FR3112708A1 - Service table for a laser device of a laser welding and/or laser brazing installation - Google Patents

Abstract

The invention relates to a service table (10) for a laser device of a laser welding and/or laser brazing installation, the service table comprising at least one foot (12) with a lower end intended to be placed on the ground and an upper end on which is mounted a support plate (14). The service table (10) is modular in that it comprises at least one common measurement tool for calibrating the laser device and in that the support plate further comprises at least one attachment interface for attachment to the support plate for at least one specific tool chosen from at least one tool specific to laser brazing or at least one tool specific to laser welding. Figure to be published with abstract: Fig. 1

Description

Service table for a laser device of a laser welding and/or laser brazing installation

The present invention relates to the field of assembly by welding or laser brazing of metal parts. The present invention relates to service tables for robotic installations for welding and/or laser brazing of parts intended for the manufacture of motor vehicles.

In automotive manufacturing, robotic laser welding and brazing systems are used to make welds between body parts.

In the context of welding, there are mainly two technologies, the first called fixed focus and the second called scanning also called RWS (in English, Remote Welding System).

In the context of braze welding, the laser is associated with a material supply system in order to produce weld beads.

Welding and braze-welding installations generally comprise a robot able to move relative to the parts to be welded and comprising a head and a box for controlling the movements of the head. The head is responsible for generating a laser beam and directing this laser beam to produce weld beads.

To ensure certain useful service functions for start-up, adjustment, fine-tuning or operation during the life of the installations, the installations are equipped with measurement tools for calibrating the laser and its positioning. These tools can be placed on a service table near the robot.

The service table includes tools adapted to the type of laser welding or brazing that is carried out by the installation. Thus, the service table can carry tools allowing the calibration of the welding or brazing head, the control of the position of the focal point, the measurement of the laser power, the lengthening of a filler wire for the brazing head, the production of representative welded or brazed specimens for the validation of the parameters, etc...

Due to this wide variety of tools, the service table is manufactured and designed specifically for each installation project, and occupies a significant part of the design costs of a welding or brazing installation. We are therefore looking for a solution to improve this situation.

In the state of the art, document EP2576122 discloses a device for making a junction between two metal sheets by laser welding. The device makes it possible to weld overlapping parts, but does not describe a service table for calibrating the laser device.

Document EP0440001 describes a device for laser welding. The device comprises a welding station with a welding station and a conveyor belt for moving the body parts from and to the welding station. This device is flexible in the sense that it allows the welding of different types of body parts. On the other hand, the document does not show any service device for calibrating the power or the positioning of the laser device.

The document FR2532230 describes an automated computer-controlled machining device allowing the laser welding of workpieces. The apparatus includes a laser device, an optical system for guiding the laser beam, and a thermopile device for measuring the power of the laser beam. The laser beam is deflected towards the thermopile in order to perform the measurements. This service device for the laser head does not offer the possibility of calibrating the position of the laser.

None of the prior art documents offers a solution for designing a new service table for a welding or brazing installation.

The aim of the invention is to respond to at least one of the drawbacks and problems encountered in the prior art. To this end, the invention proposes a service table of simple design for a laser welding and/or brazing installation, which makes it possible to reduce the design and manufacturing costs of a new installation.

According to a first aspect, the invention proposes a service table for a laser device of a laser welding and/or laser brazing installation, the service table comprising at least one foot with a lower end intended to be placed on the ground and an upper end on which is mounted a support plate; the service table is remarkable in that it is intended to comprise at least two tools, the service table comprising at least one common measurement tool for calibrating the laser device and being intended to receive at least one specific tool chosen from among at least one tool specific to laser brazing or at least one tool specific to laser welding, and in that the support plate further comprises at least one fixing interface for the fixing on the support plate of at least one specific tool .

The table thus obtained is modular and can be adapted according to the welding and/or laser brazing installations and according to the parts to be treated. The table includes one or more common measurement tools for calibrating the laser device that can be used for both laser brazing and laser welding. These common tools are carried by the table at the level of its foot and/or its support plate. The support plate is also configured to form a common base on which can be removably fixed, thanks to the fixing interfaces, specific tools adapted to the welding technology used and the type of parts produced.

