Distance-adjustable zoom laser cutting head and laser cutting machine thereof

Abstract

The present invention provides a distance-adjustable zoom laser cutting head and a laser cutting machine thereof, belonging to the technical field of laser cutting machines, comprising a laser cutting head device, wherein the laser cutting head device comprises a rotator, and a swing arm is horizontally arranged at the lower end of the rotator, and a distance-adjusting component is movably sleeved in the cavity at the lower end of the swing arm, a positioning component is through-sleeved at the upper left end of the swing arm, and the lower end of the positioning component is movably nested with the left top surface of the distance-adjusting component for positioning, and a laser cutting head mechanism is vertically arranged on the bottom surface of the distance-adjusting component. The zoom laser cutting head can simplify the digital programming numerical control movement of the first sliding group and the second sliding group of the laser cutting machine when cutting a circular column or a circular hole by simply adjusting the radius of the circle. The array distribution of the material when laser cutting a circle can be realized by simply setting the horizontal or vertical spacing movement of a circle diameter of the first sliding group and the second sliding group.

Description

Technical Field

[0001] The invention relates to a distance-adjustable zoom laser cutting head and a laser cutting machine thereof, belonging to the technical field of laser cutting machines. Background Art

[0002] Laser cutting uses a focused high-power density laser beam to irradiate the workpiece, causing the irradiated material to melt, vaporize, ablate or reach ignition point rapidly, while using a high-speed airflow coaxial with the beam to blow away the molten material, thereby achieving the cutting of the workpiece.

[0003] The cutting head of the laser cutting machine is simply fixed on the horizontal sliding group, so the movement of the cutting head is completely realized by digital programming, and the cutting head of the existing optical cutting machine is often used for laser cutting of circular columns or circular holes. The movement of circular columns or circular holes of different diameters according to digital programming requires a lot of time and effort, and when chamfering circular columns and circular holes or processing conical columns, circular upper holes and circular lower holes, the cutting head needs to have a steering function, and the movement of the cutting head with an angle completely relying on digital programming is more difficult, and very professional staff are required to design the movement through digital programming. In view of the above shortcomings, the present invention proposes a distance-adjustable zoom laser cutting head and a laser cutting machine thereof. Summary of the invention

[0004] In view of the deficiencies in the prior art, the object of the present invention is to provide a distance-adjustable zoom laser cutting head and a laser cutting machine thereof to solve the existing problems.

[0005] In order to achieve the above-mentioned object, the present invention is realized by the following technical scheme: a distance-adjustable zoom laser cutting head, comprising a laser cutting head device, the laser cutting head device comprising a rotator, and a swing arm is horizontally arranged at the lower end of the rotator, and a distance-adjusting component is movably sleeved in the cavity at the lower end of the swing arm, a positioning component is sleeved through the upper left end of the swing arm, the lower end of the positioning component is movably nested with the left top surface of the distance-adjusting component for positioning, and a laser cutting head mechanism is vertically arranged on the bottom surface of the distance-adjusting component;

[0006] The laser cutting head mechanism comprises a cutting head adjustment frame, and an angle adjustment disk is arranged in the middle of the cavity of the cutting head adjustment frame, and a screw adjustment member and a supporting telescopic assembly are movably sleeved and abutted against each other on the left and right sides of the angle adjustment disk, the right end of the screw adjustment member is transversely threadedly connected to the right side surface of the cutting head adjustment frame, and the left end of the supporting telescopic assembly transversely penetrates the left side surface of the cutting head adjustment frame, a scale is arranged above the angle adjustment disk, a cutting head assembly is vertically arranged at the lower end of the angle adjustment disk, and a scale pointer is vertically arranged at the upper end of the front side of the angle adjustment disk, and the upper end of the scale pointer points to the scale;

[0007] When the screw adjustment piece rotates the thread to push and pull the angle adjustment disk left and right, it will drive the zoom laser cutting head body on the cutting head assembly to swing left and right to adjust the angle, and the swing angle is -35 degrees to 35 degrees.

[0008] A further improvement is that the swing arm member includes a swing arm body, and an adjustment component slide groove is opened on the bottom surface of the swing arm body, and a positioning component opening is opened through the top surface on the left side of the adjustment component slide groove, and a size chart is horizontally arranged on the upper end of the front side surface of the swing arm body.

