CN115740734A

CN115740734A - Automatic and accurate focusing machining head for ultrahigh-power laser cutting

Info

Publication number: CN115740734A
Application number: CN202211454910.8A
Authority: CN
Inventors: 蒋习锋
Original assignee: Shandong Xinguang Photoelectric Technology Co ltd; Jinan GWeike Science & Technology Co ltd
Current assignee: Shandong Xinguang Photoelectric Technology Co ltd; Jinan GWeike Science & Technology Co ltd
Priority date: 2022-11-21
Filing date: 2022-11-21
Publication date: 2023-03-07

Abstract

The invention discloses an automatic and accurate focusing machining head for ultrahigh-power laser cutting, and belongs to the field of laser machining. The automatic and accurate focusing processing head for ultrahigh-power laser cutting comprises a shell, wherein a laser incidence end surface mirror component is fixed at the top of the shell, and a collimation beam expanding lens group component is arranged in the shell and positioned below the laser incidence end surface mirror component; the mounting plate, the adjusting assembly, the power assembly, the display assembly, the dismounting assembly and the fine adjustment assembly are matched with each other, so that when the device is used, the distance between the focusing lens assembly and the collimating beam expanding lens assembly can be automatically adjusted, the adjusted numerical value is displayed on the outer wall of the shell in real time for a worker to check, the accurate control of the change of the positive defocusing amount and the negative defocusing amount of a focusing spot is realized, the cutting and processing effect of the device is improved, the processing quality of a product is ensured, the dismounting and the maintenance of the focusing lens assembly are convenient, and the device is high in use flexibility.

Description

Automatic and accurate focusing machining head for ultrahigh-power laser cutting

Technical Field

The invention relates to the technical field of laser processing, in particular to an automatic and accurate focusing processing head for ultrahigh-power laser cutting.

Background

Laser is used as an advanced cutting sharp tool, and compared with flame cutting, high-pressure water cutting and plasma cutting, the laser cutting has the characteristics of high speed, small cutting seam, good flexibility, small heat affected zone, low noise, low pollution and the like, so that the laser cutting sharp tool is widely applied to the fields of ship manufacturing, aerospace, mechanical manufacturing, petroleum and petrochemical industry, medical treatment and the like, and is more and more paid attention and developed by people.

The power density of the myriawatt-level laser emitted from the optical fiber core diameter of about 100 μm is thought to be large. Generally speaking, the route that laser conduction passed through is by optic fibre end face mirror, collimation expander set, zoom system, focusing mirror etc. are constituteed, when operating ten thousand watts laser cutting processing, according to the cutting requirement of different work pieces, in the equipment now, generally with the casing that the focusing mirror is sealed, need twist the screw and just can open, the relative distance to expander set and focusing mirror is inconvenient is adjusted, thereby realize the positive negative out-of-focus volume's of focus facula change, the cutting effect is relatively poor, the inspection maintenance is very inconvenient, and the inconvenient inner chamber to the nozzle of installation carries out regulation control, the staff need frequently change the operation, use the flexibility relatively poor.

Disclosure of Invention

The invention aims to solve the problems that in the prior art, a focusing mirror is usually sealed in a shell, a screw needs to be screwed for opening, the relative distance between a beam expanding lens group and the focusing mirror is inconvenient to adjust, so that the positive and negative defocusing amount of a focusing light spot is changed, the cutting effect is poor, the inspection and maintenance are inconvenient, the inner cavity of an installed nozzle is inconvenient to adjust and control, workers need to frequently replace and operate, and the use flexibility is poor, and the automatic and accurate focusing processing head for the ultrahigh-power laser cutting is provided.

In order to achieve the purpose, the invention adopts the following technical scheme:

automatic accurate focusing processing head of super high power laser cutting, which comprises a housin, the top of casing is fixed with laser incident end face mirror part, the below that the inside of casing is located laser incident end face mirror part is provided with collimation expander lens group part, the below that the below of collimation expander lens group part is located the casing is provided with focusing lens group part, the sealing port has been seted up on a side surface of casing, one side of casing is provided with the mounting panel with sealing port looks adaptation, be provided with the adjusting part who is used for adjusting focusing lens group part on the mounting panel, the last linkage of adjusting part has power component, a side surface of mounting panel is provided with the display module who is used for showing regulation numerical value, the top of mounting panel is fixed with the limiting plate, be provided with on the casing and be used for the fixed spacing dismouting subassembly of mounting panel, the bottom of casing is fixed with the connector, the surface threaded connection of connector has the nozzle head, be provided with the fine setting subassembly on the nozzle head, the outer wall of casing is provided with cutting gas interface.

