Method for producing a workpiece having a chamfer, and laser cutting device

Abstract

The invention relates to a method for producing a workpiece (10) having a chamfer (20), in which a good part (18) is separated from a scrap skeleton (14) by cutting a blank (16) using at least one laser beam, the good part (18) is cut into a waste part (12) and into the workpiece (10) by means of the laser beam for production of the workpiece (10), whereby the chamfer (20) is formed, wherein, before complete separation from the workpiece (10), the waste part (12) is secured (24) to the workpiece (10) and / or the scrap skeleton (14), in a region that is already separated from the workpiece, by means of at least one welded joint (24).

Description

[0001] METHOD FOR PRODUCE A WORKPIECE WITH A CHAMFER AS WELL AS

[0002] LASER CUTTING DEVICE

[0003] The invention relates to a method for producing a workpiece with a chamfer and a laser cutting device.

[0004] DE 102021 005295 A1 discloses a method for producing at least one workpiece part and a remaining workpiece from a workpiece using a laser beam and a process gas jet exiting a nozzle of a laser processing head together to expel molten material. The method comprises a first stage with a step A in which a section of a cutting gap is cut with the laser beam along a cutting line, or a closed cutting gap is cut, forming a workpiece part-side cutting edge on the workpiece part and a remaining workpiece-side cutting edge on the remaining workpiece. The first stage further comprises a step B in which at least one local recess of the cutting gap in the remaining workpiece is created by the laser beam.As a second stage, the process involves creating a chamfer on the workpiece-side cutting edge on an upper workpiece surface by moving the laser beam along a modification line while the workpiece part is connected to the rest of the workpiece.

[0005] The object of the present invention is to provide a solution by which the risk of collision between a waste part cut from a good part to produce a chamfer and a laser cutting head of a laser cutting device can be kept particularly low.

[0006] The invention achieves its objective by the subject matter of the independent claims. Further possible embodiments of the invention are specified in the dependent claims, the description, and the drawings. Features, advantages, and possible embodiments set forth in the description for one of the subject matter of the independent claims are to be regarded, at least analogously, as features, advantages, and possible embodiments of the respective subject matter of the other independent claims, as well as of any possible combination of the subject matter of the independent claims, optionally in conjunction with one or more of the dependent claims. The invention relates to a method for producing a workpiece with a chamfer. A chamfer on a workpiece is a narrow surface created by chamfering instead of an edge.In particular, the process involves cutting the workpiece from a plate-shaped blank, such as a sheet of metal, using a laser cutting device. The blank is specifically made of a metallic material. The process involves using at least one laser beam to separate a usable portion from a residual portion by cutting the blank. This means that the blank is divided into the usable portion and the residual portion by cutting with the at least one laser beam. Furthermore, the process involves using the at least one laser beam to cut off a waste portion from the usable portion, thereby forming the chamfer. In other words, the laser beam separates the usable portion into the waste portion and the workpiece with the chamfer.

[0007] Before the waste portion is completely separated from the workpiece, it is attached to the workpiece and / or the remaining grid in an area already separated from the workpiece by means of at least one weld. This at least one weld thus holds the waste portion, at least substantially, in its position relative to the workpiece and / or the remaining grid, at least until the workpiece is completely cut out of the good part. In other words, the waste portion is cut from the workpiece in sections by means of the laser beam, and then the at least one weld is made such that the waste portion is attached to the remaining grid or the waste portion is held in place at its cut surface created during the cutting of the good part by means of the at least one weld, forming a material bond to the cut surface created during the cutting of the good part on the workpiece.Particularly when the waste part has a particularly large longitudinal extent in the cutting direction, it is advantageous to fix the waste part relative to the workpiece or relative to the remaining grid by means of at least one welded joint in order to limit or suppress bending or standing up of the waste part, thereby minimizing the risk of collision between the waste part and a component of the laser cutting device, especially a laser cutting head. The cutting direction is the direction in which the laser beam is moved across a surface of the workpiece to separate the good part into the waste part and the workpiece.In a possible embodiment of the invention, a first section of the chamfer is produced by means of the laser beam in a cutting direction by separating the waste part from the workpiece. Subsequently, in a region of the first section of the chamfer that is central with respect to the cutting direction, the waste part is attached to the workpiece and / or to the remaining grid by means of at least one weld connection using the laser beam. Following this, a second section of the chamfer, adjoining the first section of the chamfer in the cutting direction, is produced by separating the waste part from the workpiece in the cutting direction. Thus, the laser beam is moved in the cutting direction relative to the workpiece to cut the first section of the chamfer. The laser cutting head can then be moved back against the cutting direction to the central region of the first section of the chamfer.In this central area of ​​the first chamfer section, the laser beam creates at least one weld connection between the waste material and the workpiece and / or the remaining grid. The laser beam is then used to cut the second chamfer section, which adjoins the first section in the cutting direction.

