Welding device of cubic boron nitride cutter and welding method thereof

Abstract

The invention relates to the technical field of welding, in particular to a cubic boron nitride cutter welding device and a welding method thereof.The cubic boron nitride cutter welding device comprises a vacuum welding furnace body, a furnace shell is arranged in the vacuum welding furnace body, a hearth is arranged in the furnace shell, a containing table is arranged in the hearth, and the cubic boron nitride cutter welding device further comprises a rotating assembly, a clamping assembly and a vibration assembly; the rotating assembly comprises a rotating part rotationally arranged on the containing table, the clamping assembly comprises two side clamping parts and is used for fixing the cubic boron nitride cutter to be welded, the rotating part can be driven to rotate through high-temperature steam, meanwhile, high-frequency vibration is generated through a vibration part, the welding position vibrates while rotating, and the welding precision is improved. The welding flux can be evenly distributed at the welding position, meanwhile, overflow of the welding flux can be prevented through fixing of the upper clamping piece and the side clamping piece, and the problems that the welding flux is not evenly distributed and the welding flux is prone to overflow are solved.

Description

Technical Field

[0001] The invention relates to the technical field of welding, and in particular to a welding device and a welding method for a cubic boron nitride tool. Background Art

[0002] Cubic boron nitride (cBN) is a hard material bonded by covalent bonds and is difficult to be wetted by ordinary liquid metals. Traditional welding methods such as electroplating and sintering cannot meet the thermal stability requirements of cubic boron nitride.

[0003] Therefore, vacuum brazing technology is needed. By using specific active brazing filler metals, such as Ag-Cu-Ti or Cu-Sn-Ti alloys, the active element Ti can react chemically with cubic boron nitride (cBN) to achieve a firm bond between the cubic boron nitride blade (cBN) and the metal substrate. However, during vacuum brazing, due to uneven distribution of the brazing filler metal, defects in the weld are likely to occur. Therefore, the tool needs to be rotated to achieve a uniform distribution of the brazing filler metal.

[0004] Although rotating the cubic boron nitride combination tool can make the solder evenly distributed to a certain extent, it cannot ensure that the solder flows to all positions of the weld. Therefore, there is still a certain uneven distribution. In addition, during the welding process, there is internal stress between the blade and the metal matrix. The existence of internal stress will make the tool insufficient in strength and the connection unstable. Summary of the invention

[0005] The purpose of the present invention is to provide a welding device and a welding method for a cubic boron nitride tool, which solve the problems of uneven distribution of solder and easy overflow of solder during welding of the cubic boron nitride tool.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A welding device for a cubic boron nitride tool comprises a vacuum welding furnace body, wherein a furnace shell is arranged in the vacuum welding furnace body, a furnace chamber is fixedly arranged in the furnace shell, a placing table is fixedly arranged in the furnace chamber, and further comprises:

[0008] A rotating assembly, the rotating assembly comprising a rotating member rotatably arranged on a placement table, a rotating shaft being fixedly arranged at the lower end of the rotating member, a fixing box being fixedly arranged at the lower side of the placement table, a connecting member located in the fixing box being fixedly arranged on the rotating shaft, and a plurality of transmission members located in the fixing box being fixedly arranged on the circumferential surface of the connecting member, for rotating the cubic boron nitride tool to be welded;

[0009] A clamping assembly, the clamping assembly comprising two side clamping members arranged on both sides of the rotating member, the two side clamping members are symmetrically distributed, and are used to fix the cubic boron nitride tool to be welded;

[0010] A vibration component is arranged inside the fixing box and is used to vibrate the cubic boron nitride tool to be welded.

[0011] Preferably, the rotating assembly includes a water storage member fixedly disposed on the furnace, and the upper side of the water storage member is connected to the fixed box through an exhaust pipe.

[0012] Preferably, a liquid inlet pipe is provided on one side of the water storage member, and a discharge pipe communicating with the outside is provided on one side of the fixing box, and the discharge pipe is located on a side of the fixing box away from the exhaust pipe.

