PCBN tool auxiliary fixing clamp and using method thereof

Abstract

The invention relates to the technical field of clamps, in particular to a PCBN tool auxiliary fixing clamp and a using method thereof.The PCBN tool auxiliary fixing clamp comprises a workbench, a preliminary positioning assembly and a supporting plate are fixedly connected to the upper end of the workbench, a driving assembly is fixedly connected to the inner side of the preliminary positioning assembly, and a transverse plate is fixedly connected to the front end of the driving assembly; a clamping and fixing assembly is fixedly connected to the front end of the transverse plate through a first screw, a PCBN cutter body is connected to the upper end of the preliminary positioning assembly in a pressing mode, the clamping and fixing assembly comprises a wall hanging frame, a reinforcing sleeve is fixedly connected to the upper end of the wall hanging frame through a bolt, a built-in block is fixedly connected to the inner side of the reinforcing sleeve, and a shaft rotating hole is formed in the inner side of the built-in block; and a first baffle and a clockwork spring are fixedly connected to the inner side of the shaft rotating hole, a shaft column is rotatably connected to the inner side of the shaft rotating hole, and a second baffle is fixedly connected to the lower end of the shaft column. The device can automatically adapt to PCBN tool bodies of different sizes for stable clamping, the clamping structure is flat and does not protrude outwards, machining damage is avoided, and convenience and universality are improved.

Description

Technical Field

[0001] This invention relates to the field of fixture technology, specifically to a PCBN tool auxiliary fixing fixture and its usage method. Background Technology

[0002] PCBN tools, or polycrystalline cubic boron nitride tools, are superhard tools made by sintering fine cubic boron nitride material under high temperature and pressure. They have high hardness, high wear resistance, high thermal stability, and good chemical stability, making them particularly suitable for machining high-hardness ferrous metals such as hardened steel and cast iron. PCBN tools can meet the requirements of high-speed cutting, dry cutting, and green manufacturing, and are widely used in industrial manufacturing fields such as automotive, aerospace, energy, military, and mold making. During the use of PCBN cutting tools, wear is inevitable. When the wear reaches a certain level, grinding can effectively restore the cutting performance of the tool and extend its service life. In order to improve the strength and wear resistance of the tool, a series of treatments are usually carried out on the cutting edge of PCBN cutting tools during the manufacturing stage, such as adopting a negative rake angle design, performing negative chamfering and fine grinding, and blunt rounding treatment. PCBN tool auxiliary fixing fixtures are devices used to securely hold PCBN tools during cutting. Their main function is to ensure the stability of the tool during high-speed cutting, preventing the tool from shifting or being damaged due to vibration or cutting force, thereby ensuring machining accuracy and efficiency. These fixtures typically use mechanical clamping, threaded fixing, or other methods to firmly mount the PCBN tool on the tool holder of the machine tool. They can also adjust the angle and position of the tool according to machining requirements. However, when fixing PCBN tools, the traditional fixing method usually involves selecting a specific type of fixture for alignment and clamping. Although this method can achieve a relatively stable fixing effect, its applicability is poor. Because there are many types of PCBN tools, and different models of tools have different sizes and shapes, traditional fixtures can often only be used with specific models of tools. Once a different model of tool is changed, the fixture needs to be readjusted or replaced. This not only increases the complexity and time cost of operation, but also leads to a decrease in fixing accuracy. Therefore, to address the above problems, an auxiliary fixing fixture for PCBN tools and its usage method are proposed. Summary of the Invention

[0003] The purpose of this invention is to provide a PCBN tool auxiliary fixing fixture and its usage method to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A PCBN tool auxiliary fixing fixture and its usage method are disclosed, comprising a worktable, a preliminary positioning component and a support plate fixedly connected to the upper end of the worktable, a driving component fixedly connected to the inner side of the preliminary positioning component, a horizontal plate fixedly connected to the front end of the driving component, a clamping component fixedly connected to the front end of the horizontal plate by a first screw, a PCBN tool body pressed against the upper end of the preliminary positioning component, and a clamping component including a wall mount, a reinforcing sleeve fixedly connected to the upper end of the wall mount by bolts, an inner block fixedly connected to the inner side of the reinforcing sleeve, a shaft rotation hole opened in the inner side of the inner block, a first baffle and a spring fixedly connected to the inner side of the shaft rotation hole, a shaft column rotatably connected to the inner side of the shaft rotation hole, a second baffle fixedly connected to the lower end of the shaft column, and a clamping plate fixedly connected to the upper end of the shaft column.