[0008] When adjusting the laser cutting head of the laser cutting device from aligning the laser beam at the end of the first chamfer section to aligning it at the center of the first chamfer section, the laser beam may be switched off and therefore unavailable. Similarly, when moving the laser cutting head forward from its position at the center to its position at the end of the first chamfer section, so that the second chamfer section can be cut with the laser beam, the laser beam may be switched off and therefore unavailable during this adjustment.In the described embodiment of the invention, the chamfer is produced sequentially by sequentially separating the waste portion from the workpiece, with the respective areas of the waste portion generated by the sequential cutting of the chamfer in the respective sections being fixed to the workpiece and / or to the remaining grid by means of at least one weld. This ensures that even with particularly long waste portions in the cutting direction, there is minimal deflection, thus minimizing the risk of collision between the waste portion and the laser cutting head.

[0009] In a further possible embodiment of the invention, the waste part is attached to the workpiece and / or the residual grid by means of at least one weld point. Connecting the waste part to the workpiece and / or the residual grid via the at least one weld point allows for particularly simple and quick welding of the respective connection between the waste part and the workpiece and / or the residual grid, ensures that the waste part is held particularly securely on the workpiece or the residual grid, and thus significantly reduces the risk of the waste part bending. Furthermore, it is possible to easily separate the connection between the waste part and the residual grid or the workpiece if the workpiece is completely provided with the at least one chamfer intended for the workpiece.

[0010] In a further possible embodiment of the invention, the laser beam is aligned in a direction perpendicular to a surface of the scrap part upon which the laser beam strikes during the welding process, thus creating the at least one weld joint. In other words, the laser beam is aligned perpendicular to the surface of the workpiece toward which it was directed when the scrap part was cut. By aligning the laser beam perpendicularly to the surface of the scrap part that borders the scrap part in relation to the laser cutting head, the scrap part is attached to the workpiece by means of the weld joint.Starting from the alignment of the laser beam, as it was aligned for cutting the waste part from the workpiece, into the vertical alignment, the laser beam can be adjusted particularly easily and quickly, which makes it particularly easy and quick to create the weld connection using the laser beam.

[0011] In an alternative embodiment of the invention, the laser beam is directed in a direction oblique to a surface of the waste part upon which the laser beam strikes during the welding process, for the purpose of creating at least one weld joint between the waste part and the workpiece. In this case, the laser beam is inclined about the cutting direction in the opposite direction to the direction in which the laser beam was inclined about the cutting direction when cutting the waste part from the workpiece.When the laser beam is angled compared to being angled perpendicular to the surface of the waste material, a particularly short distance between the cut surface of the waste material (created when the waste material is cut from the workpiece) and the cut surface of the workpiece must be bridged by means of molten material in order to bond the waste material to the workpiece by means of at least one weld. In a further alternative embodiment of the invention, the laser beam is aligned in a direction that is oblique to a surface of the residual lattice upon which the laser beam strikes during the welding process, in order to create the at least one weld between the waste material and the residual lattice.This means that, for welding the scrap piece to the remaining grid, the laser beam strikes the remaining grid at an angle to the cutting direction. The laser beam striking the surface of the remaining grid is inclined in the opposite direction to the direction in which the laser beam is inclined when the scrap piece is cut from the workpiece. This angled alignment of the laser beam onto the remaining grid allows for a particularly simple and reliable weld between the scrap piece and the remaining grid.

[0012] It may be provided that the waste part is attached to the workpiece and / or to the residual grid by means of several different weld connections, wherein the laser beam for producing the different weld connections may have different orientations to each other and / or may be directed towards different surfaces, in particular the surface of the waste part and / or the surface of the residual grid.

