• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a method for laser beam joining of two material parts (1, 2), wherein between the material parts to be joined (1, 2) in the joining region (F), a weld (K) is formed, and wherein in the course of the welding operation in the joint area (F) is irradiated with a laser processing optics (3) of the laser processing beam used for the joining. According to the invention, the surface region (O) or the front or trimming surface (4) of the one material part (2) located in the joining region is therefrom on the surface region (O ') of the other material part (1) located in the joining region in the region of the laser processing optics (3) reflected radiation portion (7) of the laser processing beam used for joining is detected, and that the intensity of the respective reflected radiation components (7) as the transition from one material part (2) to the other material part (1) and so that the position of the weld seam edge is determined and used for positioning and guiding the laser processing beam by means of the laser processing optics (3).
    公开号:AT517184A1
    申请号:T50368/2015
    申请日:2015-05-06
    公开日:2016-11-15
    发明作者:Thomas Dr Grünberger；Friedrich Dr Gröstlinger；Tobias Kaiser；Jan-Philipp Dr Weberpals
    申请人:Plasmo Ind Gmbh；Audi Ag；
    IPC主号:
    专利说明:

    The invention relates to a method for laser beam joining, in particular laser beam welding or laser beam soldering, of two adjoining, in particular superimposed, parts of material, preferably to form overlap or crimping between the two, preferably formed by plates, material parts, wherein between the parts to be joined in the Joining, in particular along the shock or trim edge or the flanged edges, a fillet or flare weld is formed, and wherein in the course of the welding process in the joint area, in particular on the area of the impact or trim edge or the flanged edge of a material part, with a laser processing optics of the used for the joining laser processing beam is irradiated.
    Laser beam welding of aluminum but also steel parts by fillet welds in a lap joint is possible with tactile guided process optics. In this case, the local positioning of the laser beam with respect to the trimmed edge of the component is ensured by the additional wire material fed into the interaction zone of the laser beam and the material in addition to the alloying effect. The desired weld seam profile, which is subject to fitting and trimming tolerances, can be detected by the tactile process control and the laser beam can be adapted to it.
    By supplying the additional wire material in the interaction zone to ensure the tactile process management direct mechanical contact between the component surface and machining head is inevitable. As a result, the interference contour between machining head and component is inevitably increased, which requires a complex and time-consuming bypassing of clamping points and thus increases the process time by developing process by-times. Moreover, by the influences on the wire feed, such as wobble due to the conveying speed, twisting due to the storage and thus resulting incorrect positioning and production-related surface contamination, process instabilities can be caused. If these process-influencing factors can not be completely ensured or eliminated, the tactile-guided joining process can not be represented reliably.
    Camera-based positioning systems according to DE 102011016519 compare Sollauftreffstellen with the actual position and calculate the necessary adjustment of the processing beam. Here, the actual position, e.g. by using reduced laser power and the target position calculated by using appropriate illumination from the camera image. Corresponding extensions with regard to the use of different illuminations, as shown in DE 102009050784, are possible.
    In US 005280171 an edge detection by means of a separate illumination beam and the use of two photodiodes is described. In WO 2013/181598 there is an approach for measuring the reflection of an illumination laser for object finding.
    The aim of the invention is the creation of a method and a device with which the position of the leading weld to be determined quickly, easily and accurately and the laser processing beam can be precisely controlled.
    According to the invention, it is provided in a method of the type mentioned above that the surface region or the front or trimming surface of the one material part located in the joining region or the weld seam approaches the surface region of the other which is in the joining region or the weld seam Material part and / or located near the surface of the other material part or the weld located near the surface of the one material part and in each case from there in the region of the laser processing optics back reflected radiation component of the joining for joining used laser processing beam is detected, and that determines the intensity of the respective reflected radiation components as the transition from one material part to the other material part and thus the position of the weld seam edge and / or leading to fillet weld end and used for positioning and guiding the laser processing beam by means of the laser processing optics.
    According to the invention, depending on the impact geometry, e.g. an overlap or. Bördelstoßes and the weld geometry (for example, the fillet weld), obtained via the continuous evaluation of the laser beam-based process emissions of the intensity corresponding sensor signal for the exact positioning of the laser beam and evaluated.
    In the case of superposed material parts, it is advantageous if the front or the trimming surface of one material part on the surface of the other material part and / or of the surface of the other material part on the front or. Trimming surface of a material part and in each case from there reflected back into the region of the laser processing optics radiation component of the laser processing beam used for joining is detected.