The attachment interfaces make it possible to mount tools according to a given configuration for an installation, then to disassemble them and/or reassemble them according to another configuration. As the table can be reused after the end of life of the installation, its price can be deducted from a new installation, thus reducing the cost of designing and manufacturing the installation.

In embodiments, the serving table includes a single support tray.

In embodiments, the support tray; preferably, the single support plate comprises at least two attachment interfaces for attaching at least two different tools including at least one specific tool; for example, for fixing at least two specific tools; and/or for example, for fixing at least one common tool and at least one specific tool.

In embodiments, the support tray; preferably, the single support plate comprises a through hole, and a common measurement tool for calibrating the laser device is a laser beam power control sensor. Preferably, the laser beam power control sensor is mounted on the foot or in the foot so as to be placed facing the through hole of the support plate. The laser beam power control sensor is disposed under the support plate and thus receives a laser beam from the laser device placed above the support plate.

Advantageously, the laser beam power control sensor is mounted on the foot or in the foot by height-adjustable mounting means. The laser beam power control sensor can then be positioned in height according to the focusing parameters of the laser beam.

Preferably, the foot comprises a housing in which said laser beam power monitoring sensor is mounted, said housing comprising a door for access to said laser beam power monitoring sensor.

Advantageously, the support plate comprises a through-hole and shows a center of symmetry, and the through-hole is offset from said center of symmetry.

Advantageously, the support plate comprises a through hole and the support plate showing an upper face and a lower face, the lower face being turned facing the ground, a protection cylinder is arranged at the level of the through hole so as to protrude from the top surface of the support tray. The protection cylinder makes it possible to protect the laser beam power control sensor by reducing the risk of objects, dirt or liquids falling on said laser beam power control sensor through said through hole.

Advantageously, at least one common measurement tool for calibrating the laser device is mounted on the support plate and is chosen from among a calorimeter sensor, a calibration tip and/or a calibration target.

Preferably, at least one common measurement tool for calibrating the laser device mounted on the support plate is fixed to the support plate by reversible fastening means. The reversible nature of the fixing means makes it possible, if necessary, to move the tool on the support plate and therefore to change the service table according to its destination or needs. The service table can, for example, offer symmetrical right-left fastening interfaces for the same tool, whether it is a common tool or a specific tool.

Preferably, the calorimeter sensor is mounted on a fixing plate made of a material forming a thermal insulator. For example, the support plate is made of steel and the fixing plate is made of a plastic material.

In some embodiments, the table comprises at least one tool specific to brazing chosen from among a wire cutter device, a wheel position control system, a horn-type test specimen support and/or a test specimen support of the trunk or shutter. The roll position control system is a specific tool used with a roll welding device.

In some embodiments, the table comprises at least one tool specific to laser welding chosen from a calibration target support, a marking specimen support for the generation of shape and/or a welding specimen support comprising two specimens arranged in a staggered manner.

Advantageously, the support plate is made of steel and at least one specific tool and/or at least one common measurement tool for calibrating the laser device is mounted on the plate by means of a fixing plate made of an insulating material. thermally. The tools, and particularly the tools for measuring the power of the laser beam, receive a continuous and fixed laser beam which can cause a strong local temperature rise. A fixing plate made of a thermally insulating material makes it possible to limit the increase in temperature of the surrounding tools which could disturb their operation or accelerate their wear.

Preferably, at least one interface for fixing the support plate; preferably, of the single support plate, comprises at least one threaded hole. The use of tapped holes makes it possible to fix tools by screws inserted into these tapped holes without requiring a nut to ensure tightening. It is then not necessary to keep access for the nut on the face of the support plate opposite to the insertion face of the screw, which makes it possible to fix tools on both faces of the support plate without restriction.

Preferably, the support plate has at least one axis of symmetry, and the attachment interfaces are arranged repeatedly symmetrically with respect to the axis of symmetry.

In some embodiments, at least one common measurement tool for calibrating the laser device and/or at least one specific tool is fixed on the support plate by means of a fixing plate mounted so as to be placed at least partly cantilevered relative to said support plate.