[0009] A further improvement is that the distance adjustment component includes a first threaded rod, and a slider is threadedly connected to the first threaded rod, and a plurality of positioning teeth are equidistantly arranged on the left side of the first threaded rod in a circular array, and a distance adjustment pointer is vertically arranged in the middle of the front side of the slider, and the upper end of the distance adjustment pointer points to the size chart.

[0010] A further improvement is that the positioning assembly includes a fixed plate, and a lifting rod is vertically movably sleeved in the middle of the fixed plate, and a first spring is sleeved at the lower end of the lifting rod body, a clamping piece is provided at the lower end of the lifting rod, a lifting handle is laterally movably inserted into the upper end of the lifting rod, and a lifting handle seat for temporarily hanging the lifting handle is provided on the right side of the lifting handle, the lower end of the clamping piece is movably nested in one of the multiple positioning teeth to clamp the first threaded rod, and the cross-section of the upper end of the lifting rod body is hexagonal.

[0011] As a further improvement, the angle adjustment disk comprises an annular disk, and a plurality of arc-shaped adjustment slideways are symmetrically provided on the left and right sides of the annular disk, and a mounting sleeve is provided on the upper end of each arc-shaped adjustment slideway.

[0012] A further improvement is that the screw adjustment member includes a second threaded rod, and a rotating seat is provided at the tail of the left end of the second threaded rod, and a first ball slide group is provided on the left side of the rotating seat, the first ball slide group includes a main ball seat, and two outer ball seats are oppositely arranged on the front and rear sides of the main ball seat, the left end face of the main ball seat is movably offset against the inner side face of the arc-shaped adjustment slide, and the left end faces of the two outer ball seats are respectively movably offset against the front and rear ends of the outer side face of the arc-shaped adjustment slide.

[0013] A further improvement is that the supporting telescopic assembly includes a supporting telescopic rod, and a second ball slide group is provided at the right end of the supporting telescopic rod, and a second spring and a third spring are respectively provided at the left and right ends of the supporting telescopic rod body, the cross-section of the supporting telescopic rod body is hexagonal, and the second ball slide group has the same structure as the first ball slide group.

[0014] A further improvement is that the cutting head assembly includes a cutting head bracket, and a universal seat is sleeved in the middle of the lower end of the cutting head bracket cavity, and a zoom laser cutting head body is vertically sleeved on the universal seat, a stabilizing swing rod is vertically arranged on the top surface of the zoom laser cutting head body, and a swing rod drag block is arranged in the middle of the stabilizing swing rod, and a stabilizing slide is horizontally sleeved on the swing rod drag block, and an arc slide for the swing rod drag block to move left and right is opened on the stabilizing slide, and the distance adjustment pointer is vertically aligned with the beam head at the lower end of the zoom laser cutting head body;

[0015] When the zoom laser cutting head body is based on the universal seat, every time it swings 1 degree horizontally, the slider on the distance adjustment component needs to move and adjust the spacing of 0.1-0.12mm for calibration compensation.

[0016] As a further improvement, the size numbers in the size chart are from -1 cm to 40 cm, and the minimum size number is 0.5 mm.

[0017] A further improvement is that the zoom laser cutting head body is prior art, and the structure is not described in detail here.

[0018] A laser cutting machine also includes a cutting frame, and a first sliding group is longitudinally arranged on the top surface of the cutting frame, a second sliding group is transversely arranged on the front upper end of the first sliding group, the laser cutting head device is arranged on the bottom surface of the moving end of the second sliding group, and a control box is arranged on the right end of the cutting frame. The first sliding group, the second sliding group, the laser cutting head device and the control box are electrically connected. The first sliding group is composed of two longitudinal rails, two first sliders and a transverse frame, and the second sliding group is composed of a transverse rail and a second slider.

[0019] A further improvement is that a lifting platform is provided in the middle of the top surface of the cutting frame.

[0020] The beneficial effects of the invention are:

[0021] The present invention provides a distance-adjustable zoom laser cutting head and a laser cutting machine thereof. A distance-adjustable zoom laser cutting head is formed by a combined design of a rotator, a swing arm, a distance-adjustable assembly, a positioning assembly, and a laser cutting head mechanism. The zoom laser cutting head can simplify the digital programming numerical control movement of the first sliding group and the second sliding group of the laser cutting machine when cutting a circular column or a circular hole by simply adjusting the radius of the circle. The array distribution of the material when laser cutting a circle can be achieved by simply setting the horizontal or vertical spacing movement of the first sliding group and the second sliding group of a circle diameter.

