A cutter head rotation structure of a numerical control gear hobbing machine

Abstract

The application provides a cutter head rotating structure of a numerical control gear rolling machine, and belongs to the technical field of numerical control gear rolling machines, which comprises a base, a gear blank clamping structure is arranged on the upper surface of the right side of the base, a cutter head mounting box is movably mounted on the upper surface of the left side of the base through a driving device and a track, limit support plates are arranged on the front and rear sides of the inner bottom of the cutter head mounting box, movable boxes are movably connected to the upper end of the limit support plates through balls, and telescopic air cylinders are arranged on the rear end of the upper surface of the movable boxes; two moving plates two are arranged on the threaded rod one, the distance between the two moving plates two can be adjusted, more gear rolling cutter heads with different lengths can be clamped and fixed, the straight gear four and the toothed plate can drive the moving plate two to move horizontally, the distance between the gear rolling cutter head and the right outer wall of the cutter head mounting box can be changed, gear rolling cutter heads with different widths can be replaced, the application range of the device is improved, the device is more practical, and is more flexible to use.

Description

Technical Field

[0001] This invention belongs to the field of CNC gear hobbing machine technology, specifically a rotary cutter head structure for a CNC gear hobbing machine. Background Technology

[0002] CNC gear hobbing machines are the most widely used type of gear processing machine tools. They mainly use hobs to process spur and helical cylindrical gears using the generating method, and can also process worm gears, sprockets, etc.

[0003] However, the existing CNC gear hobbing machine's cutter head rotation mechanism is not easy to replace, making it impossible to process gears of different depths and sizes. This is because the distance between the existing gear hobbing cutter head and the outer wall of the cutter head mounting box is fixed, meaning that even if the gear hobbing cutter head can be replaced, only a smaller width can be used, limiting its applicability. Furthermore, the gear hobbing cutter head requires additional equipment for disassembly and assembly, which is cumbersome and inefficient, and also makes subsequent cleaning more difficult.

[0004] Therefore, we propose a rotary cutter head structure for CNC gear hobbing machines to solve the problems encountered above. Summary of the Invention

[0005] The purpose of this invention is to solve the problems of the difficulty in replacing the cutter head rotation mechanism of existing CNC gear hobbing machines, which makes it impossible to process gears of different depths and sizes. Because the distance between the existing gear hobbing cutter head and the outer wall of the cutter head mounting box is fixed, even if the gear hobbing cutter head can be replaced, only a smaller width gear hobbing cutter head can be replaced, which limits the scope of application. In addition, the gear hobbing cutter head needs to be disassembled and installed with additional equipment, which is troublesome and inefficient. Therefore, subsequent cleaning is also troublesome. This invention proposes a cutter head rotation structure for CNC gear hobbing machines.

[0006] The objective of this invention can be achieved through the following technical solution: A base is included, with a blank clamping structure provided on the upper right surface of the base. A cutter head mounting box is movably mounted on the upper left surface of the base via a driving device and a track. Limiting support plates are provided on both the front and rear sides of the bottom of the cutter head mounting box. A movable box is movably connected to the upper end of the limiting support plates via ball bearings. A telescopic cylinder is provided at the rear end of the upper surface of the movable box. A movable plate is provided at the front end of the telescopic cylinder. A sleeve rod is rotatably mounted inside the lower end of the movable plate. The front end of the sleeve rod is fixed by an annular block. A gear ring is fixedly connected, and a spur gear 1 is engaged at the front end of the gear ring. A rotating shaft 2 is provided at the front end of the spur gear 1, and the front end of the rotating shaft 2 is rotatably installed inside the movable box. A spur gear 2 and a spur gear 4 are arranged sequentially from front to back on the circumferential surface of the sleeve rod. A toothed plate matching the spur gear 4 is provided on the lower rear side of the spur gear 4, and the toothed plate is fixedly installed inside the movable box. A spur gear 3 matching the spur gear 2 is provided at the rear right side of the spur gear 2. A threaded rod 1 is provided in the middle of the spur gear 3, and the threaded rod 1 is rotatably installed on the outer right side wall of the movable box.