[0013] In a further possible embodiment of the invention, the laser beam, which is directed obliquely to the surface of the waste part for producing the at least one weld joint, is directed perpendicularly to a cut surface created on the workpiece or on the waste part when the waste part is cut from the workpiece. This ensures that the molten material generated during the welding process only has to bridge a particularly short distance between the cut surface of the waste part (created when the waste part is cut from the workpiece) and the cut surface of the workpiece. Therefore, only a very small amount of material from the waste part needs to be melted to produce the weld joint.

[0014] In a further possible embodiment of the invention, the waste part is attached to the workpiece and / or the remaining grid by means of several welds, with a distance of no more than 200 millimeters, preferably no more than 100 millimeters, and in particular no more than 70 millimeters, between welds adjacent to each other in the cutting direction. For example, a distance of approximately 50 millimeters can be selected between welds adjacent to each other in the cutting direction between the waste part and the workpiece and / or the remaining grid. This effectively prevents the waste part from bending and consequently from colliding with a component of the laser cutting device, in particular the laser cutting head of the laser cutting device.

[0015] In a further possible embodiment of the invention, the respective weld joint has a length of one to seven millimeters extending in the cutting direction, in particular a length of three to five millimeters. This ensures that, firstly, the waste part can be held particularly securely to the remaining grid or the workpiece by means of the respective weld joint, and secondly, that the weld joint has particularly small dimensions and can therefore be produced particularly quickly and can be released particularly quickly for the purpose of separating the waste part from the workpiece or the remaining grid.

[0016] The invention further relates to a laser cutting device configured to perform a method according to one of the preceding claims. This means that the laser cutting device is configured to produce a workpiece with a chamfer. For this purpose, the laser cutting device is configured to separate a usable part from a residual grid by cutting a blank using at least one laser beam. The laser cutting device is configured to provide and align the at least one laser beam onto the blank, which is to be cut into the usable part and the residual grid. The laser cutting device is further configured to cut off a waste part from the usable part using the at least one laser beam for producing the workpiece, thereby forming the chamfer.Furthermore, the laser cutting device is designed to attach the waste part to the workpiece and / or to the remaining grid by means of at least one weld connection before it is completely separated from the workpiece in an area already separated from the workpiece.

[0017] Further features of the invention may become apparent from the following description of the figures and from the drawings. The features and combinations of features mentioned above in the description, as well as the features and combinations of features shown below in the description of the figures and / or in the figures themselves, can be used not only in the combinations specified, but also in other combinations or individually, without departing from the scope of the invention.

[0018] The drawing shows in:

[0019] Fig. 1 shows a schematic sectional view of a blank, which is divided into a workpiece, a waste part and a residual grid;

[0020] Fig. 2 shows a schematic sectional view of the subdivided blank, in which the waste part is welded to the workpiece by means of a laser beam directed perpendicularly to the waste part;

[0021] Fig. 3 shows a schematic sectional view of the subdivided blank, wherein the waste part is attached to the workpiece by means of a welding connection using a laser beam directed obliquely towards the waste part;

[0022] Fig. 4 shows a schematic sectional view of the subdivided blank, wherein the waste part is welded to the residual grid by means of a laser beam directed perpendicular to the waste part; and

[0023] Fig. 5 shows a schematic sectional view of the subdivided blank, wherein the waste part is welded to the residual grid by means of a laser beam directed obliquely onto the residual grid.

[0024] Identical or functionally equivalent elements are marked with the same reference symbols in the figures.

[0025] Figures 1 to 5 show schematic sectional views of a blank 16, each divided into a workpiece 10, a waste part 12, and a residual grid 14. The blank 16 is first divided into a good part 18 and the residual grid 14 by means of a laser beam. The good part 18 is then further divided into the workpiece 10 and the waste part 12 by means of at least one laser beam. By cutting off the waste part 12 from the workpiece 10, the workpiece 10 is produced with a chamfer 20. The described method is carried out, in particular, using a laser cutting device. To separate the blank 16 into the good part 18 and the residual grid 14, at least one laser beam is directed onto a surface 22 of the blank 16 facing the laser beam. In particular, the laser beam is directed perpendicularly to the surface 22.This results in a cut through the blank 16 that is at least substantially perpendicular to the surface 22. The blank 16 is cut along its entire thickness, which runs in the thickness direction D, by means of the laser beam. To cut the good part 18 from the remaining grid 14, the laser beam is moved across the surface 22 in a cutting direction that extends into the plane of the image in the respective Figures 1 to 5. In particular, the cutting direction is perpendicular to the thickness direction D. The blank 16 is, in particular, a sheet made of a metallic material, which can also be referred to as a plate.

