A device and method for laser processing of cemented carbide tool edge strengthening

Abstract

A device and method for laser processing of cemented carbide tool edge strengthening, which relates to the field of laser strengthening processing technology. The present invention is to solve the problem of long experimental cycle and low precision caused by the lack of existing laser processing strengthening experimental equipment. The equipment includes a water trough, a tool clamping mechanism, a drain, an optical path box assembly and a laser. The water trough is arranged on a base, the tool clamping mechanism is fixed in the water trough, the laser, the optical path box assembly and the drain are fixed on the Z-axis moving plate from top to bottom, the Z-axis moving plate is arranged on the Y-axis moving plate, the Y-axis moving plate is arranged on the Y-axis fixed seat, the high-speed camera and the infrared thermal imager are respectively fixed on the Z-axis moving plate, and are respectively arranged on both sides of the optical path box assembly. The method includes installing the tool; aligning the laser; and laser processing strengthening. The present invention is used for laser processing strengthening.

Description

Technical Field

[0001] The invention relates to the technical field of laser strengthening processing, and in particular to a device and a method for strengthening the cutting edge of a cemented carbide tool during laser processing. Background Art

[0002] In recent years, with the continuous development of science and technology, the promotion and application of light alloys such as titanium alloys, various new tool structures and materials have emerged, which have put forward new challenges and requirements for cutting processing. From the perspective of the economic benefits of titanium alloy processing, cemented carbide is still the main cutting tool material in titanium alloy processing. Therefore, it is of great research significance to improve the friction state between the tool and the workpiece, reduce friction, reduce cutting force, reduce cutting heat generation, and extend the service life of cemented carbide tools. Reducing cutting temperature and reducing tool wear are of great significance to the efficient cutting of titanium alloy materials.

[0003] Tool wear is a common phenomenon in the material cutting process. Tool wear mainly occurs on the rake face and flank face of the cutting tool. The main cause of rake face wear is the sliding friction of the chip on the rake face, which forms high temperature and high pressure, resulting in crater wear near the cutting edge of the rake face. The main cause of flank face wear is the friction between the newly processed surface of the workpiece and the flank face. Therefore, some people have proposed to apply surface microtexture to the surface of the tool to improve the cutting performance of the tool during the cutting process.

[0004] The main processing methods for tool surface microtexturing are: EDM technology, photolithography technology and laser processing technology. Among them, laser processing technology has the advantages of high power density, good processing controllability, fast processing speed and high processing accuracy, and is widely used in various fields of manufacturing. Laser processing technology is also the most widely used method in tool surface microtexturing reported so far.

[0005] Laser processing technology will have a certain impact on the organizational properties of materials, and then affect the mechanical properties of materials. In addition, when processing cemented carbide micro-textures, lasers with different parameters will have different heat treatment effects on cemented carbide materials, further affecting the organizational properties of materials. As an emerging processing method, laser processing technology has an increasingly wide range of applications, such as surface modification, surface strengthening, surface cladding, etc. Research on the impact of laser processing technology on the organizational properties of cemented carbide will provide a useful reference for tool processing and preparation technology. Summary of the invention

[0006] In order to solve the problem that the existing laser processing strengthening experimental equipment is vacant, resulting in a long experimental cycle and low precision, the present invention further proposes a laser processing cemented carbide tool edge strengthening device and method.

[0007] The technical solution adopted by the present invention to solve the above technical problems is:

[0008] A device for laser processing hard alloy tool edge strengthening includes a water trough, a tool clamping mechanism, a flow guider, an optical path box assembly and a laser. The water trough is arranged on a base and moves along the X-axis direction of the base. The tool clamping mechanism is fixed in the water trough. The laser, the optical path box assembly and the flow guider are fixed on a Z-axis moving plate in sequence from top to bottom. The Z-axis moving plate is arranged on a Y-axis moving plate and moves along the Z-axis direction of the Y-axis moving plate. The Y-axis moving plate is arranged on a Y-axis fixed seat and moves along the Y-axis direction of the Y-axis fixed seat. A high-speed camera and an infrared thermal imager are respectively fixed on the Z-axis moving plate and are respectively arranged on both sides of the optical path box assembly.