[0005] As a further optimization of the present invention, the preliminary positioning component includes a support column, the upper end of the support column is provided with a threaded hole, a stud is spirally installed inside the threaded hole, and a flat column and a pressure plate are sequentially fixedly connected to the top of the stud.

[0006] As a further optimization of the present invention, the support column is fixedly connected to the workbench by a second screw, the lower end of the pressure plate is in close contact with the upper end of the PCBN tool body, and the lower end of the PCBN tool body is in close contact with the upper end of the support column.

[0007] As a further optimization of the present invention, the drive assembly includes an oil housing, a cylindrical groove is formed on the inner side of the oil housing, a cylindrical guide rod is slidably connected to the inner side of the cylindrical groove, a rubber sealing ring is fixedly connected to the outer side of the cylindrical guide rod, a spring is fixedly connected to the rear end of the cylindrical guide rod, a communication port is formed at the rear end of the oil housing, and a solenoid valve and a sealing airbag ball are fixedly connected to one side of the rear end of the communication port.

[0008] As a further optimization of the present invention, the outer side of the rubber sealing ring is fitted with the inner side of the cylindrical groove, the cylindrical groove is connected to the connecting port, the rear end of the spring is fixedly connected to the rear end of the cylindrical groove, and the cylindrical groove, the connecting port and the sealing airbag ball are all filled with hydraulic oil.

[0009] As a further optimization of the present invention, the outer side of the oil tank is fixedly connected to the inner side of the support plate, and the front end of the cylindrical guide rod is welded and fixed to the rear end of the horizontal plate.

[0010] As a further optimization of the present invention, the rear end of the wall mount is fixedly connected to the horizontal plate by a first screw, a screw hole is provided on the inner side of the wall mount, the wall mount and the shaft are fitted with a clearance, and the reinforcing sleeve is tightly attached to the wall mount.

[0011] As a further optimization of the present invention, the first baffle and the second baffle are on the same horizontal line, and the inner side of the spring is fixedly connected to the shaft.

[0012] As a further optimization of the present invention, the number of clamping components is two, and the two clamping plates are attached to the rear end of the PCBN tool body.

[0013] A method for using a PCBN tool auxiliary fixing fixture. Step 1: First, position the PCBN tool body. Fix the support column to the worktable with the second screw. Align the through hole and threaded hole of the PCBN tool body vertically. Place the PCBN tool body on the top of the support column. Then, screw the stud through the mounting hole and threaded hole of the PCBN tool body until there is a gap of one millimeter between the pressure plate and the PCBN tool body. Step 2: When driving the clamping assembly, the solenoid valve is opened, and the clamping assembly is moved away from the PCBN tool body. The cylindrical guide rod is housed inside the oil shell. After the solenoid valve is opened, the sealing airbag ball connects with the connecting port. Under the push of the two springs, the two cylindrical guide rods move forward respectively. The air at the front end of the rubber sealing ring flows out from between the cylindrical guide rod and the front end of the cylindrical groove. The hydraulic oil inside the sealing airbag ball enters the interior of the cylindrical groove through the solenoid valve and the connecting port. The rubber sealing ring seals the cylindrical guide rod and the oil shell. By pushing the two cylindrical guide rods, the horizontal plate moves forward. The horizontal plate drives the entire clamping assembly to move forward, thus completing the driving of the clamping assembly. Step 3: Correct the angle of the PCBN tool body. Under the push of the PCBN tool body, the two clamping plates will contact the rear end face of the PCBN tool body. Under the limiting action of the first and second baffles, the spring will drive the spindle to rotate by torque. After the clamping plates contact the rear end face of the PCBN tool body, the clamping plates will be squeezed and drive the spindle to rotate. The spindle rotates inside the spindle hole. The spindle drives the spring to undergo a certain deformation. At this time, one side of the clamping plate is in close contact with one end face of the PCBN tool body. Step 4: When fixing the PCBN tool body, the solenoid valve is closed by controlling the existing controller. At this time, the hydraulic oil in the connecting port and the cylindrical groove will no longer flow. In this way, the cylindrical guide rod is fixed in the position inside the oil shell. Then rotate the pressure plate to press the lower end of the pressure plate tightly against the upper end of the PCBN tool body. Step 5: During reset, the control solenoid valve opens, and the horizontal plate is pulled backward. At this time, the cylindrical guide rod moves into the cylindrical groove, and the hydraulic oil inside the cylindrical groove flows back into the sealing airbag ball. The sealing airbag ball deforms and closes the solenoid valve.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, by setting up a preliminary positioning component and a clamping component, the device can automatically adjust and achieve stable clamping according to the specific size of the PCBN tool body when clamping it. The clamped structure is flat and will not protrude outward, thereby effectively avoiding damage to the clamping structure during processing. This design makes the device applicable to clamping operations of PCBN tool bodies of various sizes during processing, significantly improving the convenience and versatility of use. 2. In this invention, the device can precisely adjust the angle of the PCBN tool body through the clamping plate, spring, shaft, and shaft rotation hole. Furthermore, the close contact between the clamping plate and the end face of the PCBN tool body increases the contact area, thereby significantly improving the stability during machining. 3. In this invention, by using the cylindrical guide rod, solenoid valve, connecting port and sealing airbag ball, the device utilizes the flow of hydraulic oil and the movement of the cylindrical guide rod to achieve precise driving of the clamping component. At the same time, by controlling the opening and closing of the solenoid valve, the position of the clamping component and the PCBN tool body can be quickly fixed to prevent them from separating and ensure the stability of the processing. 4. In this invention, the device fixes the PCBN tool body by means of the pressure plate and drive assembly. This flexible fixing method avoids damage to the hard PCBN tool body and significantly improves the stability during fixing, thereby improving the processing quality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall exploded structure of the present invention; Figure 3 This is a schematic diagram of the horizontal plate structure of the present invention; Figure 4 This is a cross-sectional structural diagram of the driving component of the present invention; Figure 5 This is an exploded structural diagram of the driving component of the present invention; Figure 6 This is an exploded structural diagram of the preliminary positioning component of the present invention; Figure 7 This is a cross-sectional structural diagram of the clamping assembly of the present invention; Figure 8 This is an exploded structural diagram of the clamping assembly of the present invention; Figure 9 For the present invention Figure 8 A schematic diagram of the structure at point A.

