A drilling device for producing a support axle of a heavy vehicle

Abstract

The application belongs to the technical field of supporting shaft processing and relates to a drilling device for producing a supporting shaft of a load-carrying vehicle. The drilling device comprises a machine body, a fixed plate fixedly connected to the first end in the machine body, a positioning piece rotatably arranged on the top of the fixed plate and close to the second end of the machine body, a first piston plate slidably sleeved with the first end of the positioning piece through a first spring telescopic rod, a connecting pipe fixedly connected to the first piston plate, a second piston plate horizontally and limitingly slidably sleeved with the other end of the positioning piece through a second spring telescopic rod, a polishing piece fixedly arranged on the side of the second piston plate close to the first piston plate, and a driving piece arranged on the first piston plate and driving the positioning piece to rotate when the first piston plate moves to the side close to the fixed plate. The drilling device has the advantage that the cutting fluid is injected through the connecting pipe to support the inner wall of the bearing outer ring and reduce the stress deformation of the bearing outer ring caused by punching.

Description

Technical Field

[0001] This invention belongs to the field of bearing shaft processing technology, and relates to a drilling device for the production of bearing shafts for heavy-duty vehicles. Background Technology

[0002] The support axle of a heavy-duty truck is a key load-bearing component, primarily used to support the vehicle body and load, and ensure stable wheel rotation. Because the support axle must withstand high-frequency heavy loads, impacts, and alternating loads during operation, its end is typically fitted with a bearing to reduce frictional loss between the support axle and the wheel hub, and to improve rotational accuracy and operational reliability. To ensure adequate lubrication and smooth operation of the bearing under long-term heavy-load conditions, lubrication holes need to be machined on the outer ring of the bearing for periodic lubrication; therefore, a drilling device is used.

[0003] A bearing outer ring drilling device disclosed in Chinese Patent 202411423060.4 includes a fixed plate and a second servo motor. Supporting angle plates are symmetrically installed on the bottom front side of the fixed plate. A bottom clamping seat is fixedly installed in the middle of the bottom front side of the fixed plate. The bearing outer ring body is placed on the top surface of the bottom clamping seat. A movable clamping mechanism is installed on the rear side of the fixed plate. The movable clamping mechanism includes a limiting seat symmetrically installed in the middle of the rear side of the fixed plate. An adjusting screw is rotatably installed through the inside of the limiting seat. Rotary handles are fixedly installed at both ends of the adjusting screw. A movable seat is sleeved on the outer ring of the adjusting screw located inside the limiting seat. A side clamping block is fixedly installed on the inner front end of the movable seat.

[0004] This drilling device uses two side clamping blocks to hold the bearing outer ring from the outside, but it does not support the inner wall of the bearing outer ring at the drilling location. Since the bearing outer ring is a hollow cylinder, this may cause deformation during the drilling process, affecting the overall quality of the bearing ring. Furthermore, after drilling the bearing outer ring, burrs will be generated on the inner wall of the bearing outer ring, requiring separate deburring work. This makes it difficult to integrate drilling and deburring operations, thus impacting production efficiency.

[0005] To address the aforementioned problems, this invention proposes a drilling device for the production of support shafts for heavy-duty vehicles. Summary of the Invention

[0006] To address the problems existing in the background art, the present invention proposes a drilling device for the production of support shafts for heavy-duty vehicles.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: It includes a body, a fixed plate fixedly connected to a first end of the body, a positioning element rotatably disposed on the top of the fixed plate near the second end of the body, a first piston plate slidably sleeved on one end of the positioning element near the fixed plate via a first spring telescopic rod, a connecting pipe fixedly connected to the first piston plate, a second piston plate horizontally limited and slidably sleeved on the other end of the positioning element via a second spring telescopic rod, and a grinding element fixedly disposed on the side of the second piston plate near the first piston plate; The first piston plate is provided with a driving component. When the first piston plate moves toward the side closer to the fixed plate, the driving component drives the positioning component to rotate. A movable plate is horizontally slidably provided on the top of the second end of the machine body. An electric turntable is installed on the side of the movable plate that is close to the fixed plate. The outer ring of the bearing is movably abutted between the rotating ends of the two electric turntables. The inner wall of the outer ring of the bearing is in a sealed sliding fit with the outer surface of the first piston plate and the second piston plate. A drilling assembly is horizontally slidably mounted on the top of the machine body between the fixed plate and the movable plate.

[0008] Furthermore, the positioning component includes a shaft and a rectangular rod. One end of the shaft is rotatably connected to one side of the fixed plate, and one end of the rectangular rod is fixedly connected to the other end of the shaft. The first piston plate is slidably sleeved on the shaft, and the second piston plate is horizontally slidably sleeved on the rectangular rod.

[0009] Furthermore, there are two first spring telescopic rods, which are symmetrically fixed through the fixing plate. The first spring telescopic rods are arranged horizontally, and the first piston plate is fixedly connected to the ends of the telescopic ends of the two first spring telescopic rods.

