Hydraulic cylinder body hole fine boring and rolling composite processing device and method thereof

Abstract

The application relates to the field of boring machining technology, in particular to a hydraulic oil cylinder body inner hole fine boring and rolling composite machining device and method, which comprises a base, a driving unit arranged on the base, a connecting shaft fixedly installed on the driving unit, a fixed disc fixedly connected to one end of the connecting shaft, an installation sleeve fixedly connected to one side of the fixed disc, a plurality of first sliding grooves arranged on the surface of the installation sleeve in the circumferential direction, first sliding blocks slidingly connected to the interiors of the first sliding grooves, and rolling heads rotatably connected to the sides of the first sliding blocks close to the exterior of the installation sleeve. The fine boring and rolling are designed in a composite mode, the integration of the inner hole machining is improved, and in the moving stage of the fine boring and rolling machining, boring residual chips are adsorbed and collected through the dust suction cylinder, the boring residual chips are prevented from affecting the rolling machining, and the machining effect of the cylinder body inner hole is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of boring technology, and in particular to a combined boring and rolling machining device and method for the inner hole of a hydraulic cylinder. Background Technology

[0002] Patent document CN213163119U discloses a composite boring head for deep hole turning and rolling of hydraulic support cylinders, including a cylindrical boring head body. The drilling end of the boring head body is provided with multiple chip removal grooves and multiple mounting grooves. Each mounting groove is equipped with a boring tool along the drilling direction of the boring head body. The cutting trajectory of the multiple boring tools completely covers the surface area of ​​the drilling end face of the boring head body. This composite boring head for deep hole turning and rolling of hydraulic support cylinders utilizes multiple boring tools arranged along the drilling direction of the boring head body.

[0003] In the existing technology, the inner hole of the cylinder body is precision bored by a boring head, and the inner wall of the boring hole is rolled by the ball bearings on the side of the boring head. When precision boring the inner hole of the cylinder body, a large amount of boring residue is generated in the boring hole. When precision boring and rolling are carried out at the same time, the ball bearings roll the boring residue onto the inner hole wall, which can easily cause pits and scratches on the inner hole wall, thus affecting the machining effect of the inner hole. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art by proposing a combined machining device and method for precision boring and rolling of the inner hole of a hydraulic cylinder.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a composite machining device for precision boring and rolling of the inner hole of a hydraulic cylinder, comprising a base, a drive unit provided on the base, a connecting shaft fixedly mounted on the drive unit, a fixed plate fixedly connected to one end of the connecting shaft, an mounting sleeve fixedly connected to one side of the fixed plate, a plurality of first sliding grooves being formed on the surface of the mounting sleeve along the circumferential direction, a first slider being slidably connected inside each of the first sliding grooves, and a rolling head being rotatably connected to the side of each first slider near the outside of the mounting sleeve;

[0006] A second groove is provided at the end of the mounting sleeve away from the fixed plate. A second slider is slidably connected inside the second groove. A mounting bracket is fixedly connected to the second slider. A boring head is fixedly installed inside the mounting bracket.

[0007] The mounting sleeve is equipped with a movable replacement component. When the movable replacement component drives the rolling head to move outward from the mounting sleeve, the boring head moves in the opposite direction towards the axis of the mounting sleeve.

[0008] A clamping fixture is fixedly installed on the base. The clamping end of the clamping fixture is coaxially arranged with the mounting sleeve. A lateral displacement component is provided on the drive unit. A dust collection tube is provided between the clamping fixture and the mounting sleeve. A negative pressure adsorption component and a clearance component are provided on the dust collection tube. When the drive unit moves towards the clamping fixture, the clearance component drives the dust collection tube to move downward to make way.

[0009] Preferably, the movable replacement component includes a first rotating ring and a second rotating ring, both of which are rotatably connected inside the mounting sleeve. The first rotating ring has multiple first guide grooves along its circumference, and multiple first sliders are fixedly connected to first circular pins, each located inside a corresponding first guide groove. The second rotating ring has a second guide groove, and a second circular pin is fixedly connected to a second slider, located inside a second guide groove. The first and second guide grooves have opposite guiding directions. A linkage ring is fixedly connected between the first and second rotating rings, and a rotation positioning component is provided between the fixed plate and the first rotating ring.

[0010] Preferably, the rotary positioning assembly includes two sector-shaped slots, which are circumferentially formed on the fixed plate. Sector-shaped blocks are slidably connected inside each sector-shaped slot. Rectangular slots are formed inside each sector-shaped block. Two movable strips are slidably connected inside each rectangular slot. A smooth rod is fixedly connected inside each rectangular slot. The two movable strips are slidably inserted into the smooth rod. A spring is sleeved on the smooth rod and fixedly connected between the corresponding two movable strips. Two sets of positioning holes are formed inside each sector-shaped slot. There are two positioning holes in each set. Positioning rods are fixedly connected to the opposite sides of the two corresponding movable strips. One end of each positioning rod passes through the sector-shaped block and extends to the outside of the sector-shaped block before being inserted into the two positioning holes in the same set. A fixed ring is fixedly connected to the side of the first rotating ring away from the second rotating ring. The two sector-shaped blocks are fixedly connected to the fixed ring.

