Cutter head rotation structure of numerical control gear hobbing machine

Abstract

The invention provides a cutterhead rotation structure of a numerical control gear hobbing machine, and belongs to the technical field of numerical control gear hobbing machines, the cutterhead rotation structure comprises a base, a gear blank clamping structure is arranged on the upper surface of the right side of the base, and a cutterhead installation box is movably installed on the upper surface of the left side of the base through a driving device and a rail; limiting supporting plates are arranged on the front side and the rear side of the inner bottom of the cutterhead mounting box correspondingly, the upper ends of the limiting supporting plates are movably connected with a movable box through balls, and a telescopic air cylinder is arranged at the rear end of the upper surface of the movable box. Two second moving plates are arranged on a first threaded rod, the distance between the two second moving plates can be adjusted, then more hobbing cutter heads with different lengths can be clamped and fixed, fourth straight gears and toothed plates are arranged, the second moving plates can be driven to move in the horizontal direction, and therefore the hobbing cutter heads with different lengths can be clamped and fixed. And then the distance between the hobbing cutter head and the outer wall of the right side of the cutter head mounting box is changed, hobbing cutter heads with different widths can be replaced, the application range of the device is widened, the practicability is higher, and use is more flexible.

Description

Technical Field

[0001] The present invention belongs to the technical field of numerically controlled hobbing machines, and specifically relates to a cutter head rotary structure of a numerically controlled hobbing machine. Background Art

[0002] The numerically controlled hobbing machine is one of the most widely used machine tools in gear processing machine tools. It mainly uses a hob to process and cut spur and helical cylindrical gears by the generating method, and can also process worm wheels, sprocket wheels, etc.

[0003] However, the cutter head rotary mechanism of the existing numerically controlled hobbing machine is not easy to replace, and it is impossible to process gear teeth with different depths and gears of different sizes. Because the distance between the existing hob cutter head and the outer wall of the cutter head mounting box is fixed, even if the hob cutter head can be replaced, only a hob cutter head with a smaller width can be replaced, and the applicable range is small. Moreover, the hob cutter head needs to be disassembled and assembled by additional equipment, which is rather troublesome, inefficient, and thus rather troublesome when subsequent cleaning is required.

[0004] Therefore, we propose a cutter head rotary structure of a numerically controlled hobbing machine to solve the problems encountered above. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems that the cutter head rotary mechanism of the existing numerically controlled hobbing machine is not easy to replace, and it is impossible to process gear teeth with different depths and gears of different sizes. Because the distance between the existing hob cutter head and the outer wall of the cutter head mounting box is fixed, even if the hob cutter head can be replaced, only a hob cutter head with a smaller width can be replaced, and the applicable range is small. Moreover, the hob cutter head needs to be disassembled and assembled by additional equipment, which is rather troublesome, inefficient, and thus rather troublesome when subsequent cleaning is required, and to propose a cutter head rotary structure of a numerically controlled hobbing machine.

[0006] The object of the present invention can be achieved by the following technical solutions: It includes a base, on the upper surface of the right side of the base, there is a blank clamping structure, on the upper surface of the left side of the base, a cutter head mounting box is movably installed through a driving device and a track. On the front and rear sides of the inner bottom of the cutter head mounting box, there are limit support plates. The upper ends of the limit support plates are movably connected with a movable box through balls. At the rear end of the upper surface of the movable box, there is a telescopic cylinder. At the front end of the telescopic cylinder, there is a movable plate one. Inside the lower end of the movable plate one, a sleeve rod is rotatably installed. The front end of the sleeve rod is fixedly connected with a gear ring through an annular block. The front end of the gear ring is clamped with a spur gear one. At the front end of the spur gear one, there is a rotating shaft two, and the front end of the rotating shaft two is rotatably installed inside the movable box. On the circumferential surface of the sleeve rod, there are a spur gear two and a spur gear four in sequence from front to back. Below the rear side of the spur gear four, there is a toothed plate matching the spur gear four, and the toothed plate is fixedly installed inside the movable box. At the rear end of the right side of the spur gear two, there is a spur gear three matching the spur gear two. In the middle of the spur gear three, there is a threaded rod one, and the threaded rod one is rotatably installed on the outer wall of the right side of the movable box.

[0007] As a preferred embodiment of the present invention, inside the rear side of the movable box, there is a motor one. The power output end of the motor one is in transmission connection with a rotating shaft one. On the circumferential surface of the rotating shaft one, it is slidably connected with the inside of the sleeve rod through a cross connecting plate.

