Numerical control precision boring equipment for reference inner hole of cylindrical gear

Abstract

The application relates to the gear boring technology field, in particular to a numerical control fine boring equipment for a cylindrical gear reference inner hole. The numerical control fine boring equipment comprises a base, a boring mechanism and a cylindrical gear clamping mechanism are arranged on the base, and an anti-splashing and chip removal auxiliary integrated assembly for covering both sides of the cylindrical gear reference inner hole is further arranged on the base; the anti-splashing and chip removal auxiliary integrated assembly comprises a cover plate and a supporting ring, the boring mechanism is arranged on the cover plate, the supporting ring is fixedly arranged on the base, and the supporting ring and the cover plate are coaxial. The anti-splashing and chip removal auxiliary integrated assembly can effectively constrain and directionally discharge the chippings during the boring process, avoids splashing of the chippings to the gear end face or the gear groove, saves a subsequent secondary cleaning process, improves the machining efficiency and the cleanliness, simultaneously guarantees the machining precision and the surface quality of the gear reference inner hole, and reduces the assembly defects and early wear risks caused by the chippings.

Description

Technical Field

[0001] This application relates to the field of gear boring technology, and in particular to a CNC precision boring machine for a reference inner hole of a cylindrical gear. Background Technology

[0002] Cylindrical gears are an important type of gear in mechanical gears, and also the most common gear style. During the manufacturing process, cylindrical gears are prone to insufficient precision in their reference inner bore due to factors such as casting, forging, or heat treatment deformation. If directly assembled and used in this state, it will lead to gear meshing runout, increased noise, accelerated wear, and even transmission failure. Therefore, it is necessary to bore the reference inner bore of the cylindrical gear to correct the shape and position errors of the bore, ensuring it meets the final technical requirements of coaxiality with the teeth, dimensional accuracy, and a smooth surface.

[0003] In existing technology, when boring the inner hole of a gear reference, the high-speed rotation of the boring bar cutting the hole wall generates debris. To prevent debris from adhering to the hole wall and affecting subsequent assembly, the hole wall is usually flushed with water during boring, allowing the debris to be discharged through the inner hole with the water flow. However, due to the irregular direction of debris splashing, the flushing water flow cannot completely cover it. Some debris avoids the water flow and adheres to the gear end face or tooth groove, making it difficult to be effectively washed away, requiring additional secondary cleaning. This not only prolongs the processing cycle and increases labor and equipment costs, but also, if the secondary cleaning is not thorough, the metal particles remaining in the tooth groove or end face may be pressed into the tooth surface or mating surface during subsequent gear meshing or assembly, causing tooth surface scratches, reduced mating accuracy, or even premature wear or jamming and other quality problems. Summary of the Invention

[0004] Therefore, it is necessary to provide a CNC precision boring machine for the reference inner hole of a cylindrical gear to address the above-mentioned technical problems.

[0005] A CNC precision boring machine for a cylindrical gear reference inner hole includes a base, on which a boring mechanism and a cylindrical gear clamping mechanism are provided. The base is also provided with an integrated anti-splash and chip removal auxiliary component for covering both sides of the cylindrical gear reference inner hole.

[0006] The integrated anti-splash and chip removal auxiliary component includes a cover plate and a support ring. The boring mechanism is located on the cover plate, and the support ring is fixedly located on the base. The support ring and the cover plate are aligned on the same axis. Multiple radial rods are evenly distributed and slidably connected along the circumference of the support ring. A chip collecting plate is fixedly connected to one end of each radial rod near the axis of the support ring. An elastic chip collecting pad is fixedly connected to the side of two adjacent chip collecting plates. The multiple chip collecting plates and chip collecting pads cooperate to form a conical chip removal channel.

[0007] Preferably, the base is provided with a lifting structure for adjusting the height of the cover plate;

[0008] The lifting structure includes a support frame fixedly connected to the base, a lead screw linear module is provided on the support frame, and the cover plate is fixedly provided on the moving end of the lead screw linear module.

[0009] The boring mechanism includes a second upright frame fixedly mounted on the cover plate. A lifting plate is slidably mounted on the second upright frame along the vertical direction. A rotating shaft is rotatably mounted on the lifting plate along the vertical direction. The rotating shaft is slidably mounted in the center of the cover plate. A rotating plate is fixedly connected to the bottom of the rotating shaft. A telescopic plate is slidably inserted into the inner cavity of the rotating plate. A boring tool is fixedly mounted at one end of the telescopic plate.