[0010] Furthermore, a circular plate is fixedly connected to the end of the rectangular rod away from the shaft. Two second spring telescopic rods are provided, and the two second spring telescopic rods are symmetrically fixedly connected to one side of the circular plate. The two second spring telescopic rods correspond one-to-one with the two first spring telescopic rods. The second piston plate is fixedly connected to the ends of the telescopic ends of the two second spring telescopic rods.

[0011] Furthermore, the drive component includes balls that are rolled on the inner wall of the first piston plate through which the shaft passes; The outer surface of the shaft is provided with a spiral groove and a horizontal groove from one end near the fixed plate to the other. One end of the horizontal groove is connected to the end of the spiral groove near the fixed plate. The ball bearings are rolled in the horizontal groove and the spiral groove.

[0012] Furthermore, the first piston plate is provided with a liquid inlet hole, and a one-way valve is provided in the liquid inlet hole. The one-way valve causes the liquid in the liquid inlet hole to flow towards the side closer to the second piston plate. One end of the connecting pipe is fixedly connected to the liquid inlet hole on one side of the first piston plate, and the connecting pipe slides horizontally through the fixed plate.

[0013] Furthermore, a circular groove is provided on the side of the movable plate near the fixed plate, the circular plate is movably disposed in the circular groove, the outer surface of the circular plate is in a sealing sliding fit with the inner wall of the circular groove, and a through hole is provided in the middle of the end face of the circular groove. The top surface of each of the two sides of the machine body is fixedly installed with a first electric slide rail along its length, and the two ends of the bottom of the movable plate are respectively fixedly installed on the sliding ends of the two first electric slide rails.

[0014] Furthermore, an arc-shaped plate is fixedly connected to the side of the fixed plate near the movable plate. The arc-shaped plate is coaxial with the rotating end of the first piston plate, the second piston plate, and the electric turntable. The outer surface of the bearing outer ring is in a sealing sliding fit with the inner wall of the arc-shaped plate. The notch of the arc-shaped plate is located below it, and the top of the drilling assembly corresponds to the notch of the arc-shaped plate.

[0015] Furthermore, the grinding component includes several grinding blocks, which are uniformly and fixedly connected to the outer surface of one side of the second piston plate. Each grinding block is a right-angled triangular block, with one right-angled face of the grinding block fixed to the second piston plate and the other right-angled face of the grinding block coplanar with the outer surface of the second piston plate. The outer surface of the first piston plate near the second piston plate has a number of storage slots evenly distributed. The number of storage slots is equal to the number of grinding blocks and corresponds one-to-one. The grinding blocks slide and engage in the corresponding storage slots.

[0016] Furthermore, the drilling assembly includes a drill bit, and two second electric slide rails are fixedly installed on the inner walls of the two sides of the top of the machine body along the length of the machine body. The sliding ends of the two second electric slide rails are fixedly connected to the same mounting plate. A cylinder is fixedly installed on the top of the mounting plate, and a motor is fixedly installed on the top of the telescopic end of the cylinder. The drill bit is fixedly installed on the output end of the motor.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The drilling device for producing support shafts of heavy-duty vehicles is equipped with a connecting pipe. Cutting fluid is injected into the sealed cavity formed by the first piston plate, the second piston plate, and the outer ring of the bearing through the connecting pipe. As the amount of cutting fluid increases, it will generate pressure on the outer ring of the bearing, thereby supporting the inner wall of the outer ring of the bearing, reducing the stress deformation of the outer ring of the bearing due to drilling, and effectively improving the drilling accuracy and the overall quality of the outer ring of the bearing.

[0018] 2. The drilling device for producing support shafts of heavy-duty vehicles is equipped with a grinding block, which is fixed on the second piston plate. After drilling the outer ring of the bearing, the second piston plate and the grinding block are driven to rotate by the cooperation of the ball and the spiral groove, which automatically grinds the burrs generated at the drilling point of the outer ring of the bearing, realizing the integrated operation of drilling and deburring, and improving production efficiency.

[0019] 3. The drilling device for producing support shafts of heavy-duty vehicles is equipped with a connecting pipe. After drilling the outer ring of the bearing with the drill bit, the cutting fluid inside will be sprayed downwards from the drilling position onto the drill bit to cool and remove debris, reduce the impact of residual iron filings on drilling accuracy, and extend the tool life.

[0020] 4. The drilling device for producing support shafts of heavy-duty vehicles is equipped with a grinding block. When the grinding block is used to rotate and grind the burrs generated on the inner wall of the outer ring of the bearing, the cutting fluid discharged from the drilling point will carry away the debris generated during grinding, thereby achieving cooling and self-cleaning of the grinding process.

