A positioning auxiliary adjusting tool for a hull section

Abstract

The application discloses a hull section positioning auxiliary adjusting tool and belongs to the technical field of hull assembling auxiliary tools. In view of the problem of large loss in hull section positioning in the prior art, the hull section positioning auxiliary adjusting tool is characterized by the following: the length of the tool is bidirectionally adjusted through the cooperation of the forward and reverse thread structure of the adjusting screw and the sleeve assembly; the first supporting ring and the second supporting ring are automatically meshed and driven when the screw is screwed out, so that the second supporting ring is screwed out and the first supporting ring is screwed in reversely at the same time, the screw-out cavity is filled, and the radial supporting rigidity is enhanced; the third supporting ring moves with the screw and provides full-range support and protection for the suspended section. The ground bar connecting plate and the U-shaped clamp code structure enable the two ends of the tool to be quickly and detachably connected with the jig frame and the structural stringer, welding operation is not needed, welding deformation and paint burning are avoided, the tool is flexible and convenient to disassemble and assemble, the components can be repeatedly used, and material consumption and post-processing time are reduced.

Description

Technical Field

[0001] This invention belongs to the field of auxiliary tooling technology for hull assembly, and specifically relates to an auxiliary tooling for positioning and adjusting hull sections. Background Technology

[0002] In the past, when assembling car deck sections, the main method involved welding clamps onto the deck surface, using jacks or flange bolts for adjustment and positioning, and then fixing diagonal bracing on the structural surface using profiles such as channel steel, round pipes, and angle steel welded to the reinforcing bars and deck girders. This traditional method requires welding a large number of clamps and supporting profiles onto the structural surface, which not only increases the material cost of clamps and additional tooling but also incurs significant welding costs. The heat generated during welding can easily cause structural deformation, resulting in large and difficult-to-control deformations, requiring additional time for cutting, planing, grinding, repair welding, and deformation correction. Furthermore, welding operations cause significant paint burn, increasing the material and labor costs for paint repair. The entire construction process is cumbersome, inefficient, and the tooling is mostly for single use and cannot be reused. Therefore, a positioning and adjustment tooling with lower wear and tear is needed.

[0003] This invention aims to reduce or at least alleviate the problem of high wear and tear during the use of the aforementioned positioning and adjustment fixtures by providing a hull section positioning auxiliary adjustment fixture. Summary of the Invention

[0004] In view of the above-mentioned defects or improvement needs of the prior art, the present invention provides a hull section positioning auxiliary adjustment tooling, which has the advantage of reducing losses.

[0005] To achieve the above objectives, the present invention provides a hull section positioning auxiliary adjustment fixture, comprising:

[0006] The adjusting screw is composed of a positive threaded rod and a negative threaded rod of equal length spliced ​​together. The positive threaded rod and the negative threaded rod have opposite thread directions. The adjusting screw has a hole in the center.

[0007] The sleeve assembly has two sets, which are respectively sleeved on the ends of the positive thread rod and the negative thread rod. The sleeve assembly includes a sleeve shell, the sleeve shell is hollow inside and has a threaded cavity, and the threaded cavity has an internal thread that matches the positive thread rod or the negative thread rod.

[0008] Two adjusting steel pipes are provided, each disposed at the end of the sleeve assembly;

[0009] A ground reinforcement connecting plate is disposed at one end of one of the adjusting steel pipes;

[0010] The connecting structure, located at the end of another adjusting steel pipe, includes a sealing plate located at the end of the adjusting steel pipe, an ear plate located on the bottom surface of the sealing plate, a reinforcing plate hinged to the ear plate, a U-shaped clamp located at the bottom of the reinforcing plate, and a fastening bolt passing through the U-shaped clamp.

[0011] As a further improvement of the present invention, in the sleeve shell, a first smooth cavity and a second smooth cavity are sequentially formed at the rear end of the threaded cavity, wherein the inner diameter of the first smooth cavity is larger than that of the threaded cavity, and the inner diameter of the second smooth cavity is larger than that of the first smooth cavity.

[0012] The second smooth cavity is provided with a first support ring, a second support ring is provided inside the first support ring, and an external thread is provided on the outside of the second support ring. The inner side of the first support ring has a thread that matches the external thread. A retaining ring is provided on the inner edge of the second support ring, and a second helical tooth is provided on the retaining ring.

