-readable storage medium comprising a computer program according to the invention or a computer program according to one or more of the previously described embodiments. In connection with the storage medium, the advantages that were previously explained in connection with the planning method, the manufacturing method, or the computer program arise in particular.

[0038] In a fifth aspect, the object is also achieved in particular by providing a planning device for planning a locally selective irradiation of a work area with at least one energy beam in order to produce a component from a powder material arranged in the work area by means of the at least one energy beam. The planning device is configured to carry out a planning method according to the invention or a planning method according to one or more of the previously described embodiments. In connection with the planning device, in particular, those advantages arise that were already explained previously in connection with the planning method, the manufacturing method, the computer program, or the storage medium.

[0039] In particular, the planning device can be configured to plan the locally selective irradiation of the work area with a plurality of energy beams.

[0040] In one embodiment, the planning device is designed as a device selected from a group consisting of a computer, in particular a personal computer (PC), a plug-in card or control card, and an FPGA board.

[0041] In particular, the planning device can be provided externally or separately from a manufacturing device, wherein the planning device preferably creates a data set, which is then transmitted in a suitable manner, for example by means of a data carrier or via a network, in particular via the Internet, or via another suitable wireless or wired transmission form, to a manufacturing device, in particular a control device of a manufacturing device. For example, it is possible for the planning device to generate CAM data from CAD data, i.e., in particular, a command sequence, in particular an NC program, for controlling the manufacturing device. This command sequence is then transmitted to the manufacturing device for its control.It is also possible for CAD data of a component to be transferred to the planning device, with the planning device generating the command sequence for the manufacturing device from this data. However, the planning device can also be integrated into a manufacturing device. In particular, the planning device can be integrated into the control device of the manufacturing device, or the control device of the manufacturing device can be designed as a planning device, in particular by providing a suitable hardware component and / or by implementing a suitable computer program product, in particular software.For example, it is possible for CAD data of a component to be manufactured to be transferred to the manufacturing device, whereby the manufacturing device itself, in particular the planning device implemented in the control device, generates corresponding CAM data or a command sequence for controlling the manufacturing device from the CAD data. However, it is also possible for the planning device to comprise a plurality of computing devices, wherein it is designed in a physically distributed manner, in particular. The planning device then preferably comprises a plurality of interconnected computing devices. In particular, the planning device can be designed as a data cloud or so-called cloud, or the planning device can be part of a data cloud or cloud.In a preferred embodiment, it is also possible for the planning device to comprise, on the one hand, at least one computing device external to the production device and, on the other hand, the production device, in particular the control device of the production device, wherein steps performed by the planning device are then carried out partly on the external computing device and partly on the production device, in particular on the control device. In particular, it is also possible for the planning device not to take over the complete planning of the locally selective irradiation of the work area, but only parts thereof; in particular, it is possible for the planning device to take over only that part of the planning of the locally selective irradiation of the work area that relates to the previously described steps and / or specifications.Other parts of the planning of the locally selective irradiation, however, can be performed in other computing devices, in particular in computing devices external to the manufacturing device, or in the manufacturing device itself, in particular its control device, or even in a data cloud. In particular, it is possible for the planning device to modify, adapt, or correct CAM data generated by another computing device or a command sequence, in particular an NC program.

[0042] The object is also achieved in a sixth aspect in particular by providing a manufacturing device for the additive manufacture of components from a powder material, comprising a beam generating device configured to generate at least one energy beam, a scanner device configured to locally selectively irradiate a work area with the at least one energy beam in order to produce a component from the powder material arranged in the work area by means of the at least one energy beam, and a control device operatively connected to the scanner device and configured to control the scanner device, wherein the control device is configured to carry out a manufacturing method according to the invention or a manufacturing method according to one or more of the previously described embodiments.

[0043] In connection with the manufacturing device, the advantages arise in particular which have already been explained in connection with the planning method, the manufacturing method, the computer program, the storage medium or the planning device.

[0044] In one embodiment, the beam-generating device is configured to generate a plurality of energy beams, and / or the manufacturing device comprises a plurality of beam-generating devices for generating a plurality of energy beams. It is possible for a plurality of scanner devices to be provided for the plurality of energy beams. However, it is also possible for the scanner device to be configured to displace a plurality of energy beams—in particular independently of one another—on the work area. In particular, the scanner device can comprise a plurality of separately controllable scanners, in particular scanner mirrors, for this purpose.

[0045] The scanner device preferably comprises at least one scanner, in particular a galvanometer scanner, piezo scanner, polygon scanner, MEMS scanner, and / or a working head or processing head that can be displaced relative to the work area, for example, a rigid optics system on linear axes. The scanner devices proposed here are particularly suitable for displacing the energy beam within the work area between a plurality of irradiation positions.