[0007] In a preferred embodiment of the present invention, a motor is provided inside the rear side of the movable box, and a rotating shaft is driven to the power output end of the motor. The circumferential surface of the rotating shaft is slidably connected to the inside of the sleeve rod through a cross connecting plate.

[0008] In a preferred embodiment of the present invention, the circumferential surfaces of the front and rear sides of the threaded rod are provided with threads in opposite directions. The circumferential surfaces of both the front and rear ends of the threaded rod are threadedly connected to the movable plate two. The right end of the front movable plate two is rotatably mounted with a rotating shaft three, and the right end of the rear movable plate two is rotatably mounted with a driven shaft. The rotating shaft three and the driven shaft are both connected to a gear hobbing cutter head through a cross-shaped insert.

[0009] In a preferred embodiment of the present invention, a sprocket is slidably connected to the circumferential surface of the second rotating shaft via a cross connecting plate, the first sprocket is connected to the second sprocket via a toothed chain drive, and the second sprocket is disposed on the circumferential surface of the third rotating shaft.

[0010] In a preferred embodiment of the present invention, the two movable plates 2 are provided with sliding grooves on their front and rear sides, and sliders are slidably installed inside the four sliding grooves. A bellows cover is provided on the outer side of the slider. A movable groove 1 is provided on the right side wall of the cutter head mounting box. The bellows cover is located inside the movable groove 1. The left side of the rear movable plate 2 passes through the movable groove 1 and extends into the interior of the cutter head mounting box. A movable groove 2 is provided at the front right side of the movable box. The left side of the front movable plate 2 passes through the movable groove 1 and the movable groove 2 and extends into the interior of the movable box. The front movable plate 2 is slidably installed on the circumferential surface of the rotating shaft 2.

[0011] In a preferred embodiment of the present invention, the bottom of the movable box is provided with a through groove, the upper end of the toothed plate is disposed inside the through groove, the upper end of the movable box is provided with a movable groove one, the lower end of the movable plate one is disposed inside the movable groove one, the right side wall of the movable box is provided with a movable groove two, and the left side of the spur gear three is disposed inside the movable groove two.

[0012] In a preferred embodiment of the present invention, a threaded rod two is rotatably mounted in the middle of the right end of the cutter head mounting box. The upper end of the threaded rod two passes through the cutter head mounting box and is fixedly connected to a knob. A lifting plate one is threadedly connected to the circumferential surface of the lower end of the threaded rod two. A U-shaped mounting plate is provided on the right side of the lifting plate one. A motor two is provided at the left rear end of the U-shaped mounting plate. The power output end of the motor two is connected to a cleaning brush through a synchronous belt drive. The cleaning brush is rotatably mounted inside the right side of the U-shaped mounting plate. The cleaning brush is located directly below the gear hobbing cutter head.

[0013] In a preferred embodiment of the present invention, a lifting plate two is threadedly connected to the circumferential surface of the lower end of the threaded rod two, and the lifting plate two is located above the lifting plate one. A sealing plate is provided on the right side of the lifting plate two, and a lifting groove is opened at the lower right end of the cutter head mounting box. The upper end of the sealing plate is located inside the lifting groove.

[0014] In a preferred embodiment of the present invention, a positioning rod is provided inside the right side of the cutter head mounting box. The lower end of the positioning rod passes through the second lifting plate and the first lifting plate and extends to the bottom of the first lifting plate. A stop block is provided at the lower end of the second threaded rod, and the stop block is located below the first lifting plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] (1) By setting two movable plates on the threaded rod, the distance between the two movable plates can be adjusted, and more hobbing cutter discs of different lengths can be clamped and fixed. Through the set spur gear four and toothed plate, the movable plates can be moved horizontally, thereby changing the distance between the hobbing cutter disc and the outer right wall of the cutter disc mounting box. It is possible to replace hobbing cutter discs of different widths, which improves the applicability of this device, makes it more practical, and makes it more flexible to use.

