Drilling device for belt pulley

Abstract

The invention belongs to the technical field of belt pulley machining, and particularly relates to a belt pulley drilling device which comprises a machining table and a three-jaw chuck, the three-jaw chuck is rotationally arranged on the end face of the machining table, a supporting disc is connected to the end face of the three-jaw chuck, and a plurality of connecting belts are connected to the outer circle face of the supporting disc. A supporting ring is connected to the outer end face of each connecting belt, a plurality of clamping assemblies are arranged on the portion, outside each supporting ring, of the end face of the machining table, a first base plate is arranged on the portion, on one side of each supporting ring, of the end face of the machining table, a second base plate is arranged on the portion, close to the end face of each supporting ring, of the first base plate, and drilling assemblies are arranged on the end face of the first base plate and the end face of the second base plate. According to the device, the rotatable three-jaw chuck is matched with the multiple clamping assemblies and the multiple drilling assemblies, so that the device can stably clamp various belt wheels, drilling treatment can be conducted on belt grooves in the end faces and the outer circle faces of the belt wheels under the condition that tool interference is avoided, and the machining efficiency is effectively improved.

Description

Technical Field

[0001] This invention belongs to the field of belt pulley processing technology, and particularly relates to a drilling device for belt pulleys. Background Technology

[0002] Belt pulleys, belonging to the category of disc-shaped parts, are generally relatively large in size. Their manufacturing processes primarily involve casting and forging. Larger pulleys are typically designed using casting methods, with cast iron as the material. Smaller pulleys can be designed using forging, with steel as the material. Belt pulleys are mainly used for long-distance power transmission. During the production process, pulleys need to be drilled. Existing drilling equipment for pulley production does not provide good fixation during drilling, hindering processing efficiency. Therefore, some pulley drilling devices that can improve the fixation effect have gradually emerged.

[0003] Patent application CN202220651751.X discloses a drilling device for producing pulleys, comprising a base and a housing. The housing is vertically fixed to one end of the top of the base, and two clamping plates slide on both ends of one side of the housing. The two clamping plates are symmetrically arranged, and a synchronous moving mechanism for synchronously moving the two clamping plates is provided inside the housing. A side plate slides on the top of the base away from the housing and is vertically arranged, and a first moving mechanism for moving the side plate is provided inside the base. Spring rods are horizontally fixed at both ends of the side plate near the housing, and pressure plates are fixed at the top of the telescopic ends of the two spring rods. A pulley drilling mechanism is provided on the side plate near the housing. This invention improves the effect of fixing the pulley, avoids pulley wobbling during drilling, and thus improves the drilling quality of the device.

[0004] In existing technologies, the pulley is stably clamped by two movable clamping plates and a pressure plate abutting the end face, allowing multiple holes on the pulley end face to be machined simultaneously. While this improves processing efficiency to some extent, it still has certain drawbacks: First, most existing pulley drilling devices are only suitable for drilling the pulley end face. However, during pulley processing, the grooved areas on the outer circumference also need to be drilled. Existing technologies cannot complete the drilling of both the end face and the outer circumference without tool interference, resulting in the need for multiple disassembly and assembly during drilling, which compromises drilling accuracy. Second, the diameter of the grooves on some pulley surfaces gradually decreases. Most existing devices can only clamp pulleys with the same groove diameter to complete partial drilling, and cannot stably clamp pulleys with different groove diameters and complete multi-directional drilling, thus failing to improve processing efficiency. Summary of the Invention

