A pipe joint honing clamp

Abstract

The application provides a round pipe joint honing clamp and relates to the field of fluid honing clamps. The round pipe joint honing clamp comprises a device shell, two honing assemblies arranged in an up-down mode, two groups of hydraulic assemblies, a correction assembly and an extension assembly. One end of the hydraulic assembly is mounted in the inner wall of the device shell, the other end of the hydraulic assembly is connected with the corresponding honing assembly, the correction assembly is arranged between the two honing assemblies, one end of the extension assembly is connected with the honing assembly above, and the other end of the extension assembly is connected with the correction assembly. The round pipe joint honing clamp can be inserted into a stepped ring and be in the most suitable stepped ring by using the correction assembly and using repeated inertia and making the round pipe joint rotate autonomously, so that the sealing degree is higher during later honing. The clamp is suitable for round pipe joints with various diameters, the conversion efficiency is higher during automatic machining, and the good sealing performance can be ensured during efficient honing.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fluid honing fixture, in particular to a round pipe joint honing fixture. BACKGROUND

[0002] The current round pipe joint polishing device is generally: using a manual polisher or a grinder semi-automatically, rotating type grinding along the inner wall of the joint, the actual hole after polishing The spiral pattern does not meet the fluid linearity.

[0003] Extrusion honing is to use semi-fluid abrasive to grind back and forth through the surface of the processed part under certain pressure to achieve deburring and finishing of the part. The characteristics of extrusion honing are high efficiency, good quality, simple equipment, convenient operation, and it is an ideal process technology for improving the surface quality of the plastic profile extrusion die forming die.

[0004] Extrusion honing is to press the mold plate tightly between the upper and lower medium cylinders of the honing machine through the clamp device to form a closed processing area, and then the piston is reciprocated up and down to push the medium abrasive through the mold plate cavity area. The surface of the mold plate cavity is polished by the abrasive. Because this process uses semi-fluid abrasive, the clamp device must be designed according to the structure characteristics of different parts during polishing, so that the abrasive can accurately and reliably pass through the polishing surface. Therefore, the application result of this technology depends largely on the design of the clamp device, and the quality of the clamp device directly affects the polishing quality of the mold plate.

[0005] However, when processing the inner wall of the round pipe, the clamp needs to be replaced repeatedly due to the different diameters of the inner wall of the round pipe. After the clamp is clamped once, it needs to maintain the sealing property to make the abrasive pass through the inner wall of the pipe better. The sealing property of the multipurpose clamp is insufficient, and it cannot meet the requirement of rapid clamping. Therefore, when processing round pipe joints of different specifications in batches, the replacement of the clamp limits the processing rate. SUMMARY

[0006] In view of the defects of the prior art, the present application provides a round pipe joint honing fixture, which solves the problems raised in the above background.

[0007] To achieve the above purpose, the present application realizes the following technical scheme: a round pipe joint honing fixture, comprising a device shell, two upper and lower distributed honing assemblies and two groups of hydraulic assemblies, one end of the hydraulic assembly is installed in the inner wall of the device shell, the other end of the hydraulic assembly is connected with the corresponding honing assembly, and the honing assembly further comprises a correction assembly and an extension assembly, the correction assembly is arranged between the two honing assemblies, one end of the extension assembly is connected with the upper honing assembly, and the other end is connected with the correction assembly.

[0008] The correction assembly comprises a wheel disc with a hollow structure and a telescopic transmission rod, the wheel disc is used for clamping and rotating the pipe joint, and one end of the telescopic transmission rod is fixed with the wheel disc;

[0009] The honing assembly comprises a placement clamp, one end of the telescopic transmission rod away from the wheel disc is fixed with the bottom surface of the placement clamp of the upper honing assembly, so that the torque can be buffered and transmitted, a plurality of through holes A are arranged on the placement clamp, a stepped ring is fixedly arranged in the bottom end of any one of the through holes A, and the pipe joint can be sealed when rotating and approaching the stepped ring.

[0010] Preferably, the honing assembly further comprises a sealing ring and an abrasive compression cavity, the sealing ring is fixed on the placement clamp, and the abrasive compression cavity is connected with the sealing ring.

[0011] Preferably, the upper honing assembly is in sealing rotary connection with the sealing ring through the abrasive compression cavity, and the lower honing assembly is in sealing fixed connection with the sealing ring through the abrasive compression cavity.