[0010] Preferably, a cylinder is fixedly mounted on the second support frame, the piston end of the cylinder is fixedly connected to one end of the lifting plate, a motor is fixedly mounted on the lifting plate, the output end of the motor is fixedly connected to one end of the rotating shaft, a threaded rod is threadedly connected to one side of the telescopic plate, one end of the threaded rod is rotatably mounted on the rotating plate, a second motor is fixedly mounted on the rotating plate, and the output end of the second motor is fixedly connected to one end of the threaded rod.

[0011] Preferably, the outer ring of the support ring is rotatably fitted with a sliding groove plate. The sliding groove plate has multiple sliding grooves along its circumference, and a guide post slides through each groove. Each guide post is fixedly connected to a radial rod. A threaded rod II is threadedly connected to one side of the radial rod. One end of the threaded rod II is rotatably mounted on the support ring. A motor III is fixedly mounted on the support ring, and the output end of the motor III is fixedly connected to one end of the threaded rod II.

[0012] Preferably, the cylindrical gear clamping mechanism includes an electric chuck fixed on the base, and the electric chuck is provided with a plurality of positioning blocks that can simultaneously move closer to or further away from its axis.

[0013] Preferably, the base is provided with a water tank, the water tank is provided with a water pump, the water pump inlet is connected to the inner cavity of the water tank, the water pump outlet is connected to a water outlet hose, the bottom of the cover plate is fixedly provided with an annular pipe, the annular pipe is provided with multiple nozzles along the circumference, and the water outlet hose passes through the cover plate and is connected to the annular pipe.

[0014] Preferably, each chip receiving plate is equipped with an inclined falling component;

[0015] The inclined facilitator includes a mating hole on the chip receiving plate, through which a second brush plate slides. A first brush plate slides on both sides of the second brush plate. Both the first and second brush plates have bristles on the side facing the chip receiving plate. A take-up and release wheel is rotatably mounted on one side of the first brush plate. A chip scraping line is wound on the take-up and release wheel. The end of the chip scraping line is fixedly connected to another adjacent first brush plate. Both sides of the chip receiving plate have protrusions that abut against the ends of the first brush plates on both sides.

[0016] Preferably, a sliding post is slidably passed through the brush plate, and a pressure wheel is fixedly connected to one end of the sliding post near the chip collection plate. A second spring is sleeved on the sliding post, with one end of the second spring fixedly connected to the sliding post and the other end fixedly connected to the brush plate. A first spring is provided on one side of the take-up and release wheel, with one end of the first spring fixedly connected to the rotating end of the take-up and release wheel and the other end fixedly connected to the brush plate. The chip removal line is embedded in the groove of the pressure wheel, and the pressure wheel presses the chip removal line tightly onto the surface of the chip collection pad under the action of the sliding post and the second spring.

[0017] Preferably, one end of the brush plate is fixedly connected to a spring, and the other end of the spring is fixedly connected to the brush plate.

[0018] Preferably, a fixing plate is fixedly provided on the chip receiving plate, and a second lead screw linear module is provided on the fixing plate. The bottom of the second brush plate is fixedly provided on the moving end of the second lead screw linear module. The inner sides of the second brush plate are rotatably provided with second take-up and release wheels. A filling cloth is wound on the second take-up and release wheels. The edge of the filling cloth is embedded in the inner wall of the mating hole, and the end of the filling cloth is fixedly connected to the second brush plate. A second spring is provided on the second take-up and release wheels. One end of the second spring is fixedly connected to the rotating end of the second take-up and release wheels, and the other end is fixedly connected to the inner wall of the chip receiving plate.

[0019] The beneficial effects of this invention are as follows:

[0020] 1. The CNC precision boring equipment for the reference inner hole of a cylindrical gear described in this invention utilizes an integrated anti-splash and chip removal auxiliary component, which can effectively constrain and directionally discharge chips during the boring process, preventing chips from splashing onto the gear end face or tooth groove, eliminating the need for subsequent secondary cleaning processes, improving processing efficiency and cleanliness, while also ensuring the processing accuracy and surface quality of the gear reference inner hole, and reducing the risk of assembly defects and premature wear caused by chip residue.

[0021] In addition, since the chip removal channel is a cone shape with adjustable size, it can not only block the inner hole and intercept the debris, but also narrow the water flow discharged from the inner hole to the center, greatly reducing the range of water droplets. Even if the inner hole diameter is large, a smaller container can be used to collect the water at the bottom, which is convenient for collection and recycling, while avoiding water splashing and polluting the working environment.