[0021] 5. The drilling device for producing support shafts of heavy-duty vehicles is equipped with an arc-shaped plate. The arc-shaped plate, together with the first piston plate and the second piston plate, limits the outer ring of the bearing, increasing the stability of the outer ring. When drilling multiple holes in the outer ring of the bearing, the arc-shaped plate can block the completed drilling positions, preventing liquid from spraying out of the already machined holes during subsequent drilling, thus ensuring the orderly processing of multiple holes. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the fixing plate in this invention; Figure 3 This is a schematic diagram of the movable plate in this invention; Figure 4 This is a cross-sectional view of the fixing plate in this invention; Figure 5 This is a schematic diagram of the connecting pipe in this invention; Figure 6 This is a schematic diagram of the structure of the shaft and rectangular rod in this invention; Figure 7 This is a schematic diagram of the structure of the grinding block in this invention; Figure 8 This is a schematic diagram of the structure of the grinding block and the oil hole in this invention; Figure 9 This is a schematic diagram of the structure of the first piston plate and the second piston plate in this invention. Figure 10 This is a schematic diagram of the structure of the first piston plate and the second piston plate in this invention from a first-view perspective; Figure 11 This is a structural schematic diagram of the first piston plate and the second piston plate in this invention from a second perspective; Figure 12 This is a schematic diagram of the initial clamping structure of the bearing outer ring in this invention; Figure 13 This is a schematic diagram of the structure after positioning the outer ring of the bearing in this invention; Figure 14 This is a schematic diagram of the structure for grinding the oil hole position inside the outer ring of the bearing in this invention.

[0023] In the diagram: 1. Machine body; 2. Fixed plate; 3. First electric turntable; 4. Arc plate; 5. First piston plate; 6. Storage groove; 7. Second piston plate; 8. Grinding block; 9. Shaft; 10. Rectangular rod; 11. Circular plate; 12. Transverse slide groove; 13. Spiral slide groove; 14. Ball bearing; 15. First spring telescopic rod; 16. Second spring telescopic rod; 17. Connecting pipe; 18. One-way valve; 19. First electric slide rail; 20. Movable plate; 21. Second electric turntable; 22. Circular groove; 23. Second electric slide rail; 24. Mounting plate; 25. Cylinder; 26. Motor; 27. Drill bit; 28. Bearing outer ring; 29. ​​Oil hole. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] like Figures 1-14 As shown, the technical solution adopted by the present invention is as follows: A drilling device for the production of support shafts for heavy-duty vehicles includes a body 1, which is a rectangular box-shaped structure with an open top and a hollow interior. A fixing plate 2 is fixedly connected to the first end inside the body 1, and a positioning element is rotatably disposed on the top of the fixing plate 2 near the second end of the body 1. The top end of the fixing plate 2 extends above the body 1, and the positioning element is located directly above the internal cavity of the body 1.

[0026] The positioning components include a shaft 9 and a rectangular rod 10. One end of the shaft 9 is rotatably connected to one side of the fixed plate 2, and one end of the rectangular rod 10 is fixedly connected to the other end of the shaft 9. Both the shaft 9 and the rectangular rod 10 are arranged horizontally. The vertical cross-section of the shaft 9 is circular, and the vertical cross-section of the rectangular rod 10 is rectangular. Furthermore, the four endpoints of the rectangular rod 10 closest to the shaft 9 are all located on the outer circle of the shaft 9.

[0027] The first piston plate 5 is slidably sleeved on the end of the positioning component near the fixed plate 2 via the first spring telescopic rod 15, and the first piston plate 5 is slidably sleeved on the shaft 9.

[0028] Two first spring telescopic rods 15 are provided, symmetrically fixed through the fixed plate 2, and horizontally arranged. The first piston plate 5 is fixedly connected to the telescopic ends of the two first spring telescopic rods 15. The two first spring telescopic rods 15 restrict the first piston plate 5 to move only horizontally, while the shaft 9 can rotate within the first piston plate 5.

[0029] The other end of the positioning component is horizontally limited and slidably fitted with a second piston plate 7 via a second spring telescopic rod 16. The second piston plate 7 is horizontally slidably fitted on the rectangular rod 10, and the second piston plate 7 cannot slide onto the shaft 9. Due to the shape limitation of the rectangular rod 10, the second piston plate 7 can only slide horizontally along it, and when the rectangular rod 10 rotates, it will drive the second piston plate 7 to rotate together.

[0030] A circular plate 11 is fixedly connected to the end of the rectangular rod 10 away from the shaft 9. The circular plate 11 is coaxial with the shaft 9. Two second spring telescopic rods 16 are provided, and the two second spring telescopic rods 16 are symmetrically fixedly connected to one side of the circular plate 11. The two second spring telescopic rods 16 correspond one-to-one with the two first spring telescopic rods 15. The second piston plate 7 is fixedly connected to the telescopic ends of the two second spring telescopic rods 16.

