Numerical control milling machine for machining gear head

Abstract

The application discloses a numerical control milling machine for gear head machining, and relates to the technical field of gear machining.The numerical control milling machine comprises a follow-up spraying cutting device, a moving slide and an anti-vibration clamping mechanism.The follow-up spraying cutting device comprises a follow-up spraying part and a cutting part.When the gear head is machined, the gear to be machined is placed on the anti-vibration clamping mechanism, and the anti-vibration clamping mechanism clamps and fixes the gear.After the gear is fixed, the worker drives the moving slide to run, and stops the displacement when the moving slide moves right below the follow-up spraying cutting device.The worker drives the cutting part to move downwards.When the cutting part moves to the machining position, the cutting part machines the gear head and drives the follow-up spraying part to rotate.At the same time, the external cutting fluid enters the follow-up spraying part and is directly sprayed on the machining position of the gear head.The application sprays the cutting fluid on the machining position in real time through the follow-up spraying part, and has the effect of no dead angle spraying.

Description

Technical Field

[0001] This invention relates to the field of gear machining technology, specifically a CNC milling machine for machining gear heads. Background Technology

[0002] As a core component of mechanical transmission systems, the quality of gear head milling and slot milling directly affects the overall machine's operational stability and service life. During CNC milling, because the gear head's tooth grooves are usually deep, a large amount of high-temperature metal chips generated by high-speed cutting are easily trapped inside the deep tooth grooves and are difficult to be discharged on their own. The accumulated chips are easily rolled back into the rotating milling cutter in subsequent machining, resulting in secondary cutting. This not only significantly accelerates the wear of the milling cutter and shortens the tool life, but also easily causes scratches on the machined tooth surface or groove wall, thereby reducing the surface quality and dimensional accuracy of the gear head.

[0003] Currently, traditional CNC milling machines mostly use ordinary nozzles fixed on the spindle box or machine tool structure to spray cutting fluid. However, the spray position and angle of these nozzles are relatively fixed. During the machining process, the cutting fluid jet is easily blocked by the tool body, spindle or workpiece structure, forming a cooling blind zone. Since it cannot be dynamically adjusted with the rotation and movement of the spindle, the fixed nozzle cannot continuously flush the cutting contact area without dead angles in 360°. It cannot effectively remove residual chips at the bottom of the deep groove in time, and it is difficult to meet the heat dissipation and chip removal requirements of high-precision gear head machining. Summary of the Invention

[0004] The purpose of this invention is to provide a CNC milling machine for gear head machining, so as to solve the problem in the prior art that a fixed nozzle cannot follow the movement to achieve a thorough cleaning.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a CNC milling machine for gear head machining, comprising a bed, a follow-up spray cutting device, a movable slide, and an anti-vibration clamping mechanism, wherein the movable slide is disposed on the bed, the anti-vibration clamping mechanism is disposed on the movable slide, a spindle box is disposed on the bed, and the follow-up spray cutting device comprises a follow-up spray component and a cutting component; The follow-up spray component includes a mounting ring, a follow-up collar, and a liquid hose. The mounting ring is located on the lower end face of the spindle box. The cutting component coaxially passes through the mounting ring and is connected to the follow-up collar. The follow-up collar is fitted inside the mounting ring. Both the mounting ring and the follow-up collar have liquid storage chambers, which are interconnected to form an annular distribution chamber. The mounting ring has a liquid inlet communicating with the annular distribution chamber, and the liquid hose is connected to the liquid inlet. The follow-up collar has circumferentially inclined nozzles, and several of these inclined nozzles are connected to the annular distribution chamber. The cutting component is connected to the spindle box. During gear head machining, the operator places the gear to be machined onto the anti-vibration clamping mechanism, which clamps and fixes the gear. After the gear is fixed, the moving slide is driven by the operation control system. The vibration-resistant clamping mechanism moves synchronously with the moving slide. When it moves directly below the follow-up spray cutting device, the moving slide stops moving. Then, the operator drives the spindle box on the machine bed to move downward through the control system. The follow-up spray cutting device moves downward synchronously with the spindle box. When it moves to the machining position, the operator drives the cutting component to run through the control system. The cutting component rotates, causing the follower collar to rotate. At the same time, external cutting fluid is delivered to the inlet through a liquid hose and enters the annular distribution chamber. After being evenly distributed through the annular distribution chamber, the cutting fluid is sprayed out from the inclined nozzles set around the follower collar. The cutting fluid is guided by the inclined nozzles and sprayed directly onto the cutting position of the gear head. It sprays synchronously with the rotation of the cutting component, achieving 360° no dead angle flushing. It can promptly remove the cutting heat and chips generated during machining and avoid chip accumulation on the machining surface, which affects the machining accuracy.