[0013] Preferably, the clamping assembly also includes two first automatic telescopic columns arranged in the rotating member, and the opposite ends of the two first automatic telescopic columns are fixed with moving members, and the moving members are slidably connected to the rotating member. A connecting rod is provided at the upper end of each of the moving members, and each of the side clamping members is fixedly connected to the corresponding connecting rod.

[0014] Preferably, the rotating member is provided with a plurality of clearance grooves corresponding to the connecting rods, and the upper end of each connecting rod extends out of the corresponding clearance groove and can slide in the corresponding clearance groove.

[0015] Preferably, an upper clamping member is fixedly provided on the upper end of each side clamping member for covering the upper side of the cubic boron nitride tool, and optical sensors corresponding to the side clamping members are respectively provided on both sides of the rotating member for detecting the contact between the upper clamping member and the side clamping member and the welding point of the cubic boron nitride tool.

[0016] Preferably, each two adjacent transmission members form an active chamber with the fixing box and the connecting member, and each active chamber is provided with a plurality of vibrating members.

[0017] Preferably, a furnace door capable of closing the furnace shell and the furnace chamber is hingedly connected to one side of the vacuum welding furnace body, a control system is provided on one side of the vacuum welding furnace body, and the optical sensor and the first automatic telescopic column are electrically connected to the control system.

[0018] Preferably, a heating system electrically connected to the control system is provided inside the vacuum welding furnace body, the heating system includes a heating element arranged inside the furnace chamber, and a cooling system, a vacuum system and a gas charging and discharging system electrically connected to the control system are provided inside the vacuum welding furnace body.

[0019] A method for welding a cubic boron nitride tool comprises the following steps:

[0020] S1. Apply solder to the welding part of the metal substrate and place a cubic boron nitride blade, dry the solder, and remove the overflowed solder;

[0021] S2. Place the combined tool of the cubic boron nitride blade and the metal matrix on the rotating member, start the first automatic telescopic column, so that the side clamping member and the upper clamping member cover and clamp the weld;

[0022] S3. Heat and weld the solder and the weld using a heating system and a heating element while rotating and vibrating the tool;

[0023] S4. After welding is completed and cooled, open the furnace door and take out the welded tool.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. While welding the combined tool, the tool rotates, so that the solder distribution at the welding point is more uniform, which greatly reduces the defect rate at the tool welding point and increases the yield rate of the tool.

[0026] 2. Covering the welding point by the upper clamp and the side clamp can ensure that the solder at the welding point does not overflow during rotation, thereby ensuring that there is sufficient solder at the welding point. By removing the overflow solder after drying, the tightness of the side clamp and the upper clamp in contact with the welding point can be ensured, thereby preventing the welding of the welding point from being disturbed when there is moisture inside the furnace, ensuring that the stability of the welding quality can still be guaranteed even if the vacuum is insufficient and moisture remains.

[0027] 3. The side clamps, upper clamps and rotating parts are all made of materials with fast heat conduction, ensuring uniform temperature distribution during welding and rapid completion of welding.

[0028] 4. By arranging multiple vibrators inside each active chamber, high-frequency vibration can be achieved while the tool rotates, further improving the welding quality and effect, helping to release the internal stress inside the workpiece, thereby improving the stability and strength of the welding.

[0029] 5. By applying high-frequency vibration and rotation to the tool, its internal stress can be released. This method is more efficient than natural aging treatment, does not require long waiting times, and can achieve a quick furnace-out effect. The combination of tool rotation and vibration can ensure that the solder flows more evenly to all parts of the weld, thereby achieving a better welding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0032] Figure 2 This is a schematic diagram of the internal structure of the present invention after the furnace door is opened.

[0033] Figure 3 It is a stepped cutaway axonometric view of the present invention.

[0034] Figure 4 It is a schematic diagram of the internal structure of the furnace shell and furnace in the present invention.

[0035] Figure 5 This is a full-section main axonometric drawing of the present invention without the furnace shell and furnace.

[0036] Figure 6 It is a partially cutaway top axonometric view of the fixing box of the present invention.

[0037] Figure 7 It is a partially cutaway main axonometric view of the rotating part in the present invention.

