• 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 joint connection between a first metallic component (1) and a second metallic component (2), which form a joint (4) and are connected to each other via a welded seam (3) produced by a welding beam (8) the point of incidence (11) of the welding beam (8) on the components (1, 2) defined weld seam track (13) in a first weld section (15) along the joint (4) and the weld seam (3) has a constant weld seam width (14) and in a second weld section (16) a weld end (17) is formed. In this, the weld seam web (13) alternately transversely to the joint (4) has a deflection (19) in the first component (1) and a deflection (20) in the second component (2), wherein two or more crossing points (21, 22, 31, 32, ...) of the weld seam track (13) are formed with the joint (4) and successive crossing points (21, 22, 31, 32) to each other at a distance (24), the maximum of the weld seam width (14) equivalent.
    公开号:AT514970A1
    申请号:T50677/2013
    申请日:2013-10-21
    公开日:2015-05-15
    发明作者:
    申请人:Automed Holding Gmbh；
    IPC主号:
    专利说明:

    The invention relates to a joint connection according to the preamble of claim 1.
    In such a joint connection between a first metallic component and a second metallic component of an assembly, these form a joint on their facing and substantially gap-free abutting Füge¬flächen. The components are connected to one another in a material-locking manner by means of a weld seam produced by a welding beam, in particular a laser beam or electron beam. The locations of incidence of the center of the welding beam on the components define a weld line that extends substantially along the joint in a first weld section and has an approximately constant weld line width. The end of the weld is formed in a subsequent second weld section.
    In such beam welding methods, in which the welding beam, in particular formed by a laser beam or an electron beam, arises at the meeting point of the welding beam, a so-called keyhole, which is filled with evaporating metal and surrounded by molten metal. Such a keyhole allows deep penetration of the welding beam and is such a characteristic feature of so-called deep welding methods. If the power of the welding beam is now reduced or completely deactivated at one end of the weld, very rapid solidification processes occur due to the lack of energy input and rapid heat dissipation into the interior of the components, and these are often so fast that forces, notches, or cracks occur at the weld seam end Cracks remain.
    A joining connection produced by a generic method is known, for example, from DE 20 2012 102 318 U1. In doing so, a weld end is formed like a hook or loop to avoid end crater tears. The appropriate choice of the dimensions of the weld end and the exact determination of the shape of the weld end depend on many Ein¬flussgrößen and can be correspondingly expensive.
    The object of the invention is to provide a joint connection which is easy to produce and has favorable properties with regard to the prevention of end craters and end crater cracks.
    The object of the invention is achieved by a generic joint connection in which, in the second weld seam section, the weld seam path in the manner of a transverse vibration directed alternately alternately has a deflection into the first component and a deflection into the second component a plurality of crossing points of the weld seam web are formed with the joining joint and successive crossing points have a distance from one another which corresponds at most to the weld seam width in the first weld seam section. As a result of these spatially close successive deflections of the welding beam, an amount of heat expanded over a relatively large area is effectively introduced at the weld end, which effectively prevents the formation of a terminal crater which would occur in the case of a pure power reduction or increase in the speed of the welding beam, since the region in which the The keyhole formed by the welding beam is collapsed to a certain extent pretreated by the heat input when the beam power is reduced. The inventive design of the weld seam track is technically easy to implement, since e.g. a main movement of a welding head in a welding direction, which is carried out by means of a CNC axis is superimposed on a vibrating transverse movement of the welding beam, which in a simple manner by means of a deflection optics. with a swinging mirror.
    A possible embodiment of the joint connection may consist in that the weld seam end formed from solidified melt bath has in plan view a corrugated edge with wave crests and troughs, with corrugations corresponding to the local maximum deflections of the weld seam path into the respective component. This outer shape of the weld favors transverse surface structures aligned with the joint and avoids end craters with parallel notches parallel to the joint.