[0046] A working head or processing head that can be displaced relative to the work area is understood here in particular to mean an integrated component of the manufacturing device that has at least one radiation outlet for at least one energy beam. The integrated component, i.e., the working head, can be displaced as a whole relative to the work area along at least one displacement direction, preferably along two mutually perpendicular displacement directions. Such a working head can, in particular, be designed as a gantry or be guided by a robot. In particular, the working head can be designed as a robot hand of a robot.

[0047] The control device is preferably selected from a group consisting of a computer, in particular a personal computer (PC), a plug-in card or control card, and an FPGA board. In a preferred embodiment, the control device is an RTC5 or RTC6 control card from SCANLAB GmbH, in particular in the version currently available on the date determining the priority of the present patent.

[0048] The control device may itself be designed as the planning device or may comprise the planning device.

[0049] Preferably, the at least one beam-generating device comprises at least one laser. The at least one energy beam is thus advantageously generated as an intense beam of coherent electromagnetic radiation, in particular coherent light. Irradiation in this respect preferably means exposure.

[0050] The manufacturing device is preferably configured for selective laser sintering. Alternatively or additionally, the manufacturing device is configured for selective laser melting. These configurations of the manufacturing device have proven particularly advantageous.

[0051] The invention is explained in more detail below with reference to the drawings, which show:

[0052] Figure 1 shows a schematic representation of an embodiment of a manufacturing device with a planning device and a schematic representation of a first embodiment of a planning method for planning a locally selective irradiation of a work area with the at least one energy beam, and

[0053] Figure 2 shows a schematic representation of a second embodiment of the planning method. Figure 1 shows a schematic representation of an embodiment of a manufacturing device 1 with a planning device 3 and a schematic representation of a first embodiment of a planning method.

[0054] The manufacturing device 1 is configured for the additive manufacture of a component 5 from a powder material 9 arranged in a work area 7 and comprises a beam generation device 11 configured to generate at least one energy beam 13, as well as a scanner device 15 configured to locally selectively irradiate the work area 7 with the at least one energy beam 13 in order to produce the component 5 from the powder material 9 arranged in the work area 7 by means of the at least one energy beam 13. Furthermore, the manufacturing device 1 comprises a control device 17 operatively connected to the scanner device 15 and configured to control the scanner device. The control device 17 is configured to carry out a manufacturing method explained below.

[0055] The beam generating device 11 preferably comprises at least one laser or is designed as a laser. The at least one energy beam 13 is thus preferably a laser beam. The manufacturing device 1 is preferably configured for selective laser sintering. Alternatively or additionally, the manufacturing device is configured for selective laser melting.

[0056] It is possible for the beam generating device 11 to be configured to generate a plurality of energy beams 13, and / or for the manufacturing device 1 to have a plurality of beam generating devices 11 for generating a plurality of energy beams 13. It is also possible for a plurality of scanner devices 15 to be provided for the plurality of energy beams 13. However, it is also possible for the scanner device 15 to be configured to displace a plurality of energy beams 13—in particular independently of one another—on the work area 7. In particular, the scanner device 15 can have a plurality of separately controllable scanners, in particular scanner mirrors, for this purpose.

[0057] The planning device 3 is configured to plan a locally selective irradiation of the work area 7 with the at least one energy beam 13 in order to produce the component 5 from the powder material 9 arranged in the work area 7 by means of the at least one energy beam 13. In particular, the planning device 3 is configured to carry out a planning method explained in more detail below. In particular, the planning device 3 can be configured to plan the locally selective irradiation of the work area 7 with a plurality of energy beams 13.

[0058] In the embodiment illustrated in Figure 1, the planning device 3 is part of the control device 17 or is integrated into the control device 17. However, the planning device 3 can also be provided separately from or external to the control device 17, in particular as a separate, in particular independent, computing device.

[0059] Within the scope of the planning method, the locally selective irradiation of the working area 7 with the at least one energy beam 13 is generally planned in order to produce the component 5 layer by layer from a plurality of powder material layers 19 of the powder material 9 arranged in a layer sequence in the working area 7, using the at least one energy beam 13. For at least one working powder material layer 21 of the powder material layers 19, a plurality of vector groups 23, each with a plurality of irradiation vectors 25, is defined. A check is carried out to determine whether a cross-sectional geometry 27 of the component 5 in the working powder material layer 21 has a vector group interruption 29. A temporal irradiation sequence of the vector groups 23 is determined such that first irradiation vectors 25 arranged on a first, common side 31 of the vector group interruption 29.1 of different vector groups 23 are irradiated in time before second irradiation vectors 25.2, which are arranged on a second side 33 spaced from the first, common side 31 by the vector group interruption 29.