[0038] Figure 8 It is an exploded view of the metal matrix and the cubic boron nitride blade in the present invention.

[0039] Fig. 9 It is an exploded view of the clamping assembly in the present invention.

[0040] In the figure: 1. Vacuum welding furnace body; 2. Furnace shell;

[0041] 3. furnace; 301. placement table;

[0042] 4. Rotating assembly; 401. Rotating member; 402. Rotating shaft; 403. Fixed box; 404. Connecting member; 405. Transmission member; 406. Water storage member; 407. Exhaust pipe; 408. Discharge pipe; 409. Liquid inlet pipe;

[0043] 5. Clamping assembly; 501. Side clamping member; 502. First automatic telescopic column; 503. Moving member; 504. Connecting rod; 505. Giving way groove; 506. Upper clamping member;

[0044] 6. Vibration assembly; 601. Active chamber; 602. Vibration element;

[0045] 7. Furnace door; 8. Control system;

[0046] 9. Heating system; 901. Heating element;

[0047] 10. Cooling system; 11. Vacuum system; 12. Filling and discharging system. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0049] Embodiment 1

[0050] Cubic boron nitride is a hard material bonded by covalent bonds and is difficult to be wetted by ordinary liquid metals. Traditional welding methods such as electroplating and sintering cannot meet the thermal stability requirements of cubic boron nitride.

[0051] Therefore, vacuum brazing technology is used. By using specific active brazing filler metals, such as Ag-Cu-Ti or Cu-Sn-Ti alloys, the active element Ti can react chemically with cubic boron nitride to achieve a firm bond between the cubic boron nitride blade and the metal matrix. However, during vacuum brazing, due to uneven distribution of the brazing filler metal, defects in the weld are likely to occur. Therefore, the tool needs to be rotated to achieve a uniform distribution of the brazing filler metal.

[0052] In order to solve the above technical problems, refer to the accompanying drawings of the specification Figures 1 to 9It can be seen that the adopted technical solution includes a vacuum welding furnace body 1, a furnace shell 2 is arranged in the vacuum welding furnace body 1, a furnace chamber 3 is fixedly arranged in the furnace shell 2, a placement table 301 is fixedly arranged in the furnace chamber 3, and also includes a rotating component 4 and a clamping component 5. The rotating component 4 includes a rotating member 401 rotatably arranged on the placement table 301, a rotating shaft 402 is fixedly arranged at the lower end of the rotating member 401, a fixed box 403 is fixedly arranged at the lower side of the placement table 301, a connecting member 404 located in the fixed box 403 is fixedly arranged on the rotating shaft 402, and a plurality of transmission members 405 located in the fixed box 403 are fixedly arranged on the circumferential surface of the connecting member 404, which are used to rotate the cubic boron nitride tool to be welded. The clamping assembly 5 includes two side clamping members 501 arranged on both sides of the rotating member 401, and the two side clamping members 501 are symmetrically distributed and are used to fix the cubic boron nitride tool to be welded. The rotating assembly 4 includes a water storage member 406 fixedly arranged on the furnace 3, and the upper side of the water storage member 406 is connected to the fixed box 403 through the exhaust pipe 407. A liquid inlet pipe 409 is arranged on one side of the water storage member 406, and a discharge pipe 408 connected to the outside is arranged on one side of the fixed box 403. The discharge pipe 408 is located on the side of the fixed box 403 away from the exhaust pipe 407. The clamping assembly 5 also includes two first automatic telescopic columns 502 arranged in the rotating member 401. The two first automatic telescopic columns 502 are The opposite ends of the column 502 are fixed with moving parts 503, and the moving parts 503 are slidably connected with the rotating part 401. The upper end of each moving part 503 is provided with a connecting rod 504, and each side clamping part 501 is fixedly connected with the corresponding connecting rod 504. The rotating part 401 is provided with a plurality of make-way grooves 505 corresponding to the connecting rods 504, and the upper end of each connecting rod 504 extends out of the corresponding make-way groove 505 and can slide in the corresponding make-way groove 505. The upper end of each side clamping part 501 is fixed with an upper clamping part 506 for covering the upper side of the cubic boron nitride tool. The rotating part 401 is provided with corresponding side clamping parts 501 on both sides. The optical sensor 507 is used to detect the contact between the upper clamping piece 506 and the side clamping piece 501 and the welding position of the cubic boron nitride tool. A furnace door 7 that can close the furnace shell 2 and the furnace chamber 3 is hingedly connected to one side of the vacuum welding furnace body 1. A control system 8 is arranged on one side of the vacuum welding furnace body 1. The optical sensor 507 and the first automatic telescopic column 502 are both electrically connected to the control system 8. A heating system 9 electrically connected to the control system 8 is arranged inside the vacuum welding furnace body 1. The heating system 9 includes a heating element 901 arranged inside the furnace chamber 3. A cooling system 10, a vacuum system 11 and a charging and discharging system 12 electrically connected to the control system 8 are arranged inside the vacuum welding furnace body 1.

