Shock absorption boring rod for deep hole machining of hydraulic oil cylinder body and vibration suppression method

Abstract

The invention discloses a damping boring rod for deep hole machining of a hydraulic oil cylinder body and a vibration suppression method. The damping boring rod comprises a rod body, a damping assembly is installed on the rod body and comprises an arc plate connected to the rod body in a nailing mode, a sleeve is fixed to the top of the arc plate, a telescopic rod is installed at the top of the sleeve, and a ball is installed at the top of the telescopic rod; a circular plate is installed on the inner wall of the sleeve, a lead screw in threaded connection with the bottom of the telescopic rod is installed in the center of the circular plate and penetrates through the bottom of the circular plate to be connected with a first bevel gear, the first bevel gear is meshed with a second bevel gear, and the second bevel gear is fixed to the transverse rod; the transverse rod is rotationally installed on the sleeve, penetrates through one end of the sleeve, extends into the shell cover and is in butt joint with the one-way locking assembly. By arranging the damping assembly and the one-way locking assembly, rapid adjustment can be conducted, the telescopic rod is automatically locked under vibration or external force interference, supporting displacement is prevented, it is ensured that rigid supporting of the ball is constant, machining chatter is restrained, and deep hole machining stability and precision are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic machinery, and more specifically, to a shock-absorbing boring bar for deep-hole machining of a hydraulic cylinder block and a vibration suppression method. Background Art

[0002] A shock-absorbing boring bar is a special boring bar used for deep-hole machining (such as hydraulic cylinder blocks, gun barrels, oil drill pipes, etc.). Its core function is to suppress cutting vibration and improve machining accuracy and surface quality. Compared with traditional rigid boring bars, shock-absorbing boring bars can effectively reduce vibration during machining through special structural designs or additional damping devices, thereby reducing vibration marks, tool wear, and machining errors.

[0003] Existing shock-absorbing boring bars usually adopt solid tool bars to increase the stiffness of the boring bar body, thereby reducing chatter during cutting. For example, patent CN214349689U discloses a shock-absorbing boring bar for deep-hole machining, and also reduces the radial chatter of the boring tool during cutting by configuring a shock absorber opposite to the cutting blade. However, it is very laborious to tighten the bolts during specific operations, and it is necessary to tighten them forcefully during adjustment. Moreover, the compression type design is very inconvenient to release and cannot provide a reliable support and shock-absorbing foundation for the shock-absorbing boring bar.

[0004] In view of this, research and improvement are carried out on the existing structures and deficiencies, and a shock-absorbing boring bar for deep-hole machining of a hydraulic cylinder block and a vibration suppression method using the shock-absorbing boring bar are proposed. Summary of the Invention

[0005] Aiming at the above problems, an object of the present invention is to provide a shock-absorbing boring bar for deep-hole machining of a hydraulic cylinder block and a vibration suppression method.

[0006] To achieve the above object, one of the technical solutions adopted by the present invention is as follows: A shock-absorbing boring bar for deep-hole machining of a hydraulic cylinder block, including a bar body, with a cutting blade and a mounting block respectively installed at both ends of the bar body. A shock-absorbing component is installed on the bar body. The shock-absorbing component includes an arc plate nailed to the bar body. A sleeve is fixed at the top of the arc plate. A telescopic rod is slidably installed at the top of the sleeve. The telescopic rod slides in corresponding chutes in the sleeve through protruding strips provided on both sides. A resilient ball bead is installed at the top of the telescopic rod. A circular plate is installed on the inner wall of the sleeve. A lead screw is rotatably installed at the center of the circular plate. The top of the lead screw is threadedly connected to the bottom of the telescopic rod. The lead screw penetrates through the bottom of the circular plate and is connected to a first bevel gear. The first bevel gear meshes with a second bevel gear. The second bevel gear is fixed on a cross bar. The cross bar is rotatably installed on the sleeve. One end of the cross bar passing through the sleeve is provided with a turning handle. The other end of the cross bar passing through the sleeve extends into the interior of a housing cover and is connected to a one-way locking component. The housing cover is fixed on one side of the sleeve. The one-way locking component is used for limiting the one-way rotation of the cross bar.