[0005] To overcome the shortcomings of the prior art, this invention provides a drilling device for pulleys. By using a rotatable three-jaw chuck in conjunction with multiple clamping components and multiple drilling components, the device can not only stably clamp pulleys of various diameters, but also absorb the vibration generated during pulley drilling, thereby improving the drilling effect. Furthermore, it can drill grooves on the end face and outer surface of the pulley without tool interference, effectively improving processing efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a drilling device for a pulley, comprising a processing table and a three-jaw chuck. The three-jaw chuck is rotatably mounted on the end face of the processing table. A supporting plate is connected to the end face of the three-jaw chuck. Multiple connecting bands are evenly connected along the circumferential direction on the outer circumferential surface of the supporting plate. A supporting ring is connected to the outer end face of each connecting band. Multiple clamping components are evenly arranged along the circumferential direction on the outer side of the supporting ring on the end face of the processing table. A first base plate is provided on one side of the supporting ring on the end face of the processing table. A second base plate is provided on the end face of the first base plate near the supporting ring. Drilling components are provided on the end faces of both the first and second base plates. The three-jaw chuck is existing technology and can be a hydraulically or pneumatically driven three-jaw chuck, enabling the device to perform internal clamping processing on the pulley shaft hole, allowing the pulley to rotate, thereby enabling rapid adjustment of the hole position.

[0007] The clamping assembly includes a third push cylinder that is uniformly fixed outside the supporting ring along the circumferential direction. Each third push cylinder has a V-shaped mounting bracket connected to its output end. The mounting bracket has clamping plates on both sides of its upper end face. Each clamping plate has multiple rough surface blocks on its end face near the supporting ring. Multiple shock-absorbing strips are uniformly arranged between two clamping plates along a straight line. Each shock-absorbing strip has multiple anti-slip convex surfaces on its end face.

[0008] Multiple clamping components are arranged in a triangular pattern outside the drive ring, enabling triangular clamping of the pulley. This ensures stability of the pulley's outer surface during drilling. The V-shaped mounting bracket allows the two clamping plates and grooved blocks to clamp the pulley's outer surface during clamping. Combined with an elastic shock-absorbing belt, this increases the contact area and absorbs vibrations generated during drilling, ensuring stability during drilling.

[0009] Preferably, the three-jaw chuck has multiple jaws that are evenly slidably arranged along the circumferential direction on its output end. Each jaw has a detachable clamping arc block on its end face, and each clamping arc block has a V-shaped anti-slip groove on its outer arc surface. Multiple mounting holes are provided on the jaw surfaces and clamping arc blocks, allowing for the removal and replacement of clamping arc blocks of different sizes, thereby enabling the clamping of pulley shaft holes with different inner diameters.

[0010] Preferably, the drilling assembly includes a first rectangular opening disposed on the end face of the second substrate. A first slide table is slidably disposed on the first rectangular opening. A first push cylinder is fixedly disposed on the end face of the first slide table. A first drive motor is connected to the output end of the first push cylinder. A first drill bit clamp is connected to the output end of the first drive motor. Slide rails, sliders, and transmission screws are disposed on the outside of the first and second rectangular openings, respectively, on one side of the first and second slide tables, for controlling the forward and backward movement of the first slide table. This configuration is prior art and will not be elaborated upon further herein.

[0011] Preferably, the drilling assembly further includes a second rectangular opening disposed on the end face of the first substrate. A second slide is slidably disposed on the end face of the second rectangular opening, and a second push cylinder is disposed on the end face of the second slide. A second drive motor is connected to the output end of the second push cylinder, and a second drill bit holder is connected to the output end of the second drive motor. The first slide, in conjunction with the first push cylinder, enables the device to drill holes at various points on the end face of the pulley. The second slide, in conjunction with the second push cylinder, facilitates drilling holes at various points on the outer circumference of the pulley. In this relationship, the second slide is positioned at the middle of the first substrate, between the two clamping assemblies, and its protruding cutting tool can avoid interference.

[0012] Preferably, a first locator is provided on the bottom end face of the connecting strip, and a second locator is provided on the outer side of both the first and second slide ends. The arrangement of the first and second locators allows the hole position to be quickly determined and drives the tool to move to the appropriate position, effectively improving the drilling accuracy.

[0013] Preferably, the clamping assembly further includes a fixing groove disposed on the end face of each clamping plate. Multiple connecting blocks are slidably disposed within the fixing groove. Multiple telescopic tubes are disposed on the outer end face of each connecting block. A telescopic rod is slidably disposed within each telescopic tube. One end of the telescopic rod extends out of the end face of the telescopic tube and is connected to a pressure block. A spring is connected to the other end of the telescopic rod inside the telescopic tube. The fixing groove and connecting blocks allow the clamping assembly to select telescopic tubes and telescopic rods with different strokes according to the diameter of each groove on the pulley surface, enabling the clamping assembly to clamp pulleys of different diameters.