[0017] (2) By switching the engagement state of the gear ring and the spur gear one, and the meshing state of the spur gear two and the spur gear three at any time, it is possible to perform gear hobbing or adjust the two moving plates two to move back and forth to clamp and fix or loosen to replace the cutter head. The operation is simple and quick, and there is no need to set up a lot of driving parts, which reduces the space occupied and makes the device lighter.

[0018] (3) With the cleaning brush set, after the cutter disc finishes working, the second threaded rod is rotated to drive the cleaning brush to move upward to contact the bottom of the cutter disc. Then the second motor drives the cleaning brush to rotate and clean the surface of the cutter disc, sweeping away the impurities attached to the surface of the cutter disc and improving the subsequent gear rolling effect. Attached Figure Description

[0019] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a perspective view of the present invention.

[0022] Figure 3 This is a left sectional perspective view of the cutter head mounting box of the present invention;

[0023] Figure 4 This is a top sectional perspective view of the present invention;

[0024] Figure 5 For the present invention Figure 4 Enlarged view of the structure at point A in the middle;

[0025] Figure 6 This is a schematic diagram of the internal structure of the blade mounting box of the present invention;

[0026] Figure 7 This is a schematic diagram of the internal structure of the active box of the present invention;

[0027] Figure 8 This is a partial cross-sectional view of the cleaning brush of the present invention.

[0028] In the diagram: 1. Base; 2. Gear blank clamping structure; 3. Cutter head mounting box; 4. Limiting support plate; 5. Movable box; 6. Ball bearing; 7. Motor 1; 8. Rotary shaft 1; 9. Sleeve rod; 10. Moving plate 1; 11. Telescopic cylinder; 12. Gear ring; 13. Spur gear 1; 14. Rotary shaft 2; 15. Cross connecting plate; 16. Sprocket 1; 17. Sprocket 2; 18. Rotary shaft 3; 19. Hobbing cutter head; 20. Spur gear 2; 21. Spur gear 3; 22. Threaded rod 1; 23. Moving plate two; 24. Driven shaft; 25. Bellows cover; 26. Slider; 27. Slide groove; 28. Moving groove one; 29. ​​Threaded rod two; 30. Lifting plate one; 31. C-shaped mounting plate; 32. Motor two; 33. Cleaning brush; 34. Lifting plate two; 35. Sealing plate; 36. Lifting groove; 37. Positioning rod; 38. Stop block; 39. Through groove; 40. Movable groove one; 41. Movable groove two; 42. Moving groove two; 43. Spur gear four; 44. Gear plate. Detailed Implementation

[0029] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. 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.

[0030] Example 1:

[0031] Please see Figure 1 - Figure 8 As shown, a rotary cutter head structure for a CNC gear hobbing machine includes a base 1. A blank clamping structure 2 is provided on the upper right surface of the base 1. The blank clamping structure 2 consists of a bottom placement seat and a top clamping seat, which can clamp and fix the blank. A rotary motor is connected to the upper end of the top clamping seat, and a hydraulic lifting cylinder is connected above the rotary motor, which can drive the top clamping seat lifting box to rotate, thereby facilitating the clamping, fixing, and rotation of the blank during gear hobbing. A cutter head mounting box 3 is movably mounted on the upper left surface of the base 1 via a drive device and a track. The drive device is existing technology and will not be described in detail. It can drive the cutter head mounting box 3 to move horizontally left and right. Limiting support plates 4 are provided on both the front and rear sides of the bottom of the cutter head mounting box 3. The upper end of the limiting support plates 4 is movably connected to the movable box 5 via ball bearings 6, improving the stability of the cutter head mounting box 3 and enabling it to move horizontally left and right stably. A motor 7 is installed inside the rear side of the movable box 5. The power output end of the motor 7 is connected to the rotating shaft 8 via a coupling. A [missing information - likely a device or component] is installed at the rear end of the upper surface of the movable box 5. A telescopic cylinder 11 has a movable plate 10 at its front end. A sleeve rod 9 is rotatably mounted inside the lower end of the movable plate 10. The circumferential surface of the rotating shaft 8 is slidably connected to the inside of the sleeve rod 9 via a cross connecting plate 15. The cross connecting plate 15 allows the sleeve rod 9 to move horizontally back and forth on the rotating shaft 8 without affecting the rotation of the sleeve rod 9 when the rotating shaft 8 rotates. A gear ring 12 is fixedly connected to the front end of the sleeve rod 9 via an annular block. A spur gear 13 is engaged at the front end of the gear ring 12. The annular block is... This ensures that when the sleeve rod 9 moves forward, the front end of the sleeve rod 9 will not collide with the spur gear 13, providing a locking space for the gear ring 12, so that the gear ring 12 can smoothly lock with the spur gear 13. The front end of the spur gear 13 is provided with a rotating shaft 2 14, and the front end of the rotating shaft 2 14 is rotatably installed inside the movable box 5. The circumferential surface of the rotating shaft 2 14 is slidably connected to the sprocket 16 through the cross connecting plate 15. The sprocket 16 is connected to the sprocket 2 17 through the tooth chain drive. The sprocket 2 17 is set on the circumferential surface of the rotating shaft 3 18.

[0032] It should be noted that sprocket 16, the toothed chain, and sprocket 2 17 are all located inside the front moving plate 10. At the same time, sprocket 16 is connected to the rotating shaft 2 14 through the cross connecting plate 15. That is, when the rotating shaft 2 14 rotates, it can drive sprocket 16 to rotate through the cross connecting plate 15. When the threaded rod 22 rotates, it drives the moving plate 10 to move horizontally back and forth. The moving plate 10 can synchronously drive sprocket 16, the toothed chain, and sprocket 2 17 to move horizontally back and forth. This allows sprocket 16 to move horizontally back and forth on the cross connecting plate 15 without affecting the fact that after sprocket 16 stops moving, the rotating shaft 2 14 can still drive sprocket 16 to rotate through the cross connecting plate 15.

[0033] The circumferential surface of the sleeve rod 9 is provided with spur gear 20 and spur gear 43 sequentially from front to back. A toothed plate 44 matching spur gear 43 is provided on the lower rear side of spur gear 43, and the toothed plate 44 is fixedly installed inside the movable box 5. A spur gear 3 21 matching spur gear 20 is provided on the right rear end of spur gear 20. A threaded rod 22 is provided in the middle of spur gear 3 21, and the threaded rod 22 is rotatably mounted on the right outer wall of the movable box 5. The circumferential surfaces on the front and rear sides of the threaded rod 22 are provided with threads in opposite directions. The circumferential surfaces at both ends of the threaded rod 22 are threaded together. The movable plate 23 has a rotating shaft 3 18 rotatably mounted inside the right end of the front movable plate 23 and a driven shaft 24 rotatably mounted inside the right end of the rear movable plate 23. Both the rotating shaft 3 18 and the driven shaft 24 are connected to the hobbing cutter 19 through cross-shaped inserts. The opposite threads on the front and rear sides of the threaded rod 22 allow the two movable plates 23 on its surface to move closer to each other and clamp and fix the hobbing cutter 19 when the threaded rod 22 rotates. The two movable plates 23 can also move away from each other and lose the clamping and fixing effect on the hobbing cutter 19, which facilitates the disassembly and replacement of the hobbing cutter 19.