At least one common measurement tool for calibrating the laser device and/or at least one specific tool can then be fixed on the support plate without being aligned vertically with the latter. Thus, the surface of the support plate is less than the surface used for the support of the various tools.

In some embodiments, at least one specific tool is fixed to said support plate by means of a bracket. The square is advantageously configured to make it possible to mount a specific tool such as a wire cutter on the support plate and to orient it in a chosen direction in rotation along a horizontal axis.

Preferably, the support plate showing a lower face and an upper face, the lower face being turned facing the ground, at least one specific tool is fixed on the lower face of the support plate. Fixing on the underside of the support plate frees up space for fixing on the upper side of the support plate.

According to a second aspect, the invention relates to an installation comprising at least one laser welding device and/or a laser brazing device, noteworthy in that it comprises at least one service table according to the first aspect.

Other particularities and characteristics of the invention will emerge from the detailed description of at least one advantageous embodiment presented below, by way of illustration, with reference to the appended drawings. These show:

Figure 1 shows a perspective view of a serving table according to one embodiment of the invention;

Figure 2 shows a perspective view of a calorimeter sensor;

Figure 3 shows a perspective view of a calibration target;

Figure 4 shows a perspective view of a calibration tip;

Figure 5 shows a detail of a perspective view of a service table for a laser device of a scanning laser welding installation;

FIG. 6 shows a detail of a perspective view of a service table for a laser device of a seam laser welding installation carrying a horn-type specimen holder.

Figure 7 shows a side view of a detail of a horn type specimen holder;

Figure 8 shows a side view of a detail of a trunk or flap type specimen support.

In the rest of the description, the term “understand” is synonymous with “include” and is not limiting in that it authorizes the presence of other elements in the table or the installation to which it refers. It is understood that the term “include” includes the terms “consist of”.

Similarly, the terms "lower", "upper", "high" and "low" will be understood according to their usual definition, in which the terms "lower" and "low" indicate a greater proximity to the ground according to the direction vertical than the terms "upper" and "high" respectively.

In the rest of the description, elements having an identical structure or analogous functions will be designated by the same reference.

Figure 1 shows a service table 10 for a laser device of a laser welding and/or laser brazing installation. Apart from the service table, the installation is a classic type installation which will not need to be described in detail. It includes a laser device, not shown, such as a laser welding device and/or a laser brazing device. The laser device comprises a robot with a control box and a head for producing a laser beam and capable of moving relative to parts to be welded.

The service table 10 comprises a foot 12 with a lower end fixed to the ground, and an upper end opposite the lower end on which is mounted a support plate 14, preferably unique, formed by a metal steel plate. The foot is here fixed to the ground by screws, but according to variants, the foot can include wheels allowing the table to be moved, and the foot is therefore not fixed to the ground. The foot 12 is vertical cylindrical, for example with a square base, made of metal, preferably steel. Preferably, the foot 12 comprises at least one stiffening wall. For example, the foot 12 comprises at least one stiffening wall extending in the vertical direction. For example, the foot 12 comprises two vertical stiffening walls, not shown, arranged between the lower end of the foot and the support plate 14 perpendicular to one another.

The support plate 14 is a plate showing an underside 16 facing the ground, secured to the upper end of the foot 12; and an upper face 18, opposite the lower face 16. The support plate 14 can have any shape, or for example have a rectangular shape as in FIG. 1, thus showing two axes of symmetry and a center of symmetry.

Preferably, the support plate 14, and in particular the single support plate 14, comprises at least two attachment interfaces for attaching at least two different tools including at least one specific tool. For example, it comprises at least two attachment interfaces for attaching at least two specific tools; and/or it comprises at least two attachment interfaces for attaching at least one common tool and at least one specific tool. Preferably, it comprises a plurality of attachment interfaces that can be used both for attaching at least one common tool and at least one specific tool.