[0014] Preferably, multiple anti-slip particles are provided on the end faces of the supporting ring and the supporting disc, and a steel wire is provided in each connecting band between the supporting ring and the supporting disc. The steel wire provides the connecting band with a certain degree of rigidity and elastic vibration absorption capacity, ensuring the stable placement of the pulley while also absorbing the vibration generated during drilling.

[0015] Preferably, a ring rail is provided below the supporting ring on the end face of the processing table, and the supporting ring slides within the ring rail via an annular slider. The arrangement of the rail and the annular slider allows the supporting ring to stably support the pulley while also facilitating its rotation.

[0016] Preferably, the outer surface of the connecting strip is trapezoidal, and multiple guide grooves are provided on the end face of the connecting strip. The trapezoidal shape of the connecting strip and the multiple guide grooves facilitate the removal of waste and also improve the surface friction of the connecting strip.

[0017] Preferably, the three-jaw chuck has a fixed base at the bottom of the machining table. Multiple annular openings are evenly distributed along the circumferential direction on the end face of the machining table between the fixed base and the ring rail. A conical slope is provided on the end face of the machining table outside each annular opening. Below each annular opening, a guide slope inclined to one side is provided inside the machining table. One end of the guide slope has a chip removal opening on the side wall of the machining table. The conical slope guides the waste chips to the multiple annular openings, allowing the waste chips to be smoothly discharged outwards.

[0018] Preferably, a toothed ring is provided on the outer circular surface of the bottom of the three-jaw chuck, and a gear is rotatably provided on one side of the toothed ring within the fixed seat. The gear meshes with the toothed ring. A third drive motor is provided below the gear at the bottom of the fixed seat, and the output end of the third drive motor is connected to the bottom end face of the gear.

[0019] Preferably, an operation screen is provided on the end face of the processing table, and a pump is provided below the operation screen inside the processing table.

[0020] In summary, compared with existing technologies, the beneficial effects of this solution are as follows: This invention, through the triangularly distributed clamping components combined with a rotating three-jaw chuck and a support plate, enables the pulley to automatically complete the adjustment of multiple hole positions after placement. While avoiding tool interference, it can form a triangular multi-point clamping treatment on the outside of the pulley. With the anti-vibration band and telescopic tube in the clamping components, it can also stably clamp pulleys with grooves of different diameters and absorb and mitigate the vibration generated during drilling, effectively improving drilling accuracy and processing efficiency. The present invention, through the design of a three-jaw chuck, a supporting ring, a first positioner, and a second positioner, enables the supporting ring and the supporting disc to smoothly drive the pulley to rotate while also detecting and judging the relative distance between them and each tool, so that the hole position can be accurately adjusted. With the help of the movable first slide and the second slide, the possibility of multiple disassembly and assembly is reduced, which can effectively improve the drilling accuracy.

[0021] This invention, through the design of the supporting disc, connecting belt, steel wire, and annular opening, enables the device to not only drive the pulley to rotate stably, but also absorb vibration during drilling while facilitating the rapid discharge of waste chips, effectively reducing workload and improving work efficiency. Attached Figure Description

[0022] Figure 1 This is a perspective view of the present invention; Figure 2 This is a perspective view of the invention from a second viewpoint; Figure 3 This is a top view of the present invention; Figure 4 This is the front view of the present invention; Figure 5 for Figure 3 A three-dimensional sectional view at point AA; Figure 6 for Figure 4 A three-dimensional sectional view at point BB; Figure 7 A 3D view of the clamping components; Figure 8 The main view of the clamping component; Figure 9 for Figure 8 A 3D view at the center CC; Figure 10 This is a side view of the clamping component; Figure 11 for Figure 10 3D view at point DD; Figure 12 A three-dimensional view of the supporting disk components; Figure 13 for Figure 5 A magnified view of a section at point E in the middle; Figure 14 for Figure 6 A magnified view of a section at point F in the middle;