[0031] The first piston plate 5 and the second piston plate 7 have the same diameter and are coaxial. In the initial state, the first spring telescopic rod 15 and the second spring telescopic rod 16 work together to push the first piston plate 5 and the second piston plate 7 to fit tightly together.

[0032] The spring telescopic rod is a telescopic sleeve structure with an internal compression spring, including an outer sleeve, an inner slide rod, and an internal compression spring. It is an existing product and will not be described in detail.

[0033] A connecting pipe 17 is fixedly connected to the first piston plate 5.

[0034] The first piston plate 5 has a liquid inlet hole, and a one-way valve 18 is installed in the liquid inlet hole. The one-way valve 18 causes the liquid in the liquid inlet hole to flow towards the side closer to the second piston plate 7, while the liquid between the second piston plate 7 and the first piston plate 5 cannot be discharged from the liquid inlet hole.

[0035] One end of the connecting pipe 17 is fixedly connected to the fluid inlet on one side of the first piston plate 5, and the connecting pipe 17 slides horizontally through the fixed plate 2. A portion of the connecting pipe 17 passing through the fixed plate 2 is a horizontal rigid pipe, which adapts to the movement of the first piston plate 5; the portion of the connecting pipe 17 away from the fixed plate 2 can be designed as a flexible hose, which facilitates the connection of cutting fluid.

[0036] The spring stiffness inside the second spring telescopic rod 16 is greater than that inside the first spring telescopic rod 15. Spring stiffness is a physical quantity that describes the ease with which a spring deforms when subjected to external force. That is, when cutting fluid is introduced between the first piston plate 5 and the second piston plate 7, the first spring telescopic rod 15 deforms first, but when the cutting fluid is discharged, the second spring telescopic rod 16 extends first.

[0037] A driving component is provided on the first piston plate 5. When the first piston plate 5 moves toward the side closer to the fixed plate 2, the driving component drives the positioning component to rotate.

[0038] The drive component includes a ball bearing 14, which is rolled on the inner wall of the first piston plate 5 through which the shaft 9 passes, and the ball bearing 14 can move horizontally together with the first piston plate 5.

[0039] The outer surface of the shaft 9 has a spiral groove 13 and a horizontal groove 12 sequentially formed from one end near the fixed plate 2 to the other. One end of the horizontal groove 12 is connected to the end of the spiral groove 13 near the fixed plate 2. Ball bearings 14 are rotatably disposed within the horizontal groove 12 and the spiral groove 13. The horizontal groove 12 guides the horizontal movement of the first piston plate 5, while when the ball bearings 14 move into the spiral groove 13, they convert the horizontal displacement of the first piston plate 5 into rotational power for the shaft 9, thereby driving the shaft 9 to rotate.

[0040] A grinding element is fixedly installed on the side of the second piston plate 7 near the first piston plate 5.

[0041] The grinding component includes several grinding blocks 8, which are uniformly and fixedly connected to the outer surface of one side of the second piston plate 7. Each grinding block 8 is a right-angled triangular block. One right-angled face of the grinding block 8 is fixed to the second piston plate 7, and the other right-angled face of the grinding block 8 is coplanar with the outer surface of the second piston plate 7; that is, the other right-angled face of the grinding block 8 is set in an arc shape that adapts to the outer surface of the second piston plate 7. The grinding blocks 8 are made of abrasive material, so that when the grinding blocks 8 rotate with the second piston plate 7, they perform grinding work through the right-angled face coplanar with the outer surface of the second piston plate 7.

[0042] Several storage slots 6 are evenly distributed on the outer surface of the first piston plate 5 near the second piston plate 7. The number of storage slots 6 is equal to the number of grinding blocks 8 and corresponds one-to-one. The grinding blocks 8 slide and engage in the corresponding storage slots 6. The storage slots 6 and grinding blocks 8 are fitted with a clearance fit, which ensures a secure engagement while facilitating the smooth sliding in and out of the grinding blocks 8. When the grinding blocks 8 are located in the storage slots 6, the first piston plate 5 and the second piston plate 7 cooperate to form a complete cylindrical body.

[0043] The length of the transverse groove 12 is slightly greater than the length of the grinding block 8, so that when the ball 14 moves in the transverse groove 12, the grinding block 8 can be completely moved into the storage groove 6 or the grinding block 8 can be completely removed from the storage groove 6.

[0044] A movable plate 20 is horizontally slidably mounted on the top of the second end of the body 1.

[0045] Two electric slide rails 19 are fixedly installed along the length of the top surface of each of the two sides of the body 1. The two ends of the bottom of the movable plate 20 are respectively fixedly installed on the sliding ends of the two electric slide rails 19. The two electric slide rails 19 are electrically connected to the same synchronous controller, so that the two electric slide rails 19 cooperate to drive the movable plate 20 to move smoothly.

