Pipe body ring groove processing device and method

Abstract

This invention belongs to the field of pipe body processing technology, and discloses a pipe body annular groove processing device and method. The pipe body annular groove processing device includes a base sleeve, a first guide sleeve, a cutter, a drive sleeve, a first elastic element, and a second elastic element. The base sleeve has a processing groove. The cutter is fixed on the first guide sleeve and can extend into the processing groove. The drive sleeve is fitted onto the base sleeve through its own circular sleeve hole. The circular sleeve hole includes an inner pushing hole wall that is inclined outward relative to the base sleeve from top to bottom. The inner pushing hole wall can push the first guide sleeve to move so that the cutter can extend into the processing groove. The first elastic element provides a force that forces the drive sleeve to move upward relative to the base sleeve, and the second elastic element provides a force that forces the first guide sleeve to move away from the base sleeve. The pipe body annular groove processing method uses the above-described device. This device has a simple structure and is easy to operate. It can conveniently process annular grooves on the side wall of valve guides without the need for large machine tools or cylinder head replacement, resulting in high operating efficiency and effective control of processing costs.

Description

Technical Field

[0001] This invention relates to the field of pipe processing technology, and in particular to a pipe annular groove processing apparatus and method. Background Technology

[0002] Valve guides are crucial components of automotive engines. They not only ensure the valves perform low-resistance reciprocating linear motion and properly engage with the valve seat, but also work with the valve guide oil seal to ensure lubrication and heat transfer between the valve and valve guide, while preventing excessive oil from flowing into the intake manifold. In actual production and market repair, problems such as valve guide oil seal detachment and unreliable installation frequently occur, posing potential quality risks. These issues can lead to problems like engine oil burning, piston carbon buildup, and insufficient oil levels, and in severe cases, even serious engine failures such as cylinder head puncture.

[0003] Analysis shows that the common cause of valve guide oil seal detachment is insufficient static friction between the oil seal and the guide. When the oil seal is pressed into the guide with interference fit, the reverse elastic force of the rubber exceeds the static friction between them. To prevent the oil seal from detaching again, the friction between the valve guide outer diameter and the oil seal needs to be increased. The most direct way to increase this friction is to deepen the annular groove on the valve guide outer diameter.

[0004] Currently, valve guides are machined and installed as an integrated unit with cylinder heads, making independent repair impossible. Once a diesel engine experiences a serious malfunction caused by valve guides, the entire cylinder head or the entire engine needs to be replaced, resulting in significant economic losses. Summary of the Invention

[0005] The purpose of this invention is to provide a device and method for machining annular grooves in a valve body. The device has a simple structure and is easy to operate. It can conveniently machine annular grooves on the side wall of the valve guide without the need for large machine tools or cylinder head replacement. It has high operating efficiency and effectively controls machining costs.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A pipe body annular groove processing device, comprising:

[0008] A base sleeve, wherein a machining groove is formed on the lower end face of the base sleeve, and a through hole is formed on the side wall of the base sleeve to communicate with the machining groove;

[0009] The first guide sleeve is fitted onto the base sleeve and is movable relative to the base sleeve;

[0010] A cutting blade is fixed to the first guide sleeve, and the cutting blade can pass through the through hole and extend into the processing groove;

[0011] A drive sleeve has a circular sleeve hole, and the drive sleeve is sleeved on the base sleeve through the circular sleeve hole. The circular sleeve hole includes an inner push hole wall that is inclined outward relative to the base sleeve from top to bottom. When the drive sleeve moves downward relative to the base sleeve, the inner push hole wall can push the first guide sleeve towards the central axis of the base sleeve, so that the cutter can extend into the processing groove.

[0012] A first elastic element is located between the base sleeve and the drive sleeve, and the first elastic element provides a force that forces the drive sleeve to move upward relative to the base sleeve;

[0013] A second elastic element is located between the base sleeve and the first guide sleeve, and the second elastic element provides a force that forces the first guide sleeve to move away from the central axis of the base sleeve.

[0014] Preferably, the first elastic element is disposed within the circular sleeve hole.

[0015] Preferably, both the first elastic element and the second elastic element are configured as springs.

[0016] Preferably, the first guide sleeve has a mounting hole, the cutter passes through the mounting hole, and can be fixed relative to the mounting hole.