[0022] Furthermore, compared to the method of covering the bottom of the gear with a cover plate and setting a fixed small-diameter drain port on the cover plate, the size of the chip removal channel in this solution can be adjusted according to the inner hole diameter. While achieving water flow convergence and narrowing, it can still ensure sufficient drainage cross section and smooth discharge capacity, avoiding water flow delay due to the drain port diameter being too small. This prevents water flow from accumulating at the bottom of the inner hole or back-flooding the boring tool, thus affecting the normal operation of the boring work.

[0023] 2. The CNC precision boring equipment for the reference inner hole of a cylindrical gear described in this invention utilizes an inclined facilitator to facilitate the shedding of chips from the chip receiving plate and chip receiving pad. This prevents chips from adhering and accumulating on the surfaces of the chip receiving plate and chip receiving pad, ensuring that the effective flow cross-section of the chip removal channel is always within the design range. This allows the water discharged from the inner hole to flow smoothly through the chip removal channel and be discharged downwards in a concentrated manner, avoiding the situation where water discharge is obstructed due to the reduction of the flow cross-section, thereby maintaining the continuity and stability of the chip removal process.

[0024] Meanwhile, since the surface of the chip-collecting pad can be scraped and cleaned in real time, the debris no longer remains on the surface of its elastomer for a long time, nor is it repeatedly squeezed and rubbed during the radial adjustment of the chip-collecting plate. Therefore, it effectively avoids surface damage and performance degradation caused by debris embedding into the elastomer of the chip-collecting pad, extends the service life of the chip-collecting pad, and ensures that the chip-collecting pad can still maintain good elastic deformation capacity and surface flatness after long-term use. This ensures that the accuracy of chip discharge channel size adjustment and the sealing fit between the chip-collecting pad and the bottom of the gear reference inner hole are not affected. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the complete three-dimensional structure in one embodiment;

[0026] Figure 2 This is a schematic diagram of the three-dimensional structure of the cover plate.

[0027] Figure 3 for Figure 2 Enlarged view of a portion of point A in the middle;

[0028] Figure 4 This is a three-dimensional structural diagram of the electric chuck.

[0029] Figure 5 A schematic diagram of the three-dimensional structure of the chute plate;

[0030] Figure 6 for Figure 5 Enlarged view of a section at point B in the middle;

[0031] Figure 7 This is a schematic diagram of the three-dimensional structure of the chip receiving plate.

[0032] Figure 8 for Figure 7 Enlarged view of a section at point C;

[0033] Figure 9 for Figure 7 Enlarged view of a section at point D;

[0034] Figure 10 This is a schematic diagram of the three-dimensional structure at the fixed plate.

[0035] Figure 11 This is a schematic diagram of the three-dimensional structure of the filling fabric.

[0036] In the diagram: 1. Base; 2. Water tank; 3. Water pump; 4. Stand 1; 5. Cover plate; 6. Water outlet hose; 7. Electric chuck; 8. Slide plate; 9. Lead screw linear module 1; 10. Stand 2; 11. Cylinder 1; 12. Motor 1; 13. Lifting plate; 14. Rotating shaft; 15. Annular pipe; 16. Nozzle; 17. Rotating plate; 18. Telescopic plate; 19. Boring tool; 20. Motor 2; 21. Threaded rod 1; 22. Positioning block; 23. Chip receiving plate; 24. 25. Chip catcher; 26. Support ring; 27. Motor 3; 28. Threaded rod 2; 29. ​​Guide post; 20. Radial rod; 31. Mating hole; 32. Filler cloth; 33. Brush plate 1; 34. Spring 1; 35. Take-up and release wheel 1; 36. Spring spring 1; 37. Sliding column; 38. Spring 2; 39. Pressure roller; 40. Chip scraper line; 41. Fixing plate; 42. Lead screw linear module 2; 43. Spring spring 2; 44. Brush plate 2; 45. Take-up and release wheel 2. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0038] Example 1:

[0039] like Figures 1-3 , Figure 5 As shown, a CNC precision boring machine for a cylindrical gear reference inner hole includes a base 1, on which a boring mechanism and a cylindrical gear clamping mechanism are provided. The base 1 is also provided with an integrated anti-splash and chip removal auxiliary component for covering both sides of the cylindrical gear reference inner hole.