Preferably, the adjusting part is including fixing the fixed disc on mounting panel side surface, the surface mounting of fixed disc has the drive division, the output pipe of drive division runs through fixed disc and is fixed with the axis of rotation, the end fixing of axis of rotation has the driving gear, the surface engagement of driving gear has the rack, a side fixed surface of rack has the connecting block, the one end of connecting block is fixed with T type slider, the tip of T type slider slides and has T type spout, T type spout is seted up at one side of mounting panel on the surface, the bottom of rack is fixed with L type connecting rod, the tip and the focusing mirror group part fixed connection of L type connecting rod.

Preferably, one side fixed surface of rack has the bracing piece, the end fixing of bracing piece has the ejector pin, the end fixing of ejector pin has first piston, first piston sliding connection is in the piston cylinder, the piston cylinder is fixed on one side of mounting panel on the surface, the ejector pin slides and runs through in the through-hole, the through-hole is seted up at the bottom of piston cylinder on the surface, the top of piston cylinder is fixed with the gas-supply pipe, the end fixing of gas-supply pipe has the connecting pipe, the embedding of connecting pipe is installed on the mounting panel.

Preferably, the end of the connecting pipe is communicated with an annular groove, the annular groove is formed in the surface of one side of the mounting plate, an annular sealing glass plate is hermetically mounted on the annular groove, a second piston is slidably connected to the inside of the annular groove, a pointer is fixed on the surface of the second piston, and scales are arranged on the surface of the annular sealing glass plate.

Preferably, a sealing ring is fixed on the surface of one side of the mounting plate, and the sealing ring is matched with the sealing port.

Preferably, a stopper is fixed to an outer wall of one side of the housing, and the stopper contacts with a bottom surface of the mounting plate.

Preferably, the dismouting subassembly is including fixing the arc fixed plate at the casing outer wall, the inside slip of arc fixed plate has the pulling pole, the fixed surface of pulling pole has the spacing dish, be fixed with the extrusion spring between pulling pole and the arc fixed plate, the extrusion spring cover is established on the surface of pulling pole, the one end of pulling pole is fixed with the pull ring, one side that the surface of spacing dish is located the pulling pole is fixed with the slide bar, the slide bar slides and runs through in the arc fixed plate, the slip of pulling pole runs through in the jack, the jack is seted up at concave template on the surface, concave template is fixed on one side outer wall of casing.

Preferably, the fine adjustment assembly comprises a threaded rod in threaded connection with the nozzle head, a screwing block is fixed at one end of the threaded rod, an installation seat is arranged at the other end of the threaded rod in a rotating mode through a pin shaft, a moving block is arranged on the surface of one side of the installation seat in a rotating mode through a bearing, the moving block slides in a moving groove, the moving groove is formed in the surface of one side of the rotating plate, an arc-shaped baffle is fixed on the surface of the other side of the rotating plate, and one end of the rotating plate is connected with the inner wall of the nozzle head in a rotating mode through the pin shaft.

Preferably, an observation window is arranged on the outer wall of one side of the shell, and heat-resistant transparent glass is arranged on the observation window.

Compared with the prior art, the invention provides an automatic and accurate focusing processing head for ultrahigh-power laser cutting, which has the following beneficial effects:

1. this automatic accurate focusing processing head of super high power laser cutting through the mounting panel that sets up on the casing mutually supports with adjusting part, and then conveniently drives focusing mirror group part and reciprocates, adjusts and the distance of collimation beam expanding mirror group part, and automated operation, and then makes things convenient for equipment to carry out fine focusing according to cutting workpiece, improve equipment processing's cutting effect.