[0023] In the diagram: 10. Processing table; 11. First substrate; 12. Second substrate; 13. First rectangular opening; 14. Second rectangular opening; 15. First push cylinder; 16. Second push cylinder; 17. Operation screen; 18. Support ring; 19. Support plate; 20. Connecting belt; 21. Third push cylinder; 22. Mounting bracket; 23. Clamping plate; 24. Chip removal opening; 25. First slide; 26. Second slide; 27. First drive motor; 28. First drill bit chuck; 29. ​​Second drive motor; 30. Second drill bit chuck; 31. Claw chuck; 32. Third drive motor; 33. Gear ring; 34. Gear; 35. Guide slope; 36. Annular opening; 37. Pump; 38. Anti-slip particles; 39. First positioner; 40. Ring rail; 41. Fixing seat; 42. Steel wire strip; 43. Guide groove; 44. Clamping arc block; 45. Claw; 46. Fixing groove; 47. Shockproof strip; 48. Anti-slip convex surface; 49. Connecting block; 50. Telescopic tube; 51. Telescopic rod; 52. Pressure block; 53. Rough surface block; 54. Spring; 55. Second positioner. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0025] like Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, a drilling device for a pulley includes a processing table 10 and a three-jaw chuck 31. The three-jaw chuck 31 is rotatably mounted on the end face of the processing table 10. A supporting plate 19 is connected to the end face of the three-jaw chuck 31. Multiple connecting bands 20 are evenly connected along the circumferential direction on the outer circular surface of the supporting plate 19. A supporting ring 18 is connected to the outer end face of each connecting band 20. Multiple clamping components are evenly arranged along the circumferential direction on the outer side of the supporting ring 18 on the end face of the processing table 10. A first base plate 11 is provided on one side of the supporting ring 18 on the end face of the processing table 10. A second base plate 12 is provided on the end face of the first base plate 11 near the supporting ring 18. Drilling components are provided on the end faces of both the first base plate 11 and the second base plate 12.

[0026] The clamping assembly includes a third push cylinder 21 that is uniformly fixed outside the supporting ring 18 along the circumferential direction. Each third push cylinder 21 has a V-shaped mounting bracket 22 connected to its output end. The mounting bracket 22 has clamping plates 23 on both sides of its upper surface. Each clamping plate 23 has multiple rough surface blocks 53 on its end face near the supporting ring 18. Multiple anti-vibration strips 47 are uniformly arranged between two clamping plates 23 along a straight line. Each anti-vibration strip 47 has multiple anti-slip convex surfaces 48 on its end face.

[0027] 18 is used to place the pulley. When the three-jaw chuck 31 rotates, it drives the support plate 19, the connecting belt 20, and the support ring 18 to rotate, thereby driving the placed pulley to rotate and adjusting the drilling position.

[0028] After the hole position is adjusted, the mounting bracket 22 and the clamping plate 23 will clamp the outer surface of the pulley under the action of the third push cylinder 21. The surface of the rough block 53 on the end face of the clamping plate 23 is roughened to increase the friction with the pulley. Since the mounting bracket 22 is V-shaped, when the rough block 53 clamps the pulley, multiple shock-absorbing bands 47 and anti-slip protrusions 48 will adhere to the outer surface of the pulley. The shock-absorbing bands 47 are made of elastic energy-absorbing material, which can absorb and disperse the vibration generated during drilling while improving the anti-slip friction, ensuring that the pulley can complete the drilling process stably.

[0029] Furthermore, such as Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 11 As shown, the clamping assembly also includes a fixing groove 46 disposed on the end face of each clamping plate 23. Multiple connecting blocks 49 are slidably disposed in the fixing groove 46. Multiple telescopic tubes 50 are disposed on the outer end face of each connecting block 49. A telescopic rod 51 is slidably disposed in the telescopic tube 50. One end of the telescopic rod 51 extends out of the end face of the telescopic tube 50 and is connected to a pressure block 52. A spring 54 is connected to one end of the telescopic rod 51 inside the telescopic tube 50.