[0017] Preferably, the first guide sleeve is provided with a threaded locking member, and the first guide sleeve has a locking screw hole communicating with the mounting hole. The threaded locking member is threadedly connected to the locking screw hole, and the threaded locking member is adapted to be screwed into the locking screw hole and tightly abut against the cutter when the cutter is inserted into the mounting hole.

[0018] Preferably, the drive sleeve has a clearance groove, which allows one end of the cutter away from the base sleeve to extend out of the drive sleeve.

[0019] Preferably, the first guide sleeve includes a first outer push-abutment peripheral wall that can abut against the inner push-abutment hole wall. The first outer push-abutment peripheral wall is inclined outward from top to bottom in the vertical direction, and the inclination angle of the first outer push-abutment peripheral wall is equal to that of the inner push-abutment hole wall.

[0020] Preferably, the system further includes a second guide sleeve, which is sleeved on the base sleeve and can move relative to the base sleeve. The second guide sleeve includes a second outer push-abutment peripheral wall that can abut against the inner push-abutment hole wall. The second outer push-abutment peripheral wall is inclined outward relative to the base sleeve from top to bottom, and the inclination angle of the second outer push-abutment peripheral wall is equal to that of the inner push-abutment hole wall.

[0021] Preferably, the outer peripheral wall of the base sleeve is provided with an annular guide groove along its own radial direction, and the through hole is opened at the bottom of the annular guide groove. Both the first guide sleeve and the second guide sleeve can be telescopically disposed in the annular guide groove.

[0022] A method for machining annular grooves in a pipe body, using the pipe annular groove machining apparatus described in any of the above claims, mainly includes the following steps:

[0023] S100. Insert the tube body of the ring groove to be processed into the processing groove, so that the axis of the tube body coincides with the axis of the processing groove, and the upper end face of the tube body abuts against the bottom of the processing groove.

[0024] S200. Apply pressure to the drive sleeve to drive the drive sleeve to move downward relative to the base sleeve, so that the inner push hole wall pushes against the first guide sleeve and moves toward the central axis of the base sleeve, so that the cutter extends into the processing groove and cuts into the side wall of the tube body.

[0025] S300. Continuously apply pressure to the drive sleeve to control the base sleeve to rotate relative to the tube body along its own axial direction, so that the cutter can process an annular groove on the side wall of the tube body.

[0026] S400. After the annular groove is machined, the pressure applied to the drive sleeve is released. The first elastic element drives the drive sleeve to move upward relative to the base sleeve, and the second elastic element drives the first guide sleeve to move away from the central axis of the base sleeve, so that the cutter retracts from the machining groove.

[0027] Beneficial effects:

[0028] The pipe annular groove processing apparatus provided by this invention, when processing annular grooves on the sidewall of a valve guide, firstly...

[0029] The entire device is mounted on the machining groove on the base sleeve at the end of the valve guide where the annular groove needs to be machined. The valve guide extends into the machining groove, with its upper surface abutting against the bottom of the groove, and the axes of the valve guide and the machining groove coinciding. The operator then presses down on the drive sleeve, applying pressure and causing it to move downwards relative to the base sleeve. This pushes the inner push hole wall against the first guide sleeve, moving it closer to the central axis of the base sleeve. This allows the cutter to advance, extending into the machining groove and cutting into the area on the side wall of the valve guide where the annular groove was originally formed. Pressure is then continuously applied to the drive sleeve, and the base sleeve is controlled to rotate relative to the valve guide along its own axial direction, allowing the cutter to machine the annular groove on the side wall of the valve guide. Finally, after the annular groove is machined, the operator releases the pressure applied to the drive sleeve. The elastic force of the first elastic element can drive the first guide sleeve to move upward relative to the base sleeve, so that the inner push-abutment hole wall releases the push against the first guide sleeve. The elastic force of the second elastic element can drive the first guide sleeve to move away from the central axis of the base sleeve, so that the cutter retracts from the machining groove, thereby completing the machining of the entire annular groove.