[0009] Furthermore, the laser, the optical path box assembly and the flow guider are coaxially arranged in the vertical direction.

[0010] Furthermore, a drain outlet is provided on the front end surface of the water tank, and a lifting baffle is provided in the drain outlet.

[0011] Furthermore, the tool clamping mechanism includes a tool clamping spring, a rotating shaft and a fixed support seat, the fixed support seat is fixedly connected in the water tank, one end of the rotating shaft is connected to the output shaft of the rotating shaft motor, the rotating shaft motor is fixedly connected to the fixed support seat, and the other end of the rotating shaft is fixedly connected to the rotary motor, the bottom of the tool clamping spring is connected to the motor shaft of the rotary motor, and the axial direction of the tool clamping spring is arranged perpendicular to the axial direction of the rotating shaft.

[0012] Furthermore, the optical path box assembly includes an outer box body, a focusing mirror, a polarizer, a half-wave plate, an SVR, a beam splitter, two quarter-wave plates and six plane mirrors, and the first plane mirror, the half-wave plate, the second plane mirror, the polarizer, the third plane mirror, the first quarter-wave plate, the SVR, the second quarter-wave plate, the beam splitter, the fourth plane mirror, the fifth plane mirror, the sixth plane mirror and the focusing mirror are arranged in the outer box body in sequence from first to last, and the light inlet and the light outlet of the outer box body are coaxially arranged.

[0013] Furthermore, the optical path box assembly also includes a photosensitive diode, which is arranged on one side of the beam splitter.

[0014] Furthermore, the high-speed camera lens of the high-speed camera and the infrared thermal imager lens of the infrared thermal imager are both arranged in the outer box and on both sides of the focusing lens, and the high-speed camera lens and the infrared thermal imager lens are both arranged towards the light outlet of the outer box.

[0015] Furthermore, a CCD photoelectric signal sensor is provided on one side of the high-speed camera lens, and an infrared signal sensor is provided on one side of the infrared thermal imager lens.

[0016] A method for laser processing of cemented carbide tool edge strengthening comprises the following steps:

[0017] Step 1: Install the tool: Install the tool into the tool clamp spring, and adjust the tool surface to a horizontal position through the rotation of the tool clamp spring and the rotating shaft;

[0018] Step 2: Align the laser: adjust the laser head to the blade surface by moving the water tank along the X-axis, the Y-axis moving plate along the Y-axis, and the Z-axis moving plate along the Z-axis, adjust the focusing lens to focus the laser on the blade surface, and adjust the high-speed camera and infrared thermal imager to align the high-speed camera lens and the infrared thermal imager lens to the processing position;

[0019] Step 3: Laser processing strengthening: Open the water flow in the diverter, and after the water flow stabilizes, launch the laser to start strengthening.

[0020] Furthermore, the laser is always kept vertical during the machining and strengthening process, and a dot matrix is ​​formed on the cutting edge of the tool to form a micro texture.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. This equipment adopts a five-axis linkage structure, with the freedom mostly concentrated on the tool. It can process complex tool edges with high freedom.

[0023] 2. Radially polarized laser is obtained through optical elements to solve the problem that the polarization of laser directly emitted by general lasers is not conducive to processing.

[0024] 3. Laser, the emitted laser always remains vertical, with stable structure, high reliability and high safety.

[0025] 4. The drain outlet of the sink is equipped with a lifting plate to control the water storage level at different speeds of the knife surface. It can perform water spraying and immersion processing, that is, a design that combines water spraying and water storage, with strong adaptability.

[0026] 5. The laser power is adjustable, the photodiode provides laser parameters, the high-speed camera and infrared thermal imager can record the processing status in real time and provide reliable data. The experimental analysis value is very high and the exploration is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a structural schematic diagram of the optical path box assembly 5 of the present invention;

[0029] Figure 3 It is a structural schematic diagram of the tool clamping mechanism 3 in the present invention;

[0030] Figure 4It is a schematic structural diagram of the flow diverter 4 in the present invention. DETAILED DESCRIPTION