[0034] It should be noted that when the sleeve rod 9 moves horizontally backward, causing spur gear 20 to mesh with spur gear 3 21, the gear ring 12 will disengage from spur gear 1 13. At this time, spur gear 43 is also not meshing with the gear plate 44. Now, when motor 7 drives the sleeve rod 9 to rotate via shaft 8 and cross connecting plate 15, it will only drive spur gear 20 and spur gear 3 21 to rotate through the sleeve rod 9, and will not drive spur gear 1 13 to rotate through the gear ring 12. Then, as the sleeve rod 9 continues to move backward until spur gear 43 meshes with the gear plate 44, spur gear 20 will also disengage from spur gear 3 21. At this point, when the sleeve rod 9 rotates, it will only drive spur gear 20 and spur gear 3 21 to rotate. It will drive spur gear 43 to rotate, but will not drive spur gear 321 to rotate through spur gear 20. Spur gear 20, gear ring 12 and spur gear 43 have the same number of teeth, so that when the sleeve rod 9 rotates, it can drive spur gear 20, gear ring 12 and spur gear 43 to rotate with the same amplitude. Then, no matter how spur gear 20, gear ring 12 and spur gear 43 rotate, after the sleeve rod 9 moves horizontally back and forth, gear ring 12 can always engage with spur gear 13, spur gear 20 can always mesh with spur gear 321, and spur gear 43 can always mesh with gear plate 44.

[0035] Both sides of the two movable plates 23 are provided with sliding grooves 27. Sliding blocks 26 are slidably installed inside each of the four sliding grooves 27. Bellows covers 25 are provided on the outer side of the sliding blocks 26. A movable groove 28 is provided on the right side wall of the cutter head mounting box 3. The sliding grooves 27 provide space for the sliding blocks 26 to move, ensuring that the bellows covers 25 do not move horizontally with the movable plates 23. This allows the bellows covers 25 to be installed on the movable plates 23 without affecting their horizontal movement. The bellows covers 25 are located in the movable groove. Inside the first 28, the left side of the rear movable plate 23 passes through the movable groove 28 and extends into the interior of the cutter head mounting box 3. The right front end of the movable box 5 has a movable groove 42. The left side of the front movable plate 23 passes through the movable groove 28 and the movable groove 42 and extends into the interior of the movable box 5. The front movable plate 23 is slidably mounted on the circumferential surface of the rotating shaft 14. The setting of the movable groove 28 provides space for the movable plate 23 to move horizontally back and forth, so that when the thread rod 22 rotates, the movable plate 23 can move horizontally back and forth inside the movable groove 28.

[0036] It should be noted that the second movable plate 23 can move a certain distance within the first movable groove 28, thereby clamping and fixing the hobbing cutter head 19 within a certain length. Furthermore, through the arrangement of the fourth spur gear 43 and the gear plate 44, the second movable plate 23 can be driven to move horizontally a certain distance, thereby clamping and fixing the hobbing cutter head 19 within a certain width. This increases the applicability of the hobbing cutter head 19 to the machining of gear teeth of different depths and sizes.

[0037] The bottom of the movable box 5 has a through groove 39, and the upper end of the toothed plate 44 is located inside the through groove 39. The through groove 39 provides space for the toothed plate 44 to move, so that the movable box 5 will not collide with the toothed plate 44 when it moves horizontally left and right. The upper end of the movable box 5 has a movable groove 40, and the lower end of the movable plate 10 is located inside the movable groove 40. The movable groove 40 provides space for the movable plate 10 to move horizontally back and forth inside the movable box 5. The right side wall of the movable box 5 has a movable groove 41, and the left side of the spur gear 21 is located inside the movable groove 41. The movable groove 41 provides space for the spur gear 21 to move, so that the spur gear 21 can mesh stably with the spur gear 20 without affecting the rotation of the spur gear 21.