[0007] Preferably, the one-way locking assembly includes a rotating column, two symmetric convex plates are arranged inside the rotating column, the cross bar passes through the center of the rotating column, and notches corresponding to the positions of the convex plates are formed on the cross bar. The convex plates are stuck in the notches of the cross bar and can slide back and forth. The cooperation between the convex plates and the notches enables the cross bar and the rotating column to rotate synchronously.

[0008] Preferably, grooves are arranged on both sides of the rotating column, a clamping plate is rotatably installed in the grooves, and a positioning spring is connected between the other end of the clamping plate and the grooves; an annular block is arranged outside the rotating column, and both sides of the annular block are connected to the inner wall of the housing cover through support rods; a densely distributed annular channel is arranged on the inner wall of the annular block, the notch of the annular channel is designed as an inclined surface, and the clamping plate is stuck in the notch of the annular channel.

[0009] Preferably, a stop block is fixed on the cross bar, the stop block fits against one side of the rotating column, a round plate is fixed on the other side of the cross bar passing through the center of the rotating column, and a return spring is connected between the round plate and the rotating column.

[0010] Preferably, four support columns are evenly fixed on one side of the rotating column away from the stop block, steel balls are installed in the spherical grooves at one ends of the support columns, the four steel balls are in rolling connection with an annular sticker, a moving plate is fixed at the bottom of the annular sticker, a guide rod passes through the moving plate and is fixed between the annular block and the housing cover, and the moving plate and the guide rod form a sliding connection.

[0011] Preferably, the bottom of the moving plate extends outside the housing cover, and a pulley is installed at the bottom of the moving plate. The pulley rolls on the inclined surface at the top of the inclined surface support plate. An opening for the inclined surface support plate to pass through is formed on the arc plate, and the inclined surface support plate passes through the opening and is fixed at the top of the rod body.

[0012] Preferably, extension plates are arranged on both sides of the arc plate, insertion blocks are fixed at the bottoms of the extension plates, and the insertion blocks are inserted into the slots at the top of the rod body to form a clamping connection.

[0013] The second technical solution adopted by the present invention is as follows: A vibration suppression method for a shock-absorbing boring bar for deep hole machining of a hydraulic cylinder block includes the following steps: S1: Insert the arc plate into the slot at the top of the rod body through the insertion block of the extension plate to form a preliminary positioning, and then fix the arc plate and the rod body through screws, so that the shock-absorbing assembly is rigidly connected to the rod body. Rotate the cross bar through the rotating handle to drive the second bevel gear to mesh and drive with the first bevel gear, so that the lead screw rotates and drives the telescopic rod to extend axially along the sleeve until the ball beads contact the inner wall of the deep hole of the cylinder block and form a pre-pressure support. Finally, lock through the one-way locking assembly to improve the stability of the ball beads.

[0014] S2: When the ball beads roll on the inner wall of the deep hole, through the sliding fit between the sleeve and the telescopic rod, the high-frequency vibration energy is converted into a small axial displacement of the telescopic rod, and the energy is dispersed to the rod body frame through the locking structure of the one-way locking component, avoiding the vibration transmission to the blade and suppressing the cutting chatter.

[0015] S3: When the machining depth changes or there are deviations in the cylinder bore diameter, the extension length of the telescopic rod is finely adjusted by rotating the cross bar forward. The clamping plate compresses the positioning spring and slides in the annular groove until it re-engages at the next notch, realizing dynamic support adjustment, so that the ball beads always remain in contact with the inner hole wall. The dense notch design allows the clamping plate to adapt to the angular deviation within the range of ±5°, meeting the support requirements under different machining conditions.

