Cross beam and laser cutting machine

Abstract

The utility model relates to a cross beam and a laser cutting machine. The cross beam is applied to the laser cutting machine and comprises a cross beam body and two beam shoulders, the cross beam body extends in the first direction, the first direction intersects with the height direction, and the cross beam body is used for bearing a cutting head of the laser cutting machine. The two beam shoulders are connected to the two opposite ends of the cross beam body in the first direction respectively, the top faces of the beam shoulders are flush with the top face of the cross beam body, and the bottom faces of the beam shoulders are higher than the bottom face of the cross beam body. The beam shoulders with the bottom faces higher than the beam body are designed on the two sides of the beam body, the gravity center lowering design is achieved, the overall gravity center of the beam sinks and is kept at the same height as the gravity center of a sliding bridge of the laser cutting machine as much as possible, and the stability of the beam in the moving process is improved.

Description

Technical Field

[0001] The present application relates to the field of laser cutting technology, and in particular to a beam and a laser cutting machine. Background Art

[0002] A laser cutting machine is equipped with a cutting head that emits a high-energy laser beam, causing the workpiece to reach its melting or boiling point. Simultaneously, high-pressure gas coaxial with the beam blows away the molten or vaporized metal. As the beam and the workpiece move relative to each other, a slit is eventually formed in the material, achieving the desired cutting effect. Therefore, in order to process three-dimensional workpieces, the laser cutting machine must ensure that the cutting head has sufficient mobility.

[0003] Generally speaking, a laser cutting machine is equipped with a sliding bridge and a crossbeam. The crossbeam can move relative to the sliding bridge, and the cutting head is placed on the crossbeam to improve its mobility. However, since the cutting head needs to be equipped with a variety of optical components, power cables, and movable mechanical parts, it is relatively heavy. The crossbeam not only needs to support the weight of the cutting head and its accessories, but also needs to ensure stability during movement. Its material strength must be guaranteed, so the mass of the crossbeam is necessarily large. In the existing technology, the crossbeam is directly connected to the sliding bridge on both sides of the laser cutting machine, which has a high center of gravity and is difficult to ensure stability during the movement of the crossbeam. Utility Model Content

[0004] In view of this, the embodiments of the present application hope to provide a beam and a laser cutting machine to achieve the purpose of lowering the center of gravity of the beam.

[0005] To achieve the above-mentioned objectives, a first aspect of an embodiment of the present application provides a beam, comprising:

[0006] a beam body extending along a first direction, wherein the first direction intersects with the height direction;

[0007] Two beam shoulders are respectively connected to opposite ends of the beam body along the first direction, the top surfaces of the beam shoulders are respectively flush with the top surface of the beam body, and the bottom surfaces of the beam shoulders are higher than the bottom surface of the beam body.

[0008] In one embodiment, the beam shoulder includes a beam shoulder body and a bottom plate arranged on the bottom side of the beam shoulder body, and in a projection plane perpendicular to the height direction, the projection of the bottom plate covers and exceeds the projection of the beam shoulder.

[0009] In one embodiment, the beam shoulder further includes at least one reinforcing plate, one end of the reinforcing plate is connected to the beam shoulder body, and the other end of the reinforcing plate is connected to the top surface of the bottom plate.

[0010] In one embodiment, opposite side surfaces of the beam shoulder body along the second direction are flush with opposite side surfaces of the crossbeam body along the second direction, opposite ends of the bottom plate along the second direction extend beyond the beam shoulder, the first direction intersects the second direction, and both the first direction and the second direction are perpendicular to the height direction;

[0011] The number of the reinforcing plates is at least two, and the at least two reinforcing plates are respectively arranged on two opposite sides of the beam shoulder along the second direction.

[0012] In one embodiment, at least a portion of the reinforcing plates has hanging holes, and the hanging holes penetrate the reinforcing plates along the thickness direction of the reinforcing plates.

[0013] In one embodiment, the beam shoulder further includes a first reinforcing rib, and two ends of the first reinforcing rib are respectively connected to the reinforcing plate and the beam shoulder.

[0014] In one embodiment, the beam shoulder further includes a second reinforcing rib, and two ends of the second reinforcing rib are respectively connected to the reinforcing plate and the bottom plate.

