Split type expansion sleeve tool

Abstract

The utility model relates to the technical field of pump tools, and provides a split type expansion sleeve tool which comprises a flange connecting piece and an expansion sleeve body which are sequentially connected in the axial direction. The expansion sleeve main body comprises a main body connecting part connected with the flange connecting piece and a mounting part extending out from the first end of the main body connecting part, and a central connecting hole penetrating through the mounting part is formed in the center of the expansion sleeve main body; a cone frustum is arranged at the top end of the mounting part; the expansion sleeve is provided with a cone frustum hole matched with the cone, and the installation part is coaxially sleeved with the expansion sleeve; the expansion sleeve is provided with an expansion opening groove, the expansion opening groove is communicated with the cone frustum hole, the expansion opening groove axially extends by a first preset distance from one end, close to the main body connecting part, of the expansion sleeve, and the first preset distance is smaller than the axial length of the expansion sleeve; a fastening mounting hole which is coaxial and communicated with the central connecting hole is formed in the expansion sleeve; and the tensioning piece is arranged in the fastening mounting hole in a penetrating manner and is connected with the central connecting hole.

Description

Technical Field

[0001] This utility model belongs to the field of pump tooling technology, and particularly relates to a split-type expansion sleeve tooling. Background Technology

[0002] The shielding sleeve in a canned motor pump primarily isolates the motor's rotor and stator. It also acts as a pressure vessel to withstand liquid pressure, ensuring that the pump and drive motor are completely enclosed in a space filled with the pumping medium, thus achieving complete leak-free operation.

[0003] The production of shielding sleeves involves stamping and forming first, followed by machining. Because the stamped material is a blank with poor precision, it needs to be precision machined again to meet the usage requirements. When precision machining the outer diameter of the shielding sleeve, the shielding sleeve needs to be fixed to a positioning fixture for precision machining.

[0004] like Figure 1 and Figure 2 As shown, the existing positioning fixture adopts a one-piece expansion sleeve structure. Specifically, the positioning fixture includes a one-piece expansion sleeve 1' and a tension bolt 2'. One end of the one-piece expansion sleeve 1' is installed on a machining equipment, and the other end is a mounting part 11'. The mounting part 11' is cylindrical and is used to install the shielding sleeve. During installation, the cylindrical structure of the shielding sleeve is fitted onto the mounting part 11'. The mounting part 11' has a threaded hole axially opened at its center, and multiple expansion grooves are opened circumferentially along the wall of the threaded hole of the one-piece expansion sleeve 1'. These expansion grooves extend axially from the mounting part 11' of the one-piece expansion sleeve 1'. After the shielding sleeve is installed, the tension bolt 2' is tightened from the threaded hole of the mounting part 11', thereby securing the shielding sleeve by expanding the mounting part 11' of the one-piece expansion sleeve 1'.

[0005] After the aforementioned tension bolt 2' is tightened, the integrated expansion sleeve 1' is opened due to the tightening action of the tension bolt 2'. The mounting part 11' is no longer a cylinder, causing the mounting part 11' to form a conical surface. This results in uneven stress on the shielding sleeve installed on the mounting part 11' along the axial direction of the mounting part 11', which can easily lead to overloading and deformation during finishing. For example, it may become an ellipse after finishing, or the shielding sleeve may fall off during finishing.

[0006] Furthermore, a support portion 12' integrally formed with the mounting portion 11' of the aforementioned integrated expansion sleeve 1' is provided on the mounting portion 11'. This support portion 12' is used to install and support the flange portion of the shielding sleeve. Since the integrated expansion sleeve 1' is an integral structure, it forms a cantilever structure after installation with the external processing equipment. Therefore, a weight-reducing groove 13' is provided on the integrated expansion sleeve 1' and located on the back of the support portion 12' to reduce the concentricity fluctuation of the integrated expansion sleeve 1' during operation. However, because the weight-reducing groove 13' is provided on the integrated expansion sleeve 1', after prolonged operation, the small diameter and low structural strength at the weight-reducing groove 13' can lead to excessive concentricity fluctuation at the end of the integrated expansion sleeve 1' furthest from the machining equipment, making it difficult to meet the processing accuracy requirements of the shielding sleeve. Utility Model Content

[0007] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a split-type expansion sleeve tooling, which can ensure that the shield sleeve is subjected to uniform force along its own axis when clamping the shield sleeve, and effectively ensure the stability of the tensioning.