[0060] Advantageously, long, unproductive jumps of the scanner device 15 or the energy beam 13 can thus be avoided.

[0061] In the embodiment shown here, the vector group interruption 29 is provided by a bore 35 in the component 5.

[0062] The planning method is carried out in particular for a plurality of working powder material layers 21 of the powder material layers 19 required for producing the component and arranged one after the other in the working area 7, particularly preferably for all of these powder material layers 19.

[0063] The vector groups 23 are formed as stripes in Figure 1. Purely for schematic illustration, two first irradiation vectors 25.1 of a first vector group 23.1 are shown on the first side 31 and two second irradiation vectors 25.2 of a second vector group 23.2 are shown on the second side 33.

[0064] The vector group interruption 29 is in particular a structure of the cross-sectional geometry 27 of the component 5 to be produced in the working powder material layer - here the bore 35 which requires a geometric distance between boundary vectors 37 adjacent to the vector group interruption 29 - in particular spaced apart along a test direction. The geometric distance is in particular a finite distance, in particular a distance that is greater than an average distance between immediately adjacent irradiation vectors 25 within a vector group 23 comprising at least one of the boundary vectors 37. The boundary vectors 37 in particular directly border the vector group interruption 29. Shown here are a first boundary vector 37.1 on the first side 31 and a second boundary vector 37.2 on the second side 33, wherein the second boundary vector 37.2 along the test direction—indicated by an arrow PI—which corresponds to a strip direction, i.e., the longitudinal direction, of the assigned vector group 23, at the geometric distance from the first boundary vector 37.1 determined by the vector group interruption 29. The boundary vectors 37 can—as in the second embodiment according to Figure 2—belong to the same vector group 23, in particular to different sub-vector groups 39 of the same vector group 23, or—as in the first embodiment according to Figure 1—belong to different vector groups 23 separated from one another by the vector group interruption 29.

[0065] In the embodiment illustrated in Figure 1, the vector groups 23 are defined continuously by the vector group interruption 29. Each vector group 23 is thus clearly located on exactly one and only one side 31, 33 - either entirely on the first side 31 or entirely on the second side 33 - of the vector group interruption 29. The boundary vectors 37 are then assigned to different vector groups 23 in each case. The temporal irradiation sequence of the vector groups 23 is determined in particular such that, for example, the first vector groups 23.1 arranged on the first side 31 of the vector group interruption 29 are irradiated before the second vector groups 23.2 arranged on the second side 33 - or vice versa.

[0066] Preferably, the temporal irradiation sequence of the vector groups 23 is determined such that immediately adjacent vector groups 23 are irradiated immediately one after the other.

[0067] A possible irradiation sequence of the vector groups 23 resulting from the planning process is shown in Figure 1 by means of lower case letters written into the vector groups 23, whereby the vector groups 23 are processed according to the lower case letters assigned to them in the order of the (German) alphabet - from a to t.

[0068] Fig. 2 shows a schematic representation of a second embodiment of the planning method.

[0069] Identical and functionally identical elements are provided with the same reference numerals in all figures, so that reference is made to the preceding description in each case.

[0070] In the second embodiment, vector groups 23 interrupted by the vector group interruption 29 are divided into sub-vector groups 39 uninterrupted by the vector group interruption 29.

[0071] The temporal irradiation sequence of the vector groups 23 is determined such that, for example, first sub-vector groups 39.1 arranged on the first side 31 are irradiated before second sub-vector groups 39.2 arranged on the second side 33 - or vice versa.

[0072] Preferably, the temporal irradiation sequence of the vector groups 23 is determined such that immediately adjacent sub-vector groups 39 are irradiated immediately one after the other. Here, it is shown that the sub-vector groups 39 are grouped into irradiation groups 41 that are irradiated one after the other, with the sub-vector groups 39 of a same irradiation group 41 each being arranged on a common side 31, 33 of the vector group interruption 29.

[0073] Figure 2 shows a very schematic representation of a first irradiation group 41.1, a second irradiation group 41.2, a third irradiation group 41.3 and a fourth irradiation group 41.4, which are preferably processed, for example, in a sequence in which first the first irradiation group 41.1, then the second irradiation group 41.2, then the third irradiation group 41.3 and then the fourth irradiation group 41.4 is irradiated. In order to additionally avoid jumps across the vector group interruption 29 in a particularly optimal manner, at least one strip not interrupted by the vector group interruption 29 - for example a transition vector group 23.X specifically marked here - can be processed, in particular between the irradiation of the second irradiation group 41.2 and the third irradiation group 41.3, so that the energy beam 13 can be shifted from the first side 31 to the second side 33 without a jump.