[0006] The mounting ring has an annular distribution groove, the upper end face of the follower ring has an annular liquid inlet groove, and the lower end face of the follower ring has a circumferential liquid guiding hole. One end of the liquid guiding hole is connected to the annular distribution cavity, and the other end of the liquid guiding hole is connected to the inclined nozzle. When machining the gear head, the cutting fluid enters the inlet through the liquid hose, first flowing into the liquid storage chamber of the mounting ring, then flowing evenly along the annular distribution groove into the annular liquid inlet groove of the follower ring, and finally entering the liquid storage chamber inside the follower ring. It is then delivered to the corresponding inclined nozzle through each liquid guiding hole, ensuring that the liquid outlet pressure of all inclined nozzles is consistent, avoiding uneven liquid output from nozzles at different positions, and improving the uniformity of cooling and chip removal.

[0007] The cutting components include a drive source, a spindle, and a milling cutter. The drive source is located inside the spindle housing. One end of the spindle is connected to the output end of the drive source, and the other end is connected to the milling cutter. The spindle passes through a mounting ring and is connected to a follower collar. When machining the gear head, after the cutting components move to the machining position, the operator starts the drive source through the control system. The drive source drives the spindle and the milling cutter to rotate, and the spindle drives the follower collar to rotate synchronously. The inclined nozzles on the follower collar also rotate synchronously to spray, ensuring that the cutting fluid is always sprayed at the cutting contact position between the milling cutter and the gear head. There is no need to set up an additional power component to drive the nozzles to rotate, realizing synchronous spraying with the machining rotation, simplifying the device structure while ensuring cooling and chip removal effects.

[0008] The machine bed is equipped with a lifting component. The output end of the lifting component is connected to the spindle box. The spindle box is equipped with a lifting knob and a drive switch. The lifting knob and the lifting component are electrically connected, and the drive switch is electrically connected to the drive source. When machining the gear head, the operator can rotate the lifting knob to control the lifting component to drive the spindle box to adjust its height, thereby accurately adjusting the depth of cut of the cutting component. Pressing the drive switch can easily start or stop the drive source. The operation is intuitive and simple, allowing the operator to control the machining process at any time.

[0009] The vibration-damping clamping mechanism includes a clamping base, a bidirectional ball screw, a left slider, a right slider, and clamping components. The clamping base is mounted on a movable slide, and the bidirectional ball screw is mounted on the clamping base. The bidirectional ball screw is connected to a second drive source. Both the left and right sliders are threadedly connected to the bidirectional ball screw, and each of the left and right sliders is equipped with a clamping component. Before processing the gear head, the operator places the gear head to be processed between the two clamping components. Then, through the operation control system, the second drive source is activated, which drives the bidirectional ball screw to rotate, causing the left and right sliders to move synchronously towards each other along the screw. This causes the two clamping components to move closer to each other, clamping and fixing the gear head from both sides. This mechanism is suitable for clamping gear heads of different sizes, and the clamping operation is convenient.

[0010] The clamping component includes V-shaped jaws, which are mounted on the left and right sliders. The V-shaped jaws are equipped with shock-absorbing pads. When clamping and fixing the gear head, the V-shaped jaws conform to the outer contour of the gear head. When two opposing V-grooves clamp a cylinder, two contact lines are generated between the cylindrical surface and each V-shaped surface, forming four symmetrical constraint lines on both sides. Under this geometric constraint, regardless of the slight fluctuations in the diameter of the gear shaft within the tolerance range, its central axis will be locked on the geometric center line of the V-shaped jaws. This avoids errors caused by manual alignment, ensures repeatability and positioning accuracy, and guarantees clamping alignment. The shock-absorbing pads fill the contact gap between the jaws and the gear head, preventing the jaws from scratching the machined surface of the gear head through hard contact and absorbing vibrations generated during processing, reducing vibration transmission and improving machining accuracy.

[0011] The clamping component also includes an elastic damping shock absorber, which is disposed between the clamping base and the moving slide. When the gear head is being processed, the vibration generated during the processing is transmitted to the clamping base, and further absorbed and buffered by the elastic damping shock absorber to avoid resonance, further improve the stability of the processing, and extend the service life of the equipment components.