    A frequently applicable and advantageous embodiment of the joint connection in practice is that it is formed as a butt weld and in the second weld seam section a maximum deflection of the weld seam path measured transversely to the joint essentially into the maximum deflection of the weld joint Welding web in the second component matches.
    A likewise frequently applicable in practice embodiment is formed in that the joint connection is formed as a fillet weld, wherein the joining is formed by the fact that an edge of the second component rests on the surface of the first component and the welding beam at an acute angle to Oberflä¬che of the first component is guided to the joining, and that in the second Schwei߬nahtabschnitt the maximum deflection of the weld seam in the second Bau¬teil at least twice, preferably three times, in particular four times the maximum deflection of the weld seam in the first component corresponds.
    An advantageous energy distribution with effective prevention of end craters in the weld end is achieved when the sum of the maximum deflection of the weld seam in the first component and the maximum deflection of Schwei߬nahtbahn in the second component between 0.8 times and 2 times the weld seam width, preferably between 1.2 times and 1.5 times the weld width. It is also advantageous for the heat input into the weld end when successive crossing points of the weld seam with the joint face each other at a distance of between 0.2 times and 0.8 times, preferably between 0.4 times and 0.6 times the weld width in the first weld section.
    In order to achieve a short weld end, which can accordingly also be produced in a short time, it is advantageous if the weld seam track successively a first deflection in the first component, a second deflection in the second component and a third deflection in the first component auf¬weist and then in a welding end point in which the welding beam is deactivated, ends.
    An even more reliable avoidance of end craters and similar Schweißfeh¬lern at the weld end is achieved when the weld seam successively a first deflection in the first component, a second deflection in the second component, a third deflection in the first component and a fourth deflection in the second Having component and then ends in a Schweißend¬punkt in which the welding beam is deactivated.
    If a welding end point of the weld seam path in which the welding beam is switched off is placed on the joint, any weld defects at the weld seam end are located at a defined point and can be more easily identified or countermeasures taken.
    An alternative embodiment of the joint connection, which also has a spatially very short weld end, but without an increased risk of end craters, consists in that the welding end point, in which the welding beam is deactivated or falls below a certain lower power limit, by reversing the welding direction before the outermost weld ¬tendpunkt lies.
    The invention further relates to a method for producing a joint connection according to the preamble of claim 11.
    According to the invention, in the second weld seam section, the weld seam path in the direction of welding is alternately guided in a deflection into the first component and in a deflection into the second component in the manner of a transverse joint, wherein the weld seam track is guided such that it has two or more points of intersection with the joint and successive crossing points to each other have a distance which corresponds at most to the weld seam width. The region of the weld seam in which the keyhole collapses when the welding beam is deactivated is pretreated by the measures according to the invention in such a way that no sharp-edged surface topographies result, which usually occur in the known end craters.
    The advantageous effects of the invention can be achieved, in particular, if the weld seam path in the second weld section has deflections relative to the joint in a shape selected from a group comprising sinusoidal, zigzag, sawtooth, rectangular, trapezoidal, wavy. These forms can be easily programmed in a modern CNC control of a welding device and easily realized by appropriate CNC axes.
    A weld end with little risk of forming a end crater is generated when a power of the welding beam from a substantially constant output power in the first weld section in the second weld section until reaching a welding end point, in which the welding beam is deactivated, to less than 20% of the output power is reduced.
    In order to maintain a consistently high quality of the weld seam in the weld seam as well, it is advantageous to modulate the power in the second weld seam section with decreasing amplitude.
    A machine variant of the method in which the movements of the welding beam relative to the assembly in the first weld section by a welding head moving CNC axes are performed and in the second weld section at least the deflections of the welding beam transverse to the joint by means of a in or at the welding head and by the CNC Axes independently adjustable optical deflection system durchge performed. For the transverse deflections of the welding beam, in this case no highly dynamic CNC axes are required, but a deflection optics with which such rapid movements of the welding beam can be carried out reliably.
    For a better understanding of the invention, this will be explained in more detail with reference to the following figures.