2. This automatic accurate focusing processing head of super high power laser cutting through mutually supporting at adjusting part, power component and display module, the numerical value that carries out the fine setting to focusing mirror group part shows in real time on the outer wall of casing, and the operating personnel of being convenient for observes to realize the accurate regulation control of equipment, improve equipment automatically regulated's accurate nature, the quality of guarantee equipment cutting product.

3. This automatic accurate focusing processing head of super high power laser cutting through the fine setting subassembly that sets up on the nozzle head, gives vent to anger the size to nozzle head inner chamber air flue air nozzle and carry out regulation and control, and the cutting process of the different work pieces of adaptation uses the flexibility high, saves the trouble of changing the dismouting.

The device is characterized in that the mounting plate, the adjusting component, the power component, the display component, the dismounting component and the fine adjustment component are matched with one another, so that when the device is used, the distance between the focusing lens group component and the collimation beam expanding lens group component can be automatically adjusted, the adjusted numerical value is displayed on the outer wall of the shell in real time for a worker to check, the accurate control of the change of the positive and negative defocusing amount of a focusing light spot is realized, the cutting processing effect of the device is improved, the product processing quality is guaranteed, the dismounting and maintenance of the focusing lens group component are facilitated, the flexibility in use of the device is high, and the trouble of replacing a dismounting nozzle head is saved.

Drawings

Fig. 1 is a schematic structural diagram of an automatic and precise focusing processing head for ultrahigh power laser cutting according to the present invention;

FIG. 2 is a cross-sectional view of an ultra-high power laser cutting automatic fine focusing machining head according to the present invention;

FIG. 3 is an enlarged view of area A of FIG. 2 according to the present invention;

FIG. 4 is a schematic partial perspective view of an adjustment assembly according to the present invention;

FIG. 5 is a schematic view of a power module according to the present invention in a partial cross-section;

FIG. 6 is a schematic structural view of the housing according to the present invention with the upper sealing port opened;

FIG. 7 is an enlarged view of area B of FIG. 6 according to the present invention;

fig. 8 is a partial sectional structural view of a nozzle according to the present invention.

In the figure: 1. a housing; 2. a laser incident end mirror member; 3. a collimating beam expander lens assembly; 4. a focusing lens assembly; 5. sealing the opening; 6. mounting a plate; 7. an adjustment assembly; 701. fixing the disc; 702. a drive section; 703. a rotating shaft; 704. a driving gear; 705. a rack; 706. connecting blocks; 707. a T-shaped slider; 708. a T-shaped chute; 709. an L-shaped connecting rod; 8. a power assembly; 801. a support bar; 802. a top rod; 803. a first piston; 804. a piston cylinder; 805. a through hole; 806. a gas delivery pipe; 807. a connecting pipe; 9. a display component; 901. an annular groove; 902. an annular sealing glass plate; 903. a second piston; 904. a pointer; 905. calibration; 10. a seal ring; 11. a limiting plate; 12. a stopper; 13. disassembling and assembling the components; 1301. an arc-shaped fixing plate; 1302. pulling a rod; 1303. a limiting disc; 1304. a compression spring; 1305. a pull ring; 1306. a slide bar; 1307. a jack; 1308. a concave plate; 14. a connector; 15. a nozzle head; 16. a fine tuning component; 1601. a threaded rod; 1602. screwing the block; 1603. a mounting seat; 1604. a rotating plate; 1605. an arc-shaped baffle plate; 17. and cutting the gas interface.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example 1:

referring to fig. 1-8, an automatic and accurate focusing processing head for ultrahigh power laser cutting comprises a shell 1, a laser incidence end face mirror component 2 is fixed at the top of the shell 1, a collimation beam expanding mirror component 3 is arranged below the laser incidence end face mirror component 2 inside the shell 1, a focusing mirror component 4 is arranged inside the shell 1 below the collimation beam expanding mirror component 3, a sealing opening 5 is formed in the surface of one side of the shell 1, a mounting plate 6 matched with the sealing opening 5 is arranged on one side of the shell 1, an adjusting component 7 used for adjusting the focusing mirror component 4 is arranged on the mounting plate 6, a power component 8 is linked on the adjusting component 7, a display component 9 used for displaying an adjusting value is arranged on the surface of one side of the mounting plate 6, a limiting plate 11 is fixed at the top of the mounting plate 6, a dismounting component 13 used for fixing and limiting the mounting plate 6 is arranged on the shell 1, a connector 14 is fixed at the bottom of the shell 1, a nozzle head 15 is connected to the surface of the connector 14 through threads, a nozzle head 15 is arranged on the nozzle head 15, a fine adjustment component 16, and a cutting gas interface 17 is arranged on the outer wall of the shell 1.

