A residual stress regulation tool

Abstract

The application discloses a residual stress regulation tool, relates to the technical field of residual stress regulation, and comprises a conveying rod, a guide mechanism and a cylindrical guide sleeve are sequentially arranged on the conveying rod from one side to the other side, a fixing mechanism is arranged outside the guide sleeve, a top-tight fitting mechanism is arranged on the outer periphery of the connecting seat, and an exciter and an excitation wedge are respectively detachably installed on the quick assembly mechanism. The tool can be quickly, conveniently and stably installed on a pipe to be regulated, thereby providing stable support for subsequent residual stress regulation work, and accurate residual stress regulation can be realized on the deep position of the inner wall of the pipe, the corresponding position of the inner wall of the pipe is regulated in residual stress, and the fatigue resistance and brittle fracture resistance of the inner wall of the pipe are effectively guaranteed. Moreover, the excitation wedge can be adapted and replaced according to the inner diameter of the pipe, and the splitting and assembling process is simple and easy to operate, and the learning cost is low.

Description

Technical Field

[0001] This invention relates to the field of residual stress control technology, specifically to a residual stress control tooling. Background Technology

[0002] During the machining or forming of mechanical components, residual stresses remain in the deformed body due to non-uniform stress, strain, temperature, and microstructure inhomogeneities. Residual stresses significantly impact the reliability of mechanical components. Their presence not only reduces the static and fatigue strength of the components, leading to manufacturing defects such as deformation and cracking during production and use, but also affects the material's fatigue resistance and brittle fracture resistance during post-manufacturing stress release. Therefore, controlling residual stress is crucial and of paramount importance for improving equipment safety.

[0003] The prior art CN 115161572 B discloses a device and method for adjusting residual stress in a complex-shaped titanium alloy tube component. Although this invention can adjust the residual stress in the tube component through a high-energy sound beam exciter and reduce the deformation of the tube component caused by residual stress, this invention can only regulate the residual stress on the outer wall of the tube. However, a certain amount of residual stress will also be formed on the inner wall of the tube during processing and production. Relying solely on external regulation cannot effectively remove most of the residual stress inside the tube. The fatigue resistance and brittle fracture resistance of the tube cannot be effectively guaranteed. Therefore, how to regulate the residual stress on the inner wall of the tube is a technical problem that urgently needs to be solved. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a residual stress control fixture. This fixture can be quickly, conveniently, and stably installed on the pipe fitting to be controlled, providing stable support for subsequent residual stress control work and ensuring its proper operation. It also enables precise control of residual stress at deep locations within the pipe fitting's inner wall, effectively protecting the pipe fitting's fatigue resistance and brittle fracture resistance. Furthermore, the excitation wedge can be adapted to the pipe fitting's inner diameter, and the disassembly and assembly process is simple and easy to operate with low learning costs. These advantages allow the fixture to better adapt to pipe fittings of various inner diameters, thus solving the problems mentioned in the background art.

[0005] To achieve the above-mentioned goal of quickly, conveniently, and stably installing the tooling on the pipe fitting to be adjusted, providing stable support for subsequent residual stress adjustment work, ensuring the normal progress of subsequent residual stress adjustment work, and enabling precise adjustment of residual stress at deep positions on the inner wall of the pipe fitting, as well as residual stress adjustment at corresponding positions on the inner wall of the pipe fitting, effectively ensuring the fatigue resistance and brittle fracture resistance of the inner wall of the pipe fitting, and allowing the excitation wedge to be adapted and replaced according to the inner diameter of the pipe fitting, and the disassembly and assembly process is simple and easy to operate with low learning cost, thus enabling the tooling to better adapt to pipe fittings with various inner diameters, the present invention provides the following technical solution: a residual stress adjustment tooling, including a conveying rod, on which a guiding mechanism and a cylindrical guide sleeve are sequentially arranged from one side to the other, the guide sleeve is sleeved and slidably mounted on the outside of the conveying rod, and a fixing mechanism is provided on the outside of the guide sleeve;

[0006] A cylindrical connecting seat is fixedly installed at one end of the conveying rod near the guiding mechanism. A pressing and fitting mechanism is provided on the outer periphery of the connecting seat. A pull shaft is slidably installed inside the conveying rod along its length. One end of the pull shaft passes through the connecting seat, and the outer end of the pull shaft is connected to the pressing and fitting mechanism.