[0031] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0032] Specific implementation method 1: Combination Figures 1 to 4 The present embodiment is described. The device for strengthening the cutting edge of a cemented carbide tool by laser processing described in the present embodiment includes a water trough 1, a tool clamping mechanism 3, a flow diverter 4, an optical path box assembly 5 and a laser 8. The water trough 1 is arranged on a base and moves along the X-axis direction of the base. The tool clamping mechanism 3 is fixedly connected in the water trough 1. The laser 8, the optical path box assembly 5 and the flow diverter 4 are fixedly connected to a Z-axis moving plate 9 in sequence from top to bottom. The Z-axis moving plate 9 is arranged on a Y-axis moving plate 10 and moves along the Z-axis direction of the Y-axis moving plate 10. The Y-axis moving plate 10 is arranged on a Y-axis fixed seat 7 and moves along the Y-axis direction of the Y-axis fixed seat 7. A high-speed camera and an infrared thermal imager are respectively fixedly connected to the Z-axis moving plate 9 and are respectively arranged on both sides of the optical path box assembly 5.

[0033] The main function of the invention is to perform laser strengthening on the cutting edge of cemented carbide tools and record the process phenomena for analysis.

[0034] In the present invention, in order to better explain the structure and installation relationship of the five-axis laser processing hard alloy tool edge equipment, a spatial coordinate system is established for the five-axis laser processing equipment, and the X-axis is the horizontal X-axis direction (that is, to Figure 1 The water tank 1 is in the feeding direction of the worktable, and the Y axis is the horizontal Y axis direction (that is, to Figure 1 The Y axis is the direction in which the moving plate 10 moves in translation), and the Z axis is the vertical direction (i.e. Figure 1 The Z-axis moving plate moves in the direction of 9).

[0035] The diverter 4 adopts a three-dimensional symmetrical water entry, so that the water flow falls vertically and stably.

[0036] The flow guider 4 includes a lower bottom plate 31, an outer sleeve 32, an inner sleeve 33, a water outlet 28, three partition plates 29 and three water inlets 30. The outer sleeve 32 and the inner sleeve 33 are coaxially fixed to the upper end surface of the lower bottom plate 31. The inner sleeve 33 is arranged on the inner side of the outer sleeve 32. Three partition plates 29 are evenly fixed between the outer sleeve 32 and the inner sleeve 33. Each partition plate 29 is respectively arranged in the radial direction. The three partition plates 29 separate the outer sleeve 32 from the inner sleeve 33. 3 is divided into three transition chambers, three drainage grooves 34 are evenly distributed on the upper end surface of the lower bottom plate 31, each drainage groove 34 is respectively arranged between a transition chamber and the inner side of the inner sleeve 33, connecting the transition chamber with the inner side of the inner sleeve 33, three water inlets 30 are evenly distributed on the side wall of the outer sleeve 32, each water inlet 30 is respectively connected to a transition chamber, and a water outlet 28 is provided in the middle of the lower bottom plate 31, and the water outlet 28 is arranged on the inner side of the inner sleeve 33.

[0037] The tool clamping mechanism 3 is placed in the water tank 1 and waterproofed.

[0038] Specific implementation method 2: Combination Figures 1 to 4 To explain this embodiment, the laser 8, the optical path box assembly 5 and the flow guider 4 described in this embodiment are coaxially arranged in the vertical direction. The undisclosed technical features in this embodiment are the same as those in the first embodiment.

[0039] Specific implementation method three: Combination Figures 1 to 4 To explain this embodiment, a drain port is provided on the front end surface of the water tank 1 in this embodiment, and a lifting baffle 2 is provided in the drain port. The undisclosed technical features in this embodiment are the same as those in the first embodiment.

[0040] The drain outlet of the water tank 1 is provided with a lifting baffle 2, which can control the water level to pass through the knife surface at different speeds, so that water spray processing and immersion processing can be performed. The lifting baffle 2 can control the water level to pass through the knife surface at different speeds: when the water level is below the knife surface, the water flow of the diverter 4 is opened to perform water spray processing; when the water level is above the knife surface at a certain speed, the water flow of the diverter 4 is closed to perform immersion processing.