[0008] To achieve this objective, the present invention adopts the following technical solution:

[0009] A split-type expansion sleeve tooling, comprising:

[0010] Flange connectors and expansion sleeve bodies are connected sequentially along the axial direction;

[0011] The expansion sleeve body includes a main body connecting part connected to the flange connector and a mounting part extending from the first end of the main body connecting part. A central connecting hole penetrating the mounting part is opened in the center of the expansion sleeve body; a truncated cone is provided at the top of the mounting part.

[0012] An expansion sleeve is provided with a truncated cone hole that mates with a cone, and the expansion sleeve is coaxially sleeved on the mounting part;

[0013] The expansion sleeve is provided with an expansion groove, the expansion groove is connected to the truncated cone hole, and the expansion groove extends axially from one end of the expansion sleeve near the main body connection part by a first preset distance, the first preset distance being less than the axial length of the expansion sleeve.

[0014] The expansion sleeve has a fastening mounting hole that is coaxial with and communicates with the central connecting hole;

[0015] A tensioning element, which passes through the fastening mounting hole and is connected to the central connecting hole.

[0016] Preferably, the split-type expansion sleeve tooling further includes a positioning member sleeved on the mounting part and coaxially arranged with the mounting part, the positioning member being connected to the main body connecting part.

[0017] Preferably, the second end of the main body connecting portion is recessed and provided with a first mounting groove;

[0018] The split-type expansion sleeve tooling also includes a fastening connector, which is disposed in the first mounting groove;

[0019] The central connecting hole includes a through hole and a threaded hole coaxially disposed with the through hole. The through hole is provided at the center of the expansion sleeve body, and the threaded hole is provided on the fastening connector.

[0020] The tensioning member passes through the fastening mounting hole and the through hole in sequence, and is threadedly connected to the threaded hole.

[0021] Preferably, the flange connector has a central mounting hole that communicates with and is coaxially arranged with the first mounting groove;

[0022] The split-type expansion sleeve tooling also includes a tie rod connector, which is disposed in the central mounting hole;

[0023] One end of the pull rod connector is connected to an external processing device, and the other end is connected to the fastening connector. The pull rod connector can drive the fastening connector to reciprocate along the axial direction for a second preset distance.

[0024] Preferably, the split-type expansion sleeve tooling further includes a limiting member connected to one end of the main body connection portion near the flange connection member, the limiting member being used to limit the axial displacement of the fastening connection member.

[0025] Preferably, the split-type expansion sleeve tooling further includes a guide assembly, which is disposed between the fastening connector and the expansion sleeve body;

[0026] The guide assembly includes a guide slot and a guide post arranged along the axial direction. The guide post slides in cooperation with the guide slot. The guide slot is provided on one of the expansion sleeve body and the fastening connector, and the guide post is provided on the other.

[0027] Preferably, the tie rod connector is threadedly connected to the fastening connector.

[0028] Preferably, the end of the tie rod connector that connects to the external processing equipment is provided with an internal threaded hole.

[0029] Preferably, the flange connector is connected to the external processing equipment by a first screw, which is evenly distributed along the circumference of the flange connector.

[0030] Preferably, the main body connecting part is connected to the flange connecting part by a second screw, which is evenly distributed along the circumference of the main body connecting part.