[0040] The integrated splash prevention and chip removal auxiliary component includes a cover plate 5 and a support ring 25. The boring mechanism is located on the cover plate 5, and the support ring 25 is fixedly located on the base 1. The support ring 25 and the cover plate 5 are axially aligned. Multiple radial rods 29 are evenly distributed and slidably connected along the circumference of the support ring 25. Each radial rod 29 is fixedly connected to a chip receiving plate 23 at one end near the axis of the support ring 25. Adjacent chip receiving plates 23 are fixedly connected to the sides of two adjacent chip receiving plates 23. Multiple chip receiving plates 23 and chip receiving pads 24 cooperate with each other to form a conical chip removal channel.

[0041] like Figure 2 and Figure 3 As shown, the base 1 is equipped with a lifting structure for adjusting the height of the cover plate 5;

[0042] The lifting structure includes a stand 4 fixedly connected to the base 1, a lead screw linear module 9 is provided on the stand 4, and a cover plate 5 is fixedly provided on the moving end of the lead screw linear module 9.

[0043] The boring mechanism includes a second frame 10 fixedly mounted on the cover plate 5. A lifting plate 13 is slidably mounted on the second frame 10 along the vertical direction. A rotating shaft 14 is rotatably mounted on the lifting plate 13 along the vertical direction. The rotating shaft 14 is slidably mounted in the center of the cover plate 5. A rotating plate 17 is fixedly connected to the bottom of the rotating shaft 14. A telescopic plate 18 is slidably inserted into the inner cavity of the rotating plate 17. A boring tool 19 is fixedly mounted at one end of the telescopic plate 18.

[0044] like Figure 2 and Figure 3 As shown, a cylinder 11 is fixedly mounted on the second upright 10. The piston end of the cylinder 11 is fixedly connected to one end of the lifting plate 13. A motor 12 is fixedly mounted on the lifting plate 13. The output end of the motor 12 is fixedly connected to one end of the rotating shaft 14. A threaded rod 21 is threadedly connected to one side of the telescopic plate 18. One end of the threaded rod 21 is rotatably mounted on the rotating plate 17. A motor 20 is fixedly mounted on the rotating plate 17. The output end of the motor 20 is fixedly connected to one end of the threaded rod 21.

[0045] like Figure 5 and Figure 6 As shown, a sliding groove plate 8 is rotatably sleeved on the outer ring of the support ring 25. Multiple sliding grooves are opened along the circumference of the sliding groove plate 8, and a guide post 28 is slidably inserted in each sliding groove. Each guide post 28 is fixedly connected to a radial rod 29. A threaded rod 27 is threadedly connected to one side of the radial rod 29. One end of the threaded rod 27 is rotatably mounted on the support ring 25. A motor 26 is fixedly mounted on the support ring 25. The output end of the motor 26 is fixedly connected to one end of the threaded rod 27.

[0046] like Figure 4 As shown, the cylindrical gear clamping mechanism includes an electric chuck 7 fixed on the base 1, and the electric chuck 7 is provided with a plurality of positioning blocks 22 that can simultaneously approach or move away from its axis.

[0047] like Figure 1 and Figure 3 As shown, a water tank 2 is provided on the base 1, and a water pump 3 is provided on the water tank 2. The water inlet of the water pump 3 is connected to the inner cavity of the water tank 2, and the water outlet of the water pump 3 is connected to a water outlet hose 6. An annular pipe 15 is fixedly provided at the bottom of the cover plate 5. Multiple nozzles 16 are provided along the circumference of the annular pipe 15. The water outlet hose 6 passes through the cover plate 5 and is connected to the annular pipe 15.

[0048] Specifically, first, the gear to be bored is placed between multiple positioning blocks 22 on the electric chuck 7. Then, the multiple positioning blocks 22 are driven to approach the gear simultaneously by the drive structure inside the electric chuck 7 until the outer edge of the gear is placed on the multiple positioning blocks 22, and the positioning blocks 22 clamp and fix the gear. The electric chuck 7 is existing technology and will not be described in detail here.

