JP2022001383A - Welded component arrangement and method for producing welded component arrangement - Google Patents

Abstract

To provide a welded component arrangement and a method for producing the welded component arrangement.SOLUTION: The present invention relates to a component arrangement comprising at least a first component (2), a second component (3) and a welded joint with a weld seam (4) which connects the first component (2) to the second component (3), where the weld seam (4) is formed at an angle α≤90° to a surface (20) of the first component (2), so that the weld seam (4) extends obliquely through the first component (2) into the second component (3).SELECTED DRAWING: Figure 1

Description

The present invention relates to a welded part configuration in which at least the first part and the second part are connected by a weld connection, a method for connecting at least the first part and the second part to each other by welding, and a welding process. Regarding a laser welder for carrying out.

In laser welding, there are basically various weld seam shapes, and the requirements of each weld seam for the parts to be connected and also the positioning accuracy are different. For example, there is a butt weld seam, in which the two parts are arranged in one plane and a welded joint is formed perpendicular to the gap between the two parts. Further, so-called fillet weld seams are also known, in which fillet weld seams are arranged, for example, at right angles to each other and welded at right angles to each other. Overlap joints are also known, in which the components to be connected are arranged at least partially overlapped and are connected perpendicularly to each other in the overlap region, similar to a butt joint. However, in this case, basically, the requirement for positioning accuracy during the welding process is very high. This ensures that proper preparatory measures are taken when placing the part and that the part must be accurately positioned before welding. If the misalignment is too large, for example if the gap in the desired butt joint is too large, this can reduce the quality of the weld seam.

On the other hand, the configuration according to the present invention having the features according to claim 1 has an advantage that a welded connection having a welded seam can be carried out very easily and inexpensively. In particular, there is not much requirement for the positioning accuracy of the component to be connected. As a result, the time of the entire welding process can be significantly reduced. This is an important criterion, especially in the manufacture of mass-produced parts. Thus, for example, when creating a butt weld seam, according to the present invention, it is no longer necessary to precisely adjust the gap between the first part and the second part. Further, it is possible that the component to be connected has a height offset, which according to the invention no longer affects the welding process. It can also allow for greater tolerances with respect to the firing point of, for example, a laser beam or other welding equipment, without the drawbacks of connection quality with respect to the creation of weld seams. In particular, for example, in two components to be connected, they may be functionally aligned with each other and then the two components may be fixed over the non-matching surfaces. This can be used especially for welded connections of solenoid valves. This is achieved according to the invention by including at least the first and second parts and welded connections having weld seams. The weld seam connects the first part to the second part, where the weld seam is formed at an angle α <90 ° with respect to the surface of the first part. As a result, the weld seam to be connected is introduced obliquely through the first part to the second part. Therefore, weld seams extending through the part connect the part, especially in the internal area of the part. Therefore, the weld seam has a linear principal direction that reaches the interior of the component, which is configured to form an acute angle α with respect to the surface of the first component. This makes it possible to connect at least two components inexpensively but sufficiently reliably.

Dependent claims indicate a preferred embodiment of the invention.
Preferably, the first outer surface of the weld seam is formed only on the first part on the weld side of the part. As a result, in particular, the positioning accuracy for deploying the welding device can be further lowered.

More preferably, the second outer surface of the weld seam is formed only on the second part on the side opposite to the weld side of the part. Thereby, the weld seam preferably connects the two parts to be connected so that the inlet region of the weld seam is formed only in the first part and the exit region of the weld seam is formed only in the second part. It can be completely penetrated and extended.

Preferably, the angle α at which the linear principal direction of the weld seam is defined is in the range of 30 ° ≤ α ≤ 60 °, in particular 40 ° ≤ α ≤ 50 °, and more particularly in the range 44 ° ≤ α ≤ 46 °. Yes, especially the angle α is 45 °.

According to a further preferred embodiment of the invention, the weld seam does not extend completely through the two parts, extends completely through the first part, and extends only partially through the second part. It is configured as follows.

The weld seam is preferably a laser weld seam, particularly a fiber laser weld seam. Lasers, especially fiber lasers, have very high beam quality and can therefore produce very deep and fine weld seams, which can also be oriented at an angle to the surface of the part to be connected. can.

