An auxiliary tool for measuring welding residual stress by blind hole method

Abstract

The utility model relates to an auxiliary tool for measuring welding residual stress by blind hole method, belong to welding residual stress measurement technical field. The tool includes installation base, is installed with first seat body, second seat body is along first direction slidingly installed in first seat body, and first locking piece is installed between first seat body and second seat body, is used for locking second seat body in first seat body, third seat body is along second direction slidingly installed in second seat body, and second locking piece is installed between second seat body and third seat body, is used for locking third seat body in second seat body, and second direction and first direction are two directions perpendicular in horizontal plane, precision rotary table has fixed part and rotary mounting part, and rotary mounting part rotates in vertical plane, and fixed part is installed in third seat body, fourth seat body is used for installing electric drill, and fourth seat body slidingly installs in rotary mounting part, and third locking piece is installed between fourth seat body and rotary mounting part, is used for locking fourth seat body in rotary mounting part.

Description

Technical Field

[0001] This utility model belongs to the field of welding residual stress measurement technology, and specifically relates to an auxiliary tooling for measuring welding residual stress using the blind hole method. Background Technology

[0002] Using the blind hole method to measure the residual stress in the weld is a mature existing technology. In the operation, a micro hole with a diameter of about 2 mm is drilled in the part to be tested using a drilling device (such as an electric drill), and with the help of strain gauges, the residual stress in the weld can be easily measured.

[0003] The accuracy of drilling is crucial to the measurement results. Currently, when measuring weld residual stress using the blind hole method, drilling is mostly done manually with a hand-held electric drill, which makes it difficult to guarantee drilling accuracy. Therefore, some drilling auxiliary fixtures have emerged in the existing technology to replace manual drilling in the blind hole method, thus improving drilling accuracy.

[0004] However, most existing drilling auxiliary tools that can replace manual operation of electric drills can only be adjusted in the horizontal direction to change the position of the electric drill in the horizontal plane. The flexibility of adjustment is low, and during use, the installation position often needs to be changed to make the drill bit vertically aligned with the part to be welded. Utility Model Content

[0005] This invention provides an auxiliary tooling for measuring welding residual stress using the blind hole method. This tooling can not only hold the electric drill, but also adjust the position of the electric drill with full freedom, so that the electric drill can be more easily adjusted to vertically align the drill bit with the part to be welded.

[0006] This utility model is achieved through the following technical solution: an auxiliary tooling for measuring welding residual stress using the blind hole method, comprising: The mounting base has the first seat mounted on it; The second seat is slidably mounted on the first seat along a first direction, and a first locking member is installed between the first seat and the second seat, the first locking member being used to lock the second seat to the first seat; A third seat is slidably mounted on the second seat along a second direction. A second locking member is installed between the second seat and the third seat. The second locking member is used to lock the third seat to the second seat. The second direction and the first direction are two directions that are perpendicular to each other in the horizontal plane. A precision rotary table has a fixed part and a rotating mounting part rotatably mounted on the fixed part, wherein the rotating mounting part rotates in a vertical plane, and the fixed part is mounted on the third base body; A fourth mounting body is used to mount an electric drill. The fourth mounting body is slidably mounted on the rotary mounting part. A third locking member is installed between the fourth mounting body and the rotary mounting part. The third locking member is used to lock the fourth mounting body to the rotary mounting part.

[0007] Furthermore, in order to better realize this utility model, the first seat body includes a main seat body and a side wing plate fixed to the bottom end of the main seat body. The side wing plate is fixed to the mounting base by bolts. The top end of the main seat body is provided with a first inverted T-shaped sliding groove, which penetrates the main seat body along a first direction. The bottom end of the second seat body is provided with a first slider adapted to the first inverted T-shaped sliding groove, which is slidably inserted into the first inverted T-shaped sliding groove. A first mounting chamber is provided at the bottom of the first inverted T-shaped slide groove. A first gear is rotatably mounted in the first mounting chamber. A first tooth extending along the first direction is provided at the bottom end of the first slider. The first gear meshes with the first tooth. A first rotating shaft is also rotatably mounted on the main body. One end of the first rotating shaft is connected to the first gear, and a first handle located outside the main body is mounted on the other end of the first rotating shaft.