In the invention, after the shell 1 is connected with a laser emitting device in use, a laser beam is sprayed out from the nozzle head 15 through the laser incidence end surface lens component 2, the collimating beam expanding lens component 3 and the focusing lens component 4 through cutting gas guided by the cutting gas interface 17, so as to cut a workpiece, in the using process, the adjusting component 7 arranged on the mounting plate 6 is used for conveniently adjusting the placing position of the focusing lens component 4, further controlling the mounting distance between the focusing lens component 4 and the collimating beam expanding lens component 3, further facilitating the equipment to carry out good focusing according to the cut workpiece, improving the cutting effect of equipment processing, when the adjusting component 7 is used for driving the power component 8 to operate, thereby generating a linkage effect, so that the power component 8 operates to push air to the display component 9, the display component 9 is used for displaying the adjusted value in real time, facilitating the checking of the working personnel, when the focusing lens component 4 needs to be detached and cleaned, the detaching and installing component 13 arranged on the shell 1 is used for conveniently fixing the mounting plate 6, further facilitating the working personnel to take the mounting plate 1, simultaneously, and ensuring the detaching and the detaching efficiency of the cutting nozzle head 15 to be adjusted by the air duct, thereby improving the efficiency of the cutting and further facilitating the adjustment of the cutting nozzle head.

Example 2:

The adjusting assembly 7 comprises a fixed disc 701 fixed on one side surface of the mounting plate 6, a driving part 702 is installed on the surface of the fixed disc 701, a rotating shaft 703 is fixed on the output end pipe of the driving part 702 through the fixed disc 701, a driving gear 704 is fixed on the end part of the rotating shaft 703, a rack 705 is meshed on the surface of the driving gear 704, a connecting block 706 is fixed on one side surface of the rack 705, a T-shaped sliding block 707 is fixed on one end of the connecting block 706, a T-shaped sliding groove 708 is arranged on the end part of the T-shaped sliding block 707 in a sliding manner, the T-shaped sliding groove 708 is arranged on one side surface of the mounting plate 6, an L-shaped connecting rod 709 is fixed on the bottom part of the rack 705, and the end part of the L-shaped connecting rod 709 is fixedly connected with the focusing lens group component 4.

In the invention, a driving part 702 is started to drive a rotating shaft 703 to rotate, a driving gear 704 is driven to rotate through the rotation of the rotating shaft 703, a rack 705 is driven to move up and down through the rotation of the driving gear 704, when the rack 705 moves, a T-shaped sliding block 707 slides in a T-shaped sliding groove 708 to limit the movement of the rack 705, the stability of the structure operation is improved, when the rack 705 moves, an L-shaped connecting rod 709 is driven to move synchronously, the end part of the L-shaped connecting rod 709 is fixedly connected with a focusing lens group component 4, the focusing lens group component 4 is driven to move up and down, the installation position between the focusing lens group component and a collimation beam expanding lens group component 3 is adjusted, the operation control is automated, and the operation is convenient and fast.

Example 3:

referring to fig. 1-8, an automatic and accurate focusing machining head for ultrahigh power laser cutting comprises a housing 1, a laser incident end face mirror component 2 is fixed at the top of the housing 1, a collimation beam expanding mirror component 3 is arranged below the laser incident end face mirror component 2 inside the housing 1, a focusing mirror component 4 is arranged inside the housing 1 below the collimation beam expanding mirror component 3, a sealing opening 5 is formed in one side surface of the housing 1, a mounting plate 6 matched with the sealing opening 5 is arranged on one side of the housing 1, an adjusting component 7 used for adjusting the focusing mirror component 4 is arranged on the mounting plate 6, a power component 8 is linked on the adjusting component 7, a display component 9 used for displaying an adjusting value is arranged on one side surface of the mounting plate 6, a limiting plate 11 is fixed at the top of the mounting plate 6, a dismounting component 13 used for fixing and limiting the mounting plate 6 is arranged on the housing 1, a connector 14 is fixed at the bottom of the housing 1, a nozzle head 15 is connected with a nozzle head 15 through a thread on the surface of the connector 14, a fine adjustment component 16 is arranged on the nozzle head 15, and a cutting gas interface 17 is arranged on the outer wall of the housing 1.