    In each case, in a highly simplified, schematic representation:
    1 shows a cross section through a weld end of a joint connection with end crater and end crater tear;
    FIG. 2 shows a view of the weld end of a joint connection according to the invention; FIG.
    3 shows a cross section through a weld end of a joining connection according to the invention;
    4 shows a view of a further possible embodiment of a joint connection according to the invention;
    5 shows a section through a further possible embodiment of a joint connection according to the invention;
    Fig. 6 is a view of another possible embodiment of a erfin¬dungsgemäßen joint connection.
    1 shows a cross section through an assembly of a first metallic component 1 and a second metallic component 2, which are interconnected by means of a joint connection. The joint connection is formed by a weld 3, which bridges a joint 4, which is formed by joining surfaces 5 and 6 facing one another on the components 1 and 2, which faces each other and which abuts one another substantially without a gap. In FIG. 1, the components 1,2 with flat joining surfaces 5, 6 butt against one another and the weld 3 in this embodiment can be referred to as a butt seam 7.
    The weld 3 is produced by directing a high-energy welding beam 8, which is indicated in FIG. 1 by a dashed ray bundle, in the region of the joint 4 onto the components 1, 2. The welding beam 8 is thereby moved übli¬cherweise along the joint 4 and is thereby produced a largely constant weld 3 with largely consistent properties.
    At the end of such a welding process, the welding beam 8 is deactivated, thereby forming a weld end. At such a weld seam of a welded seam 3 produced by means of a welding beam 8, defects in the produced weld seam 3 may occur for the following reasons.
    In what are known as beam welding methods, in which the welding beam 8 is formed, in particular by a laser beam or an electron beam, a so-called keyhole, which is filled with evaporating metal and surrounded by molten metal, is created at the point of incidence of the welding beam 8. Such a keyhole allows deep penetration of the welding beam 8 and is such a characteristic feature of so-called deep welding. As the welding beam 8 moves along the joint 4, the keyhole advances accordingly, while the back of the keyhole is closed by solidifying molten metal. If the power of the welding beam is now reduced or completely deactivated at a welding seam, very rapid solidification processes occur due to the lack of energy input and rapid heat dissipation into the interior of the components 1, 2, and these are often so fast that at the weld seam end Craters or notches remain, which lead to said end crater cracks immediately after the welding process or in the later use of such an assembly, which can consequently trigger a mechanical failure of the assembly. FIG. 1 shows such a end crater 9 with an end crater crack 10 originating from its base.
    In the case of assemblies with high mechanical strength requirements, in particular under dynamic loading, such weak points due to end crater cracks 10 must be avoided at all costs, and therefore beam welding processes have been developed which should avoid the occurrence of such end craters 9 and such final cracks 10.
    FIG. 2 shows a view of a possible embodiment of a joint connection according to the invention between a first metallic component 1 and a second metallic component 2. The joint in the form of a weld 3 is formed by a welding beam 8, wherein in FIG. 2 a point of incidence 11 of the welding beam 8 during the Fierstellung the weld 3 is indicated by a dashed circle. The point of incidence 11 of the welding beam 8 may also be referred to as the welding beam focus and typically has diameters of a few tenths of a millimeter to a millimeter or even higher. In the case of the position of the weld seam 3, the center of the welding beam is moved and the points of incidence 11 on the components 1, 2 define a weld seam path 13. By heat conduction within the components, melting of the material also takes place beyond the impact location 11, which is why a weld seam width 14 is greater than the diameter of the Schweißstrahlfokusbzw. of the impact location 11 and the weld seam width 14 is at least a few tenths of a millimeter larger than the diameter of the welding beam focus.
    The joint connection according to the invention comprises a first weld seam section 15 in which the weld seam web 13 extends substantially along the joint joint 4 between the components 1 and 2 and a uniform weld seam 3 is produced due to a substantially constant welding speed and constant welding performance, in particular an approximately constant weld seam width 14.
    The first weld seam section 15 is adjoined by a second weld seam section 16, in which a weld end 17 is formed.