[0053] When in use, first apply solder on the metal substrate. After the solder is applied, place the cubic boron nitride blade at the position to be welded, and then use existing drying equipment to dry the solder. After drying, remove the overflowed solder, and then place the assembled tool on the rotating part 401 in the vacuum welding furnace body 1.

[0054] Then the control system 8 controls the first automatic telescopic column 502 to contract, so that the first automatic telescopic column 502 drives the corresponding moving part 503 to move toward the axis of the rotating part 401, and the moving part 503 drives the corresponding connecting rod 504 to move, and the connecting rod 504 drives the corresponding side clamping part 501 and the upper clamping part 506 to move toward the axis of the rotating part 401, and the upper clamping part 506 can maintain close contact with the upper end face of the welding place between the metal substrate and the cubic boron nitride blade, and the side clamping part 501 can maintain close contact with the side face of the welding place between the metal substrate and the cubic boron nitride tool.

[0055] The first automatic telescopic column 502 continues to contract, and the side clamping member 501 and the upper clamping member 506 continue to move inward. When the upper clamping member 506 covers the welding position between the cubic boron nitride blade and the metal substrate and can ensure that the solder does not overflow after melting, the side clamping member 501 contacts and covers the welding position between the metal substrate and the cubic boron nitride blade, and can ensure that the solder does not overflow after melting, the optical sensor 507 sends a signal to the control system 8, so that the control system 8 controls the first automatic telescopic column 502 to stop contracting, and then closes the furnace door 7. The control system 8, the first automatic telescopic column 502, the optical sensor 507 and their connection methods are all prior art and will not be described in detail here.

[0056] The control system 8 controls the vacuum system 11 to evacuate the furnace 3 and the furnace shell 2. At the same time, the control system 8 controls the heating system 9 to heat the heating element 901. While evacuating, the furnace 3 and the furnace shell 2 are dehumidified by heating to prevent defects caused by moisture inside the welding joints. After the vacuuming and dehumidification are completed, the heating element 901 continues to work to continuously heat the inside of the furnace 3. The furnace 3 is a high-temperature resistant insulation material and has a certain insulation effect, so that the temperature between the outer wall of the furnace 3 and the inner wall of the furnace shell 2 is relatively low, and the side clamping member 501, the upper clamping member 506 and the rotating member 401 are all high-temperature resistant and fast heat conduction materials, which can achieve continuous and uniform heating of the solder. The heating system 9 and the heating element 901, the cooling system 10 and the vacuum system 11 and their connection methods are all prior art and will not be described in detail here.

