A boring machine tapping device

Abstract

The utility model provides a boring machine tapping device, including tail handle and the clamping piece of connecting in tail handle one end, the clamping piece is used for when tail handle and boring machine main shaft connect, the clamping piece is close to boring machine main shaft connecting end, to further fix tail handle, the other end of tail handle is connected with sliding sleeve, and the sliding sleeve is connected with the clamping sleeve spare of sliding connection on sliding sleeve, and the clamping sleeve spare includes the clamping inner cover of sliding connection in sliding sleeve and the clamping outer cover of sliding connection outside sliding sleeve, and the tap is connected on the clamping inner cover. By setting the clamping piece in one end of tail handle, when tail handle and boring machine main shaft connect, the clamping piece can be close to boring machine main shaft connecting end. This design can realize the function of long shaft tapping in end face, solve the problem that the drilling machine cannot process long shaft end face drilling, and the boring machine tapping device is simple in structure and operation, low in processing cost and high in working efficiency.

Description

Technical Field

[0001] This utility model relates to the field of boring machine tapping, and specifically to a boring machine tapping device. Background Technology

[0002] With the continuous and in-depth research and development of machining technology, drilling and tapping processes in the manufacturing of large products mainly rely on equipment such as drilling machines, gantry milling machines, and CNC machining centers. However, existing processing methods have revealed many problems for machining large shaft parts. Ordinary radial drilling machines, limited by their structure and working principle, cannot effectively clamp large shaft parts, making drilling and tapping operations difficult. While using dedicated machine tools for drilling and tapping large shaft parts can meet processing requirements, the high research, development, manufacturing, and maintenance costs of these dedicated machine tools lead to a significant increase in equipment investment for enterprises, reducing the market competitiveness of their products.

[0003] Therefore, it is very necessary to provide a boring machine tapping device to solve the above-mentioned technical problems. Utility Model Content

[0004] Based on the above description, this utility model provides a boring machine tapping device to solve the problem that the use of special machine tools for the processing of large shaft parts in the prior art results in excessively high operating costs.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A boring machine tapping device includes a tail shank and a clamping member connected to one end of the tail shank. The clamping member is used to press against the connecting end of the boring machine spindle when the tail shank is connected to the boring machine spindle, so as to further fix the tail shank. A sliding sleeve is connected to the other end of the tail shank. A clamping kit is slidably connected to the sliding sleeve. The clamping kit includes a clamping inner sleeve slidably connected inside the sliding sleeve and a clamping outer sleeve slidably connected outside the sliding sleeve. A tap is connected to the clamping inner sleeve.

[0006] Furthermore, the tailstock is provided with an annular sliding cavity, and a plurality of handle holes are opened at one end of the tailstock. The clamping member includes a clamping block and a clamping rod connected to the clamping block. The clamping rod is provided corresponding to the handle holes and passes through the handle holes.

[0007] Furthermore, one end of the clamping rod is also connected to a clamping ring, which is slidably connected within the annular cavity.

[0008] Furthermore, the clamping component also includes a clamping spring, one end of which is connected to the tailstock, and the other end of which is connected to the clamping block. The clamping block is used to securely abut against the boring machine spindle under the action of the clamping spring.

[0009] Furthermore, the sliding sleeve is provided with a plurality of first strip-shaped through holes, and a clamping connecting frame is connected between the clamping inner sleeve and the clamping outer sleeve. The clamping connecting frame passes through the first strip-shaped through holes. The clamping connecting frame is used to connect the outer clamping outer sleeve and the inner clamping inner sleeve, and to limit the clamping outer sleeve and the clamping inner sleeve so that the clamping outer sleeve and the clamping inner sleeve can only slide along the axial direction.

[0010] Furthermore, the clamping kit also includes a sleeve spring sleeved on the sliding sleeve. One end of the sleeve spring is connected to the clamping outer sleeve, and the other end of the sleeve spring is connected to the tail shank. The sleeve spring is used to push the tap under the action of the sleeve spring to achieve the tapping operation.

[0011] Furthermore, a pad is connected inside the sliding sleeve, and the pad abuts against the clamping inner sleeve, the pad being used to make flexible contact with the clamping inner sleeve.