[0046] A circular groove 22 is formed on the side of the movable plate 20 near the fixed plate 2, and a circular plate 11 is movably disposed within the circular groove 22. The outer surface of the circular plate 11 is in a sealing sliding fit with the inner wall of the circular groove 22, and a through hole is formed in the middle of the end face of the circular groove 22. When the circular plate 11 is located in the circular groove 22, the through hole allows the inner cavity of the circular groove 22 to communicate with the external gas, thereby accommodating the movement of the circular plate 11.

[0047] An electric turntable is installed on the side of the movable plate 20 that is close to the fixed plate 2. The rotating ends of the two electric turntables are movably abutting against the outer ring 28 of the bearing. The rotating ends of the two electric turntables are coaxial and are electrically connected to the same synchronous controller, so that the rotating ends of the two electric turntables rotate synchronously, thereby driving the outer ring 28 of the bearing to rotate smoothly.

[0048] Electric turntables mainly consist of an electric motor, a reducer, a turntable platform, bearings, and a control system. The principle can be simply summarized as the electric motor driving the turntable platform to rotate. Electric turntables are commonly used in dining tables, logistics warehousing, exhibition displays, and other fields, and are an existing product.

[0049] For ease of description, the two electric turntables are named the first electric turntable 3 and the second electric turntable 21, respectively. The first electric turntable 3 is mounted on the fixed plate 2, and the second electric turntable 21 is mounted on the movable plate 20.

[0050] An arc-shaped plate 4 is fixedly connected to the side of the fixed plate 2 near the movable plate 20. The arc-shaped plate 4 is located outside the first electric turntable 3. The outer surface of the bearing outer ring 28 is in a sealing sliding fit with the inner wall of the arc-shaped plate 4, and the arc-shaped plate 4 positions the bearing outer ring 28 from the outside. The inner wall of the bearing outer ring 28 is in a sealing sliding fit with the outer surfaces of the first piston plate 5 and the second piston plate 7, and the first piston plate 5 and the second piston plate 7 position the bearing outer ring 28 from the inside.

[0051] The arc plate 4 is coaxial with the first piston plate 5, the second piston plate 7, and the rotating end of the electric turntable, so that after the bearing outer ring 28 is fitted onto the first piston plate 5 and the second piston plate 7, the bearing outer ring 28 can be coaxial with the rotating end of the electric turntable, thus facilitating the rotation of the bearing outer ring 28.

[0052] Both the fixed plate 2 and the movable plate 20 are provided with ventilation holes. After the outer ring 28 of the bearing is fitted onto the first piston plate 5 and the second piston plate 7, the space between the fixed plate 2 and the movable plate 20 is sealed. The ventilation holes facilitate the horizontal movement of the first piston plate 5 and the second piston plate 7 within the outer ring 28 of the bearing.

[0053] A drilling assembly is horizontally slidably mounted on the top of the body 1 between the fixed plate 2 and the movable plate 20.

[0054] The notch of the arc-shaped plate 4 is located below it, and the top of the drilling assembly corresponds to the notch of the arc-shaped plate 4. The drilling assembly drills a hole in the outer ring 28 of the bearing through the notch.

[0055] The drilling assembly includes a drill bit 27. Two second electric slide rails 23 are fixedly installed on the inner walls of the two sides at the top of the body 1, along the length of the body 1. The sliding ends of the two second electric slide rails 23 are fixedly connected to the same mounting plate 24. The two second electric slide rails 23 are electrically connected to the same synchronous controller, enabling the two second electric slide rails 23 to cooperate in driving the mounting plate 24 to move smoothly.

[0056] Electric sliding rails are systems that use electric drive to move various objects. They are used in applications such as car seat adjustment and film shooting. Since they are existing products, we will not go into further detail.

[0057] A synchronization controller, whether a commercially available PLC controller or a dedicated motion control card, is a control device used to coordinate the synchronous operation of multiple devices or systems. Its core functions include time synchronization, motion synchronization, data synchronization, and signal synchronization, which are standard technical methods in this field.

[0058] A cylinder 25 is fixedly mounted on the top of the mounting plate 24. A motor 26 is fixedly mounted on the top of the telescopic end of the cylinder 25. The drill bit 27 is fixedly mounted on the output end of the motor 26. The cylinder 25 controls the lifting and feeding of the drill bit 27, and the motor 26 provides the rotational cutting power for the drill bit 27.

[0059] The hole drilled by drill bit 27 on the outer ring 28 of the bearing is an oil hole 29. The width of the grinding block 8 is smaller than the diameter of the oil hole 29, so that the grinding block 8 will not block the oil hole 29. The length of the grinding surface of the grinding block 8 is greater than the diameter of the oil hole 29, so that the grinding block 8 can grind the entire edge of the opening of the oil hole 29.