[0011] A rotating bracket is fixedly installed on the base, and a drive ring is rotatably connected to the rotating bracket. The drive ring is sleeved on the connecting shaft. Two rectangular collars are fixedly connected circumferentially on the side of the drive ring near the fixed plate. The two rectangular collars are arranged opposite to the two rectangular grooves. A guide slope is opened on the end of the movable bar near the drive ring. A drive component is provided on the drive ring.

[0012] Preferably, the drive assembly includes an external gear ring, which is fixedly connected to the drive ring. A first servo motor is fixedly mounted on the rotating bracket, and a gear is fixedly connected to the output shaft of the first servo motor, which meshes with the external gear ring.

[0013] Preferably, the lateral displacement assembly includes a sliding bracket, which is slidably connected to the top of the base. A drive unit is fixedly mounted on the sliding bracket, and an electric cylinder is fixedly mounted on the base. The drive shaft of the electric cylinder is fixedly connected to the sliding bracket.

[0014] Preferably, the clearance component includes two guide plates, which are respectively disposed on both sides of the drive unit. Each guide plate is fixedly connected to a sliding sleeve, and a sliding strip is slidably connected inside the sliding sleeve. The sliding strip is fixedly connected to the base. Two fixing rods are fixedly connected to the dust collection cylinder, and one end of the fixing rod is fixedly connected to the corresponding guide plate. A third guide groove is provided on the guide plate, which includes a horizontal section and an inclined section. Mounting rods are fixedly connected to both sides of the sliding bracket, and a third circular pin is fixedly connected to the mounting rod. One end of the third circular pin is located inside the corresponding inclined section.

[0015] Preferably, the negative pressure adsorption assembly includes an annular shell, which is fixedly connected to the side of the vacuum cleaner away from the clamping fixture. Multiple adsorption grooves are provided on the circumferential side of the vacuum cleaner, and all of the multiple adsorption grooves are connected to the inside of the annular shell. A vacuum cleaner is fixedly installed on the base, and a flexible hose is fixedly connected between the vacuum cleaner and the annular shell.

[0016] Preferably, a rotating shaft is rotatably connected inside the vacuum cleaner, a connecting roller is slidably inserted on the rotating shaft, a limiting strip is fixedly connected to the surface of the rotating shaft, a strip groove is opened inside the connecting roller, the limiting strip is located inside the strip groove, multiple adsorption grooves are located between the connecting roller and the inner wall of the vacuum cleaner, a second servo motor is fixedly installed on the vacuum cleaner, the output shaft of the second servo motor is fixedly connected to the rotating shaft, an inclined annular groove is opened on the inner wall of the vacuum cleaner, an arc-shaped pin is fixedly connected to the connecting roller, the arc end of the arc-shaped pin is located in the inclined annular groove, and a cleaning brush is fixedly connected to the surface of the connecting roller.

[0017] Preferably, the cleaning brushes are arranged in a spiral pattern on the surface of the connecting roller.

[0018] A machining method for a combined precision boring and roll forming device for the inner bore of a hydraulic cylinder, the method comprising the following steps:

[0019] Step 1: The hydraulic cylinder body is clamped and positioned using a clamping fixture. The drive unit moves towards the clamping fixture using the action of the lateral displacement component. During the lateral displacement, the drive unit drives the connecting shaft to rotate in one direction, so that the fixed plate and the mounting sleeve rotate synchronously.

[0020] Step 2: Install the sleeve to drive the boring head to rotate at high speed. The boring head performs fine boring on the inner hole of the cylinder. After the fine boring is completed, the drive unit returns to the initial position through the action of the lateral displacement component. At the same time, the dust collection tube moves upward and returns to the initial position, and the boring residue in the inner hole of the cylinder is adsorbed and collected through the action of the negative pressure adsorption component.

[0021] Step 3: The boring head is driven to move towards the axis of the mounting sleeve by the action of the moving replacement component, while the rolling head moves outward from the mounting sleeve. Then, the drive unit moves towards the clamping fixture by the action of the lateral displacement component. The dust suction tube absorbs and collects the boring chips and continues to move downward to make room. Multiple rolling heads move to the outside of the mounting sleeve and rotate synchronously with the mounting sleeve to roll the inner hole after precision boring.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. This invention performs two-stage machining of the cylinder inner bore by installing a sleeve. During the two machining processes, the boring head extends while the rolling head retracts, and vice versa. This composite design of precision boring and rolling improves the integration of inner bore machining. Furthermore, during the moving phase of precision boring and rolling, a dust extraction tube is used to collect boring debris, preventing it from affecting the rolling process and ensuring the machining effect of the cylinder inner bore.