[0007] The outer periphery of the top-tight fitting mechanism is provided with several quick assembly mechanisms. Each quick assembly mechanism is detachably equipped with an exciter and an exciter wedge. The end of the exciter wedge away from the quick assembly mechanism is an inclined arc shape.

[0008] Preferably, the fixing mechanism includes a plurality of fixing rods fixedly installed on the outer periphery of the guide sleeve. The plurality of fixing rods are distributed in a ring shape around the axis of the guide sleeve, and a T-shaped guide groove is formed along the length direction on the side of the fixing rod near the guide mechanism. A slide rod with a T-shaped cross-section is inserted and slidably inserted into the inside of the guide groove along the length direction. A pressure plate is fixedly installed on the outer end of the slide rod. A rectangular through groove communicating with the guide groove is formed on the outer surface of the fixing rod along the length direction. A hollow sleeve rod is fixedly installed on one side of the inner end of the slide rod, and an insert rod is fixedly installed on the other side of the inner end of the slide rod. Both the sleeve rod and the insert rod extend outward to the outside through the through groove, and the outer end of the insert rod is inserted into the inside of the adjacent sleeve rod.

[0009] Preferably, a mounting block is welded to the outer side of one of the slide rods, a fixing bolt is rotatably mounted inside the mounting block, and a fixing nut that is threadedly connected to the fixing bolt is welded to the outer side of the fixing rod.

[0010] Preferably, the guiding mechanism includes several support rods fixedly mounted on the conveying rod. The support rods are arranged in a ring shape around the axis of the pull shaft. The inside of the support rods is hollow, and an adjusting rod is slidably installed inside each of the support rods. The adjusting rods extend outward from the support rods, and rollers are rotatably installed at the outer ends of the support rods.

[0011] Preferably, the adjusting rod has a plurality of adjusting holes extending along the width direction, and the plurality of adjusting holes are arranged in a linear array along the length direction of the adjusting rod. The plurality of supporting rods each have a plurality of threaded holes extending along the width direction, and the plurality of threaded holes are arranged in a linear array along the length direction of the supporting rod. A limit bolt is installed in the internal thread of one of the threaded holes, and the limit bolt is inserted into the interior of the adjusting hole.

[0012] Preferably, the upper surface of the conveying rod is provided with a scale along the length direction, and a locking nut is welded to the outer surface of the guide sleeve. A locking bolt is installed inside the locking nut along the radial thread of the guide sleeve. The locking bolt is inserted into the guide sleeve, and the inner end of the locking bolt abuts against the conveying rod.

[0013] Preferably, the top-tight fitting mechanism includes several guide rods fixedly installed on the connecting seat. The guide rods are arranged in a circular array around the axis of the connecting seat. The inside of each guide rod is hollow with one side and the outer end open. A top rod is inserted and slidably inserted into the inside of the guide rod along its length. The top rod extends outward from the guide rod. A quick assembly mechanism is fixedly installed at the outer end of the top rod. A transmission rod is rotatably installed on one side of the top rod via a rotating shaft. The end of the transmission rod away from the top rod is rotatably connected to a pull shaft via a rotating shaft.

[0014] Preferably, a tensioning bolt is fixedly provided at the end of the pull shaft away from the transmission rod, the tensioning bolt extends outward from the conveying rod, and a tensioning nut is installed on the external thread of the tensioning bolt.