[0012] The movable slide includes a milling machine worktable and a support plate. The milling machine worktable is mounted on the machine bed and has guide rails. The support plate is slidably connected to the guide rails, and the fixture base is mounted on the support plate. After the anti-vibration clamping mechanism has completed the fixed clamping of the gear head, the operator drives the milling machine worktable to run through the control system. The milling machine worktable drives the support plate to slide along the guide rails, so that the gear head clamped on the support plate is smoothly transported to the processing position, ensuring that the gear head will not be displaced during the movement process and maintaining the clamping accuracy.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, through its cooperation with the spindle, follower collar, mounting ring, and tilting nozzles, allows the spindle to directly drive the follower collar to rotate coaxially during machining. Simultaneously, external cutting fluid flows through the annular distribution chamber and is evenly distributed in pressure within the various fluid guide holes of the follower collar. Finally, it is sprayed out through the circumferentially distributed tilting nozzles. Since the tilting nozzles rotate synchronously with the follower collar around the spindle and the milling cutter, the cutting fluid is always aligned with the real-time cutting position of the milling cutter and gear head, avoiding secondary cutting caused by chip residue and abnormal wear of the milling cutter. It also eliminates the cooling dead angle caused by the mutual obstruction between the cutter body and the workpiece, achieving 360° continuous flushing without dead angles.

[0014] 2. This invention utilizes a bidirectional ball screw, left and right sliders, and V-shaped grippers in conjunction. During workpiece clamping, the left and right sliders move synchronously towards each other along the screw, driving the V-shaped grippers to clamp and fix the gear head. Due to the geometric constraints of the two V-grooves, the workpiece's central axis is locked on the geometric center line of the fixture, ensuring that the gear head's axis is always coaxial with the spindle. This avoids the problem of eccentric machining caused by traditional single-sided clamping or inaccurate clamping and positioning, ensuring the machining accuracy of the gear head. At the same time, the V-shaped gripper's clamping structure is adaptable to gear head blanks of different sizes and specifications, simplifying clamping operations and improving positioning efficiency. With the addition of shock-absorbing pads, it can absorb vibrations generated during processing, preventing the gear head from vibrating and shifting during processing, further improving machining accuracy. Attached Figure Description

[0015] Figure 1 This is an overall structural diagram of the present invention; Figure 2 This is a partial structural diagram of the follow-up spray cutting device of the present invention; Figure 3 This is a partial cross-sectional view of the follow-up spray cutting device of the present invention; Figure 4 This is a structural diagram of the position of the follow-up spray cutting device of the present invention; Figure 5 For the present invention Figure 4 A magnified view of a portion of region A in the middle; Figure 6 This is a structural diagram of the vibration-damping clamping mechanism of the present invention; Figure 7 This is a structural diagram of the movable slide of the present invention.

[0016] In the diagram: 1. Bed; 11. Spindle box; 111. Lifting knob; 112. Drive switch; 12. Lifting component; 2. Follow-up spray cutting device; 21. Follow-up spray component; 211. Mounting ring; 2111. Liquid inlet; 2112. Annular distribution groove; 212. Follow-up collar; 2121. Annular liquid inlet groove; 2122. Liquid guide hole; 213. Liquid hose; 214. Inclined nozzle; 22. Cutting... 222. Spindle; 223. Milling cutter; 23. Annular distribution cavity; 3. Moving slide; 31. Milling machine worktable; 32. Bearing plate; 33. Guide rail; 4. Anti-vibration clamping mechanism; 41. Fixture base; 42. Bidirectional ball screw; 43. Left slider; 44. Right slider; 45. Clamping component; 451. V-shaped jaw; 452. Vibration damping pad; 46. Elastic damping vibration damping component; 47. Drive source two. 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] Example: Figures 1-7 As shown, the present invention provides a technical solution: a CNC milling machine for gear head machining, comprising a bed 1, a follow-up spray cutting device 2, a movable slide 3, and an anti-vibration clamping mechanism 4. The bed 1 is internally equipped with a lifting component 12, the output end of which is connected to a spindle box 11. The spindle box 11 is equipped with a lifting knob 111 and a drive switch 112. The lifting knob 111 and the lifting component 12 are electrically connected, and the drive switch 112 is electrically connected to a drive source. During gear head machining, the operator can rotate the lifting knob 111 to control the lifting component 12 to drive the spindle box 11 for lifting and adjusting, thereby precisely adjusting the depth of cut of the cutting component 22. Pressing the drive switch 112 allows for convenient start or stop of the drive source. The operation is intuitive and simple, allowing the operator to control the machining process at any time.