[0041] Specific implementation method four: Combination Figures 1 to 4 This embodiment is described. The tool clamping mechanism 3 in this embodiment includes a tool clamp spring 25, a rotating shaft 26 and a fixed support seat 27. The fixed support seat 27 is fixedly connected in the water tank 1. One end of the rotating shaft 26 is connected to the output shaft of the rotating shaft motor. The rotating shaft motor is fixedly connected to the fixed support seat 27. The other end of the rotating shaft 26 is fixedly connected to the rotary motor. The bottom of the tool clamp spring 25 is connected to the motor shaft of the rotary motor. The axial direction of the tool clamp spring 25 is perpendicular to the axial direction of the rotating shaft 26. The undisclosed technical features in this embodiment are the same as those in the first specific embodiment.

[0042] A workbench is provided in the water tank 1 , and a tool clamping mechanism 3 is arranged on the workbench, wherein a fixed support seat 27 is fixedly connected to the workbench.

[0043] Specific implementation method five: Combination Figures 1 to 4 This embodiment is described. The optical path box assembly 5 described in this embodiment includes an outer box, a focusing mirror 13, a polarizing plate 15, a half-wave plate 16, an SVR 18, a beam splitter 20, two quarter-wave plates 14 and six plane mirrors 17. The first plane mirror 17, the half-wave plate 16, the second plane mirror 17, the polarizing plate 15, the third plane mirror 17, the first quarter-wave plate 14, the SVR 18, the second quarter-wave plate 14, the beam splitter 20, the fourth plane mirror 17, the fifth plane mirror 17, the sixth plane mirror 17 and the focusing mirror 13 are sequentially arranged in the outer box from the first to the last, and the light inlet and the light outlet of the outer box are coaxially arranged. The undisclosed technical features in this embodiment are the same as those in the first embodiment.

[0044] After the laser enters the optical path box, it passes through the optical components of the first plane mirror 17, the half-wave plate 16, the second plane mirror 17, the polarizer 15, the third plane mirror 17, the first quarter-wave plate 14, the SVR 18, the second quarter-wave plate 14, the beam splitter 20, the fourth plane mirror 17, the fifth plane mirror 17, the sixth plane mirror 17 and the focusing mirror 13 to be converted into radial polarized light with better processability.

[0045] The laser obtains linearly polarized light after passing through the half-wave plate 16 and the polarizer 15, and then obtains radially polarized light after passing through the first quarter-wave plate 14, the SVR 18, and the second quarter-wave plate 14.

[0046] The laser beam emitted by the laser 8 is reflected multiple times by the plane mirror 17, and passes through the half-wave plate 16, the polarizer 15, the quarter-wave plate 14, the SVR 18, the quarter-wave plate 14, the beam splitter 20, and the focusing mirror 13 in sequence, and finally acts on the blade surface in the water flow of the guide device 4.

[0047] Specific implementation method six: Combination Figures 1 to 4 To explain this embodiment, the optical path box assembly 5 in this embodiment further includes a photodiode 19, and the photodiode 19 is disposed on one side of the beam splitter 20. The undisclosed technical features in this embodiment are the same as those in the fifth embodiment.

[0048] The energy of the emitted laser can be adjusted by rotating the half-wave plate 16 ; the beam splitter 20 divides the laser into equal parts, and the emitted laser synchronization data can be measured by the photodiode 19 .

[0049] Specific implementation method seven: Combination Figures 1 to 4To explain this embodiment, the high-speed camera lens 11 of the high-speed camera and the infrared thermal imager lens 22 of the infrared thermal imager described in this embodiment are both arranged in the outer box body and arranged on both sides of the focusing lens 13. The high-speed camera lens 11 and the infrared thermal imager lens 22 are both arranged toward the light outlet of the outer box body. The undisclosed technical features in this embodiment are the same as those in the specific embodiment 5.

[0050] Specific implementation method eight: Combination Figures 1 to 4 To explain this embodiment, a CCD photoelectric signal sensor 12 is provided on one side of the high-speed camera lens 11, and an infrared signal sensor 21 is provided on one side of the infrared thermal imager lens 22. The undisclosed technical features in this embodiment are the same as those in the seventh embodiment.