[0022] The combined design of the cutting head adjustment frame, angle adjustment disk, screw adjustment piece, support telescopic assembly, scale, cutting head assembly, and scale pointer allows the cutting angle of the zoom laser cutting head body to be adjusted by swinging with the lower end of the zoom laser cutting head body as the base point. With this design, after the zoom laser cutting head body swings, the displacement distance between the light beam end and the distance adjustment pointer is small, and it is easier to perform calibration compensation adjustment after the vertical alignment displacement between the light beam end and the distance adjustment pointer. In addition, the zoom laser cutting head body on the laser cutting head mechanism is based on the universal seat, and the middle part is midpointed by a stable slide seat and a rocker block. The left and right end points are laterally tightened at the top through the screw adjustment piece and the support telescopic assembly through the angle adjustment disk. By adopting a multi-point combination, the oblique angle of the zoom laser cutting head body is adjusted. When in use, the stability is high, and the angle will not change automatically. Through the above, it is easy and quick to adjust the chamfering of circular columns and circular holes or the processing of conical columns, circular upper reaming, and circular lower reaming, which saves time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of the laser cutting head device of the present invention;

[0024] Figure 2 It is a schematic diagram of the structure of the swing arm member and the distance adjustment assembly of the present invention;

[0025] Figure 3 This is a schematic diagram of the positioning assembly structure of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of the laser cutting head of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of the angle adjustment disk of the present invention;

[0028] Figure 6 This is a schematic diagram of the structure of the screw adjustment member and the support telescopic assembly of the present invention;

[0029] Figure 7 This is a schematic diagram of the structure of the cutting head assembly of the present invention;

[0030] Figure 8 It is a schematic diagram of the installation of the arc-shaped adjustment slideway and the first ball bearing slide assembly of the present invention;

[0031] Fig. 9 The figure is a schematic diagram of the structure of a laser cutting machine of the present invention. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0033] See also Figure 1-Figure 9The present invention provides a distance-adjustable zoom laser cutting head and a schematic diagram of a laser cutting machine thereof. The laser cutting head device 4 includes a rotator 41, and a swing arm 42 is horizontally arranged at the lower end of the rotator 41, and a distance-adjusting component 43 is movably sleeved in the cavity at the lower end of the swing arm 42, and a positioning component 44 is sleeved through the upper left end of the swing arm 42, and the lower end of the positioning component 44 is movably nested with the left top surface of the distance-adjusting component 43 for positioning, and a laser cutting head mechanism 45 is vertically arranged on the bottom surface of the distance-adjusting component 43;

[0034] The laser cutting head mechanism 45 includes a cutting head adjustment frame 451, and an angle adjustment disk 452 is arranged in the middle of the cavity of the cutting head adjustment frame 451, and the left and right sides of the angle adjustment disk 452 are movably sleeved with screw adjustment members 453 and support telescopic components 454, the right end of the screw adjustment member 453 is transversely threadedly connected to the right side of the cutting head adjustment frame 451, and the left end of the support telescopic component 454 transversely penetrates the left side of the cutting head adjustment frame 451, a scale 455 is arranged above the angle adjustment disk 452, a cutting head component 456 is vertically arranged at the lower end of the angle adjustment disk 452, and a scale pointer 457 is vertically arranged at the upper front end of the angle adjustment disk 452, and the upper end of the scale pointer 457 points to the scale 455;

[0035] When the screw adjusting member 453 rotates to push and pull the angle adjusting disk 452 left and right, it will drive the zoom laser cutting head body on the cutting head assembly 456 to swing left and right to adjust the angle, and the swing angle is -35 degrees to 35 degrees.

[0036] The swing arm member 42 includes a swing arm body 421 , and an adjustment component slot 422 is provided on the bottom surface of the swing arm body 421 , and a positioning component opening 423 is provided through the top surface of the left side of the adjustment component slot 422 , and a size chart 424 is transversely arranged on the upper end of the front side surface of the swing arm body 421 .

[0037] The distance adjustment component 43 includes a first threaded rod 431, and a slider 432 is threadedly connected to the first threaded rod 431, and a plurality of positioning teeth 433 are equidistantly arranged on the left side of the first threaded rod 431 in a circular array, and a distance adjustment pointer 434 is vertically arranged in the middle of the front side of the slider 432, and the upper end of the distance adjustment pointer 434 points to the size chart 424.