A support rod 801 is fixed on the surface of one side of the rack 705, a push rod 802 is fixed on the end of the support rod 801, a first piston 803 is fixed on the end of the push rod 802, the first piston 803 is connected in a sliding manner in a piston cylinder 804, the piston cylinder 804 is fixed on the surface of one side of the mounting plate 6, the push rod 802 penetrates through a through hole 805 in a sliding manner, the through hole 805 is formed in the surface of the bottom of the piston cylinder 804, an air pipe 806 is fixed on the top of the piston cylinder 804, a connecting pipe 807 is fixed on the end of the air pipe 806, and the connecting pipe 807 is embedded in the mounting plate 6.

In the invention, when the rack 705 moves up and down, the supporting rod 801 is driven to move synchronously, and the surface of the supporting rod 801 is fixed with the ejector rod 802, so that the first piston 803 at the end of the ejector rod 802 slides up and down in the piston cylinder 804, and when the first piston 803 slides, the air in the piston cylinder 804 is extruded and pushed into the air pipe 806 and is conveyed to the connecting pipe 807 through the air pipe 806, and then enters the display assembly 9, thereby providing power for the display assembly 9, being convenient for trouble saving and effectively saving a power source.

Example 4:

The end of the connecting pipe 807 is communicated with an annular groove 901, the annular groove 901 is arranged on one side surface of the mounting plate 6, an annular sealing glass plate 902 is arranged on the annular groove 901 in a sealing mode, a second piston 903 is connected inside the annular groove 901 in a sliding mode, a pointer 904 is fixed on the surface of the second piston 903, and scales 905 are arranged on the surface of the annular sealing glass plate 902.

In the invention, when air in the connecting pipe 807 is pushed into the annular groove 901, the channel between the connecting pipe 807 and the annular groove 901 is in a sealed state, the second piston 903 is pushed to slide in the annular groove 901 by air extrusion, a moving data value is obtained by a pointer 904 on the second piston 903 corresponding to a scale 905 arranged on the annular sealing glass plate 902, so that a worker can conveniently check the record, the ejector rod 802 carries out limit sealing on the annular groove 901, an air outlet hole is arranged on an air passage at the position of the other end of the second piston 903 far away from the connecting pipe 807, and when the second piston 903 slides in the air passage at one end of the annular groove 901 by air extrusion, the other end of the second piston 903 is free from resistance.

Example 5:

A sealing ring 10 is fixed on the surface of one side of the mounting plate 6, the sealing ring 10 is matched with the sealing opening 5, a stop block 12 is fixed on the outer wall of one side of the shell 1, the stop block 12 is in surface contact with the bottom of the mounting plate 6, an observation window is installed on the outer wall of one side of the shell 1, and heat-resistant transparent glass is installed on the observation window.

According to the invention, the sealing ring 10 arranged on the surface of the mounting plate 6 is convenient to correspond to the sealing groove at the sealing port 5, so that the sealing of the joint between the shell 1 and the mounting plate 6 is realized, dust and foreign matters are prevented from entering the shell 1, a good protection effect is achieved, the bottom of the mounting plate 6 can be supported and limited by the stop block 12 arranged on the shell 1, a certain limiting effect is achieved, the mounting plate 6 is prevented from displacing, and the condition that a worker watches the internal mechanical parts is facilitated through the observation window arranged on the shell 1, so that the inspection and maintenance are facilitated.