[0012] Furthermore, the clamping outer sleeve is threadedly connected to a first clamping screw, which passes through the sliding sleeve and abuts against the clamping inner sleeve.

[0013] Furthermore, the sliding sleeve has a second strip-shaped through hole, and the first clamping screw passes through the second strip-shaped through hole.

[0014] Furthermore, one end of the clamping inner sleeve is connected to a second clamping screw, which abuts against the tap.

[0015] Compared with the prior art, the technical solution of this application has the following beneficial technical effects: By installing a clamping component at one end of the tail shank, the tail shank can tightly abut against the connecting end of the boring machine spindle when connected to it. This design enables tapping of long shafts on their end faces, solving the problem of drilling long shafts that cannot be machined on the end faces by drilling machines. The boring machine tapping device has a simple structure and operation, low processing cost, and high working efficiency. At the same time, compared to traditional methods relying solely on threads or simple connections, it significantly increases the connection strength and stability between the tail shank and the boring machine spindle, effectively avoiding problems such as loosening or detachment of the tail shank due to vibration or high torque during tapping, ensuring the continuity and safety of the tapping operation. It also solves the problem of excessively high operating costs associated with using dedicated machine tools for machining large shaft parts in existing technologies. Attached Figure Description

[0016] Figure 1 One of the overall structural schematic diagrams of a boring machine tapping device provided in this embodiment of the present utility model; Figure 2A second schematic diagram of the overall structure of a boring machine tapping device provided for an embodiment of this utility model; Figure 3 A schematic diagram of the structure of a spring for removing the sleeve in a boring machine tapping device provided in this embodiment of the utility model; Figure 4 A side view of a boring machine tapping device provided in an embodiment of this utility model; Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure at point AA; Figure 6 for Figure 4 Schematic diagram of the cross-sectional structure at point BB; Figure 7 for Figure 6 Enlarged structural diagram at point E; Figure 8 for Figure 4 Schematic diagram of the cross-sectional structure at point CC; Figure 9 for Figure 8 Enlarged structural diagram at point Q; Figure 10 for Figure 8 A magnified structural diagram of point W in the middle.

[0017] The attached diagram lists the components represented by each number as follows: 1. Tailstock; 11. Annular sliding cavity; 12. Handle hole; 2. Clamping component; 21. Clamping block; 22. Clamping rod; 23. Clamping ring; 24. Clamping spring; 3. Sliding sleeve; 31. First strip-shaped through hole; 32. Second strip-shaped through hole; 4. Clamping kit; 41. Inner clamping sleeve; 42. Outer clamping sleeve; 43. Clamping connecting frame; 44. Sleeve spring; 45. First clamping screw; 46. Second clamping screw 5. Tap; 6. Spacer blocks. Detailed Implementation

[0018] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0020] It is understood that spatial relation terms such as "below," "under," "below," "below," "above," "above," etc., can be used here to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, the element or feature described as "below" or "below" of the other element or feature will be oriented "above" the other element or feature. Therefore, the exemplary terms "below" and "below" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein will be interpreted accordingly.

[0021] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediary element. In the following embodiments, "connection" should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have the transmission of electrical signals or data between them.

[0022] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0023] like Figures 1 to 10 As shown, a boring machine tapping device includes a tail shank 1 and a clamping member 2 connected to one end of the tail shank 1. The clamping member 2 is used to press against the connecting end of the boring machine spindle when the tail shank 1 is connected to the boring machine spindle to further fix the tail shank 1. The other end of the tail shank 1 is connected to a sliding sleeve 3. A clamping kit 4 is slidably connected to the sliding sleeve 3. The clamping kit 4 includes a clamping inner sleeve 41 slidably connected inside the sliding sleeve 3 and a clamping outer sleeve 42 slidably connected outside the sliding sleeve 3. A tap 5 is connected to the clamping inner sleeve 41.

[0024] In this embodiment, by providing a clamping member 2 at one end of the tail shank 1, the clamping member 2 can tightly abut against the connecting end of the boring machine spindle when the tail shank 1 is connected to the boring machine spindle. This design enables the function of tapping long shafts on their end faces, solving the problem that drilling machines cannot process drilling holes on the end faces of long shafts. The boring machine tapping device has a simple structure and operation, low processing cost, and high working efficiency. At the same time, compared with the traditional method that relies solely on threads or simple connections, it significantly increases the connection strength and stability between the tail shank 1 and the boring machine spindle, effectively avoiding problems such as loosening or falling off of the tail shank due to vibration or high torque during the tapping process, ensuring the continuity and safety of the tapping operation.

