Active adsorption type water-guided laser jet splashing suppression device

Abstract

The invention belongs to the technical field of water-jet guided laser, and relates to an active adsorption type water-jet guided laser jet splashing suppression device. When the water-guided laser equipment carries out processing operation, the water-guided laser jet splashing suppression device is adopted, the negative pressure adsorption disc is matched with the vacuum generator to generate negative pressure, sputtering backflushing generated after high-pressure jet makes contact with a workpiece can be actively and effectively absorbed, sputtering water drops are prevented from gathering at the lower end of a nozzle and secondary ejection is prevented, and the working efficiency is improved. And meanwhile, water mist generated in a processing area is continuously absorbed, so that the form stability of the water beam optical fiber is protected from multiple aspects, and the processing precision and the material removal consistency are obviously improved. The radial rectifying ring is adopted to replace a multi-symmetric-column flow channel structure of a traditional coupling device, the requirements for stable water flow in a cavity of the water-guided laser coupling device and uniform distribution of a water layer at the upper end of a nozzle can be met, homogenization of the water flow speed and pressure in the cavity is achieved, and the machining difficulty and cost of production and manufacturing of the coupling device are reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of water-guided lasers and relates to an active adsorption type water-guided laser jet splash suppression device. Background Art

[0002] Water-guided laser processing technology uses the principle of total reflection of laser inside the water beam and at the interface between the air and the water beam to couple the convergent laser of a specific wavelength into a high-speed fine water beam to process the workpiece. Compared with traditional laser processing, workpieces processed by water-guided laser have the characteristics of small heat-affected zone and high processing accuracy. The stability of the water jet limits the processing capability of the water-guided laser, and the splash of high-pressure water in the groove structure is a key factor affecting the stability of the water jet.

[0003] The invention patent (CN116727844) has been authorized, and the patent name is: A water-guided laser water jet stabilization and enhancement coupling device. The patent provides a water-guided laser water jet stabilization and enhancement coupling device, which includes an upper shell, a lower shell, an intermediate shell, a sealing cover and a light-transmitting glass. The lower shell of the coupling device is provided with a jet cavity and an annular air gap, and the stability of the water jet is enhanced by forming a protective atmosphere. The device can reduce the friction between the high-speed water jet and the air to a certain extent and increase the stable length of the water jet. However, in practical applications, it is difficult to design a reasonable annular air gap structure, and the device does not fully consider the impact of the sputtering recoil on the jet after the jet contacts the workpiece.

[0004] The invention patent (CN105817760) has been authorized, and the patent name is: A nozzle splash-proof device for a water-guided laser processing system. The patent provides a nozzle splash-proof device for a water-guided laser processing system, which includes a baffle, a rotor, a stator, an intermediate housing, and a nozzle. The baffle can block the splashing of water generated during the processing process, and by driving the baffle with the rotor, the water droplets are thrown away from the surrounding of the water jet under the action of gravity and centrifugal force. The stability of the water jet is guaranteed. However, the device does not fully consider that the water mist environment during the water-guided laser processing will also affect the jet stability. The device is insufficient in its ability to handle water mist, and significantly increases the target distance, sacrificing processing efficiency to a certain extent. Summary of the invention

[0005] In order to solve the problems existing in the above-mentioned prior art, the object of the present invention is to provide an active adsorption type water-guided laser jet splash suppression device with high integration, strong anti-splashing effect and simple structure.

[0006] The technical means adopted by the present invention are as follows:

[0007] An active adsorption type water-guided laser jet splash suppression device comprises a coupling cavity upper shell, a coupling cavity base is installed below the coupling cavity upper shell, radial rectification modules are assembled inside the coupling cavity upper shell and the coupling cavity base, and a negative pressure adsorption disk is installed below the coupling cavity base.

[0008] The coupling cavity upper shell is provided with a high-pressure water inlet, which is symmetrically distributed on both sides, so that high-pressure water can enter the coupling cavity evenly. A light inlet is provided in the center of the coupling cavity upper shell, and the light inlet is used to allow laser to pass through. The coupling cavity base is provided with a first water outlet in the center for jet to pass through. A straightening ring retaining groove is provided in the center of the upper end surface of the coupling cavity base to position the radial straightening ring; an outer ring sealing groove and an inner ring sealing groove are provided on the upper end surface of the coupling cavity base to place the sealing ring; the coupling cavity base is positioned with the coupling cavity upper shell through the positioning step on the upper end surface, and is connected with the coupling cavity upper shell through threads, and the coupling cavity base and the coupling cavity upper shell are clamped to form a sealed high-pressure water cavity. The radial straightening module includes a window pressing block, and the window pressing block is positioned through the step below the light inlet; a radial straightening ring is installed between the window pressing block and the coupling cavity base.