    In the case of adjacent material parts with flanged edges, it is advantageous if the curved outer surface region of the flanged edge of the one material part on the curved outer surface region of the flanged edge of the other material part and / or of the curved outer surface region of the flanged edge of the other material part on the curved outer surface region of the flanged edge a part of the material and in each case from there reflected back into the region of the laser processing optics radiation component of the laser processing beam used for joining is detected.
    Particularly in the case of a fillet weld geometry on a lap joint, the process emission or the capillary-related emission cone corresponding to the reflection law (angle of incidence corresponds to the angle of reflection) is reflected at the respective surfaces as a function of the laser beam position with respect to the front or trimming surface of the upper one material part. While the radiation components which are incident at too great a distance to the trimming edge or to the joining region are reflected into the space, they are again in the immediate vicinity of the trimming edge or fillet weld, ie in the joining region, in the direction of the intended reception or reception. Detection unit or thrown back in the direction of the laser beam source. On the basis of the discrete evaluation of these process emissions, the position of the trim edge can be localized on the basis of the course of the signal intensities and continuously monitored during the process progress or welding process. In the case of a crimping impact, the reflection of the laser light takes place in the region of the outer edge surfaces or on the mutually opposite, rounded edge regions of the respective bending region in a manner comparable to an overlap impact.
    The arrangement of the sensors can be effected coaxially to the laser processing beam or laterally of the laser processing optics. In order to be able to cover a larger work area and also to be able to process non-linear contours, it is also possible to use a plurality of detectors located laterally, in particular with respect to the laser processing optics.
    The use of diode-based sensors allows the construction of processing systems with low interference contour and low weight. In addition, if the process emissions are brought to the evaluation unit by means of optical fibers, no electronics are necessary at the processing head.
    Furthermore, no additional reference markings or additional lighting is necessary.
    In order to pivot the laser processing beam and direct it to the desired location, a scanner device, e.g. one or more vibrating mirrors are used. For the quality of the detection of the reflected laser light, it is advantageous if the front or trimming surface of a material part aligned or formed at an angle of 90 ° ± 10 °, preferably ± 5 °, in particular perpendicular to the surface of the protruding material part and / or if the laser light reflected back from the joining region into the region of or to the starting point of the laser light beam used for the joining is detected there.
    A simple guide for the laser light source is obtained if the intensity profile of the reflected laser radiation component of the laser light source and / or the emitted laser light along a course of the trim edge or flanging edge or the front or. Cutting surface of a material part and / or the course of the joining region intersecting direction, preferably with a cutting angle of 70 to 110 °, in particular 85 to 95 °, is irradiated.
    An exact detection is achieved when the maximum or the two maxima of the intensity of the reflected radiation component in the direction transverse or oblique to the joining region is or are determined, and the position of the throat bottom and / or the trim edge as by the detected maximum or by which the minimum lying between the two maxima is determined.
    A simple process procedure results if laser light is irradiated with a laser light of reduced intensity compared with the laser light used for welding along a direction which intersects the fillet weld seam and / or the front or cut surface or the joining region or flanging edges Minimum of the detected intensity is regarded as the position of the joining region or position of the throat or flanged weld seam or the trim edges or flanged edge to be formed.
    The invention further relates to a device having a laser beam source for laser beam joining, in particular laser beam welding or laser beam soldering, of two abutting, in particular superposed, parts of material, wherein in the region of the transition and / or the Beschnittkante or flanged edges of the material regions in the joining region between the each other mating or flanged weld seam is formed, wherein the laser processing beam via the laser processing optics position and direction controllable and positionally, in particular in all three dimensions, adjustable and / or pivotable in all spatial directions, in particular for implementation of the method according to one of claims 1 to 8. According to the invention, such a device is characterized in that at least one receiving unit for out of the joining region of the material parts to be joined is provided that the receiving unit is connected to the control unit and has an evaluation unit for detecting a maximum and / or a minimum lying between two maxima in the intensity of the reflected, received laser light, and that in dependence on the detected maxima and / or from the minimum, the laser light source is positionable and / or pivotable by the control unit for forming or positioning a weld to be formed.