The support plate 14 includes a through hole 20 . The through hole 20 is arranged off-center with respect to the center of symmetry of the support plate 14. For example, the through hole 20 is arranged on the axis of symmetry of the support plate near an edge. The through hole 20 allows the laser beam to pass through the support plate to perform measurement and calibration operations. The support plate 14 also includes a protective cylinder arranged at the level of the through hole 20 so as to project from the upper surface 18 of the support plate. The protection cylinder makes it possible to prevent small objects placed on the support plate or cleaning liquids from passing through the through hole 20 and damaging a laser beam power control sensor 22 arranged under the support plate.

The table 10 is a modular table in that it comprises at least one common measurement tool for calibrating the laser device, and at least one fixing interface for fixing on the support plate at least one specific tool chosen from at least one tool specific to laser brazing or at least one tool specific to laser welding. Preferably, at least one common measurement tool for calibrating the laser device is fixed to the support plate by reversible fixing means and said support plate comprises at least one fixing interface for fixing to the support plate. at least one common measurement tool for calibrating the laser device. Preferably, the attachment interface(s) shown by the support plate are common and can be used either for the attachment to the support plate of at least one specific tool, or for the attachment to the support plate of at least least one common measurement tool for calibrating the laser device. According to a preferred embodiment, the attachment interfaces are in excess so that there remains at least one unused attachment interface on the service table.

In the exemplary embodiment illustrated in FIG. 1, the service table 10 includes three common measurement tools for calibrating the laser device. Depending on the variants, the table may include more or less common measurement tools for calibrating the laser device. Common measurement tools for calibrating the laser device include the laser beam power monitor sensor 22 shown in Figure 1, a calorimeter sensor 24 shown in detail in Figure 2, and a calibration tip 26 shown in detail in Figure 2. Figure 4. Depending on the needs, the calibration tip 26 can be replaced by a calibration target 28 shown in Figure 3. These tools have the particularity of being useful both in laser welding installations and in welding installations. laser welding.

The lower 16 and upper 18 faces of the support plate 14 include a plurality of attachment interfaces. These attachment interfaces can be in the form of single holes or tapped holes 30, said single or tapped holes possibly being through or not. These simple or tapped holes 30 can be used in cooperation with screws for fixing at least one common or specific tool by clamping against a face of the support plate. The use of fixing screws allows reversible fixing of each tool. Those skilled in the art will understand that any other appropriate means forming attachment interfaces can be used.

Preferably, the support plate includes at least one threaded hole. The tapped hole(s) possibly being blind holes or through-holes emerging both in the upper face and the lower face of the support plate; preferably, at least one tapped hole is a through hole.

The threaded holes 30 are arranged in groups on the support plate 14, for example in pairs. Each group or pair corresponds to a set of tapped holes necessary for fixing a common or specific tool to the support plate.

The groups or pairs of tapped holes 30 are arranged in a repetitive manner on the support plate 14 to provide several fixing positions for at least one common or specific tool. For example, the groups or pairs of tapped holes are arranged symmetrically with respect to all the axes of symmetry of the support plate. For example, a pair of tapped holes intended for the fixing of the calibration pin is arranged in each corner of the upper face 18 of the support plate and is repeated twice in each corner by symmetry with respect to a diagonal of the support plate. 14 going through this corner. Those skilled in the art will understand that other arrangements are possible.

Note that in the embodiment of Figure 1, the calorimeter sensor 24, and the calibration tip 26 are mounted on the upper face 18 of the support plate 14 through the tapped holes 30 and reversible fastening means. The laser beam power control sensor 22 is mounted on the foot or in the foot of the service table 10.

The common measurement tools for calibrating the laser device and certain tools specific to soldering or laser welding will now be described with reference to FIGS. 1 to 8.

In some embodiments, the service table 10 comprises a laser beam power control sensor 22. This tool is known to those skilled in the art and allows control of the power of the laser beam at the head output of the laser device. . It receives the laser beam, and transmits a value to the control box. This value is recorded and used to generate alerts in case of malfunction of the laser device.

The laser beam power control sensor 22 comprises a plastic casing so as to thermally isolate it from the rest of the table, and may also comprise a cooling system.

