Expansion mandrel pressing device

Abstract

The utility model discloses an expansion mandrel pressing device, which relates to the technical field of coil manufacture, and comprises a three-shaft cylinder, a fixed adapter plate, a first driving component, a spacing pressing sleeve and a connecting rod component, and the three-shaft cylinder is connected to a base in a sliding manner; the fixed adapter plate is installed on the three-axis air cylinder. The first driving assembly is mounted on the fixed adapter plate; the interval pressing sleeve is vertically connected to the side, away from the three-axis air cylinder, of the fixed adapter plate, and a center output shaft of the three-axis air cylinder is suitable for penetrating through the fixed adapter plate and stretching into the interval pressing sleeve. The connecting rod assembly comprises a movable center sliding in the spacing pressing sleeve, and the movable center and the three-axis air cylinder are located on the two sides of the fixed adapter plate correspondingly. The connecting rod assembly is suitable for pushing the movable center to slide in the interval pressing sleeve, and then the movable center extends out of the interval pressing sleeve to abut against the center of the end of the mandrel pull rod. According to the pressing device, the production efficiency and the product quality are improved, and personal errors are reduced.

Description

Technical Field

[0001] This utility model relates to the field of coil manufacturing equipment technology, specifically to an expansion mandrel clamping device. Background Technology

[0002] When machining the outer diameter of shaft and tube products, auxiliary positioning devices are usually required to ensure the coaxiality of the inner and outer diameters of the product. For example, expansion mandrels, due to their large mass and high torque transmission, are prone to deformation of the mandrel's clamping part, which can lead to the failure of the auxiliary positioning device.

[0003] Chinese utility model patent CN203449055U discloses an expansion-type axial positioner, comprising a threaded shaft, a positioning rod inserted into one end of the threaded shaft, the positioning rod being fixed to the threaded shaft by a first nut, a tapered shaft sleeved around the outer circumference of the threaded shaft, an expansion sleeve sleeved around the outer circumference of the tapered shaft, an adjusting second nut for adjusting and fixing the expansion sleeve around the outer circumference of the tapered shaft, and a third nut for adjusting and fixing the tapered shaft and the threaded shaft around the outer circumference of the threaded shaft. This utility model uses a threaded connection between the positioning rod and the threaded shaft. The length of the positioning rod is determined according to the processing dimensions, and the expansion sleeve is used for expansion and fixing. This allows for quick, convenient, and accurate positioning and clamping of a CNC lathe spring collet, achieving axial positioning of the workpiece and ensuring the axial positioning accuracy of the workpiece during processing. Furthermore, only the workpiece clamping fixture needs to be considered, eliminating the need to consider positioning issues. This increases the versatility of the fixture and reduces the variety, quantity, and fabrication of auxiliary fixtures.

[0004] While the above-mentioned technical solution achieves the positioning of the parts, the large size of the parts limits its application range. At the same time, the device has few support points, resulting in concentrated stress. During the machining process, the parts are prone to slippage, affecting the machining quality. When machining long sleeve-type parts, the workpiece is only held in place by the tailstock center, resulting in a small clamping contact area between the workpiece and the center, which easily causes shaking and cannot guarantee the stability of the machining, thus affecting the machining accuracy of the product. Utility Model Content

[0005] In view of this, in order to overcome the defects of the above-mentioned technology, this utility model provides an expansion mandrel clamping device.

[0006] The technical solution of this utility model is as follows:

[0007] The primary objective of this invention is to provide an expansion mandrel clamping device, comprising:

[0008] A three-axis cylinder is slidably connected to the base;

[0009] A fixed adapter plate is installed on the three-axis cylinder;

[0010] The first drive assembly is mounted on the fixed adapter plate;

[0011] A spacing clamping sleeve is vertically connected to the side of the fixed adapter plate opposite to the three-axis cylinder, and the center output shaft of the three-axis cylinder is adapted to pass through the fixed adapter plate and extend into the interior of the spacing clamping sleeve;

[0012] The connecting rod assembly includes a movable tip that slides within the spacing clamping sleeve, the movable tip and the triaxial cylinder being located on opposite sides of the fixed adapter plate;

[0013] The linkage assembly is adapted to push the movable tip to slide within the spacing clamping sleeve, thereby causing the movable tip to extend outside the spacing clamping sleeve to press against the end center of the mandrel pull rod.