[0030] When the pulley is conical, i.e., the diameter of the groove gradually decreases upwards, and the rough surface block 53 cannot effectively clamp the outer conical surface of the pulley, the operator can place a corresponding number of connecting blocks 49 in the fixing groove 46. The fixing groove 46 has multiple fixing holes on its inner end face. By screwing in bolts, the connecting blocks 49 in the fixing groove 46 can be fixed. The stroke of the telescopic tube 50 and the telescopic rod 51 can be selected according to the change of the diameter of the pulley's conical surface, so that the pressure block 52 can effectively abut against the surface of the pulley.

[0031] like Figure 5 , Figure 6 , Figure 12 and Figure 14As shown, multiple jaws 45 are evenly slidably arranged along the circumferential direction on the output end of the three-jaw chuck 31. Each jaw 45 has a clamping arc block 44 detachably arranged on its end face. Each clamping arc block 44 has a V-shaped anti-slip groove on its outer arc surface.

[0032] Multiple jaws 45 and clamping arc blocks 44 are used to perform internal clamping treatment on the inner wall of the pulley shaft hole, so that the three-jaw chuck 31 can drive the pulley to rotate while also performing preliminary clamping treatment on the pulley. Multiple anti-slip grooves on the arc surface of the clamping arc block 44 can also prevent the pulley from slipping when rotating.

[0033] Furthermore, such as Figure 5 and Figure 6 As shown, a fixed base 41 is provided on the bottom of the processing table 10 outside the three-jaw chuck 31. A toothed ring 33 is provided on the outer circular surface of the bottom of the three-jaw chuck 31. A gear 34 is rotatably provided on one side of the toothed ring 33 inside the fixed base 41. The gear 34 and the toothed ring 33 mesh with each other. A third drive motor 32 is provided below the gear 34 at the bottom of the fixed base 41. The output end of the third drive motor 32 is connected to the bottom end face of the gear 34.

[0034] Rotary bearings are provided on the outer surface of the three-jaw chuck 31 on the end face of the machining table 10 and the bottom of the fixed base 41 to ensure stable rotation of the three-jaw chuck 31. The gear ring 33 and gear 34 facilitate rapid rotation of the three-jaw chuck 31.

[0035] like Figure 5 and Figure 13 As shown, a ring rail 40 is provided below the moving ring 18 on the end face of the processing table 10, and the moving ring 18 slides within the ring rail 40 via an annular slider.

[0036] The ring rail 40 and the ring slider provide support for the bottom of the support ring 18 on the end face of the processing table 10, while also facilitating the rapid rotation of the support ring 18.

[0037] like Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, the drilling assembly includes a first rectangular opening 13 disposed on the end face of the second substrate 12, a first slide 25 slidably disposed on the first rectangular opening 13, a first push cylinder 15 fixedly disposed on the end face of the first slide 25, a first drive motor 27 connected to the output end of the first push cylinder 15, and a first drill bit clamp 28 connected to the output end of the first drive motor 27.

[0038] Furthermore, such as Figure 2 , Figure 4 , Figure 5 and Figure 6As shown, the drilling assembly also includes a second rectangular opening 14 disposed on the end face of the first substrate 11, a second slide 26 slidably disposed on the end face of the second rectangular opening 14, a second push cylinder 16 disposed on the end face of the second slide 26, a second drive motor 29 connected to the output end of the second push cylinder 16, and a second drill bit clamp 30 connected to the output end of the second drive motor 29.

[0039] The first slide 25 and the first drill bit chuck 28 are used to drill holes in the end face of the pulley. The second slide 26 and the second drill bit chuck 30 are used to drill holes in the outer circular surface of the pulley. The sliding of the first slide 25 and the second slide 26 outside the first rectangular opening 13 is carried out by a conventional lead screw and slide rail slider, which is existing technology and will not be elaborated on in this article.

[0040] like Figure 5 and Figure 6 As shown, a first positioner 39 is provided on the bottom end face of the connecting belt 20, and a second positioner 55 is provided on the outer side of the first positioner 39 on the end faces of the first slide table 25 and the second slide table 26.

[0041] The first positioner 39 and the second positioner 55 are designed to ensure that the holes on the pulley surface are evenly distributed.