[0030] This pipe ring groove machining device has a simple structure and is easy to operate. It can easily machine ring grooves on the side wall of valve guides without the need for large machine tools or cylinder head replacement. It has high operating efficiency and effectively controls machining costs. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of the pipe annular groove processing device provided by the present invention;

[0032] Figure 2 This is a cross-sectional schematic diagram of the tube annular groove processing device provided by the present invention;

[0033] Figure 3 This is a schematic diagram of the main steps of the pipe annular groove processing method provided by the present invention.

[0034] In the picture:

[0035] 1. Base sleeve; 11. Machining groove; 12. Perforation; 13. Annular guide groove;

[0036] 2. First guide sleeve; 201. First outer push-abutment peripheral wall; 21. Mounting hole; 22. Locking screw hole; 23. Threaded locking element;

[0037] 3. Cutting knife;

[0038] 4. Drive sleeve; 41. Circular sleeve hole; 411. Inner push against the hole wall; 42. Clearance groove;

[0039] 5. First elastic element;

[0040] 6. Second elastic element;

[0041] 7. Second guide sleeve; 701. Second outer push against the peripheral wall. Detailed Implementation

[0042] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0043] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0045] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0046] This embodiment provides a device for machining annular grooves in a pipe body. (Refer to...) Figures 1 to 2As shown, the pipe body annular groove processing device includes a base sleeve 1, a first guide sleeve 2, a cutter 3, a drive sleeve 4, a first elastic element 5, and a second elastic element 6. The lower end face of the base sleeve 1 has a processing groove 11, and the side wall of the base sleeve 1 has a through hole 12 communicating with the processing groove 11. The first guide sleeve 2 is fitted onto the base sleeve 1 and can move relative to the base sleeve 1. The cutter 3 is fixed to the first guide sleeve 2 and can pass through the through hole 12 and extend into the processing groove 11. The drive sleeve 4 has a circular sleeve hole 41, through which the drive sleeve 4 is fitted onto the base sleeve 1. The circular sleeve hole 41 includes an inner pushing hole wall 411 that is inclined outwards relative to the base sleeve 1 from top to bottom. The downward movement of the drive sleeve 4 relative to the base sleeve 1 causes the inner pushing hole wall 411 to push against the first guide sleeve 2, moving it towards the central axis of the base sleeve 1, so that the cutter 3 extends into the processing groove 11. The first elastic element 5 is located between the base sleeve 1 and the drive sleeve 4, and the first elastic element 5 provides a force that forces the drive sleeve 4 to move upward relative to the base sleeve 1; the second elastic element 6 is located between the base sleeve 1 and the first guide sleeve 2, and the second elastic element 6 provides a force that forces the first guide sleeve 2 to move away from the central axis of the base sleeve 1.

[0047] This pipe grooving processing device can perform grooving on the sidewalls of circular pipes. Combined with... Figure 3 As shown, this embodiment also provides a method for machining annular grooves in a pipe body, which utilizes the aforementioned pipe annular groove machining apparatus. The pipe annular groove machining method provided in this embodiment mainly includes the following steps:

[0048] S100. Insert the tube body of the ring groove to be processed into the processing groove 11, so that the axis of the tube body coincides with that of the processing groove 11, and the upper end face of the tube body abuts against the bottom of the processing groove 11.

[0049] S200. Apply pressure to the drive sleeve 4 to drive the drive sleeve 4 to move downward relative to the base sleeve 1, so that the inner push-abutment hole wall 411 pushes against the first guide sleeve 2 and moves towards the central axis of the base sleeve 1, so that the cutter 3 extends into the processing groove 11 and cuts into the side wall of the tube.

[0050] S300: Continuously apply pressure to the drive sleeve 4 to control the base sleeve 1 to rotate relative to the tube body along its own axial direction, so that the cutter 3 can process an annular groove on the side wall of the tube body.

[0051] S400. After the annular groove is machined, the pressure applied to the drive sleeve 4 is released. The first elastic element 5 drives the first guide sleeve 2 to move upward relative to the base sleeve 1, and the second elastic element 6 drives the first guide sleeve 2 to move away from the central axis of the base sleeve 1, so that the cutter 3 retracts from the machining groove 11.

