Wear-resistant tungsten steel milling cutter

Abstract

The utility model discloses a kind of wear-resistant tungsten steel milling cutters, including milling cutter assembly, cooling and flow guide mechanism, external clamping mechanism and clamping auxiliary mechanism, the cooling and flow guide mechanism includes outer fixed sleeve and cooling pipe, the external clamping mechanism includes clamping inner tube and clamping outer tube, the clamping auxiliary mechanism includes outer fixed clamping ring and outer rotating sleeve, cooling and flow guide mechanism is designed using outer fixed sleeve and symmetrical cooling pipe installation, so that coolant can be accurately guided to the cutting area of milling cutter assembly by water outlet pipe, effectively solve the high temperature problem of milling cutter in prior art, significantly reduce cutting temperature, through the ingenious cooperation of clamping inner tube, clamping outer tube and extension frame, the inconvenient problem of connecting and disassembling of cooling pipe and external liquid supply equipment is innovatively solved, the design of clamping groove and slope pressure groove makes the connection process more smooth, the design of screwing clamping plate control extension frame realizes quick locking and release, without special tool, operation can be completed.

Description

Technical Field

[0001] This utility model relates to the field of milling cutter technology, and more specifically, to a wear-resistant tungsten carbide milling cutter. Background Technology

[0002] In existing wear-resistant tungsten carbide end mill technology, tool overheating is a particularly prominent issue. During high-speed cutting, due to intense metal-to-metal friction, the temperature in the cutting zone can rapidly rise to 600-800℃, or even higher. This extreme high-temperature environment not only accelerates the tool wear process but also directly affects its cutting performance and service life.

[0003] Common tungsten carbide end mills undergo microstructural changes at high temperatures. The cobalt binder phase in the cemented carbide softens easily, leading to decreased edge strength and accelerated blunting of the cutting edge. More seriously, sudden temperature changes can cause microcracks to form on the end mill surface. These microcracks gradually expand during continuous cutting, eventually causing the tool to break or chip, resulting in not only workpiece scrap but also potential safety accidents.

[0004] The existing connection mechanisms between end mill cooling systems and external fluid supply devices generally have serious flaws. The connection structure is poorly designed, often using ordinary threaded connections or simple snap-fit ​​methods, which are prone to loosening under high-speed rotation and strong vibration environments. Once the connection becomes loose, it not only leads to coolant leakage, causing resource waste and environmental pollution, but also significantly reduces the cooling effect and accelerates tool wear. Traditional connection methods are cumbersome to operate, usually requiring the use of special tools for tightening or disassembly, increasing the labor intensity and time cost for workers. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the problems existing in the prior art, this utility model provides a wear-resistant tungsten carbide end mill to solve the technical problems mentioned in the background art, such as easy high temperature and inconvenient connection and disassembly of the cooling pipe to the external liquid supply equipment.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a wear-resistant tungsten steel end mill, comprising an end mill assembly, a cooling and guiding mechanism, an external clamping mechanism, and a clamping auxiliary mechanism. The cooling and guiding mechanism includes an outer fixed sleeve and a cooling tube, the cooling tubes being symmetrically fixed on both sides of the outer fixed sleeve. The end mill assembly can extend through the outer fixed sleeve. A water outlet pipe is installed at one end of the cooling tube, and one end of the water outlet pipe leads to the side of the end mill assembly. The external clamping mechanism includes a clamping inner tube and a clamping outer tube. The clamping outer tube is connected to one end of the cooling tube. The clamping inner tube can be directionally extended into the clamping outer tube. A clamping groove is provided on the side wall of the clamping inner tube, and a bevel groove is provided on the upper part of the clamping groove. An extension frame is laterally slidably installed on the clamping outer tube, and the extension frame can extend into the clamping groove. A threaded frame is threadedly connected to the outer wall of the clamping tube, and a rotating clamp is installed on the threaded frame. The rotating clamp and the extension frame are slidably connected, and the rotation of the rotating clamp causes the extension frame to extend into or away from the clamping groove.