[0024] 2. The first rotating ring and the second rotating ring are fixedly connected by the linkage ring, so that the second rotating ring rotates synchronously with the first rotating ring. The second circular pin inside is guided and limited by the second guide groove. The second circular pin drives the second slider to move inside the second slide groove. The first guide groove and the second guide groove have opposite guiding directions, so that the mounting bracket and the boring head move in opposite directions and retract, thereby making the boring head and the rolling head move in opposite directions.

[0025] 3. When the drive unit drives the fixed plate to continue moving towards the clamping fixture, the rectangular collar disengages from the corresponding rectangular groove, the movable bar loses the squeezing limit of the rectangular collar, and the elastic extension of the spring squeezes the two corresponding movable bars away from each other, so that one end of the two corresponding positioning rods is inserted into another set of positioning holes to continue positioning, ensuring that the boring head and the rolling head can be positioned in the current state after moving in opposite directions. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the first structure of the present invention;

[0027] Figure 2 For the present invention Figure 1 Enlarged schematic diagram of the structure at point A in the diagram;

[0028] Figure 3 This is a schematic diagram of the second structure of the present invention;

[0029] Figure 4 For the present invention Figure 3 Enlarged schematic diagram of the structure at point B in the diagram;

[0030] Figure 5This is a cross-sectional schematic diagram of the mating structure of the drive unit, connecting shaft, fixing disk, and mounting sleeve of the present invention.

[0031] Figure 6 For the present invention Figure 5 Enlarged schematic diagram of the structure at point C;

[0032] Figure 7 For the present invention Figure 6 Enlarged schematic diagram of the structure at point D;

[0033] Figure 8 This is a schematic diagram of the mating structure of the fixing disc and the mounting sleeve of the present invention;

[0034] Figure 9 For the present invention Figure 8 Enlarged schematic diagram of the structure at point E in the diagram;

[0035] Figure 10 This is a schematic diagram of the assembly structure of the vacuum cleaner cylinder, vacuum cleaner and hose of the present invention (the vacuum cleaner cylinder has been cut out).

[0036] Figure 11 This is a schematic diagram of the dust collection cylinder structure of the present invention;

[0037] Figure 12 This is a schematic diagram of the mating structure of the first rotating ring, the second rotating ring, and the linkage ring of the present invention.

[0038] In the diagram: 1. Base; 2. Drive unit; 3. Connecting shaft; 4. Fixed plate; 5. Mounting sleeve; 6. First slide groove; 7. First slider; 8. Roller head; 9. Second slide groove; 10. Second slider; 11. Mounting bracket; 12. Boring head; 13. Clamping fixture; 14. Dust collection tube; 15. First rotating ring; 16. Second rotating ring; 17. First guide groove; 18. First circular pin; 19. Second guide groove; 20. Second circular pin; 21. Linkage ring; 22. Sector groove; 23. Sector block; 24. Rectangular groove; 25. Movable bar; 26. Smooth rod; 27. Spring; 28. Positioning rod; 29. ​​Rotating bracket; 30. Drive. 31. Rectangular collar; 32. External toothed ring; 33. First servo motor; 34. Gear; 35. Sliding bracket; 36. Electric cylinder; 37. Guide plate; 38. Sliding sleeve; 39. Sliding strip; 40. Fixed rod; 41. Third guide groove; 4101. Horizontal section; 4102. Inclined section; 42. Mounting rod; 43. Third circular pin; 44. Annular housing; 45. Adsorption groove; 46. Vacuum cleaner; 47. Hose; 48. Rotating shaft; 49. Connecting roller; 50. Limiting strip; 51. Strip groove; 52. Second servo motor; 53. Inclined annular groove; 54. Arc pin; 55. Cleaning brush; 56. Fixed ring; 57. Positioning hole. Detailed Implementation

[0039] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0040] like Figures 1 to 12 The device for precision boring and rolling of the inner hole of a hydraulic cylinder shown includes a base 1, a drive unit 2 on the base 1, a connecting shaft 3 fixedly mounted on the drive unit 2, a fixed plate 4 fixedly connected to one end of the connecting shaft 3, an mounting sleeve 5 fixedly connected to one side of the fixed plate 4, a plurality of first sliding grooves 6 are formed on the surface of the mounting sleeve 5 along the circumferential direction, a first slider 7 is slidably connected inside the first sliding groove 6, and a rolling head 8 is rotatably connected to the side of the first slider 7 near the outside of the mounting sleeve 5.

[0041] The end of the mounting sleeve 5 away from the fixed plate 4 has a second groove 9 (e.g., ...). Figure 6 As shown), a second slider 10 is slidably connected inside the second slide groove 9, and a mounting bracket 11 is fixedly connected to the second slider 10. A boring head 12 is fixedly installed inside the mounting bracket 11.