[0049] Subsequently, the lead screw linear module 9 drives the cover plate 5 to descend, causing the cover plate 5 to fit against the upper surface of the gear. This first covers the top of the gear reference inner hole, and the rotating shaft 14, boring tool 19, and other structures extend into the inner hole. Furthermore, since the upper surface of the positioning block 22 is flush with the upper edges of the chip receiving plate 23 and the chip receiving pad 24, when the gear is placed on the positioning block 22, the chip receiving plate 23 and the chip receiving pad 24 also fit against the lower surface of the gear. At this time, the bottom of the gear reference inner hole is covered by the conical chip removal channel formed by multiple chip receiving plates 23 and chip receiving pads 24. Next, based on the inner hole diameter, the motor 26 drives the threaded rod 27 to rotate, causing one radial rod 29 to slide on the support ring 25. The guide post 28 on the radial rod 29 will slide in the corresponding groove of the sliding plate 8, thereby rotating the sliding plate 8. The remaining radial rods 29 will also slide under the cooperation of the guide post 28 and the groove, so that multiple chip receiving plates 23 can simultaneously move closer to or further away from the inner hole axis. Furthermore, when the chip receiving plate 23 moves, the chip receiving pad 24 will also deform due to elasticity, thereby proportionally reducing or expanding the size of the chip discharge channel until the upper edge of the chip receiving plate 23 is aligned with the edge of the inner hole.

[0050] After completing the above adjustments, boring of the gear reference inner hole can begin. Based on the inner hole diameter, motor 20 drives threaded rod 21 to rotate, causing telescopic plate 18 to extend from the inside of rotating plate 17, bringing boring tool 19 into contact with the hole wall. Then, motor 12 drives rotating shaft 14 to rotate, allowing boring tool 19 to cut the hole wall. Simultaneously, cylinder 11 can raise and lower lifting plate 13 to adjust the height of boring tool 19, thus achieving comprehensive cutting of the inner hole.

[0051] During the boring process, since the annular tube 15 is also inside the inner hole, water can be pumped out of the water tank 2 by the water pump 3, and sprayed onto the hole wall through the water outlet hose 6 and the annular tube 15 from multiple nozzles 16. This causes the debris adhering to the inner hole wall to flow out with the water, thus not only cleaning the debris from the hole wall but also cooling the boring tool 19. Furthermore, since the top of the inner hole is covered by the cover plate 5, and the bottom edge of the inner hole is in contact with the chip receiving plate 23 and surrounded by the chip removal channel, the debris will not splash onto the gear end face or tooth groove. Instead, it can only be discharged along the chip removal channel, thus achieving effective constraint and directional discharge of the debris. This avoids debris splashing onto the gear end face or tooth groove, eliminating the need for subsequent secondary cleaning processes, improving processing efficiency and cleanliness, and also ensuring the machining accuracy and surface quality of the gear reference inner hole, reducing the risk of assembly defects and premature wear caused by debris residue. Furthermore, because the chip removal channel is an adjustable cone shape, it not only surrounds the inner hole to intercept debris, but also converges and narrows the water flow discharged from the inner hole towards the center, significantly reducing the water droplet area. Even if the inner hole diameter is large, a smaller container can be used to collect the water at the bottom, facilitating collection and recycling, while preventing water splashing and contaminating the working environment. Moreover, compared to methods that also use a cover plate 5 to cover the bottom of the gear and have a fixed small-diameter drain outlet on the cover plate 5, the size of the chip removal channel in this design can be adjusted according to the inner hole diameter. While achieving water convergence and narrowing, it still ensures sufficient drainage cross-section and smooth discharge capacity, preventing water from being delayed due to an excessively small drain outlet diameter. This avoids water accumulation at the bottom of the inner hole or backflow of the boring tool 19, which could affect the normal boring operation.

[0052] In addition, in this solution, all electric mechanisms are uniformly coordinated and controlled by the CNC system, enabling CNC collaborative operation of boring and chip removal processes.

[0053] Example 2:

[0054] like Figure 7 , Figure 8 As shown, each chip receiving plate 23 is equipped with an inclined falling component;

[0055] The oblique falling component includes a mating hole 30 on the chip receiving plate 23, a second brush plate 43 slidably passing through the mating hole 30, a first brush plate 32 slidably provided on both sides of the second brush plate 43, and brush bristles on the side of the first brush plate 32 and the second brush plate 43 facing the chip receiving plate 23. A take-up and release wheel 34 is rotatably provided on one side of the first brush plate 32, and a chip scraping line 39 is wound on the take-up and release wheel 34. The end of the chip scraping line 39 is fixedly connected to the adjacent second brush plate 32. Both sides of the chip receiving plate 23 are provided with protrusions that abut against the ends of the first brush plates 32 on both sides.