[0009] The present invention is further configured such that the snap-fit ​​auxiliary mechanism includes an outer fixing clamping ring and an outer rotating sleeve. The outer fixing clamping ring is fixedly installed on the outer wall of the snap-fit ​​outer tube, and the outer rotating sleeve is rotatably installed on the outer wall of the snap-fit ​​outer tube. The outer rotating sleeve is rotatably limited within the outer fixing clamping ring. The outer fixing clamping ring has positioning holes, and multiple sets of positioning holes are provided. A bidirectional spring rod is installed on the outer rotating sleeve. The bidirectional spring rod can extend into the positioning holes step by step, so that the outer rotating sleeve rotates stably on the snap-fit ​​outer tube. A top plate is installed at the top end of the outer rotating sleeve, and a top-receiving slope plate is installed at the bottom end of the threaded frame. When the outer rotating sleeve rotates on the snap-fit ​​outer tube, the top plate pushes against the top-receiving slope plate, so that the threaded frame is threadedly fixed on the snap-fit ​​outer tube.

[0010] The present invention is further configured such that a bottom push block is installed on the threaded frame, and the bottom push block is made of rubber. The bottom push block pushes the extension frame, causing the extension frame to press longitudinally against the slope groove. The bottom push block is installed on the threaded frame and is made of rubber. Pushing the extension frame to press longitudinally against the slope groove increases the snap-fit ​​stability. At the same time, the rubber material provides a buffering effect, reducing wear caused by direct contact between metals.

[0011] The present invention is further configured such that an mounting plate is installed on the side of the outer fixed sleeve, and the device is fixed in the required position by fixing the mounting plate. The mounting plate is installed on the side of the outer fixed sleeve to fix the entire device in the required position, thereby enhancing working stability, reducing vibration, and improving processing accuracy.

[0012] The present invention is further configured such that a connecting plate is installed at one end of the snap-fit ​​inner tube, and the connecting plate is connected to an external water supply device. The connecting plate is installed at one end of the snap-fit ​​inner tube for connecting to the external water supply device, providing a standardized connection interface for easy replacement of different water supply devices.

[0013] The present invention is further configured such that a support plate is installed at one end of the cooling pipe, and the end of the snap-fit ​​outer pipe is connected to the support plate. The support plate is installed at one end of the cooling pipe and is connected to the snap-fit ​​outer pipe to enhance structural stability and ensure the correct relative position of the cooling system and the milling cutter assembly.

[0014] The present invention is further configured such that a sealing ring is installed on the inner wall of the snap-fit ​​outer tube, and the extension frame can longitudinally push the snap-fit ​​inner tube so that the outer wall of the snap-fit ​​inner tube presses against the sealing ring. The sealing ring is installed on the inner wall of the snap-fit ​​outer tube and, under the push of the extension frame, makes tight contact with the outer wall of the snap-fit ​​inner tube to ensure the sealing of the connection and prevent coolant leakage.

[0015] The present invention is further configured such that a limiting ring is fixedly installed on the outer wall of the snap-fit ​​outer tube, and a rubber ring is installed on the top end of the threaded bracket. The rubber ring can contact the limiting ring. The limiting ring is fixedly installed on the outer wall of the snap-fit ​​outer tube to provide stroke limitation for the threaded bracket and prevent excessive rotation from causing damage to the components.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides a wear-resistant tungsten carbide end mill, which has the following beneficial effects:

[0018] This invention incorporates a cooling and guiding mechanism, which employs an external fixed sleeve and symmetrically installed cooling pipes. This design allows the coolant to be precisely guided to the cutting area of ​​the milling cutter assembly through the outlet pipe, effectively solving the high-temperature problem of milling cutters in existing technologies. It significantly reduces the cutting temperature, prevents microstructural changes, microcrack formation, and premature tool wear caused by overheating of tungsten carbide milling cutters, extends the service life of the milling cutters, and improves machining quality and efficiency.