    In Fig. 2, a welding direction 18 is indicated by a pointing to the right arrow. That is, the welding beam 8 is moved further in the Fierstellung the weld 3 from left to right.
    The weld seam track 13 connecting the centers 12 of the points of incidence 11 of the welding beam 8 is also the track along which the keyhole moves during the welding process.
    In the production of the weld seam 3, the welding beam 8 can be operated with continuous power, but it is also possible for the welding beam 8 to be used in pulsed operation, ie with brief interruptions, and therefore the impact locations 11 do not follow each other seamlessly, due to the spatial extent of the metal melted around the keyhole, a substantially uniform weld 3 can also be produced in pulsed operation.
    According to the invention, the weld end 17 in the second weld section 16 is designed in such a way that the weld seam path 13 alternately has a deflection 19 into the first component 1 and a deflection 20 into the second component 2 in the manner of an oscillation aligned transversely to the joint 4. In the embodiment according to FIG. 2, the weld seam web 13 has two deflections 19 in the first component 1 and one deflection 20 in the second component 2 in the weld end 17. The center 12 of the welding beam 8 becomes different from the first weld seam segment 15 during the production of the weld seam end 17 in the second weld section 16 is moved not only in the welding direction 18 along the joint 4, but also transversely thereto and thereby crosses the Schwei߬nahtbahn 13 between a deflection 19 in the first component 1 and a Aus¬ steering 20 in the second component 2 the joint 4 and also between a deflection 20 in the second component 2 and a subsequent deflection 19in the first component 1. This results in a first crossing point 21 and ei¬ner second subsequent crossing point 22 of the weld seam 13 with the joint 4 in the illustrated embodiment of FIG .. 2 the weld seam path 13 is similar to a sinusoidal migen vibration, wherein the Auslen¬kungen 19, 20 are each half-wave-like. Deviating from this, however, deflections 19, 20 are also possible, which run in a zigzag, sawtooth, right-angled, trapezoidal, wavy manner. The weld seam web 13 ends after the second deflection 19 in the first component 1 at a Schweißbahnend¬ point 23, which is approximately in Fig. 2 on the joint 4. Between the first weld seam section 15 and the weld web end point 23, in which the welding beam 8 is deactivated, the power of the welding beam is reduced.
    According to the invention, two consecutive crossing points 21, 22 have a distance 24, which corresponds to a maximum of the weld seam width 14 in the first weld seam section 15. Alternate deflections 19, 20 in the first component 1 or the second component 2 are thereby not stretched long, but take place relatively short in a row. Since the distance between the points of intersection 21, 22 relative to one another is smaller than the width of the weld seam 14, the molten metal flows through the welding beam 8 at its points of incidence 11 as it passes through the deflection 20. As a result of this multiple transverse movement of the welding beam 8 in the region of the weld seam end 17, an enlarged melt bath cools down more slowly due to its larger volume than the straight-line weld seam 3 in the first weld seam section 15. The molten metal thus has a longer time, a largely closed surface of the weld seam 3 in particular, whereby the formation of deep, sharp-edged or notched end craters is largely avoided. Likewise, the associated end crater cracks are largely avoided.
    The deflections 19, 20 of the weld seam track 13 each have local maximum deflections 25 and 26 transversely to the joint 4 into the first component 1. By means of these deflections 19, 20 according to the invention, the welded seam end 17 formed from solidified molten metal has a corrugated edge with corrugations 27 in plan view and troughs 28 on. In deflections 19, 20, in which the welding beam 8 is still operated with comparatively high power, the wave crests 27 correspond to the local maximum deflections 25, 26 of the weld seam 13 into the respective component 1, 2, which also produces a characteristic edge in a weld seam end according to the invention 17ergibt.
    If the joint connection is designed as a butt seam 7, it is advantageous if in the weld end 17 the maximum deflection 25 of the weld seam track 13 in the first component 1 substantially coincides with the maximum deflection 26 of the weld seam track 13 in the second component 2.