[0009] The radial rectifying ring is provided with an upper positioning groove and a lower positioning groove. The diameter φ of the upper positioning groove can be set to 24mm-30mm, and a multi-specification optical window with a thickness h1 of 4mm-6mm can be installed inside. The unsupported pressure area of ​​the optical window is 12.56mm 2 -28.26mm 2 , can withstand a maximum internal pressure of 40Mpa, meeting the working conditions of water-guided laser high-pressure jet. A sealing sheet is arranged between the optical window and the window block. A water jet nozzle is installed in the lower positioning groove, and the center of the water jet nozzle can open a multi-specification fine cylindrical spray hole with a diameter of 50μm-200μm to meet the needs of different processing scenarios. Radial rectification channels are evenly arranged on the circumference of the radial rectification ring. The diameter of the radial rectification channel D1 can be set to 1.5mm-3mm, and the number can be set to 6-8, which suppresses the vortex above the water jet nozzle and the uneven velocity distribution, thereby achieving effective rectification and generating a high-pressure jet with a stable interface and strong bundling.

[0010] The negative pressure adsorption plate is connected to the coupling chamber base through threads; a second water outlet is provided in the center of the negative pressure adsorption plate, and a structural adsorption hole group is provided on the lower end surface. The diameters of the holes in the adsorption hole group are equal, and D2 can be set to 1mm-1.5mm. An adsorption chamber is provided above to collect splashing water droplets and process water mist and transport them to the adsorption pipeline. The height h2 of the adsorption chamber can be set to 2mm-4mm to ensure sufficient liquid absorption flow; the adsorption pipeline has a diameter of 2mm-4mm and is provided on the circumference of the negative pressure adsorption plate and connected to the vacuum generator.

[0011] The structural adsorption hole group on the lower end surface of the negative pressure adsorption disk is radially distributed with the second water outlet as the center. The angle θ between two adjacent radial paths can be set to 18°-24°, and the distance d between adjacent adsorption holes in each radial path can be set to 2.4mm-4.8mm. Since the dense area of ​​water droplet splashing in the water-guided laser is close to the center, the adsorption hole group as a whole presents a structural feature of dense inner circle and sparse outer circle. There are about 9 holes per square centimeter in the inner circle and about 4 holes per square centimeter in the outer circle. Therefore, the radial distribution of the adsorption hole group can improve the adsorption effect of the inner circle under the same adsorption force, and ensure the splash suppression ability of the negative pressure adsorption disk to a large extent.

[0012] A method for using an active adsorption-type water-guided laser jet splash suppression device, the steps are as follows:

[0013] Step 1: Connect the high-pressure water pipe to the high-pressure water inlets on both sides of the upper shell of the coupling chamber to ensure that the water chamber is well sealed. Connect the vacuum generator to the adsorption pipeline of the negative pressure adsorption plate to ensure that the pipeline connection is reliable.

[0014] Step 2: Open the water pipe valve, continue to pass high-pressure water with stable pressure, and check whether there is water leakage at the interface. Wait for the high-pressure water to completely fill the upper shell of the coupling chamber and the inside of the coupling chamber base. Observe from the bottom of the coupling chamber base that a water jet is ejected from the water jet nozzle. If the surface of the water jet is smooth, the jet is stable and tight, and the clustering is strong, it means that the fine jet has met the conditions for water-light coupling, and the next step can be performed.

[0015] Step 3: Turn on the vacuum generator and wait for the pressure pointer on the vacuum generator to remain stable.