[0008] As a preferred embodiment of the present invention, on the circumferential surface of the front and rear sides of the threaded rod one, there are threads in opposite directions. On the circumferential surfaces of the front and rear ends of the threaded rod one, there are two movable plates in threaded connection. Inside the right end of the front movable plate two, a rotating shaft three is rotatably installed. Inside the right end of the rear movable plate two, a driven shaft is rotatably installed. Inside the rotating shaft three and the driven shaft, a hob cutter head is inserted through a cross insert block.

[0009] As a preferred embodiment of the present invention, on the circumferential surface of the rotating shaft two, it is slidably connected with a sprocket one through a cross connecting plate. The sprocket one is in transmission connection with a sprocket two through a toothed chain. The sprocket two is arranged on the circumferential surface of the rotating shaft three.

[0010] As a preferred embodiment of the present invention, on the front and rear sides of the two movable plates two, there are sliding grooves. Inside the four sliding grooves, there are sliders slidably installed. On the outer sides of the sliders, there are bellows covers. On the right side wall of the cutter head mounting box, there is a moving groove one. The bellows cover is arranged inside the moving groove one. The left side of the rear movable plate two penetrates through the moving groove one and extends to the inside of the cutter head mounting box. At the front end of the right side of the movable box, there is a moving groove two. The left side of the front movable plate two penetrates through the moving groove one and the moving groove two and extends to the inside of the movable box, and the front movable plate two is slidably installed on the circumferential surface of the rotating shaft two.

[0011] As a preferred embodiment of the present invention, a through groove is formed at the bottom of the movable box, the upper end of the toothed plate is arranged inside the through groove, a first movable groove is formed at the upper end of the movable box, the lower end of the first movable plate is arranged inside the first movable groove, a second movable groove is formed on the right side wall of the movable box, and the left side of the third spur gear is arranged inside the second movable groove.

[0012] As a preferred embodiment of the present invention, a second threaded rod is rotatably installed in the middle of the right end inside the cutter head mounting box, the upper end of the second threaded rod penetrates through the cutter head mounting box and is fixedly connected with a knob, a first lifting plate is threadedly connected to the circumferential surface of the lower end of the second threaded rod, a U-shaped mounting plate is arranged on the right side of the first lifting plate, a second motor is arranged at the rear end on the left side of the U-shaped mounting plate, the power output end of the second motor is connected with a cleaning brush through a synchronous belt drive, and the cleaning brush is rotatably installed inside the right side of the U-shaped mounting plate, and the cleaning brush is located directly below the hob cutter head.

[0013] As a preferred embodiment of the present invention, a second lifting plate is threadedly connected to the circumferential surface of the lower end of the second threaded rod, and the second lifting plate is located above the first lifting plate. A sealing plate is arranged on the right side of the second lifting plate, and a lifting groove is formed at the lower right end of the cutter head mounting box, and the upper end of the sealing plate is arranged inside the lifting groove.

[0014] As a preferred embodiment of the present invention, a positioning rod is arranged inside the right side of the cutter head mounting box, the lower end of the positioning rod penetrates through the second lifting plate and the first lifting plate and extends below the first lifting plate, and a stop block is arranged at the lower end of the second threaded rod, and the stop block is arranged below the first lifting plate.

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

[0016] (1) By arranging the two second movable plates on the first threaded rod, the distance between the two second movable plates can be adjusted, and then more hob cutter heads with different lengths can be clamped and fixed. By arranging the fourth spur gear and the toothed plate, the second movable plate can be driven to move horizontally, and then the distance between the hob cutter head and the outer wall on the right side of the cutter head mounting box can be changed, and hob cutter heads with different widths can be replaced, improving the application range of this device, with higher practicability and more flexible use;

[0017] (2) By switching the state of the engagement between the toothed ring and the first spur gear and the engagement between the second spur gear and the third spur gear at any time, gear hobbing processing can be carried out or the two second movable plates can be adjusted to move forward and backward to clamp and fix or loosen and replace the cutter head. The operation is simple and fast, without the need to set many driving parts, reducing the occupied space and making the device more lightweight;

[0018] (3) Through the provided cleaning brush, after the cutter head finishes working, by rotating the second threaded rod, the cleaning brush can be driven to move upward until it contacts the bottom of the cutter head. Then, the second motor drives the cleaning brush to rotate to clean the surface of the cutter head, sweeping away the impurities attached to the surface of the cutter head and improving the subsequent hobbing effect. Brief Description of the Drawings