[0015] Preferably, the quick assembly mechanism includes a mounting base. Two symmetrically distributed buttons are disposed on the outside of the mounting base. Each button is inserted into the interior of the mounting base, and a return spring is fixedly installed at its inner end. The end of the return spring furthest from the button is fixedly connected to the inner surface of the mounting base. A pair of symmetrically distributed pressure rods are rotatably mounted on the inner end of the button outside the return spring via a rotating shaft. These pressure rods are V-shaped. A pair of symmetrically distributed sliding plates are slidably mounted inside the mounting base. The sliding direction of the sliding plates is perpendicular to the sliding direction of the buttons. One end of each pressure rod is rotatably connected to an adjacent sliding plate via a rotating shaft. Two inserts are fixedly disposed on each sliding plate, with beveled ends on the outer ends of the inserts.

[0016] Preferably, the exciter is provided with a transmitter end that is inserted into the mounting base, the exciter wedge is provided with a connecting block that is inserted into the mounting base, the outer end of the connecting block is provided with a connecting hole adapted to the transmitter end, and the transmitter end is inserted into the interior of the connecting hole. The outer surfaces of the transmitter end and the connecting block are provided with insertion holes adapted to the insertion blocks, and the two insertion blocks on each sliding plate are respectively inserted into the insertion holes on the transmitter end and the connecting block.

[0017] Compared with the prior art, the present invention provides a residual stress adjustment tooling, which has the following beneficial effects:

[0018] 1. This residual stress control fixture, through the setting of the fixing mechanism, can be installed on the pipe to be controlled, providing stable support for subsequent residual stress control work. It can effectively prevent unstable shaking between the excitation wedge and the inner wall of the pipe during control, ensuring the normal progress of residual stress control work. In addition, the mechanism is simple and convenient to install and operate, which can improve the convenience and ease of use of the fixture.

[0019] 2. This residual stress adjustment fixture, through the coordinated arrangement of guide sleeve, locking bolt, scale, and guiding mechanism, can push the exciter and excitation wedge into the depth of the pipe to be adjusted by pushing the conveying rod. Moreover, the conveying distance of the exciter and excitation wedge can be determined by observing the position of the scale on the guide sleeve, thereby achieving precise adjustment of residual stress at the deep position of the inner wall of the pipe. During the conveying process, the rollers on the guiding mechanism can roll against the inner wall of the pipe, thereby automatically centering and guiding the exciter and excitation wedge, ensuring the stability of the conveying process and preventing deviation.

[0020] 3. This residual stress control fixture, through the combination of a clamping and fitting mechanism, a tension nut, and a tension bolt, can fully couple the arc end of the excitation wedge with the inner wall of the pipe. Then, the exciter is activated, and the ultrasonic waves generated by the exciter can be transmitted into the inner wall of the pipe through the excitation wedge, thereby controlling the residual stress at the corresponding position on the inner wall of the pipe and effectively ensuring the fatigue resistance and brittle fracture resistance of the inner wall of the pipe.

[0021] 4. This residual stress control fixture, through the setting of a quick assembly mechanism, can achieve the purpose of rapid disassembly and assembly of the excitation wedge and the exciter. By adapting and replacing the excitation wedge according to the inner diameter of the pipe fitting, the disassembly and assembly process is simple and easy to operate with low learning cost. Thus, this fixture can better adapt to pipe fittings with various inner diameters and control the residual stress of pipe fittings with various inner diameters, which can improve the practicality and usability of the fixture to a certain extent. Attached Figure Description

[0022] Figure 1 This is a frontal three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the front view of the structure after the invention is installed;

[0024] Figure 3 This is a schematic diagram of the rear side view of the structure after the present invention is installed;

[0025] Figure 4 This is a side view of the three-dimensional structure of the fixing mechanism of the present invention;

[0026] Figure 5 This is a frontal three-dimensional partial structural diagram of the fixing mechanism of the present invention;

[0027] Figure 6 This is a side view of the three-dimensional structure of the guiding mechanism of the present invention;

[0028] Figure 7 This is a partial frontal sectional view of the guiding mechanism of the present invention;

[0029] Figure 8 This is a partial structural schematic diagram of the side cross-section of the present invention;

[0030] Figure 9 This is a schematic diagram of a partial cross-sectional view of the present invention.