The laser beam power control sensor 22 is preferably mounted on a vertical rail 32 fixed to the foot of the service table 10. The laser beam power control sensor 22 is arranged so that it is placed in view of the hole 20 passing through the support plate 14. Thus, the laser beam power control sensor 22 is arranged below the table and receives the laser beam passing through the hole 20 passing through the support plate 14. Thanks to to the vertical rail 32, the laser beam power control sensor 22 is adjustable in height in order to be adapted to the focusing parameters of the laser beam.

The foot 12 advantageously comprises two vertical panels which form a housing for the power control sensor of the laser beam 22 making it possible to protect it from dust. The panels include a fixed panel 34 and a movable panel 36. The movable panel 36 forms a door for access to the laser beam power control sensor 22 in the event of maintenance. The panels are thus arranged on either side of the rail 32 and of the laser beam power control sensor 22 as shown in FIG. mobile 36 interchangeably on each side of the laser beam power control sensor 22. Thus, access to the laser beam power control sensor 22 can be adapted according to the available space and the dimensions in the facility.

In some embodiments, the service table 10 includes a calorimeter sensor 24. This tool is known to those skilled in the art and measures, in joules, the energy of the laser beam transmitted at the output of the head. These measurements are used to determine the reference power emission instructions from the source of the laser beam, and to determine any losses in the optical path between the source of the laser beam and the output of the latter on the parts to be assembled. .

The calorimeter sensor 24 shown in FIG. 2 is carried by a mounting plate 37 which allows it to be mounted on the upper face 18 of the support plate 14. The mounting plate 37 is made of a plastic material forming a thermal insulator so to avoid heat transmission to the support plate 14.

The calorimeter sensor 24 is then fixed on another fixing plate 38 which shows holes corresponding to those of the support plate. The fixing plate 38 then comprises openings for the passage of screws allowing it to be mounted on the support plate. As shown in Figure 5, the fixing plate 38 can be mounted on the upper face 18 of the support plate so as to be placed at least partially cantilevered relative to the support plate. The calorimeter sensor 24 is then no longer vertically aligned with the support plate 14 freeing up space on the support. The fixing plate 38 can be made of metal or even plastic so as to thermally insulate the calorimeter sensor 24 from the support plate 14. It is also possible that the fixing plate 38 has only an insulating function and is not placed at least partially cantilevered.

In some embodiments, the service table 10 comprises a calibration tip 26 and/or a calibration target 28. These tools are known to those skilled in the art and make it possible to check the positioning of the head of the laser device. These two elements shown in Figures 3 and 4 can occupy the same position on the table 10. One can replace the other as needed. To allow this replacement, the calibration tip 26 and the calibration target 28 are carried by the same fixing plate 40. This fixing plate 40 is a parallelepiped comprising openings for the passage of fixing screws by clamping on the upper face 18 of the support plate.

An embodiment of a service table 10 for a laser device of a scanning laser welding installation is shown in FIG. 5. The support plate 14 also carries a calorimeter sensor 24 mounted cantilevered as described above and the calibration target 28, a marking specimen holder 42 for pattern generation and a welding specimen holder 44 comprising two specimens arranged in a stepped manner. According to variants not shown, the support plate 14 carries a calibration target support instead of the marking specimen support.

In the embodiments of the service table 10 comprising a marking specimen support 42, the latter is preferably fixed directly to the support plate 14 by screws inserted into threaded holes 30 of the upper face of the support plate. 14. The marking specimen holder allows to fix and position a marking specimen 46.

The marking specimen 46 is known to those skilled in the art and makes it possible to control the autonomous operation of the head of the laser device. The robot positions its head above the marking specimen 46 in a static position, then various programmed engravings are carried out such as a rectangle, a straight line, or a circle.

The welding specimen support 44 is preferably carried by a fixing plate which is mounted on the upper face 18 of the support plate so as to be placed at least partially cantilevered with respect to the support plate. welding 44 is thus not vertically aligned with the support plate 14 freeing up space on said support plate.

The welding test piece holder 44 makes it possible to fix and position two welding test pieces 48.