[0019] For the convenience of those skilled in the art to understand, the present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 Schematic three-dimensional structure diagram of the present invention;

[0021] Figure 2 Front sectional three-dimensional view of the present invention;

[0022] Figure 3 Left sectional three-dimensional view of the cutter head mounting box of the present invention;

[0023] Figure 4 Top sectional three-dimensional view of the present invention;

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

[0025] Figure 6 Schematic diagram of the internal structure of the blade mounting box of the present invention;

[0026] Figure 7 Schematic diagram of the internal structure of the movable box of the present invention;

[0027] Figure 8 Partial sectional view at the cleaning brush of the present invention.

[0028] In the figure: 1, base; 2, blank clamping structure; 3, cutter head mounting box; 4, limit support plate; 5, movable box; 6, ball; 7, first motor; 8, first rotating shaft; 9, sleeve rod; 10, first moving plate; 11, telescopic cylinder; 12, tooth ring; 13, first spur gear; 14, second rotating shaft; 15, cross connecting plate; 16, first sprocket; 17, second sprocket; 18, third rotating shaft; 19, hobbing cutter head; 20, second spur gear; 21, third spur gear; 22, first threaded rod; 23, second moving plate; 24, driven shaft; 25, bellows; 26, slider; 27, chute; 28, first moving groove; 29, second threaded rod; 30, first lifting plate; 31, C-shaped mounting plate; 32, second motor; 33, cleaning brush; 34, second lifting plate; 35, sealing plate; 36, lifting groove; 37, positioning rod; 38, stop block; 39, through groove; 40, first movable groove; 41, second movable groove; 42, second moving groove; 43, fourth spur gear; 44, toothed plate. Detailed Embodiment

[0029] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Embodiment 1:

[0031] See also Figure 1 - Figure 8 As shown, a cutter disc rotating structure of a CNC gear hobbing machine comprises a base 1, a gear blank clamping structure 2 is arranged on the right upper surface of the base 1, the gear blank clamping structure 2 is composed of a bottom placement seat and a top clamping seat, which can clamp and fix the gear blank, and the upper end of the top clamping seat is connected to a rotating motor, and a hydraulic lifting cylinder is connected above the rotating motor, which can drive the top clamping seat lifting box to rotate, thereby facilitating the clamping and fixing of the gear blank and the rotating gear hobbing work, and a cutter disc installation box 3 is movably installed on the left upper surface of the base 1 through a driving device and a track, The driving device is a prior art and will not be described in detail. It can push the cutter head installation box 3 to move horizontally left and right. The front and rear sides of the bottom of the cutter head installation box 3 are provided with limit support plates 4. The upper end of the limit support plate 4 is movably connected to the movable box 5 through the ball 6, which improves the stability of the cutter head installation box 3 so that the cutter head installation box 3 can move horizontally left and right stably. A motor 7 is arranged inside the rear side of the movable box 5. The power output end of the motor 7 is connected to the rotating shaft 8 through a coupling transmission. The rear end of the upper surface of the movable box 5 is provided with The telescopic cylinder 11 has a movable plate 10 at the front end thereof, and 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 inner part of the sleeve rod 9 through a cross connecting plate 15. The setting of the cross connecting plate 15 enables the sleeve rod 9 to move horizontally forward and backward on the rotating shaft 8 without affecting the rotation of the sleeve rod 9 when the rotating shaft 8 rotates. The front end of the sleeve rod 9 is fixedly connected to a gear ring 12 through an annular block, and a spur gear 13 is clamped at the front end of the gear ring 12. The setting of the annular block , so 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 clamping space for the gear ring 12, so that the gear ring 12 can smoothly clamp 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 with a sprocket 1 16 through a cross connecting plate 15, the sprocket 1 16 is connected with a sprocket 2 17 through a tooth chain transmission, and the sprocket 2 17 is arranged on the circumferential surface of the rotating shaft 3 18;

[0032] It should be noted that the first sprocket 16, the tooth chain, and the second sprocket 17 are all arranged inside the front moving plate 10. At the same time, the first sprocket 16 is also drivingly connected to the second rotating shaft 14 through the cross connecting plate 15. That is, when the second rotating shaft 14 rotates, it can drive the first sprocket 16 to rotate through the cross connecting plate 15. And when the first threaded rod 22 rotates and drives the moving plate 10 to move horizontally back and forth, the moving plate 10 can synchronously drive the first sprocket 16, the tooth chain, and the second sprocket 17 to move horizontally back and forth, so that the first sprocket 16 can move horizontally back and forth on the cross connecting plate 15, and it will not affect that after the first sprocket 16 stops moving later, when the second rotating shaft 14 rotates, it can still drive the first sprocket 16 to rotate through the cross connecting plate 15.