[0012] Preferably, one end of the through hole A inside the sealing ring is in a flared structure, and the inner diameter of one side of the stepped ring close to the sealing ring gradually decreases.

[0013] Preferably, the hydraulic assembly comprises a hydraulic cylinder and a fixed plate, the fixed plate is arranged in the equipment shell and can slide up and down in the equipment shell, the fixed end of the hydraulic cylinder is fixed with the inner wall of the equipment shell, the movable end of the hydraulic cylinder is fixedly connected with the fixed plate, and the abrasive compression cavity is fixedly connected with the fixed plate.

[0014] Preferably, the correction assembly further comprises two symmetrically distributed clamping sleeves, the wheel disc is clamped between the two clamping sleeves and is in rotary connection with the two clamping sleeves, the bottom of each clamping sleeve is fixedly provided with a motor, a gear is arranged in the clamping sleeve, the outer ring of the wheel disc is provided with a gear slot, the output shaft of the motor is connected with the gear, the motor drives the wheel disc to rotate back and forth through the gear meshing with the gear slot, the upper end and the lower end of the wheel disc are both provided with corresponding through holes B, the through holes B are in communication with the internal cavities, and the positions of the through holes B in the wheel disc are both provided with clamping structures.

[0015] Preferably, the clamping structure comprises two triangular plates and three electric rubber wheels, the two triangular plates are arranged in the wheel disc in a vertically distributed manner, the middle positions of the triangular plates are both provided with through holes C corresponding to the through holes B, the three electric rubber wheels are arranged at the three corner positions of the triangular plates, the three corners of any one of the triangular plates are both provided with straight-line sliding grooves facing the center of the through holes C, and the wheel shafts of the electric rubber wheels are arranged in the straight-line sliding grooves and can slide along the straight-line sliding grooves.

[0016] The electromagnetic extender and the elastic device are fixedly installed at two ends of the triangular plate, the elastic device is installed at the middle position of the wheel shaft, the output end of the electromagnetic extender is fixed to the middle position of the elastic device, the electromagnetic extender can push the elastic device to make the wheel shaft slide along the straight sliding groove and make the electric rubber wheel clamp the pipe joint, the rotation of the electric rubber wheel can drive the pipe joint to rotate in the wheel disc, and the wheel shaft starts to retreat to the original position due to the reaction force of the elastic device after the electromagnetic extender is powered off.

[0017] Preferably, the telescopic assembly comprises two electric telescopic rods, one end of the electric telescopic rod is fixed to the fixed plate of the upper honing assembly, and the other end is fixed to the clamping sleeve.

[0018] Preferably, the automatic feeder comprises a tray, the tray is provided with a plurality of insertion holes corresponding to the number of through holes A, and the pipe joint is placed on the tray.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] The pipe joint honing clamp uses the correcting assembly to first grab the pipe joint that needs to be fluid honed, and then cooperates the pipe joint with the honing assembly. In this process, the pipe joint is automatically rotated by repeated inertia, so that it can be inserted into the stepped ring and be in the most suitable stepped ring, so that the sealing degree is higher during later honing. When facing different specifications of pipe joints, the diameter of the most suitable stepped ring can always be found. The clamp is suitable for pipe joints of various diameters, and the conversion efficiency is high during automatic processing, and good sealing can be ensured during high-efficiency honing.

[0021] The pipe joint honing clamp is provided with a hydraulic assembly. After the pipe joint is aligned and inserted into the clamp, the two hydraulic assemblies can fasten the upper and lower ends of the pipe joint, so that it is firmly in contact with the stepped ring. When high-pressure fluid abrasive is applied subsequently, the two ends of the pipe joint will not leak abrasive and will not scratch the outer wall of the part.

[0022] The pipe joint honing clamp is provided with a telescopic transmission rod. When the wheel disc swings, it can apply inertia to the pipe joint, so that when it is inserted into the through hole A, it will be misaligned with the stepped ring. However, the stepped ring will have a follow-up effect under the drive of the clamp, so the misalignment gap is very small. In combination with the self-rotation of the pipe joint workpiece itself, it is easier to spin into the appropriate inner hole of the stepped ring, and the sealing and clamping speed is fast. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The figure is a structural schematic diagram of the present application;

[0024] Figure 2 The figure is a structural exploded view of the present application;

[0025] Figure 3 It is the internal structure diagram of the device shell of the application;

[0026] Figure 4 It is the structure diagram of the upper and lower honing assemblies of the application;

[0027] Figure 5 It is the structure exploded view of the honing assembly of the application;

[0028] Figure 6 It is the internal structure diagram of the placement clamp of the honing assembly of the application;

[0029] Figure 7 It is the structure diagram of the correction assembly and the honing assembly of the application;

[0030] Figure 8 It is the structure exploded view of the correction assembly of the application;

[0031] Figure 9 It is the structure diagram of the clamping structure of the application.