[0014] Optionally, the linkage assembly further includes a rotating seat fixedly mounted on one side of the fixed adapter plate and a lever pin hinged in the middle to the rotating seat. One end of the lever pin is adapted to be hinged to the first drive assembly, and the other end is adapted to be hinged to the moving tip.

[0015] Optionally, the triaxial cylinder includes a cylinder transition plate, a triaxial cylinder body connected to the upper surface of the cylinder transition plate, and two cylinder adjusting blocks installed on both sides of the triaxial cylinder body. The cylinder adjusting blocks are adapted to adjust the sliding of the triaxial cylinder body within the moving groove of the cylinder transition plate.

[0016] Optionally, the fixed adapter plate includes a first straight plate and a second straight plate that are perpendicularly connected to each other. The first straight plate is located directly above the body of the three-axis cylinder, and the second straight plate is vertically arranged between the center output shaft of the three-axis cylinder body and the spacing clamping sleeve. The second straight plate has a first central hole coaxial with the spacing clamping sleeve at the output shaft of the three-axis cylinder.

[0017] Optionally, the first drive assembly includes a first drive cylinder fixedly connected to the upper surface of the first straight plate by a mounting bracket and a Y-type connector mounted on the output shaft of the first drive cylinder, wherein the slot portion of the Y-type connector is located at one end away from the first drive cylinder.

[0018] Optionally, the spacing clamping sleeve includes a first sleeve, a mounting plate, and a second sleeve coaxially connected in sequence. The first sleeve is adapted to be inserted into the first central hole, the mounting plate is adapted to be threaded onto the second straight plate, and the second sleeve is adapted to accommodate the movable tip.

[0019] Optionally, the inner diameters of the first sleeve, the mounting plate, and the second sleeve are the same, the outer diameter of the mounting plate is larger than the outer diameter of the second sleeve, the first sleeve is adapted to accommodate the center output shaft of the three-axis cylinder body, the surface of the second sleeve is provided with a first through groove that runs vertically through it, the end of the lever pin away from the Y-type connector is adapted to be inserted into the first through groove and hinged to the movable tip located in the second sleeve.

[0020] Optionally, the movable tip is provided with a second through groove corresponding to the position of the first through groove, and the end of the lever pin is rotatably installed in the second through groove.

[0021] Optionally, the rotating seat is horizontally connected to the side of the second straight plate away from the three-axis cylinder, and the rotating seat is located directly above the mounting plate and the second sleeve.

[0022] Optionally, the rotating seat includes a rotating seat body and a rotating shaft mounted on the rotating seat body, and the rotating shaft is adapted to pass through the lever pin to provide rotational support for the linkage assembly.

[0023] Compared with the prior art, this utility model has at least the following beneficial effects:

[0024] 1. The expansion mandrel clamping device of this utility model consists of a three-axis cylinder, a fixed adapter plate, a first drive assembly, a connecting rod assembly, and a spacing clamping sleeve. The three-axis cylinder is slidably connected to the base to achieve precise positioning and stable operation. The three-axis cylinder has a compact structure, occupies little space, and can be flexibly arranged according to needs, improving the space utilization of the clamping device. The fixed adapter plate is installed on the three-axis cylinder. Under the drive of the three-axis cylinder, the fixed adapter plate ensures the stability and accuracy of the other connecting parts, reducing errors and vibrations during movement. The first drive assembly is installed on the fixed adapter plate. Under the drive of the fixed adapter plate, the first drive assembly can also move relative to the three-axis cylinder. The linkage assembly consists of a lever pin, a rotating seat, and a moving tip. One end of the lever pin is hinged to the first drive assembly, and the other end is hinged to the end of the moving tip away from the first drive assembly. The rotating seat is fixedly mounted on one side of the fixed adapter plate and located between the first drive assembly and the moving tip. The moving tip and the three-axis cylinder are located on opposite sides of the fixed adapter plate, respectively. This allows the rotating seat to provide a fulcrum for the lever pin, enabling it to rotate around the rotating seat. The spacing clamping sleeve provides a stable guide and support structure for the moving tip, ensuring its precise movement. The spacing clamping sleeve is vertically connected to the side of the fixed adapter plate away from the three-axis cylinder. The central output shaft of the three-axis cylinder is adapted to pass through the fixed adapter plate and extend into the interior of the spacing clamping sleeve to push the moving tip to slide within the spacing clamping sleeve, thereby causing the moving tip to extend out of the spacing clamping sleeve and press against the center of the end of the spindle pull rod.