[0033] On the circumferential surface of the sleeve rod 9, a second spur gear 20 and a fourth spur gear 43 are sequentially arranged from front to back. Below the rear side of the fourth spur gear 43, a toothed plate 44 that matches the fourth spur gear 43 is arranged, and the toothed plate 44 is fixedly installed inside the movable box 5. At the rear right side of the second spur gear 20, a third spur gear 21 that matches the second spur gear 20 is arranged. In the middle of the third spur gear 21, there is a first threaded rod 22, and the first threaded rod 22 is rotatably installed on the right outer wall of the movable box 5. On the circumferential surface of the front and rear sides of the first threaded rod 22, threads in opposite directions are arranged. On the circumferential surface of both ends of the first threaded rod 22, there are two moving plates 23 threadedly connected. Inside the right end of the front moving plate 23, a third rotating shaft 18 is rotatably installed. Inside the right end of the rear moving plate 23, a driven shaft 24 is rotatably installed. Inside both the third rotating shaft 18 and the driven shaft 24, a hob cutter head 19 is inserted through a cross-shaped insert block. Among them, the arrangement of the threads in opposite directions on the front and rear sides of the first threaded rod 22 enables the two moving plates 23 on its surface to approach each other and then clamp and fix the hob cutter head 19 when the first threaded rod 22 rotates, and the two moving plates 23 can also move away from each other, losing the clamping and fixing effect on the hob cutter head 19, which is convenient for the disassembly and replacement work of the hob cutter head 19;

[0034] It should be noted that when the sleeve rod 9 moves horizontally backward so that the second spur gear 20 meshes with the third spur gear 21, the toothed ring 12 will disengage from the first spur gear 13, and at this time, the fourth spur gear 43 also does not mesh with the toothed plate 44. Now, when the first motor 7 drives the sleeve rod 9 to rotate through the first rotating shaft 8 and the cross connecting plate 15, only the second spur gear 20 and the third spur gear 21 will be driven to rotate by the sleeve rod 9, and the first spur gear 13 will not be driven to rotate by the toothed ring 12. Then, when the sleeve rod 9 continues to move backward until the fourth spur gear 43 meshes with the toothed plate 44, the second spur gear 20 will also disengage from the third spur gear 21. At this time, when the sleeve rod 9 rotates, only the fourth spur gear 43 will be driven to rotate, and the third spur gear 21 will not be driven to rotate by the second spur gear 20. Among them, the number of teeth of the second spur gear 20, the toothed ring 12, and the fourth spur gear 43 is the same, so that when the sleeve rod 9 rotates, the second spur gear 20, the toothed ring 12, and the fourth spur gear 43 can be rotated by the same amplitude. Subsequently, no matter how the second spur gear 20, the toothed ring 12, and the fourth spur gear 43 rotate, after the sleeve rod 9 moves horizontally forward and backward, the toothed ring 12 can always be engaged with the first spur gear 13, the second spur gear 20 can always be engaged with the third spur gear 21, and the fourth spur gear 43 can always be engaged with the toothed plate 44.

[0035] Sliding grooves 27 are formed on the front and rear sides of the two second moving plates 23. Sliders 26 are slidably installed inside the four sliding grooves 27. A bellows 25 is arranged on the outer side of the slider 26. A moving groove one 28 is formed on the right side wall of the cutter head mounting box 3. The arrangement of the sliding groove 27 provides a moving space for the slider 26, so that when the second moving plate 23 moves horizontally left and right, it will not carry the bellows 25 to move horizontally left and right. When the bellows 25 is installed on the second moving plate 23, it will not affect the horizontal left and right moving operation of the second moving plate 23. The bellows 25 is arranged inside the moving groove one 28. The left side of the rear second moving plate 23 penetrates through the moving groove one 28 and extends into the cutter head mounting box 3. A moving groove two 42 is formed at the front right end of the movable box 5. The left side of the front second moving plate 23 penetrates through the moving groove one 28 and the moving groove two 42 and extends into the movable box 5. And the front second moving plate 23 is slidably installed on the circumferential surface of the second rotating shaft 14. The arrangement of the moving groove one 28 provides a space for the second moving plate 23 to move horizontally forward and backward, so that when the first threaded rod 22 rotates, the second moving plate 23 can move horizontally forward and backward inside the moving groove one 28;