[0026] To divide the good part 18 into the workpiece 10 and the waste part 12, the laser beam is directed obliquely onto the surface 22 of the good part 18 facing the laser beam and moved in the cutting direction, thereby separating the waste part 12 from the workpiece 10 and producing the workpiece 10 with the chamfer 20. In this case, the waste part 12 has a triangular cross-section perpendicular to the cutting direction.

[0027] When producing the workpiece 10 with the chamfer 20 using the laser beam, particularly for preparing a Y-seam, a K-seam, or an X-seam, the waste part 12 with the triangular cross-section is generated. This waste part 12 can be deformed and stretched by intense heating during its separation from the workpiece 10. This stretching and deformation can cause the waste part 12 to protrude into the cutting area of ​​other contours being cut into the blank 16. This can lead to collisions between the laser cutting head, particularly a cutting nozzle of the laser cutting head, and the waste part 12. As a result, the laser cutting head, especially the cutting nozzle, can be damaged.To prevent damage to the laser cutting head, particularly the cutting nozzle, the method for manufacturing the workpiece 10 provides that, before the waste part 12 is completely separated from the workpiece 10, it is attached to the workpiece 10 and / or the remaining grid 14 by means of at least one weld 24 in an area already separated from the workpiece 10. It is possible that the waste part 12 is attached to the workpiece 10 by at least one weld 24 and to the remaining grid 14 by at least one further weld 24.

[0028] Figures 2 to 5 show different possible weld joints 24 for connecting the waste part 12 to the workpiece 10 or the residual grid 14 in respective schematic sectional views of the subdivided blank 16. In the embodiments shown in Figures 2 and 3, the waste part 12 is attached to the workpiece 10 by means of the respective weld joint 24. In the embodiments shown in Figures 4 and 5, the waste part 12 is attached to the residual grid 14 by means of the respective weld joint 24. The weld joints 24 shown in Figures 2 and 4 are produced by aligning the laser beam perpendicularly to the surface 22, wherein the laser beam for producing the weld joint 24 in Figure 2 is aligned to the surface of the waste part 12 facing the laser beam, and the weld joints shown in Figures 4 and 5 are produced by aligning the laser beam perpendicularly to the surface 22.The weld joint 24 shown in Figure 4 is produced by aligning the laser beam onto the surfaces of the scrap part 12 and the residual grid 14 facing the laser beam. For producing the weld joints 24 shown in Figures 3 and 5, the laser beam was directed obliquely onto the surface 22 of the subdivided blank 16. Specifically, for producing the weld joint 24 shown in Figure 3, the laser beam was directed obliquely onto the surface of the scrap part 12 facing the laser beam, and for producing the weld joint 24 shown in Figure 5, the laser beam was directed obliquely onto the surface of the residual grid 14 facing the laser beam. With each oblique alignment of the laser beam onto the surface facing the laser beam for producing the weld joints shown in Figures 3 and 5, the laser beam was directed obliquely onto the surface of the residual grid 14 facing the laser beam.In the weld joints 24 shown in Figures 3 and 5, the laser beam is pivoted in a first direction about the cutting direction, starting from a perpendicular orientation of the laser beam. For cutting off the waste part 12 from the workpiece 10 and thus producing the workpiece 10 with the chamfer 20, the laser beam is directed obliquely onto the surface of the good part 18 facing the laser beam, wherein the laser beam is pivoted from its perpendicular orientation onto the surface facing the laser beam about the cutting direction in a second cutting direction opposite to the first direction. In particular, for producing the weld joint 24 shown in Figure 3, the laser beam is directed perpendicular to a cut surface of the waste part 12 or of the workpiece 10 that was created when the waste part 12 was separated from the workpiece 10.

[0029] In particular, it is provided that the waste part 12 is attached to the workpiece 10 and / or to the residual grid 14 by means of several welds 24. The respective welds 24 can, in particular, be designed as individual weld points. It is specifically provided that each weld 24 has a length of one to seven millimeters in the cutting direction, and in particular a length of three to five millimeters. When attaching the waste part 12 to the workpiece 10 and / or to the residual grid 14 by means of several welds 24, it can, in particular, be provided that the distance between each weld 24 that is directly adjacent to the other in the cutting direction is at most 200 millimeters, preferably at most 100 millimeters, and in particular at most 70 millimeters.