[0008] Furthermore, in order to better realize this utility model, a first scale is provided on the top outer wall of the main body, and a first mark is provided on the outer wall of the second body to be used in conjunction with the first scale.

[0009] Furthermore, in order to better realize this utility model, the first locking member is a first locking bolt. A first screw hole communicating with the first inverted T-shaped slide groove is provided in the main body. The first locking bolt is screwed into the first screw hole. When locked, the first locking bolt presses the first slider.

[0010] Furthermore, in order to better realize this utility model, a second inverted T-shaped groove is provided at the top of the second seat, the second inverted T-shaped groove passes through the second seat along the second direction, and a second slider adapted to the second inverted T-shaped groove is fixed at the bottom of the third seat, the second slider is slidably inserted into the second inverted T-shaped groove; A second mounting chamber is provided at the bottom of the second inverted T-shaped slide groove. A second gear is rotatably mounted in the second mounting chamber. A second tooth extending along the second direction is provided at the bottom end of the second slider. The second gear meshes with the second tooth. A second shaft is also rotatably mounted on the second seat. One end of the second shaft is connected to the second gear, and a second handle located outside the second seat is mounted on the other end of the second shaft.

[0011] Furthermore, in order to better realize this utility model, a second scale is provided on the top outer wall of the second seat, the third seat is an L-shaped seat composed of a base plate and a vertical plate, the second slider is provided on the bottom surface of the base plate, the fixing part of the precision rotary table is installed on the vertical plate, and the precision rotary table is located on the side above the mounting base, the first seat and the second seat, and a second mark is provided on the side wall of the base plate to be used in conjunction with the second scale.

[0012] Furthermore, in order to better realize this utility model, the second locking member is a second locking bolt. A second screw hole communicating with the second inverted T-shaped slide groove is provided in the second seat body. The second locking bolt is screwed into the second screw hole. When locked, the second locking bolt presses the second slider.

[0013] Furthermore, in order to better realize this utility model, the fourth base includes a straight plate and a mounting platform fixed to one end of the straight plate. The mounting platform is used to mount an electric drill. The rotating mounting part of the precision rotary table is provided with a horizontal T-shaped slide groove, which passes through the rotating mounting part. A third slider adapted to the horizontal T-shaped slide groove is provided on the straight plate, and the third slider is slidably inserted into the horizontal T-shaped slide groove. A third mounting chamber is provided at the bottom of the T-shaped sliding groove. A third gear is rotatably mounted in the third mounting chamber. A third tooth is provided on the third slider. The third gear meshes with the third tooth. A third rotating shaft is also rotatably mounted on the rotating mounting part. One end of the third rotating shaft is connected to the third gear, and the other end of the third rotating shaft is equipped with a third handle located outside the rotating mounting part.

[0014] Furthermore, in order to better realize this utility model, a third scale is provided on the outer wall of the rotating mounting part, and a third mark is provided on the outer wall of the fourth seat to be used in conjunction with the third scale.

[0015] Furthermore, in order to better realize this utility model, the third locking member is a third locking bolt, and a third screw hole communicating with the horizontal T-shaped slide groove is provided in the rotating mounting part. The third locking bolt is screwed into the third screw hole. When locked, the third locking bolt presses the third slider.

[0016] Compared with the prior art, this utility model has the following advantages: The auxiliary fixture for measuring welding residual stress using the blind hole method provided by this utility model can slide and install a third base, a precision rotary table, and a fourth base along a first and a second direction perpendicular to each other in a horizontal plane. The fourth base is used to install an electric drill. Therefore, the fixture can adjust the installation position of the electric drill in the first and a second direction in the horizontal plane. With the help of the precision rotary table, the orientation of the fourth base in the vertical plane can be changed, thereby changing the tilt angle of the electric drill. This makes it easier to vertically align the electric drill with the point to be measured. With the help of the fourth base slidably installed on the precision rotary table, the electric drill can be easily driven to move closer to or away from the point to be measured, thereby drilling at the point to be measured or driving the drill bit out of the drilled hole.