[0057] When heating begins to reach a certain degree, since water is stored in the water storage member 406, the water begins to evaporate under the action of the high temperature inside the furnace 3, and the evaporated water vapor enters the fixed box 403 through the exhaust pipe 407, and the steam outlet of the exhaust pipe 407 is tilted to align with the transmission member 405, which can provide the transmission member 405 with the force required for rotation. Since the direction of the force released by the discharge of water vapor is consistent with the direction of the force required to rotate the transmission member 405, after the water vapor accumulates to a certain degree, the kinetic energy of the water vapor discharged is converted into mechanical energy for the rotation of the transmission member 405, and the water vapor enters different active chambers 601, and after the water vapor is filled in each active chamber 601, it begins to push the transmission member 405 to rotate along the axis of the rotating shaft 402. The transmission member 405 drives the connecting member 404 and the rotating shaft 402 to rotate. There is no gap between the upper end surface of the transmission member 405 and the upper side wall in the fixed box 403, and there is no gap between the lower end surface of the transmission member 405 and the lower side wall and the inner side wall in the fixed box 403. When the cubic boron nitride blade and the metal matrix are vacuum brazed, the rotation of the component tool is realized. Since the tool is rotated during vacuum brazing, the brazing material can be distributed more evenly, the tool after welding is more stable and has fewer defects. At the same time, the connecting member 404 can ensure the airtightness of the connection between the fixed box 403 and the rotating shaft 402, and can prevent steam or condensed water from being discharged through the connection between the rotating shaft 402 and the fixed box 403. The sealing technology is a prior art and will not be described in detail here.

[0058] In order to prevent metal oxidation and discharge the gas and impurities generated during the welding process, the control system 8 controls the operation of the gas charging and discharging system 12. The gas charging and discharging system 12 releases protective gas into the furnace 3 to prevent metal oxidation. At the same time, the gas generated during the welding process is discharged from the furnace 3 to avoid affecting the welding process. The gas charging and discharging system 12 and its connection method are all existing technologies and will not be described in detail here.

[0059] At the same time, as water vapor continues to enter the fixed box 403, the rotating shaft 402 and the transmission member 405 continue to rotate, and at the same time, excess water vapor is discharged to the outside through the exhaust pipe 408 to prevent the pressure in the fixed box 403 from being too high, and the liquid inlet pipe 409 on the water storage member 406 is connected to the external pressurized water delivery equipment, which can deliver water to the water storage member 406 and selectively deliver water with a higher temperature to facilitate the rapid evaporation of water. The water delivery equipment can provide a higher pressure to prevent the water or steam in the water storage member 406 from flowing back through the liquid inlet pipe 409. The water delivery equipment and its connection method with the liquid inlet pipe 409 are both existing technologies and will not be described in detail here to achieve continuous rotation.

[0060] While the combined tool is being welded, the tool rotates, so that the solder distribution at the welding point is more uniform, which greatly reduces the defect rate at the tool welding point and increases the yield rate of the tool. The upper clamp 506 and the side clamp 501 cover the welding point, which can ensure that the solder at the welding point does not overflow during rotation, thereby ensuring that the solder at the welding point is sufficient. By removing the overflow solder after drying, the tightness of the side clamp 501 and the upper clamp 506 when in contact with the welding point can be ensured, thereby preventing the welding at the welding point from being disturbed when there is moisture inside the furnace 3, thereby ensuring Even when the vacuum is insufficient and there is residual moisture, the stability of the welding quality can still be guaranteed, and the side clamping member 501, the upper clamping member 506 and the rotating member 401 are all made of materials with fast heat conduction, which ensures the uniformity of temperature distribution during welding and the rapid completion of welding. Through the provided liquid inlet pipe 409 and the discharge pipe 408, water is continuously transported into the water storage member 406, which can enable water vapor to be continuously generated and drive the transmission member 405 to rotate continuously. At the same time, the water vapor can be continuously discharged to the outside to prevent the internal pressure of the water storage member 406 from being too high, thereby fixing the flow direction of the water vapor and allowing the rotating member 401 to rotate continuously.

[0061] Embodiment 2

[0062] Although rotating the cubic boron nitride combination tool can make the solder evenly distributed to a certain extent, it cannot ensure that the solder flows to all positions of the weld. Therefore, there is still a certain uneven distribution. In addition, during the welding process, there is internal stress between the blade and the metal matrix. The existence of internal stress will make the tool insufficient in strength and the connection unstable.

[0063] In order to solve the above technical problems, based on the above embodiment 1, referring to the accompanying drawings of the specification Figures 1 to 9 It can be seen that the adopted technical solution includes a vibration component 6, which is arranged inside the fixed box 403 and is used to vibrate the cubic boron nitride tool to be welded. Each two adjacent transmission parts 405 form an active chamber 601 between the fixed box 403 and the connecting part 404, and each active chamber 601 is provided with multiple vibration parts 602.