[0015] In one embodiment, at least one cavity is formed inside the crossbeam, and the cavity forms an opening on at least one side surface of the beam shoulder.

[0016] In one embodiment, the crossbeam further includes at least one guide member, which is disposed on the crossbeam body and extends along the first direction, and the guide member is used for sliding cooperation with the cutting head.

[0017] In one embodiment, the crossbeam includes at least two limit blocks, which are respectively arranged on opposite sides of the guide member along the first direction.

[0018] In one embodiment, the crossbeam further includes a movable connecting member disposed on the base plate, and the movable connecting member is used to movably connect the crossbeam body to the sliding bridge of the laser cutting machine.

[0019] On the other hand, an embodiment of the present application hopes to provide a laser cutting machine, comprising the beam, cutting head and sliding bridge described in any one of the above embodiments, wherein the beam is mounted on the sliding bridge through the beam shoulder, and the cutting head is mounted on the beam.

[0020] The crossbeam and laser cutting machine provided in the embodiments of the present application utilize beam shoulders on both sides of the crossbeam body, each with a bottom surface higher than the main body of the crossbeam. This achieves a center of gravity design that lowers the center of gravity of the entire crossbeam and maintains it at the same height as the center of gravity of the sliding bridge of the laser cutting machine, thereby improving the stability of the crossbeam during movement. The laser cutting machine provided in the embodiments of the present application, due to the use of the above-mentioned crossbeam, has corresponding beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of a beam according to an embodiment of the present application;

[0022] Figure 2 This is a schematic diagram of the back side of a beam according to an embodiment of the present application;

[0023] Figure 3 This is a left side view of a beam according to an embodiment of the present application;

[0024] Figure 4 A right side view of a beam according to an embodiment of the present application;

[0025] Figure 5 A front view of a beam according to an embodiment of the present application;

[0026] Figure 6 A top view of a beam according to an embodiment of the present application;

[0027] Figure 7 A bottom view of a beam according to an embodiment of the present application;

[0028] Figure 8 This is a partial schematic diagram of a beam according to an embodiment of the present application;

[0029] Figure 9 This is a partial schematic diagram of the bottom surface of a beam according to an embodiment of the present application;

[0030] Figure 10 FIG. 1 is a schematic diagram of a laser cutting machine according to an embodiment of the present application.

[0031] Description of Reference Numerals

[0032] Crossbeam 10; crossbeam body 11; beam shoulder 12; beam shoulder body 121; bottom plate 122; reinforcement plate 123; lifting hole 123a; first reinforcement rib 124; second reinforcement rib 125; cavity 12a; opening 12b; guide member 13; transverse rack 131; transverse slide rail 132; limit block 14; movable connecting member 15; slide groove 151; gear 152; cutting head 20; sliding bridge 30; transverse motor 40. DETAILED DESCRIPTION

[0033] It should be noted that, unless there is a conflict, the embodiments and technical features in the embodiments of this application can be combined with each other, and the detailed description in the specific implementation methods should be understood as an explanation of this application and should not be regarded as an improper restriction on this application.

[0034] The directional terms in the description of this application are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting this application.

[0035] In the description of this application, the orientation or position relationship of "first direction", "second direction" and "height direction" is based on Figure 1 、 Figure 2 or Figure 10 The orientation or positional relationship shown in the accompanying drawings, where the "first direction" is the direction indicated by the arrow X in the accompanying drawings, the "second direction" is the direction indicated by the arrow Y in the accompanying drawings, and the "height direction" is the direction indicated by the arrow Z in the accompanying drawings. It should be understood that these orientation terms are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be understood as limiting this application. In the description of this application, the terms "first" and "second" are only used to distinguish the description and should not be understood to indicate or imply relative importance.

[0036] A laser cutting machine is equipped with a cutting head that emits a high-energy laser beam, causing the workpiece to reach its melting or boiling point. Simultaneously, high-pressure gas coaxial with the beam blows away the molten or vaporized metal. As the beam and the workpiece move relative to each other, a slit is eventually formed in the material, achieving the desired cutting effect. Therefore, in order to process three-dimensional workpieces, the laser cutting machine must ensure that the cutting head has sufficient mobility.