[0013] Both the positive thread rod and the negative thread rod are provided with a toothed ring at their ends. Each toothed ring is provided with a first helical tooth. The first helical tooth is oriented towards the insertion hole along the axial direction of the adjusting screw. The first helical tooth meshes with the second helical tooth.

[0014] As a further improvement of the present invention, the outer diameter of the second support ring is the same as the inner diameter of the first smooth cavity, and the outer diameter of the first support ring is the same as the inner diameter of the second smooth cavity.

[0015] As a further improvement of the present invention, the positive thread rod has the same thread direction as the external ring thread on the same side, and the negative thread rod has the same thread direction as the external ring thread on the same side.

[0016] The positive thread rod and the negative thread rod have the same pitch, and the pitch of the external ring thread is 1-1.2 times that of the positive thread rod or the negative thread rod.

[0017] As a further improvement of the present invention, a first sliding groove and a second sliding groove are respectively opened on both sides of the insertion hole, and a third support ring is sleeved on the outer side of the sleeve assembly. A retaining ring is provided at the inner edge of the third support ring, and the retaining ring can be inserted into the first sliding groove or the second sliding groove on the same side for rotation.

[0018] As a further improvement of the present invention, a third sliding groove is provided on the outer side of the sleeve shell along the axial direction, and a limiting slider is provided on the inner side of the third support ring. The limiting slider can be inserted into the third sliding groove on the same side and slide.

[0019] As a further improvement of the present invention, a limiting hole is provided on the outer side of the third support ring, and a stop block is provided in the limiting hole, and the stop block can slide in the limiting hole;

[0020] A plug rod is inserted into the socket, and the plug rod can contact the limiting socket when it slides outward.

[0021] As a further improvement of the present invention, the length of the third support ring is greater than or equal to the length of the positive thread rod or the negative thread rod, and the inner diameter of the third support ring is equal to the outer diameter of the sleeve shell.

[0022] As a further improvement of the present invention, the friction coefficients μ1 and μ2 between the second support ring and the first support ring, i.e. the sliding friction coefficients between the first support ring and the sleeve shell, satisfy the following critical condition:

[0023]

[0024] in For thread profile angle, The thread pitch diameter The outer radius of the middle layer, This is the helix angle of the thread.

[0025] As a further improvement of the present invention, a friction-reducing coating or lubricating layer is provided between the second support ring and the first support ring to adjust the value of μ1, and a specific roughness or plating layer is provided between the first support ring and the sleeve shell to adjust the value of μ2.

[0026] In summary, the beneficial effects of the above-described technical solutions conceived by this invention compared with the prior art include:

[0027] This invention discloses a hull section positioning auxiliary adjustment fixture. Through the cooperation of the adjusting screw's forward and reverse thread structure with the sleeve assembly, the fixture length is infinitely adjustable, adapting to the positioning requirements of hull sections of different specifications. The first and second support rings within the sleeve assembly automatically engage and drive when the screw is unscrewed. This causes the second support ring to rotate outward while the first support ring rotates inward in the opposite direction, effectively filling the cavity formed after the screw is unscrewed, enhancing the radial support rigidity of the threaded connection, and preventing bending deformation caused by excessively long unscrewed sections. The third support ring forms a sliding connection with the adjusting screw and sleeve assembly through a retaining ring and a limiting slider. It moves with the screw as it rotates out and provides full support protection for the unscrewed portion, further improving the overall stability of the fixture. The ground reinforcement connecting plate and connecting structure allow for quick fixation of both ends of the fixture to the jig and structural truss, respectively. The cooperation of the U-shaped clamps and fastening bolts enables a detachable connection with the truss, allowing positioning and fixation without welding, avoiding welding deformation and paint burn problems. The entire tooling structure is flexible and easy to assemble and disassemble, and all components can be reused, effectively reducing material consumption and subsequent processing time. Attached Figure Description

[0028] Figure 1This is a schematic diagram of a tooling structure for auxiliary adjustment of hull section positioning according to the present invention;

[0029] Figure 2 For the present invention Figure 1 Schematic diagram of the structure at point A in the middle;

[0030] Figure 3 This is a schematic diagram of the adjusting screw structure of the present invention;

[0031] Figure 4 For the present invention Figure 3 Schematic diagram of the structure at point B;

[0032] Figure 5 This is a schematic diagram of the sleeve assembly structure of the present invention;

[0033] Figure 6 For the present invention Figure 5 Schematic diagram of the structure at point C;

[0034] Figure 7 This is a schematic cross-sectional view of the sleeve assembly of the present invention;

[0035] Figure 8 This is a schematic diagram of the structure of the second embodiment of the present invention;

[0036] Figure 9 This is a schematic diagram of the structure after disassembly of the second embodiment of the present invention;

[0037] Figure 10 For the present invention Figure 9 Schematic diagram of the structure at point D;

[0038] Figure 11 This is a schematic diagram of the third support ring structure of the present invention.