[0036] It should be noted that the second moving plate 23 can move a certain distance forward and backward inside the moving groove one 28, so as to clamp and fix the hobbing cutter head 19 within a certain length. Also, through the arrangement of the fourth spur gear 43 and the toothed plate 44, the second moving plate 23 can be driven to move a certain distance in the horizontal direction, and the hobbing cutter head 19 within a certain width can be clamped and fixed, increasing the machining of gear teeth with different depths and sizes, and improving the application range of the hobbing cutter head 19.

[0037] A through groove 39 is provided at the bottom of the movable box 5, and the upper end of the toothed plate 44 is arranged inside the through groove 39. The arrangement of the through groove 39 provides a moving space for the toothed plate 44, so that when the movable box 5 moves horizontally left and right, it will not collide with the toothed plate 44. An upper through groove 40 is provided at the upper end of the movable box 5, and the lower end of the first moving plate 10 is arranged inside the through groove 40. The arrangement of the through groove 40 provides a moving space for the first moving plate 10, so that the first moving plate 10 can smoothly move horizontally back and forth inside the movable box 5. A second through groove 41 is provided on the right side wall of the movable box 5, and the left side of the third spur gear 21 is arranged inside the second through groove 41. The arrangement of the second through groove 41 provides a moving space for the third spur gear 21, so that the third spur gear 21 can stably mesh with the second spur gear 20 without affecting the rotation of the third spur gear 21.

[0038] Embodiment 2:

[0039] Please refer to Figure 2 and Figure 8 As shown, a second threaded rod 29 is rotatably installed in the middle of the right end inside the cutter head mounting box 3. The upper end of the second threaded rod 29 penetrates through the cutter head mounting box 3 and is fixedly connected to a knob. The circumferential surface of the lower end of the second threaded rod 29 is threadedly connected to a first lifting plate 30. A C-shaped mounting plate 31 is arranged on the right side of the first lifting plate 30. A second motor 32 is arranged at the rear end on the left side of the C-shaped mounting plate 31. The power output end of the second motor 32 is connected to a cleaning brush 33 through a synchronous belt drive, and the cleaning brush 33 is rotatably installed inside the right side of the C-shaped mounting plate 31. The cleaning brush 33 is located directly below the hobbing cutter head 19. Among them, the cleaning brush 33 is made of a flexible material to avoid damage to the hobbing cutter head 19 during the cleaning process due to too hard material. The circumferential surface of the lower end of the second threaded rod 29 is threadedly connected to a second lifting plate 34, and the second lifting plate 34 is located above the first lifting plate 30. A sealing plate 35 is arranged on the right side of the second lifting plate 34. A lifting groove 36 is provided at the lower right end of the cutter head mounting box 3. The upper end of the sealing plate 35 is arranged inside the lifting groove 36. The arrangement of the lifting groove 36 provides a moving space for the sealing plate 35, so that when the second lifting plate 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 to prevent impurities generated during the working process from entering the inside of the cutter head mounting box 3 through the lifting groove 36;

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

[0041] Inside the right side of the cutter head mounting box 3, a positioning rod 37 is provided. The lower end of the positioning rod 37 penetrates through the second lifting plate 34 and the first lifting plate 30 and extends below the first lifting plate 30. The setting of the positioning rod 37 can limit the first lifting plate 30 and the second lifting plate 34, so that when the second 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 second threaded rod 29, and the stop block 38 is arranged below the first lifting plate 30. The setting of the stop block 38 limits the lower end of the first lifting plate 30 to prevent the first lifting plate 30 from moving downward too much and detaching from the second threaded rod 29, which affects the use of the first lifting plate 30.