[0031] Figure 10 This is a frontal cross-sectional view of the rapid assembly mechanism of the present invention;

[0032] Figure 11 This is a side sectional view of the rapid assembly mechanism of the present invention;

[0033] Figure 12 This is a schematic diagram of the three-dimensional structure of a partially exploded part inside the rapid assembly mechanism of the present invention.

[0034] In the diagram: 1. Conveying rod; 2. Guiding mechanism; 201. Support rod; 202. Threaded hole; 203. Adjusting rod; 204. Adjusting hole; 205. Limiting bolt; 206. Roller; 3. Guide sleeve; 4. Fixing mechanism; 401. Fixing rod; 402. Guide groove; 403. Slide rod; 404. Pressure plate; 405. Mounting block; 406. Fixing nut; 407. Fixing bolt; 408. Through groove; 409. Sleeve rod; 4010. Insert rod; 5. Tightening and fitting mechanism; 501. Transmission rod; 502. Guide rod; 503. Top rod; 6. Quick assembly mechanism; 601. Mounting base; 602. Button; 603. Pressure rod; 604. Sliding plate; 605. Return spring; 606. Insert block; 607. Insertion hole; 7. Exciter; 701. Launching end; 8. Excitation wedge; 801. Connecting block; 802. Connecting hole; 9. Locking bolt; 10. Scale; 12. Connecting base; 13. Pull shaft; 14. Tensioning nut; 15. Tensioning bolt. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] For one embodiment of the present invention, please refer to [link / reference]. Figures 1 to 5 as well as Figure 9 A residual stress regulating tooling includes a conveying rod 1, on which a guide mechanism 2 and a cylindrical guide sleeve 3 are sequentially arranged from one side to the other. The guide sleeve 3 is sleeved and slidably mounted on the outside of the conveying rod 1, and a fixing mechanism 4 is provided on the outside of the guide sleeve 3.

[0037] Several quick assembly mechanisms 6 are provided on the outer periphery of the top-tight fitting mechanism 5. Each quick assembly mechanism 6 is detachably equipped with an exciter 7 and an exciter wedge 8. The end of the exciter wedge 8 away from the quick assembly mechanism 6 is an inclined arc shape.

[0038] The fixing mechanism 4 includes several fixing rods 401 fixedly installed on the outer periphery of the guide sleeve 3. The fixing rods 401 are arranged in a ring shape around the axis of the guide sleeve 3. A T-shaped guide groove 402 is opened along the length direction on the side of the fixing rod 401 near the guide mechanism 2. A slide rod 403 with a T-shaped cross section is inserted and slidably inserted into the inside of the guide groove 402 along the length direction. A pressure plate 404 is fixedly installed on the outer end of the slide rod 403. A rectangular through groove 408 communicating with the guide groove 402 is opened along the length direction on the outer surface of the fixing rod 401. A hollow sleeve rod 409 is fixedly installed on one side of the inner end of the slide rod 403, and an insert rod 4010 is fixedly installed on the other side of the inner end of the slide rod 403. Both the sleeve rod 409 and the insert rod 4010 extend outward to the outside through the through groove 408, and the outer end of the insert rod 4010 is inserted into the inside of the adjacent sleeve rod 409.

[0039] One of the slide rods 403 has a mounting block 405 welded to its outer side. A fixing bolt 407 is rotatably mounted inside the mounting block 405, and a fixing nut 406 that is threadedly connected to the fixing bolt 407 is welded to the outer side of the fixing rod 401.