The welding specimens 48 make it possible to control the dynamic operation of the laser device, in particular the synchronization between the emission of the laser beam and the movement of the head. By moving over the two welding specimens 48 the head produces a series of markings on two levels. This makes it possible to produce welded samples in order to check the functionalities of the robot such as welding parameters and movement speed.

According to variants not shown, the service table can be a service table for a laser device of a fixed-focus laser welding installation. In comparison with the embodiment of Figure 5, the service table does not include a marking specimen support for shape generation and includes a simple welding specimen, that is to say, which only has a single specimen and not two specimens arranged in a staggered manner. Due to the space freed by the absence of the marking specimen for the generation of shape, the calorimeter sensor and the simple welding specimen are vertically aligned on the support plate and not mounted in cantilever .

An embodiment of a service table 10 for a laser device of a roller laser welding installation is shown in FIG. 6. The principle of wheel welding, or with a pressing wheel, is known and described in the document FR3073762. In this embodiment, the support plate 14 preferably carries a calorimeter sensor 24, a calibration tip 26, a wire cutter 50, a wheel position control system 52, and a test specimen support.

In some embodiments, the service table 10 comprises a wire cutter 50. This tool is known to those skilled in the art and makes it possible to cut the wire to length and remove a burr formed by a solidified drop resulting from brazing. previous. The wire cutter 50 comprises a housing of substantially parallelepiped shape with one face oriented in a wire cutting plane which depends on the laser welding device used.

The wire cutter 50 is fixed to the support plate 14 by means of a fixing system comprising a bracket 54 and an axis of rotation, not shown. The bracket 54 is placed on the edge of the support plate 14 so that the thread cutter 50 is not vertically aligned with the support plate. The bracket 54 comprises a horizontal plate with openings for the passage of screws allowing the fixing of the bracket in the threaded holes 40 of the upper face 18 of the support plate, and a vertical plate connected to the wire cutter through of an axis of rotation not shown. Thus, the thread cutter 50 can be oriented in the desired direction around the axis of rotation. For safety, once the wire cutter is oriented, the connection between the bracket and the wire cutter is fixed by tightening and welding.

In some embodiments, the service table 10 includes a thumbwheel position control system 52. This tool makes it possible to check the position of the wheels of the thumbwheel relative to their initial settings. The support comprises fixed housings serving as a reference for positioning the wheels. This system is used in the event of an impact against the knob or after a new assembly of the latter.

The wheel position control system 52 comprises a mounting base fixed directly to the support plate 14 by screws inserted into tapped holes 30 of the upper face of the support plate 14.

In the embodiment of Figure 6, the serving table 10 includes a horn-type specimen support 56 as shown in detail in Figure 7.

The roof-type test piece support 56 is preferably mounted on the upper face 18 of the support plate 14. The roof-type test piece is made up of two sheets 58 forming an assembly close to the automotive product.

The horn type specimen holder 58 comprises a support plate 60 with two legs forming an angle. One branch includes openings so as to attach it to the underside 16 of the support plate 14, and the other branch supports a first clamping plate 62 for clamping the sheets 58. The horn-type specimen support 58 includes also a second clamping plate 64 for clamping the sheets 58. The first and second clamping plates are fixed together by clamping screws so as to form a housing groove for the sheets 58. The second clamping plate comprises through-threaded holes in which screws of the spring-loaded ball-type pusher type 66 are housed, which make it possible to press the plates 58 against each other in the housing.

In other embodiments of a service table for a laser device of a seam laser welding installation, the table comprises the same tools as in the embodiment of FIG. 6 with the exception of the support for pavilion type specimen. The latter is then replaced by a specimen support of the box or flap type 68, as shown in figure 8.

The trunk or flap type test specimen is made up of two 70 sheets making an assembly close to the automotive product.

The box or flap-type specimen support 68 has many features comparable to the horn-type specimen support 56. It includes a support plate 72 with two legs forming an angle, but in this case the two legs form an angle. right. One branch includes openings so as to fix it to the underside 16 of the support plate 14. The other branch supports a first clamping plate 74 and a second clamping plate 76 for clamping the sheets 70. The clamping plates are fixed together by clamping screws 78 so as to form a housing groove for the sheets 70. The second clamping plate 76 comprises through-threaded holes in which are housed screws of the spring ball pusher type 80 which allow to press the plates 70 against each other in the housing.