[0042] The mounting sleeve 5 is equipped with a movable replacement component. When the movable replacement component drives the rolling head 8 to move outward from the mounting sleeve 5, the boring head 12 moves in the opposite direction to the axis of the mounting sleeve 5.

[0043] A clamping fixture 13 is fixedly installed on the base 1. The clamping end of the clamping fixture 13 is coaxially arranged with the mounting sleeve 5. A lateral displacement component is provided on the drive unit 2. A dust collection tube 14 is provided between the clamping fixture 13 and the mounting sleeve 5. A negative pressure adsorption component and a clearance component are provided on the dust collection tube 14. When the drive unit 2 moves towards the clamping fixture 13, the clearance component drives the dust collection tube 14 to move downward to make way.

[0044] The hydraulic cylinder body is clamped and positioned by the clamping fixture 13. The opening end of the dust collection tube 14 is aligned with the inner hole of the cylinder and is coaxially arranged. The drive unit 2 moves towards the clamping fixture 13 through the action of the lateral displacement component. During the lateral displacement, the drive unit 2 drives the connecting shaft 3 to rotate in one direction, so that the fixed plate 4 and the mounting sleeve 5 rotate synchronously. When the drive unit 2 moves laterally, the dust collection tube 14 moves downward to make way through the action of the clearance component.

[0045] As the drive unit 2 moves into the inner hole of the hydraulic cylinder, the mounting sleeve 5 rotates, driving the boring head 12 to rotate at high speed. At this time, the boring end of the boring head 12 is located outside one end of the mounting sleeve 5 and is in an extended state, while the multiple rolling heads 8 are located inside the corresponding first grooves 6 and are in a retracted state. The boring head 12 rotates synchronously with the mounting sleeve 5 and moves into the inner hole of the cylinder, thereby performing fine boring on the inner hole of the cylinder. After the fine boring is completed, the drive unit 2 returns to the initial position through the action of the lateral displacement component. At the same time, the dust collection cylinder 14 moves upward and returns to the initial position, and the boring residue in the inner hole of the cylinder is adsorbed and collected through the action of the negative pressure adsorption component.

[0046] The boring head 12 is driven to move towards the axis of the mounting sleeve 5 by the action of the moving replacement component, while the rolling head 8 moves to the outside of the mounting sleeve 5. Then, the driving unit 2 moves towards the clamping fixture 13 by the action of the lateral displacement component. The dust suction tube 14 absorbs and collects the boring chips and then continues to move downward to make room. After the boring head 12 moves, it no longer contacts the inner hole of the cylinder. The multiple rolling heads 8 move to the outside of the mounting sleeve 5 and rotate synchronously with the mounting sleeve 5 to roll the inner hole after precision boring, thereby continuing to roll the inner hole after precision boring and improving the smoothness of the inner hole.

[0047] This invention performs two-stage machining of the cylinder inner bore by installing a sleeve 5. During the two machining processes, the boring head 12 extends while the rolling head 8 retracts, and the rolling head 8 extends while the boring head 12 retracts. This allows for a composite design of precision boring and rolling, improving the integration of inner bore machining. Furthermore, during the moving phase of precision boring and rolling, the dust collection tube 14 adsorbs and collects the boring residue, preventing it from affecting the rolling process and ensuring the machining effect of the cylinder inner bore.

[0048] As a further embodiment of the present invention, the movable replacement component includes a first rotating ring 15 and a second rotating ring 16 (e.g. Figure 6 As shown), the first rotating ring 15 and the second rotating ring 16 are both rotatably connected inside the mounting sleeve 5. The first rotating ring 15 has multiple first guide grooves 17 circumferentially formed. Multiple first sliders 7 are fixedly connected to a first circular pin 18, and the multiple first circular pins 18 are located inside the corresponding first guide grooves 17. The second rotating ring 16 has a second guide groove 19 formed. The second slider 10 is fixedly connected to a second circular pin 20, and the second circular pin 20 is located inside the second guide groove 19. The guiding directions of the first guide groove 17 and the second guide groove 19 are opposite. A linkage ring 21 is fixedly connected between the first rotating ring 15 and the second rotating ring 16. A rotation positioning assembly is provided between the fixed disk 4 and the first rotating ring 15.

[0049] The first rotating ring 15 is driven to rotate by a rotary positioning component. When the first rotating ring 15 rotates, multiple first guide grooves 17 guide and limit the first circular pin 18 inside, so that the first circular pin 18 drives the corresponding first slider 7 to move inside the first slide groove 6, and the rolling head 8 moves to the outside of the mounting sleeve 5. The first rotating ring 15 and the second rotating ring 16 are fixedly connected by a linkage ring 21, so that the second rotating ring 16 rotates synchronously with the first rotating ring 15. The second circular pin 20 inside is guided and limited by a second guide groove 19. The second circular pin 20 drives the second slider 10 to move inside the second slide groove 9. The guiding directions of the first guide groove 17 and the second guide groove 19 are opposite, so that the mounting bracket 11 and the boring head 12 move in opposite directions and retract, so that the boring head 12 and the rolling head 8 move in opposite directions.