[0025] Furthermore, the sliding sleeve 3 and the clamping kit 4 connected to the other end of the tailstock 1 are slidably connected, with the inner clamping sleeve 41 slidably connected inside the sliding sleeve 3 and the outer clamping sleeve 42 slidably connected outside the sliding sleeve 3. This structural design allows the entire device to maintain good overall rigidity while possessing a certain degree of flexibility. During the tapping process, the sliding engagement between the sliding sleeve 3 and the clamping kit 4 can accurately transmit torque, reduce energy loss, and improve tapping efficiency and machining accuracy.

[0026] In some embodiments, the tail shank 1 is provided with an annular sliding cavity 11, and a plurality of shank holes 12 are provided at one end of the tail shank 1. The clamping member 2 includes a clamping block 21 and a clamping rod 22 connected to the clamping block 21. The clamping rod 22 is provided corresponding to the shank holes 12 and passes through the shank holes 12.

[0027] In some embodiments, one end of the clamping rod 22 is also connected to a clamping ring 23, which is slidably connected to the annular sliding cavity 11.

[0028] In some embodiments, the clamping member 2 further includes a clamping spring 24, one end of which is connected to the tail shank 1, and the other end of which is connected to the clamping block 21. The clamping block 21 is used to securely abut against the boring machine spindle under the action of the clamping spring 24.

[0029] In this embodiment, an annular sliding cavity 11 is provided inside the tailstock 1, and several shank holes 12 are formed. The clamping rod 22 of the clamping member 2 passes through the shank holes 12, and the clamping ring 23 is slidably connected inside the annular sliding cavity 11. This structural design makes the connection between the clamping member 2 and the tailstock 1 tighter and more precise, ensuring the stable position of the clamping member 2 on the tailstock 1, laying the foundation for a stable connection with the boring machine spindle. When the clamping block 21 abuts against the boring machine spindle, the cooperation of the clamping rod 22 and the clamping ring 23 can effectively distribute the force, avoid local stress concentration, thereby enhancing the stability of the entire connection structure, reducing the problem of connection loosening caused by vibration or external force during tapping, and improving the stability and reliability of machining.

[0030] In addition, the clamping component 2 is equipped with a clamping spring 24, one end of which is connected to the tail shank 1 and the other end is connected to the clamping block 21. During installation, the clamping spring 24 is in a compressed state, generating an outward elastic force, which causes the clamping block 21 to automatically and securely abut against the boring machine spindle under the action of the spring force. This automatic abutment method is not only easy to operate, eliminating the need for manual application of large forces to ensure a tight connection, but also allows for adaptive adjustment according to the actual size and shape of the boring machine spindle, ensuring a good abutment effect under different working conditions. This further improves the stability and reliability of the connection and reduces the risk of machining errors and equipment damage caused by a loose connection.

[0031] In some embodiments, the sliding sleeve 3 is provided with a plurality of first strip-shaped through holes 31, and a clamping connecting frame 43 is connected between the clamping inner sleeve 41 and the clamping outer sleeve 42. The clamping connecting frame 43 passes through the first strip-shaped through holes 31. The clamping connecting frame 43 is used to connect the outer clamping outer sleeve 42 and the inner clamping inner sleeve 41, and to limit the clamping outer sleeve 42 and the clamping inner sleeve 41 so that the clamping outer sleeve 42 and the clamping inner sleeve 41 can only slide along the axial direction.

[0032] In some embodiments, the clamping kit 4 further includes a sleeve spring 44 sleeved on the sliding sleeve 3. One end of the sleeve spring 44 is connected to the clamping outer sleeve 42, and the other end of the sleeve spring 44 is connected to the tail shank 1. The sleeve spring 44 is used to push the tap 5 to achieve tapping operation under the action of the sleeve spring 44.