[0019] This utility model features an external snap-fit ​​mechanism. Through the ingenious combination of snap-fit ​​inner tube, snap-fit ​​outer tube, and extension frame, it innovatively solves the problem of inconvenient connection and disassembly between the cooling pipe and external liquid supply equipment. The design of the snap-fit ​​groove and the bevel groove makes the connection process smoother. The design of the rotating clamp controlling the extension frame enables quick locking and releasing, and the operation can be completed without special tools. The built-in sealing ring design ensures the sealing performance of the connection, effectively preventing coolant leakage and improving the reliability of the system and the safety of the working environment.

[0020] This utility model is equipped with a snap-fit ​​auxiliary mechanism, which adopts components such as an outer fixing ring, an outer rotating sleeve, and a bidirectional spring rod, providing additional stability for the snap-fit ​​system. The step-by-step positioning design of multiple sets of positioning holes and bidirectional spring rods makes the rotation of the outer rotating sleeve more precise and controllable. The cooperation between the top plate and the top slope plate converts the rotational force into axial fixing force, enhancing the firmness of the connection. The rubber bottom push block and rubber ring provide a buffering effect, reducing direct contact and wear between metal parts. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the device in the unused state of this utility model;

[0022] Figure 2 This is a schematic diagram of the cooling and flow guiding mechanism in this utility model;

[0023] Figure 3 This is a schematic diagram of the external snap-fit ​​mechanism and the snap-fit ​​auxiliary mechanism in this utility model;

[0024] Figure 4 This is a schematic diagram of the internal structure of the external snap-fit ​​mechanism and the snap-fit ​​auxiliary mechanism in this utility model;

[0025] Figure 5 This is a schematic diagram of the structure of a portion of the snap-fit ​​auxiliary mechanism in this utility model.

[0026] In the diagram: 1. Milling cutter assembly; 2. Outer fixed sleeve; 3. Cooling pipe; 4. Water outlet pipe; 5. Snap-fit ​​inner pipe; 6. Snap-fit ​​outer pipe; 7. Slope groove; 8. Extension frame; 9. Threaded frame; 10. Rotary clamping plate; 11. Outer fixed clamping ring; 12. Outer rotating sleeve; 13. Positioning hole; 14. Two-way spring rod; 15. Rotary top plate; 16. Top-loaded slope plate; 17. Bottom push block; 18. Mounting plate; 19. Connecting plate; 20. Support plate; 21. Sealing ring; 22. Restricting ring; 23. Rubber ring; 101. Slot. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0029] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0030] Please see Figures 1-5A wear-resistant tungsten carbide end mill includes an end mill assembly 1, a cooling and guiding mechanism, an external clamping mechanism, and a clamping auxiliary mechanism. The cooling and guiding mechanism includes an outer fixed sleeve 2 and a cooling tube 3. The cooling tube 3 is symmetrically fixed on both sides of the outer fixed sleeve 2. The end mill assembly 1 can extend through the outer fixed sleeve 2. A water outlet pipe 4 is installed at one end of the cooling tube 3, and one end of the water outlet pipe 4 leads to the side of the end mill assembly 1. The external clamping mechanism includes a clamping inner tube 5 and a clamping outer tube 6. The clamping outer tube 6 is connected to one end of the cooling tube 3. The inner tube 5 can be directionally inserted into the outer tube 6. The slot 101 is set on the side wall of the inner tube 5. The slot 101 is provided with a bevel groove 7. The outer tube 6 is slidably mounted with an extension frame 8, which can be inserted into the slot 101. The outer wall of the inner tube is threadedly connected with a threaded frame 9. A rotating clamp 10 is installed on the threaded frame 9. The rotating clamp 10 and the extension frame 8 are slidably connected. The rotation of the rotating clamp 10 causes the extension frame 8 to extend into or away from the slot 101.