[0050] As a further embodiment of the present invention, the rotary positioning assembly includes two sector-shaped grooves 22, which are circumferentially formed on the fixed plate 4. Sector-shaped blocks 23 are slidably connected inside each sector-shaped groove 22. Rectangular grooves 24 are formed inside each sector-shaped block 23. Two movable strips 25 are slidably connected inside each rectangular groove 24. A guide rod 26 is fixedly connected inside each rectangular groove 24. The two movable strips 25 are slidably inserted into the guide rod 26. A spring 27 is sleeved on the guide rod 26 and fixedly connected between the corresponding two movable strips 25. Two sets of positioning holes 57 (e.g., ...) are formed inside the sector-shaped grooves 22. Figure 7 As shown), each group of positioning holes 57 has two holes. Positioning rods 28 are fixedly connected to the opposite sides of the two corresponding movable strips 25. One end of each positioning rod 28 passes through the sector block 23 and extends to the outside of the sector block 23 before being inserted into the two positioning holes 57 in the same group. A fixing ring 56 (as shown) is fixedly connected to the side of the first rotating ring 15 away from the second rotating ring 16. Figure 6 and Figure 7 As shown), both sector blocks 23 are fixedly connected to the fixing ring 56;

[0051] A rotating bracket 29 is fixedly installed on the base 1. A drive ring 30 is rotatably connected to the rotating bracket 29. The drive ring 30 is sleeved on the connecting shaft 3. Two rectangular collars 31 are fixedly connected circumferentially on the side of the drive ring 30 near the fixed plate 4. The two rectangular collars 31 are arranged opposite to the two rectangular grooves 24. A guide slope is opened on the end of the movable bar 25 near the drive ring 30. A drive assembly is provided on the drive ring 30.

[0052] After precision boring, the drive unit 2 returns to its initial position via the action of the lateral displacement component. The fixed disk 4 moves synchronously with the drive unit 2 and moves towards the drive ring 30. As the fixed disk 4 approaches the drive ring 30, the two rectangular collars 31 are respectively inserted into the corresponding rectangular slots 24. Through the contact and compression between the guide slope at one end of the movable bar 25 and the inside of the rectangular collar 31, the two movable bars 25 move closer to each other along the sliding joint of the smooth rod 26, compressing the spring 27 and causing compression deformation. When the two movable bars 25 move closer to each other, they drive the positioning rod 28 to move synchronously, causing one end of the positioning rod 28 to move out of the corresponding positioning hole 57 and release the positioning of the sector block 23 inside the sector slot 22. The drive ring 30 rotates at a fixed angle through the action of the drive component, causing the sector block 23 to move in the sector groove 22. The fixed ring 56 drives the first rotating ring 15 to rotate, thereby causing the boring head 12 and the rolling head 8 to move in opposite directions. When the drive unit 2 drives the fixed plate 4 to continue moving towards the clamping fixture 13, the rectangular collar 31 disengages from the corresponding rectangular groove 24, and the movable bar 25 loses the compression limit of the rectangular collar 31. The elastic extension of the spring 27 compresses the two corresponding movable bars 25 away from each other, so that one end of the two corresponding positioning rods 28 is inserted into another set of positioning holes 57 to continue positioning, ensuring that the boring head 12 and the rolling head 8 can be positioned in the current state after moving in opposite directions.

[0053] As a further embodiment of the present invention, the drive assembly includes an external gear ring 32, which is fixedly connected to the drive ring 30. A first servo motor 33 is fixedly mounted on the rotating bracket 29. A gear 34 is fixedly connected to the output shaft of the first servo motor 33, and the gear 34 meshes with the external gear ring 32.

[0054] The output shaft of the first servo motor 33 drives the gear 34 to rotate, and through the meshing between the gear 34 and the external gear ring 32, the external gear ring 32 drives the drive ring 30 to rotate, thereby driving the drive ring 30 to rotate.

[0055] As a further embodiment of the present invention, the lateral displacement component includes a sliding bracket 35, which is slidably connected to the top of the base 1. The drive unit 2 is fixedly installed on the sliding bracket 35, and an electric cylinder 36 is fixedly installed on the base 1. The transmission shaft of the electric cylinder 36 is fixedly connected to the sliding bracket 35.

[0056] When the drive shaft of the electric cylinder 36 moves outward, it drives the sliding bracket 35 to move through, causing the drive unit 2 to move towards the clamping fixture 13. When the drive shaft of the electric cylinder 36 moves inward, the drive unit 2 moves away from the clamping fixture 13.