[0056] like Figure 9As shown, a sliding post 36 is slidably passed through the brush plate 32. A pressure wheel 38 is fixedly connected to one end of the sliding post 36 near the chip collection plate 23. A spring 37 is sleeved on the sliding post 36. One end of the spring 37 is fixedly connected to the sliding post 36, and the other end is fixedly connected to the brush plate 32. A spring-loaded spring 35 is provided on one side of the take-up and release wheel 34. One end of the spring-loaded spring 35 is fixedly connected to the rotating end of the take-up and release wheel 34, and the other end is fixedly connected to the brush plate 32. The chip removal line 39 is embedded in the groove of the pressure wheel 38, and the pressure wheel 38 presses the chip removal line 39 tightly onto the surface of the chip collection pad 24 under the action of the sliding post 36 and the spring 37.

[0057] like Figure 8 As shown, one end of the brush plate 32 is fixedly connected to a spring 33, and the other end of the spring 33 is fixedly connected to the brush plate 43.

[0058] like Figure 10 and Figure 11 As shown, a fixing plate 40 is fixedly mounted on the chip receiving plate 23, and a lead screw linear module 41 is mounted on the fixing plate 40. The bottom of the brush plate 43 is fixedly mounted on the moving end of the lead screw linear module 41. Both sides of the inner side of the brush plate 43 are rotatably equipped with take-up and release wheels 44. A filling cloth 31 is wound on the take-up and release wheels 44. The edge of the filling cloth 31 is embedded in the inner wall of the mating hole 30, and the end of the filling cloth 31 is fixedly connected to the brush plate 43. A spring spring 42 is mounted on the take-up and release wheels 44. One end of the spring spring 42 is fixedly connected to the rotating end of the take-up and release wheels 44, and the other end is fixedly connected to the inner wall of the chip receiving plate 23.

[0059] Specifically, in the above embodiments, although the water flow discharged from the inner hole can be narrowed and converged towards the center through the chip removal channel to reduce the water flow landing area and facilitate collection and recycling, when debris converges along the chip receiving plate 23 and chip receiving pad 24 with the water flow, because its movement path is not vertical, the debris is more likely to adhere to the non-vertical surfaces of the chip receiving plate 23 and chip receiving pad 24. In particular, the chip receiving pad 24 is made of elastic material, with a high surface friction coefficient and is prone to electrostatic adsorption, making it easier for fine debris to remain on its surface and not easily washed off by the water flow. As the boring operation continues, the debris adhering to the chip receiving plate 23 and chip receiving pad 24 will gradually accumulate and thicken, thereby reducing the effective flow cross-section of the chip removal channel and causing poor water flow. Furthermore, if the debris adhering to the surface of the chip collection pad 24 is not cleaned in time, it may be repeatedly squeezed and rubbed during the radial adjustment of the chip collection plate 23, further embedding into the elastomer of the chip collection pad 24, causing damage to the surface of the chip collection pad 24 and deterioration of its performance, shortening its service life, and affecting the accuracy of chip discharge channel size adjustment and sealing effect.

[0060] Therefore, the following technical solution is adopted in this embodiment:

[0061] The bristles of brush plate 32 and brush plate 43 are in close contact with the surface of chip collecting plate 23, and the chip scraping line 39 is in close contact with the surface of chip collecting pad 24. When the spacing between adjacent chip collecting plates 23 changes, the take-up and unwinding wheel 34, under the action of spring spring 35, winds up or unwinds the chip scraping line 39, keeping the unwinding part of the chip scraping line 39 taut, and the two ends of this part are pressed against the surface of chip collecting pad 24 by the pressure rollers 38 on both sides.

[0062] While the water flow discharged from the inner hole is converged and narrowed towards the center by utilizing the chip removal channel, multiple sets of linear screw modules 41 work synchronously to drive the brush plate 43 to move back and forth along the length of the mating hole 30, and clean the surface of the chip receiving plate 23 by the bristles on the brush plate 32 and the brush plate 43. During movement, the end of the first brush plate 32 is always abutted against the protrusion on the chip receiving plate 23 under the action of the first spring 33. The first brush plate 32 and the second brush plate 43 slide relative to each other, thereby adapting to the shape changes of the chip receiving plate 23 and achieving comprehensive cleaning of the surface of the chip receiving plate 23. This promotes the separation of debris from the surface of the chip receiving plate 23, making it easier to be washed away by water. Similarly, the scraping line 39 adapts to the shape changes of the chip receiving pad 24 by the extension and retraction of the first retraction wheel 34, achieving uniform scraping of the surface of the chip receiving pad 24 and causing debris to fall off the surface of the chip receiving pad 24. Compared with the method of cleaning the chip receiving pad 24 with the same brush bristles, the retractable scraping line 39 is more adaptable because the size of the chip receiving pad 24 is different in different usage scenarios. It not only ensures comprehensive scraping of chip receiving pads 24 of different sizes, but also avoids interference or conflict between structures.