[0031] Compared with the prior art, this utility model has the following advantages: The top of the mounting part of the expansion sleeve body in this utility model is provided with a truncated cone, and the expansion sleeve is provided with a truncated cone hole that mates with the truncated cone. Furthermore, because the expansion sleeve has an expansion groove, the tensioning member passes through the expansion sleeve and connects to the central connecting hole. As the expansion sleeve moves axially along the mounting part, the expansion groove of the expansion sleeve is expanded, and the overall diameter of the expansion sleeve increases, thereby tightening the shielding sleeve mounted on the mounting part. Because the expansion sleeve and the mounting part achieve tightening through the mutual cooperation of the truncated cone and the truncated cone hole, the force on the shielding sleeve is uniform across the entire circumferential surface of the expansion sleeve. Therefore, after the shielding sleeve is tightened, the concentricity runout value along the axial direction is small. After precision machining, the shielding sleeve will not produce ellipticity, nor will it suffer from insufficient strength due to reduced wall thickness in some areas, thus reducing the product defect rate. Attached Figure Description

[0032] Figure 1 This is a structural diagram of a one-piece tooling in the prior art;

[0033] Figure 2 This is a schematic diagram of the structure of a conjoined expansion sleeve in the prior art;

[0034] Figure 3 This is a schematic diagram of the split-type expansion sleeve tooling in this utility model;

[0035] Figure 4 This is a schematic diagram of the expansion sleeve in this utility model.

[0036] Among them, 1' is the integrated expansion sleeve; 11' is the mounting part; 12' is the support part; 13' is the weight reduction groove; and 2' is the tension bolt.

[0037] 1. Expansion sleeve main body assembly; 100. Center connecting hole; 11. Flange connector; 111. Center mounting hole; 12. Expansion sleeve main body; 121. Mounting part; 122. Main body connecting part; 123. First mounting groove; 124. Second mounting groove; 13. Fastening connector; 14. Tie rod connector; 15. Limiting component; 16. Guide assembly; 161. Guide post; 162. Guide groove hole; 17. First screw; 18. Second screw; 2. Expansion sleeve; 21. Expansion groove; 3. Tensioning component; 4. Positioning component; 5. Shielding sleeve. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0040] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0041] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for 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 limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0042] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0043] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0045] like Figure 3 and Figure 4 As shown, this embodiment provides a split-type expansion sleeve tooling, including a flange connector 11 and an expansion sleeve body 12, an expansion sleeve 2, and a tensioning member 3 connected sequentially along the axial direction; wherein, the expansion sleeve body 12 includes a main body connecting portion 122 connected to the flange connector 11 and a mounting portion 121 extending from a first end of the main body connecting portion 122. The first end is the end of the main body connecting portion 122 away from the flange connector 11, and a central connecting hole 100 penetrating the mounting portion 121 is opened in the center of the expansion sleeve body 12. The top end of the mounting portion 121 is provided with a truncated cone.

[0046] The expansion sleeve 2 is provided with a truncated cone hole that mates with the cone, and the expansion sleeve 2 is coaxially sleeved on the mounting part 121. The expansion sleeve 2 is provided with an expansion groove 21, which communicates with the truncated cone hole, and the expansion groove 21 extends axially from one end of the expansion sleeve 2 near the main body connecting part 122 by a first preset distance, which is less than the axial length of the expansion sleeve 2.

[0047] The expansion sleeve 2 has a fastening mounting hole that is coaxial with and connected to the central connecting hole 100.

[0048] The tensioning member 3 passes through the fastening mounting hole and is connected to the center connecting hole 100.

[0049] In this embodiment, the top end of the mounting portion 121 of the expansion sleeve body 12 is provided with a truncated cone, and the expansion sleeve 2 is provided with a truncated cone hole that mates with the truncated cone. Furthermore, because the expansion sleeve 2 has an expansion groove 21, the tensioning member 3 passes through the expansion sleeve 2 and connects to the central connecting hole 100. As the expansion sleeve 2 moves axially along the mounting portion 121, the expansion groove 21 of the expansion sleeve 2 is expanded, and the overall diameter of the expansion sleeve 2 increases, thereby tightening the shielding sleeve 5 mounted on the mounting portion 121.

[0050] Because the expansion sleeve 2 and the mounting part 121 achieve tensioning through the interlocking of a truncated cone and a truncated cone hole, the shielding sleeve 5 experiences uniform force across the entire circumferential surface of the expansion sleeve 2. Therefore, after the shielding sleeve 5 is tightened, the concentricity runout along the axial direction is small. After precision machining, the shielding sleeve 5 will not produce ellipticity or have insufficient strength due to reduced wall thickness in some areas, thus reducing the product defect rate.