    A simple and reliable construction of the device provides that the directed to the joining area receiving unit with the laser processing optics motion coupled or fixed mitbewegbar, preferably with this adjustable and / or pivotable, arranged or attached to this and / or that the receiving unit in a the is mounted adjustable and / or pivotable and / or that the receiving area of the receiving unit is aligned for the reflected laser light in the direction in which the laser beam source emits the laser light used for joining.
    The accuracy of the detection can be increased if a further detection unit is provided, which detects along the course of the joining area intersecting direction irradiated and reflected laser light and connected to the evaluation unit, and if the evaluation unit, the laser light source in response to one of adjusted minimum detected as the location of the joining area and / or the trainee Kehl- or flanged weld seam.
    The structure of the device is improved if a control unit is provided for reducing the intensity of the laser light used for joining, which attenuates the laser light of the laser processing optics used for joining to detect the minimum.
    The invention will now be explained in more detail with reference to the drawing, for example.
    Fig. 1 shows schematically in cross-section the formation of a fillet weld with a laser processing beam. Fig. 2 shows a detail section through superimposed, to be joined material parts. Fig. 2a shows a section through a bead to be welded two pieces of material. Fig. 3 shows a schematic plan view of the material parts to be joined. 4 shows the intensity profile of the laser light reflected by the joining region. Fig. 5 shows schematically the scanning of the joining region. Fig. 6 shows schematically a further detection possibility of the joining region. 7 shows the scanning of the joining region with a further detection unit, and FIG. 8 shows the recorded intensity profile of the laser light used for further detection. Fig. 9 shows schematically the structure of a device according to the invention.
    The method according to the invention is primarily used for laser beam joining, such as the laser beam welding or the laser beam soldering of two mutually adjacent, juxtaposed or superimposed material parts 1, 2, wherein the one material part 2 relative to the other material part 1 is recessed to this or laterally next to this. Along the joining or abutting edge or the inner, lower edge 20 of the front surface 4 of the upper material part 2, a fillet weld K is formed in the joining region F. As shown in FIGS. 1 and 2, a fillet weld K is formed, with which the material parts 1 and 2 are connected to each other. For welding or soldering laser light 6 for forming the fillet weld K is irradiated by a laser processing optics 3 in the joining region F between the two material parts 1, 2, in particular in the region of the edge 20 and on the surface region O and the joining region F is in the direction R, in particular in a non-parallel to the edge 20 extending, any direction) scanned or scanned. Optionally, in the corner region in which the fillet weld K is to be formed, additional welding wire is introduced, which is melted to form the fillet weld K or with the front or trimming surface 4 of the one material part 2 and with the surface 4 'of the other material part. 1 is welded.
    The joining region F is here understood as the region or surface region O which is defined by the height or the thickness d of the material part 2 or the front or trimming surface 4 of the material part 2 and on the other material part 1 by the region of the surface 4 '. or the surface area 0 'is predetermined, which extends up to a distance from the fillet weld K, which corresponds to the thickness d of the one material part 2. This joining region F is scanned or scanned by laser light from the laser processing optics 3. In this case, the irradiated laser light 6 is reflected by the surface 4 'of the other material part 1 on the front or trimming surface 4 of a material part 2 and reflected by this front or trimming surface 4 back to the laser processing optics 3. The same applies of course vice versa. Laser light, which strikes the front or trimming surface 4, is reflected by the surface 4 'to the laser processing optics 3. This reflection is comparable to the reflection of a light beam in a retroreflector. This reflection of the irradiated laser light 6 can only take place for laser light which is irradiated into the joining region F, since a double reflection of the irradiated laser light must take place in order to return to the laser processing optics 3 as a radiation component 7 running parallel to the irradiated laser light 6.
    In the formation of a hemming weld 20 ', as shown in Fig. 2a, laser light is e.g. in the direction of the arrow 7 on the edge region 30 or the adjoining this gap surface of a material part 1 and from this or this on the edge portion 30 'and the corresponding surface area of the other material part 2 and from there into the receiving unit 16 as indicated by arrow 6 reflected. The joining region F, which is filled with a weld K, is in this case the triangular gap region between the opposite corner edge regions of the material parts 1, 2. The detection of the laser light is similar to the procedure described in connection with FIG , The surface areas O, 0 'are here represented by the curved outer surfaces of the flanged edges 30, 30'.
    It is now possible to view and evaluate the two respectively reflected radiation components 7 as the position of the joining region F or as a location for the fillet weld K to be guided.