[0042] like Figure 5 , Figure 12 and Figure 13 As shown, multiple anti-slip particles 38 are provided on the end faces of the supporting ring 18 and the supporting plate 19, and steel wire 42 is provided in each connecting strip 20 between the supporting ring 18 and the supporting plate 19.

[0043] The anti-slip particles 38 can reduce the slippage of the pulley on the end face of the support ring 18 and the support plate 19. The steel wire 42 has a certain hardness but also a certain elasticity, which can further absorb the vibration generated when the pulley is drilled.

[0044] like Figure 1 and Figure 5 As shown, an operation screen 17 is provided on the end face of the processing table 10, and a pump 37 is provided below the operation screen 17 inside the processing table 10.

[0045] The control panel 17 is used to operate the various movements of the device, and the pump 37 provides basic power for multiple pneumatic actuators.

[0046] In this embodiment, when the pulley needs to be drilled, the operator places the pulley on the end face of the support plate 19, the connecting belt 20, and the support ring 18. When placing it, simply align the pulley's central shaft hole with the center of the support plate 19, so that the multiple non-moving grippers 45 and the clamping arc block 44 are inside the pulley's shaft hole. Then, after installing the corresponding size drill bit on the first drill bit chuck 28 and the second drill bit chuck 30, the equipment can be started.

[0047] At this time, the three-jaw chuck 31 will be activated, and the three-jaw chuck 31 will drive the multiple jaws 45 on the end face to move outward, thereby driving the clamping arc blocks 44 installed on the jaws 45 to move outward. The arc surface of the outward-moving clamping arc blocks 44 will gradually fit against the inner wall of the pulley shaft hole, thereby clamping the inner wall of the pulley shaft hole, so that the pulley can rotate with the three-jaw chuck 31 without slipping, and has a preliminary clamping effect. In this relationship, since the pulley shaft holes are of different sizes and there are few contact points, the multiple clamping arc blocks 44 cannot stably clamp the pulley, and slippage will still occur when drilling. Therefore, an external clamping component is set up, and the clamping of the clamping arc blocks 44 is only to facilitate the rotation of the pulley.

[0048] After the three-jaw chuck 31 completes clamping, the third drive motor 32 starts. The output end of the third drive motor 32 drives the gear 34 to rotate, thereby driving the gear ring 33 meshing with it to rotate. This causes the three-jaw chuck 31 at the center of the gear ring 33, the pulley clamped by the three-jaw chuck 31, the support plate 19 on the three-jaw chuck 31, the connecting belt 20, and the support ring 18 to rotate, thereby adjusting the hole position.

[0049] If drilling is required on the end face of the pulley during its rotation, the first slide 25 will move back and forth, thereby driving the first push cylinder 15 on the end face of the first slide 25 and the first drive motor 27 at the output end of the first push cylinder 15 to move, thereby driving the first drill bit chuck 28 at the output end of the first drive motor 27 and the cutting tool clamped on the first drill bit chuck 28 to move, so that the equipment can perform drilling on various parts of the end face of the pulley.

[0050] If drilling is required on the outer surface of the pulley, the second slide 26 will move up and down, thereby driving the second push cylinder 16 and the second drive motor 29 at the output end of the second push cylinder 16 to move, thereby driving the second drill bit chuck 30 at the output end of the second drive motor 29 and the cutting tool clamped on the second drill bit chuck 30 to move up and down, so that holes at different heights on the outer surface of the pulley can be drilled. In this relationship, the device will determine the relative position of the multiple first positioners 39 with the second positioners 55 on the first slide 25 and the second slide 26, so as to ensure that each hole can be evenly distributed and there will be no misalignment.