    During the production of the joint connection, the welding beam 8 is aligned with the joint 4 between the components 1, 2 in such a way that the joint 4 comes to lie in the later weld seam 3, that is to say substantially perpendicular to the surfaces of the components in the case of a butt weld 1.2.
    FIG. 3 shows, in an enlarged detail, a section through a joint according to the invention according to line III-III in FIG. 2. It can be seen that at the weld seam surface 29 a final crater 9 or final crack 10 in FIG joining compound according to the invention is not present. The mechanical resilience of the joint connection is significantly improved by the lower notch effect of this weld seam surface 29.
    FIG. 4 shows a further embodiment of the joint connection, which may be independent of itself, and in which again the same reference numerals or component designations are used for the same parts as in the preceding FIGS. 1 to 3. To avoid unnecessary repetition, reference is made to the detailed description in the preceding Figures 1 to 3.
    The embodiment according to FIG. 4 shows features which differ from the embodiment according to FIG. 2, but can be features of further embodiments individually or in combination with one another.
    In Fig. 4, the weld seam 13 in the second weld section 16 is non-symmetrical with respect to the joint 4, but the deflections 19 inden the first component 1 are designed with a smaller deflection 25 and the deflections 20 are executed in the second component 2 with a larger Maximalauslenkung26. The maximum deflection 26 of the weld seam track 3 corresponds to at least twice, preferably three times, in particular four times, the maximum deflection 25 of the weld seam track 3 into the first structural part 1, that is to say a ratio of the maximum deflections 25, 26 of 20% and 80%. The individual deflections 19, 20 are, for example, symmetrical with respect to a reference line 30 offset parallel to the joint 4.
    In the embodiment according to FIG. 4, the weld seam web 13 in the weld seam end 17 has a first deflection 19 in the first component 1, a subsequent second deflection 20 in the second component 2, a third deflection 19 again into the first component 1 and a fourth deflection 20 in the second component 2 aufund ends in a welding path end point 23, which lies in the first component 1. By this form of the weld seam 13, there are two further crossing points 31 and 32 of the weld seam path 13 with the joint 4, as well as the crossing points 21, 22. Here, too, successive points of intersection 21, 22, 31, 32 are at a distance from each other, which is the maximum of the weld seam width 14 in the ers¬ th weld section 15 corresponds. The deflections 19 in the first Bau¬ part, may have the same maximum deflections 25, as well as the Auslen¬kungen 20 in the second component; However, it is also possible that the deflections 19 in the first component 1 or the deflections 20 in the second Bau¬teil 2 different, in particular decreasing Maximalauslenkungen 25 bzw.26 has.
    FIG. 5 shows in a partial sectional view a further embodiment of the joint connection according to the invention, in which the weld seam 3 is designed in the form of a fillet weld 33. The joining joint 4 is formed in this joint connection such that an edge 34 of the second component 2 rests on a surface 35 in a gap-free manner. In the illustrated embodiment, the second component 2 is arranged at a right angle to the first component 1, but also oblique arrangements of the component 2 are possible. Since the joint 4 coincides with the surface 35 of the one component 1 in the case of a fillet weld 33, the welding beam 8 can not be fed exactly in the direction of the joining joint 4, but its direction must deviate slightly from the direction of the joining joint 4. To achieve this, the welding beam 8 is guided at an acute angle 35 to the surface of the first component 1 to the joint 4.
    In the production of the joint compound of the invention or in the Durch¬führung of the method according to the invention, it is advantageous if the case
    Welding beam 8 relative to a position shown in dashed lines in Fig. 5, in which the first weld section 15 is made in the second Schweißnahtab¬ section 16 different deflections 19, 20 in the first component 1 and the second component 2. Advantageously, a division of the maximum deflections 25, 26 is selected here, as it approximately corresponds to the exemplary embodiment illustrated in FIG. 4. Accordingly, FIG. 4 could also be regarded as a view of a fillet weld 33 in the direction IV-IV in FIG. 5.