[0031] In this embodiment, the cooling and guiding mechanism consists of an outer fixed sleeve 2 and symmetrically installed cooling pipes 3. When the milling cutter assembly 1 is working, the coolant flows in through the cooling pipes 3 and is then directly guided to the side of the milling cutter assembly 1 via the outlet pipe 4. This allows the coolant to be precisely sprayed onto the cutting area of ​​the milling cutter, effectively removing the heat generated during the cutting process, preventing the milling cutter from overheating, extending tool life, and improving machining quality. The outer fixed sleeve 2 also serves as a support and positioning element, ensuring that the cooling system and the milling cutter maintain the correct relative position. The external clamping mechanism clamps the inner tube 5 and the outer tube 6. To achieve connection, during operation, the inner snap-fit ​​tube 5 is inserted into the outer snap-fit ​​tube 6 connected to the cooling tube 3. The snap-fit ​​groove 101 on the side wall of the inner snap-fit ​​tube 5 cooperates with the extension bracket 8 on the outer snap-fit ​​tube 6. When the rotating clamp plate 10 on the threaded bracket 9 is rotated, the rotating clamp plate 10 drives the extension bracket 8 to move laterally, so that the extension bracket 8 extends into the snap-fit ​​groove 101 of the inner snap-fit ​​tube 5, forming a mechanical lock. The slope groove 7 on the upper part of the snap-fit ​​groove 101 allows the extension bracket 8 to be smoothly guided and locked during the insertion process, improving the stability of the connection and realizing the rapid connection and separation of the coolant supply system and the milling cutter.

[0032] The snap-fit ​​auxiliary mechanism includes an outer fixing clamping ring 11 and an outer rotating sleeve 12. The outer fixing clamping ring 11 is fixedly installed on the outer wall of the snap-fit ​​outer tube 6. The outer rotating sleeve 12 is rotatably installed on the outer wall of the snap-fit ​​outer tube 6. The outer rotating sleeve 12 is rotatably positioned within the outer fixing clamping ring 11. The outer fixing clamping ring 11 has positioning holes 13, and multiple sets of positioning holes 13 are provided. The outer rotating sleeve 12 is equipped with a bidirectional spring rod 14, which can extend into the positioning holes 13 step by step, so that the outer rotating sleeve 12 can rotate stably on the snap-fit ​​outer tube 6. A rotating top plate 15 is installed at the top end of the outer rotating sleeve 12, and a top-receiving slope plate 16 is installed at the bottom end of the threaded frame 9. The outer rotating sleeve 12 rotates on the snap-fit ​​outer tube 6, so that the rotating top plate 15 pushes against the top-receiving slope plate 16, so that the threaded frame 9 is threadedly fixed on the snap-fit ​​outer tube 6.

[0033] In this embodiment, the connection stability is enhanced by the outer retaining ring 11 and the outer rotating sleeve 12. The outer rotating sleeve 12 is limited to rotate within the outer retaining ring 11. The bidirectional spring rod 14 can extend into multiple sets of positioning holes 13 on the outer retaining ring 11 step by step to ensure the stability and accuracy of the outer rotating sleeve 12 during rotation. During operation, the outer rotating sleeve 12 is rotated so that the top plate 15 of its top pushes against the bottom slope plate 16 of the threaded frame 9, increasing the thread fixing force of the threaded frame 9 on the outer tube 6. At the same time, the rubber bottom push block 17 on the threaded frame 9 pushes the extension frame 8, so that the extension frame 8 is longitudinally pressed against the slope groove 7 of the slot 101, further enhancing the firmness of the connection. The multiple fixing mechanisms ensure the reliability of the connection under high-speed cutting and vibration conditions.