[0051] The aforementioned shielding sleeve 5 is applied to the pump. When the pump starts working, there will be no jamming problem after the rotor is assembled, and the pump will work smoothly. The wall thickness of the shielding sleeve 5 is uniform, which ensures the pressure bearing capacity of the shielding sleeve 5, prevents cracking, and improves the service life of the pump.

[0052] Preferably, the split-type expansion sleeve tooling further includes a positioning element 4 that is sleeved on the mounting part 121 and coaxially arranged with the mounting part 121, and the positioning element 4 is connected to the main body connection part 122. When installing the shielding sleeve 5, the shielding sleeve 5 is sleeved on the mounting part 121 and positioned by the positioning element 4, which further ensures the coaxiality of the shielding sleeve 5 and the mounting part 121 after installation.

[0053] The aforementioned positioning component 4 is separately configured with flange connector 11 and expansion sleeve body 12. Flange connector 11 is connected to external processing equipment, body connection part 122 is connected to flange connector 11, and positioning component 4 and flange connector 11 are directly connected. Since there is no need to set a weight reduction groove, the structural strength of the tooling is guaranteed. The problem of excessive concentricity runout of the tooling due to the deterioration of structural strength caused by long-term use of the tooling will not occur. It can meet the precision machining requirements of shielding sleeve 5 and solves the problem of uneven thickness of shielding sleeve 5 after processing due to insufficient structural strength of tooling in the prior art.

[0054] The specific structure of the shielding sleeve 5 includes a sleeve portion, a flange groove portion, and an edge portion connected sequentially along the axial direction. The edge portion is folded outward at 90° from the edge of the flange groove portion.

[0055] The sleeve portion is cylindrical, and the flange portion includes an inclined transition surface that connects to the sleeve portion and an L-shaped groove portion. The L-shaped groove portion is connected to the inclined transition surface and is located on the outer periphery of the inclined transition surface. The edge portion is folded outward at 90° from the edge of the L-shaped groove portion.

[0056] Preferably, the positioning member 4 has an annular receiving groove for accommodating the flange recess, and the L-shaped recess abuts against the bottom of the annular receiving groove. The edge abuts against the end face of the positioning member 4.

[0057] The shielding sleeve 5 is positioned by setting the positioning component 4, thereby ensuring the installation stability of the shielding sleeve 5 during the precision machining process.

[0058] Preferably, the flange connector 11 has a positioning groove at one end near the expansion sleeve 2, and the expansion sleeve 2 is installed in the positioning groove. The positioning groove positions the expansion sleeve 2. At the same time, the installation of the two reduces the axial dimension of the overall tooling and reduces the impact on the concentricity of the mounting part 121. In addition, the above structure is more compact after installation and occupies less space.

[0059] Preferably, the flange connector 11 is fastened to the external processing equipment by the first screw 17, ensuring the connection strength between the flange connector 11 and the external processing equipment, and facilitating the disassembly and assembly of the tooling. More preferably, the first screw 17 is evenly distributed circumferentially on the flange connector 11 with the axis of the mounting part 121 as the center, so as to ensure the connection strength between the flange connector and the external processing equipment, and the uniform force on the flange connector.

[0060] Preferably, the main body connecting part 122 and the flange connecting part 11 are fastened together by a second screw 18. More preferably, the second screw 18 is evenly distributed in the circumferential direction on the main body connecting part 122 with the axis of the mounting part 121 as the center, to ensure the connection strength between the main body connecting part 122 and the flange connecting part 11, and the uniform force on the main body connecting part 122.

[0061] Preferably, a first mounting groove 123 is recessed at the second end of the main body connecting portion 122, and the second end is the end of the main body connecting portion 122 near the flange connector 11. The split-type expansion sleeve tooling also includes a fastening connector 13, which is disposed in the first mounting groove 123. The central connecting hole 100 includes a through hole and a threaded hole coaxially disposed with the through hole. The expansion sleeve body 12 has a through hole at its center, and the fastening connector 13 has a threaded hole.

[0062] The tensioning member 3 passes through the fastening mounting hole and the through hole in sequence, and is threaded into the threaded hole.