[0038] The positioning assembly 44 includes a fixed plate 441, and a lifting rod 442 is vertically movably sleeved in the middle of the fixed plate 441, and a first spring 443 is sleeved on the lower end of the lifting rod 442. A clamping piece 444 is provided at the lower end of the lifting rod 442. A lifting handle 445 is laterally movably inserted into the upper end of the lifting rod 442, and a lifting handle seat 446 for temporarily hanging the lifting handle 445 is provided on the right side of the lifting handle 445. The lower end of the clamping piece 444 is movably nested in one of the multiple positioning teeth 433 to clamp the first threaded rod 431. The cross-section of the upper end of the lifting rod 442 is hexagonal.

[0039] The angle adjustment disk 452 includes an annular disk 4521 , and a plurality of arc-shaped adjustment slideways 4522 are symmetrically provided on the left and right sides of the annular disk 4521 , and a mounting opening 4523 is provided at the upper end of each arc-shaped adjustment slideway 4522 .

[0040] The screw adjustment member 453 includes a second threaded rod 4531, and a rotating seat 4532 is arranged at the tail of the left end of the second threaded rod 4531, and a first ball slide group 4533 is arranged on the left side of the rotating seat 4532, the first ball slide group 4533 includes a main ball seat 45331, and two outer ball seats 45332 are arranged in opposite directions on the front and rear sides of the main ball seat 45331, the left end face of the main ball seat 45331 is movably opposed to the inner side face of the arc-shaped adjustment slide 4522, and the left end faces of the two outer ball seats 45332 are respectively movably opposed to the front and rear ends of the outer side face of the arc-shaped adjustment slide 4522.

[0041] The supporting telescopic assembly 454 includes a supporting telescopic rod 4541, and a second ball slide group 4542 is arranged at the right end of the supporting telescopic rod 4541, and a second spring 4543 and a third spring 4544 are respectively sleeved on the left and right ends of the supporting telescopic rod 4541, and the cross-section of the supporting telescopic rod 4541 is hexagonal, and the second ball slide group 4542 has the same structure as the first ball slide group 4533.

[0042] The cutting head assembly 456 comprises a cutting head bracket 4561, and a universal seat 4562 is sleeved in the middle of the lower end of the cavity of the cutting head bracket 4561, and a zoom laser cutting head body 4563 is vertically sleeved on the universal seat 4562, a stabilizing swing rod 4564 is vertically arranged on the top surface of the zoom laser cutting head body 4563, and a swing rod drag block 4565 is arranged in the middle of the stabilizing swing rod 4564, and a stabilizing slide 4566 is horizontally sleeved on the swing rod drag block 4565, and an arc-shaped slide 4567 for the swing rod drag block 4565 to move left and right is opened on the stabilizing slide 4566, and the distance adjustment pointer 434 is vertically aligned with the beam head at the lower end of the zoom laser cutting head body 4563;

[0043] When the zoom laser cutting head body 4563 is based on the universal seat 4562, every time it swings horizontally by 1 degree, the slider 432 on the distance adjustment component 43 needs to move and adjust the spacing by 0.1-0.12mm for calibration compensation.

[0044] It also includes a cutting frame 1, and a first sliding group 2 is longitudinally arranged on the top surface of the cutting frame 1, a second sliding group 3 is transversely arranged on the upper front end of the first sliding group 2, the laser cutting head device 4 is arranged on the bottom surface of the moving end of the second sliding group 3, and a control box 5 is arranged on the right end of the cutting frame 1. The first sliding group 2, the second sliding group 3, the laser cutting head device 4 and the control box 5 are electrically connected. The first sliding group 2 is composed of two longitudinal rails 21, two first sliders 22 and a cross frame 23, and the second sliding group 3 is composed of a cross rail 31 and a second slider 32.