[0060] Working principle: In use, the outer ring 28 of the bearing is fitted onto the outside of the first piston plate 5 and the second piston plate 7, and one end of the outer ring 28 is abutted against the rotating end of the first electric turntable 3. At the same time, the outer ring 28 of the bearing also slides into the arc plate 4, and the grinding block 8 is located in the middle of the outer ring 28 of the bearing.

[0061] The first electric slide rail 19 is activated, and its sliding end drives the movable plate 20 to slide on the top of the machine body 1. The movable plate 20 moves closer to the fixed plate 2, causing the circular groove 22 to move outward from the circular plate 11.

[0062] When the other end of the bearing outer ring 28 comes into contact with the rotating end of the second electric turntable 21, the first electric slide rail 19 stops moving. At this time, the bearing outer ring 28 is clamped and fixed between the two electric turntables.

[0063] Start the two electric turntables. The rotating end of the electric turntables will drive the outer ring 28 of the bearing to rotate, so that the drilled position of the outer ring 28 of the bearing faces downward. Alternatively, the position can be adjusted directly when installing the outer ring 28 of the bearing.

[0064] In this state, the inner wall of the bearing outer ring 28 is in a sealed sliding fit with the outer surfaces of the first piston plate 5 and the second piston plate 7, and the outer wall of the bearing outer ring 28 is in a sealed sliding fit with the inner wall of the arc plate 4.

[0065] Cutting fluid is injected into the sealed cavity formed by the first piston plate 5, the second piston plate 7 and the outer ring 28 of the bearing through the connecting pipe 17 and the one-way valve 18. As the cutting fluid is continuously injected, the pressure in the cavity increases, pushing the first piston plate 5 and the second piston plate 7 away from each other.

[0066] Since the spring stiffness of the first spring telescopic rod 15 is less than that of the second spring telescopic rod 16, the cutting fluid pressure preferentially pushes the first piston plate 5 to move closer to the fixed plate 2 and compresses the first spring telescopic rod 15.

[0067] The first piston plate 5 first drives the ball bearing 14 to slide within the transverse groove 12, causing the first piston plate 5 to move horizontally. At the same time, the first piston plate 5 drives the receiving groove 6 to move, causing the receiving groove 6 to move away from the grinding block 8.

[0068] After the ball bearing 14 slides to the end of the transverse groove 12, the first piston plate 5 continues to move, and the ball bearing 14 enters the spiral groove 13. The transverse movement of the ball bearing 14 drives the spiral groove 13 to rotate, forcing the shaft 9 to rotate. The shaft 9 drives the second piston plate 7 and the grinding block 8 to rotate synchronously through the rectangular rod 10.

[0069] As the amount of cutting fluid increases, the pressure inside the cavity rises, causing the second piston plate 7 to move towards the movable plate 20 as it rotates.

[0070] When the first piston plate 5 moves, it causes the connecting pipe 17 to slide on the fixed plate 2 until the first piston plate 5 abuts against one side of the fixed plate 2. The second piston plate 7 abuts against one side of the movable plate 20, while the cutting fluid in the cavity exerts pressure on the outer ring 28 of the bearing, which supports the inner wall of the outer ring 28 of the bearing.

[0071] Then, the injection of cutting fluid into the cavity is stopped, and the cutting fluid will not flow out under the action of the one-way valve 18. At this time, the first piston plate 5 and the second piston plate 7 are located at the two ends of the outer ring 28 of the bearing, respectively, making room for the drilling position.

[0072] The second electric slide rail 23 is activated, which moves the mounting plate 24 horizontally towards the side closer to the arc-shaped plate 4. The mounting plate 24 then moves the cylinder 25, motor 26, and drill bit 27 until the tip of the drill bit 27 is aligned with the center of the bottom of the outer ring 28 of the bearing. This center position is also aligned with the end where the shaft 9 connects to the rectangular rod 10. The center position is chosen to facilitate subsequent grinding with the grinding block 8, and also to allow the lubricating oil to enter the bearing's load-bearing area more directly when adding lubricating oil, quickly forming an oil film and improving lubrication efficiency.

[0073] The starter motor 26 drives the drill bit 27 to rotate, while the cylinder 25 extends, driving the drill bit 27 to feed upwards. The drill bit 27 passes through the notch below the arc plate 4 to drill a hole in the outer ring 28 of the bearing. During the drilling process, the high-pressure cutting fluid in the sealed cavity continuously provides support to the inner wall of the outer ring 28 of the bearing, effectively preventing deformation at the drilling location due to concentrated force.

[0074] During the drilling process, an external water spray device can be used to cool the drilling site.

[0075] After drill bit 27 penetrates the side wall of bearing outer ring 28 to form oil hole 29, cutting fluid in the sealed cavity is sprayed outward through oil hole 29. The sprayed cutting fluid directly washes over drill bit 27, cooling it and removing metal filings. Subsequently, cylinder 25 contracts, causing drill bit 27 to exit oil hole 29.