[0037] Generally speaking, a laser cutting machine is equipped with a sliding bridge and a crossbeam. The crossbeam can move relative to the sliding bridge, and the cutting head is placed on the crossbeam to improve its mobility. However, since the cutting head needs to be equipped with a variety of optical components, power cables, and movable mechanical parts, it is relatively heavy. The crossbeam not only needs to support the weight of the cutting head and its accessories, but also needs to ensure stability during movement. Its material strength must be guaranteed, so the crossbeam is also heavy. In the existing technology, the crossbeam is directly connected to the sliding bridge on both sides of the laser cutting machine, with a high center of gravity, making it difficult to ensure stability during the movement of the crossbeam.

[0038] In view of this, refer to Figure 1 and Figure 5 In a first aspect of an embodiment of the present application, a crossbeam 10 is provided, comprising a crossbeam body 11 and two beam shoulders 12. The crossbeam body 11 extends along a first direction intersecting the height direction; the two beam shoulders 12 are connected to opposite ends of the crossbeam body 11 along the first direction, with the top surfaces of the beam shoulders 12 flush with the top surface of the crossbeam body 11 and the bottom surfaces of the beam shoulders 12 being higher than the bottom surface of the crossbeam body 11.

[0039] So, refer to Figure 5 and Figure 10By designing the bottom surface of the beam shoulder 12 to be higher than the bottom surface of the beam body 11, the bottom surface of the beam 10 forms a downward "convex" step. Since the weight of the beam 10 is mainly concentrated on the beam body 11, the beam shoulder 12 is overlapped on the sliding bridge 30 of the laser cutting machine, which lowers the center of gravity of the beam 10 and keeps the center of gravity of the beam 10 at the same height as the center of gravity of the sliding bridge 30 of the laser cutting machine as much as possible, improving the stability of the entire beam 10 moving on the sliding bridge 30.

[0040] For example, the crossbeam body 11 and the beam shoulder 12 can be an integrally formed frame to simplify the processing of the crossbeam 10 and to provide a more stable connection between the crossbeam body 11 and the beam shoulder 12. Alternatively, the beam shoulder 12 can be detachably mounted on the crossbeam body 11, making the installation and removal of the crossbeam 10 more convenient. In this example, the beam shoulder 12 and the crossbeam 10 can be connected and fixed by means of a snap connection or a bolt connection.

[0041] In one embodiment, referring to Figure 1 、 Figure 6 and Figure 7 The beam shoulder 12 includes a beam shoulder body 121 and a bottom plate 122 arranged on the bottom side of the beam shoulder body 121. In the projection plane perpendicular to the height direction, the projection of the bottom plate 122 covers and exceeds the projection of the beam shoulder 12.

[0042] It is understandable that the present application does not limit the shape of the bottom plate 122 itself. Figure 6 and Figure 7 The projection of the bottom plate 122 in the direction perpendicular to the height can be rectangular, with one end of the bottom plate 122 along the length direction extending beyond the beam shoulder body 121 in the first direction and / or the second direction, where the second direction intersects the first direction and is perpendicular to the height direction. Alternatively, the bottom plate 122 can include a main body of the bottom plate 122 and an extension arm disposed on one side of the main body of the bottom plate 122. The projection of the main body of the bottom plate 122 in the direction perpendicular to the height coincides with the projection of the beam shoulder body 121. The extension arm is connected to the main body of the bottom plate 122 and extends beyond the beam shoulder body 121 in the first direction and / or the second direction.

[0043] So, combined Figure 10 The bottom plate 122 increases the contact area between the cross beam 10 and the sliding bridge 30 , making the connection between the cross beam 10 and the sliding bridge 30 more stable.

[0044] Further, combined with Figure 1 、 Figure 8 and Figure 10The portion of the base plate 122 that extends beyond the beam shoulder body 121 provides mounting space for auxiliary components of the laser cutting machine, such as the traverse motor 40. The traverse motor 40 is capable of driving the cutting head 20 to move along the beam 10 in a first direction. Mounting the traverse motor 40 on the base plate 122 allows the traverse motor 40 to move synchronously with the beam 10, effectively reducing the length of the cable required between the motor and the cutting head 20.