[0045] Working principle:

[0046] First, when a circular column or circular hole is to be laser cut, the first threaded rod 431 on the distance adjustment component 43 is rotated to pull the slider 432 to the laser cutting head mechanism 45 to move horizontally to the left from the midpoint a1 of the rotating end of the rotator 41, and the distance adjustment pointer 434 is compared with the value of the size chart 424 to obtain the radius of the circle to be cut. During the laser cutting operation, the laser cutting head mechanism 45 is driven by the rotator 41 through the swing arm 42 to rotate one circle with a1 as the midpoint, so that the zoom laser cutting head body 4563 can cut a circular column or a circular hole according to the required diameter, and the zoom laser cutting head body The movement of 4563 can be achieved by simply setting the diameter of a circle in the longitudinal and transverse directions of the first sliding group 2 and the second sliding group 3, so that multiple circles can be cut on the material in an equidistant array. When the distance adjustment component 43 is adjusting the distance, the clamping member 444 must be disengaged from each positioning tooth opening 433 first. After the first threaded rod 431 is adjusted, the clamping member 444 is re-positioned with one of the corresponding positioning tooth openings 433. This is to prevent the swing arm member 42 from rotating when driving the laser cutting head mechanism 45 to rotate due to the transmission of the rotational force of the laser cutting head mechanism 45 to the first threaded rod 431.

[0047] In addition, when a circular column or circular hole is to be chamfered or a conical column or a circular upper reaming or a circular lower reaming is to be performed, it is necessary to adjust the oblique cutting angle of the beam end of the zoom laser cutting head body 4563. During the adjustment, the angle adjustment disk 452 is pushed and pulled to swing left and right through the lateral rotation of the screw adjustment member 453, and the beam end of the zoom laser cutting head body 4563 will swing left and right with the universal seat 4562 as the base point, and the support telescopic rod 4541 on the support telescopic assembly 454 will be stretched to the right or left, so that the second spring 4543 or the third spring 454 4 is in a taut state, and a leftward pulling force or a rightward pushing force is proposed to support the telescopic rod 4541. The swing rod drag block 4565 will also slide leftward or rightward in the arc slide 4567 accordingly. Under the support of multiple points, the angle of the zoom laser cutting head body 4563 after adjustment will not change automatically during operation. In addition, after the beam end of the zoom laser cutting head body 4563 swings obliquely, the beam end and the distance adjustment pointer 434 will be vertically aligned and displaced. At this time, it is necessary to adjust the distance adjustment component 43 to calibrate and compensate for the distance between the two after the displacement.

[0048] When the laser cutting machine performs irregular movement cutting, it still controls the movement of the first sliding group 2 and the second sliding group 3 through digital programming to drive the zoom laser cutting head body 4563 to perform movement laser cutting. It should be noted that at this time, the zoom laser cutting head body 4563 needs to be reset to be vertically aligned with a1.