[0063] The tensioning member 3 is fastened to the fastening connector 13, thereby tightening the shielding sleeve 5 installed on the mounting part 121. The fastening connector 13 and the expansion sleeve body 12 are separately set. If the fastening connector 13 fails, it is easy to process the threaded hole separately, and it is easy to replace and repair the fastening connector 13 when it fails.

[0064] Preferably, the flange connector 11 has a central mounting hole 111 communicating with the first mounting groove 123, and the central mounting hole 111 and the first mounting groove 123 are coaxially arranged. The split expansion sleeve tooling also includes a tie rod connector 14, which is disposed in the central mounting hole 111. One end of the tie rod connector 14 is connected to an external processing device, and the other end is threadedly connected to the fastening connector 13. The tie rod connector 14 can drive the fastening connector 13 to reciprocate axially a second preset distance.

[0065] In this embodiment, when it is necessary to adjust the axial position of the fastening connector 13 within the first mounting groove 123, the pull rod connector 14 drives the fastening connector 13 to move axially, thereby adjusting the axial position of the fastening connector 13 within the first mounting groove 123, and thus controlling the tension of the mounting part 121 on the shielding sleeve 5 mounted thereon. In this embodiment, the pull rod connector 14 is connected to the pull rod of the external processing equipment. The pull rod is located at the center of the external processing equipment and can rotate independently. The pull rod can drive the pull rod connector 14 to rotate synchronously, thereby driving the fastening connector 13 to move axially, and thus achieving the purpose of adjusting the position of the fastening connector 13 within the first mounting groove 123.

[0066] After the relative positions of the tie rod connector 14 and the fastening connector 13 are adjusted, the external processing equipment drives the split expansion sleeve tool to rotate synchronously and begin processing the shielding sleeve 5 installed on the mounting part 121.

[0067] Preferably, the tie rod connector 14 is threadedly connected to the fastening connector 13, facilitating the assembly and disassembly of the tie rod connector 14 from the external processing equipment. Specifically, the end of the tie rod connector 14 that connects to the external processing equipment is provided with an internal threaded hole, and the tie rod connector 14 is threadedly connected to the external processing equipment.

[0068] Preferably, the split expansion sleeve tooling further includes a limiting member 15, which is connected to one end of the main body connection portion 122 near the flange connection member 11. The limiting member 15 is used to limit the axial position of the fastening connection member 13.

[0069] The limiting member 15 restricts the fastening connector 13 from approaching the flange connector 11 along the axial direction to the extreme position, preventing the tension of the mounting part 121 from being too large and causing damage to the shielding sleeve 5.

[0070] Preferably, the main body connecting part 122 has a second mounting groove 124 at one end near the flange connector 11. The second mounting groove 124 is coaxial with the first mounting groove 123. Both the first mounting groove 123 and the second mounting groove 124 are circular grooves, and the diameter of the second mounting groove 124 is larger than the diameter of the first mounting groove 123.

[0071] The second mounting groove 124 is used to install the positioning element 4 to reduce the axial dimension of the flange connector 11 and the expansion sleeve body 12 after installation.

[0072] Preferably, the split-type expansion sleeve tooling further includes a guide assembly 16, which is disposed between the fastening connector 13 and the expansion sleeve body 12. The guide assembly 16 includes a guide slot 162 arranged axially and a guide post 161 that slides in cooperation with the guide slot 162. The guide slot 162 is provided on one of the expansion sleeve body 12 and the fastening connector 13, and the guide post 161 is provided on the other.

[0073] By setting the guide component 16 to guide the fastening connector 13 to move axially, it is ensured that the axis of the threaded hole on it is coaxial with the axis of the tensioner 3, so that the tensioner 3 can be smoothly screwed into the threaded hole.

[0074] Preferably, an axial guide slot 162 is provided on the expansion sleeve body 12, and a guide post 161 is installed on the fastening connector 13. The guide post 161 can reciprocate along the guide slot 162.