[0032] In the figure: 1, device shell; 2, honing assembly; 201, placement clamp; 202, through hole A; 203, stepped ring; 204, closed ring; 205, abrasive compression cavity; 3, hydraulic assembly; 301, hydraulic cylinder; 302, fixed plate; 4, correction assembly; 401, wheel disc; 402, telescopic transmission rod; 403, clamping sleeve; 404, motor; 405, gear; 406, gear slot; 407, through hole B; 408, clamping structure; 4081, triangular plate; 4082, electric rubber wheel; 4083, through hole C; 4084, straight line sliding slot; 4085, wheel shaft; 4086, electromagnetic extender; 4087, elastic device; 5, telescopic assembly; 501, electric telescopic rod; 6, automatic feeder; 601, tray. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work are within the protection scope of the application.

[0034] It should be noted that all directional indications in the embodiments of the application are only used to explain the relative position relationship, movement condition and the like between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0035] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0037] like Figures 1-9 As shown, a honing fixture for round pipe joints includes a housing 1, two honing assemblies 2 arranged vertically, and two sets of hydraulic assemblies 3. One end of each hydraulic assembly 3 is installed in the inner wall of the housing 1, and the other end is connected to the corresponding honing assembly 2. The fixture also includes a straightening assembly 4 and a telescopic assembly 5. The straightening assembly 4 is positioned between the two honing assemblies 2. One end of the telescopic assembly 5 is connected to the upper honing assembly 2, and the other end is connected to the straightening assembly 4. The straightening assembly 4 includes a hollow wheel 401 and a telescopic transmission rod 402. The wheel 401 clamps the round pipe joint and rotates it, and one end of the telescopic transmission rod 402 is fixed to the wheel 401. The honing assembly 2 includes a placement clamp 201. The end of the telescopic transmission rod 402 away from the wheel 401 is fixed to the bottom surface of the placement clamp 201 of the honing assembly 2 above, which can realize torsional buffering and power transmission. The placement clamp 201 is provided with several through holes A202 that pass through vertically. A stepped ring 203 is fixedly installed inside the bottom end of any one of the through holes A202. The round pipe joint can be sealed when it rotates and approaches the stepped ring 203.

[0038] The equipment shell 1 provides rigidity and structural support, made of heavy steel to resist the tremendous hydraulic pressure generated during processing. The upper and lower hydraulic assemblies 3 are fixedly installed on the inner top wall and the inner bottom wall of the equipment shell 1 respectively, and the upper and lower honing assemblies 2 are controlled by the hydraulic assemblies 3 to approach each other, so that the fixture 201 and the through hole A 202 cooperate with the workpiece to guide the abrasive medium to flow accurately through the area to be processed, and the fixture 201 itself needs to have sufficient strength to withstand high pressure.

[0039] The stepped ring 203 is installed at the bottom of the through hole A 202, which can control the flow of fluid through the area to be processed and prevent leakage of the medium.

[0040] The telescopic transmission rod 402 is a hollow folding column made of rubber, which can be folded under pressure and unfolded when stretched. It can maintain power transmission in various states of folding, no force, and stretching, but has a certain buffering capacity in the initial stage of power transmission.

[0041] The equipment shell 1 also has a hydraulic power unit, a control system, and a cooling system installed therein.

[0042] In an alternative embodiment, the honing assembly 2 further comprises a sealing ring 204 and an abrasive compression chamber 205, the sealing ring 204 is fixed on the fixture 201, and the abrasive compression chamber 205 is connected with the sealing ring 204.

[0043] In this embodiment, the abrasive compression chamber 205 is used to store abrasive medium, which is the material that actually performs cutting / polishing and is the core of the process. It is a semi-solid, plastic, and viscoelastic substance, usually mixed with a base carrier and abrasive particles. The abrasive compression chamber 205 includes a medium cylinder and a piston for storing abrasive medium and pushing the medium to circulate through the reciprocating movement of the piston driven by the hydraulic system, forcing the medium to pass through the clamped workpiece.