Further, the present invention is a method for connecting a first component to a second component.
-The step of placing the first and second parts in the desired connection position,
-To create a welded connection between the first part and the second part, a weld seam is created at an angle α ≤ 90 ° with respect to the surface of the first part and the first part in the internal region of the part. The present invention relates to a method including, and a step of creating a welded connection having a weld seam so as to reach a second part through. Here, the above advantages of the component configuration are achieved.

Preferably, the weld seam is created such that the first outer surface of the weld seam is formed only on the first part on the weld side.

More preferably, the weld seam is made such that the second outer surface of the weld seam is formed only on the second part on the side opposite to the weld side of the part. This makes it possible to generate a weld seam that is completely penetrated.

The method according to the invention preferably uses a laser, especially a fiber laser, to create the weld seam.

The weld seam can be configured as one or more spot weld seams, or as an alternative, as a continuous seam, and may be a continuous annular seam, especially for cylindrical parts. A plurality of weld seams may be provided side by side in order to increase the bonding force between the two parts.

In particular, when a plurality of weld seams are provided, they are such that the first weld seam is introduced into the first part to reach the second part and the second weld seam is introduced into the second part. It can be provided alternately to reach the first component. Therefore, when the weld seams are arranged alternately, the angle α can be used with alternating signs. Here, the same angle α can be used, or different angles α can be used as an alternative.

The method according to the invention is preferably carried out so that only the welding device is moved, only the component configuration is moved, or, as an alternative, both the welding device and the component configuration are moved.

Moreover, due to its simplicity, and due to its fairly low positioning accuracy, especially with respect to the positioning of parts, the method according to the invention, for example, has already passed some time since manufacture and can no longer be used in high precision welding processes. It should be noted that it can also be carried out by a laser welder that cannot. The wider tolerance of the method according to the invention allows, for example, older laser welders to continue to be used.

Further, the present invention relates to a laser welder including a laser, particularly a fiber laser, which is designed to carry out the method according to the present invention.

The configuration with the first and second parts and welded connections is preferably an injector, particularly an injector with a magnetic actuator in which the cover is welded to the inner pole.

Hereinafter, preferred exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

It is the schematic sectional drawing of the component structure by 1st Embodiment of this invention. It is a schematic plan view of the component structure of FIG. It is a schematic plan view of the component structure by the 2nd Embodiment of this invention. It is the schematic sectional drawing of the component structure by the 3rd Embodiment of this invention.

Hereinafter, an exemplary component configuration 1 according to the first preferred embodiment of the present invention will be described with reference to FIGS. 1 and 2.

As can be seen from FIG. 1, the component configuration includes a first component 2 and a second component 3, which are connected to each other via a weld connection having a weld seam 4.

The first component 2 and the second component 3 are arranged with respect to each other so that a vertical butt connection portion 7 exists.

As can be seen from FIG. 1, the weld seam 4 extending through the component here extends diagonally with respect to the surface 20 of the first component 2. Here, the weld seam 4 extends at an acute angle α of 45 °.

In FIG. 1, the linear principal direction 6 of the weld seam 4 is drawn in the form of a virtual straight line as the center line of the weld seam 4. Here, the weld seam 4 extends completely through the component configuration, so that the first outer surface 41 is formed on the first component 2 and the second outer surface 42 is formed on the second component 3.

As can be seen from FIG. 1, the first outer surface 41 is formed only on the surface 20 of the first component 2.

Similarly, as can be seen from FIG. 1, the second outer surface 42 is formed only on the outside of the second component 3. Therefore, the weld seam 4 extends linearly through the two parts completely and forms a welded connection between the two parts.

As can be seen from FIG. 2, the exemplary weld seam 4 of this embodiment is a spot weld seam.

In FIG. 1, a laser 5 is shown to illustrate the creation of a welded connection, the laser 5 being exemplified by a fiber laser in this embodiment. Here, the weld seam 4 is created by the laser beam 50. When creating a butt weld seam, it is not necessary to direct the laser beam 50 straight and vertically to the butt joint 7 as in the prior art, so if the two parts 2 and 3 are placed with very low accuracy before the welding process. good. In particular, the alignment of the laser beam 50 with respect to the butt connection portion 7 can be omitted. The laser beam 50 can be easily directed at the surface 20 of the first component 2 at an acute angle α. Naturally, the distance between the first outer surface 41 and the butt joint 7 becomes too large depending on the acute angle α so that a suitable welded connection can be created between the first part and the second part. must not. Here, the alignment of the laser beam 50 must be performed so that the weld seam 4 extends through the first component 2 and at least partially through the second component 3, as shown in FIG. Must be.