[0075] In this embodiment, each component of the split-type expansion sleeve tooling can be replaced individually, making it highly adaptable. By replacing components, tooling for similar products can be shared, significantly reducing production costs. Furthermore, after positioning the product, it offers high precision, strong stability, and a long service life.

[0076] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A split-type expansion sleeve tooling, characterized in that, include: A flange connector (11) and an expansion sleeve body (12) are connected sequentially along the axial direction; The expansion sleeve body (12) includes a main body connecting part (122) connected to the flange connector (11) and a mounting part (121) extending from the first end of the main body connecting part (122). The expansion sleeve body (12) has a central connecting hole (100) that penetrates the mounting part (121) at its center. The top end of the mounting part (121) is provided with a truncated cone. The expansion sleeve (2) is provided with a truncated cone hole that mates with the cone, and the expansion sleeve (2) is coaxially sleeved on the mounting part (121); The expansion sleeve (2) is provided with an expansion groove (21), the expansion groove (21) is connected to the truncated cone hole, and the expansion groove (21) extends axially from one end of the expansion sleeve (2) near the main body connecting part (122) by a first preset distance, the first preset distance being less than the axial length of the expansion sleeve (2); The expansion sleeve (2) has a fastening mounting hole that is coaxial with and connected to the central connecting hole (100); The tensioning member (3) passes through the fastening mounting hole and is connected to the central connecting hole (100).

2. The split-type expansion sleeve tooling according to claim 1, characterized in that, The split-type expansion sleeve tooling also includes a positioning member (4) sleeved on the mounting part (121) and coaxially arranged with the mounting part (121), and the positioning member (4) is connected to the main body connecting part (122).

3. The split-type expansion sleeve tooling according to claim 2, characterized in that, The second end of the main body connecting part (122) is recessed and has a first mounting groove (123); The split-type expansion sleeve tooling also includes a fastening connector (13), which is disposed in the first mounting groove (123); The central connecting hole (100) includes a through hole and a threaded hole coaxially disposed with the through hole. The through hole is provided in the center of the expansion sleeve body (12), and the threaded hole is provided on the fastening connector (13). The tensioning member (3) passes through the fastening mounting hole and the through hole in sequence, and is threadedly connected to the threaded hole.

4. The split-type expansion sleeve tooling according to claim 3, characterized in that, The flange connector (11) has a central mounting hole (111) that communicates with and is coaxially arranged with the first mounting groove (123); The split-type expansion sleeve tooling also includes a tie rod connector (14), which is disposed in the central mounting hole (111); One end of the pull rod connector (14) is connected to an external processing device, and the other end is connected to the fastening connector (13). The pull rod connector (14) can drive the fastening connector (13) to reciprocate along the axial direction for a second preset distance.

5. The split-type expansion sleeve tooling according to claim 4, characterized in that, The split-type expansion sleeve tooling also includes a limiting member (15), which is connected to one end of the main body connection part (122) near the flange connection part (11). The limiting member (15) is used to limit the axial displacement of the fastening connection part (13).

6. The split-type expansion sleeve tooling according to claim 3, characterized in that, The split-type expansion sleeve tooling also includes a guide component (16), which is disposed between the fastening connector (13) and the expansion sleeve body (12); The guide assembly (16) includes a guide slot (162) and a guide post (161) arranged along the axial direction. The guide post (161) slides in cooperation with the guide slot (162). The guide slot (162) is provided on one of the expansion sleeve body (12) and the fastening connector (13), and the guide post (161) is provided on the other.

7. The split-type expansion sleeve tooling according to claim 4, characterized in that, The pull rod connector (14) is threadedly connected to the fastening connector (13).

8. The split-type expansion sleeve tooling according to claim 4, characterized in that, The end of the tie rod connector (14) that connects to the external processing equipment is provided with an internal threaded hole.

9. The split-type expansion sleeve tooling according to claim 4, characterized in that, The flange connector (11) is connected to the external processing equipment by a first screw (17), which is evenly distributed along the circumference of the flange connector (11).

10. The split-type expansion sleeve tooling according to claim 4, characterized in that, The main body connecting part (122) is connected to the flange connecting part (11) by a second screw (18), which is evenly distributed around the circumference of the main body connecting part (122).

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