[0040] When residual stress adjustment is required on the pipe fitting to be adjusted, firstly, a coupling medium, such as a sound-transmitting fluid, is applied to the arc surface of the excitation wedge 8. Then, the excitation wedge 8, exciter 7, and guide mechanism 2 are slightly inserted into the pipe fitting to be adjusted via the conveying rod 1. Next, several pressure plates 404 are placed on the end of the pipe fitting to be adjusted, ensuring that the sliding rod 403 is against the end of the pipe fitting to be adjusted. Then, by tightening the mounting block 405 and the fixing bolt 407 on the fixing nut 406, the mounting block 405 presses the sliding rod 403 at that point, causing the sliding rod 403 to slide into the fixing rod 401. At this time, the sliding rod 403, through its outer sleeve rod 409 and insertion rod 4010, drives several other sliding rods 403 to slide synchronously into the fixing rod 401 until the outer pressure plate 404 is pressed against the outer periphery of the end of the pipe fitting to be adjusted. The fixture can then be installed on the pipe fitting to be adjusted, and the subsequent residual stress adjustment work can be carried out.

[0041] As one embodiment of the present invention, please refer to Figure 1 , Figure 2 , Figure 4 , Figure 6 and Figure 7 A residual stress regulating tooling, the guide mechanism 2 includes several support rods 201 fixedly installed on the conveying rod 1. The several support rods 201 are distributed in a ring shape around the axis of the pull shaft 13. The inside of the support rods 201 is hollow, and an adjusting rod 203 is slidably installed inside each of the several support rods 201. The adjusting rod 203 extends outward from the support rod 201, and a roller 206 is rotatably installed at the outer end of the support rod 201.

[0042] The adjusting rod 203 has several adjusting holes 204 that extend through the width direction, and the adjusting holes 204 are arranged in a linear array along the length direction of the adjusting rod 203. Several support rods 201 have several threaded holes 202 that extend through the width direction, and the threaded holes 202 are arranged in a linear array along the length direction of the support rod 201. A limit bolt 205 is installed inside the thread of one of the threaded holes 202, and the limit bolt 205 is inserted into the interior of the adjusting hole 204.

[0043] The upper surface of the conveying rod 1 is marked with a scale 10 along the length direction, and a locking nut is welded to the outer surface of the guide sleeve 3. A locking bolt 9 is installed inside the locking nut along the radial thread of the guide sleeve 3. The locking bolt 9 is inserted into the guide sleeve 3, and the inner end of the locking bolt 9 abuts against the conveying rod 1.

[0044] In practical use, after the fixture is stably installed on the pipe to be adjusted by the fixing mechanism 4, the exciter 7 and the exciter wedge 8 can be conveyed into the depth of the pipe by pushing the conveying rod 1. During this process, the conveying distance of the exciter 7 and the exciter wedge 8 can be judged by observing the position of the scale 10 on the guide sleeve 3, so as to achieve precise control of the residual stress at the deep position of the inner wall of the pipe. Moreover, beforehand, the adjusting rod 203 can be adjusted to slide on the support rod 201 to adjust the circumferential diameter formed by several rollers 206 to be the same as the inner diameter of the pipe. After adjusting the outer wall, the limiting bolt 205 is then tightened. By screwing the adjusting rod 203 into the threaded hole 202 and its corresponding adjusting hole 204, the adjusting rod 203 can be fixed between the adjusting rod and the support rod 201. Therefore, during the process of conveying the exciter 7 and the exciter wedge 8 into the pipe, the roller 206 on the guide mechanism 2 can roll against the inner wall of the pipe, thereby automatically centering and guiding the exciter 7 and the exciter wedge 8, ensuring the stability of the conveying process and preventing deviation. After conveying to the required adjustment position, the locking bolt 9 on the guide sleeve 3 is tightened so that its inner end is pressed tightly against the conveying rod 1, thereby fixing the exciter 7 and the exciter wedge 8 at the depth position of the pipe.

[0045] As one embodiment of the present invention, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 8 and Figure 9 A residual stress regulating tooling, wherein a cylindrical connecting seat 12 is fixedly installed at one end of the conveying rod 1 near the guide mechanism 2, and a pressing and fitting mechanism 5 is provided on the outer periphery of the connecting seat 12; a pull shaft 13 is slidably installed inside the conveying rod 1 along the length direction, one end of the pull shaft 13 passes through the connecting seat 12, and the outer end of the pull shaft 13 is connected to the pressing and fitting mechanism 5.