[0051] When drilling is performed on the end face or outer surface of the pulley, after the rotating pulley rotates to the designated position, multiple third push cylinders 21 will be activated. The output end of the third push cylinder 21 pushes the mounting frame 22, thereby pushing the clamping plate 23 on the end face of the mounting frame 22 and the multiple anti-vibration bands 47 between the clamping plates 23 towards the remaining outer surface of the pulley. The V-shaped mounting frame 22, along with the clamping plate 23 and the rough surface block 53, clamps and holds the outer surface of the pulley, so that the pulley can obtain better stability under the triangular clamping formed between the three third push cylinders 21. During this process, because the mounting frame 22 is V-shaped, and between the two clamping plates 23 The multiple shock-absorbing bands 47 are straight in the normal state. Therefore, when the two clamping plates 23 with the rough surface blocks 53 on the end face are attached to the surface of the pulley, the shock-absorbing bands 47 and the multiple anti-slip protrusions 48 on the end face of the shock-absorbing bands 47 will also be attached to the surface of the pulley. The shock-absorbing bands 47 will be taut and bent to different degrees according to the arc surface of the pulley, so that the anti-slip protrusions 48 can better fit the surface of the pulley, thereby improving the anti-slip friction and also improving the fixing effect of the pulley. When drilling the pulley, the multiple shock-absorbing bands 47 wrapped around the outside of the pulley can absorb the vibration generated by drilling the pulley, thereby ensuring that the pulley can be drilled stably.

[0052] If the pulley is conical with each groove having a progressively smaller diameter, and the roughened block 53 can only clamp the groove surface with the largest diameter at the bottom of the pulley, the operator can pre-place multiple connecting blocks 49 sequentially in the fixing groove 46, and then fix them through the mounting holes on the end face of the fixing groove 46. This arrangement ensures that the travel length of the outer end face of the multiple pressure blocks 52 is greater than that of the end face of the roughened block 53, allowing the groove surface with the smaller diameter to be abutted and fixed by the pressure blocks 52 when clamping the conical pulley. During this contact process, the pressure block 52 will retract inward due to pressure, causing the telescopic rod 51 at the bottom of the pressure block 52 to retract inward. This causes the spring 54 at one end of the telescopic rod 51 inside the telescopic tube 50 to be stressed. When the spring 54 is stressed to a certain extent, it can complete the clamping treatment of the grooved tapered surface of the pulley, so that the device can still stably clamp the tapered pulley. In this relationship, multiple stressed but elastic springs 54 can also absorb the vibration generated by drilling, ensuring that the pulley can be drilled stably.

[0053] During the drilling process of the pulley, the steel wires 42 in the multiple connecting belts 20 will also absorb the vibration at the bottom of the pulley during drilling, further improving the stability of the pulley drilling. In this relationship, if the diameter of the pulley is smaller than the inner diameter of the supporting ring 18, the multiple connecting belts 20, together with the supporting plate 19, can also stabilize the bottom of the pulley. Although the connecting belts 20 will bear greater force, the vibration absorption effect will also be improved.

[0054] Example 2:

[0055] like Figure 5 and Figure 6 As shown, a drilling device for a pulley is provided. In the drilling device for a pulley, a plurality of annular openings 36 are evenly arranged in the circumferential direction on the end face of the processing table 10 between the fixed base 41 and the ring rail 40. A conical slope is provided on the end face of the processing table 10 outside the annular openings 36. A guide slope 35 inclined to one side is provided below the annular openings 36 inside the processing table 10. A chip removal opening 24 is provided at one end of the guide slope 35 on the side wall of the processing table 10.

[0056] As a further embodiment, the arrangement of multiple connecting belts 20 creates multiple gaps between the support disc 19 and the support ring 18, allowing the debris generated by the pulley during drilling to fall quickly downwards. The falling debris is guided by the conical slope to multiple annular openings 36, which discharge the debris onto the bottom guide slope 35. The guide slope 35 then discharges the debris outwards through the chip discharge opening 24, enabling the device to smoothly discharge debris during drilling, reducing the accumulation of debris on the bottom contact surface, facilitating subsequent cleaning, and improving processing efficiency.

[0057] Example 3:

[0058] like Figure 5 and Figure 13 As shown, a drilling device for a pulley has a trapezoidal outer surface of a connecting belt 20, and multiple guide grooves 43 are provided on the end face of the connecting belt 20.

[0059] As a further embodiment, the outer surface of the connecting belt 20 is trapezoidal, which allows debris to fall onto the end face of the connecting belt 20 and slide down on its own, reducing the accumulation of debris and the amount of cleaning required. The multiple guide grooves 43 not only improve the chip removal effect but also enhance the anti-slip effect of the end face of the connecting belt 20, allowing the connecting belt 20 to better support the bottom of the pulley.