[0016] Step 4: After ensuring that the laser can enter the interior through the light inlet and completely enter the water jet nozzle, turn on the laser with the set power, and the device will generate a fine water beam with energy, which can be used to process the workpiece. At this time, the splash and water mist generated by the processing will be continuously extracted by the negative pressure adsorption plate.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. During the water-guided laser equipment processing operation, a water-guided laser jet splash suppression device is used. The negative pressure is generated by the negative pressure adsorption plate and the vacuum generator. It can actively and effectively absorb the sputtering recoil after the high-pressure jet contacts the workpiece, prevent the sputtering water droplets from gathering at the lower end of the nozzle and secondary ejection, and continuously absorb the water mist generated in the processing area. It protects the morphology stability of the water beam optical fiber from multiple aspects, and significantly improves the processing accuracy and material removal consistency.

[0019] 2. Stable and efficient water-guided laser processing is achieved through the coupling cavity upper shell, coupling cavity base, radial rectification module, negative pressure adsorption disk, etc. The device has the characteristics of low design difficulty, low manufacturing cost and significant jet protection ability.

[0020] 3. The use of radial straightening rings to replace the multi-symmetrical column flow channel structure of the traditional coupling device can meet the requirements of stable water flow inside the cavity of the water-guided laser coupling device and uniform distribution of the water layer on the top of the nozzle, achieve uniform water flow rate and pressure inside the cavity, and reduce the processing difficulty and cost of the coupling device production.

[0021] Based on the above reasons, the present invention can be widely promoted in the field of water-guided laser high-efficiency precision machining. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a three-dimensional schematic diagram of the exploded assembly of various parts of an active adsorption-type water-guided laser jet splash suppression device in a specific embodiment of the present invention;

[0024] Figure 2 is a cross-sectional view of an active adsorption type water-guided laser jet splash suppression device in a specific embodiment of the present invention;

[0025] Figure 3 It is a structural schematic diagram of a radial straightening ring in an active adsorption-type water-guided laser jet splash suppression device in a specific embodiment of the present invention;

[0026] Figure 4 It is a schematic cross-sectional structure diagram of a negative pressure adsorption disk in an active adsorption type water-guided laser jet splash suppression device in a specific embodiment of the present invention;

[0027] Figure 5 It is a schematic diagram of the adsorption hole distribution of a negative pressure adsorption disk in an active adsorption type water-guided laser jet splash suppression device in a specific embodiment of the present invention;

[0028] In the figure: 101, coupling cavity upper shell; 102, high-pressure water inlet; 103, light inlet; 2, radial rectification module; 201, window block; 202, radial rectification ring; 203, water jet nozzle; 204, optical window; 205, sealing sheet; 206, upper positioning groove; 207, lower positioning groove; 208, radial rectification channel; 301, coupling cavity base; 302, first water outlet; 303, rectification ring retaining groove; 304, outer ring sealing groove; 305, inner ring sealing groove; 401, negative pressure adsorption disk; 402, second water outlet; 403, adsorption hole group; 404, adsorption chamber; 405, adsorption pipeline. DETAILED DESCRIPTION

[0029] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings.

[0030] Embodiment 1:

[0031] like Figure 1 As shown, an active adsorption type water-guided laser jet splash suppression device includes a coupling cavity upper shell 101, a coupling cavity base 301 is installed below the coupling cavity upper shell 101, radial rectification modules 2 are assembled inside the coupling cavity upper shell 101 and the coupling cavity base 301, and a negative pressure adsorption disk 401 is installed below the coupling cavity base 301.

[0032] like Figure 2 As shown, the coupling cavity upper shell 101 is provided with a high-pressure water inlet 102, which is used to allow high-pressure water to enter the coupling cavity, and is symmetrically distributed on both sides to keep the flow field inside the cavity uniform. A light inlet 103 is provided at the center of the coupling cavity upper shell 101, and the light inlet 103 is used to allow laser to pass through. A first water outlet 302 is provided at the center of the coupling cavity base 301 for the passage of jet. A straightening ring retaining groove 303 is provided at the center of the upper end surface of the coupling cavity base 301 to position the radial straightening ring 202; an outer ring sealing groove 304 and an inner ring sealing groove 305 are provided on the upper end surface of the coupling cavity base 301 to place the sealing ring; the coupling cavity base 301 is positioned with the coupling cavity upper shell 101 through the positioning step on the upper end surface, and is connected to the coupling cavity upper shell 101 through threads, and the coupling cavity base 301 and the coupling cavity upper shell 101 are clamped to form a sealed high-pressure water cavity. The radial rectification module 2 comprises a window pressing block 201 , and the window pressing block 201 is positioned by a step below the light inlet hole 103 ; a radial rectification ring 202 is installed between the window pressing block 201 and the coupling cavity base 301 .