    If the laser beams are pivoted in a direction R or in any direction not parallel to the edge 20, as shown in FIG. 3, then the irradiated laser light 6 moves from the surface 4 'of the other material part 1 over the joining region F to the surface 5 of the one material part 2, wherein the intensity profile shown in Fig. 4 for the two reflected radiation components 7 is obtained. If the detection does not take place with sufficient accuracy or less exacting demands are made on the accuracy, a maximum M is obtained whose center region is the transition region or the corner region 20 of the transition from the surface 4 'of the other material part 1 to the front surface 4 of the one material part 2 corresponds.
    In fact, however, an exact measurement results in a maximum M as soon as the irradiated laser light 6 strikes the surface 4 'of the other material part 1 just before the edge 20 or the position of the fillet weld K to be formed. When an impact occurs in the edge area, a reflection is almost completely prevented or does not take place. If the irradiated laser light 6 strikes the front or trimming surface 4 during further scanning, a maximum reflection on the surface 4 'of the other material part 1 and from this back to the laser processing optics 3 takes place again from this front or trimming surface 4, so between the two maxima Mi and M2 lying minimum Mi the position of the fillet weld K and the edge 20 of the trimming surface 4 can be clearly defined. By continuously scanning and detecting the minimum Mi, the laser processing optics 3 or the laser light used for joining along the edge 20 for forming the fillet weld K in the direction of the arrow 21, as shown in Fig. 5, are moved or moved.
    It is expedient to determine the maximum M or the two maxima M15 M2 of the reflected laser radiation 7 in the direction R extending transversely to the joining region (or in an oblique direction not parallel to the edge), and the position of the bottom of the throat as detected by the latter Maximum M or as determined by the minimum Mi between the two maxima Mi, M2.
    It can also be provided to use only the position of a maximum Mi, M2 for controlling the laser processing optics 3.
    The detection of the reflected laser beam light component 7 thus takes place during a movement or pivoting of the radiation source 3 in any direction R that does not run parallel to the edge, which intersects the fillet weld K or the joining region F to be formed, it being expediently provided that for the detection of the Transition from the one material part to the other material part of the intensity profile of the reflected laser radiation component, the laser light source or the emitted laser light along a course of the front or trimming surface of a material part or the course of the joining region intersecting direction, preferably with a cutting angle of 70 to 110 °, in particular 85 to 95 °, is irradiated. For the detection of the reflected light, it is advantageous if the front surface 4 extends or is aligned at an angle of 90 ° ± 10 °, preferably ± 5 °, in particular perpendicular, to the surface of the protruding material part 1.
    The detection of the radiation component 7 reflected by the joining region F advantageously takes place in the region of the starting point 8 of the laser light beam 6 used for the detection.
    Fig. 1 illustrates the procedure or the structure of the device according to the invention for laser beam welding or laser beam soldering of at least two joining partners or material parts 1, 2 by means of a continuous evaluation of the laser beam-based process emissions for seam guidance. Depending on the laser beam positioning with respect to the front edge or trim edge 4 of the upper joining partner or material part 2, the laser beam-based process emissions or the capillary-related emission cone are reflected.
    The sensor or the receiving unit 16 with its or its evaluation orientation can be arranged coaxially to the process laser radiation or also outside the optical axis of the laser beam - as indicated at 16 '. The process emission is in an immediate environment to the trim edge K or in the joining region F directly in the direction of the receiving unit 16 one of
    Laser processing optics 3 nearby and thus reflected to the evaluation sensors.
    In a preferred embodiment of the invention can, as shown in Fig. 6, 7 and 8, additionally be provided that along a the course of the projected fillet weld K and the edge 20 of the front or Beschnittsfläche 4 intersecting direction R ', In particular, in a non-parallel to the edge, any direction, laser light, in particular with a relation to the laser light used for joining reduced intensity, is irradiated and the minimum Mi of the detected intensity as the location of the joining region F or position of the edge 20 and the trainees Fillet weld K is considered. Thus, the course of the joining region can additionally be checked or detected or monitored beforehand, and a positioning control of the laser processing beam can take place.