[0044] In an alternative embodiment, the upper honing assembly 2 has a sealing rotary connection between the abrasive compression chamber 205 and the sealing ring 204, and the lower honing assembly 2 has a sealing fixed connection between the abrasive compression chamber 205 and the sealing ring 204.

[0045] In this embodiment, when the upper fixture 201 rotates, the sealing ring 204 and the abrasive compression chamber 205 can rotate relative to each other, and a high-pressure seal is made between them, so there is no problem of leaking medium.

[0046] In an alternative embodiment, the end of the through hole A 202 inside the sealing ring 204 is a flared structure, and the inner diameter of the side of the stepped ring 203 close to the sealing ring 204 gradually decreases.

[0047] In this embodiment, the trumpet structure of the through hole A202 is used to realize better entry of the medium, and the stepped ring 203 of the tapered structure is used to match the circular pipe joint of different diameters.

[0048] In an alternative embodiment, the hydraulic assembly 3 comprises a hydraulic cylinder 301 and a fixed plate 302, the fixed plate 302 is arranged in the equipment shell 1 and can slide up and down along the inside thereof, the fixed end of the hydraulic cylinder 301 is fixed with the inner wall of the equipment shell 1, and the movable end is fixedly connected with the fixed plate 302, and the abrasive compression cavity 205 is fixedly connected with the fixed plate 302.

[0049] In this embodiment, the fixed plate 302 adopts a slide rail restriction and can slide accurately along the equipment shell 1, and the fixed plate 302 can be controlled to move along the above path when the hydraulic cylinder 301 is stretched or contracted.

[0050] In an alternative embodiment, the correction assembly 4 further comprises two symmetrically distributed sleeves 403, the wheel disc 401 is clamped between the two sleeves 403 and is rotationally connected with the two sleeves 403, the bottom of each sleeve 403 is fixedly installed with a motor 404, a gear 405 is installed in the sleeve 403, the outer ring of the wheel disc 401 is provided with a tooth groove 406, the output shaft of the motor 404 is connected with the gear 405, the motor 404 drives the wheel disc 401 to rotate back and forth through the meshing of the gear 405 and the tooth groove 406, and corresponding through holes B 407 are formed in the upper and lower ends of the wheel disc 401, the through holes B 407 are communicated with the internal cavities, and clamping structures 408 are installed in the wheel disc 401 at positions corresponding to the through holes B 407.

[0051] In this embodiment, the upper and lower surfaces of the wheel disc 401 are provided with ball ways, the sleeves 403 are matched therewith, and balls are arranged in the interiors, so that the wheel disc 401 can rotate with low friction relative to the two wheel discs 401, the two sleeves 403 can also have the effect of erecting the wheel disc 401, the through holes B 407 are the same as the through holes A 202 and are basically the largest diameter specifications of the processed circular pipe joints, and generally, there is a gap when the circular pipe joint is inserted.

[0052] In an alternative embodiment, the clamping structure 408 comprises two triangular plates 4081 and three electric rubber wheels 4082, the two triangular plates 4081 are arranged in the wheel disc 401 in a vertically distributed manner and are fixed therein, a through hole C 4083 is arranged at the middle position of each triangular plate 4081, the through hole C 4083 corresponds to the through hole B 407, the three electric rubber wheels 4082 are arranged at the three corner positions of the triangular plate 4081, a straight-line sliding groove 4084 is formed in each triangular plate 4081 towards the center of the through hole C 4083, and the wheel shaft 4085 of the electric rubber wheel 4082 is arranged in the straight-line sliding groove 4084 and can slide linearly along the straight-line sliding groove 4084.

[0053] Further comprising an electromagnetic extender 4086 and an elastic device 4087, both ends of the electromagnetic extender 4086 and the elastic device 4087 are fixedly installed on the triangular plate 4081, the elastic device 4087 is installed at the middle position of the wheel shaft 4085, the output end of the electromagnetic extender 4086 is fixed with the middle position of the elastic device 4087, the electromagnetic extender 4086 is powered to push the elastic device 4087 to make the wheel shaft 4085 slide along the linear sliding groove 4084 and make the electric rubber wheel 4082 clamp the pipe joint, the rotation of the electric rubber wheel 4082 can drive the pipe joint to rotate in the wheel disc 401, and after power off, due to the reaction force of the elastic device 4087, the wheel shaft 4085 starts to retreat to the original position.