[0038] Example 2:

[0039] Please refer to the following: Figure 2 and Figure 8 As shown, a threaded rod 29 is rotatably mounted in the middle of the right side of the cutter head mounting box 3. The upper end of the threaded rod 29 passes through the cutter head mounting box 3 and is fixedly connected to a knob. A lifting plate 30 is threadedly connected to the circumferential surface of the lower end of the threaded rod 29. A U-shaped mounting plate 31 is provided on the right side of the lifting plate 30. A motor 32 is provided at the left rear end of the U-shaped mounting plate 31. The power output end of the motor 32 is connected to a cleaning brush 33 via a synchronous belt drive. The cleaning brush 33 is rotatably mounted inside the right side of the U-shaped mounting plate 31. The cleaning brush 33 is located directly below the gear hobbing cutter head 19. The cleaning brush 33 is made of flexible material to avoid the material being too hard and causing damage to the gear hobbing cutter head 19 during the cleaning process. The threaded rod 29 has a threaded connection to a lifting plate 34 on its lower circumferential surface. The lifting plate 34 is located above the lifting plate 30. A sealing plate 35 is provided on the right side of the lifting plate 34. A lifting groove 36 is provided at the lower right side of the cutter head mounting box 3. The upper end of the sealing plate 35 is located inside the lifting groove 36. The lifting groove 36 provides space for the sealing plate 35 to move, so that when the lifting plate 2 34 moves upward, it can smoothly drive the sealing plate 35 to move upward. At the same time, in the initial state, the sealing plate 35 can close the lifting groove 36 at the bottom right side of the cutter head mounting box 3, preventing impurities generated during the operation from entering the interior of the cutter head mounting box 3 through the lifting groove 36.

[0040] It should be noted that the lifting plate 30 and the lifting plate 34 have the same width, and the left sides of the lifting plate 30 and the lifting plate 34 are on the same horizontal plane. Therefore, when the threaded rod 29 rotates, the lifting plate 30 and the lifting plate 34 can move vertically synchronously. Furthermore, because the lower right side of the cutter head mounting box 3 has a groove the width of the lifting plate 34, the lifting plate 30 can move upward smoothly without colliding with the cutter head mounting box 3.

[0041] A positioning rod 37 is provided inside the right side of the cutter head mounting box 3. The lower end of the positioning rod 37 passes through the second lifting plate 34 and the first lifting plate 30 and extends to the bottom of the first lifting plate 30. The positioning rod 37 can limit the movement of the first lifting plate 30 and the second lifting plate 34, so that when the threaded rod 29 rotates, the first lifting plate 30 and the second lifting plate 34 can move vertically smoothly. A stop block 38 is provided at the lower end of the threaded rod 29, and the stop block 38 is located below the first lifting plate 30. The stop block 38 limits the lower end of the first lifting plate 30 and prevents the first lifting plate 30 from moving downward too much and disengaging from the threaded rod 29, which would affect the use of the first lifting plate 30.

[0042] In use, the tooth blank is clamped and fixed by the tooth blank clamping structure 2. Then, the motor 7 and the tooth blank clamping structure 2 are started. The tooth blank clamping structure 2 will drive the tooth blank to rotate. At the same time, the motor 7 drives the sleeve rod 9 and the tooth ring 12 to rotate through the rotating shaft 8 and the rear cross connecting plate 15. At this time, the tooth ring 12 is engaged with the spur gear 13, thereby driving the spur gear 13, the rotating shaft 2 14, the front cross connecting plate 15 and the sprocket 16 to rotate. The rotation of the sprocket 16 drives the sprocket 2 17, the rotating shaft 3 18 and the hobbing cutter 19 to rotate through the tooth chain, thus machining the cutting tooth blank.