[0076] The cutting fluid flowing downwards will fall into the machine body 1. In order to prevent the cutting fluid from damaging the cylinder 25 and the motor 26, the cylinder 25 and the motor 26 need to be waterproof.

[0077] During the discharge of cutting fluid, the pressure inside the cavity gradually decreases. Since the spring stiffness of the second spring telescopic rod 16 is greater than that of the first spring telescopic rod 15, the second spring telescopic rod 16 extends first, pushing the second piston plate 7 to move closer to the first piston plate 5 on the rectangular rod 10.

[0078] Since the ball 14 is located at the end of the spiral groove 13 at this time, the spiral groove 13 has resistance to the movement of the ball 14. The pressure of the cutting fluid remaining in the sealed cavity and the reverse thrust transmitted by the liquid during the reset process of the second piston plate 7 work together to make the first piston plate 5 tend to move towards the fixed plate 2, which further prevents the first piston plate 5 from resetting prematurely. At this time, the first piston plate 5 cannot move.

[0079] After the second piston plate 7 abuts against the end of the shaft 9, the second piston plate 7 returns to its initial state and no longer moves, so that the grinding block 8 corresponds to the oil hole 29.

[0080] When the second piston plate 7 stops moving, the second electric slide rail 23 needs to be driven to move the drill bit 27 away from the coolant outlet position so that the coolant no longer flows onto the drill bit 27.

[0081] Since the grinding block 8 did not seal the oil hole 29, as the cutting fluid continued to flow out, the telescopic end of the first spring telescopic rod 15 gradually extended, pushing the first piston plate 5 to move towards the second piston plate 7.

[0082] The first piston plate 5 first drives the ball bearing 14 to slide within the spiral groove 13, thereby driving the shaft 9 to rotate, which in turn causes the rectangular rod 10 to drive the second piston plate 7 to rotate. The circular plate 11 and the second spring telescopic rod 16 also rotate accordingly, and the circular groove 22 positions the circular plate 11 to ensure smooth rotation.

[0083] The second piston plate 7 drives the grinding block 8 to rotate on the inner wall of the bearing outer ring 28, grinding the burrs on the edge of the oil hole 29. The grinding debris generated during grinding is discharged downwards along with the cutting fluid, and the continuously discharged cutting fluid also helps to cool the burr removal process. Since the drill bit 27 has been removed previously, the debris will not fall onto the drill bit 27 and cause contamination.

[0084] When the ball bearing 14 moves to the end of the spiral groove 13, it will continue to move into the transverse groove 12 and no longer drive the shaft 9 to rotate, thus stopping the second piston plate 7 from rotating.

[0085] When the ball bearing 14 moves into the transverse slide groove 12, the receiving groove 6 corresponds one-to-one with the grinding block 8. The first spring telescopic rod 15 continues to extend, causing the receiving groove 6 to move onto the corresponding grinding block 8, until the first piston plate 5 and the second piston plate 7 re-fit.

[0086] If multiple oil holes 29 need to be machined on the outer ring 28 of the bearing, the first electric turntable 3 and the second electric turntable 21 rotate synchronously, driving the outer ring 28 of the bearing to rotate, so that the next position to be machined corresponds to the drill bit 27.

[0087] When the outer ring 28 of the bearing rotates, the pre-machined oil hole 29 rotates to the inner wall of the arc plate 4. The arc plate 4 acts as a barrier to prevent the cutting fluid from flowing out of the pre-machined hole. Then, the above steps are repeated to drill the hole.

[0088] After processing, the first electric slide rail 19 drives the movable plate 20 away from the fixed plate 2, and removes the outer ring 28 of the bearing.

[0089] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A drilling device for producing support axles for heavy-duty vehicles, characterized in that: Includes a body (1), a fixed plate (2) is fixedly connected to the first end of the body (1), a positioning component is rotatably provided on the top of the fixed plate (2) near the second end of the body (1), a first piston plate (5) is slidably sleeved on the end of the positioning component near the fixed plate (2) through a first spring telescopic rod (15), a connecting pipe (17) is fixedly connected on the first piston plate (5), a second piston plate (7) is slidably sleeved on the other end of the positioning component through a second spring telescopic rod (16), and a grinding component is fixedly provided on the side of the second piston plate (7) near the first piston plate (5); A driving component is provided on the first piston plate (5). When the first piston plate (5) moves to the side closer to the fixed plate (2), the driving component drives the positioning component to rotate. A movable plate (20) is horizontally slidably provided on the top of the second end of the body (1). An electric turntable is installed on the side of the movable plate (20) that is close to the fixed plate (2). The rotating ends of the two electric turntables are movably abutted against the outer ring of the bearing (28). The inner wall of the outer ring of the bearing (28) is sealed and slidably fitted with the outer surface of the first piston plate (5) and the second piston plate (7). The top of the body (1) is horizontally slidably disposed between the fixed plate (2) and the movable plate (20).