[0017] Therefore, compared with the prior art, the auxiliary tooling provided by this utility model for measuring welding residual stress by blind hole method can not only hold the electric drill, but also adjust the position and tilt angle of the electric drill more flexibly, so as to position the electric drill more quickly. With the help of this tooling, more precise holes can be drilled at the test point, so that the measurement results of welding residual stress by blind hole method are more accurate. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the auxiliary tooling for measuring welding residual stress using the blind hole method provided in this embodiment of the utility model; Figure 2 yes Figure 1 Another perspective view of the auxiliary tooling used for measuring welding residual stress using the blind hole method; Figure 3 This is a schematic diagram of the installation structure of the first gear in an embodiment of this utility model; Figure 4 This is a schematic diagram of the installation structure of the second gear in an embodiment of this utility model; Figure 5 This is a schematic diagram of the installation structure of the third gear in an embodiment of this utility model.

[0020] In the picture: 10- Mounting base; 20-First seat body, 21-Main seat body, 22-Side wing plate, 23-First gear, 24-First pivot, 25-First handle, 26-First scale; 30-Second seat, 31-First slider, 32-First tooth, 33-First marking, 34-Second gear, 35-Second shaft, 36-Second handle, 37-Second scale; 40 - First locking bolt; 50-Third seat, 51-Second slider, 52-Second tooth, 53-Base plate, 54-Upright plate, 55-Second marking line; 60 - Second locking bolt; 70 - Precision rotary table; 71 - Third gear; 72 - Third shaft; 73 - Third handle; 74 - Third scale. 80-Fourth seat, 81-Straight plate, 82-Mounting platform, 83-Third slider, 84-Third tooth, 85-Third marking line; 90 - Third locking bolt; 100-Electric Drill. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Example

[0022] like Figures 1-5 As shown, the auxiliary fixture for measuring welding residual stress using the blind hole method provided in this embodiment includes a mounting base 10, a first seat 20, a second seat 30, a third seat 50, a precision rotary table 70, and a fourth seat 80, wherein: The mounting base 10 is equipped with a magnetic base or a vacuum chuck to securely mount the mounting base 10 onto the weldment to be tested or onto a foreign object. The magnetic base and vacuum chuck are existing technologies and will not be described in detail here. The first seat 20 is fixed to the mounting base 10 by bolts.

[0023] The second seat 30 is slidably mounted on the first seat 20, and the sliding direction of the second seat 30 on the first seat 20 is a first direction. A first locking member is installed between the first seat 20 and the second seat 30, and the first locking member is used to lock the second seat 30 to the first seat 20. It is easy to understand that when the first locking member is locked, the second seat 30 is fixed to the first seat 20, and when the first locking member is unlocked, the second seat 30 can slide on the first seat 20.

[0024] The third seat 50 is slidably mounted on the second seat 30, and slides along a second direction on the second seat 30. A second locking member is installed between the second seat 30 and the third seat 50, and the second locking member is used to lock the third seat 50 to the second seat 30. When the second locking member is locked, the third seat 50 is fixed to the second seat 30; when the second locking member is unlocked, the third seat 50 can slide on the second seat 30. The second direction and the first direction are two mutually perpendicular directions in the horizontal plane.

[0025] The precision rotary stage 70 is existing technology, widely used in fields such as cameras, medical rotary stages, and CNC machine tools, and therefore will not be described in detail here. It is worth noting that, like existing manual rotary stages, this precision rotary stage 70 is manually adjustable for rotation and is equipped with coarse adjustment knobs for coarse adjustment and fine adjustment knobs for fine adjustment. Furthermore, the precision rotary stage 70 is equipped with a fixed part and a rotating mounting part rotatably mounted on the fixed part, with the rotating mounting part rotating in a vertical plane. The fixed part is mounted on the third base 50. It is easy to understand that the precision rotary stage 70 not only has fine and coarse adjustment functions but also a locking function, the principle of which is the same as that of existing precision rotary stages 70.