[0043] When machining gears of different depths and sizes, first, check if the width of the new hobbing cutter head 19 will collide with the right side wall of the cutter head mounting box 3. If so, activate the telescopic cylinder 11. The telescopic cylinder 11 drives the moving plate 10 and the sleeve rod 9 to move horizontally backward, so that the spur gear 43 on the sleeve rod 9 meshes with the gear plate 44. Then, the motor 7 rotates, which, through the rotating shaft 8, the rear cross connecting plate 15, the sleeve rod 9, and the spur gear 43, rotates. The spur gear 43 rotates and meshes with the gear plate 44, applying a horizontal thrust, pushing the movable box 5 a certain distance to the right. This ensures that the new hobbing cutter head 19 will not collide with the cutter head mounting box 3 after installation. Then, stop moving. Next, the telescopic cylinder 11 drives the sleeve rod 9 to move horizontally forward, so that the spur gear 20 and spur gear 3... 1. Engagement: At this time, motor 7 starts working again, and sleeve 9 drives spur gear 21 and threaded rod 22 to rotate through spur gear 20. This causes the two moving plates 10 to move away from each other, so that the moving plates 10 lose their clamping and fixing effect on the hobbing cutter head 19. The old hobbing cutter head 19 is removed, and the new hobbing cutter head 19 is placed between the two moving plates 10. Motor 7 works in the opposite direction, so that the two moving plates 10 move closer to each other and clamp and fix the new hobbing cutter head 19, completing the cutter head replacement work. Then, the telescopic cylinder 11 is started, driving sleeve 9 to continue moving forward, so that the gear ring 12 engages with spur gear 13. At this time, motor 7 works and can drive shaft 2 14 to rotate, which in turn drives shaft 3 18 and hobbing cutter head 19 to rotate through sprocket transmission, cutting the gear blank.

[0044] After the gear blank is cut, rotate the threaded rod 29. The threaded rod 29 drives the lifting plate 30, the U-shaped mounting plate 31 and the cleaning brush 33 to move upward, so that the upper end of the cleaning brush 33 is in close contact with the lower end of the gear hobbing cutter 19. Then start the motor 7 and the motor 32. The motor 7 drives the gear hobbing cutter 19 to rotate slowly, and the motor 32 drives the cleaning brush 33 to rotate quickly through the synchronous belt, sweeping away any impurities that may be attached to the surface of the gear hobbing cutter 19, thus completing the cleaning work.