[0054] In the embodiment, the electromagnetic extender 4086 is a sheet-shaped structure, which is a device driven by electromagnetic principle, has an ultra-thin flexible structure, and can produce stretching or bending deformation. Based on the driving of Lorentz force, the terminal can be pushed out or retracted. The elastic device 4087 is made of composite metal material, the two ends are fixed on the triangular plate 4081 by using pins, and the middle position can freely move. While the middle position freely moves, the two ends are elastically deformed, and the original shape is restored when there is no force. In the process of long-term and high-frequency use, metal fatigue is basically not generated.

[0055] The outer ring of the electric rubber wheel 4082 is provided with an anti-skid groove rubber wheel, and the inside is provided with a hub motor. When powered, the outer rubber wheel will rotate relative to the wheel shaft 4085. The power supply of all the triangular plates 4081 on the wheel disc 401 is concentrated and the cable is protected by a flexible protection tube. When the wheel disc 401 moves back and forth, the cable can still realize power supply to the internal components.

[0056] In an optional embodiment, the telescopic assembly 5 comprises two electric telescopic rods 501, one end of the electric telescopic rod 501 is fixed with the fixed plate 302 of the upper honing assembly 2, and the other end is fixed with the clamping sleeve 403.

[0057] In the embodiment, the telescopic assembly 5 preferably uses an electric telescopic rod 501, which is used to transfer the pipe joint to the placing clamp 201 and does not need a large pushing force. The electric telescopic rod 501 can realize rapid deployment and improve the processing efficiency.

[0058] In an optional embodiment, an automatic feeder 6 is further included, the automatic feeder 6 comprises a tray 601, the tray 601 is provided with a plurality of insertion holes corresponding to the number of through holes A202, and the insertion holes are used to place the pipe joint.

[0059] In the embodiment, the automatic feeder 6 is used in cooperation with a servo system and a mechanical arm to automatically feed the clamp.

[0060] In use, a plurality of groups of pipe fittings are sent to the bottom of the wheel disc 401 by using the automatic feeder 6, and then the telescopic assembly 5 controls the wheel disc 401 to move downward until all the pipe fittings are inserted into the through holes B 407 and penetrate through the wheel disc 401, and then the clamping structure 408 operates to clamp the pipe fittings, and then the telescopic assembly 5 controls the wheel disc 401 to move close to the placement clamp 201 above, after the pipe fittings are inserted into the through holes A 202, the motor 404 operates to drive the wheel disc 401 to rotate back and forth, in this process, the clamping structure 408 starts to loosen and clamp continuously, and the pipe fittings will maintain concentric with the through holes B 407 under the action of inertia and the clamping of each group of three motorized rubber wheels 4082, and then with the through holes A 202, and then when inserted into the stepped ring 203, it is easier to maintain concentric with the stepped ring 203, because the pipe fittings are in a rotating state when inserted into the stepped ring 203, so the most suitable stepped ring can be inserted;

[0061] Then, the upper and lower two hydraulic assemblies 3 start to expand, and the two placement clamps 201 start to move close to each other, because the pipe fittings have been connected with the placement clamp 201 above, and the wheel disc 401 limits the pipe fittings, so the placement clamp 201 below can also be connected according to the connection form of the placement clamp 201 above when moving up, so that the upper and lower ends of the pipe fittings are fixed and sealed.

[0062] Finally, the upper and lower two abrasive compression cavities 205 can realize the circulation of fluid abrasives in the pipe fittings, and realize fluid polishing of the inner wall of the pipe fittings, and the inner wall of the polished pipe fittings is more consistent with the fluid linearity.

[0063] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present application.

[0064] In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, also not within the scope of protection required by the present application.

[0065] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A honing fixture for round pipe joints, comprising a housing (1), characterized in that: It also includes two honing assemblies (2) distributed vertically and two sets of hydraulic assemblies (3). One end of the hydraulic assembly (3) is installed in the inner wall of the equipment housing (1), and the other end of the hydraulic assembly (3) is connected to the corresponding honing assembly (2). It also includes a straightening assembly (4) and a telescopic assembly (5). The straightening assembly (4) is located between the two honing assemblies (2), and one end of the telescopic assembly (5) is connected to the upper honing assembly (2), and the other end is connected to the straightening assembly (4). The correction component (4) includes a wheel (401) with a hollow internal structure and a telescopic transmission rod (402). The wheel (401) is used to clamp the round pipe joint and rotate it. One end of the telescopic transmission rod (402) is fixed to the wheel (401). The honing assembly (2) includes a placement fixture (201). One end of the telescopic transmission rod (402) away from the wheel (401) is fixed to the bottom surface of the placement fixture (201) of the honing assembly (2) above, which can achieve torsional buffering and power transmission. The placement fixture (201) is provided with several through holes A (202) that run vertically through each other. A stepped ring (203) is fixedly installed inside the bottom end of any one of the through holes A (202). The round pipe joint can be sealed when it rotates and approaches the stepped ring (203).