[0046] The clamping and fitting mechanism 5 includes several guide rods 502 fixedly installed on the connecting seat 12. The guide rods 502 are arranged in a circular array around the axis of the connecting seat 12. The interior of the guide rod 502 is hollow with one side and the outer end open. A top rod 503 is inserted and slidably inserted into the interior of the guide rod 502 along the length direction. The top rod 503 extends outward from the guide rod 502. The quick assembly mechanism 6 is fixedly installed on the outer end of the top rod 503. A transmission rod 501 is rotatably installed on one side of the top rod 503 through a rotating shaft. The end of the transmission rod 501 away from the top rod 503 is rotatably connected to the pull shaft 13 through a rotating shaft.

[0047] A tensioning bolt 15 is fixedly installed at the end of the pull shaft 13 away from the transmission rod 501. The tensioning bolt 15 extends outward from the conveyor rod 1, and a tensioning nut 14 is installed on the external thread of the tensioning bolt 15.

[0048] In practical use, after accurately delivering the exciter 7 and exciter wedge 8 to the desired adjustment point inside the pipe, the pull shaft 13 can be pulled outward synchronously by pulling the tension bolt 15 outward. During this process, the other end of the pull shaft 13 can push the push rod 503 outward along the length direction of the guide rod 502 by pushing the transmission rod 501 until the arc end of the exciter wedge 8 is pressed against the inner wall of the pipe. Then, tighten the tension nut 14 to press it tightly against the end of the conveyor rod 1, thereby pulling the pull shaft 13 closer and fixing it. Moreover, the diameter of the arc end of the exciter wedge 8 is the same as the inner diameter of the pipe. Therefore, the arc end of the exciter wedge 8 can be fully coupled with the inner wall of the pipe in this way. Then, the exciter 7 is started, and the ultrasonic waves generated by the exciter 7 can be transmitted into the inner wall of the pipe through the exciter wedge 8, thereby adjusting the residual stress at the corresponding position of the inner wall of the pipe.

[0049] As one embodiment of the present invention, please refer to Figures 10 to 12 A residual stress regulating tooling, with several quick assembly mechanisms 6 arranged on the outer periphery of the pressing and fitting mechanism 5, and exciter 7 and exciter wedge 8 respectively detachably installed on the quick assembly mechanism 6, the end of the exciter wedge 8 away from the quick assembly mechanism 6 being an inclined arc shape.

[0050] The quick assembly mechanism 6 includes a mounting base 601. Two symmetrically distributed buttons 602 are disposed on the outside of the mounting base 601. The buttons 602 are inserted into the interior of the mounting base 601, and a return spring 605 is fixedly installed at the inner end of each button 602. The end of the return spring 605 away from the button 602 is fixedly connected to the inner surface of the mounting base 601. A pair of symmetrically distributed pressure rods 603 are rotatably mounted on the inner end of the button 602 outside the return spring 605 via a rotating shaft. The pair of pressure rods 603 are V-shaped. A pair of symmetrically distributed sliding plates 604 are slidably mounted inside the mounting base 601. The sliding direction of the sliding plates 604 is perpendicular to the sliding direction of the buttons 602. One end of each pressure rod 603 is rotatably connected to the adjacent sliding plate 604 via a rotating shaft. Two inserts 606 are fixedly disposed on each sliding plate 604, and the outer end of each insert 606 is beveled.

[0051] The exciter 7 is provided with a transmitter 701 that is inserted into the mounting base 601, and the exciter wedge 8 is provided with a connecting block 801 that is inserted into the mounting base 601. The outer end of the connecting block 801 is provided with a connecting hole 802 that is adapted to the transmitter 701, and the transmitter 701 is inserted into the interior of the connecting hole 802. The outer surfaces of the transmitter 701 and the connecting block 801 are provided with insertion holes 607 that are adapted to the insertion blocks 606. The two insertion blocks 606 on each sliding plate 604 are respectively inserted into the insertion holes 607 on the transmitter 701 and the connecting block 801.