[0052] For example, taking the pipe body as a valve guide, when machining an annular groove on the side wall of the valve guide, the pipe body annular groove machining device is first fitted onto the end of the valve guide where the annular groove needs to be machined through the machining groove 11 on the base sleeve 1. That is, the valve guide extends into the machining groove 11, so that the upper end face of the valve guide abuts against the bottom of the groove 11, and the axis of the valve guide and the machining groove 11 are kept coincident.

[0053] It is worth mentioning that the valve guides installed on the cylinder head already have annular grooves on their side walls, but the groove depth is insufficient, and the grooves need to be deepened by a pipe body annular groove machining device.

[0054] It is worth mentioning that before the valve guide is inserted into the machining groove 11, a clean cloth strip needs to be wrapped around the wire hook and inserted into the inner hole of the valve guide. The cloth strip is placed entirely in the inner hole of the valve guide, thereby reliably sealing the inner hole of the valve guide.

[0055] Subsequently, the operator presses down on the drive sleeve 4, applying pressure to it and causing it to move downward relative to the base sleeve 1. This causes the inner push-abutment hole wall 411 to push against the first guide sleeve 2, moving it closer to the central axis of the base sleeve 1. This allows the cutter 3 to advance, extending into the machining groove 11 and cutting into the area on the side wall of the valve guide where the annular groove was originally formed. Specifically, in this step, both the first elastic element 5 and the second elastic element 6 are compressed, generating elastic force.

[0056] Next, pressure is continuously applied to the drive sleeve 4, and the base sleeve 1 is controlled to rotate relative to the valve guide along its own axial direction, so that the cutter 3 can machine annular grooves on the side wall of the valve guide. In actual machining operations, the base sleeve 1 needs to rotate at least 5 times along its own axial direction, that is, the rotation angle needs to be at least 1800°, so as to ensure a considerable grooving effect.

[0057] After the annular groove is machined, the operator releases the pressure applied to the drive sleeve 4. The elastic force of the first elastic element 5 drives the drive sleeve 4 upward in a direction away from the base sleeve 1, so that the inner push-abutment hole wall 411 releases its push against the first guide sleeve 2. The elastic force of the second elastic element 6 drives the first guide sleeve 2 in a direction away from the central axis of the base sleeve 1, so that the cutter 3 retracts from the machining groove 11. Finally, the cloth strip and wire hook in the inner hole of the valve guide are removed, thus completing the machining of the entire annular groove.

[0058] The above process is convenient and reliable, requiring no large machine tools and can be performed manually by operators. During device installation, the outer diameter of the valve guide itself serves as the positioning reference, ensuring coaxiality during machining. The tools are easy to use, and the machining accuracy is reliable. Furthermore, it allows for convenient machining of annular grooves on the sidewalls of the valve guide while maintaining the valve guide and cylinder head as an integral unit, eliminating the need to replace the cylinder head. This results in high operational efficiency and effective control of machining costs.

[0059] This embodiment is not limited to this. In addition to valve guides, the pipe body annular groove processing device can also process other pipe bodies that need to have side wall annular grooves. No further limitations are made here.

[0060] The detailed structure of the tube annular groove processing device provided in this embodiment is described in detail below.

[0061] Continue to refer to Figures 1 to 2 As shown, the first elastic element 5 is disposed within the circular sleeve hole 41. Disposing the first elastic element 5 within the circular sleeve hole 41 ensures reliable and effective installation of the first elastic element 5 and also makes reasonable use of the internal space of the circular sleeve hole 41.

[0062] Preferably, the end face of the first guide sleeve 2 facing the base sleeve 1 is provided with a receiving groove, and one end of the second elastic member 6 is located in the receiving groove and abuts against the bottom of the receiving groove. By providing the receiving groove, the installation of the second elastic member 6 can be made more reliable.

[0063] For example, both the first elastic element 5 and the second elastic element 6 are configured as springs.

[0064] In this embodiment, the first guide sleeve 2 has a mounting hole 21, and the cutter 3 passes through the mounting hole 21 and can be fixed relative to the mounting hole 21. Specifically, the cutter 3 can be fixedly mounted on the first guide sleeve 2 through the mounting hole 21, and the cutter 3 can extend into the processing groove 11 through the mounting hole 21 and the through hole 12.