[0074] In the first embodiment according to Figure 1, it is also analogously possible for the vector groups 23 to be grouped into irradiation groups irradiated one after the other in time - not shown in Figure 1 - wherein the vector groups 23 of a same irradiation group are arranged on a common side 31, 33 of the vector group interruption 29.

[0075] Within the scope of one embodiment of a manufacturing method for additively manufacturing the component 5 from the powder material 9, an irradiation plan obtained using the planning method or a planning method - in particular according to the first or second embodiment - is provided, and the component 5 is manufactured according to the irradiation plan.

Claims

CLAIMS 1. A method for planning a locally selective irradiation of a work area (7) with at least one energy beam (13) in order to produce a component (5) layer by layer from a plurality of powder material layers (19) of a powder material (9) arranged in a layer sequence in the work area (7) in time succession by means of the at least one energy beam (13), wherein - for at least one working powder material layer (21) of the powder material layers (19), a plurality of vector groups (23) each having a plurality of irradiation vectors (25) is defined, wherein - it is checked whether a cross-sectional geometry of the component (5) in the working powder material layer (21) has a vector group interruption (29), wherein a temporal irradiation sequence of the vector groups (23) is determined such that first irradiation vectors (25.1) of different vector groups (23) arranged on a common side (31, 33) of the vector group interruption (29) are irradiated before second irradiation vectors (25.2) which are arranged on a side (31, 33) spaced from the common side (31, 33) by the vector group interruption (29), wherein in particular an irradiation plan for the locally selective irradiation of the working area (7) with the at least one energy beam (13) is obtained.

2. Method according to claim 1, wherein the vector groups (23) are defined continuously by the vector group interruption (29), or wherein vector groups (23) interrupted by the vector group interruption (29) are divided into sub-vector groups (39) which are continuously interrupted by the vector group interruption (29).

3. Method according to one of the preceding claims, wherein the temporal irradiation sequence of the vector groups (23) is determined such that first vector groups (23.1) arranged on a common side (31, 33) of the vector group interruption (29) are irradiated temporally before second vector groups (23.2) which are arranged on a side (31, 33) spaced from the common side (31, 33) by the vector group interruption (29).

4. The method according to claim 2, wherein the temporal irradiation sequence of the vector groups (23) is determined so that on a common side (31, 33) of the Vector group interruption (29) arranged first sub-vector groups (39.1) are irradiated temporally before second sub-vector groups (39.2) which are arranged on a side (31, 33) spaced from the common side (31, 33) by the vector group interruption (29).

5. Method according to one of the preceding claims, wherein the vector groups (23) are defined as strips.

6. Method according to one of the preceding claims, wherein the temporal irradiation sequence of the vector groups (23) is determined such that immediately adjacent vector groups (23) or immediately adjacent sub-vector groups (39) are irradiated immediately one after the other.

7. A method for the additive manufacturing of a component (5) from a powder material (9), comprising the following steps: providing an irradiation plan obtained using a method according to one of claims 1 to 6 for the locally selective irradiation of a work area (7) with at least one energy beam (13) in order to produce the component (5) layer by layer from a plurality of powder material layers (19) of the powder material (9) arranged sequentially in a layer sequence in the work area (7) by means of the at least one energy beam (13), and manufacturing the component (5) according to the irradiation plan.

8. A computer program comprising instructions on the basis of which a method according to any one of claims 1 to 6 or a method according to claim 7 is carried out when the computer program is run on a computing device.

9. A machine-readable storage medium comprising a computer program according to claim 8.

10. Planning device (3) for planning a locally selective irradiation of a work area (7) with at least one energy beam (13) in order to produce a component (5) from a powder material (9) arranged in the work area (7) by means of the at least one energy beam (13), wherein the planning device is set up to carry out a method according to one of claims 1 to 6.

11. A manufacturing device (1) for the additive manufacture of components (5) from a powder material (9), comprising a beam generation device (11) configured to generate at least one energy beam (13), a scanner device (15) configured to locally selectively irradiate a work area (7) with the at least one energy beam (13) in order to produce a component (5) from the powder material (9) arranged in the work area (7) by means of the at least one energy beam (13), and a control device (17) operatively connected to the scanner device (15) and configured to control the scanner device (15), wherein the control device (17) is configured to carry out a method according to claim 7.

Images