    An apparatus for carrying out the invention is shown schematically in FIG. At least one receiving unit 16 is provided for laser light 7 which is reflected from the joining region of the material parts to be joined. The receiving unit 16 is connected to the control unit 15 and has an evaluation unit 14 for determining a maximum M and / or one between two maxima M1; M2 lying minimum Mi in the intensity of the reflected, received laser light 7 on. Depending on the detected maxima M1; M2 and / or the minimum Mi, the laser processing beam is positioned and / or pivoted by the laser processing optics 3 by the control unit 15 for forming or positioning a weld K to be formed.
    In the evaluation of the waveforms shows that a maximum M or in each case a maximum signal M ^ M2 immediately left or right side of the throat bottom or the edge 20 is present, while for the throat bottom or the edge 20 a signal minimum Mi is apparent ,
    Furthermore, a further detection unit 13 can be provided which detects laser light reflected along the path R of the joining region F (or in a direction not arbitrary parallel to the edge) from the joining region F, as in FIGS. 6, 7 and 8 is explained. With an evaluation unit 14, the course of the intensity of the received laser light with respect to its minimum Mi is determined and the position of the minimum Mi as the position of the joining region F or the fillet weld K to be formed is considered accordingly.
    To carry out this additional detection, as shown in FIGS. 6, 7 and 8, it is expedient to provide a control possibility for reducing the intensity of the laser processing beam used for joining, so that laser light from the laser processing optics 3 with attenuated intensity can be detected of the minimum Mi can be used or radiated.
    This characteristic signature of the signal curve as a function of the edge position can be used for various laser beam-based process strategies, in particular for coordinate calculation for welding or Lötnahtpositionierung and to realize the weld / solder seam.
    The process emissions are the lowest with optimal positioning of the laser processing beam in the edge region and therefore control strategies are applied, which hingem to this minimum Mi.
    In particular for finding the starting point of the joining region, preferably the attenuated machining beam can be moved transversely or at an oblique angle to the joining region F, and the maximum M or the corresponding minimum Mi between the two maxima Mi and M2-Mi of the signal course is determined. Subsequently, or during the welding process, the control is carried out to the minimum Mi described above.
    权利要求:
    Claims (14)
    [1]
    claims:
    1. A method for laser beam joining, in particular laser beam welding or laser beam soldering, of two adjoining, in particular superimposed, material parts (1, 2), preferably for forming overlap or crimping between the two, preferably formed by plates, material parts (1, 2) in which a fillet weld seam (K) is formed between the material parts (1, 2) to be joined in the joining region (F), in particular along the impact or trim edge (20) or the flanged edges (30, 30 '), and wherein in the course of the welding operation in the joining region (F), in particular on the region of the abutting or trimming edge (20) or the crimping edge (20 ') of the one material part (2), with a laser processing optics (3) for joining is inserted irradiated laser processing beam, characterized in that - that of the located in the joint area or the weld seam (K) near the surface area (O) or the Fron t- or trimming surface (4) of the one material part (2) on the located in the joining region or the weld (K) near the surface region (O ') of the other material part (1) and / or of the located in the joint area or the surface region (O ') of the other material part (1) near the weld seam (K) on the surface region (O) of the one material part (2) located in the joining region or near the weld seam (K) and respectively from there into the region of Laser processing optics (3) reflected radiation portion (7) of the laser processing beam used for joining is detected, and - that the intensity of the respective reflected radiation components (7) as the transition from one material part (2) to the other material part (1) and thus the position the weld seam edge and / or the fillet weld (K) to be leading determined and for positioning and guiding the laser processing beam by means of the laser processing optics (3) h is attracted.
    [2]
    2. The method according to claim 1, characterized in that of the front or. Trimming surface (4) of one material part (2) on the surface (4 ') of the other material part (1) and / or of the surface (4') of the other material part (1) on the front or trimming surface (4) of the one part of material (2) and in each case from there into the region of the laser processing optics (3) reflected radiation component (7) of the laser processing beam used for joining is detected.
    [3]
    3. The method according to claim 1 or 2, characterized in that of the curved outer surface region of the flanged edge (30) of a material part (2) on the curved outer surface region of the flanged edge (30 ') of the other material part (1) and / or of the curved outer surface region of the flanged edge (30 ') of the other material part (1) on the curved outer surface region of the flanged edge (30) of a material part (2) and each from there in the field of laser processing optics (3) reflected radiation component (7) of Joined laser processing beam is detected.
    [4]
    4. The method according to any one of claims 1 to 3, characterized in that the front or trimming surface (4) of a material part (2) at an angle of 90 ° ± 10 °, preferably ± 5 °, in particular perpendicular to the surface the protruding material part (1) is aligned or formed extending.