[0016] S4: After the machining is completed, remove the fixing screws of the arc plate. The return spring contracts and pulls the rotating column back, so that the clamping plate disengages from the locked state of the annular groove. At this time, the cross bar rotates in the reverse direction, and the linkage screw drives the telescopic rod to retract into the sleeve. Reinstall the arc plate. The positioning fit between the insertion block and the rod body slot ensures that the shock absorption component quickly resets to the initial position, facilitating the support adjustment for the next machining.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Through the mechanical self-locking structures of the shock absorption component and the one-way locking component, rapid adjustment can be carried out, and the telescopic rod is automatically locked under vibration or external force interference, preventing support displacement, ensuring a constant rigid support of the ball beads, suppressing machining chatter, and guaranteeing the stability and accuracy of deep hole machining.

[0018] 2. Through the further refined design of the one-way locking component, the one-way locking structure of the one-way locking component can be released when the shock absorption component is removed, so that re-adjustment can be carried out during the next use, which is very convenient. Brief Description of the Drawings

[0019] Figure 1 is a structural schematic diagram of the present invention; Figure 2 is an installation schematic diagram of the shock absorption component of the present invention; Figure 3 is an internal structural schematic diagram of the shock absorption component of the present invention; Figure 4 is an installation schematic diagram of the shock absorption component and the one-way locking component of the present invention; Figure 5 is a structural schematic diagram of the arc plate of the present invention; Figure 6 is a structural schematic diagram of the one-way locking component of the present invention; Figure 7 is a front view of the one-way locking component of the present invention; Figure 8Schematic diagram of the internal structure of the one-way locking component of the present invention; Figure 9 Cross-sectional view of the rotating column of the present invention; Figure 10 Cross-sectional view of the housing cover of the present invention; Figure 11 Schematic connection diagram of the inclined plane support plate and the rod body of the present invention.

[0020] In the figure: 1. Rod body; 11. Blade; 12. Installation block; 2. Shock absorption component; 21. Sleeve; 22. Telescopic rod; 23. Ball bead; 24. Rib; 25. Arc plate; 251. Extension plate; 252. Insert block; 26. Circular plate; 27. Lead screw; 28. Bevel gear one; 29. Bevel gear two; 210. Cross bar; 211. Housing cover; 212. Rotating handle; 213. Circular plate; 3. One-way locking component; 31. Rotating column; 32. Ring block; 33. Support rod; 34. Annular groove; 35. Positioning spring; 36. Clamping plate; 37. Stopper; 38. Annular sticker; 39. Support column; 310. Steel ball; 311. Moving plate; 312. Pulley; 313. Inclined plane support plate; 314. Guide rod; 315. Return spring; 316. Convex plate. Detailed implementation mode

[0021] The technical solution of the present invention will be further described in detail below with reference to the drawings and embodiments. Embodiment

[0022] A shock-absorbing boring bar for deep-hole machining of a hydraulic cylinder block, as Figures 1-3 shown, includes a rod body 1, with a blade 11 and an installation block 12 respectively installed at both ends of the rod body 1. A shock absorption component 2 is installed on the rod body 1. The shock absorption component 2 includes an arc plate 25 nailed to the rod body 1. A sleeve 21 is fixed at the top of the arc plate 25. A telescopic rod 22 is slidably installed at the top of the sleeve 21. The telescopic rod 22 slides in the corresponding chute in the sleeve 21 through the ribs 24 provided on both sides. A resilient ball bead 23 is installed at the top of the telescopic rod 22; a circular plate 26 is installed on the inner wall of the sleeve 21. A lead screw 27 is rotatably installed at the center of the circular plate 26. The top of the lead screw 27 is threadedly connected to the bottom of the telescopic rod 22. The lead screw 27 passes through the bottom of the circular plate 26 and is connected to a bevel gear one 28. The bevel gear one 28 meshes with a bevel gear two 29. The bevel gear two 29 is fixed on a cross bar 210; the cross bar 210 is rotatably installed on the sleeve 21. One end of the cross bar 210 passing through the sleeve 21 is provided with a rotating handle 212. The other end of the cross bar 210 passing through the sleeve 21 extends into the housing cover 211 and is connected to a one-way locking component 3. The housing cover 211 is fixed on one side of the sleeve 21, and the cross bar 210 is in transmission connection with the inner wall of the housing cover 211. The one-way locking component 3 is used to limit the one-way rotation of the cross bar 210.