[0016] In the diagram: 1. Workbench; 2. Initial positioning components; 21. Support column; 22. Second screw; 23. Threaded hole; 24. Stud; 25. Flat column; 26. Pressure plate; 3. Clamping assembly; 31. Wall mount; 32. Reinforcing sleeve; 33. Internal block; 34. Shaft rotation hole; 35. First baffle; 36. Spring; 37. Shaft post; 38. Second baffle; 39. Clamping plate; 4. Support plate; 5. Drive assembly; 51. Oil housing; 52. Cylindrical groove; 53. Cylindrical guide rod; 54. Rubber sealing ring; 55. Spring; 56. Connecting port; 57. Solenoid valve; 58. Sealing airbag ball; 6. Horizontal plate; 7. First screw; 8. PCBN tool body. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0019] Please see Figures 1-9 The present invention provides a technical solution: A PCBN tool auxiliary fixing fixture and its usage method include a worktable 1. A preliminary positioning component 2 and a support plate 4 are fixedly connected to the upper end of the worktable 1. A drive component 5 is fixedly connected to the inner side of the preliminary positioning component 2. A horizontal plate 6 is fixedly connected to the front end of the drive component 5. A clamping component 3 is fixedly connected to the front end of the horizontal plate 6 by a first screw 7. A PCBN tool body 8 is pressed onto the upper end of the preliminary positioning component 2. The clamping component 3 includes a wall bracket 31. A reinforcing sleeve 32 is fixedly connected to the upper end of the wall bracket 31 by bolts. An internal block 33 is fixedly connected to the inner side of the reinforcing sleeve 32. A shaft rotation hole 34 is opened in the inner side of the internal block 33. A first baffle 35 and a spring 36 are fixedly connected to the inner side of the shaft rotation hole 34. A shaft column 37 is rotatably connected to the inner side of the shaft rotation hole 34. A second baffle 38 is fixedly connected to the lower end of the shaft column 37. A clamping plate 39 is fixedly connected to the upper end of the shaft column 37.