    [5]
    5. The method according to any one of claims 1 to 4, characterized in that for detecting the transition from one material part (2) to the other material part (1) of the intensity profile of the reflected laser radiation component (7) of the laser light source (3) and / or the emitted Laser light along a direction of the trimming edge (20) or flanging edge (30) or the front or trimming surface (4) of a material part (2) and / or the course of the joining region (F) intersecting direction (R), preferably with a Cutting angle of 70 to 110 °, in particular 85 to 95 °, is irradiated.
    [6]
    6. The method according to any one of claims 1 to 5, characterized in that the from the joining region (F) in the region of or to the starting point (8) of the laser light beam used for the joining (6) back-irradiated laser light is detected there.
    [7]
    7. The method according to any one of claims 1 to 6, characterized in that the maximum (M) or the two maxima (Mi, M2) of the intensity of the reflected radiation component (7) in the transverse or oblique angle to the joining region extending direction (R ), and the position of the bottom of the throat and / or the trimming edge (20) is considered to be determined by the detected maximum (M) or by the minimum (Mi) lying between the two maxima (M ^ M2) ,
    [8]
    8. The method according to any one of claims 1 to 7, characterized in that along one of the trainees Kehl- or flanged weld (K) and / or the front or trimming surface (4) or the joining region (F) or the flanged edges (30 ', 30') cutting direction (R ') laser light is irradiated with respect to the used for welding laser light of reduced intensity and the minimum (Mi) of the detected intensity as a position of the joining region (F) or position of the throat or flared weld seam ( K) or the trim edges (30, 30 ') or flanged edge (20') is considered.
    [9]
    9. Device having a laser beam source (3) for laser beam joining, in particular laser beam welding or laser beam soldering, of two abutting, in particular superimposed, material parts (1, 2), wherein in the region of the transition and / or the Beschnittkante (20) or flanged edges (30 , 30 ') of the material regions (1, 2) in the joining region (F) between the material parts to be joined together (1, 2) a fillet or flanged weld seam (K) is formed, wherein the device comprises a control unit (15), with the the laser processing beam via the laser processing optics (3) position and direction controllable and positionally, in particular in all three dimensions, adjustable and / or pivotable in all spatial directions, in particular for performing the method according to one of claims 1 to 8, characterized in that - at least a receiving unit (16) for lasing reflected from the joining region (F) of the material parts (1, 2) to be joined erlicht (7) is provided, - that the receiving unit (16) to the control unit (15) is connected and an evaluation unit (14) for detecting a maximum (M) and / or between two maxima (M1; M2) lying in the intensity of the reflected, recorded laser light (7), and - that depending on the detected maxima (M, M1; M2) and / or on the minimum (Mi) the laser light source (3) from the control unit (15) for the formation or positioning of a weld seam (K) to be formed and / or pivoted.
    [10]
    10. The device according to claim 9, characterized in that on the joining region (F) directed receiving unit (16) with the laser processing optics (3) coupled in terms of movement or fixed mitbewegbar, preferably with this adjustable and / or pivotable, arranged or attached thereto ,
    [11]
    11. The device according to claim 9 or 10, characterized in that the receiving unit (16) in a trainees Kehl- or flanged seam (K) or the predetermined joining region (F) intersecting direction (R) is mounted adjustable and / or pivotable ,
    [12]
    12. Device according to one of claims 9 to 11, characterized in that the receiving area of the receiving unit (16) for the reflected laser light (7) is aligned in the direction in which the laser beam source (3) used for joining the laser light (6). radiates.
    [13]
    13. Device according to one of claims 9 to 12, characterized in that - a further detection unit (13) is provided which along a the course of the joining region (F) intersecting direction (R ') on the joining region (F) irradiated and reflected Laser light is detected and connected to the evaluation unit (14), and - that the evaluation unit (14) the laser light source (3) in response to a detected by this further detection unit (13) minimum (Mi) adjusted, the position of the minimum (Mi ) is regarded as corresponding to the position of the joining region (F) and / or the fillet weld seam (K) to be formed.
    [14]
    14. The device according to one of claims 9 to 13, characterized in that a control unit is provided for reducing the intensity of the laser light used for joining, which attenuates the laser light used for the joining laser processing optics (3) for detecting the minimum (Mi).