[0052] When residual stress adjustment is required on the inner wall of pipe fittings of different diameters, it is only necessary to replace the excitation wedge 8 so that the end arc diameter of the excitation wedge 8 is the same as the inner wall diameter of the pipe fitting. The specific operation is as follows: with the fixture separated from the pipe fitting, press the two buttons 602 on the mounting base 601 inward with two fingers. This will compress the return spring 605 to a certain extent, and the sliding plate 604 can be pushed by the pressure rod 603, which will cause the sliding plate 604 to drive the insertion block 606 away from the connecting block 8. Slide the slide plate 604 in the direction of the connecting block 801 and the transmitter 701, thereby pulling out the two inserts 606 on the sliding plate 604 from the holes 607 on the connecting block 801 and the transmitter 701 respectively. Then, the excitation wedge 8 can be pulled out of the mounting base 601 through the connecting block 801 as needed. Similarly, the exciter 7 can be pulled out of the mounting base 601 through the transmitter 701, thus achieving the purpose of disassembling the excitation wedge 8 and the exciter 7. Then, the excitation wedge 8, which is adapted to the inner diameter of the pipe fitting, is then... The connecting block 801 is inserted into the mounting base 601. In the same way, the exciter 7 is also inserted into the mounting base 601 through the transmitting end 701. At this time, the transmitting end 701 can be inserted into the connecting hole 802. Then, the button 602 is released. At this time, under the action of the rebound force of the return spring 605, the button 602 can be pushed to reset. The button 602 then pulls the sliding plate 604 to reset through the pressure rod 603, so that the two inserts 606 on the sliding plate 604 are respectively inserted into the connecting block 801 and the inserts 607 on the transmitting end 701. The exciter wedge 8 and the exciter 7 can be firmly installed in the mounting base 601. Finally, the purpose of quickly disassembling and assembling the exciter wedge 8 and the exciter 7 is achieved. The exciter wedge 8 can be adapted and replaced according to the inner diameter of the pipe fitting. Moreover, the disassembly and assembly process is simple and easy to operate with low learning cost. This allows the tooling to better adapt to pipe fittings with various inner diameters and to adjust the residual stress of pipe fittings with various inner diameters, which can improve the practicality and usability of the tooling to a certain extent.

[0053] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0054] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A residual stress regulating tooling, comprising a conveying rod, characterized in that: The conveying rod is provided with a guide mechanism and a cylindrical guide sleeve in sequence from one side to the other. The guide sleeve is sleeved and slides on the outside of the conveying rod, and a fixing mechanism is provided on the outside of the guide sleeve. A cylindrical connecting seat is fixedly installed at one end of the conveying rod near the guiding mechanism. A pressing and fitting mechanism is provided on the outer periphery of the connecting seat. A pull shaft is slidably installed inside the conveying rod along its length. One end of the pull shaft passes through the connecting seat, and the outer end of the pull shaft is connected to the pressing and fitting mechanism. The outer periphery of the top-tight fitting mechanism is provided with several quick assembly mechanisms. Each quick assembly mechanism is detachably equipped with an exciter and an exciter wedge. The end of the exciter wedge away from the quick assembly mechanism is an inclined arc shape. The top-fitting mechanism includes several guide rods fixedly installed on the connecting seat. The guide rods are arranged in a circular array around the axis of the connecting seat. The inside of each guide rod is hollow with one side and the outer end open. A top rod is inserted and slidably inserted into the inside of the guide rod along its length. The top rod extends outward from the guide rod. A quick assembly mechanism is fixedly installed at the outer end of the top rod. A transmission rod is rotatably installed on one side of the top rod via a rotating shaft. The end of the transmission rod away from the top rod is rotatably connected to a pull shaft via a rotating shaft. A tensioning bolt is fixedly installed at the end of the pull shaft away from the transmission rod. The tensioning bolt extends outward from the conveyor rod, and a tensioning nut is installed on the external thread of the tensioning bolt.