Example 6:

The dismounting assembly 13 comprises an arc-shaped fixing plate 1301 fixed on the outer wall of the housing 1, a pulling rod 1302 slides inside the arc-shaped fixing plate 1301, a limiting disc 1303 is fixed on the surface of the pulling rod 1302, an extrusion spring 1304 is fixed between the pulling rod 1302 and the arc-shaped fixing plate 1301, the extrusion spring 1304 is sleeved on the surface of the pulling rod 1302, a pull ring 1305 is fixed at one end of the pulling rod 1302, a slide rod 1306 is fixed on one side, located on the surface of the limiting disc 1303, of the pulling rod 1302, the slide rod 1306 penetrates through the arc-shaped fixing plate 1301 in a sliding mode, the pulling rod 1302 penetrates through a jack 1307 in a sliding mode, the jack 1307 is arranged on the surface of a concave plate 1308, and the concave plate 1308 is fixed on the outer wall of one side of the housing 1.

In the invention, the pull ring 1305 is manually pulled to drive the pull rod 1302 to slide leftwards, at the moment, the extrusion spring 1304 is in a compressed state, the limit disc 1303 is extruded by utilizing the elastic resilience of the extrusion spring 1304, the pull rod 1302 on the limit disc 1303 is further driven to move, the plug holes 1307 on the corresponding concave plates 1308 are inserted in a penetrating manner and then are tightly abutted against and limited by the limit plates 11 mounted on the corresponding mounting plates 6, when the mounting plate is dismounted, the pull ring 1305 is manually pulled to separate the pull rod 1302 from the limit plates 11 and then break away from the plug holes 1307, so that the mounting plate 6 can be wholly dismounted from the shell 1, and the focusing lens group component 4 mounted in the shell 1 on one side of the mounting plate 6 can be dismounted for maintenance and inspection operation.

Example 7:

Fine setting subassembly 16 includes threaded rod 1601 of threaded connection on nozzle head 15, and the one end of threaded rod 1601 is fixed with twists moving block 1602, and the other end of threaded rod 1601 rotates through the round pin axle has mount pad 1603, and one side surface of mount pad 1603 rotates through the bearing and has the movable block, and the movable block slides in the shifting chute, and the shifting chute is seted up on one side surface of rotor plate 1604, and the opposite side fixed surface of rotor plate 1604 has cowl 1605, and the one end of rotor plate 1604 rotates through round pin axle and nozzle head 15 and is connected.

According to the invention, the threaded rods 1601 are driven to rotate by manually rotating the screwing block 1602, so that the two threaded rods 1601 move in opposite directions to further drive the rotating plate 1604 and the arc-shaped baffle 1605 to rotate, the placing angle of the rotating plate is adjusted, and when the rotating plate is adjusted, the moving block slides in the moving groove to move the rotating plate 1604 in a limiting manner, so that the structure can run more smoothly, the stability of the structure is improved, the size of an air passage in the nozzle head 15 is controlled, the cutting efficiency of the equipment is improved, frequent replacement of the nozzle head 15 by manpower according to different cutting workpieces is omitted, and the device is trouble-saving and convenient.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. Automatic accurate focusing processing head of super high power laser cutting, including casing (1), its characterized in that, the top of casing (1) is fixed with laser incident end face mirror part (2), the below that the inside of casing (1) is located laser incident end face mirror part (2) is provided with collimation expander set part (3), the inside that the below of collimation expander set part (3) is located casing (1) is provided with focusing mirror set part (4), sealing opening (5) have been seted up to a side surface of casing (1), one side of casing (1) is provided with mounting panel (6) with sealing opening (5) looks adaptation, be provided with adjusting part (7) that are used for adjusting focusing mirror set part (4) on mounting panel (6), linkage has power component (8) on adjusting part (7), a side surface of mounting panel (6) is provided with display module (9) that are used for showing regulation numerical value, the top of mounting panel (6) is fixed with limiting plate (11), be provided with dismouting subassembly (13) that are used for fixing mounting panel (6) on casing (1), the nozzle head (1) is fixed with threaded connection head (14), nozzle head (14) is provided with fine setting head (15), the outer wall of the shell (1) is provided with a cutting gas interface (17).