[0020] As a further implementation of this solution, the preliminary positioning component 2 includes a support column 21. The upper end of the support column 21 has a threaded hole 23. A stud 24 is screwed inside the threaded hole 23. A flat column 25 and a pressure plate 26 are fixedly connected to the top of the stud 24 in sequence. The support column 21 is fixedly connected to the worktable 1 by a second screw 22. The lower end of the pressure plate 26 is in close contact with the upper end of the PCBN tool body 8. The lower end of the PCBN tool body 8 is in close contact with the upper end of the support column 21. Through the above settings, the effect of preliminary positioning of the PCBN tool body 8 is achieved, the range of motion of the PCBN tool body 8 is controlled, and the subsequent angle adjustment of the PCBN tool body 8 is not affected. As a further implementation of this solution, the drive assembly 5 includes an oil housing 51. A cylindrical groove 52 is formed on the inner side of the oil housing 51. A cylindrical guide rod 53 is slidably connected to the inner side of the cylindrical groove 52. A rubber sealing ring 54 is fixedly connected to the outer side of the cylindrical guide rod 53. A spring 55 is fixedly connected to the rear end of the cylindrical guide rod 53. A connecting port 56 is formed at the rear end of the oil housing 51. A solenoid valve 57 and a sealing airbag ball 58 are fixedly connected to one side of the rear end of the connecting port 56. The outer side of the rubber sealing ring 54 fits against the inner side of the cylindrical groove 52. The cylindrical groove 52 and the connecting port... 56 is connected, the rear end of spring 55 is fixedly connected to the rear end of cylindrical groove 52, cylindrical groove 52, connecting port 56 and sealing airbag ball 58 are all filled with hydraulic oil, the outer side of oil shell 51 is fixedly connected to the inner side of support plate 4, and the front end of cylindrical guide rod 53 is welded and fixed to the rear end of horizontal plate 6. With the above settings, the device can achieve precise driving of clamping component 3. At the same time, by controlling the opening and closing of solenoid valve 57, the position of clamping component 3 and PCBN tool body 8 can be quickly fixed to prevent them from separating and ensure the stability of the processing process. As a further implementation of this solution, the rear end of the wall mount 31 is fixedly connected to the horizontal plate 6 by the first screw 7. The wall mount 31 has a screw hole on its inner side. The wall mount 31 and the shaft column 37 are fitted with a clearance. The reinforcing sleeve 32 is tightly attached to the wall mount 31. The first baffle 35 and the second baffle 38 are on the same horizontal line. The inner side of the spring 36 is fixedly connected to the shaft column 37. There are two clamping components 3. The two clamping plates 39 are attached to the rear end of the PCBN tool body 8. With the above settings, this design can accurately adjust the angle of the PCBN tool body 8. The tight contact between the clamping plates 39 and the end face of the PCBN tool body 8 increases the contact area, thereby significantly improving the stability during processing.

[0021] Workflow: First, position the PCBN tool body 8. Fix the support column 21 to the worktable 1 with the second screw 22. Align the through hole and threaded hole 23 of the PCBN tool body 8 vertically. Place the PCBN tool body 8 on the top of the support column 21. Then, screw the stud 24 through the mounting hole of the PCBN tool body 8 and the threaded hole 23 with a screw until a gap of one millimeter is left between the pressure plate 26 and the PCBN tool body 8 to facilitate the adjustment of the angle of the PCBN tool body 8 later. When driving the clamping assembly 3, the solenoid valve 57 is opened by the existing controller. Before this, the clamping assembly 3 is far away from the PCBN tool body 8, and the cylindrical guide rod 53 is housed inside the oil shell 51. After the solenoid valve 57 is opened, the sealing airbag ball 58 is connected to the connecting port 56. Under the push of the two springs 55, the two cylindrical guide rods 53 move forward respectively. The air at the front end of the rubber sealing ring 54 flows out from between the cylindrical guide rod 53 and the front end of the cylindrical groove 52. The gap between them is small, which can control the speed of the cylindrical guide rod 53 moving forward. The hydraulic oil inside the sealing airbag ball 58 will enter the interior of the cylindrical groove 52 through the solenoid valve 57 and the connecting port 56. The rubber sealing ring 54 plays the role of sealing between the cylindrical guide rod 53 and the oil shell 51. By pushing the two cylindrical guide rods 53, the horizontal plate 6 will move forward. The horizontal plate 6 drives the clamping assembly 3 to move forward as a whole, thereby completing the driving of the clamping assembly 3. The angle of the PCBN tool body 8 is corrected. Under the push of the PCBN tool body 8, the two clamping plates 39 will contact the rear end face of the PCBN tool body 8. Under the limiting action of the first baffle 35 and the second baffle 38, the angle of rotation of the spring spring 36 driven by torque to the shaft column 37 can be controlled. This keeps the clamping plates 39 in an inclined state. After the clamping plates 39 contact the rear end face of the PCBN tool body 8, the clamping plates 39 are squeezed and drive the shaft column 37 to rotate. The shaft column 37 rotates inside the shaft rotation hole 34. Applying lubricating oil and rotating the shaft rotation hole 34 and the shaft column 37 can improve the stability of the shaft column 37 inside the shaft rotation hole 34. The shaft column 37 drives the spring 36 to undergo a certain deformation, and the spring 36 plays the role of resetting the shaft column 37. At this time, one side of the clamping plate 39 is in close contact with one end face of the PCBN tool body 8. The pushing of the two clamping plates 39 not only achieves the angle correction of the PCBN tool body 8, but also increases the area with the PCBN tool body 8, further improving the stability of the PCBN tool body 8 during processing. When fixing the PCBN tool body 8, the solenoid valve 57 is closed by the existing controller. At this time, the hydraulic oil in the connecting port 56 and the cylindrical groove 52 will no longer flow. In this way, the cylindrical guide rod 53 is fixed in the position inside the oil shell 51. The limiting of the cylindrical guide rod 53 can prevent the clamping assembly 3 from separating from the PCBN tool body 8, thereby achieving the effect of fixing the PCBN tool body 8. When the pressure plate 26 is rotated, the lower end of the pressure plate 26 is pressed tightly against the upper end of the PCBN tool body 8, thereby achieving the effect of fixing the PCBN tool body 8. This fixing method not only reduces the damage to the hard PCBN tool body 8, but also significantly improves the stability when fixing the PCBN tool body 8, thereby improving the quality of processing the PCBN tool body 8. During reset, the control solenoid valve 57 opens, directly pulling the horizontal plate 6 backward. At this time, the cylindrical guide rod 53 moves into the cylindrical groove 52, and the hydraulic oil inside the cylindrical groove 52 flows back into the sealing airbag ball 58. The sealing airbag ball 58 deforms and closes the solenoid valve 57, making it convenient to clamp the PCBN tool body 8 again during processing.