[0026] The fourth mounting body 80 is used to mount an electric drill 100, a magnifying glass, or a miniature laser alignment instrument. The fourth mounting body 80 is slidably mounted on the rotary mounting portion. Ideally, after the electric drill 100 is mounted on the fourth mounting body 80, the drill bit of the electric drill 100 is perpendicular to the point to be measured. In this case, the fourth mounting body 80 can slide vertically. A third locking member is installed between the fourth mounting body 80 and the rotary mounting portion to lock the fourth mounting body 80 to the rotary mounting portion. When the third locking member is locked, the fourth mounting body 80 is secured to the rotary mounting portion; when the third locking member is unlocked, the fourth mounting body 80 can slide on the rotary mounting portion.

[0027] In use, first use the mounting base 10 to install the entire fixture in a suitable position. Then, install the electric drill 100 on the fourth base 80, keeping the first and second locking parts loose. Next, slide the second base 30 and the third base 50 so that the drill bit of the electric drill 100 is above the point to be measured. Then, lock the first and second locking parts. Next, adjust the precision rotary table 70 so that the drill bit of the electric drill 100 is aligned with the point to be measured. Then, start the electric drill 100, and then loosen the third locking part to drive the electric drill 100 closer to the point to be measured, so that the drill bit of the electric drill 100 drills a suitable hole at the point to be measured in a vertical position. Finally, drive the electric drill 100 away from the point to be measured so that the drill bit is pulled out of the drilled hole. Of course, you can also first use a magnifying glass or a miniature laser alignment instrument to align the point to be measured, and then remove the magnifying glass or miniature laser alignment instrument and install the electric drill 100 on the fourth base 80.

[0028] An optional implementation of this embodiment is as follows: The first seat 20 includes a main seat 21 and a side wing plate 22 integrally formed on the bottom side wall of the main seat 21. The side wing plate 22 is fixed to the mounting base by bolts. A first inverted T-shaped groove is provided at the top of the main seat 21, and the first inverted T-shaped groove extends through the main seat 21 along a first direction. The bottom of the second seat 30 is integrally formed with a first slider 31 adapted to the first inverted T-shaped groove, and the first slider 31 is slidably inserted into the first inverted T-shaped groove. A first mounting chamber is formed at the bottom of the first inverted T-shaped groove. A first gear 23 is rotatably mounted in the first mounting chamber. A first tooth 32 extending along the first direction is provided at the bottom end of the first slider 31. The first gear 23 meshes with the first tooth 32. A first rotating shaft 24 is also rotatably mounted on the main seat 21. One end of the first rotating shaft 24 is connected to the first gear 23, and the other end of the first rotating shaft 24 is equipped with a first handle 25 located outside the main seat 21. In specific installation, the first gear 23 can be first inserted into the mounting chamber through the top opening of the first inverted T-shaped groove. Then, one end of the first rotating shaft 24 can be inserted into the mounting chamber. Finally, the one end of the first rotating shaft 24 and the first gear 23 can be coaxially fixed together by welding or bonding.

[0029] Thus, rotating the first handle 25 drives the first rotating shaft 24 and the first gear 23 to rotate, thereby driving the first slider 31 to slide in the first inverted T-shaped groove, so that the second seat 30 slides on the first seat 20 along the first direction. In order to precisely control the sliding position of the second seat 30 on the first seat 20, in this embodiment, a first scale 26 is provided on the top outer wall of the main seat 21, and a first mark 33 is provided on the outer wall of the second seat 30 to be used in conjunction with the first scale 26. The first mark 33 moves with the second seat 30, and the amount of movement of the second seat 30 in the first direction can be quantified by using the first scale 26.

[0030] Optionally, the first locking component is a first locking bolt 40. A first screw hole communicating with the first inverted T-shaped slide groove is provided in the main body 21. The first locking bolt 40 is screwed into the first screw hole. When locked, the first locking bolt 40 presses the first slider 31. When the first locking bolt 40 is loosened, the first locking bolt 40 releases the main body 21 of the first seat 20.

[0031] It is easy to understand that the first gear 23, the first rotating shaft 24 and the first handle 25 constitute the first driving assembly that drives the second seat 30 to move. The first driving assembly can also be a linear motor, which is installed on the top of the first seat 20 and the slider of the linear motor is connected to the second seat 30.