2. The ultrahigh-power laser cutting automatic precise focusing machining head according to claim 1, wherein the adjusting assembly (7) comprises a fixed disc (701) fixed on one side surface of a mounting plate (6), a driving part (702) is mounted on the surface of the fixed disc (701), an output end pipe of the driving part (702) penetrates through the fixed disc (701) to be fixed with a rotating shaft (703), a driving gear (704) is fixed at the end part of the rotating shaft (703), a rack (705) is meshed with the surface of the driving gear (704), a connecting block (706) is fixed on one side surface of the rack (705), a T-shaped sliding block (707) is fixed at one end part of the connecting block (706), a T-shaped sliding groove (708) is slid at the end part of the T-shaped sliding block (707), the T-shaped sliding groove (708) is opened on one side surface of the mounting plate (6), an L-shaped connecting rod (709) is fixed at the bottom part of the rack (705), and the end part of the L-shaped connecting rod (709) is fixedly connected with the focusing lens group component (4).

3. The ultrahigh-power laser cutting automatic precise focusing machining head as claimed in claim 2, wherein a support rod (801) is fixed on one side surface of the rack (705), a push rod (802) is fixed on the end of the support rod (801), a first piston (803) is fixed on the end of the push rod (802), the first piston (803) is slidably connected in a piston cylinder (804), the piston cylinder (804) is fixed on one side surface of the mounting plate (6), the push rod (802) is slidably penetrated in a through hole (805), the through hole (805) is formed in the bottom surface of the piston cylinder (804), an air pipe (806) is fixed on the top of the piston cylinder (804), a connecting pipe (807) is fixed on the end of the air pipe (806), and the connecting pipe (807) is embedded in the mounting plate (6).

4. The ultrahigh-power laser cutting automatic precise focusing processing head as claimed in claim 3, wherein the end of the connecting pipe (807) is communicated with an annular groove (901), the annular groove (901) is formed in one side surface of the mounting plate (6), an annular sealing glass plate (902) is hermetically mounted on the annular groove (901), a second piston (903) is slidably connected inside the annular groove (901), a pointer (904) is fixed on the surface of the second piston (903), and a scale (905) is arranged on the surface of the annular sealing glass plate (902).

5. The automatic and precise focusing processing head for ultrahigh power laser cutting according to claim 1, characterized in that a sealing ring (10) is fixed on one side surface of the mounting plate (6), and the sealing ring (10) is matched with the sealing port (5).

6. The ultrahigh power laser cutting automatic fine focusing machining head as claimed in claim 1, characterized in that a stopper (12) is fixed to an outer wall of one side of the housing (1), the stopper (12) being in contact with a bottom surface of the mounting plate (6).

7. The ultrahigh-power laser cutting automatic precise focusing machining head as claimed in claim 1, wherein the dismounting assembly (13) comprises an arc-shaped fixing plate (1301) fixed on the outer wall of the housing (1), a pulling rod (1302) slides inside the arc-shaped fixing plate (1301), a limiting disc (1303) is fixed on the surface of the pulling rod (1302), a compression spring (1304) is fixed between the pulling rod (1302) and the arc-shaped fixing plate (1301), the compression spring (1304) is sleeved on the surface of the pulling rod (1302), a pull ring (1305) is fixed at one end of the pulling rod (1302), a slide rod (1306) is fixed on one side of the pulling rod (1302), the slide rod (1306) slides through the arc-shaped fixing plate (1301)), the sliding of the pulling rod (1302) penetrates through a jack (1307), the jack (1307) is opened on the surface of a concave template (1308), and the concave template (1308) is fixed on the outer wall of one side of the housing (1).

8. The automatic high-power laser cutting precision focusing machining head as claimed in claim 1, wherein the fine adjustment assembly (16) comprises a threaded rod (1601) in threaded connection with a nozzle head (15), a screwing block (1602) is fixed at one end of the threaded rod (1601), a mounting seat (1603) is rotated at the other end of the threaded rod (1601) through a pin shaft, a moving block is rotated on one side surface of the mounting seat (1603) through a bearing, the moving block slides in a moving groove, the moving groove is formed in one side surface of a rotating plate (1604), an arc-shaped baffle (1605) is fixed on the other side surface of the rotating plate (1604), and one end of the rotating plate (1604) is rotatably connected with the inner wall of the nozzle head (15) through the pin shaft.

9. The automatic and precise focusing processing head for the ultrahigh-power laser cutting as claimed in claim 1, characterized in that an observation window is installed on the outer wall of one side of the housing (1), and heat-resistant transparent glass is installed on the observation window.