[0033] In this embodiment, several first strip-shaped through holes 31 provided on the sliding sleeve 3 are cleverly matched with the clamping connecting frame 43 between the clamping inner sleeve 41 and the clamping outer sleeve 42. The clamping connecting frame 43 passes through the first strip-shaped through holes 31. This structure plays a precise limiting role for the clamping outer sleeve 42 and the clamping inner sleeve 41, ensuring that they can only slide along the axial direction. This effectively avoids machining errors caused by radial wobbling or offset during the tapping process, greatly improving the accuracy and stability of tapping, and making the machined threads more regular and accurate, meeting the requirements of high-precision machining.

[0034] Additionally, a sleeve spring 44, fitted onto the sliding sleeve 3, is connected at one end to the clamping outer sleeve 42 and at the other end to the tail shank 1. During tapping operations, the sleeve spring 44 utilizes its own elastic force to continuously and stably push the clamping outer sleeve 42, thereby driving the tap 5 forward for tapping. Compared to traditional mechanical drive methods, this spring-assisted propulsion method has the advantages of fast response and smooth operation. It can automatically adjust the propulsion force according to changes in resistance during the tapping process, reducing the complexity and uncertainty of manual operation, significantly improving tapping efficiency, and also helping to extend the service life of the tap 5.

[0035] In some embodiments, a pad 6 is connected inside the sliding sleeve 3, and the pad 6 abuts against the clamping inner sleeve 41. The pad 6 is used to make flexible contact with the clamping inner sleeve 41.

[0036] In this embodiment, a pad 6 is connected inside the sliding sleeve 3 and abuts against the clamping inner sleeve 41. This design achieves flexible contact between the clamping inner sleeve 41 and the sliding sleeve 3. Compared to rigid contact, flexible contact can effectively disperse and buffer the stress generated during tapping. When the tap 5 experiences significant resistance or vibration, the pad 6 can absorb and release some energy through its own elastic deformation, preventing stress concentration in a localized area of ​​the clamping inner sleeve 41. This reduces wear, deformation, and even damage to the clamping inner sleeve 41 caused by stress concentration, extends the service life of the clamping inner sleeve 41, and improves the reliability and stability of the entire tapping device.

[0037] In some embodiments, a first clamping screw 45 is threadedly connected to the clamping outer sleeve 42, the first clamping screw 45 passing through the sliding sleeve 3 and abutting against the clamping inner sleeve 41.

[0038] In some embodiments, the sliding sleeve 3 is provided with a second strip-shaped through hole 32, and the first clamping screw 45 passes through the second strip-shaped through hole 32.

[0039] In this embodiment, a second strip-shaped through hole 32 is provided on the sliding sleeve 3, through which the first clamping screw 45 passes. The second strip-shaped through hole 32 provides the first clamping screw 45 with a movement space in a specific direction, so that when the clamping outer sleeve 42 and the clamping inner sleeve 41 slide axially, the first clamping screw 45 can move smoothly along with them without being obstructed by the sliding sleeve 3.

[0040] In some embodiments, one end of the clamping inner sleeve 41 is connected to a second clamping screw 46, and the second clamping screw 46 abuts against the tap 5.

[0041] In this embodiment, the second clamping screw 46 is used to lock the tap 5 during tightening to ensure the stability of the tapping process. Additionally, a shaped groove is provided on the inner wall of the clamping sleeve 41, and a corresponding shaped protrusion is provided on the tap 5. The shaped protrusion engages with the shaped groove (the shaped protrusion can be a triangle, quadrilateral, pentagon, or other polygon) to further fix the tap 5, which should also fall within the scope of protection of this application.

[0042] Example 1: A boring machine tapping device includes a tail shank 1, with an annular sliding cavity 11 machined inside the tail shank 1, and a plurality of shank holes 12 evenly distributed at one end. A clamping rod 22 is passed through the shank holes 12, with one end of the clamping rod 22 fixedly connected to a clamping block 21, and the other end connected to a clamping ring 23. The clamping ring 23 can slide within the annular sliding cavity 11, ensuring that the clamping rod 22 can make small-amplitude extension and retraction movements along the shank holes 12. Preferably, one end of the clamping spring 24 is fixed to a specific position on the inner wall of the tailstock 1, such as by welding or screws, and the other end is connected to the clamping block 21. In its natural state, the clamping spring 24 is in a compressed state, providing the clamping block 21 with a thrust toward the outside of the tailstock 1.