    The weld seam 3 is accordingly oriented at a fillet weld 33 in the first weld seam section 15 approximately at the accessible end of the joint 4, while in the second weld seam section 16 it is positioned for the most part on the second component 2 and accordingly the greater part of the weld seam end is located in the structural part 2 is.
    FIG. 6 shows a further embodiment of the joint connection, which is possibly independent of itself, wherein the same reference numerals or component designations are again used for the same parts as in the preceding FIGS. 1 to 5. To avoid unnecessary repetition, reference is made to the detailed description in the preceding Figures 1 to 5.
    In this embodiment of the joint connection, an alternating sequence of deflections 19 in the first component and deflections 20 in the second component are carried out in the weld end 17, in this embodiment the welding direction 18 after the second deflection 19 of the weld seam 13 into the first component 1, the welding direction 18 is changed to the left direction, whereby the third deflection 19 comes to rest in the first component 1 between the first and second deflection 19. In this embodiment, the welding web end point 23 lies closer to the beginning of the weld seam end than to the outermost weld seam end 36. Also by means of this embodiment, the multiple deflections 19, 20 of the weld seam web 13 transversely to the joint 4 achieve an enlarged melt bath which does not produce final crack -term.
    The exemplary embodiments show possible embodiments of the joint connection, wherein it should be noted at this point that the invention is not limited to the specifically illustrated embodiments of the same but much more diverse combinations of the individual embodiments are inter alia possible and this possibility of variation due to the teaching of technical action by subject invention im Can the expert working in this technical field.
    Furthermore, individual features or combinations of features from the different embodiments shown and described can also represent solutions that are inventive, inventive or inventive.
    The problem underlying the independent inventive solutions can be taken from the description. All statements on ranges of values in the description given herein are to be understood as including any and all subsections thereof, for example, the indication 1 to 10 should be understood as encompassing all subranges, starting from the lower bound 1 and the upper bound 10, i. all subregions begin with a lower limit of 1 or greater and end at an upper limit of 10 or less, e.g. 1 to 1.7, or 3.2 to 8.1, or 5.5 to 10.
    Above all, the individual in Figs. 2, 3; 4; 5; The embodiments shown in FIG. 6 form the subject of independent solutions according to the invention. The related objects and solutions according to the invention can be found in the detailed descriptions of these figures.
    For the sake of order, it should finally be pointed out that in order to better understand the joint connection, these or their components have been shown partly unevenly and / or enlarged and / or reduced in size.
    In conclusion, it should be noted that in the differently described embodiments, the same parts are provided with the same reference numerals or the same component designations, the descriptions contained in the entire description
    Revelations mutatis mutandis to the same parts with the same reference numerals or similar component names can be transferred. Also, the location information chosen in the specification, such as top, bottom, side, etc. related to the immediately described and illustrated figure and these Lage¬angaben in a change in position mutatis mutandis transferred to the new location.
    LIST OF REFERENCE NUMERALS 1 component 31 crossing point 2 component 32 crossing point 3 weld 33 fillet weld 4 joint 34 edge 5 joining surface 35 angle 6 joining surface 36 weld end point 7 butt weld 8 welding jet 9 end crater 10 end crater tear 11 impact location 12 center 13 weld seam 14 weld seam width 15 first weld seam section 16 second weld seam section 17 weld seam end 18 Welding direction 19 Deflection 20 Deflection 21 Crossing point 22 Crossing point 23 Weld end point 24 Distance 25 Maximum deflection 26 Maximum deflection 27 Wellenberg 28 Wellental 29 Weld surface 30 Reference line
    权利要求:
    Claims (15)
    [1]
    1. joint connection between a first metallic component (1) and a second metallic component (2) of an assembly, which at their mutually facing and substantially gapless abutting joining surfaces (5,6) form a joint (4) and via a by a welding beam ( 8), in particular laser or electron beam, welded seam (3) are connected to one another, whereby the weld seam path defined by the points of incidence (11) of the center (12) of the welding beam (8) on the components (1, 2) 13) in a first weld seam section (15) runs substantially along the joining joint (4) and the weld seam (3) has an approximately constant weld seam width (14) and in a subsequent second weld seam section (16) a weld seam end (17 ), characterized in that, viewed in the welding direction (18), in the manner of a welding seam (13) in the second weld seam section (16) alternately a deflection (19) into the first component (1) and a deflection (20) in the second component (2), wherein two or more points of intersection (21,22, 31, 32 , ...) of the weld seam track (13) with the joining joint (4) are formed and successive crossing points (21, 22, 31, 32) have a distance (24) from one another which is at most the width of the weld seam (14) in the first weld seam section (21). 15) corresponds.