[0039] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically:

[0040] 1. Adjusting screw; 2. Sleeve assembly; 3. Adjusting steel pipe; 4. Ground reinforcement connecting plate; 5. Sealing plate;

[0041] Socket 11; Threaded rod 12; Threaded rod 13; Gear ring 14; First helical tooth 141;

[0042] First slide groove 15; Second slide groove 16; Insert rod 17; Sleeve outer shell 21; Threaded cavity 211;

[0043] First smooth cavity 212; second smooth cavity 213; internal thread 214; third groove 215; first support ring 22;

[0044] Second support ring 23; external thread 231; retaining ring 232; second helical tooth 233; third support ring 24;

[0045] Limiting slider 241; limiting socket 242; stop block 243; retaining ring 244; ear plate 51;

[0046] 52. Reinforcing plate; 53. U-shaped clamp; 54. Fastening bolt. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, 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.

[0048] In the description of this invention, it should be noted that the terms "lower surface", "bottom", "lateral", "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0049] Furthermore, the terms "first," "second," and similar words do not indicate any order, quantity, or importance, but are simply used to distinguish different components.

[0050] It should be understood that the terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. Further, when the terms "comprising" or "including" are used in this invention, they are used to indicate the presence of stated features, integrals, steps, elements, and / or elements, without excluding the presence or addition of one or more other features, integrals, steps, elements, and / or combinations thereof.

[0051] Unless otherwise defined, all terms used in this invention (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should be further understood that the terms used in this invention shall be construed as having the meaning consistent with their meaning in the context of this specification and the relevant field, and shall not be interpreted in an idealized or overly formal sense, except as expressly defined herein.

[0052] Example 1

[0053] like Figure 1-7 As shown, a hull section positioning auxiliary adjustment fixture includes:

[0054] The adjusting screw 1 is composed of a positive threaded rod 12 and a negative threaded rod 13 of equal length spliced ​​together. The positive threaded rod 12 and the negative threaded rod 13 have opposite thread directions. The adjusting screw 1 has a hole 11 in the center.

[0055] The sleeve assembly 2 has two sets, which are respectively sleeved on the ends of the positive thread rod 12 and the negative thread rod 13. The sleeve assembly 2 includes a sleeve shell 21. The sleeve shell 21 is hollow inside and has a threaded cavity 211. The threaded cavity 211 has an internal thread 214 that matches the positive thread rod 12 or the negative thread rod 13.

[0056] Two adjusting steel pipes 3 are provided, each disposed at the end of the sleeve assembly 2;

[0057] The ground reinforcement connecting plate 4 is disposed at the end of one of the adjusting steel pipes 3;

[0058] The connecting structure, located at the end of another adjusting steel pipe 3, includes a sealing plate 5 located at the end of the adjusting steel pipe 3, an ear plate 51 located on the bottom surface of the sealing plate 5, a reinforcing plate 52 hinged to the ear plate 51, a U-shaped clamp 53 located at the bottom of the reinforcing plate 52, and a fastening bolt 54 passing through the U-shaped clamp 53.

[0059] When the length of this device needs to be adjusted, rotating the adjusting screw 1 will cause both the positive thread rod 12 and the negative thread rod 13 in the sleeve assembly 2 to screw outwards or inwards, thus achieving the effect of length adjustment. The adjusting steel pipe 3, as a component for further length extension, can be customized in length and material according to site requirements. The ground reinforcement connecting plate 4 is located at one end and is used to connect with the ground reinforcement or jig. The connecting structure is used to connect the structural truss, and the whole constitutes a flexible and convenient positioning and adjustment auxiliary tooling.