[0019] The follow-up spray cutting device 2 includes a follow-up spray component 21 and a cutting component 22. The follow-up spray component 21 includes a mounting ring 211, a follow-up collar 212, and a liquid hose 213. The mounting ring 211 is located on the lower end face of the spindle box 11. The cutting component 22 coaxially passes through the mounting ring 211 and is connected to the follow-up collar 212. The follow-up collar 212 is fitted inside the mounting ring 211. Both the mounting ring 211 and the follow-up collar 212 have liquid storage chambers. The liquid storage chambers of ring 211 and follower collar 212 are interconnected to form an annular distribution chamber 23. The mounting ring 211 is provided with an inlet 2111 communicating with the annular distribution chamber 23. A liquid hose 213 is connected to the inlet 2111. The follower collar 212 is circumferentially provided with inclined nozzles 214, and several inclined nozzles 214 are connected to the annular distribution chamber 23. The cutting component 22 is connected to the spindle box 11. During gear head machining, the operator controls the process via the operating system. The system drives the moving slide 3 to move. When it moves directly below the follow-up spray cutting device 2, the moving slide 3 stops moving. Then, the operator drives the spindle box 11 on the machine bed 1 to move downward through the control system. The follow-up spray cutting device 2 moves downward synchronously with the spindle box 11. When it moves to the machining position, the operator drives the cutting component 22 to move through the control system. The cutting component 22 rotates, which drives the follower collar 212 to rotate. At the same time, the external cutting fluid is delivered to the inlet 2111 through the liquid hose 213 and enters the annular distribution chamber 23. After the cutting fluid is evenly distributed through the annular distribution chamber 23, it is sprayed out from the inclined nozzles 214 set around the follower collar 212. The cutting fluid is guided by the inclined nozzles 214 and sprayed directly onto the cutting position of the gear head. It is sprayed synchronously with the rotation of the cutting component 22 to achieve a thorough cleaning without dead angles. It can promptly remove the cutting heat and chips generated during machining and avoid the accumulation of chips on the machining surface, which affects the machining accuracy.

[0020] The mounting ring 211 has an annular distribution groove 2112, and the upper end face of the follower ring 212 has an annular liquid inlet groove 2121. The lower end face of the follower ring 212 has a circumferential liquid guiding hole 2122. One end of the liquid guiding hole 2122 is connected to the annular distribution cavity 23, and the other end of the liquid guiding hole 2122 is connected to the inclined nozzle 214. When machining the gear head, the cutting fluid enters the inlet 2111 through the liquid hose 213. It first flows into the liquid storage chamber of the mounting ring 211, and then flows evenly along the annular distribution groove 2112 into the annular liquid inlet groove 2121 of the follower ring 212. Finally, it enters the liquid storage chamber in the follower ring 212 and is then delivered to the corresponding inclined nozzle 214 through each liquid guiding hole 2122. This ensures that the liquid outlet pressure of all inclined nozzles 214 is consistent, avoids uneven liquid output from nozzles at different positions, and improves the uniformity of cooling and chip removal.

[0021] The cutting component 22 includes a drive source, a spindle 222, and a milling cutter 223. The drive source is located inside the spindle housing 11. One end of the spindle 222 is connected to the output end of the drive source, and the other end of the spindle 222 is connected to the milling cutter 223. The spindle 222 passes through the mounting ring 211 and is connected to the follower collar 212. When machining the gear head, after the cutting component 22 moves to the machining position, the operator starts the drive source through the control system. The drive source drives the spindle 222 and the milling cutter 223 to rotate. The spindle 222 drives the follower collar 212 to rotate synchronously. The inclined nozzle 214 on the follower collar 212 also rotates synchronously to spray, so that the cutting fluid is always sprayed at the cutting contact position between the tool and the gear head. There is no need to set up an additional power component to drive the nozzle to rotate, realizing synchronous spraying with the machining rotation, simplifying the device structure while ensuring the cooling and chip removal effect.

[0022] The movable slide 3 includes a milling machine worktable 31 and a support plate 32. The milling machine worktable 31 is mounted on the bed 1 and is equipped with a guide rail 33. The support plate 32 is slidably connected to the guide rail 33. The fixture base 41 is mounted on the support plate 32. After the anti-vibration clamping mechanism 4 has completed the fixed clamping of the gear head, the operator drives the milling machine worktable 31 to run through the control system. The milling machine worktable 31 drives the support plate 32 to slide along the guide rail 33, so that the gear head clamped on the support plate 32 is smoothly transported to the processing position, ensuring that the gear head will not be displaced during the movement process and maintaining the clamping accuracy.