[0030] In order to particularly well limit deformation of the waste part 12 when separating it from the workpiece 10, it is provided that a first section of the chamfer 20 extending in the cutting direction is produced by separating the waste part 12 from the workpiece 10 using the laser beam in the cutting direction, then the waste part 12 is attached to the workpiece 10 and / or to the residual grid 14 by means of at least one weld connection 24 in a region of the first section of the chamfer 20 that is central with respect to the cutting direction, and then a second section of the chamfer 20 adjoining the first section of the chamfer 20 is produced by further cutting the waste part 12 from the workpiece 10 in the cutting direction.

[0031] The problem of deformation of the waste part 12 can thus be addressed by spot welding, also known as bevel welding, of the triangular cross-section waste part 12 to the chamfer 20 of the workpiece 10 or to the residual grid 14. This secures the waste part 12 to the workpiece 10, particularly to the chamfer 20, by means of at least one weld 24, preventing it from deforming and stretching into other cutting areas of the blank 16.

[0032] The cutting process described in connection with Fig. 1 for producing the workpiece 10 with the chamfer 20 for a Y-weld preparation proceeds as follows: First, a vertical cut is made, separating the good part 18 from the remaining grid 14. This is followed by the chamfer cut, which creates the waste part 12. This waste part 12 can deform and enter other areas of the blank 16 to be cut. To prevent this, a second cut is made after the first cut, in which the good part 18 is separated from the remaining grid 14. In the second cut, the chamfer cut is made to a length of 100 millimeters in the cutting direction.The laser cutting head is then repositioned 50 millimeters against the cutting direction, thereby creating a deep weld seam with the laser beam in a central area of ​​the section of the waste part 12, which is already completely separated from the workpiece 10. This weld seam attaches the waste part 12 to the chamfer 20 of the workpiece 10 or to the remaining grid 14. Specifically, this welding of the waste part 12 to the workpiece 10 or the remaining grid 14 is performed with a setting of -10 millimeters, a focus diameter of 210 micrometers, a laser power of five kilowatts, a feed rate of two meters per minute, a distance of 20 millimeters between the nozzle and the surface 22 of the segmented blank 16 facing the laser beam, and a cutting gas pressure of 0.3 bar. The weld seam 24 produced in this process has a length of three to five millimeters in the cutting direction.After this weld 24 is created, the laser cutting head resumes the bevel cut and the bevel 20 is cut for a further 50 millimeters in the cutting direction. The laser cutting head is then repositioned 50 millimeters back against the cutting direction, and another weld 24 is made between the waste part 12 and the workpiece 10 or the remaining grid 14. In this case, it is intended that a weld 24 is created every 50 millimeters along the cutting direction, in particular by setting a weld point. The described process of alternately performing the bevel cut to cut the bevel 20 section by section and setting the respective weld 24 is carried out until the desired bevel length of the bevel 20 in the cutting direction has been achieved.To create the respective weld joint 24, the laser beam provided by the laser cutting head can strike the surface of the waste part 12 facing the laser beam perpendicularly or obliquely on the surface of the waste part 12 or the residual grid 14 facing the laser beam for the purpose of creating the weld joint 24.