[0060] Furthermore, in the sleeve housing 21, a first smooth cavity 212 and a second smooth cavity 213 are sequentially formed at the rear end of the threaded cavity 211. The inner diameter of the first smooth cavity 212 is larger than that of the threaded cavity 211, and the inner diameter of the second smooth cavity 213 is larger than that of the first smooth cavity 212.

[0061] The second smooth cavity 213 is provided with a first support ring 22, a second support ring 23 is provided on the inner side of the first support ring 22, and an external thread 231 is provided on the outer side of the second support ring 23. The inner side of the first support ring 22 has a thread that matches the external thread 231. A retaining ring 232 is provided on the inner edge of the second support ring 23, and a second helical tooth 233 is provided on the retaining ring 232.

[0062] Both the positive thread rod 12 and the negative thread rod 13 are provided with a toothed ring 14 at their ends. Each toothed ring 14 is provided with a first helical tooth 141. The first helical tooth 141 is oriented towards the insertion hole 11 along the axial direction of the adjusting screw 1. The first helical tooth 141 meshes with the second helical tooth 233.

[0063] Furthermore, the outer diameter of the second support ring 23 is the same as the inner diameter of the first smooth cavity 212, and the outer diameter of the first support ring 22 is the same as the inner diameter of the second smooth cavity 213.

[0064] Furthermore, the positive thread rod 12 has the same thread direction as the external annular thread 231 on the same side, and the negative thread rod 13 has the same thread direction as the external annular thread 231 on the same side.

[0065] The positive thread rod 12 and the negative thread rod 13 have the same pitch, and the pitch of the external annular thread 231 is 1-1.2 times that of the positive thread rod 12 or the negative thread rod 13.

[0066] When the length of this positioning auxiliary adjustment fixture is at its shortest, both the positive thread rod 12 and the negative thread rod 13 are located within their respective sleeve assemblies 2. However, when the adjusting screw 1 is rotated, both the positive thread rod 12 and the negative thread rod 13 rotate outwards. When the gear ring 14 moves to the retaining ring 232, the second helical tooth 233 and the first helical tooth 141 mesh. As the positive thread rod 12 and the negative thread rod 13 continue to rotate outwards, the second support ring 23 is driven to rotate outwards. Due to the thread matching relationship between the second support ring 23 and the first support ring 22, as well as the friction between the first support ring 22 and the inner wall of the sleeve shell 21, the first support ring 22 rotates inwards in the opposite direction, thereby filling the cavity (i.e., the second smooth cavity 213) created by the screw rotating outwards, and strengthening the radial support rigidity at this position. At the same time, during the outward rotation of the second support ring 23, it can also fill the first smooth cavity 212 and strengthen its rigidity.

[0067] When the second support ring 23 rotates, the threaded pair between the second support ring 23 and the first support ring 22 generates an axial driving force. For the first support ring 22 to move axially within the sleeve housing 21, and for this axial movement to be opposite to the conventional screw-in / screw-out direction corresponding to the rotation direction of the second support ring 23, the following tribological conditions must be met:

[0068] Let μ1 be the coefficient of thread friction (or equivalent coefficient of friction) between the second support ring 23 and the first support ring 22, and μ2 be the coefficient of sliding friction between the first support ring 22 and the sleeve housing 21. Let the thread angle be... The thread pitch diameter is The outer radius of the middle layer is The thread helix angle is .

[0069] To achieve the above reverse motion, the following must be satisfied:

[0070] 1. Circumferential locking condition: μ2 needs to be large enough so that the circumferential frictional torque between the first support ring 22 and the sleeve shell 21 is greater than the circumferential torque component transmitted by the threaded pair, thereby preventing the first support ring 22 from rotating.

[0071] 2. Axial driving conditions: μ1 needs to be small enough to ensure that the threaded pair is in a non-self-locking state or a specific force transmission state, so that the axial force is sufficient to overcome the axial friction force generated by μ2.

[0072] The friction coefficients μ1 and μ2 satisfy: μ2 / μ1>C, where C is the coefficient of friction determined by the thread helix angle λ, the thread profile half angle α, and the radius ratio R / A constant that determines the value, and C ≥ 1. Specifically: .

[0073] Preferably, a friction-reducing coating or lubricating layer is provided between the second support ring 23 and the first support ring 22 to adjust the value of μ1, and a specific roughness or plating layer is provided between the first support ring 22 and the sleeve housing 21 to adjust the value of μ2.