[0042] When the present invention is in use, the blank is clamped and fixed by the blank clamping structure 2. Then, the first motor 7 and the blank clamping structure 2 are started. The blank clamping structure 2 will drive the blank to rotate. At the same time, the first motor 7 drives the sleeve rod 9 and the gear ring 12 to rotate through the first rotating shaft 8 and the rear cross connecting plate 15. At this time, the gear ring 12 is engaged with the first spur gear 13, so as to drive the first spur gear 13, the second rotating shaft 14, the front cross connecting plate 15 and the first sprocket 16 to rotate. The rotation of the first sprocket 16 drives the second sprocket 17, the third rotating shaft 18 and the hob cutter head 19 to rotate through the chain, and processes and cuts the blank.

[0043] When it is necessary to process gears with different depths and different sizes, first, according to whether the width of the new hob cutter head 19 will collide with the right side wall of the cutter head mounting box 3. If it will, the telescopic cylinder 11 is started. The telescopic cylinder 11 drives the first moving plate 10 and the sleeve rod 9 to move horizontally backward, so that the fourth spur gear 43 on the sleeve rod 9 is engaged with the toothed plate 44. Then, the first motor 7 rotates. Through the first rotating shaft 8, the rear cross connecting plate 15, the sleeve rod 9 and the fourth spur gear 43 rotate. The rotation of the fourth spur gear 43 engages with the toothed plate 44 to apply a horizontal thrust, and pushes the movable box 5 to the right by a certain distance, so that the new hob cutter head 19 will not collide with the cutter head mounting box 3 after installation. Then, the movement stops. Then, the telescopic cylinder 11 drives the sleeve rod 9 to move horizontally forward again, so that the second spur gear 20 is engaged with the third spur gear 21. At this time, the first motor 7 works again. The sleeve rod 9 will drive the third spur gear 21 and the first threaded rod 22 to rotate through the second spur gear 20, and then drive the two first moving plates 10 to move away from each other, so that the first moving plates 10 lose the clamping and fixing effect on the hob cutter head 19. Take away the old hob cutter head 19, place the new hob cutter head 19 in the middle of the two first moving plates 10. The first motor 7 works in the reverse direction, so that the two first moving plates 10 move closer to each other and clamp and fix the new hob cutter head 19, completing the cutter head replacement work. Then, start the telescopic cylinder 11 again, drive the sleeve rod 9 to continue to move forward, so that the gear ring 12 is engaged with the first spur gear 13. At this time, when the first motor 7 works, it can drive the second rotating shaft 14 to rotate, and then drive the third rotating shaft 18 and the hob cutter head 19 to rotate through the chain drive, and cut the blank.

[0044] After the blank cutting is completed, rotate the second threaded rod 29. The second threaded rod 29 drives the first lifting plate 30, the C-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 hob cutter head 19. Then start the first motor 7 and the second motor 32. The first motor 7 drives the hob cutter head 19 to rotate slowly, and the second motor 32 drives the cleaning brush 33 to rotate rapidly through the synchronous belt, sweeping away the impurities that may adhere to the surface of the hob cutter head 19 and completing the cleaning work.

[0045] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A cutter head rotating structure of a CNC gear hobbing machine, comprising a base (1), a gear blank clamping structure (2) being arranged on the right upper surface of the base (1), and a cutter head mounting box (3) being movably mounted on the left upper surface of the base (1) via a driving device and a track, characterized in that: The front and rear sides of the bottom of the cutter head installation box (3) are both provided with a limit support plate (4); the upper end of the limit support plate (4) is movably connected to the movable box (5) via a ball bearing (6); the rear end of the upper surface of the movable box (5) is provided with a telescopic cylinder (11); the front end of the telescopic cylinder (11) is provided with a movable plate 1 (10); a sleeve rod (9) is rotatably mounted inside the lower end of the movable plate 1 (10); the front end of the sleeve rod (9) is fixedly connected to a gear ring (12) via an annular block; the front end of the gear ring (12) is clamped with a spur gear 1 (13); the front end of the spur gear 1 (13) is provided with a rotating shaft 2 (14); and The front end of the second rotating shaft (14) is rotatably mounted inside the movable box (5); the circumferential surface of the sleeve rod (9) is provided with a second spur gear (20) and a fourth spur gear (43) in sequence from front to back; a tooth plate (44) matching the fourth spur gear (43) is provided at the lower rear side of the fourth spur gear (43), and the tooth plate (44) is fixedly mounted inside the movable box (5); a spur gear (21) matching the second spur gear (20) is provided at the right rear end of the second spur gear (20); a threaded rod (22) is provided in the middle of the third spur gear (21), and the threaded rod (22) is rotatably mounted on the right outer wall of the movable box (5).