[0032] An optional implementation of this embodiment is as follows: a second inverted T-shaped groove is provided at the top of the second seat 30, the second inverted T-shaped groove passes through the second seat 30 along the second direction, and a second slider 51 adapted to the second inverted T-shaped groove is integrally formed at the bottom of the third seat 50. The second slider 51 is slidably inserted into the second inverted T-shaped groove. A second mounting chamber is provided at the bottom of the second inverted T-shaped slide groove. A second gear 34 is rotatably mounted in the second mounting chamber. A second tooth 52 extending along the second direction is provided at the bottom end of the second slider 51. The second gear 34 meshes with the second tooth 52. A second shaft 35 is also rotatably mounted on the second seat 30. One end of the second shaft 35 is connected to the second gear 34, and the other end of the second shaft 35 is equipped with a second handle 36 located outside the second seat 30. In specific installation, the second gear 34 can be inserted into the second mounting chamber through the top opening of the second inverted T-shaped slide groove. Then, one end of the second shaft 35 can be inserted into the second mounting chamber. Finally, the one end of the second shaft 35 and the second gear 34 can be coaxially fixed together by welding or bonding.

[0033] In this way, rotating the second handle 36 will drive the second shaft 35 and the second gear 34 to rotate, thereby driving the second slider 51 to slide in the second inverted T-shaped groove, so that the third seat 50 slides on the second seat 30 along the second direction. In order to precisely control the sliding position of the third seat 50 on the second seat 30, in this embodiment, a second scale 37 is provided on the top outer wall of the second seat 30. The third seat 50 is an L-shaped seat composed of a base plate 53 and a vertical plate 54. The second slider 51 is provided on the bottom surface of the base plate 53. The fixing part of the precision rotary table 70 is installed on the vertical plate 54, and the precision rotary table 70 is located on the side above the mounting base, the first seat 20 and the second seat 30. That is, the precision rotary table extends out of the mounting base, the first seat 20 and the second seat 30. A second mark 55 is provided on the side wall of the base plate 53 to be used in conjunction with the second scale 37. The second mark 55 moves with the third seat 50. The amount of movement of the third seat 50 in the second direction can be quantified by using the second scale 37.

[0034] Optionally, the second locking element is a second locking bolt 60. A second screw hole communicating with the second inverted T-shaped slide groove is provided in the second seat 30. The second locking bolt 60 is screwed into the second screw hole. When locked, the second locking bolt 60 presses the second slider 51. When the second locking bolt 60 is loosened, the second locking bolt 60 releases the second seat 30.

[0035] It is easy to understand that the second gear 34, the second shaft 35 and the second handle 36 constitute the second drive assembly that drives the third seat 50 to move. The second drive assembly can also be a linear motor, which is installed on the top of the second seat 30 and the slider of the linear motor is connected to the third seat 50.

[0036] An optional implementation of this embodiment is as follows: The fourth base 80 includes a straight plate 81 and a mounting platform 82 integrally formed at one end of the straight plate 81. The mounting platform 82 is used to mount an electric drill 100, a magnifying glass, or a miniature laser alignment instrument. The rotating mounting portion of the precision rotary table 70 has a horizontal T-shaped groove that extends through the rotating mounting portion. A third slider 83 adapted to the horizontal T-shaped groove is provided on the straight plate 81, and the third slider 83 is slidably inserted into the horizontal T-shaped groove. Specifically, the mounting platform 82 has a through hole, in which the electric drill 100, magnifying glass, or miniature laser alignment instrument can be placed and tightened using a clamping bolt. Furthermore, it is worth noting that when measuring residual stress at the welded area using the blind hole method, the required drill hole is smaller; therefore, the vibration generated when the electric drill 100 drills is relatively small.