[0064] When welding the combined tool, while the transmission part 405 rotates, the vibrating part 602 is set to be spherical and have a small surface friction coefficient, which can meet the requirement of small friction between the transmission part 405 and the connecting part 404 during movement, so that greater vibration can be generated after a collision, reducing the influence of friction on the vibration, achieving better vibration and transmission effects, and the transmission part 405 pushes the corresponding vibrating part 602 to move in the corresponding active chamber 601.

[0065] Since there are multiple vibrating members 602 in each active chamber 601, irregular rapid collisions can occur between each other, and irregular rapid collisions can also occur between the vibrating member 602 and the transmission member 405, between the vibrating member 602 and the connecting member 404, and between the vibrating member 602 and the fixed box 403, so high-frequency vibrations will be generated. The generated high-frequency vibrations will be transmitted to the rotating shaft 402, the vibration of the rotating shaft 402 will be transmitted to the rotating member 401, and the vibration of the rotating member 401 will be transmitted to the combined tool and the upper clamping member 506 and the side clamping member 501, so that high-frequency vibrations can occur at the welding point between the cubic boron nitride blade and the metal substrate.

[0066] And because the upper clamping member 506, the side clamping member 501 and the rotating member 401 cooperate with each other to clamp the welding part of the tool, the welding part can be vibrated synchronously with the above-mentioned components. The synchronous vibration cooperates with the rotation of the tool to ensure that the solder flows more evenly to various parts of the weld, thereby improving the stability and strength of the welding. After the welding is completed, the control system 8 controls the heating system 9 and the charging and discharging system 12 to shut down, and then starts the cooling system 10 to achieve rapid cooling inside the furnace 3. After the cooling is completed, the furnace door 7 is opened to take out the welded tool.

[0067] By arranging a plurality of vibrators 602 inside each active chamber 601, high-frequency vibration can be achieved while the tool is rotating, further improving the welding quality and effect, helping to release the internal stress inside the workpiece, thereby improving the stability and strength of welding. By applying a certain frequency of vibration to the tool, its internal stress can be released. This method is more efficient than natural aging treatment, does not require long waiting times, and can achieve a quick furnace-out effect. The combination of tool rotation and vibration can ensure that the solder flows more evenly to all parts of the weld, thereby achieving a better welding effect.

[0068] Embodiment 3

[0069] Based on the above embodiment, this embodiment further provides a method for welding a cubic boron nitride tool, comprising the following steps:

[0070] S1. First, apply an appropriate amount of solder on the metal substrate, place the cubic boron nitride blade at the welding position and squeeze it slightly, then put the combined tool into the existing drying equipment for drying, take out the combined tool after drying, remove the overflowed solder, and ensure the cleanliness of the combined tool surface;

[0071] S2. Place the tool assembly on the rotating member 401, and the control system 8 starts the first automatic telescopic column 502, so that the first automatic telescopic column 502 drives the side clamping member 501 to move through the moving member 503, so that the side clamping member 501 and the upper clamping member 506 cover and clamp the weld;

[0072] S3. Using the heating system 9 and the heating element 901 to heat the solder and the weld, and at the same time using the rotating member 401 to rotate the combined tool, using the collision between the vibrating member 602 to vibrate the combined tool;

[0073] S4. After welding is completed and cooled, the furnace door 7 is opened and the welded tool is taken out.

[0074] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A welding device for a cubic boron nitride tool, comprising a vacuum welding furnace body (1), wherein a furnace shell (2) is arranged in the vacuum welding furnace body (1), a furnace chamber (3) is fixedly arranged in the furnace shell (2), and a placement table (301) is fixedly arranged in the furnace chamber (3), wherein: Also includes: A rotating assembly (4), the rotating assembly (4) comprising a rotating member (401) rotatably arranged on a placement platform (301), a rotating shaft (402) being fixedly arranged at the lower end of the rotating member (401), a fixing box (403) being fixedly arranged at the lower side of the placement platform (301), a connecting member (404) located in the fixing box (403) being fixedly arranged on the rotating shaft (402), and a plurality of transmission members (405) located in the fixing box (403) being fixedly arranged on the circumferential surface of the connecting member (404), and being used for rotating a cubic boron nitride tool to be welded; A clamping assembly (5), the clamping assembly (5) comprising two side clamping members (501) arranged on both sides of the rotating member (401), the two side clamping members (501) being symmetrically distributed and used for fixing the cubic boron nitride tool to be welded; A vibration component (6), the vibration component (6) is arranged inside the fixing box (403) and is used to vibrate the cubic boron nitride tool to be welded.