[0043] Preferably, the sliding sleeve 3 is installed at the other end of the tail shank 1, and the two can be tightly connected by threaded connection, key connection or other suitable fixing methods to ensure that no relative rotation or displacement occurs during the tapping process.

[0044] Preferably, a clamping outer sleeve 42 is fitted onto the outer surface of the sliding sleeve 3, allowing it to slide axially along the outer wall of the sliding sleeve 3. A clamping inner sleeve 41 is installed inside the sliding sleeve 3, similarly allowing it to slide axially along the inner wall of the sliding sleeve 3. Preferably, the clamping connecting bracket 43 is passed through the first strip-shaped through hole 31 on the sliding sleeve 3 in sequence, and the clamping outer sleeve 42 and the clamping inner sleeve 41 are fixedly connected, restricting the two to slide relative to each other in the axial direction only, so as to prevent radial shaking during tapping. Preferably, the sleeve spring 44 is sleeved on the sliding sleeve 3, with one end fixed to the clamping sleeve 42, such as by welding or by engaging with a boss, and the other end fixed to the tail shank 1. The sleeve spring 44 is also in a compressed state in the initial state, providing a thrust to the clamping sleeve 42 in the direction away from the tail shank 1. Preferably, a pad 6 is installed inside the sliding sleeve 3 near the end of the tail shank 1. The pad 6 can be made of elastic materials such as rubber or polyurethane, so that it fits tightly against the end face of the clamping inner sleeve 41, thereby playing a role in buffering and shock absorption.

[0045] Preferably, the tap 5 is inserted into the mounting hole at one end of the clamping inner sleeve 41, and the second clamping screw 46 is rotated to gradually tighten the shank of the tap 5, thereby using friction to firmly fix the tap 5 onto the clamping inner sleeve 41. Preferably, according to the specifications and processing requirements of the tap 5, the relative positions of the clamping outer sleeve 42 and the clamping inner sleeve 41 are adjusted. By rotating the first clamping screw 45, it is made to pass through the second strip-shaped through hole 32 on the sliding sleeve 3 and press against the clamping inner sleeve 41, thus fixing the relative positions of the two and ensuring the stability of the tap 5 during tapping.

[0046] Preferably, the tail shank 1 of the assembled boring machine tapping device is aligned with the connecting end of the boring machine spindle and slowly advanced to ensure a tight fit between the tail shank 1 and the connecting end of the spindle. During the advancement process, due to the thrust of the clamping spring 24, the clamping block 21 gradually contacts and abuts against the connecting end of the boring machine spindle, the clamping rod 22 moves within the shank hole 12, and the clamping ring 23 slides within the annular slide cavity 11, further enhancing the stability of the connection between the tail shank 1 and the spindle and preventing the device from loosening during the tapping process. Preferably, the tail shank 1 is fixed to the spindle a second time by a fixing mechanism on the boring machine spindle, such as bolts or clamps, to ensure the reliability of the device under high-speed rotation and stress conditions.

[0047] The specific implementation method of this application is as follows: First, fix the workpiece to be processed on the worktable of the boring machine, and adjust the position of the workpiece so that the part to be tapped is aligned with the axis of the tap 5; Immediately, the boring machine is started, and the boring machine spindle drives the tail shank 1, sliding sleeve 3, clamping kit 4, and tap 5 to rotate together. During the rotation, the elastic force of the sleeve spring 44 pushes the clamping outer sleeve 42, which drives the clamping inner sleeve 41 and tap 5 to feed axially toward the workpiece through the clamping connecting frame 43, thus starting the tapping operation; Once tap 5 has penetrated the workpiece to a certain depth, it continues to rotate and feed, thus machining threads on the workpiece. During this process, the pad 6 remains in contact with the clamping inner sleeve 41, absorbing the vibration and impact generated during tapping and protecting tap 5 and other components of the device. Finally, after tapping is completed, the boring machine spindle is stopped and rotated in the opposite direction to disengage the tap 5 from the workpiece. During disengagement, the sleeve spring 44 gradually returns to its original state, driving the clamping kit 4 and the tap 5 back to their initial positions.