[0045] In one embodiment, referring to Figures 1 to 4 The beam shoulder 12 further includes at least one reinforcing plate 123 , one end of the reinforcing plate 123 is connected to the beam shoulder body 121 , and the other end is connected to the top surface of the bottom plate 122 .

[0046] Exemplarily, the reinforcing plate 123 is a right-angled triangular plate, wherein two right-angled sides are respectively connected to the beam shoulder body 121 and the bottom plate 122. Alternatively, the reinforcing plate 123 is a fan-shaped plate, wherein two radius sides are respectively connected to the beam shoulder body 121 and the bottom plate 122.

[0047] In this way, the reinforcing plate 123 can strengthen the structural strength between the bottom plate 122 and the beam shoulder body 121, on the one hand making the connection between the bottom plate 122 and the beam shoulder body 121 more stable, and on the other hand reducing the possibility of deformation of the bottom plate 122 and the beam shoulder body 121 under external force.

[0048] In one embodiment, the reinforcing plate 123 can be made of the same material as the beam shoulder body 121 and the bottom plate 122 to reduce the possibility of electrochemical corrosion between them. Of course, the reinforcing plate 123 can be made of a different material than the beam shoulder body 121 and the bottom plate 122. The reinforcing plate 123 can be connected to the beam shoulder body 121 and / or the bottom plate 122 by welding, or it can be integrally cast with the beam shoulder body 121 and / or the bottom plate 122.

[0049] In one embodiment, referring to Figure 1 and Figure 2 The opposite side surfaces of the beam shoulder body 121 along the second direction are respectively flush with the opposite side surfaces of the beam body 11 along the second direction, the opposite ends of the bottom plate 122 along the second direction both exceed the beam shoulder 12, the first direction intersects with the second direction, and the first direction and the second direction are both perpendicular to the height direction; the number of the reinforcing plates 123 is at least two, and the at least two reinforcing plates 123 are respectively arranged on the opposite sides of the beam shoulder 12 along the second direction.

[0050] So, refer to Figure 1 and Figure 8The portions of the bottom plate 122 that extend beyond the beam shoulder 12 at opposite ends along the second direction provide space for mounting components such as the laser cutting machine's traverse motor 40 or laser reflector. These components, therefore, do not extend beyond the edge of the beam shoulder 12 in the first direction, thus reducing potential motion interference during the movement of the beam 10. The reinforcing plates 123 further enhance the strength of the bottom plate 122 and the beam shoulder body 121, ensuring that the strength of the beam 10 can accommodate the heavier laser cutting machine accessories.

[0051] In one embodiment, at least a portion of the reinforcing plate 123 has a hanging hole 123 a , and the hanging hole 123 a passes through the reinforcing plate 123 along the thickness direction of the reinforcing plate 123 .

[0052] For example, referring to Figure 1 and Figure 10 There are two lifting holes 123a, which are set on the two reinforcing plates 123 of the two beam shoulders 12. When installing the beam 10, two lifting devices are used at the same time, and the two lifting holes 123a are hooked with hooks respectively to lift the beam 10 and move it to the sliding bridge 30.

[0053] In this way, the hoisting hole 123 a cooperates with the lifting hook to realize the suspension installation of the beam 10 .

[0054] In one embodiment, combining Figure 1 and Figure 8 The beam shoulder 12 further includes a first reinforcing rib 124, the two ends of which are respectively connected to the reinforcing plate 123 and the beam shoulder 12. And / or the beam shoulder 12 further includes a second reinforcing rib 125, the two ends of which are respectively connected to the reinforcing plate 123 and the bottom plate 122.

[0055] Exemplarily, the first reinforcing rib 124 and / or the second reinforcing rib 125 are right-angled triangular plate members, wherein two right-angled sides are respectively connected to the beam shoulder 12 and the reinforcing plate 123. Alternatively, the first reinforcing rib 124 and / or the second reinforcing rib 125 are fan-shaped plate members, wherein two radial sides are respectively connected to the beam shoulder 12 and the reinforcing plate 123.

[0056] In this way, the first reinforcing ribs 124 and / or the second reinforcing ribs 125 improve the connection stability between the beam shoulder 12 and the reinforcing plate 123 , and reduce the possibility of deformation of the beam shoulder 12 and the reinforcing plate 123 under external force.