FIG. 3 shows an exemplary component configuration 1 according to a second embodiment of the present invention. Here, the same or functionally identical parts are designated by the same reference numerals.

In contrast to the illustration in the first embodiment where spot welding is provided for the connection of the two parts, the illustration in the second embodiment provides an elongated weld seam 4. Here, the weld seam extends over the total width 8 of the first component 2. Thereby, the first outer surface 41 exemplified in the second embodiment is designed as a wide straight strip extending parallel to the butt connection portion 7. The weld seam 4 also extends completely through the first part 2 and the second part 3, so that the second part 3 also has a second outer surface, which is shown in FIG. No. In order to schematically create the weld seam 4 in the second embodiment, a relative motion between the laser 5 and the component configuration 1 is required. In this case, it is possible to move only the laser, move only the component configuration, or move both the laser and the component configuration.

FIG. 4 shows an exemplary component configuration 1 according to a third embodiment of the present invention. Here, the same or functionally identical parts as those illustrated in the first embodiment are designated by the same reference numerals.

As can be seen from FIG. 4, the component configuration 1 has an offset 10. Here, the surfaces of the first component 2 and the second component 3 are no longer arranged on a common plane and are offset in parallel. When the parts are so offset and arranged, in the prior art, fillet weld seams are typically created at the butt joint 7 with the corresponding positioning requirements. According to the present invention, here, it is possible to provide an oblique weld seam 4 between two parts 2, 3 without requiring a large alignment accuracy. Here, according to the present invention, a reliable connection between the first component 2 and the second component 3 can be similarly achieved. The angle α is about 45 °. Further, as can be seen from FIG. 4, the weld seam 4 is not formed through the second part 3, but extends through the first part 2 and only partially through the second part 3. Extend. Thereby, the weld seam 4 has only one outer surface, i.e., the first outer surface 41. This welded connection is particularly applicable to parts with relatively large thicknesses. Here, in order to provide a reliable weld connection, the weld seam 4 should have some depth into the second component 3 in its linear principal direction 6.

2 First part 3 Second part 4 Welding seam 20 Surface 41 First outer surface 42 Second outer surface

Claims (11)

A part including at least a first part (2), a second part (3), and a welded connection having a weld seam (4) connecting the first part (2) to the second part (3). In the configuration, the weld seam (4) is formed at an angle α ≦ 90 ° with respect to the surface (20) of the first part (2), whereby the weld seam (4) is formed as described above. A component configuration that reaches the second component (3) through the first component (2) at an angle to the surface. The component configuration according to claim 1, wherein the first outer surface (41) of the weld seam (4) is formed only on the first component (2) on the weld side. The component configuration according to claim 1 or 2, wherein the second outer surface (42) of the weld seam is formed only on the second component (3) on the side opposite to the weld side. 3. Described component configuration. The component configuration according to any one of claims 1 to 4, wherein the weld seam does not extend completely through the second component (3). The component configuration according to any one of claims 1 to 5, wherein the weld connection comprises a laser weld seam, particularly a fiber laser weld seam. A method for connecting at least the first component (2) to the second component (3).
A step of arranging the first component (2) and the second component (3) at a desired connection position, and
In order to sufficiently create a welded connection between the first part and the second part, the weld seam (4) has an angle α <90 ° with respect to the surface (20) of the first part (2). And the step of creating a welded connection having the weld seam (4) so as to pass through the inside of the first part (2) and reach the inside of the second part (3).
How to include. The welding seam (4) is made in claim 7, wherein the first outer surface (41) of the welding seam (4) is formed only on the first part (2) on the welding side. The method described. The weld seam (4) is made to extend completely through the first part (2) and the second part (3), whereby the second outer surface of the weld seam (4). 42. The method of claim 7 or 8, wherein (42) is formed only on the side of the component configuration opposite to the welded side. The method according to any one of claims 7 to 9, wherein a laser, particularly a fiber laser, is used to create the weld seam. A laser welder comprising a laser (5), particularly a fiber laser, the laser welder designed to carry out the method according to any one of claims 7-10.

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