[0034] Please see Figures 1-5 As a supplementary embodiment of the wear-resistant tungsten carbide end mill for the cooling and diversion mechanism, the external clamping mechanism, and the clamping auxiliary mechanism: A bottom push block 17 is installed on the threaded frame 9, and the bottom push block 17 is made of rubber. The bottom push block 17 pushes the extension frame 8, so that the extension frame 8 is pressed longitudinally against the slope groove 7. An installation plate 18 is installed on the side of the outer fixed sleeve 2, and the device is fixed in the required position by fixing the installation plate 18. A connecting plate 19 is installed at one end of the clamping inner tube 5, and it is connected to the external water supply equipment through the connecting plate 19. A support plate 20 is installed at one end of the cooling pipe 3, and one end of the clamping outer tube 6 is connected to the support plate 20. A sealing ring 21 is installed on the inner wall of the clamping outer tube 6. The extension frame 8 can push the clamping inner tube 5 longitudinally, so that the outer wall of the clamping inner tube 5 is pressed against the sealing ring 21. A limiting ring 22 is fixedly installed on the outer wall of the clamping outer tube 6. A rubber ring 23 is installed at the top end of the threaded frame 9, and the rubber ring 23 can contact the limiting ring 22.

[0035] More specifically, the outer sleeve 2 is fixed in the required position by the mounting plate 18, the milling cutter assembly 1 passes through the outer sleeve 2 and is positioned, the snap-fit ​​inner tube 5 is connected to the external water supply equipment through the connecting plate 19, the snap-fit ​​inner tube 5 is inserted into the snap-fit ​​outer tube 6, the snap-fit ​​outer tube 6 is connected to the cooling pipe 3 through the support plate 20, the rotating clamp plate 10 on the threaded bracket 9 is rotated so that the extension bracket 8 extends into the snap-fit ​​groove 101 of the snap-fit ​​inner tube 5, and at the same time, the extension bracket 8 pushes the snap-fit ​​inner tube 5 longitudinally so that its outer wall presses against the sealing ring 21 of the inner wall of the snap-fit ​​outer tube 6. A seal is formed, the outer rotating sleeve 12 is rotated so that the top plate 15 is pushed against the top slope plate 16, which enhances the fixing force of the threaded frame 9. The bidirectional spring rod 14 extends into the positioning hole 13 to ensure the stability of the rotation position of the outer rotating sleeve 12. The water supply system is started, and the coolant flows in through the snap-fit ​​inner tube 5, the snap-fit ​​outer tube 6, and the cooling pipe 3. Finally, it is sprayed from the water outlet pipe 4 onto the cutting area of ​​the milling cutter assembly 1 to achieve effective cooling. The outer rotating sleeve 12 and the rotating clamp plate 10 are rotated in the opposite direction to release the fixing force. Then the snap-fit ​​inner tube 5 is pulled out to achieve rapid separation.

[0036] In summary, during the use or operation of the overall equipment: when the cooling and diversion mechanism is required, it consists of an outer fixed sleeve 2 and symmetrically installed cooling pipes 3. When the milling cutter assembly 1 is working, the coolant flows in through the cooling pipes 3 and is then directly guided to the side of the milling cutter assembly 1 via the outlet pipe 4, so that the coolant can be accurately sprayed on the cutting area of ​​the milling cutter, effectively removing the heat generated during the cutting process, preventing the milling cutter from overheating, extending tool life and improving machining quality. The outer fixed sleeve 2 also serves as a support and positioning element, ensuring that the cooling system and the milling cutter maintain the correct relative position.