[0033] The following describes an example in which a blank 16, six millimeters thick in the thickness direction D and made of structural steel sheet, is cut using oxygen as the cutting gas at a laser power of twelve kilowatts. The chamfer 20 to be produced has an angle of 45 degrees, a chamfer depth of three millimeters, a chamfer shape Y, and a chamfer length of 300 millimeters in the cutting direction. In the first step, the perpendicular cut to divide the good part 18 from the remaining grid 14 is made, thereby producing a perpendicular portion of the Y-chamfer. The perpendicular cut is performed at a feed rate of three meters per minute. In the second step, the laser cutting head is pivoted 45 degrees around the cutting direction from a perpendicular orientation, and the chamfer cut is performed up to a length of 100 millimeters in the cutting direction.Next, the laser cutting head is repositioned 50 millimeters in the opposite direction to the cutting direction, without the laser beam being active during this repositioning. In a width direction B, which is perpendicular to both the cutting direction and the thickness direction D, the laser beam is aligned at least substantially centrally on the surface of the scrap piece 12 facing the laser beam, thereby creating a deep weld. This deep weld welds the scrap piece 12 to the chamfer 20 of the workpiece 10. During this process, the laser beam is specifically aligned perpendicular to the surface of the scrap piece 12 facing the laser beam. After welding, the laser cutting head resumes the chamfer cut and cuts the chamfer 20 for another 50 millimeters in the cutting direction.The laser cutting head is then repositioned 50 millimeters back against the cutting direction, and the next weld 24 is made. It is intended that a weld 24 is made every 50 millimeters in the cutting direction. This means that, in the cutting direction, the distance between the respective centers of immediately adjacent weld 24 is at least substantially 50 millimeters. The described process is carried out until the desired chamfer length of 300 millimeters is reached. By welding the waste part 12 to the remaining grid 14 using the respective weld 24, damage to the chamfer surface of the workpiece 10 by the weld 24 is prevented.

[0034] When welding the waste part 12 to the workpiece 10, the laser beam requires very little reorientation compared to bevel cutting, which makes it particularly easy and quick to produce the respective weld joint 24.

[0035] Overall, the invention demonstrates how a so-called bevel weld can be implemented.

[0036] REFERENCE MARK LIST

[0037] 10 workpieces

[0038] 12 Waste section 14 Residual grid

[0039] 16 blanks

[0040] 18 Good part

[0041] 20 phase

[0042] 22 Surface 24 Weld joint

[0043] D Thickness direction

[0044] B Latitude direction

Claims

PATENT CLAIMS 1. Method for producing a workpiece (10) with a chamfer (20), in which a good part (18) is separated from a residual grid (14) by means of at least one laser beam by cutting a blank (16), the good part (18) is cut into a waste part (12) and into the workpiece (10) by means of the laser beam for producing the workpiece (10), thereby forming the chamfer (20), wherein the waste part (12) is attached to the workpiece (10) and / or to the residual grid (14) by means of at least one weld connection (24) in an area already separated from the workpiece (10) before being completely separated from the workpiece (10).

2. Method according to claim 1, characterized in that a first section of the chamfer (20) is produced by means of the laser beam in a cutting direction by separating the waste part (12) from the workpiece (10), subsequently the waste part (12) is attached to the workpiece (10) and / or to the residual grid (14) by means of at least one weld connection in a region of the first section of the chamfer (20) that is central with respect to the cutting direction, and afterwards a second section of the chamfer (20) adjoining the first section of the chamfer (20) in the cutting direction is produced by separating the waste part (12) from the workpiece (10).

3. Method according to claim 1 or 2, characterized in that the waste part (12) is attached to the workpiece (10) and / or to the residual grid (14) by means of at least one weld point.

4. Method according to one of the preceding claims, characterized in that the laser beam is directed in a direction perpendicular to a surface of the waste part (12) on which the laser beam strikes when producing the weld joint (24) for the production of the at least one weld joint (24).

5. Method according to one of claims 1 to 3, characterized in that the laser beam for producing the at least one weld joint (24) of the waste part (12) with the workpiece (10) is directed in a direction oblique to a surface of the waste part (12) on which the laser beam hits when producing the weld joint (24).

6. Method according to one of claims 1 to 3, characterized in that the laser beam for producing the at least one weld joint (24) of the waste part (12) with the residual grid (14) is aligned in a direction oblique to a surface of the residual grid (14) on which the laser beam strikes when producing the weld joint (24).

7. Method according to claim 5 or 6, characterized in that the laser beam is aligned perpendicular to a cutting surface formed on the workpiece (10) or on the waste part (12) when the waste part (12) is cut off from the workpiece (10).

8. Method according to one of the preceding claims, characterized in that the waste part (12) is attached to the workpiece (10) and / or to the residual grid (14) by means of several weld connections (24), wherein there is a distance of at most 200 millimeters, preferably at most 100 millimeters, in particular a distance of at most 70 millimeters between weld connections (24) adjacent to each other in the cutting direction.

9. Method according to one of the preceding claims, characterized in that the respective weld joint (24) has a length of 1 to 7 millimeters extending in the cutting direction, in particular a length of 3 to 5 millimeters.

10. Laser cutting device which is configured to perform a method according to one of the preceding claims.

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