[0051] Specific implementation method nine: Combination Figures 1 to 4 The present embodiment is described. The method for strengthening the cutting edge of a laser-processed cemented carbide tool described in the present embodiment comprises the following steps:

[0052] Step 1: Install the tool: Install the tool into the tool clamp spring 25, and adjust the tool surface 23 to a horizontal position by rotating the tool clamp spring 25 and the rotating shaft 26;

[0053] Step 2: Aligning the laser: by moving the water tank 1 along the X-axis, the Y-axis moving plate 10 along the Y-axis, and the Z-axis moving plate 9 along the Z-axis, the laser head of the laser 8 is adjusted to align with the blade surface 23, and the focusing lens 13 is adjusted to focus the laser on the blade surface 23. At the same time, the high-speed camera and the infrared thermal imager are adjusted to align the high-speed camera lens 11 and the infrared thermal imager lens 22 with the processing position;

[0054] Step 3: Laser processing strengthening: open the water flow in the diverter 4, and after the water flow stabilizes, emit laser to start strengthening.

[0055] The high-speed camera and the infrared thermal imager will always focus on the laser focal point after a one-time adjustment, and shoot the processing status in real time.

[0056] The central wavelength of the laser beam of the laser 8 is 1064nm, the frequency is 20-80kHz, and the maximum power is 50W.

[0057] The diameter of the light spot of the laser 8 is d=50 μm.

[0058] The laser action time is 20-40ns.

[0059] Specific implementation method ten: Combination Figures 1 to 4 To explain this embodiment, the laser 8 in this embodiment is always kept vertical during the machining and strengthening process, and a dot matrix is ​​formed on the cutting edge of the tool to form a micro texture.

[0060] The undisclosed technical features in this embodiment are the same as those in the ninth embodiment.

[0061] The laser 8 is controlled by five-axis linkage to produce a dot matrix on the cutting edge of the tool to form a micro texture. The laser 8 is always kept vertical, and the freedom is mostly concentrated on the tool, so that complex tool edges can be processed.

[0062] Embodiment 1:

[0063] The specific steps of implementing the method of strengthening the cutting edge of cemented carbide tools by water jet laser processing are as follows:

[0064] Step 1: Install the tool handle 24 into the tool clamp spring 25, and adjust the tool surface 23 to a horizontal position by rotating the tool clamp spring 25 and the rotating shaft 26;

[0065] Step 2: by moving the water tank 1 along the X-axis, the Y-axis moving plate 10 along the Y-axis, and the Z-axis moving plate 9 along the Z-axis, the laser light path is aligned with the initial processing position of the cutting edge, and the focusing mirror 13 is adjusted to focus on the blade surface 23;

[0066] Step 3: Turn on the high-speed camera and infrared thermal imager and focus them on the laser focus simultaneously;

[0067] Step 4: Open the water flow in the drainage device 4;

[0068] Step 5: After the water flow stabilizes, the laser is fired to start processing, and the array processing is completed through five-axis linkage.

[0069] Embodiment 2:

[0070] The specific steps for implementing the edge strengthening of cemented carbide tools in water immersion laser machining are as follows:

[0071] Step 1: Install the tool handle 24 into the tool clamp spring 25, and adjust the tool surface 23 to a horizontal position by rotating the tool clamp spring 25 and the rotating shaft 26;

[0072] Step 2: Align the laser light path to the initial processing position of the cutting edge by moving the water tank 1 along the X-axis, the Y-axis moving plate 10 along the Y-axis, and the Z-axis moving plate 9 along the Z-axis, and adjust the focusing mirror 13 to focus on the blade surface 23;

[0073] Step 3: Turn on the high-speed camera and infrared thermal imager and focus them on the laser focus simultaneously;

[0074] Step 4: Open the water flow in the diverter 4, adjust the lifting baffle 2 so that the water level in the water tank 1 passes the knife surface at a certain speed, and then close the water flow;

[0075] Step 5: After the water surface stabilizes, the laser is launched to start processing, and the array processing is completed through five-axis linkage.