[0074] Example 2

[0075] like Figure 8-11 As shown, the difference between this embodiment and the first embodiment is that the first sliding groove 15 and the second sliding groove 16 are respectively opened on both sides of the insertion hole 11, and the third support ring 24 is sleeved on the outer side of the sleeve assembly 2. The inner edge of the third support ring 24 is provided with a retaining ring 244, which can be inserted into the first sliding groove 15 or the second sliding groove 16 on the same side and rotated.

[0076] In a preferred embodiment of the present invention, a third sliding groove 215 is provided on the outer side of the sleeve housing 21 along the axial direction, and a limiting slider 241 is provided on the inner side of the third support ring 24, the limiting slider 241 being able to slide in the third sliding groove 215 on the same side.

[0077] In a preferred embodiment of the present invention, a limiting hole 242 is provided on the outer side of the third support ring 24, and a stop block 243 is provided in the limiting hole 242, and the stop block 243 can slide in the limiting hole 242;

[0078] A rod 17 is inserted into the socket 11, and the limiting socket 242 can contact the rod 17 when it slides outward.

[0079] In a preferred embodiment of the present invention, the length of the third support ring 24 is greater than or equal to the length of the positive thread rod 12 or the negative thread rod 13, and the inner diameter of the third support ring 24 is equal to the outer diameter of the sleeve shell 21.

[0080] When the positive thread rod 12 or the negative thread rod 13 begins to rotate outward, since it is unscrewed from the sleeve housing 21, the unscrewed portion of the positive thread rod 12 or the negative thread rod 13 loses the support rigidity of the outer sleeve housing 21 compared to when it was inside the sleeve housing 21. The third support ring 24 can then reinforce this portion. When the positive thread rod 12 or the negative thread rod 13 is unscrewed, the third support ring 24 will not fall off the adjusting screw 2 due to the presence of the retaining ring 244. It will always cover the outside of the positive thread rod 12 or the negative thread rod 13, and through the contact between the limiting slider 241, the inner wall of the third support ring 24 and the sleeve housing 21, it ensures that it plays a reinforcing role.

[0081] The insertion rod 17 is inserted and rotated, which is easier than directly rotating the adjusting screw 2. When it is rotated to the appropriate position, the extended stop 243 blocks and limits the side of the insertion rod 17 to prevent it from rotating back.

[0082] In summary, the hull section positioning auxiliary adjustment fixture of the present invention achieves stepless adjustment of the fixture length through the cooperation of the forward and reverse thread structure of the adjusting screw and the sleeve assembly, which can adapt to the positioning requirements of hull sections of different specifications. The first and second support rings set inside the sleeve assembly automatically engage and drive when the screw is screwed out, causing the second support ring to screw outward while the first support ring screws inward in the opposite direction, effectively filling the cavity formed after the screw is screwed out, enhancing the radial support rigidity of the threaded connection, and avoiding bending deformation caused by excessively long suspended sections of the screw. The third support ring forms a sliding connection with the adjusting screw and the sleeve assembly through a retaining ring and a limiting slider, moving with the screw as it is screwed out and providing full support protection for the screwed-out portion, further improving the overall stability of the fixture. The ground reinforcement connecting plate and the connecting structure allow the two ends of the fixture to be quickly fixed to the jig and structural truss respectively. The cooperation of the U-shaped clamp and the fastening bolts enables a detachable connection with the truss, allowing positioning and fixing to be completed without welding, avoiding welding deformation and paint burn problems. The entire tooling structure is flexible and easy to assemble and disassemble, and all components can be reused, effectively reducing material consumption and subsequent processing time.

[0083] 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 tooling for auxiliary adjustment of hull section positioning, characterized in that, include: The adjusting screw (1) is composed of a positive thread rod (12) and a negative thread rod (13) of equal length spliced ​​together. The positive thread rod (12) and the negative thread rod (13) have opposite thread directions. The adjusting screw (1) has a hole (11) in the center. The sleeve assembly (2) has two sets, which are respectively sleeved on the ends of the positive thread rod (12) and the negative thread rod (13). The sleeve assembly (2) includes a sleeve shell (21). The sleeve shell (21) is hollow inside and has a threaded cavity (211). The threaded cavity (211) has an internal thread (214) that matches the positive thread rod (12) or the negative thread rod (13). Two adjusting steel pipes (3) are provided, which are respectively located at the ends of the sleeve assembly (2); A ground reinforcement connecting plate (4) is provided at the end of one of the adjusting steel pipes (3); The connecting structure is located at the end of another adjusting steel pipe (3), including a sealing plate (5) located at the end of the adjusting steel pipe (3), an ear plate (51) located on the bottom surface of the sealing plate (5), a reinforcing plate (52) hinged to the ear plate (51), a U-shaped clamp (53) located at the bottom of the reinforcing plate (52), and a fastening bolt (54) passing through the U-shaped clamp (53).