2. The honing fixture for round pipe joints according to claim 1, characterized in that: The honing assembly (2) also includes a sealing ring (204) and an abrasive compression chamber (205). The sealing ring (204) is fixed on the placement fixture (201), and the abrasive compression chamber (205) is connected to the sealing ring (204).

3. The honing fixture for round pipe joints according to claim 2, characterized in that: The upper honing assembly (2) has its abrasive compression chamber (205) sealed and rotatably connected to the sealing ring (204), and the lower honing assembly (2) has its abrasive compression chamber (205) sealed and fixedly connected to the sealing ring (204).

4. The honing fixture for round pipe joints according to claim 3, characterized in that: The end of the through hole A (202) inside the closed ring (204) has a flared structure, and the inner diameter of the stepped ring (203) gradually decreases on the side close to the closed ring (204).

5. The honing fixture for round pipe joints according to claim 4, characterized in that: The hydraulic assembly (3) includes a hydraulic cylinder (301) and a fixed plate (302). The fixed plate (302) is located in the equipment housing (1) and can slide up and down along its interior. The fixed end of the hydraulic cylinder (301) is fixed to the inner wall of the equipment housing (1), and its movable end is fixedly connected to the fixed plate (302). The abrasive compression chamber (205) is fixedly connected to the fixed plate (302).

6. The honing fixture for round pipe joints according to claim 5, characterized in that: The correction component (4) also includes two symmetrically distributed ferrules (403). The wheel (401) is clamped between the two ferrules (403) and rotatably connected to them. A motor (404) is fixedly installed at the bottom of each ferrule (403). A gear (405) is installed inside the ferrule (403). The outer ring of the wheel (401) is provided with a tooth groove (406). The output shaft of the motor (404) is connected to the gear (405). The motor (404) makes the wheel (401) rotate back and forth by meshing the tooth groove (406) with the gear (405). The upper and lower ends of the wheel (401) are provided with corresponding through holes B (407). The through holes B (407) are connected to the internal cavity. A clamping structure (408) is installed in the wheel (401) at the position corresponding to the through holes B (407).

7. The honing fixture for round pipe joints according to claim 6, characterized in that: The clamping structure (408) includes two triangular plates (4081) and three electric rubber wheels (4082). The two triangular plates (4081) are distributed vertically and fixed in the wheel disk (401). Each triangular plate (4081) has a through hole C (4083) in the middle position. The through hole C (4083) corresponds to the through hole B (407). The three electric rubber wheels (4082) are distributed at the three corners of the triangular plates (4081). Each of the three corners of any triangular plate (4081) has a straight groove (4084) facing the center of the through hole C (4083). The axle (4085) of the electric rubber wheel (4082) is located in the straight groove (4084) and can slide along it in a straight line. It also includes an electromagnetic extender (4086) and an elastic device (4087). The two ends of the electromagnetic extender (4086) and the elastic device (4087) are fixedly installed on the triangular plate (4081). The middle position of the elastic device (4087) is installed on the wheel axle (4085). The output end of the electromagnetic extender (4086) is fixed to the middle position of the elastic device (4087). When the electromagnetic extender (4086) is energized, it can push the elastic device (4087) to make the wheel axle (4085) slide along the straight slide groove (4084) and make the electric rubber wheel (4082) clamp the round pipe joint. The rotation of the electric rubber wheel (4082) can drive the round pipe joint to rotate in the wheel disc (401). After the power is cut off, due to the reaction force of the elastic device (4087), the wheel axle (4085) begins to return to its original position.

8. The honing fixture for round pipe joints according to claim 7, characterized in that: The telescopic assembly (5) includes two electric telescopic rods (501), one end of which is fixed to the fixing plate (302) of the upper honing assembly (2), and the other end is fixed to a retaining sleeve (403).

9. The honing fixture for round pipe joints according to any one of claims 1-8, characterized in that: It also includes an automated feeder (6), which includes a tray (601) with a number of insertion holes corresponding to the number of through holes A (202) for placing round pipe fittings.

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