[0057] Furthermore, the first reinforcing rib 124 and / or the second reinforcing rib 125 may be connected to the beam shoulder 12 and the reinforcing plate 123 respectively by welding, or may be integrally cast with the beam shoulder 12 and the reinforcing plate 123 .

[0058] In one embodiment, referring to Figure 3 、 Figure 4 and Figure 10 At least one cavity 12 a is formed inside the beam shoulder body 121 and / or the crossbeam body 11 , and the cavity 12 a forms an opening 12 b on at least one side surface of the beam shoulder 12 .

[0059] For example, cavity 12a is formed by hollowing out the interior of beam 10; alternatively, cavity 12a is enclosed by the outer frame of beam 10. A cable for a laser cutting machine can extend through an opening 12b formed on one side of cavity 12a to connect with cutting head 20, or extend through an opening 12b formed on the other side of beam shoulder 12 to connect with other auxiliary components.

[0060] It can be understood that in order to facilitate the extension of the cable from the cavity 12a inside the beam body 11 to connect with the cutting head 20, a long strip opening (not shown in the figure) is also formed on the beam body 11.

[0061] Thus, the cavity 12a provides space for the arrangement of the cables or laser channels of the cutting head 20. At the same time, the cavity 12a and the opening 12b further reduce the weight of the beam 10.

[0062] In one embodiment, referring to Figure 1 、 Figure 5 and Figure 10 The beam 10 further includes at least one guide member 13 , which is disposed on the beam body 11 and extends along the first direction. The guide member 13 is configured to slide with the cutting head 20 .

[0063] Exemplarily, the cutting head 20 includes a transverse gear (not shown in the figure), which is connected to the transverse motor 40, and the guide member 13 includes a transverse rack 131, which engages with the transverse gear of the cutting head 20, so that when the transverse motor 40 drives the transverse gear of the cutting head 20, the cutting head 20 can move along the guide member 13 in the first direction; in another embodiment, the guide member 13 also includes a transverse slide rail 132, which cooperates with the slider of the cutting head 20 to provide a guide for the movement of the cutting head 20 in the first direction.

[0064] For example, referring to Figure 1 As shown, the guide member 13 is disposed on one side of the crossbeam body 11 along the second direction and includes two transverse slide rails 132 and a transverse rack 131. The two transverse slide rails 132 are flush with the top and bottom surfaces of the crossbeam body 11, respectively, and the transverse rack 131 is disposed between the two transverse slide rails 132. The two transverse slide rails 132 and the transverse rack 131 are parallel to each other and extend along the first direction.

[0065] In this way, the guide member 13 enables the cutting head 20 to move relative to the crossbeam 10 in the first direction, increases the range of motion of the cutting head 20, and can also serve as a guide for such movement.

[0066] In one embodiment, referring to Figure 1 and Figure 5 The crossbeam 10 includes at least two limit blocks 14, which are respectively arranged on opposite sides of the guide member 13 along the first direction.

[0067] For example, the limiting block 14 is a rubber block or an elastic sponge block. Figure 1 As shown, the limit blocks 14 are respectively provided on both sides of the crossbeam body 11 near the two beam shoulders 12 and are provided on the same surface as the guide member 13. In this way, when the cutting head 20 moves to the ends of the guide member 13, the limit blocks 14 can prevent the cutting head 20 from moving beyond the limit, thereby ensuring the safe operation of the laser cutting machine.

[0068] In one embodiment, referring to Figure 9 The crossbeam 10 further includes a movable connecting member 15, which is disposed on the bottom plate 122. The movable connecting member 15 is used to movably connect the crossbeam body 11 to the sliding bridge of the laser cutting machine, so that the crossbeam body 11 can move relative to the sliding bridge.

[0069] In one embodiment, the movable connecting member 15 includes a slide groove 151. A slide rail can be set on the sliding bridge of the laser cutting machine. The slide groove 151 is used to slide with the slide rail, so that the movement resistance of the beam 10 along the extension direction of the slide rail is smaller.

[0070] Exemplarily, the slide groove 151 is provided on the bottom surface of the base plate 122 , and the number of the slide grooves 151 is at least two, and at least two slide grooves 151 are distributed along the extension direction of the slide rail of the sliding bridge to play a better guiding role.