[0057] As a further embodiment of the present invention, the clearance component includes two guide plates 37, which are respectively disposed on both sides of the drive unit 2. Each guide plate 37 is fixedly connected to a sliding sleeve 38, and a sliding strip 39 is slidably connected inside the sliding sleeve 38. The sliding strips 39 are all fixedly connected to the base 1. Two fixing rods 40 are fixedly connected to the vacuum cleaner 14, with one end of each fixing rod 40 fixedly connected to a corresponding guide plate 37. A third guide groove 41 (e.g., ...) is provided on the guide plate 37. Figure 4 As shown), the third guide groove 41 includes a horizontal section 4101 and an inclined section 4102. Both sides of the sliding bracket 35 are fixedly connected to the mounting rod 42. A third circular pin 43 is fixedly connected to the mounting rod 42. One end of the third circular pin 43 is located inside the corresponding inclined section 4102.

[0058] When the sliding bracket 35 drives the drive unit 2 to move towards the clamping fixture 13, the mounting rods 42 on both sides move synchronously with the sliding bracket 35. The third circular pin 43 on the mounting rod 42 moves inside the inclined section 4102. Since the vertical height of the third circular pin 43 remains unchanged, the sliding sleeve 38 on the guide plate 37 slides downward along the surface of the sliding strip 39, thereby causing the guide plate 37 to move downward and drive the dust collection cylinder 14 to move downward to make room. When the mounting sleeve 5 and the connecting shaft 3 are close to the dust collection cylinder 14, the dust collection cylinder 14 moves downward to make room, ensuring that the mounting sleeve 5 can smoothly enter the inner hole of the cylinder. After the dust collection cylinder 14 moves to make room, the third circular pin 43 moves from inside the inclined section 4102 to the horizontal section 4101 and continues to move along the horizontal section 4101. The dust collection cylinder 14 remains at the same height after making room.

[0059] As a further embodiment of the present invention, the negative pressure adsorption assembly includes an annular housing 44, which is fixedly connected to the side of the vacuum cleaner 14 away from the clamping fixture 13. The vacuum cleaner 14 has a plurality of adsorption grooves 45 (e.g., ...) circumferentially formed on its surface. Figure 10 and Figure 11 As shown), multiple adsorption tanks 45 are connected to the inside of the annular shell 44. A vacuum cleaner 46 is fixedly installed on the base 1, and a hose 47 is fixedly connected between the vacuum cleaner 46 and the annular shell 44.

[0060] The vacuum cleaner 46 creates negative pressure in the vacuum cylinder 14, which draws the boring debris from the inner bore of the cylinder into the vacuum cylinder 14 through the opening. The debris then enters the annular housing 44 through multiple suction grooves 45 and finally enters the vacuum cleaner 46 through the hose 47 for collection.

[0061] As a further embodiment of the present invention, a rotating shaft 48 is rotatably connected inside the dust collection cylinder 14, a connecting roller 49 is slidably inserted on the rotating shaft 48, a limiting strip 50 is fixedly connected to the surface of the rotating shaft 48, a strip groove 51 is formed inside the connecting roller 49, the limiting strip 50 is located inside the strip groove 51, a plurality of adsorption grooves 45 are located between the connecting roller 49 and the inner wall of the dust collection cylinder 14, a second servo motor 52 is fixedly mounted on the dust collection cylinder 14, the output shaft of the second servo motor 52 is fixedly connected to the rotating shaft 48, and a sloping annular groove 53 (e.g., ...) is formed on the inner wall of the dust collection cylinder 14. Figure 10 and Figure 11 As shown), an arc-shaped pin 54 is fixedly connected to the connecting roller 49. The arc end of the arc-shaped pin 54 is located in the inclined annular groove 53. A cleaning brush 55 is fixedly connected to the surface of the connecting roller 49.

[0062] When the vacuum cleaner 14 uses negative pressure to adsorb boring debris in the inner hole of the cylinder, some of the boring debris is difficult to detach from the inner hole of the cylinder due to electrostatic adsorption and mutual agglomeration. The output shaft of the second servo motor 52 drives the rotating shaft 48 to rotate in one direction. The limiting strip 50 limits the strip groove 51, causing the connecting roller 49 to rotate with the rotating shaft 48. During the rotation of the connecting roller 49, the arc pin 54 rotates synchronously with the connecting roller 49. The inclined annular groove 53 guides and limits the arc end of the arc pin 54, causing the connecting roller 49 to rotate in one direction. 9. As the rotating shaft 48 rotates, it moves back and forth along the surface of the rotating shaft 48, thereby causing the connecting roller 49 to move back and forth into the inner hole of the cylinder continuously. The cleaning brush 55 on the surface of the connecting roller 49 rotates and brushes the inner hole of the cylinder, improving the cleaning effect of the inner hole of the cylinder and preventing boring residue from remaining in the inner hole of the cylinder. After the second servo motor 52 drives the rotating shaft 48 to rotate, the arc end of the arc pin 54 is located in the initial position inside the inclined annular groove 53, ensuring that the connecting roller 49 is completely disengaged from the inner hole of the cylinder and located inside the dust collection cylinder 14.