    类似技术:
    公开号 | 公开日 | 专利标题
    DE10335501B4|2005-01-27|Method and device for welding or cutting with laser beam
    EP2544849B1|2015-02-11|Laser machning head und method of machining a workpiece using a laser beam
    DE102016102492B4|2021-10-07|Method and device for monitoring a joint seam and laser processing head
    DE19716293C2|2000-07-13|Device for regulating the focus position during laser beam welding
    EP1448334B1|2011-04-20|Method and device for detecting the quality of a welding seam during the welding of workpieces
    DE102013017795C5|2018-01-04|Process monitoring method and apparatus
    EP2886239B1|2016-06-29|Method and device for monitoring and controlling the processing path of a laser joining process
    DE102011104550A1|2012-12-20|Optical measuring device for monitoring a joint seam, joining head and laser welding head with the same
    WO2016082823A1|2016-06-02|Method and apparatus for joining workpieces at a lap joint
    DE102007027377B4|2010-08-12|Device and method for processing a workpiece by means of a laser beam
    DD158869A5|1983-02-09|METHOD AND DEVICE FOR FOLLOWING WELDING MEASURES
    DE19511098C1|1996-04-11|Continuous butt joint welding for sheet metal, esp. vehicular body, panels
    DE102013217126B4|2015-09-03|Method for determining deviations of an actual position of a laser processing head from a desired position, laser processing machine and computer program product
    DE102017126867A1|2019-05-16|Laser processing system and method for laser processing
    DE102016001661B3|2017-04-13|Measuring device and method for determining a relative inclination of a workpiece by means of optical coherence tomography during processing
    EP2242623B1|2015-08-26|Method and device for joining
    DE102013008085B4|2017-02-16|Method and device for joining workpieces with a machining beam
    DE102015015330A1|2017-06-01|Apparatus and method for monitoring a machining process performed with an oscillating machining beam using an OCT measuring beam
    DE102016005592B4|2019-10-02|Method for laser beam joining and apparatus with a laser beam source for laser beam joining
    DE202014105648U1|2014-12-23|Device for joining workpieces to a lap joint
    EP0037521B1|1985-07-17|Process and apparatus for automatically tracking a weld seam
    DE102013105960B3|2014-08-21|Method for producing a joint connection and device
    DE102013112244B4|2017-02-16|Method for beam joining
    DE3844727C2|1995-12-07|Laser beam welding
    DE2646838B2|1979-09-13|Device for the automatic control of systems to the middle of welding gaps, welding joints or weld seam canters
    同族专利:
    公开号 | 公开日
    DE102016005592A1|2016-11-10|
    DE102016005592B4|2019-10-02|
    AT517184B1|2017-04-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CN110545947A|2017-04-19|2019-12-06|沃尔沃卡车集团|Laser brazing system having a clamp for contacting a brazing wire and blocking a first portion of a laser beam in association with a detector, method of monitoring a laser brazing system|CH684656A5|1992-05-06|1994-11-15|Baumer Electric Ag|Method and apparatus for detecting and analyzing edges on objects.|
    JP4192573B2|2002-11-28|2008-12-10|スズキ株式会社|Laser welding method and apparatus|
    DE102008061224A1|2008-12-09|2010-06-10|Bayerische Motoren Werke Aktiengesellschaft|Melt joining method and apparatus|
    DE102009050784B4|2009-10-27|2012-02-16|Lessmüller Lasertechnik GmbH|Method for image-based control of machining processes and method for repairing defects on workpieces|
    DE102011016519B4|2011-04-08|2019-03-28|Lessmüller Lasertechnik GmbH|Device for processing a workpiece by means of a high-energy machining beam|
    WO2013181598A1|2012-05-31|2013-12-05|The Regents Of The University Of Michigan|Laser-based edge detection|
    DE102013219220A1|2013-09-25|2015-03-26|Bayerische Motoren Werke Aktiengesellschaft|Method for laser remote processing of a workpiece on a throat and device therefor|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50368/2015A|AT517184B1|2015-05-06|2015-05-06|Method for laser beam joining|ATA50368/2015A| AT517184B1|2015-05-06|2015-05-06|Method for laser beam joining|
    DE102016005592.8A| DE102016005592B4|2015-05-06|2016-05-03|Method for laser beam joining and apparatus with a laser beam source for laser beam joining|
    [返回顶部]