[0033] like Figure 3As shown, the radial rectification ring 202 is provided with an upper positioning groove 206 and a lower positioning groove 207. The upper positioning groove 206 has a diameter of φ=30 mm, and an optical window 204 with a maximum thickness of h1=5 mm is installed inside the upper positioning groove 206. The unsupported pressure area of ​​the optical window 204 is 28.26 mm 2 , can withstand an internal pressure greater than 30Mpa, meeting the working conditions of water-guided laser high-pressure jet. A sealing sheet 205 is arranged between the optical window 204 and the window block 201. A water jet nozzle 203 is installed in the lower positioning groove 207. The center of the water jet nozzle 203 has a multi-specification fine cylindrical spray hole with a diameter of 50μm to meet the needs of different processing scenarios. Radial rectifying channels 208 are evenly arranged on the circumference of the radial rectifying ring 202. The diameter of the radial rectifying channel 208 is D1=2mm, and the number is 8. This distribution method can balance the distribution of high-pressure water streamlines inside the cavity, suppress the occurrence of vortices and uneven velocity distribution above the water jet nozzle 203, and the high-pressure water can be effectively rectified, thereby generating a high-pressure jet with a stable interface and strong bundling.

[0034] like Figure 4 As shown, the negative pressure adsorption disk 401 is connected to the coupling cavity base 301 by threads; a second water outlet 402 is provided in the center of the negative pressure adsorption disk 401, and a structural adsorption hole group 403 is provided on the lower end surface. The diameter D2 of each hole in the adsorption hole group 403 is 1mm, and an adsorption chamber 404 is provided above to collect splashing water droplets and process water mist and transport them to the adsorption pipeline 405. The height h2 of the adsorption chamber is 2mm, which can ensure sufficient liquid absorption flow; the adsorption pipeline 405 has a diameter of 2mm and is arranged on the circumference of the negative pressure adsorption disk and connected to the vacuum generator.

[0035] like Figure 5 As shown, the structural adsorption hole group 403 on the lower end face of the negative pressure adsorption disk 401 is radially distributed with the second water outlet 402 as the center, the angle θ between two adjacent radial paths is 18°, and the distance d between adjacent adsorption holes in each radial path is 2.4 mm. Since the dense splashing area of ​​the water droplets of the water-guided laser is close to the center, the adsorption hole group 403 as a whole presents a structural feature of dense inner circle and sparse outer circle. There are about 9 holes per square centimeter in the inner circle and about 4 holes per square centimeter in the outer circle. Therefore, the radial distribution of the adsorption hole group 403 can improve the adsorption effect of the inner circle under the same adsorption force, and ensure the splash suppression ability of the negative pressure adsorption disk 401 to a large extent.

[0036] Embodiment 2:

[0037] like Figure 3As shown, the radial rectification ring 202 is provided with an upper positioning groove 206 and a lower positioning groove 207. The diameter φ of the upper positioning groove 206 can be set to 24 mm, and a multi-specification optical window 204 with a thickness h1 of 4 mm can be installed inside. The unsupported pressure area of ​​the optical window 204 is 12.56 mm 2 , can withstand a maximum internal pressure of 40Mpa, meeting the working conditions of water-guided laser high-pressure jet. A sealing sheet 205 is arranged between the optical window 204 and the window block 201. A water jet nozzle 203 is installed in the lower positioning groove 207. The center of the water jet nozzle 203 can open a multi-specification fine cylindrical spray hole with a diameter of 200μm to meet the needs of different processing scenarios. Radial rectifying channels 208 are evenly arranged on the circumference of the radial rectifying ring 202. The diameter D1 of the radial rectifying channel 208 can be set to 1.5mm, and the number can be set to 6, which suppresses the vortex above the water jet nozzle 203 and the uneven velocity distribution, thereby achieving effective rectification and generating a high-pressure jet with a stable interface and strong bundling.