[0063] As a further embodiment of the present invention, the cleaning brush 55 is spirally distributed on the surface of the connecting roller 49;

[0064] When the connecting roller 49 moves back and forth into the inner hole of the cylinder and rotates to brush, the spirally distributed cleaning brushes 55 rotate synchronously with the connecting roller 49 and spirally guide the boring residue in the inner hole of the cylinder, so as to guide the boring residue into the dust collection cylinder 14.

[0065] A machining method for a combined precision boring and roll forming device for the inner bore of a hydraulic cylinder, the method comprising the following steps:

[0066] Step 1: The hydraulic cylinder body is clamped and positioned by the clamping fixture 13. The drive unit 2 moves towards the clamping fixture 13 by the action of the lateral displacement component. During the lateral displacement, the drive unit 2 drives the connecting shaft 3 to rotate in one direction, so that the fixed plate 4 and the mounting sleeve 5 rotate synchronously.

[0067] Step 2: Install sleeve 5 to drive boring head 12 to rotate at high speed. The boring head 12 performs fine boring on the inner hole of the cylinder. After fine boring, the drive unit 2 returns to the initial position through the action of the lateral displacement component. At the same time, the dust collection tube 14 moves upward and returns to the initial position, and the boring residue in the inner hole of the cylinder is adsorbed and collected through the action of the negative pressure adsorption component.

[0068] Step 3: The boring head 12 is driven to move towards the axis of the mounting sleeve 5 by the action of the moving replacement component, while the rolling head 8 moves to the outside of the mounting sleeve 5. Then, the driving unit 2 moves towards the clamping fixture 13 by the action of the transverse displacement component. The dust suction tube 14 absorbs and collects the boring chips and then continues to move downward to make room. The multiple rolling heads 8 move to the outside of the mounting sleeve 5 and rotate synchronously with the mounting sleeve 5 to roll the inner hole after precision boring.

[0069] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A hydraulic cylinder body hole fine boring and rolling composite processing device, comprising a base, characterized in that, The base is provided with a driving unit, a connecting shaft is fixedly installed on the driving unit, a fixed disc is fixedly connected to one end of the connecting shaft, an installation sleeve is fixedly connected to one side of the fixed disc, a plurality of first sliding grooves are formed on the surface of the installation sleeve in the circumferential direction, first sliding blocks are slidably connected in the first sliding grooves, and rolling heads are rotatably connected to the side, close to the outside of the installation sleeve, of the first sliding blocks. A second sliding groove is formed at the end of the installation sleeve away from the fixed disc, a second sliding block is slidably connected in the second sliding groove, an installation frame is fixedly connected to the second sliding block, and a boring tool head is fixedly installed in the installation frame. The installation sleeve is provided with a moving replacement assembly, when the moving replacement assembly drives the rolling head to move outwardly from the installation sleeve, the boring tool head moves reversely to the center of the installation sleeve. The base is fixedly provided with a clamping tool, the clamping end of the clamping tool is coaxially arranged with the installation sleeve, the driving unit is provided with a transverse displacement assembly, a dust collection cylinder is arranged between the clamping tool and the installation sleeve, a negative pressure adsorption assembly and a yielding assembly are arranged on the dust collection cylinder, and when the driving unit moves towards the clamping tool, the yielding assembly drives the dust collection cylinder to move downwardly and yield. The moving replacement assembly comprises a first rotating ring and a second rotating ring, the first rotating ring and the second rotating ring are rotatably connected in the installation sleeve, a plurality of first guide grooves are formed on the first rotating ring in the circumferential direction, a plurality of first circular pins are fixedly connected to the plurality of first sliding blocks, the plurality of first circular pins are located in the corresponding first guide grooves, a second guide groove is formed on the second rotating ring, a second circular pin is fixedly connected to the second sliding block, the second circular pin is located in the second guide groove, the guide directions of the first guide grooves and the second guide groove are opposite, a linkage ring is fixedly connected between the first rotating ring and the second rotating ring, and a rotary positioning assembly is arranged between the fixed disc and the first rotating ring. The rotary positioning assembly comprises two sector grooves, the two sector grooves are formed on the fixed disc in the circumferential direction, sector blocks are slidably connected in the sector grooves, a rectangular groove is formed in the sector block, two movable bars are slidably connected in the rectangular groove, a light rod is fixedly connected in the rectangular groove, the two movable bars are slidably inserted on the light rod, a spring is sleeved on the light rod, the spring is fixedly connected between the corresponding two movable bars, two groups of positioning holes are formed in the sector groove, the number of each group of positioning holes is two, the sides, away from each other, of the corresponding two movable bars are fixedly connected with positioning rods, one end of the two positioning rods penetrates through the sector block and extends to the outside of the sector block and is then inserted in the two positioning holes of the same group, the side, away from the second rotating ring, of the first rotating ring is fixedly connected with a fixed ring, and the two sector blocks are fixedly connected on the fixed ring. The base is fixedly provided with a rotating support, a driving ring is rotatably connected on the rotating support, the driving ring is sleeved on the connecting shaft, two rectangular sleeve rings are fixedly connected on the side, close to the fixed disc, of the driving ring in the circumferential direction, the two rectangular sleeve rings are oppositely arranged with the two rectangular grooves, the ends, close to the driving ring, of the movable bars are formed with guide inclined surfaces, and the driving ring is provided with a driving assembly.