[0065] Furthermore, the first guide sleeve 2 is provided with a threaded locking element 23, and the first guide sleeve 2 has a locking screw hole 22 communicating with the mounting hole 21. The threaded locking element 23 is threadedly connected to the locking screw hole 22. The threaded locking element 23 is adapted to be screwed into the locking screw hole 22 and tightly abut against the cutter 3 when the cutter 3 is in place relative to the mounting hole 21. Specifically, when the cutter 3 is in place relative to the mounting hole 21, the threaded locking element 23 is screwed into the locking screw hole 22, extends into the locking screw hole 22 and tightly abuts against the side wall of the cutter 3, thereby effectively fixing the cutter 3.

[0066] In this embodiment, the threaded locking member 23 is configured as a bolt that matches the locking screw hole 22.

[0067] In this embodiment, the drive sleeve 4 is provided with a relief groove 42, which is used to allow the end of the cutter 3 away from the base sleeve 1 to extend out of the drive sleeve 4.

[0068] In this embodiment, the first guide sleeve 2 includes a first outer push peripheral wall 201 that can abut against the inner push hole wall 411. The first outer push peripheral wall 201 is inclined outward from top to bottom in the vertical direction, and the inclination angle of the first outer push peripheral wall 201 is equal to that of the inner push hole wall 411.

[0069] Specifically, when the drive sleeve 4 moves downward relative to the base sleeve 1, the inner push hole wall 411 pushes inward against the first outer push peripheral wall 201, and the sliding fit between the inner push hole wall 411 and the first outer push peripheral wall 201 enables the first guide sleeve 2 to move more reliably and smoothly toward the central axis of the base sleeve 1, which is more conducive to the smooth entry of the cutter 3.

[0070] Furthermore, the pipe body annular groove processing device also includes a second guide sleeve 7, which is sleeved on the base sleeve 1 and can move relative to the base sleeve 1. The second guide sleeve 7 includes a second outer pushing peripheral wall 701 that can abut against the inner pushing hole wall 411. The second outer pushing peripheral wall 701 is inclined outward relative to the base sleeve 1 from top to bottom, and the inclination angle of the second outer pushing peripheral wall 701 is equal to that of the inner pushing hole wall 411.

[0071] Specifically, both the first guide sleeve 2 and the second guide sleeve 7 are configured as sector-shaped sleeves with non-closed loops. The first guide sleeve 2 and the second guide sleeve 7 are arranged opposite each other along the radial direction of the base sleeve 1.

[0072] Furthermore, an annular guide groove 13 is formed on the outer peripheral wall of the base sleeve 1 along its radial direction, and a through hole 12 is formed at the bottom of the annular guide groove 13. The first guide sleeve 2 and the second guide sleeve 7 can both be telescopically disposed in the annular guide groove 13. By setting the annular guide groove 13, the movement of the first guide sleeve 2 and the second guide sleeve 7 can be guided, ensuring that the first guide sleeve 2 and the second guide sleeve 7 move strictly along the radial direction of the base sleeve 1 when pushed by the inner pushing hole wall 411, and preventing the first guide sleeve 2 and the second guide sleeve 7 from moving up and down.

[0073] It is worth mentioning that when the first guide sleeve 2 and the second guide sleeve 7 move to abut against the bottom of the annular guide groove 13, the first guide sleeve 2 and the second guide sleeve 7 move to their extreme positions in the direction close to the central axis of the base sleeve 1. If it is necessary to further adjust the cutting depth of the cutter 3 at this time, it is necessary to adjust the insertion position of the cutter 3 in the locking screw hole 22 by tightening the threaded locking member 23.

[0074] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A device for processing annular grooves in a pipe body, characterized in that, include: The base sleeve (1) has a machining groove (11) on its lower end face and a through hole (12) on its side wall that communicates with the machining groove (11). The first guide sleeve (2) is sleeved on the base sleeve (1) and can move relative to the base sleeve (1); The cutter (3) is fixed on the first guide sleeve (2), and the cutter (3) can pass through the through hole (12) and extend into the processing groove (11); The drive sleeve (4) has a circular sleeve hole (41). The drive sleeve (4) is sleeved on the base sleeve (1) through the circular sleeve hole (41). The circular sleeve hole (41) includes an inner push hole wall (411) that is inclined outward relative to the base sleeve (1) from top to bottom. When the drive sleeve (4) moves downward relative to the base sleeve (1), the inner push hole wall (411) pushes against the first guide sleeve (2) and moves towards the direction close to the central axis of the base sleeve (1), so that the cutter (3) extends into the processing groove (11). A first elastic element (5) is located between the base sleeve (1) and the drive sleeve (4), and the first elastic element (5) provides a force that forces the drive sleeve (4) to move upward relative to the base sleeve (1); The second elastic element (6) is located between the base sleeve (1) and the first guide sleeve (2), and the second elastic element (6) provides a force that forces the first guide sleeve (2) to move away from the central axis of the base sleeve (1).