    [2]
    2. Joining connection according to claim 1, characterized in that the weld seam end (17) formed from solidified melt has in plan view a wavy edge with wave crests (27) and wave troughs (28), wherein waveguides (27) with the local maximum deflections ( 25, 26) of the weld seam track (13) in the respective component (1,2) correspond.
    [3]
    3. joint connection according to claim 1 or 2, characterized in that the joint connection is formed as a butt weld (7) and in the second weld seam section (16) transversely to the joint (4) measured maximum deflection (25) of the weld seam (13) in the first Component (1) substantially coincides with the Maximalauslenkung (26) of the weld seam track (13) in the second component (2).
    [4]
    4. joint connection according to claim 1 or 2, characterized in that the joint connection as a fillet weld (33) is formed, wherein the joint (4) is formed in that an edge (34) of the second component (2) on a surface (35 ) of the first component (1) and the welding beam (8) is guided at an acute angle (35) to the surface of the first component (1) to the joint (4), and that in the second weld portion (16) the maximum deflection (26 ) of the weld seam track (3) in the second component (2) at least twice, preferably three times, in particular four times the Maximal¬auslenkung (25) of the weld seam track (3) in the first component (1).
    [5]
    5. joint connection according to one of the preceding claims, characterized in that the sum of the maximum deflection (25) of the Schwei߬nahtbahn (3) in the first component (1) and the maximum deflection (26) of the weld seam track (3) in the second component (2 ) between 0.8 times and 2 times the weld seam width (14), preferably between 1.2 times and 1.5 times the weld seam width (14).
    [6]
    6. joint connection according to one of the preceding claims, characterized in that successive crossing points (21,22) of the weld seam web (13) with the joint (4) to each other at a distance (24) have the distance between the 0.2-fold and the 0th 8 times, preferably between 0.4 times and 0.6 times, the weld seam width (14) in the first weld seam section (15).
    [7]
    7. joint according to one of the preceding claims, characterized in that the weld seam track (3) successively a first deflection (19) in the first component (1), a second deflection (20) in the second component (2) and a third deflection (19) in the first component (1) auf¬ and then in a welding path end point (23) in which the welding beam (8) is deactivated ends.
    [8]
    8. joint connection according to one of claims 1 to 6, characterized gekenn¬zeichnet that the weld seam track (3) successively a first Auslen¬kung (19) in the first component (1), a second deflection (20) in the second component (2 ), a third deflection (19) in the first component (1) and a fourth deflection (20) in the second component (2) and then in a Welding endpoint (23) in which the welding beam (8) is deactivated ends.
    [9]
    9. joint connection according to one of the preceding claims, characterized in that a Schweißbahnendpunkt (23) of the weld seam track (3) by the welding beam (8) is switched off at the joint (4).
    [10]
    Fastening joint according to one of the preceding claims, characterized in that the weld web end point (23) lies in front of the outermost weld end point (36) by reversing the welding direction (18).