[0071] In one embodiment, referring to Figure 9 and Figure 10 The movable connecting member 15 includes a driving gear 152 for connecting to a driving motor (not shown) of the sliding bridge to realize the movement of the beam 10 on the sliding bridge, further increasing the range of motion of the cutting head 20.

[0072] Another aspect of the present invention is to provide a laser cutting machine. Figure 10 , including the beam 10, cutting head 20 and sliding bridge 30 of any one of the above embodiments, the beam 10 is installed on the sliding bridge 30 through the beam shoulder 12, and the cutting head 20 is installed on the beam 10.

[0073] For example, there are two sliding bridges 30, which are respectively connected to the two beam shoulders 12. The sliding bridge 30 includes a track (not shown in the figure), and the crossbeam 10 can move relative to the sliding bridge 30 along the extension direction of the track.

[0074] In one embodiment, the laser cutting machine also includes a drive motor (not shown in the figure) and / or a transverse motor 40. The longitudinal motor can drive the beam 10 to move along the extension direction of the sliding bridge 30, and the transverse motor can drive the cutting head to move on the beam 10 along the first direction.

[0075] The various embodiments / implementations provided in this application can be combined with each other without causing any contradiction.

[0076] The foregoing description is merely a preferred embodiment of the present application and is not intended to limit the present application. Persons skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A beam used in a laser cutting machine, characterized in that: include: A crossbeam body extends along a first direction, the first direction intersecting with the height direction, and the crossbeam body is used to support a cutting head of a laser cutting machine; Two beam shoulders are respectively connected to opposite ends of the beam body along the first direction, the top surfaces of the beam shoulders are respectively flush with the top surface of the beam body, and the bottom surfaces of the beam shoulders are higher than the bottom surface of the beam body.

2. The crossbeam according to claim 1, characterized in that The beam shoulder includes a beam shoulder body and a bottom plate arranged on the bottom side of the beam shoulder body. In a projection plane perpendicular to the height direction, the projection of the bottom plate covers and exceeds the projection of the beam shoulder.

3. The crossbeam according to claim 2, characterized in that The beam shoulder further includes at least one reinforcing plate, one end of the reinforcing plate is connected to the beam shoulder body, and the other end is connected to the top surface of the bottom plate.

4. The crossbeam according to claim 3, characterized in that The opposite side surfaces of the beam shoulder body along the second direction are flush with the opposite side surfaces of the crossbeam body along the second direction, and the opposite ends of the bottom plate along the second direction extend beyond the beam shoulder. The first direction intersects the second direction, and both the first direction and the second direction are perpendicular to the height direction. The number of the reinforcing plates is at least two, and the at least two reinforcing plates are respectively arranged on two opposite sides of the beam shoulder along the second direction.

5. The crossbeam according to claim 3, characterized in that At least part of the reinforcing plates has hanging holes, and the hanging holes penetrate the reinforcing plates along the thickness direction of the reinforcing plates.

6. The crossbeam according to claim 3, characterized in that The beam shoulder further includes a first reinforcing rib, the two ends of which are respectively connected to the reinforcing plate and the beam shoulder; and / or the beam shoulder further includes a second reinforcing rib, the two ends of which are respectively connected to the reinforcing plate and the bottom plate.

7. The crossbeam according to claim 1, characterized in that At least one cavity is formed inside the beam shoulder body and / or the cross beam body, and the cavity forms an opening on at least one side surface of the beam shoulder.

8. The crossbeam according to claim 1, characterized in that The crossbeam further comprises at least one guide member, which is arranged on the crossbeam body and extends along the first direction, and the guide member is used for sliding cooperation with the cutting head.

9. The crossbeam according to claim 8, characterized in that The crossbeam includes at least two limit blocks, which are respectively arranged on two opposite sides of the guide member along the first direction.

10. The crossbeam according to claim 2, characterized in that The crossbeam further comprises a movable connecting member, which is arranged on the base plate, and the movable connecting member is used to movably connect the crossbeam body with the sliding bridge of the laser cutting machine.

11. A laser cutting machine, characterized in that: The invention comprises the crossbeam, cutting head and sliding bridge according to any one of claims 1 to 10, wherein the crossbeam is installed on the sliding bridge through the beam shoulder, and the cutting head is installed on the crossbeam.

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