[0037] A third mounting chamber is provided at the bottom of the aforementioned horizontal T-shaped slide groove. A third gear 71 is rotatably mounted in the third mounting chamber. A third tooth 84 is provided on the aforementioned third slider 83. The third gear 71 meshes with the third tooth 84. A third rotating shaft 72 is also rotatably mounted on the aforementioned rotating mounting part. One end of the third rotating shaft 72 is connected to the aforementioned third gear 71, and the other end of the third rotating shaft 72 is equipped with a third handle 73 located outside the aforementioned rotating mounting part. In specific installation, the third gear 71 can be first inserted into the aforementioned third mounting chamber through the side opening of the horizontal T-shaped slide groove. Then, one end of the third rotating shaft 72 can be inserted into the aforementioned third mounting chamber. Finally, the one end of the third rotating shaft 72 can be fixed together with the third gear 71 by welding or bonding.

[0038] Thus, rotating the third handle 73 drives the third shaft 72 and the third gear 71 to rotate, thereby driving the third slider 83 to slide in the T-shaped groove, and thus causing the fourth seat 80 to slide on the rotary mounting part. In order to precisely control the sliding position of the fourth seat 80 on the rotary mounting part, in this embodiment, a third scale 74 is provided on the outer wall of the rotary mounting part, and a third mark 85 is provided on the outer wall of the fourth seat 80 to be used in conjunction with the third scale 74. The third mark 85 moves with the fourth seat 80. Using the third scale 74, the amount of movement of the fourth seat 80 on the rotary mounting part can be quantified.

[0039] Optionally, the third locking element is a third locking bolt 90. A third screw hole communicating with the above-mentioned horizontal T-shaped slide groove is provided in the above-mentioned rotating mounting part. The third locking bolt 90 is screwed into the above-mentioned third screw hole. When locked, the third locking bolt 90 presses the third slider 83. When the third locking bolt 90 is loosened, the third locking bolt 90 loosens the third seat 50.

[0040] It is easy to understand that the aforementioned third gear 71, third shaft 72 and third handle 73 constitute the third drive assembly that drives the fourth seat 80 to move. The third drive assembly can also be a linear motor, which is mounted on the rotary mounting base of the precision rotary table 70, and the slider of the linear motor is connected to the aforementioned fourth seat 80.

[0041] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope described in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An auxiliary tooling for measuring welding residual stress using the blind hole method, characterized in that, include: Mounting base (10), on which the first seat (20) is mounted; The second seat (30) is slidably mounted on the first seat (20) along the first direction. A first locking member is installed between the first seat (20) and the second seat (30). The first locking member is used to lock the second seat (30) to the first seat (20). A third seat (50) is slidably mounted on the second seat (30) along a second direction. A second locking member is installed between the second seat (30) and the third seat (50). The second locking member is used to lock the third seat (50) to the second seat (30). The second direction and the first direction are two directions that are perpendicular to each other in the horizontal plane. A precision rotary table (70) has a fixed part and a rotating mounting part rotatably mounted on the fixed part, and the rotating mounting part rotates in a vertical plane, and the fixed part is mounted on the third base (50); A fourth mounting body (80) is used to mount an electric drill (100). The fourth mounting body (80) is slidably mounted on the rotary mounting part. A third locking member is installed between the fourth mounting body (80) and the rotary mounting part. The third locking member is used to lock the fourth mounting body (80) to the rotary mounting part.

2. The auxiliary tooling for measuring welding residual stress using the blind hole method according to claim 1, characterized in that: The first seat (20) includes a main seat (21) and a side wing plate (22) fixed to the bottom end of the main seat (21). The side wing plate (22) is fixed to the mounting base by bolts. The top end of the main seat (21) is provided with a first inverted T-shaped groove. The first inverted T-shaped groove passes through the main seat (21) along a first direction. The bottom end of the second seat (30) is provided with a first slider (31) adapted to the first inverted T-shaped groove. The first slider (31) is slidably inserted into the first inverted T-shaped groove. A first mounting chamber is provided at the bottom of the first inverted T-shaped groove. A first gear (23) is rotatably mounted in the first mounting chamber. A first tooth (32) extending along the first direction is provided at the bottom end of the first slider (31). The first gear (23) meshes with the first tooth (32). A first rotating shaft (24) is also rotatably mounted on the main body (21). One end of the first rotating shaft (24) is connected to the first gear (23). A first handle (25) located outside the main body (21) is installed at the other end of the first rotating shaft (24).