2. The hydraulic cylinder body hole fine boring and rolling composite processing device according to claim 1, characterized in that, The driving assembly comprises an outer tooth ring fixedly connected to the driving ring, a first servo motor fixedly installed on the rotating support, and a gear fixedly connected to the output shaft of the first servo motor and engaged with the outer tooth ring.

3. The hydraulic cylinder bore finishing and rolling device according to claim 1, characterized in that, The lateral displacement assembly comprises a sliding support slidably connected to the top of the base, a driving unit fixedly installed on the sliding support, and an electric cylinder fixedly installed on the base and having a transmission shaft fixedly connected to the sliding support.

4. The hydraulic cylinder body hole fine boring and rolling composite processing device according to claim 3, characterized in that, The yielding assembly comprises two guide plates arranged on the two sides of the driving unit, a sliding sleeve fixedly connected to each guide plate, a sliding bar slidably connected to the interior of each sliding sleeve, and a fixed rod fixedly connected to the dust collection cylinder and having one end fixedly connected to the corresponding guide plate.

5. The hydraulic cylinder bore finishing and rolling device according to claim 1, characterized in that, The negative pressure adsorption assembly comprises an annular shell fixedly connected to the side of the dust collection cylinder away from the clamping tool, a plurality of adsorption grooves circumferentially formed in the dust collection cylinder and in communication with the interior of the annular shell, a dust collector fixedly installed on the base and in fixed communication with the annular shell via a hose.

6. The hydraulic cylinder bore finishing and rolling device according to claim 5, characterized in that, The interior of the dust collection cylinder is rotatably connected to a rotating shaft, the rotating shaft is slidably inserted with a connecting roller, the surface of the rotating shaft is fixedly connected to a limiting strip, the interior of the connecting roller is formed with a strip-shaped groove, the limiting strip is located in the strip-shaped groove, the plurality of adsorption grooves are located between the connecting roller and the inner wall of the dust collection cylinder, the dust collection cylinder is fixedly installed with a second servo motor, the output shaft of the second servo motor is fixedly connected to the rotating shaft, the inner wall of the dust collection cylinder is formed with a beveled ring groove, the connecting roller is fixedly connected with an arc surface pin, the arc surface end of the arc surface pin is located in the beveled ring groove, and the surface of the connecting roller is fixedly connected with a cleaning brush.

7. The hydraulic cylinder bore finishing and rolling device according to claim 6, characterized in that, The cleaning brush is distributed in a spiral shape on the surface of the connecting roller.

8. The processing method of the hydraulic cylinder body inner hole fine boring and rolling composite processing device is suitable for the hydraulic cylinder body inner hole fine boring and rolling composite processing device in any one of claims 1-7, characterized in that, The method comprises the following steps: Step one: the hydraulic cylinder body is clamped and positioned by the clamping tool, the driving unit is moved towards the clamping tool by the action of the lateral displacement assembly, and the fixed disc and the mounting sleeve are synchronously rotated by the one-way rotation of the driving connection shaft during the lateral displacement of the driving unit; Step two: the mounting sleeve drives the boring cutter head to rotate at high speed, the boring cutter head precisely bores the inner hole of the cylinder body, after the precise boring is completed, the driving unit returns to the initial position by the action of the lateral displacement assembly, the dust collection cylinder moves upwards and returns to the initial position, and the boring residual chips in the inner hole of the cylinder body are adsorbed and collected by the action of the negative pressure adsorption assembly; Step three: the boring cutter head is driven to move towards the axis of the mounting sleeve by the action of the moving replacement assembly, the rolling heads move towards the outside of the mounting sleeve, then the driving unit is moved towards the clamping tool by the action of the lateral displacement assembly, the dust collection cylinder continues to move downwards to yield after adsorbing and collecting the boring residual chips, and the plurality of rolling heads move to the outside of the mounting sleeve and synchronously rotate with the mounting sleeve to roll the precisely bored inner hole.

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