[0022] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A PCBN tool auxiliary fixing fixture, comprising a worktable (1), characterized in that: The workbench (1) is fixedly connected to a preliminary positioning component (2) and a support plate (4). The preliminary positioning component (2) is fixedly connected to a drive component (5) on its inner side. The drive component (5) is fixedly connected to a horizontal plate (6) at its front end. The horizontal plate (6) is fixedly connected to a clamping component (3) at its front end by a first screw (7). The preliminary positioning component (2) is pressed against a PCBN tool body (8). The clamping assembly (3) includes a wall mount (31), the upper end of which is fixedly connected to a reinforcing sleeve (32) by bolts. An inner block (33) is fixedly connected to the inner side of the reinforcing sleeve (32). A shaft rotation hole (34) is opened on the inner side of the inner block (33). A first baffle (35) and a spring spring (36) are fixedly connected to the inner side of the shaft rotation hole (34). A shaft column (37) is rotatably connected to the inner side of the shaft rotation hole (34). A second baffle (38) is fixedly connected to the lower end of the shaft column (37). A clamping plate (39) is fixedly connected to the upper end of the shaft column (37).

2. The PCBN tool auxiliary fixing fixture according to claim 1, characterized in that: The preliminary positioning component (2) includes a support column (21), the upper end of which is provided with a threaded hole (23), and a stud (24) is spirally installed inside the threaded hole (23). A flat column (25) and a pressure plate (26) are sequentially fixedly connected to the top of the stud (24).

3. The PCBN tool auxiliary fixing fixture according to claim 2, characterized in that: The support column (21) is fixedly connected to the workbench (1) by the second screw (22), the lower end of the pressure plate (26) is in close contact with the upper end of the PCBN tool body (8), and the lower end of the PCBN tool body (8) is in close contact with the upper end of the support column (21).

4. The PCBN tool auxiliary fixing fixture according to claim 1, characterized in that: The drive assembly (5) includes an oil housing (51), a cylindrical groove (52) is provided on the inner side of the oil housing (51), a cylindrical guide rod (53) is slidably connected to the inner side of the cylindrical groove (52), a rubber sealing ring (54) is fixedly connected to the outer side of the cylindrical guide rod (53), a spring (55) is fixedly connected to the rear end of the cylindrical guide rod (53), a communication port (56) is provided at the rear end of the oil housing (51), and a solenoid valve (57) and a sealing airbag ball (58) are fixedly connected to one side of the rear end of the communication port (56).