[0076] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A laser processing device for strengthening the cutting edge of a cemented carbide tool, characterized in that: It comprises a water tank (1), a tool clamping mechanism (3), a flow guide (4), an optical path box assembly (5) and a laser (8); the water tank (1) is arranged on a base and moves along the X-axis direction of the base; the tool clamping mechanism (3) is fixedly connected in the water tank (1); the laser (8), the optical path box assembly (5) and the flow guide (4) are fixedly connected to a Z-axis moving plate (9) in sequence from top to bottom; the Z-axis moving plate (9) is arranged on a Y-axis moving plate (10) and moves along the Z-axis direction of the Y-axis moving plate (10); the Y-axis moving plate (10) is arranged on a Y-axis fixing seat (7) and moves along the Y-axis direction of the Y-axis fixing seat (7); a high-speed camera and an infrared thermal imager are respectively fixedly connected to the Z-axis moving plate (9) and are respectively arranged on both sides of the optical path box assembly (5); The optical path box assembly (5) comprises an outer box body, a focusing mirror (13), a polarizing plate (15), a half-wave plate (16), an SVR (18), a beam splitter (20), two quarter-wave plates (14) and six plane mirrors (17), wherein the first plane mirror (17), the half-wave plate (16), the second plane mirror (17), the polarizing plate (15), the third plane mirror (17), the first quarter-wave plate (14), the SVR (18), the second quarter-wave plate (14), the beam splitter (20), the fourth plane mirror (17), the fifth plane mirror (17), the sixth plane mirror (17) and the focusing mirror (13) are sequentially arranged in the outer box body from the beginning to the end, and the light inlet and the light outlet of the outer box body are coaxially arranged; The optical path box assembly (5) further comprises a photosensitive diode (19), wherein the photosensitive diode (19) is arranged on one side of the beam splitter (20); The laser (8), the optical path box assembly (5) and the flow guider (4) are coaxially arranged in a vertical direction; The front end surface of the water tank (1) is provided with a drainage outlet, and a lifting baffle (2) is provided in the drainage outlet.

2. The device for laser processing hard alloy tool edge strengthening according to claim 1, characterized in that: The tool clamping mechanism (3) comprises a tool clamping spring (25), a rotating shaft (26) and a fixed support seat (27); the fixed support seat (27) is fixedly connected in the water tank (1); one end of the rotating shaft (26) is connected to the output shaft of the rotating shaft motor; the rotating shaft motor is fixedly connected to the fixed support seat (27); the other end of the rotating shaft (26) is fixedly connected to the rotary motor; the bottom of the tool clamping spring (25) is connected to the motor shaft of the rotary motor; the axial direction of the tool clamping spring (25) is arranged perpendicular to the axial direction of the rotating shaft (26).

3. The device for laser processing hard alloy tool edge strengthening according to claim 1, characterized in that: The high-speed camera lens (11) of the high-speed camera and the infrared thermal imager lens (22) of the infrared thermal imager are both arranged in the outer box body and arranged on both sides of the focusing lens (13). The high-speed camera lens (11) and the infrared thermal imager lens (22) are both arranged towards the light outlet of the outer box body.

4. The laser processing device for strengthening the cutting edge of a cemented carbide tool according to claim 3, characterized in that: A CCD photoelectric signal sensor (12) is provided on one side of the high-speed camera lens (11), and an infrared signal sensor (21) is provided on one side of the infrared thermal imager lens (22).

5. A method for strengthening a cutting edge strengthening device for laser machining a cemented carbide tool according to any one of claims 1 to 4, characterized in that: The method comprises the following steps: Step 1: Install the tool: Install the tool into the tool clamp spring (25), and adjust the tool surface (23) to a horizontal position by rotating the tool clamp spring (25) and the rotating shaft (26); Step 2: Aligning the laser: by moving the water tank (1) along the X-axis, the Y-axis moving plate (10) along the Y-axis, and the Z-axis moving plate (9) along the Z-axis, the laser head of the laser (8) is adjusted to align with the blade surface (23), and the focusing mirror (13) is adjusted to focus the laser on the blade surface (23). At the same time, the high-speed camera and the infrared thermal imager are adjusted so that the high-speed camera lens (11) and the infrared thermal imager lens (22) are aligned with the processing position; Step 3: Laser processing strengthening: open the water flow in the diverter (4), and after the water flow stabilizes, emit the laser to start strengthening.

6. The method for strengthening the cutting edge of a laser-processed cemented carbide tool according to claim 5, characterized in that: The laser (8) is always kept vertical during the machining and strengthening process, and produces a dot matrix on the cutting edge of the tool to form a micro texture.

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