[0023] Specifically, the mounting block 12 is installed on a suitable output end. Through the design of the shock absorption assembly 2, during installation, the arc plate 25 is placed on the surface of the rod body 1 and nailed. Then, the cross bar 210 is rotated by the turning handle 212, so that the second bevel gear 29 and the first bevel gear 28 rotate synchronously through meshing, and then the lead screw 27 rotates. Since the telescopic rod 22 can achieve circumferential limit through the sliding fit of the convex strips 24 on both sides in the chute inside the sleeve 21, while the lead screw 27 rotates, the telescopic rod 22 will perform telescopic movement along the axial direction of the sleeve 21, so as to adjust the protruding length of the ball bead 23 relative to the end of the rod body 1 to meet the requirements of different processing depths or installation spaces. After the telescopic rod 22 is adjusted to a suitable position, the one-way locking assembly 3 is used to limit the one-way rotation of the cross bar 210. When the cross bar 210 is subjected to a reverse driving force (for example, due to processing vibration or external interference attempting to retract the telescopic rod 22), the one-way locking assembly 3 will respond quickly, restrict the reverse rotation of the cross bar 210 through its internal mechanical structure, and then lock the position of the lead screw 27 to prevent the telescopic rod 22 from accidentally retracting, ensuring that the ball bead 23 is always stably supported at the preset position, providing a reliable support and shock absorption foundation for the entire shock absorption boring bar.

[0024] As Figure 6 and 9 shown, the one-way locking assembly 3 includes a rotating column 31. Two symmetric convex plates 316 are arranged inside the rotating column 31. The cross bar 210 passes through the center of the rotating column 31, and notches corresponding to the positions of the convex plates 316 are formed on the cross bar 210. The convex plates 316 are stuck in the notches of the cross bar 210 and can slide back and forth. The cooperation between the convex plates 316 and the notches enables the cross bar 210 and the rotating column 31 to rotate synchronously. As Figure 6 and 7 shown, grooves are arranged on both sides of the rotating column 31. A clamping plate 36 is rotatably installed in the grooves. A positioning spring 35 is connected between the other end of the clamping plate 36 and the grooves. An annular block 32 is arranged outside the rotating column 31. Both sides of the annular block 32 are connected to the inner wall of the housing 211 through support rods 33. Densely distributed annular channels 34 are arranged on the inner wall of the annular block 32. The notch of the annular channel 34 is designed as an inclined surface. When the clamping plate 36 is stuck in the notch of the annular channel 34, the clamping plate 36 can only rotate reversely towards the outside of the groove to the maximum angle.

[0025] Specifically, through the structural design of the above-mentioned one-way locking component 3, when the cross bar 210 rotates forward, the rotating column 31 is driven to rotate forward by the convex plate 316. At this time, the clamping plate 36 rotates clockwise along the notch of the annular channel 34. The notch is designed as an inclined surface, and the clamping plate 36 will continuously rotate into the concave opening of the rotating column 31 to compress the positioning spring 35, and pop out from the notch of the next annular channel 34 to re-engage. The dense distribution can reduce errors. While the cross bar 210 rotates forward, the telescopic rod 22 moves outward from the sleeve 21. When the ball 23 is adjusted to the appropriate position, the clamping plate 36 is stuck in one of the notches of the annular channel 34 and cannot rotate against the inclined surface of the notch, so that the cross bar 210 cannot rotate backward, and the telescopic rod 22 will not move downward into the sleeve 21. In this way, it can be ensured that the ball 23 always stably supports at the preset position, enhancing the stability.