3. The auxiliary tooling for measuring welding residual stress using the blind hole method according to claim 2, characterized in that: A first scale (26) is provided on the top outer wall of the main body (21), and a first mark (33) is provided on the outer wall of the second body (30) to be used in conjunction with the first scale (26).

4. The auxiliary tooling for measuring welding residual stress using the blind hole method according to claim 2, characterized in that: The first locking component is a first locking bolt (40). A first screw hole communicating with the first inverted T-shaped slide groove is provided on the main body (21). The first locking bolt (40) is screwed into the first screw hole. When locked, the first locking bolt (40) presses the first slider (31).

5. The auxiliary tooling for measuring welding residual stress using the blind hole method according to claim 1, characterized in that: The top end of the second seat (30) is provided with a second inverted T-shaped groove, which runs through the second seat (30) along the second direction. The bottom end of the third seat (50) is fixed with a second slider (51) that is adapted to the second inverted T-shaped groove. The second slider (51) is slidably inserted into the second inverted T-shaped groove. A second mounting chamber is provided at the bottom of the second inverted T-shaped groove. A second gear (34) is rotatably mounted in the second mounting chamber. A second tooth (52) extending along the second direction is provided at the bottom end of the second slider (51). The second gear (34) meshes with the second tooth (52). A second shaft (35) is also rotatably mounted on the second seat (30). One end of the second shaft (35) is connected to the second gear (34). A second handle (36) located outside the second seat (30) is installed at the other end of the second shaft (35).

6. The auxiliary tooling for measuring welding residual stress using the blind hole method according to claim 5, characterized in that: A second scale (37) is provided on the top outer wall of the second seat (30). The third seat (50) is an L-shaped seat composed of a base plate (53) and a vertical plate (54). The second slider (51) is provided on the bottom surface of the base plate (53). The fixing part of the precision rotary table (70) is installed on the vertical plate (54). The precision rotary table (70) is located above the mounting base, the first seat (20), and the second seat (30). A second mark (55) is provided on the side wall of the base plate (53) to be used in conjunction with the second scale (37).

7. The auxiliary tooling for measuring welding residual stress using the blind hole method according to claim 5, characterized in that: The second locking component is a second locking bolt (60). A second screw hole communicating with the second inverted T-shaped slide groove is provided in the second seat (30). The second locking bolt (60) is screwed into the second screw hole. When locked, the second locking bolt (60) presses the second slider (51).

8. The auxiliary tooling for measuring welding residual stress using the blind hole method according to claim 1, characterized in that: The fourth mounting body (80) includes a straight plate (81) and a mounting platform (82) fixed to one end of the straight plate (81). The mounting platform (82) is used to mount an electric drill (100). The rotating mounting part of the precision rotary table (70) is provided with a horizontal T-shaped slide groove, which passes through the rotating mounting part. A third slider (83) adapted to the horizontal T-shaped slide groove is provided on the straight plate (81). The third slider (83) is slidably inserted into the horizontal T-shaped slide groove. A third mounting chamber is provided at the bottom of the T-shaped sliding groove. A third gear (71) is rotatably mounted in the third mounting chamber. A third tooth (84) is provided on the third slider (83). The third gear (71) meshes with the third tooth (84). A third rotating shaft (72) is also rotatably mounted on the rotating mounting part. One end of the third rotating shaft (72) is connected to the third gear (71). A third handle (73) located outside the rotating mounting part is installed on the other end of the third rotating shaft (72).

9. The auxiliary tooling for measuring welding residual stress using the blind hole method according to claim 8, characterized in that: A third scale (74) is provided on the outer wall of the rotating mounting part, and a third mark (85) is provided on the outer wall of the fourth seat (80) to be used in conjunction with the third scale (74).

10. The auxiliary tooling for measuring welding residual stress using the blind hole method according to claim 8, characterized in that: The third locking component is a third locking bolt (90). A third screw hole communicating with the horizontal T-shaped slide groove is provided in the rotating mounting part. The third locking bolt (90) is screwed into the third screw hole. When locked, the third locking bolt (90) presses the third slider (83).

Images