2. The tooling according to claim 1, characterized in that, In the sleeve housing (21), a first smooth cavity (212) and a second smooth cavity (213) are sequentially opened at the rear end of the threaded cavity (211). The inner diameter of the first smooth cavity (212) is larger than that of the threaded cavity (211), and the inner diameter of the second smooth cavity (213) is larger than that of the first smooth cavity (212). The second smooth cavity (213) is provided with a first support ring (22), and a second support ring (23) is provided on the inner side of the first support ring (22). The outer side of the second support ring (23) is provided with an external thread (231). The inner side of the first support ring (22) has a thread that matches the external thread (231). A retaining ring (232) is provided on the inner edge of the second support ring (23), and a second helical tooth (233) is provided on the retaining ring (232). Both the positive thread rod (12) and the negative thread rod (13) are provided with a toothed ring (14) at their ends. The toothed ring (14) is provided with a first helical tooth (141). The first helical tooth (141) is oriented towards the insertion hole (11) along the axial direction of the adjusting screw (1). The first helical tooth (141) meshes with the second helical tooth (233).

3. The tooling according to claim 2, characterized in that, The outer diameter of the second support ring (23) is the same as the inner diameter of the first smooth cavity (212), and the outer diameter of the first support ring (22) is the same as the inner diameter of the second smooth cavity (213).

4. The tooling according to claim 2, characterized in that, The friction coefficients μ1 and μ2 between the second support ring (23) and the first support ring (22), i.e. the sliding friction coefficients between the first support ring (22) and the sleeve shell (21), satisfy the following critical conditions: in For thread profile angle, The thread pitch diameter The outer radius of the middle layer, This is the helix angle of the thread.

5. The tooling according to claim 4, characterized in that, A friction-reducing coating or lubricating layer is provided between the second support ring (23) and the first support ring (22) to adjust the value of μ1. A specific roughness or plating layer is provided between the first support ring (22) and the sleeve shell (21) to adjust the value of μ2.

6. The tooling according to claim 3, characterized in that, The positive thread rod (12) has the same thread direction as the external ring thread (231) on the same side, and the negative thread rod (13) has the same thread direction as the external ring thread (231) on the same side. The pitch of the positive thread rod (12) and the negative thread rod (13) is the same, and the pitch of the external ring thread (231) is 1-1.2 times that of the positive thread rod (12) or the negative thread rod (13).

7. The tooling according to claim 6, characterized in that, The insertion hole (11) has a first sliding groove (15) and a second sliding groove (16) on both sides respectively. The sleeve assembly (2) is fitted with a third support ring (24) on the outside. The inner edge of the third support ring (24) is provided with a retaining ring (244). The retaining ring (244) can be inserted into the first sliding groove (15) or the second sliding groove (16) on the same side and rotate.

8. The tooling according to claim 7, characterized in that, The outer side of the sleeve shell (21) has a third sliding groove (215) along the axial direction, and the inner side of the third support ring (24) is provided with a limiting slider (241). The limiting slider (241) can be inserted into the third sliding groove (215) on the same side and slide.

9. The tooling according to claim 8, characterized in that, The third support ring (24) is provided with a limiting insertion hole (242) on the outside, and a stop block (243) is provided in the limiting insertion hole (242), and the stop block (243) can slide in the limiting insertion hole (242); A plug rod (17) is inserted into the socket (11), and the plug rod (17) can be contacted when the limiting socket (242) slides outward.

10. The tooling according to claim 7, characterized in that, The length of the third support ring (24) is greater than or equal to the length of the positive thread rod (12) or the negative thread rod (13), and the inner diameter of the third support ring (24) is equal to the outer diameter of the sleeve shell (21).

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