[0063] Thus, the above structure effectively solves the problem of debris adhering and accumulating on the surfaces of the chip receiving plate 23 and the chip receiving pad 24, ensuring that the effective flow cross-section of the chip removal channel is always within the design range, so that the water discharged from the inner hole can smoothly pass through the chip removal channel and be discharged downwards in a concentrated manner, avoiding the situation of poor water discharge due to the reduction of the flow cross-section, thereby maintaining the continuity and stability of the chip removal process.

[0064] Meanwhile, since the surface of the chip receiving pad 24 can be scraped and cleaned in real time, the debris will no longer remain on its elastomer surface for a long time, nor will it be repeatedly squeezed and rubbed during the radial adjustment of the chip receiving plate 23. Therefore, it effectively avoids surface damage and performance degradation caused by debris embedding into the elastomer of the chip receiving pad 24, extends the service life of the chip receiving pad 24, and ensures that the chip receiving pad 24 can maintain good elastic deformation capacity and surface flatness after long-term use. This ensures that the accuracy of the chip discharge channel size adjustment and the sealing fit between the chip receiving pad 24 and the bottom of the gear reference inner hole are not affected.

[0065] In addition, when the brush plate 2 43 moves in the mating hole 30, it will have a pulling effect on the ends of the filling cloth 31 on both sides. The filling cloth 31 is also wound up and unwound under the action of the spring 2 42 and the take-up and release wheel 2 44. The filling cloth 31 has a filling effect on the mating hole 30, which not only ensures the smooth movement of the brush plate 2 43, but also prevents water from flowing out through the mating hole 30.

Claims

1. A CNC precision boring machine for a cylindrical gear reference inner hole, comprising a base (1), wherein a boring mechanism and a cylindrical gear clamping mechanism are provided on the base (1), characterized in that: The base (1) is also provided with an integrated anti-splash and chip removal auxiliary component for covering both sides of the inner hole of the cylindrical gear reference; The integrated anti-splash and chip removal auxiliary component includes a cover plate (5) and a support ring (25). The boring mechanism is located on the cover plate (5). The support ring (25) is fixedly located on the base (1). The support ring (25) coincides with the axis of the cover plate (5). Multiple radial rods (29) are evenly distributed and slidably connected along the circumference of the support ring (25). Each radial rod (29) is fixedly connected to a chip receiving plate (23) at one end near the axis of the support ring (25). Two adjacent chip receiving plates (23) are fixedly connected to a chip receiving pad (24) of elastic material on their sides. Multiple chip receiving plates (23) and chip receiving pads (24) cooperate with each other to form a conical chip removal channel.

2. The CNC precision boring equipment for the reference inner hole of a cylindrical gear according to claim 1, characterized in that: The base (1) is provided with a lifting structure for adjusting the height of the cover plate (5); The lifting structure includes a support frame (4) fixedly connected to the base (1), a screw linear module (9) is provided on the support frame (4), and the cover plate (5) is fixedly provided on the moving end of the screw linear module (9). The boring mechanism includes a second stand (10) fixedly mounted on the cover plate (5). A lifting plate (13) is slidably mounted on the second stand (10) along the vertical direction. A rotating shaft (14) is rotatably mounted on the lifting plate (13) along the vertical direction. The rotating shaft (14) is slidably mounted in the center of the cover plate (5). A rotating plate (17) is fixedly connected to the bottom of the rotating shaft (14). A telescopic plate (18) is slidably inserted into the inner cavity of the rotating plate (17). A boring tool (19) is fixedly mounted at one end of the telescopic plate (18).

3. The CNC precision boring equipment for the reference inner hole of a cylindrical gear according to claim 2, characterized in that: A cylinder (11) is fixedly mounted on the second upright frame (10). The piston end of the cylinder (11) is fixedly connected to one end of the lifting plate (13). A motor (12) is fixedly mounted on the lifting plate (13). The output end of the motor (12) is fixedly connected to one end of the rotating shaft (14). A threaded rod (21) is threadedly connected to one side of the telescopic plate (18). One end of the threaded rod (21) is rotatably mounted on the rotating plate (17). A motor (20) is fixedly mounted on the rotating plate (17). The output end of the motor (20) is fixedly connected to one end of the threaded rod (21).