[0026] As Figure 6 and 8 shown, a stopper 37 is fixed on the cross bar 210. The stopper 37 is attached to one side of the rotating column 31. A round plate 213 is fixed on the other side of the cross bar 210 passing through the center of the rotating column 31. A return spring 315 is connected between the round plate 213 and the rotating column 31. As Figure 8 and 10 shown, four support columns 39 are evenly fixed on the side of the rotating column 31 away from the stopper 37. Steel balls 310 are installed in the spherical grooves at one ends of the support columns 39. The four steel balls 310 are in rolling connection with the annular attaching plate 38. The bottom of the annular attaching plate 38 is fixed with a moving plate 311. The guide rod 314 passes through the moving plate 311 and is fixed between the ring block 32 and the housing 211, and the moving plate 311 and the guide rod 314 form a sliding connection, that is, when the moving plate 311 moves, it can be limited and guided by the guide rod 314. As Figure 4 、 5 、8、10 and 11 shown, the bottom of the moving plate 311 extends outside the housing 211, and a pulley 312 is installed at the bottom of the moving plate 311. The pulley 312 rolls on the inclined surface at the top of the inclined surface support plate 313. An opening for the inclined surface support plate 313 to pass through is formed on the arc plate 25. The inclined surface support plate 313 passes through the opening and is fixed on the top of the rod body 1.

[0027] Specifically, when the arc plate 25 is attached and installed to the rod body 1, the inclined surface support plate 313 fixed on the top of the rod body 1 passes through the opening formed on the arc plate 25 and contacts the pulley 312 installed at the bottom of the moving plate 311, so that the pulley 312 rolls on the inclined surface at the top of the inclined surface support plate 313, thereby pushing the moving plate 311 and the annular attaching plate 38 to move forward, and then making the annular attaching plate 38 contact the steel balls 310 and push the support columns 39 and the rotating column 31 to move and contact the stopper 37. At this time, the convex plate 316 slides to the appropriate position in the concave opening of the cross bar 210, and at the same time stretches the return spring 315, so that the rotating column 31 is in the locked position, and further the cross bar 210 is locked; After processing is completed and unlocking is required for reset operation, the arc plate 25 is removed, the inclined plane support plate 313 is separated from the pulley 312, and the return spring 315 drives the rotation column 31 to move back by elastic reset. At this time, the rotation column 31 moves to the outside of one side of the ring block 32, and the clamping plate 36 on the rotation column 31 disengages from the notch of the annular channel 34 on the inner wall of the ring block 32. In this way, the rotation column 31 can be rotated in the reverse direction to unlock. Rotating the cross bar 210 in the reverse direction causes the lead screw 27 to rotate in the reverse direction, driving the telescopic rod 22 to contract. For the next adjustment, the arc plate 25 can be reinstalled on the rod body 1.

[0028] Such as Figure 4 and 5 As shown in the figure, extension plates 251 are provided on both sides of the arc plate 25, and insertion blocks 252 are fixed to the bottoms of the extension plates 251. The insertion blocks 252 are inserted into the slots at the top of the rod body 1 to form a snap fit. Through the design of the extension plates 251, when the arc plate 25 is in contact with the rod body 1, the extension plates 251 are also in contact with the rod body 1, and the insertion blocks 252 can be inserted into the slots at the top of the rod body 1. In this way, preliminary positioning is formed, facilitating subsequent screwing to fix the arc plate 25. Embodiment

[0029] A vibration suppression method for a shock-absorbing boring bar used in deep-hole machining of a hydraulic cylinder block includes the following steps: S1: Insert the arc plate 25 into the slot at the top of the rod body 1 through the insertion block 252 of the extension plate 251 to form preliminary positioning, and then fix the arc plate 25 to the rod body 1 by screws, making the shock-absorbing component 2 rigidly connected to the rod body 1. Rotate the cross bar 210 through the rotating handle 212 to drive the second bevel gear 29 to mesh and drive with the first bevel gear 28, causing the lead screw 27 to rotate and driving the telescopic rod 22 to extend axially along the sleeve 21 until the ball beads 23 contact the inner wall of the deep hole of the cylinder block and form a pre-pressure support. Finally, lock it through the one-way locking component 3 to improve the stability of the ball beads 23.

[0030] S2: When the ball beads 23 roll on the inner wall of the deep hole, through the sliding fit between the sleeve 21 and the telescopic rod 22, the high-frequency vibration energy is converted into the small axial displacement of the telescopic rod 22, and the energy is dispersed to the rod body 1 frame through the locking structure of the one-way locking component 3, avoiding the vibration being transmitted to the blade 11 and suppressing cutting chatter.