[0045] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A rotary cutter head structure for a CNC gear hobbing machine, comprising a base (1), wherein a gear blank clamping structure (2) is provided on the upper right side surface of the base (1), and a cutter head mounting box (3) is movably mounted on the upper left side surface of the base (1) via a drive device and a track, characterized in that, The cutter head mounting box (3) has limit support plates (4) on both the front and rear sides of its bottom. The upper end of the limit support plate (4) is movably connected to a movable box (5) via a ball bearing (6). A telescopic cylinder (11) is provided at the rear end of the upper surface of the movable box (5). A moving plate (10) is provided at the front end of the telescopic cylinder (11). A sleeve rod (9) is rotatably installed inside the lower end of the moving plate (10). A toothed ring (12) is fixedly connected to the front end of the sleeve rod (9) via an annular block. A spur gear (13) is engaged at the front end of the toothed ring (12). A rotating shaft (14) is provided at the front end of the spur gear (13). The front end of the rotating shaft 2 (14) is rotatably installed inside the movable box (5). The circumferential surface of the sleeve rod (9) is provided with spur gear 2 (20) and spur gear 4 (43) from front to back. The lower rear side of the spur gear 4 (43) is provided with a toothed plate (44) that matches the spur gear 4 (43), and the toothed plate (44) is fixedly installed inside the movable box (5). The rear right side of the spur gear 2 (20) is provided with a spur gear 3 (21) that matches the spur gear 2 (20). The middle of the spur gear 3 (21) is provided with a threaded rod 1 (22), and the threaded rod 1 (22) is rotatably installed on the outer right side of the movable box (5). The rear side of the movable box (5) is equipped with a motor (7), and the power output end of the motor (7) is connected to a rotating shaft (8). The circumferential surface of the rotating shaft (8) is slidably connected to the inside of the sleeve rod (9) through a cross connecting plate (15). The threaded rod (22) has threads in opposite directions on the circumferential surfaces on both the front and rear sides. The circumferential surfaces at both ends of the threaded rod (22) are threadedly connected to the movable plate (23). The right end of the movable plate (23) at the front end is rotatably mounted with a rotating shaft (18). The right end of the movable plate (23) at the rear end is rotatably mounted with a driven shaft (24). The rotating shaft (18) and the driven shaft (24) are both connected to a hobbing cutter disc (19) through a cross-shaped insert. Through the setting of the spur gear (43) and the toothed plate (44), the movable plate (23) can be driven to move horizontally a certain distance, and the hobbing cutter disc (19) within a certain width can be clamped and fixed. The two movable plates (23) are provided with sliding grooves (27) on both the front and rear sides. The sliding grooves (27) are all slidably installed with sliders (26). The sliders (26) are provided with bellows covers (25) on the outside. The right side wall of the cutter head mounting box (3) is provided with a movable groove (28). The bellows cover (25) is located inside the movable groove (28). The left side of the rear movable plate (23) passes through the movable groove (28) and extends into the interior of the cutter head mounting box (3). The right front end of the movable box (5) is provided with a movable groove (42). The left side of the front movable plate (23) passes through the movable groove (28) and the movable groove (42) and extends into the interior of the movable box (5). The front movable plate (23) is slidably installed on the circumferential surface of the rotating shaft (14). A threaded rod (29) is rotatably mounted in the middle of the right end of the cutter head mounting box (3). The upper end of the threaded rod (29) passes through the cutter head mounting box (3) and is fixedly connected to a knob. A lifting plate (30) is threadedly connected to the circumferential surface of the lower end of the threaded rod (29). A U-shaped mounting plate (31) is provided on the right side of the lifting plate (30). A motor (32) is provided at the left rear end of the U-shaped mounting plate (31). A cleaning brush (33) is connected to the power output end of the motor (32) through a synchronous belt drive. The cleaning brush (33) is rotatably mounted inside the right side of the U-shaped mounting plate (31). The cleaning brush (33) is located directly below the hobbing cutter head (19).

2. The cutter head rotation structure of a CNC gear hobbing machine according to claim 1, characterized in that, The circumferential surface of the second rotating shaft (14) is slidably connected to the first sprocket (16) via the cross connecting plate (15). The first sprocket (16) is connected to the second sprocket (17) via the toothed chain drive. The second sprocket (17) is disposed on the circumferential surface of the third rotating shaft (18).

3. The cutter head rotation structure of a CNC gear hobbing machine according to claim 1, characterized in that, The bottom of the movable box (5) is provided with a through groove (39), the upper end of the toothed plate (44) is located inside the through groove (39), the upper end of the movable box (5) is provided with a movable groove one (40), the lower end of the movable plate one (10) is located inside the movable groove one (40), the right side wall of the movable box (5) is provided with a movable groove two (41), and the left side of the spur gear three (21) is located inside the movable groove two (41).

4. The cutter head rotation structure of a CNC gear hobbing machine according to claim 1, characterized in that, The lower end of the threaded rod (29) is threaded with a lifting plate (34), and the lifting plate (34) is located above the lifting plate (30). A sealing plate (35) is provided on the right side of the lifting plate (34). A lifting groove (36) is provided at the lower right side of the cutter head mounting box (3). The upper end of the sealing plate (35) is located inside the lifting groove (36).

5. The cutter head rotation structure of a CNC gear hobbing machine according to claim 4, characterized in that, A positioning rod (37) is provided inside the right side of the cutter head mounting box (3). The lower end of the positioning rod (37) passes through the second lifting plate (34) and the first lifting plate (30) and extends to the bottom of the first lifting plate (30). A stop block (38) is provided at the lower end of the threaded rod (29), and the stop block (38) is located below the first lifting plate (30).

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