[0023] The vibration-resistant clamping mechanism 4 includes a clamping base 41, a bidirectional ball screw 42, a left slider 43, a right slider 44, and clamping components 45. The clamping base 41 is mounted on the movable slide table 3, and the bidirectional ball screw 42 is mounted on the clamping base 41. The bidirectional ball screw 42 is connected to the second drive source 47. The left slider 43 and the right slider 44 are both threadedly connected to the bidirectional ball screw 42. Each of the left slider 43 and the right slider 44 is equipped with a clamping component 45. Before processing the gear head, the operator places the gear head to be processed between the two clamping components 45. Then, through the operation control system, the second drive source 47 is started. The second drive source 47 drives the bidirectional ball screw 42 to rotate, causing the left slider 43 and the right slider 44 to move synchronously towards each other along the screw, causing the two clamping components 45 to move closer to each other and clamp the gear head from both sides. It is suitable for clamping gear heads of different sizes, and the clamping operation is convenient.

[0024] The clamping component 45 includes a V-shaped jaw 451, which is disposed on the left slider 43 and the right slider 44. A damping pad 452 is provided on the V-shaped jaw 451. When clamping and fixing the gear head, the V-shaped jaw 451 can conform to the outer contour of the gear head. When two opposing V-grooves clamp a cylinder, two contact lines are generated between the cylindrical surface and each V-shaped surface, forming four symmetrical constraint lines on both sides. Under this geometric constraint, regardless of the slight fluctuation in the diameter of the gear shaft within the tolerance range, its central axis will be locked on the geometric center line of the V-shaped jaw 451. This avoids errors caused by manual alignment, ensures repeatability and positioning accuracy, and guarantees clamping alignment. The damping pad 452 can fill the contact gap between the jaw and the gear head, preventing the jaw from scratching the gear head's machining surface through hard contact, and absorbing vibrations generated during machining, reducing vibration transmission and improving machining accuracy.

[0025] The clamping component 45 also includes an elastic damping shock absorber 46, which is disposed between the clamping base 41 and the movable slide 3. When the gear head is processed, the vibration generated during the processing is transmitted to the clamping base 41 and further absorbed and buffered by the elastic damping shock absorber 46 to avoid resonance, further improve the stability of the processing, and extend the service life of the equipment components.

[0026] Working principle of the invention: Before gear processing, the operator places the gear to be processed between the two clamping components 45 of the anti-vibration clamping mechanism 4. Then, through the operation control system, the second drive source 47 is started. The second drive source 47 drives the bidirectional ball screw 42 set on the fixture base 41 to rotate. Under the transmission of the bidirectional ball screw 42, the left slider 43 and the right slider 44, which are threaded to it, move synchronously towards each other along the screw. The left slider 43 and the right slider 44 drive the two clamping components 45 on them to move closer to each other. The V-shaped jaw 451 fits against the outer contour of the gear and clamps it. Through geometric constraints, the gear shaft is automatically locked on the geometric center line of the V-shaped jaw 451, completing the centering and clamping.

[0027] After the gear is fixed, the operator drives the milling machine table 31 of the moving slide 3 through the control system. The milling machine table 31 drives the bearing plate 32 to slide along the guide rail 33, which drives the fixture base 41 and gear set on the bearing plate 32 to move smoothly. When the gear moves with the moving slide 3 to the bottom of the spindle box 11 and directly below the follow-up spray cutting device 2, the moving slide 3 stops moving.

[0028] The operator rotates the lifting knob 111 on the spindle box 11. The lifting knob 111 electrically controls the operation of the lifting component 12 inside the bed 1. The lifting component 12 drives the spindle box 11 to move downward. The follow-up spray cutting device 2 moves downward synchronously with the spindle box 11 and is adjusted to the required machining position of the cutting component 22.

[0029] After adjusting to the preset machining position, the operator presses the drive switch 112 on the spindle box 11 to start the drive source inside the cutting component 22. The drive source drives the spindle 222 and the milling cutter 223 to rotate, and performs cutting machining on the gear head. The rotating spindle 222 drives the follower collar 212 connected to it to rotate synchronously inside the mounting ring 211, so that the circumferentially distributed inclined nozzles 214 of the follower collar 212 rotate synchronously.