[0038] like Figure 4 As shown, the negative pressure adsorption disc 401 is connected to the coupling cavity base 301 by threads; a second water outlet 402 is provided in the center of the negative pressure adsorption disc 401, and a structural adsorption hole group 403 is provided on the lower end surface. The diameters of the holes in the adsorption hole group 403 are equal, and D2 can be set to 1.5 mm. An adsorption chamber 404 is provided above to collect splashing water droplets and process water mist and transport them to the adsorption pipeline 405. The height h2 of the adsorption chamber can be set to 4 mm to ensure sufficient liquid absorption flow; the adsorption pipeline 405 has a diameter of 4 mm and is provided on the circumference of the negative pressure adsorption disc and connected to the vacuum generator.

[0039] like Figure 5 As shown, the structural adsorption hole group 403 on the lower end face of the negative pressure adsorption disk 401 is radially distributed with the second water outlet 402 as the center, and the angle θ between two adjacent radial paths can be set to 18°-24°, and the distance d between adjacent adsorption holes in each radial path can be set to 4.8mm. Since the dense area of ​​water droplet splashing in the water-guided laser is close to the center, the adsorption hole group 403 as a whole presents a structural feature of dense inner circle and sparse outer circle. There are about 9 holes per square centimeter in the inner circle and about 4 holes per square centimeter in the outer circle. Therefore, the radial distribution of the adsorption hole group 403 can improve the adsorption effect of the inner circle under the same adsorption force, and ensure the splash suppression ability of the negative pressure adsorption disk 401 to a large extent.

[0040] Embodiment 3:

[0041] For an active adsorption-type water-guided laser jet splash suppression device, the operating steps for suppressing water droplet splashing during water-guided laser processing are as follows:

[0042] The following steps are involved:

[0043] 1) Connect the high-pressure water pipe to the high-pressure water inlets 102 on both sides of the coupling chamber upper shell 101 to ensure good sealing inside the water chamber. Connect the vacuum generator to the adsorption pipeline 405 of the negative pressure adsorption disk 401 to ensure reliable pipeline connection.

[0044] 2) Open the water pipe valve, continue to pass high-pressure water with stable pressure, and check whether there is water leakage at the interface. Wait until the high-pressure water completely fills the coupling chamber upper shell 101 and the coupling chamber base 301. Observe from the bottom of the coupling chamber base 301 that a water jet is ejected from the water jet nozzle 203. If the surface of the water jet is smooth, the jet is stable and tight, and the bundle is strong, it means that the fine jet has met the conditions for water-light coupling, and the next step can be performed.

[0045] 3) Turn on the vacuum generator and wait for the pressure pointer on the vacuum generator to remain stable.

[0046] 4) After ensuring that the laser can enter the interior through the light inlet 103 and completely enter the water jet nozzle 203, turn on the laser with a set power, and the device will generate a fine water beam with energy, which can be used to process the workpiece. The splash and water mist generated by the processing will be continuously extracted by the negative pressure adsorption plate 401.

Claims

1. An active adsorption type water-guided laser jet splash suppression device, characterized in that: It comprises a coupling cavity upper shell (101), a coupling cavity base (301) is installed below the coupling cavity upper shell (101), radial rectification modules (2) are installed inside the coupling cavity upper shell (101) and the coupling cavity base (301), and a negative pressure adsorption disk (401) is installed below the coupling cavity base (301); The coupling cavity upper shell (101) is provided with a high-pressure water inlet (102), and the high-pressure water inlet (102) is symmetrically distributed on both sides. A light inlet (103) is provided at the center of the coupling cavity upper shell (101) for passing laser light. A first water outlet (302) is provided at the center of the coupling cavity base (301) for passing jets. A rectifying ring retaining groove (303) is provided at the center of the upper end surface of the coupling cavity base (301) for positioning the radial rectifying ring (202). An outer ring sealing groove (304) and an inner ring sealing groove (305) are provided at the upper end surface of the coupling cavity base (301) for placing a sealing ring. The coupling cavity base (301) is positioned with the coupling cavity upper shell (101) through a positioning step on the upper end surface, and is connected to the coupling cavity upper shell (101) through a thread. The coupling cavity base (301) and the coupling cavity upper shell (101) are clamped to form a sealed high-pressure water cavity. The radial rectification module (2) comprises a window pressing block (201), and the window pressing block (201) is positioned by a step below the light inlet hole (103); a radial rectification ring (202) is installed between the window pressing block (201) and the coupling cavity base (301); The negative pressure adsorption disk (401) is connected to the coupling cavity base (301) via threads; a second water outlet (402) is provided at the center of the negative pressure adsorption disk (401), and a structural adsorption hole group (403) is provided on the lower end surface; the structural adsorption hole group (403) on the lower end surface of the negative pressure adsorption disk (401) is radially distributed with the second water outlet (402) as the center, the angle θ between two adjacent radial paths is set to 18° to 24°, and the distance d between adjacent adsorption holes in each radial path is set to 2.4 mm to 4.8 mm; The diameters of the holes in the adsorption hole group (403) are equal, and D2 is set to 1mm-1.5mm. An adsorption chamber (404) is set on the top to collect sputtered water droplets and processed water mist and transport them to the adsorption pipeline (405); the height h2 of the adsorption chamber is set to 2mm-4mm; the diameter of the adsorption pipeline (405) is 2mm-4mm, and it is set on the circumference of the negative pressure adsorption disk and connected to the vacuum generator.