In the trunk or flap type specimen support 68, the second clamping plate 76 preferably comprises oblong holes, not shown, in which the clamping screws 78 are inserted. These oblong holes make it possible to modify the positioning of the second clamping plate 76 relative to the first clamping plate 74 so as to generate a mismatch, that is to say a difference in level, between the plates 70 as shown in Figure 8.

The embodiments of Figures 5 and 6 show examples of the arrangement of the tools on the support plate of the service table. These embodiments are not limiting and these same tools can be arranged differently or other tools can be mounted on the service table support plate.

Claims (10)

Service table (10) for a laser device of a laser welding and/or laser brazing installation, the service table (10) comprising at least one foot (12) with a lower end intended to be placed on the floor and an upper end on which is mounted a support plate (14); the service table (10) is characterized in that it is intended to comprise at least two tools, the service table (10) comprising at least one common measurement tool for calibrating the laser device (22, 24, 26 , 28) and being intended to receive at least one specific tool chosen from at least one tool specific to laser brazing or at least one tool specific to laser welding, and in that the support plate (14) further comprises at least one fixing interface for fixing on the support plate (14) at least one specific tool. Service table (10) according to claim 1 characterized in that the service table (10) comprises a single support plate (14); and/or in that the support plate (14) comprises a through hole (20) and a common measurement tool for calibrating the laser device is a laser beam power control sensor (22); preferably, the laser beam power control sensor is mounted on the foot (12) or in the foot (12) so as to be placed facing the hole (20) passing through the support plate (14). Service table (10) according to Claim 1 or 2, characterized in that the support plate (14) comprises a through hole (20) and shows a center of symmetry and the through hole (20) is off-center with respect to the said center of symmetry and/or in that the support plate (14) comprises a through hole (20) and the support plate (14) showing an upper face (18) and a lower face (16), the lower face (16) being turned facing the ground, a protective cylinder is arranged at the level of the through hole (20) so as to project from the upper surface (18) of the support plate (14). Service table (10) according to one of Claims 1 to 3, characterized in that at least one common measurement tool for calibrating the laser device is mounted on the support plate (14) and is chosen from a sensor calorimeter (24), a calibration tip (26) and/or a calibration target (28); preferably, at least one common measurement tool for calibrating the laser device mounted on the support plate (14) is fixed to the support plate (14) by reversible fixing means. Service table (10) according to Claim 1 to 4, characterized in that the service table (10) comprises at least one tool specific to braze welding chosen from among a wire cutter device (50), a wheel position control system (52), a horn type specimen holder (56) and/or a box or flap type specimen holder (68). Service table (10) according to Claim 1 to 4, characterized in that the service table (10) comprises at least one tool specific to laser welding chosen from among a calibration target support, a marking specimen support ( 42) for shape generation and/or a welding specimen holder (44) comprising two specimens arranged in a stepped manner. Service table (10) according to one of Claims 1 to 6, characterized in that the support plate (14) is made of steel and at least one specific tool and/or at least one common measuring tool for calibrating the laser device is mounted on the plate by means of a fixing plate made of a thermally insulating material and/or in that at least one fixing interface of the support plate (14) comprises at least one threaded hole (30 ). Service table (10) according to one of Claims 1 to 7, characterized in that at least one common measuring tool for calibrating the laser device and/or at least one specific tool is fixed to the support plate ( 14) by means of a fixing plate (38) mounted so as to be placed at least partially cantilevered with respect to said support plate (14). Service table (10) according to one of Claims 1 to 8, characterized in that at least one specific tool is fixed to said support plate (14) by means of a bracket (54) and/or in that that the support plate (14) showing a lower face (16) and an upper face (18), the lower face (16) being turned facing the ground, at least one specific tool is fixed on the lower face (16) of the support plate (14). Installation comprising at least one laser welding device and/or one laser brazing device, characterized in that it comprises at least one service table (10) according to one of Claims 1 to 9.