[0048] Compared with the prior art, the technical solution of this application has the following beneficial technical effects: By installing a clamping component at one end of the tail shank, the tail shank can tightly abut against the connecting end of the boring machine spindle when connected to it. This design enables tapping of long shafts on their end faces, solving the problem of drilling long shafts that cannot be machined on the end faces by drilling machines. The boring machine tapping device has a simple structure and operation, low processing cost, and high working efficiency. At the same time, compared to traditional methods relying solely on threads or simple connections, it significantly increases the connection strength and stability between the tail shank and the boring machine spindle, effectively avoiding problems such as loosening or detachment of the tail shank due to vibration or high torque during tapping, ensuring the continuity and safety of the tapping operation. It also solves the problem of excessively high operating costs associated with using dedicated machine tools for machining large shaft parts in existing technologies.

[0049] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tapping device for a boring machine, characterized in that, The device includes a tailstock (1) and a clamping member (2) connected to one end of the tailstock (1). The clamping member (2) is used to press against the connecting end of the boring machine spindle when the tailstock (1) is connected to the boring machine spindle to further fix the tailstock (1). The other end of the tailstock (1) is connected to a sliding sleeve (3). A clamping kit (4) is slidably connected to the sliding sleeve (3). The clamping kit (4) includes a clamping inner sleeve (41) slidably connected inside the sliding sleeve (3) and a clamping outer sleeve (42) slidably connected outside the sliding sleeve (3). A tap (5) is connected to the clamping inner sleeve (41).

2. The boring machine tapping device according to claim 1, characterized in that, The tailstock (1) is provided with an annular sliding cavity (11), and a plurality of handle holes (12) are opened at one end of the tailstock (1). The clamping member (2) includes a clamping block (21) and a clamping rod (22) connected to the clamping block (21). The clamping rod (22) is provided correspondingly to the handle hole (12) and the clamping rod (22) passes through the handle hole (12).

3. The boring machine tapping device according to claim 2, characterized in that, One end of the clamping rod (22) is also connected to a clamping ring (23), which is slidably connected in the annular sliding cavity (11).

4. The boring machine tapping device according to claim 3, characterized in that, The clamping component (2) also includes a clamping spring (24), one end of which is connected to the tailstock (1), and the other end of which is connected to the clamping block (21). The clamping block (21) is used to securely abut against the boring machine spindle under the action of the clamping spring (24).

5. The boring machine tapping device according to claim 1, characterized in that, The sliding sleeve (3) is provided with a plurality of first strip-shaped through holes (31). A clamping connecting frame (43) is connected between the clamping inner sleeve (41) and the clamping outer sleeve (42). The clamping connecting frame (43) passes through the first strip-shaped through holes (31). The clamping connecting frame (43) is used to connect the outer clamping outer sleeve (42) to the inner clamping inner sleeve (41) and to limit the clamping outer sleeve (42) and the clamping inner sleeve (41) so that the clamping outer sleeve (42) and the clamping inner sleeve (41) can only slide along the axial direction.

6. The boring machine tapping device according to claim 5, characterized in that, The clamping kit (4) also includes a sleeve spring (44) sleeved on the sliding sleeve (3). One end of the sleeve spring (44) is connected to the clamping outer sleeve (42), and the other end of the sleeve spring (44) is connected to the tail shank (1). The sleeve spring (44) is used to push the tap (5) under the action of the sleeve spring (44) to realize the tapping operation.

7. The boring machine tapping device according to claim 1, characterized in that, The sliding sleeve (3) is connected to a pad (6), which abuts against the clamping inner sleeve (41). The pad (6) is used to make flexible contact with the clamping inner sleeve (41).

8. The boring machine tapping device according to claim 1, characterized in that, The clamping outer sleeve (42) is threaded with a first clamping screw (45), which passes through the sliding sleeve (3) and abuts against the clamping inner sleeve (41).

9. A boring machine tapping device according to claim 8, characterized in that, The sliding sleeve (3) has a second strip-shaped through hole (32), and the first clamping screw (45) passes through the second strip-shaped through hole (32).

10. A boring machine tapping device according to claim 1, characterized in that, One end of the clamping inner sleeve (41) is connected to a second clamping screw (46), which abuts against the tap (5).

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