5. A PCBN tool auxiliary fixing fixture according to claim 4, characterized in that: The outer side of the rubber sealing ring (54) is fitted with the inner side of the cylindrical groove (52), the cylindrical groove (52) is connected to the connecting port (56), the rear end of the spring (55) is fixedly connected to the rear end of the cylindrical groove (52), and the cylindrical groove (52), the connecting port (56) and the sealing airbag ball (58) are all filled with hydraulic oil.

6. A PCBN tool auxiliary fixing fixture according to claim 4, characterized in that: The outer side of the oil tank (51) is fixedly connected to the inner side of the support plate (4), and the front end of the cylindrical guide rod (53) is welded and fixed to the rear end of the horizontal plate (6).

7. A PCBN tool auxiliary fixing fixture according to claim 1, characterized in that: The rear end of the wall mount (31) is fixedly connected to the horizontal plate (6) by the first screw (7). The wall mount (31) has a screw hole on its inner side. The wall mount (31) and the shaft column (37) are fitted with a clearance. The reinforcing sleeve (32) is tightly attached to the wall mount (31).

8. A PCBN tool auxiliary fixing fixture according to claim 1, characterized in that: The first baffle (35) and the second baffle (38) are on the same horizontal line, and the inner side of the spring (36) is fixedly connected to the shaft (37).

9. A PCBN tool auxiliary fixing fixture according to claim 1, characterized in that: The number of clamping components (3) is two, and the two clamping plates (39) are attached to the rear end of the PCBN tool body (8).

10. A method of using a PCBN tool auxiliary fixing fixture according to any one of claims 1-9, characterized in that: Step 1: First, position the PCBN tool body (8), fix the support column (21) to the worktable (1) with the second screw (22), align the through hole and threaded hole (23) of the PCBN tool body (8) vertically, place the PCBN tool body (8) on the top of the support column (21), and then connect the stud (24) to the threaded hole (23) through the mounting hole of the PCBN tool body (8) until there is a gap of one millimeter between the pressure plate (26) and the PCBN tool body (8). Step 2: When driving the clamping assembly (3), the control solenoid valve (57) is opened, and the clamping assembly (3) is moved away from the PCBN tool body (8). The cylindrical guide rod (53) is housed inside the oil shell (51). After the solenoid valve (57) is opened, the sealing airbag ball (58) is connected to the connecting port (56). Under the push of the elastic force of the two springs (55), the two cylindrical guide rods (53) move towards the front end respectively. The air at the front end of the rubber sealing ring (54) flows out from the cylindrical guide rod ( The hydraulic oil inside the sealing airbag ball (58) flows out between the front end of the cylindrical groove (53) and the cylindrical groove (52). The hydraulic oil inside the sealing airbag ball (58) will enter the interior of the cylindrical groove (52) through the solenoid valve (57) and the connecting port (56). The rubber sealing ring (54) seals the cylindrical guide rod (53) and the oil shell (51). By pushing the two cylindrical guide rods (53), the horizontal plate (6) will move forward. The horizontal plate (6) drives the clamping assembly (3) to move forward as a whole, thereby completing the driving of the clamping assembly (3). Step 3: Correct the angle of the PCBN tool body (8). Under the push of the PCBN tool body (8), the two clamping plates (39) will contact the rear end face of the PCBN tool body (8). Under the limiting action of the first baffle (35) and the second baffle (38), the spring spring (36) drives the shaft column (37) to rotate by torque. After the clamping plate (39) contacts the rear end face of the PCBN tool body (8), the clamping plate (39) is squeezed and drives the shaft column (37) to rotate. The shaft column (37) rotates inside the shaft rotation hole (34). The shaft column (37) drives the spring spring (36) to undergo a certain deformation. At this time, one side of the clamping plate (39) is in close contact with one end face of the PCBN tool body (8). Step 4: When fixing the PCBN tool body (8), the solenoid valve (57) is closed by controlling the existing controller. At this time, the hydraulic oil inside the connecting port (56) and the cylindrical groove (52) will no longer flow. In this way, the cylindrical guide rod (53) is fixed in the position inside the oil shell (51). When rotating the pressure plate (26), the lower end of the pressure plate (26) is pressed tightly against the upper end of the PCBN tool body (8). Step 5: During reset, control the solenoid valve (57) to open and directly pull the horizontal plate (6) to move backward. At this time, the cylindrical guide rod (53) moves into the cylindrical groove (52), and the hydraulic oil inside the cylindrical groove (52) flows back into the sealing airbag ball (58). The sealing airbag ball (58) deforms and closes the solenoid valve (57).

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