[0037] When an external snap-fit ​​mechanism is required, the external snap-fit ​​mechanism is connected through the snap-fit ​​inner tube 5 and the snap-fit ​​outer tube 6. During operation, the snap-fit ​​inner tube 5 is inserted into the snap-fit ​​outer tube 6 connected to the cooling tube 3. The snap-fit ​​groove 101 on the side wall of the snap-fit ​​inner tube 5 cooperates with the extension frame 8 on the snap-fit ​​outer tube 6. When the rotating clamp 10 on the threaded frame 9 is rotated, the rotating clamp 10 drives the extension frame 8 to move laterally, so that the extension frame 8 extends into the snap-fit ​​groove 101 of the snap-fit ​​inner tube 5, forming a mechanical lock. The slope groove 7 on the upper part of the snap-fit ​​groove 101 allows the extension frame 8 to be smoothly guided and locked during the insertion process, improving the stability of the connection and realizing the rapid connection and separation of the coolant supply system and the milling cutter.

[0038] When the auxiliary mechanism needs to be engaged, the connection stability is enhanced by the outer retaining ring 11 and the outer rotating sleeve 12. The outer rotating sleeve 12 is limited to rotating within the outer retaining ring 11. The bidirectional spring rod 14 can extend into the multiple sets of positioning holes 13 on the outer retaining ring 11 step by step to ensure the stability and accuracy of the outer rotating sleeve 12 during rotation. During operation, the outer rotating sleeve 12 is rotated so that the top plate 15 of its top pushes against the bottom slope plate 16 of the threaded frame 9, increasing the thread fixing force of the threaded frame 9 on the outer tube 6. At the same time, the rubber bottom push block 17 on the threaded frame 9 pushes the extension frame 8, so that the extension frame 8 is longitudinally pressed against the slope groove 7 of the slot 101, further enhancing the firmness of the connection. The multiple fixing mechanisms ensure the reliability of the connection under high-speed cutting and vibration conditions.

[0039] The outer sleeve 2 is fixed in the desired position by mounting plate 18. The milling cutter assembly 1 passes through the outer sleeve 2 and is positioned. The snap-fit ​​inner tube 5 is connected to the external water supply equipment through connecting plate 19. The snap-fit ​​inner tube 5 is inserted into the snap-fit ​​outer tube 6. The snap-fit ​​outer tube 6 is connected to the cooling pipe 3 through support plate 20. The rotating clamp plate 10 on the threaded bracket 9 is rotated so that the extension bracket 8 extends into the snap-fit ​​groove 101 of the snap-fit ​​inner tube 5. At the same time, the extension bracket 8 pushes the snap-fit ​​inner tube 5 longitudinally, so that its outer wall presses against the sealing ring 21 of the inner wall of the snap-fit ​​outer tube 6, forming... Seal and rotate the outer rotating sleeve 12 so that the top plate 15 pushes against the top slope plate 16, enhancing the fixing force of the threaded frame 9. The bidirectional spring rod 14 extends into the positioning hole 13 to ensure the stability of the rotation position of the outer rotating sleeve 12. Start the water supply system, and coolant flows in through the snap-fit ​​inner tube 5, snap-fit ​​outer tube 6, and cooling pipe 3. Finally, it is sprayed from the water outlet pipe 4 onto the cutting area of ​​the milling cutter assembly 1 to achieve effective cooling. Rotate the outer rotating sleeve 12 and the rotating clamp plate 10 in the opposite direction to release the fixing force. Then, pull out the snap-fit ​​inner tube 5 to achieve rapid separation.

[0040] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

[0041] In all the solutions mentioned above, those involving the operation of electrical components, unless otherwise explicitly described, are controlled by a controller. Since the devices matched with the controllers are common devices, their control principles and circuit connections are existing, well-known, and mature technologies, and their specific circuit structures will not be elaborated here. In all the solutions mentioned above, those involving motors can be used with a reducer if necessary. The connection structure and working principle between the motor and the reducer are existing, well-known technologies, and will not be elaborated here.