4. The CNC precision boring equipment for the reference inner hole of a cylindrical gear according to claim 1, characterized in that: The outer ring of the support ring (25) is rotatably fitted with a sliding groove plate (8). Multiple sliding grooves are opened along the circumference of the sliding groove plate (8), and a guide post (28) is slidably passed through each sliding groove. Each guide post (28) is fixedly connected to a radial rod (29). A threaded rod (27) is threadedly connected to one side of the radial rod (29). One end of the threaded rod (27) is rotatably mounted on the support ring (25). A motor (26) is fixedly mounted on the support ring (25). The output end of the motor (26) is fixedly connected to one end of the threaded rod (27).

5. The CNC precision boring equipment for the reference inner hole of a cylindrical gear according to claim 1, characterized in that: The cylindrical gear clamping mechanism includes an electric chuck (7) fixed on the base (1), and the electric chuck (7) is provided with a plurality of positioning blocks (22) that can simultaneously approach or move away from its axis.

6. The CNC precision boring equipment for the reference inner hole of a cylindrical gear according to claim 1, characterized in that: The base (1) is provided with a water tank (2), the water tank (2) is provided with a water pump (3), the water inlet of the water pump (3) is connected to the inner cavity of the water tank (2), the water outlet of the water pump (3) is connected to a water outlet hose (6), the bottom of the cover plate (5) is fixedly provided with an annular pipe (15), the annular pipe (15) is provided with multiple nozzles (16) along the circumference, and the water outlet hose (6) passes through the cover plate (5) and is connected to the annular pipe (15).

7. The CNC precision boring equipment for the reference inner hole of a cylindrical gear according to claim 1, characterized in that: Each chip collection plate (23) is equipped with an inclined chip removal component; The oblique falling component includes a mating hole (30) on the chip receiving plate (23), a second brush plate (43) is slidably inserted in the mating hole (30), a first brush plate (32) is slidably provided on both sides of the second brush plate (43), the first brush plate (32) and the second brush plate (43) are provided with bristles on the side facing the chip receiving plate (23), a take-up and release wheel (34) is rotatably provided on one side of the first brush plate (32), a scraping line (39) is wound on the take-up and release wheel (34), the end of the scraping line (39) is fixedly connected to the adjacent second brush plate (32), and both sides of the chip receiving plate (23) are provided with protrusions that abut against the ends of the first brush plates (32) on both sides.

8. The CNC precision boring equipment for the reference inner hole of a cylindrical gear according to claim 7, characterized in that: A sliding post (36) is slidably passed through the brush plate (32). A pressure wheel (38) is fixedly connected to one end of the sliding post (36) near the chip receiving plate (23). A spring (37) is sleeved on the sliding post (36). One end of the spring (37) is fixedly connected to the sliding post (36), and the other end is fixedly connected to the brush plate (32). A spring spring (35) is provided on one side of the take-up and release wheel (34). One end of the spring spring (35) is fixedly connected to the rotating end of the take-up and release wheel (34), and the other end is fixedly connected to the brush plate (32). The chip removal line (39) is embedded in the groove of the pressure wheel (38), and the pressure wheel (38) presses the chip removal line (39) onto the surface of the chip receiving pad (24) under the action of the sliding post (36) and the spring (37).

9. A CNC precision boring machine for a cylindrical gear reference inner hole according to claim 7, characterized in that: One end of the brush plate (32) is fixedly connected to a spring (33), and the other end of the spring (33) is fixedly connected to the brush plate (43).

10. A CNC precision boring machine for a cylindrical gear reference inner hole according to claim 7, characterized in that: A fixing plate (40) is fixedly provided on the chip receiving plate (23). A screw linear module two (41) is provided on the fixing plate (40). The bottom of the brush plate two (43) is fixedly provided on the moving end of the screw linear module two (41). Both sides of the inner side of the brush plate two (43) are provided with take-up and release wheels two (44). A filling cloth (31) is wound on the take-up and release wheels two (44). The edge of the filling cloth (31) is embedded in the inner wall of the mating hole (30), and the end of the filling cloth (31) is fixedly connected to the brush plate two (43). A spring spring two (42) is provided on the take-up and release wheels two (44). One end of the spring spring two (42) is fixedly connected to the rotating end of the take-up and release wheels two (44), and the other end is fixedly connected to the inner wall of the chip receiving plate (23).

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