2. The drilling device for producing support shafts of heavy-duty vehicles according to claim 1, characterized in that: The positioning component includes a shaft (9) and a rectangular rod (10). One end of the shaft (9) is rotatably connected to one side of the fixed plate (2), and one end of the rectangular rod (10) is fixedly connected to the other end of the shaft (9). The first piston plate (5) is slidably sleeved on the shaft (9), and the second piston plate (7) is horizontally slidably sleeved on the rectangular rod (10).

3. The drilling device for producing support shafts of heavy-duty vehicles according to claim 2, characterized in that: There are two first spring telescopic rods (15), and the two first spring telescopic rods (15) are symmetrically fixed through the fixed plate (2). The first spring telescopic rods (15) are arranged horizontally, and the first piston plate (5) is fixedly connected to the ends of the telescopic ends of the two first spring telescopic rods (15).

4. A drilling device for producing support shafts for heavy-duty vehicles according to claim 3, characterized in that: The rectangular rod (10) is fixedly connected to a circular plate (11) at one end away from the shaft (9). There are two second spring telescopic rods (16). The two second spring telescopic rods (16) are symmetrically fixedly connected to one side of the circular plate (11). The two second spring telescopic rods (16) correspond one-to-one with the two first spring telescopic rods (15). The second piston plate (7) is fixedly connected to the end of the telescopic end of the two second spring telescopic rods (16).

5. A drilling device for producing support shafts of heavy-duty vehicles according to claim 2, characterized in that: The drive component includes a ball (14) that is rolled on the inner wall of the first piston plate (5) through which the shaft (9) passes; The outer surface of the shaft (9) is provided with a spiral groove (13) and a horizontal groove (12) in sequence from one end near the fixed plate (2) to the other end. One end of the horizontal groove (12) is connected to the end of the spiral groove (13) near the fixed plate (2). The ball (14) is rolled in the horizontal groove (12) and the spiral groove (13).

6. A drilling device for producing support shafts for heavy-duty vehicles according to claim 1, characterized in that: The first piston plate (5) has an inlet hole, and a one-way valve (18) is installed in the inlet hole. The one-way valve (18) causes the liquid in the inlet hole to flow towards the side closer to the second piston plate (7). One end of the connecting pipe (17) is fixedly connected to the inlet hole on one side of the first piston plate (5), and the connecting pipe (17) slides horizontally through the fixed plate (2).

7. A drilling device for producing support shafts for heavy-duty vehicles according to claim 4, characterized in that: A circular groove (22) is provided on the side of the movable plate (20) near the fixed plate (2). The circular plate (11) is movably disposed in the circular groove (22). The outer surface of the circular plate (11) is sealed and slidably fitted with the inner wall of the circular groove (22). A through hole is provided in the middle of the end face of the circular groove (22). The top surfaces of the two sides of the body (1) are each fixedly installed with a first electric slide rail (19) along its length direction. The two ends of the bottom of the movable plate (20) are respectively fixedly installed on the sliding ends of the two first electric slide rails (19).

8. A drilling device for producing support shafts for heavy-duty vehicles according to claim 1, characterized in that: The fixed plate (2) is fixedly connected to an arc-shaped plate (4) on the side near the movable plate (20). The arc-shaped plate (4) is coaxial with the first piston plate (5), the second piston plate (7), and the rotating end of the electric turntable. The outer surface of the bearing outer ring (28) is in a sealed sliding fit with the inner wall of the arc-shaped plate (4). The notch of the arc plate (4) is located below it, and the top of the drilling assembly corresponds to the notch of the arc plate (4).

9. A drilling device for producing support shafts for heavy-duty vehicles according to claim 1, characterized in that: The grinding component includes several grinding blocks (8), which are uniformly fixedly connected to the outer surface of one side of the second piston plate (7). The grinding block (8) is a right-angled triangular block. One right-angled surface of the grinding block (8) is fixed to the second piston plate (7), and the other right-angled surface of the grinding block (8) is coplanar with the outer surface of the second piston plate (7). The outer surface of the first piston plate (5) near the second piston plate (7) is provided with a number of storage slots (6). The number of storage slots (6) is equal to the number of grinding blocks (8) and they correspond one to one. The grinding blocks (8) are slidably engaged in the corresponding storage slots (6).

10. A drilling device for producing support shafts of heavy-duty vehicles according to claim 1, characterized in that: The drilling assembly includes a drill bit (27). Two electric slide rails (23) are fixedly installed on the inner walls of the two sides of the top of the machine body (1) along the length direction of the machine body (1). The sliding ends of the two electric slide rails (23) are fixedly connected to the same mounting plate (24). A cylinder (25) is fixedly installed on the top of the mounting plate (24). A motor (26) is fixedly installed on the top of the telescopic end of the cylinder (25). The drill bit (27) is fixedly installed on the output end of the motor (26).

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