    [11]
    11. A method for producing a joint connection between a Ers¬ten metallic component (1) and a second metallic component (2) of a Bau¬ group, which at their mutually facing and substantially gap-free contiguous joining surfaces (5, 6) a joint (4) and the components (1, 2) are connected to each other via a weld seam (3) produced by a welding beam (8), in particular a laser or electron beam, by passing through the points of incidence of the center (12) of the welding beam ( 8) on the components (1,2) defined weld seam (3) in a first Schweißnahtab¬ section (15) is guided substantially along the joint (4) and the weld seam (3) has an approximately constant weld width (14) and in a subsequent second weld seam section (16), a weld seam end (17) is formed, characterized in that in the second weld seam section (16) the weld seam web (3) in Schw In the form of an oscillation oriented transversely to the joint (4), the direction of erosion (18) is alternately guided in a deflection (19) in the first component (1) and in a deflection (20) in the second component (2), the weld seam track (3 ) is guided in such a way that it has two or more points of intersection (21, 22) with the joining joint (4) and that successive intersection points (21, 22) have a distance (24) from one another which is at most equal to the width of the weld seam (14). equivalent.
    [12]
    12. The method according to claim 11, characterized in that in the second weld seam section (16) the deflections (19, 20) of the weld seam web (13) opposite the joining joint (4) are selected from a group comprising sinusoidal, zigzag-shaped sawtooth, rectangular, Trapezför¬mig, wavy performed.
    [13]
    13. The method according to claim 11 or 12, characterized in that the power of the welding beam (8) from a substantially constant Aus¬gangsleistung (37) in the first weld section (15) in the second Schweißnaht¬ section (16) until reaching a Schweißbahnendpunktes (23 ), in which the welding beam (8) is deactivated, is reduced to less than 20% of the output power (37).
    [14]
    14. The method according to claim 13, characterized in that the power in the second weld section (16) is reduced modulently in decreasing amplitude.
    [15]
    15. The method according to any one of claims 11 to 14, characterized gekenn¬zeichnet that the movements of the welding beam (8) relative to the assembly in the first weld section (15) by a welding head moving CNC axes are performed and in the second weld section (16) zumin¬ at least the deflections of the welding beam (8) across the joint (4) are carried out by means of an optical deflection system which is arranged in or on the welding head and can be adjusted independently of the CNC axes.
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    同族专利:
    公开号 | 公开日
    AT514970B1|2015-09-15|
    WO2015058225A3|2015-08-06|
    DE112014004811A5|2016-09-01|
    WO2015058225A2|2015-04-30|
    引用文献:
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    WO1982002352A1|1981-01-02|1982-07-22|Sciaky Bros|Method for electron beam welding|
    US20040182836A1|2003-02-28|2004-09-23|Wolfgang Becker|Process for laser beam welding with reduced formation of end craters|
    JP3453972B2|1995-12-27|2003-10-06|トヨタ自動車株式会社|Laser welding method and apparatus|
    CN101716701A|2009-12-10|2010-06-02|哈尔滨工业大学|Method for realizing swing welding with laser-GMA electric arc hybrid welding device|
    DE202012102318U1|2012-06-22|2012-07-12|Stiwa Holding Gmbh|Joining connection between metallic components and welding device|DE102016206676A1|2016-01-20|2017-07-20|Mahle International Gmbh|Method for producing a weld by means of laser welding|
    DE102016204556A1|2016-03-18|2017-09-21|Bayerische Motoren Werke Aktiengesellschaft|Method for laser beam welding, weld seam and laser beam welding device|
    DE102016003801B4|2016-03-26|2021-10-07|Audi Ag|Method for producing a joint connection by welding and joint connection produced according to the method as well as a component group with components joined according to the method|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50677/2013A|AT514970B1|2013-10-21|2013-10-21|Joining connection and beam welding process|ATA50677/2013A| AT514970B1|2013-10-21|2013-10-21|Joining connection and beam welding process|
    PCT/AT2014/050249| WO2015058225A2|2013-10-21|2014-10-17|Joint connection and beam welding method|
    DE112014004811.9T| DE112014004811A5|2013-10-21|2014-10-17|Joining connection and beam welding process|
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