2. The cutter head rotating structure of a CNC gear hobbing machine according to claim 1, characterized in that: A motor 1 (7) is arranged inside the rear side of the movable box (5); a power output end of the motor 1 (7) is drivingly connected to a rotating shaft 1 (8); and a circumferential surface of the rotating shaft 1 (8) is slidably connected to the inside of the sleeve rod (9) via a cross connecting plate (15).

3. The cutter head rotating structure of a CNC gear hobbing machine according to claim 2, characterized in that: The circumferential surfaces of the front and rear sides of the threaded rod 1 (22) are provided with threads in opposite directions, and the circumferential surfaces of the front and rear ends of the threaded rod 1 (22) are both threadedly connected to the movable plate 2 (23), and the right end of the movable plate 2 (23) at the front end is internally rotatably mounted with a rotating shaft 3 (18), and the right end of the movable plate 2 (23) at the rear end is internally rotatably mounted with a driven shaft (24), and the interiors of the rotating shaft 3 (18) and the driven shaft (24) are both plugged with a gear hobbing cutter disc (19) via a cross plug block.

4. The cutter head rotating structure of a CNC gear hobbing machine according to claim 3, characterized in that: The circumferential surface of the rotating shaft 2 (14) is slidably connected to the sprocket 1 (16) via a cross connecting plate (15), the sprocket 1 (16) is connected to the sprocket 2 (17) via a toothed chain transmission, and the sprocket 2 (17) is arranged on the circumferential surface of the rotating shaft 3 (18).

5. The cutter head rotating structure of a CNC gear hobbing machine according to claim 3, characterized in that: Chutes (27) are provided on both the front and rear sides of the two moving plates II (23). Sliders (26) are slidably installed inside the four chutes (27). A bellows cover (25) is provided on the outer side of the slider (26). A first moving groove (28) is provided on the right side wall of the cutter head mounting box (3). The bellows cover (25) is arranged inside the first moving groove (28). The left side of the rear moving plate II (23) penetrates through the first moving groove (28) and extends into the cutter head mounting box (3). A second moving groove (42) is provided at the front right end of the movable box (5). The left side of the front moving plate II (23) penetrates through the first moving groove (28) and the second moving groove (42) and extends into the movable box (5). And the front moving plate II (23) is slidably installed on the circumferential surface of the second rotating shaft (14).

6. The cutter head rotating structure of a CNC gear hobbing machine according to claim 1, characterized in that: A through groove (39) is provided at the bottom of the movable box (5). The upper end of the toothed plate (44) is arranged inside the through groove (39). A first movable groove (40) is provided at the upper end of the movable box (5). The lower end of the moving plate I (10) is arranged inside the first movable groove (40). A second movable groove (41) is provided on the right side wall of the movable box (5). The left side of the third spur gear (21) is arranged inside the second movable groove (41).

7. The cutter head rotating structure of a CNC gear hobbing machine according to claim 1, characterized in that: A second threaded rod (29) is rotatably installed in the middle of the right end inside the cutter head mounting box (3). The upper end of the second threaded rod (29) penetrates through the cutter head mounting box (3) and is fixedly connected with a knob. A first lifting plate (30) is threadedly connected to the circumferential surface of the lower end of the second threaded rod (29). A U-shaped mounting plate (31) is provided on the right side of the first lifting plate (30). A second motor (32) is provided at the rear left end of the U-shaped mounting plate (31). The power output end of the second motor (32) is connected to a cleaning brush (33) through a synchronous belt. And the cleaning brush (33) is rotatably installed inside the right side of the U-shaped mounting plate (31). The cleaning brush (33) is located directly below the hob cutter head (19).

8. The cutter head rotating structure of a CNC gear hobbing machine according to claim 7, characterized in that: A second lifting plate (34) is threadedly connected to the circumferential surface of the lower end of the second threaded rod (29). And the second lifting plate (34) is located above the first lifting plate (30). A sealing plate (35) is provided on the right side of the second lifting plate (34). A lifting groove (36) is provided at the lower right end of the cutter head mounting box (3). The upper end of the sealing plate (35) is arranged inside the lifting groove (36).

9. The cutter head rotating structure of a CNC gear hobbing machine according to claim 8, 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) penetrates through the second lifting plate (34) and the first lifting plate (30) and extends below the first lifting plate (30). A stop block (38) is provided at the lower end of the second threaded rod (29). And the stop block (38) is arranged below the first lifting plate (30).

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