[0060] The specification and claims use certain terms to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0061] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0062] The foregoing description illustrates and describes several preferred embodiments of this application. However, as previously stated, it should be understood that this application is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the application concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this application should be within the protection scope of the appended claims.

Claims

1. A drilling device for a pulley, comprising a processing table (10) and a three-jaw chuck (31), characterized in that, A three-jaw chuck (31) is rotatably mounted on the end face of the processing table (10). A support plate (19) is connected to the end face of the three-jaw chuck (31). Multiple connecting strips (20) are connected to the outer circular surface of the support plate (19). A support ring (18) is connected to the outer end of each connecting strip (20). Multiple clamping components are provided outside the support ring (18) on the end face of the processing table (10). A first substrate (11) is provided on the end face of the processing table (10). A second substrate (12) is provided on the end face of the first substrate (11). Drilling components are provided on the end faces of both the first substrate (11) and the second substrate (12). The clamping assembly includes multiple mounting brackets (22) slidably disposed outside the supporting ring (18). Each mounting bracket (22) has a clamping plate (23) on both sides of its upper end face. Each clamping plate (23) has multiple rough surface blocks (53) on its end face. Multiple shock-absorbing strips (47) are disposed between two clamping plates (23). Each shock-absorbing strip (47) has multiple anti-slip convex surfaces (48) on its end face.

2. The drilling device for a pulley according to claim 1, characterized in that, The output end of the three-jaw chuck (31) is provided with multiple jaws (45), and each jaw (45) is provided with a clamping arc block (44) detachably on its end face.

3. The drilling device for a pulley according to claim 1, characterized in that, The drilling assembly includes a first rectangular opening (13) disposed on the end face of the second substrate (12), a first slide (25) slidably disposed on the first rectangular opening (13), a first drive motor (27) slidably disposed below the first slide (25), and a first drill bit clamp (28) disposed at the output end of the first drive motor (27).

4. The drilling device for a pulley according to claim 3, characterized in that, The drilling assembly further includes a second rectangular opening (14) disposed on the end face of the first substrate (11), a second slide (26) is slidably disposed on the end face of the second rectangular opening (14), a second drive motor (29) is slidably disposed on one side of the second slide (26), and a second drill bit clamp (30) is disposed at the output end of the second drive motor (29).

5. The drilling device for a pulley according to claim 1, characterized in that, A first locator (39) is provided on the bottom end face of the connecting strip (20), and a second locator (55) is provided on the outer side of the first locator (39) on the end face of the first slide (25) and the second slide (26).

6. The drilling device for a pulley according to claim 1, characterized in that, The clamping assembly also includes a fixing groove (46) disposed on the end face of each clamping plate (23). Multiple connecting blocks (49) are disposed in the fixing groove (46). Multiple telescopic tubes (50) are disposed on the outer end face of each connecting block (49). A telescopic rod (51) is slidably disposed in the telescopic tube (50). One end of the telescopic rod (51) extends out of the end face of the telescopic tube (50) and is connected to a pressure block (52). A spring (54) is connected to one end of the telescopic rod (51) inside the telescopic tube (50).

7. The drilling device for a pulley according to claim 1, characterized in that, Multiple anti-slip particles (38) are provided on the end faces of the supporting ring (18) and the supporting plate (19), and a steel wire (42) is provided in each connecting strip (20) between the supporting ring (18) and the supporting plate (19).

8. The drilling device for a pulley according to claim 7, characterized in that, Multiple guide grooves (43) are provided on the end face of the connecting strip (20).

9. A drilling device for a pulley according to claim 2, characterized in that, The three-jaw chuck (31) is provided with a fixed seat (41) at the bottom of the processing table (10). The fixed seat (41) is provided with a plurality of annular openings (36) on the end face of the processing table (10). A guide slope (35) is provided below the annular openings (36) inside the processing table (10).

10. A drilling device for a pulley according to claim 1, characterized in that, An operation screen (17) is provided on the end face of the processing table (10).

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