[0031] S3: When the machining depth changes or there are deviations in the bore diameter of the cylinder block, rotate the cross bar 210 forward to finely adjust the extension length of the telescopic rod 22. The clamping plate 36 compresses the positioning spring 35 and slides in the annular channel 34 until it engages again at the next notch, realizing dynamic support adjustment, so that the ball beads 23 always remain in contact with the inner hole wall. The dense notch design allows the clamping plate 36 to adapt to the angular deviation within ±5°, meeting the support requirements under different machining conditions.

[0032] S4: After the processing is completed, remove the fixing screws of the arc plate 25. The return spring 315 contracts and pulls the rotating column 31 back, causing the clamping plate 36 to disengage from the locked state of the annular channel 34. At this time, the cross bar 210 rotates in the reverse direction, and the linkage screw rod 27 drives the telescopic rod 22 to retract into the sleeve 21. Reinstall the arc plate 25. The positioning fit between the insertion block 252 and the slot of the rod body 1 ensures that the shock absorption assembly 2 quickly returns to the initial position, facilitating the support adjustment for the next processing.

[0033] Based on the ideal embodiments of the present invention as inspiration, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A vibration-damping boring bar for deep hole machining of a hydraulic cylinder body, comprising a rod body (1), a blade (11) and a mounting block (12) being mounted at both ends of the rod body (1), a vibration-damping assembly (2) being mounted on the rod body (1), and characterized in that: The shock absorbing assembly (2) comprises an arc plate (25) nailed to the rod body (1), a sleeve (21) being fixed on the top of the arc plate (25), a retractable telescopic rod (22) being slidably mounted on the top of the sleeve (21), the telescopic rod (22) sliding in a slide groove arranged at a corresponding position in the sleeve (21) through convex strips (24) arranged on both sides, and a ball (23) being mounted on the top of the telescopic rod (22); a circular plate (26) being mounted on the inner wall of the sleeve (21), a screw rod (27) being rotatably mounted at the center of the circular plate (26), the top of the screw rod (27) being threadedly connected to the bottom of the telescopic rod (22), and the screw rod (27) being threadedly mounted on the top of the telescopic rod (22). ) is connected to a bevel gear 1 (28) at the bottom of the circular plate (26), the bevel gear 1 (28) meshing with a bevel gear 2 (29), the bevel gear 2 (29) being fixed on a cross bar (210); the cross bar (210) is rotatably mounted on the sleeve (21), one end of the cross bar (210) passing through the sleeve (21) is provided with a handle (212), the other end of the cross bar (210) passing through the sleeve (21) extends to the inside of a shell cover (211) and docks with a one-way locking assembly (3), the shell cover (211) is fixed on one side of the sleeve (21), and the one-way locking assembly (3) is used to limit the one-way rotation of the cross bar (210).

2. The vibration-damping boring bar for deep hole machining of a hydraulic cylinder body according to claim 1, characterized in that: The one-way locking assembly (3) comprises a rotating column (31), two symmetrical convex plates (316) are arranged on the inner side of the rotating column (31), the cross bar (210) passes through the center of the rotating column (31), and a notch corresponding to the position of the convex plate (316) is opened on the cross bar (210), the convex plate (316) is stuck in the notch of the cross bar (210) and can slide back and forth, and the convex plate (316) cooperates with the notch so that the cross bar (210) and the rotating column (31) can rotate synchronously.

3. The vibration-damping boring bar for deep hole machining of a hydraulic cylinder body according to claim 2, characterized in that: Grooves are provided on both sides of the rotating column (31), a clamping plate (36) is rotatably mounted in the groove, and a positioning spring (35) is connected between the other end of the clamping plate (36) and the groove; a ring block (32) is provided outside the rotating column (31), and both sides of the ring block (32) are connected to the inner wall of the shell cover (211) through supporting rods (33); the inner wall of the ring block (32) is provided with densely distributed annular grooves (34), the notches of the annular grooves (34) are inclined surfaces, and the clamping plate (36) is clamped in the notches of the annular grooves (34).