2. The residual stress adjustment fixture according to claim 1, characterized in that: The fixing mechanism includes several fixing rods fixedly installed on the outer periphery of the guide sleeve. The fixing rods are arranged in a ring shape around the axis of the guide sleeve. A T-shaped guide groove is opened along the length direction on the side of the fixing rod near the guide mechanism. A slide rod with a T-shaped cross-section is inserted and slidably inserted into the inside of the guide groove along the length direction. A pressure plate is fixedly installed at the outer end of the slide rod. A rectangular through groove communicating with the guide groove is opened along the length direction on the outer surface of the fixing rod. A hollow sleeve rod is fixedly installed on one side of the inner end of the slide rod, and an insert rod is fixedly installed on the other side of the inner end of the slide rod. Both the sleeve rod and the insert rod extend outward to the outside through the through groove, and the outer end of the insert rod is inserted into the inside of the adjacent sleeve rod.

3. The residual stress adjustment fixture according to claim 2, characterized in that: One of the slide rods has a mounting block welded to its outer side, a fixing bolt is rotatably mounted inside the mounting block, and a fixing nut that is threadedly connected to the fixing bolt is welded to the outer side of the fixing rod.

4. The residual stress adjustment fixture according to claim 1, characterized in that: The guiding mechanism includes several support rods fixedly mounted on the conveying rod. The support rods are arranged in a ring shape around the axis of the pull shaft. The inside of the support rod is hollow, and an adjusting rod is slidably installed inside each support rod. The adjusting rod extends outward from the support rod, and a roller is rotatably installed at the outer end of the support rod.

5. The residual stress adjustment fixture according to claim 4, characterized in that: The adjusting rod has several adjusting holes that extend through the width direction, and these holes are arranged in a linear array along the length direction of the adjusting rod. Each of the support rods has several threaded holes that extend through the width direction, and these threaded holes are arranged in a linear array along the length direction of the support rod. A limit bolt is installed inside the thread of one of the threaded holes, and the limit bolt is inserted into the adjusting hole.

6. The residual stress adjustment fixture according to claim 1, characterized in that: The upper surface of the conveying rod is marked with graduations along its length, and a locking nut is welded to the outer surface of the guide sleeve. A locking bolt is installed inside the locking nut along the radial thread of the guide sleeve. The locking bolt is inserted into the guide sleeve, and the inner end of the locking bolt abuts against the conveying rod.

7. The residual stress adjustment fixture according to claim 1, characterized in that: The quick assembly mechanism includes a mounting base. Two symmetrically distributed buttons are arranged on the outside of the mounting base. Each button is inserted into the interior of the mounting base, and a return spring is fixedly installed at its inner end. The end of the return spring furthest from the button is fixedly connected to the inner surface of the mounting base. A pair of symmetrically distributed pressure rods are rotatably mounted on the inner end of the button outside the return spring via a rotating shaft. The symmetrically distributed pressure rods are V-shaped. A pair of symmetrically distributed sliding plates are slidably mounted inside the mounting base. The sliding direction of the sliding plates is perpendicular to the sliding direction of the buttons. One end of each pressure rod is rotatably connected to an adjacent sliding plate via a rotating shaft. Two inserts are fixedly arranged on each sliding plate, with beveled ends on the outer ends of the inserts.

8. The residual stress adjustment fixture according to claim 7, characterized in that: The exciter is provided with a transmitter end that is inserted into the mounting base, and the exciter wedge is provided with a connecting block that is inserted into the mounting base. The outer end of the connecting block is provided with a connecting hole that matches the transmitter end, and the transmitter end is inserted into the connecting hole. The outer surfaces of the transmitter end and the connecting block are provided with insertion holes that match the insertion blocks. Two insertion blocks on each sliding plate are respectively inserted into the insertion holes on the transmitter end and the connecting block.

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