Claims

1. A wear-resistant tungsten carbide end mill, comprising an end mill assembly (1), a cooling and guiding mechanism, an external clamping mechanism, and a clamping auxiliary mechanism, characterized in that: The cooling and guiding mechanism includes an outer fixed sleeve (2) and a cooling pipe (3). The cooling pipe (3) is symmetrically fixed on both sides of the outer fixed sleeve (2). The milling cutter assembly (1) can extend through the outer fixed sleeve (2). A water outlet pipe (4) is installed at one end of the cooling pipe (3), and one end of the water outlet pipe (4) leads to the side of the milling cutter assembly (1). The external snap-fit ​​mechanism includes a snap-fit ​​inner tube (5) and a snap-fit ​​outer tube (6). The snap-fit ​​outer tube (6) is connected to one end of the cooling pipe (3). The snap-fit ​​inner tube (5) can be directionally extended into the snap-fit ​​outer tube (6). The slot (101) is set on the side wall of the inner tube (5). The slot (101) is provided with a slope groove (7). The outer tube (6) is slidably installed with an extension frame (8). The extension frame (8) can extend into the slot (101). The outer wall of the tube is threadedly connected with a threaded frame (9). A rotating clamp (10) is installed on the threaded frame (9). The rotating clamp (10) and the extension frame (8) are slidably connected. The rotation of the rotating clamp (10) causes the extension frame (8) to extend into or away from the slot (101).

2. The wear-resistant tungsten carbide end mill according to claim 1, characterized in that: The clamping auxiliary mechanism includes an outer fixing ring (11) and an outer rotating sleeve (12). The outer fixing ring (11) is fixedly installed on the outer wall of the clamping outer tube (6), and the outer rotating sleeve (12) is rotatably installed on the outer wall of the clamping outer tube (6). The outer rotating sleeve (12) is rotatably positioned within the outer fixing ring (11). The outer fixing ring (11) has positioning holes (13), and multiple sets of positioning holes (13) are provided. A bidirectional spring rod is installed on the outer rotating sleeve (12). 14), the bidirectional spring rod (14) can be inserted into the positioning hole (13) step by step, so that the outer rotating sleeve (12) can rotate stably on the snap-fit ​​outer tube (6). The top end of the outer rotating sleeve (12) is equipped with a rotating top plate (15), and the bottom end of the threaded frame (9) is equipped with a top-receiving slope plate (16). The outer rotating sleeve (12) rotates on the snap-fit ​​outer tube (6), so that the rotating top plate (15) pushes against the top-receiving slope plate (16), so that the threaded frame (9) is threadedly fixed on the snap-fit ​​outer tube (6).

3. The wear-resistant tungsten carbide end mill according to claim 1, characterized in that: The threaded frame (9) is equipped with a bottom push block (17), which pushes the extension frame (8) so that the extension frame (8) presses longitudinally against the slope groove (7).

4. The wear-resistant tungsten carbide end mill according to claim 1, characterized in that: The outer sleeve (2) is provided with a mounting plate (18) on its side, and the device is fixed in the required position by fixing the mounting plate (18).

5. The wear-resistant tungsten carbide end mill according to claim 1, characterized in that: One end of the snap-fit ​​inner tube (5) is equipped with a connecting plate (19), and is connected to an external water supply device through the connecting plate (19).

6. The wear-resistant tungsten carbide end mill according to claim 1, characterized in that: One end of the cooling pipe (3) is equipped with a support plate (20), and the end of the outer pipe (6) is connected to the support plate (20).

7. The wear-resistant tungsten carbide end mill according to claim 1, characterized in that: A sealing ring (21) is installed on the inner wall of the snap-fit ​​outer tube (6). The insertion frame (8) can push the snap-fit ​​inner tube (5) longitudinally so that the outer wall of the snap-fit ​​inner tube (5) is pressed against the sealing ring (21).

8. A wear-resistant tungsten carbide end mill according to claim 1, characterized in that: A limiting ring (22) is fixedly installed on the outer wall of the snap-fit ​​outer tube (6), and a rubber ring (23) is installed at the top end of the threaded bracket (9). The rubber ring (23) can contact the limiting ring (22).

Images