4. The vibration-damping boring bar for deep hole machining of a hydraulic cylinder body according to claim 3, characterized in that: A stopper (37) is fixed on the cross bar (210), and the stopper (37) is attached to one side of the rotating column (31). A circular plate (213) is fixed on the other side of the cross bar (210) passing through the center of the rotating column (31), and a return spring (315) is connected between the circular plate (213) and the rotating column (31).

5. The vibration-damping boring bar for deep hole machining of a hydraulic cylinder body according to claim 4, characterized in that: Four support columns (39) are evenly fixed on one side of the rotating column (31) away from the stopper (37); a steel ball (310) is installed in a spherical groove at one end of the support column (39); the four steel balls (310) are rollingly connected to the annular plate (38); a moving plate (311) is fixed to the bottom of the annular plate (38); a guide rod (314) passes through the moving plate (311) and is fixed between the ring block (32) and the shell cover (211); and the moving plate (311) and the guide rod (314) are slidably connected.

6. The vibration-damping boring bar for deep hole machining of a hydraulic cylinder body according to claim 5, characterized in that: The bottom of the movable plate (311) extends outside the housing (211), and a pulley (312) is installed at the bottom of the movable plate (311), and the pulley (312) rolls on the inclined surface at the top of the inclined support plate (313). The arc plate (25) is provided with an opening for the inclined support plate (313) to pass through, and the inclined support plate (313) passes through the opening and is fixed to the top of the rod body (1).

7. The vibration-damping boring bar for deep hole machining of a hydraulic cylinder body according to claim 6, characterized in that: Extension plates (251) are provided on both sides of the arc plate (25), an insert block (252) is fixed to the bottom of the extension plate (251), and the insert block (252) is inserted into a slot at the top of the rod body (1) to form a snap fit.

8. A vibration suppression method for a damping boring bar for deep hole machining of a hydraulic cylinder as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: S1: inserting the arc plate (25) into the slot at the top of the rod body (1) through the insert block (252) of the extension plate (251) to form a preliminary positioning, and then fixing the arc plate (25) and the rod body (1) with screws to make the shock absorbing assembly (2) and the rod body (1) rigidly connected, and rotating the cross bar (210) through the turning handle (212) to drive the bevel gear 2 (29) and the bevel gear 1 (28) to mesh and transmit, so that the screw rod (27) rotates and drives the telescopic rod (22) to extend axially along the sleeve (21) until the ball (23) contacts the inner wall of the deep hole of the cylinder body and forms a pre-compression support, and finally locking it through the one-way locking assembly (3) to improve the stability of the ball (23); S2: When the ball (23) rolls on the inner wall of the deep hole, the sleeve (21) and the telescopic rod (22) slide together to convert high-frequency vibration energy into a small axial displacement of the telescopic rod (22), and the energy is dispersed to the rod body (1) frame through the locking structure of the one-way locking component (3), thereby preventing the vibration from being transmitted to the blade (11) and suppressing the cutting chatter; S3: When the processing depth changes or there is a deviation in the cylinder bore diameter, the extension length of the telescopic rod (22) is finely adjusted by rotating the cross bar (210) forward, and the clamping plate (36) compresses the positioning spring (35) to slide in the annular groove (34) until it re-engages in the next notch, thereby realizing dynamic support adjustment, so that the ball (23) always keeps in contact with the inner hole wall. The dense notch design allows the clamping plate (36) to adapt to the angle deviation within the range of ±5° to meet the support requirements under different processing conditions; S4: After the processing is completed, the fixing screws of the arc plate (25) are removed, the reset spring (315) contracts and pulls the rotating column (31) back, so that the clamping plate (36) is released from the locked state of the annular groove (34). At this time, the cross bar (210) rotates in the opposite direction, and the linkage screw (27) drives the telescopic rod (22) to retract into the sleeve (21). The arc plate (25) is reinstalled, and the positioning cooperation between the insert block (252) and the slot of the rod body (1) ensures that the shock absorbing assembly (2) is quickly reset to the initial position, which is convenient for the support adjustment of the next processing.

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