[0049] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0050] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A variable-focus laser cutting head, the structure of which includes a laser cutting head device (4), characterized in that: The laser cutting head device (4) comprises a rotator (41), wherein a swing arm member (42) is transversely arranged at the lower end of the rotator (41), and a distance adjustment component (43) is movably sleeved in the cavity at the lower end of the swing arm member (42), a positioning component (44) is sleeved through the upper left end of the swing arm member (42), the lower end of the positioning component (44) is movably nested with the left top surface of the distance adjustment component (43) for locking, and a laser cutting head mechanism (45) is vertically arranged on the bottom surface of the distance adjustment component (43); The laser cutting head mechanism (45) comprises a cutting head adjustment frame (451), and an angle adjustment disk (452) is arranged in the middle of the cavity of the cutting head adjustment frame (451), and a screw adjustment member (453) and a support telescopic assembly (454) are movably sleeved and abutted against each other on the left and right sides of the angle adjustment frame (452), the right end of the screw adjustment member (453) is transversely threadedly connected to the right side surface of the cutting head adjustment frame (451), and the left end of the support telescopic assembly (454) transversely penetrates the left side surface of the cutting head adjustment frame (451), a scale (455) is arranged above the angle adjustment frame (452), a cutting head assembly (456) is vertically arranged at the lower end of the angle adjustment frame (452), and a scale pointer (457) is vertically arranged at the upper front end of the angle adjustment frame (452), and the upper end of the scale pointer (457) points to the scale meter (455); When the screw adjusting member (453) is threadedly rotated to push and pull the angle adjusting disk (452) left and right, the zoom laser cutting head body on the cutting head assembly (456) is driven to swing left and right to adjust the angle, and the swing angle is -35 degrees to 35 degrees; The distance adjustment component (43) comprises a first threaded rod (431), a slider (432) being threadedly connected to the first threaded rod (431), a plurality of positioning teeth (433) being equidistantly arranged in a circular array on the left side of the first threaded rod (431), a distance adjustment pointer (434) being vertically arranged in the middle of the front side surface of the slider (432), and an upper end of the distance adjustment pointer (434) pointing to the size chart (424); The angle adjustment disk (452) comprises an annular disk (4521), and a plurality of arc-shaped adjustment slideways (4522) are symmetrically provided on the left and right sides of the annular disk (4521), and a mounting sleeve (4523) is provided at the upper end of each arc-shaped adjustment slideway (4522); The screw adjustment member (453) comprises a second threaded rod (4531), and a rotating seat (4532) is arranged at the left end of the second threaded rod (4531), and a first ball sliding seat group (4533) is arranged on the left side of the rotating seat (4532), and the first ball sliding seat group (4533) comprises a main ball seat (45331), and two outer ball seats (45332) are arranged on the front and rear sides of the main ball seat (45331) in opposite directions, and the left end face of the main ball seat (45331) is movably abutted against the inner side face of the arc-shaped adjustment slideway (4522), and the left end faces of the two outer ball seats (45332) are movably abutted against the front and rear ends of the outer side face of the arc-shaped adjustment slideway (4522); The supporting telescopic assembly (454) comprises a supporting telescopic rod (4541), and a second ball sliding seat group (4542) is arranged at the right end of the supporting telescopic rod (4541), and a second spring (4543) and a third spring (4544) are respectively sleeved on the left and right ends of the rod body of the supporting telescopic rod (4541), and the rod body of the supporting telescopic rod (4541) has a hexagonal cross-section, and the second ball sliding seat group (4542) has the same structure as the first ball sliding seat group (4533); The cutting head assembly (456) comprises a cutting head bracket (4561), wherein a universal seat (4562) is sleeved at the middle of the lower end of the cavity of the cutting head bracket (4561), and a zoom laser cutting head body (4563) is sleeved vertically on the universal seat (4562), a stabilizing swing rod (4564) is vertically arranged on the top surface of the zoom laser cutting head body (4563), and a swing rod drag block (4565) is arranged in the middle of the stabilizing swing rod (4564), and a stabilizing slide seat (4566) is sleeved horizontally on the swing rod drag block (4565), and an arc-shaped slideway (4567) for the swing rod drag block (4565) to move left and right is provided on the stabilizing slide seat (4566), and the distance adjustment pointer (434) is vertically aligned with the beam head at the lower end of the zoom laser cutting head body (4563); When the zoom laser cutting head body (4563) is based on the universal seat (4562), every time the horizontal swing angle is 1 degree, the slider (432) on the distance adjustment component (43) needs to move and adjust the spacing of 0.1-0.12mm for calibration compensation.

2. The adjustable zoom laser cutting head according to claim 1, characterized in that: The swing arm member (42) comprises a swing arm body (421), and an adjustment component slide groove (422) is provided on the bottom surface of the swing arm body (421), and a positioning component opening (423) is provided through the top surface on the left side of the adjustment component slide groove (422), and a size chart (424) is transversely provided on the upper end of the front side surface of the swing arm body (421).

3. The adjustable zoom laser cutting head according to claim 2, characterized in that: The positioning assembly (44) comprises a fixing plate (441), and a lifting rod (442) is vertically movably sleeved in the middle of the fixing plate (441), and a first spring (443) is sleeved on the lower end of the rod body of the lifting rod (442), and a clamping member (444) is provided at the lower end of the lifting rod (442), and a lifting handle (445) is inserted and movably inserted in the upper end of the lifting rod (442), and a lifting handle seat (446) for temporarily hanging the lifting handle (445) is provided on the right side of the lifting handle (445), and the lower end of the clamping member (444) is movably nested in one of the plurality of positioning teeth (433) to clamp the first threaded rod (431), and the cross-section of the upper end of the rod body of the lifting rod (442) is hexagonal.

4. A laser cutting machine, characterized in that: The invention comprises the adjustable zoom laser cutting head as claimed in any one of claims 1 to 3, and also comprises a cutting frame (1), wherein a first sliding group (2) is longitudinally arranged on the top surface of the cutting frame (1), a second sliding group (3) is transversely arranged on the front upper end of the first sliding group (2), the laser cutting head device (4) is arranged on the bottom surface of the movable end of the second sliding group (3), a control box (5) is arranged on the right end of the cutting frame (1), the first sliding group (2), the second sliding group (3), the laser cutting head device (4) and the control box (5) are electrically connected, the first sliding group (2) is composed of two longitudinal rails (21), two first sliders (22) and a transverse frame (23), and the second sliding group (3) is composed of a transverse rail (31) and a second slider (32).

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