2. The active adsorption type water-guided laser jet splash suppression device according to claim 1 is characterized in that: The adsorption hole group (403) as a whole presents a structural feature of dense inner circle and sparse outer circle; there are 9 holes per square centimeter in the inner circle and 4 holes per square centimeter in the outer circle.

3. The active adsorption type water-guided laser jet splash suppression device according to claim 1 is characterized in that: The radial rectification ring (202) is provided with an upper positioning groove (206) and a lower positioning groove (207); an optical window (204) is installed inside the upper positioning groove (206); a sealing sheet (205) is provided between the optical window (204) and the window pressing block (201); a water jet nozzle (203) is installed in the lower positioning groove (207), a thin cylindrical spray hole is provided at the center of the water jet nozzle (203), and radial rectification channels (208) are evenly arranged on the circumference of the radial rectification ring (202).

4. The active adsorption type water-guided laser jet splash suppression device according to claim 3 is characterized in that: The diameter φ of the upper positioning groove (206) is set to 24mm-30mm, and a multi-specification optical window (204) with a thickness h1 of 4mm-6mm is installed inside; the unsupported pressure area of ​​the optical window (204) is 12.56mm 2 -28.26mm 2 , can withstand a maximum internal pressure of 40Mpa.

5. The active adsorption type water-guided laser jet splash suppression device according to claim 3 is characterized in that: A water jet nozzle (203) is installed in the lower positioning groove (207), and a fine cylindrical spray hole with a diameter of 50 μm-200 μm and multiple specifications is opened in the center of the water jet nozzle (203).

6. The active adsorption type water-guided laser jet splash suppression device according to claim 3 is characterized in that: The diameter D1 of the radial rectification channel (208) is set to 1.5 mm-3 mm, and the number is set to 6-8, so as to suppress the vortex and uneven velocity distribution above the water jet nozzle (203), thereby achieving effective rectification.

7. A method for using an active adsorption type water-guided laser jet splash suppression device, characterized in that: Here are the steps: The first step: connect the high-pressure water pipe to the high-pressure water inlets (102) on both sides of the coupling chamber upper shell (101) to ensure good sealing inside the water chamber; connect the vacuum generator to the adsorption pipeline (405) of the negative pressure adsorption disk (401) to ensure reliable pipeline connection; Step 2: Open the water pipe valve, continue to introduce high-pressure water with stable pressure, and check whether there is water leakage at the interface. Wait until the high-pressure water completely fills the coupling chamber upper shell (101) and the coupling chamber base (301). Observe from the bottom side of the coupling chamber base (301) that a water jet is ejected from the water jet nozzle (203); when the surface of the water jet is smooth, the jet is stable and tight, and the bundle is strong, it means that the fine jet has met the conditions for water-light coupling, and the next step of operation is carried out; Step 3: Turn on the vacuum generator and wait for the pressure pointer on the vacuum generator to remain stable; Step 4: After ensuring that the laser enters the interior through the light inlet (103) and completely enters the water jet nozzle (203), turn on the laser with a set power, and the device will generate a fine water beam with energy for processing the workpiece. At this time, the splash and water mist generated by the processing will be continuously extracted by the negative pressure adsorption plate (401).

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