2. A welding device for a cubic boron nitride tool according to claim 1, characterized in that: The rotating assembly (4) comprises a water storage member (406) fixedly arranged on the furnace (3), and the upper side of the water storage member (406) is connected to the fixed box (403) through an exhaust pipe (407).

3. A welding device for a cubic boron nitride tool according to claim 2, characterized in that: A liquid inlet pipe (409) is provided on one side of the water storage member (406), and a discharge pipe (408) communicating with the outside is provided on one side of the fixing box (403). The discharge pipe (408) is located on a side of the fixing box (403) away from the exhaust pipe (407).

4. The welding device for a cubic boron nitride tool according to claim 1, characterized in that: The clamping assembly (5) further comprises two first automatic telescopic columns (502) arranged in the rotating member (401), and movable members (503) are fixedly provided at opposite ends of the two first automatic telescopic columns (502), and the movable members (503) are slidably connected to the rotating member (401), and a connecting rod (504) is provided at the upper end of each of the movable members (503), and each of the side clamping members (501) is fixedly connected to the corresponding connecting rod (504).

5. The welding device for a cubic boron nitride tool according to claim 4, characterized in that: The rotating member (401) is provided with a plurality of clearance grooves (505) corresponding to the connecting rods (504), and the upper end of each connecting rod (504) extends out of the corresponding clearance groove (505) and can slide in the corresponding clearance groove (505).

6. A welding device for a cubic boron nitride tool according to claim 5, characterized in that: An upper clamping piece (506) is fixedly provided at the upper end of each side clamping piece (501) for covering the upper side of the cubic boron nitride tool. Optical sensors (507) corresponding to the side clamping pieces (501) are respectively provided on both sides of the rotating piece (401) for detecting contact between the upper clamping piece (506) and the side clamping piece (501) and the cubic boron nitride tool at the welding position.

7. The welding device for a cubic boron nitride tool according to claim 1, characterized in that: Each adjacent two transmission members (405) form an active chamber (601) with the fixed box (403) and the connecting member (404), and each active chamber (601) is provided with a plurality of vibrating members (602).

8. The welding device for a cubic boron nitride tool according to claim 6, characterized in that: A furnace door (7) capable of closing the furnace shell (2) and the furnace chamber (3) is hingedly connected to one side of the vacuum welding furnace body (1); a control system (8) is arranged on one side of the vacuum welding furnace body (1); and the optical sensor (507) and the first automatic telescopic column (502) are both electrically connected to the control system (8).

9. A welding device for a cubic boron nitride tool according to claim 8, characterized in that: The vacuum welding furnace body (1) is provided with a heating system (9) electrically connected to the control system (8), the heating system (9) comprising a heating element (901) arranged inside the furnace chamber (3), and the vacuum welding furnace body (1) is provided with a cooling system (10) electrically connected to the control system (8), a vacuum system (11) and a gas charging and discharging system (12).

10. A method for welding a cubic boron nitride tool, using a device for welding a cubic boron nitride tool according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Apply solder to the welding part of the metal substrate and place a cubic boron nitride blade, dry the solder, and remove the overflowed solder; S2. Place the combined tool of the cubic boron nitride blade and the metal substrate on the rotating member (401), start the first automatic telescopic column (502), and make the side clamping member (501) and the upper clamping member (506) cover and clamp the welding part; S3. Using the heating system (9) and the heating element (901) to heat the solder and the welding point, while rotating and vibrating the tool; S4. After welding is completed and cooled, the furnace door (7) is opened and the welded tool is taken out.

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