[0030] At the same time, external cutting fluid is delivered to the inlet 2111 of the mounting ring 211 through the liquid hose 213, enters the liquid storage chamber of the mounting ring 211, and flows evenly into the annular inlet groove 2121 of the follower ring 212 along the annular distribution groove 2112 of the mounting ring 211, and enters the annular distribution chamber 23 formed by the connection of the two ring liquid storage chambers.

[0031] After the cutting fluid is evenly distributed in the annular distribution chamber 23, it is delivered to the corresponding inclined nozzle 214 through the fluid guide holes 2122 on the lower end face of the follower collar 212. It is sprayed out under the same pressure. The rotating inclined nozzle 214 sprays the cutting fluid directly and continuously at the cutting contact position between the milling cutter 223 and the gear head, and performs synchronous follower spraying to remove cutting heat and wash away chips.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A CNC milling machine for machining gear heads, characterized in that: The device includes a bed (1), a follow-up spray cutting device (2), a movable slide (3) and an anti-vibration clamping mechanism (4). The movable slide (3) is mounted on the bed (1), and the anti-vibration clamping mechanism (4) is mounted on the movable slide (3). The bed (1) is equipped with a spindle box (11). The follow-up spray cutting device (2) includes a follow-up spray component (21) and a cutting component (22). The follow-up spray component (21) includes a mounting ring (211), a follow-up collar (212), and a liquid hose (213). The mounting ring (211) is located on the lower end face of the spindle box (11). The cutting component (22) coaxially passes through the mounting ring (211) and is connected to the follow-up collar (212). The follow-up collar (212) is fitted inside the mounting ring (211). Both the mounting ring (211) and the follow-up collar (212) have liquid storage chambers. The liquid storage chambers of (211) and the follower collar (212) are interconnected to form an annular distribution chamber (23). The mounting ring (211) is provided with an inlet (2111) that communicates with the annular distribution chamber (23). The liquid hose (213) is connected to the inlet (2111). The follower collar (212) is provided with an inclined nozzle (214) in the circumferential direction. Several inclined nozzles (214) are connected to the annular distribution chamber (23). The cutting component (22) is connected to the spindle box (11).

2. The CNC milling machine for gear head machining according to claim 1, characterized in that: The mounting ring (211) is provided with an annular distribution groove (2112), the upper end face of the follower collar (212) is provided with an annular liquid inlet groove (2121), and the lower end face of the follower collar (212) is provided with a liquid guiding hole (2122) circumferentially. One end of the liquid guiding hole (2122) is connected to the annular distribution cavity (23), and the other end of the liquid guiding hole (2122) is connected to the inclined nozzle (214).

3. A CNC milling machine for gear head machining according to claim 2, characterized in that: The cutting component (22) includes a drive source, a spindle (222) and a milling cutter (223). The drive source is located inside the spindle box (11). One end of the spindle (222) is connected to the output end of the drive source, and the other end of the spindle (222) is connected to the milling cutter (223). The spindle (222) passes through the mounting ring (211) and is connected to the follower collar (212).

4. A CNC milling machine for gear head machining according to claim 3, characterized in that: The bed (1) is equipped with a lifting component (12), the output end of which is connected to the spindle box (11). The spindle box (11) is equipped with a lifting knob (111) and a drive switch (112).

5. A CNC milling machine for gear head machining according to claim 1, characterized in that: The vibration-damping clamping mechanism (4) includes a clamp base (41), a bidirectional ball screw (42), a left slider (43), a right slider (44), and a clamping component (45). The clamp base (41) is mounted on a movable slide (3). The bidirectional ball screw (42) is mounted on the clamp base (41). The bidirectional ball screw (42) is connected to a second drive source (47). The left slider (43) and the right slider (44) are both threadedly connected to the bidirectional ball screw (42). The left slider (43) and the right slider (44) are both equipped with clamping components (45).

6. A CNC milling machine for gear head machining according to claim 5, characterized in that: The clamping component (45) includes a V-shaped gripper (451), which is disposed on the left slider (43) and the right slider (44), and a shock-absorbing pad (452) is disposed on the V-shaped gripper (451).

7. A CNC milling machine for gear head machining according to claim 6, characterized in that: The clamping component (45) further includes an elastic damping shock absorber (46), which is disposed between the clamp base (41) and the movable slide (3).

8. A CNC milling machine for gear head machining according to claim 7, characterized in that: The movable slide (3) includes a milling machine worktable (31) and a support plate (32). The milling machine worktable (31) is mounted on the bed (1). A guide rail (33) is mounted on the milling machine worktable (31). The support plate (32) is slidably connected to the guide rail (33). The fixture base (41) is mounted on the support plate (32).

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