2. The pipe body annular groove processing device according to claim 1, characterized in that, The first elastic element (5) is disposed inside the circular sleeve hole (41).

3. The pipe body annular groove processing device according to claim 1, characterized in that, Both the first elastic element (5) and the second elastic element (6) are configured as springs.

4. The pipe body annular groove processing device according to claim 1, characterized in that, The first guide sleeve (2) has an installation hole (21), and the cutter (3) passes through the installation hole (21) and can be fixed relative to the installation hole (21).

5. The pipe body annular groove processing device according to claim 4, characterized in that, The first guide sleeve (2) is provided with a threaded locking member (23), and the first guide sleeve (2) is provided with a locking screw hole (22) communicating with the mounting hole (21). The threaded locking member (23) is threadedly connected to the locking screw hole (22). The threaded locking member (23) is adapted to be screwed into the locking screw hole (22) and tightly abut against the cutter (3) when the cutter (3) is inserted into the mounting hole (21).

6. The pipe body annular groove processing device according to claim 1, characterized in that, The drive sleeve (4) has a clearance groove (42) for the cutter (3) to extend out of the drive sleeve (4) at one end away from the base sleeve (1).

7. The pipe body annular groove processing device according to claim 1, characterized in that, The first guide sleeve (2) includes a first outer push peripheral wall (201) that can abut against the inner push hole wall (411). The first outer push peripheral wall (201) is inclined outward from top to bottom in the vertical direction. The inclination angle of the first outer push peripheral wall (201) and the inner push hole wall (411) is equal.

8. The pipe body annular groove processing device according to claim 7, characterized in that, It also includes a second guide sleeve (7), which is sleeved on the base sleeve (1) and can move relative to the base sleeve (1). The second guide sleeve (7) includes a second outer push peripheral wall (701) that can abut against the inner push hole wall (411). The second outer push peripheral wall (701) is inclined outward relative to the base sleeve (1) from top to bottom. The inclination angle of the second outer push peripheral wall (701) is equal to that of the inner push hole wall (411).

9. The pipe body annular groove processing device according to claim 8, characterized in that, The outer peripheral wall of the base sleeve (1) is provided with an annular guide groove (13) along its own radial direction. The perforation (12) is opened at the bottom of the annular guide groove (13). The first guide sleeve (2) and the second guide sleeve (7) can be telescopically arranged in the annular guide groove (13).

10. A method for machining annular grooves in a pipe body, characterized in that, The tube body annular groove processing apparatus according to any one of claims 1-9, the tube body annular groove processing method mainly includes the following steps: S100. Insert the tube body of the ring groove to be processed into the processing groove (11) so that the axis of the tube body coincides with the axis of the processing groove (11) and the upper end face of the tube body abuts against the bottom of the processing groove (11). S200. Apply pressure to the drive sleeve (4) to drive the drive sleeve (4) to move downward relative to the base sleeve (1), so that the inner push hole wall (411) pushes against the first guide sleeve (2) and moves toward the central axis of the base sleeve (1), so that the cutter (3) extends into the processing groove (11) and cuts into the side wall of the tube body; S300. Continuously apply pressure to the drive sleeve (4) and control the base sleeve (1) to rotate relative to the tube body in its own axial direction so that the cutter (3) can process annular grooves on the side wall of the tube body. S400. After the annular groove is processed, the pressure applied to the drive sleeve (4) is released. The first elastic element (5) drives the drive sleeve (4) to move upward relative to the base sleeve (1). The second elastic element (6) drives the first guide sleeve (2) to move away from the central axis of the base sleeve (1) so that the cutter (3) retracts from the processing groove (11).

Images