[0025] 2. The multi-degree-of-freedom motion and high-precision control capability of the three-axis cylinder ensures that the fixed adapter plate and its first drive component can achieve accurate positioning and stable operation; the center output shaft of the three-axis cylinder passes through the fixed adapter plate and extends into the interior of the spacing clamping sleeve to push the moving tip to slide within the spacing clamping sleeve, further improving the positioning accuracy.

[0026] 3. The spacing clamping sleeve provides a stable guide and support structure for the moving center, ensuring the linear motion accuracy of the moving center, reducing errors and vibrations during the movement, thereby achieving high-precision pressing action.

[0027] 4. The fixed adapter plate is mounted on the three-axis cylinder, ensuring the stability and accuracy of the first drive component, reducing errors and vibrations during movement, and improving the reliability of the entire device. The rotating seat is fixedly mounted on one side of the fixed adapter plate, providing a fulcrum for the lever pin, allowing it to rotate around the rotating seat. This design ensures the transmission stability and reliability of the lever pin, reducing wear and malfunctions during transmission. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the expansion mandrel clamping device in the embodiment of this utility model;

[0029] Figure 2 This is an exploded structural diagram of the triaxial cylinder, fixed adapter plate, first drive assembly, and connecting rod assembly in an embodiment of the present utility model.

[0030] Figure 3 This is a schematic diagram of the assembly structure of the first drive assembly and the connecting rod assembly in an embodiment of the present utility model;

[0031] Figure 4 This is a cross-sectional view of the first drive assembly and the connecting rod assembly in an embodiment of the present utility model.

[0032] Figure 5 This is a schematic diagram of the assembly structure of the expansion mandrel clamping device and the mandrel tie rod in an embodiment of this utility model.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1-Three-axis cylinder;

[0035] 11-Three-axis cylinder body; 12-Cylinder transition plate; 13-Cylinder adjusting block;

[0036] 2-Fixed adapter plate;

[0037] 21-First straight plate; 22-Second straight plate; 221-First center hole;

[0038] 3-First drive component;

[0039] 31-First drive cylinder; 311-Mounting bracket; 32-Y-type connector;

[0040] 4-Linkage assembly;

[0041] 41-Lever pin; 42-Rotating seat; 421-Rotating seat body; 422-Rotating shaft; 43-Moving tip; 431-Second through slot.

[0042] 5- Spacing compression sleeve; 51- First sleeve; 52- Mounting plate; 53- Second sleeve; 531- First through groove;

[0043] 6-Mandrel tie rod. Detailed Implementation

[0044] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0045] In the description of this utility model, it should be noted that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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; they can refer to a direct connection or an indirect connection through an intermediate medium; they can also refer to the internal connection of two components; and they can refer to a wireless connection or a wired connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0047] Figure 1-5 The image shows an expansion mandrel clamping device provided in an embodiment of this utility model. The clamping device includes a three-axis cylinder 1, a fixed adapter plate 2, a first drive assembly 3, a connecting rod assembly 4, and a spacing clamping sleeve 5, wherein:

[0048] The three-axis cylinder 1 is slidably connected to the base to achieve precise positioning and stable operation. The three-axis cylinder 1 has a compact structure, occupies little space, and can be flexibly arranged according to needs to improve the space utilization of the clamping device. The fixed adapter plate 2 is installed on the three-axis cylinder 1. Under the drive of the three-axis cylinder 1, the fixed adapter plate 2 ensures the stability and accuracy of the other connecting parts and reduces errors and vibrations during the movement. The first drive assembly 3 is installed on the fixed adapter plate 2. Under the drive of the fixed adapter plate 2, the first drive assembly 3 can also move relative to the three-axis cylinder 1.

[0049] The linkage assembly 4 includes a lever pin 41, a rotating seat 42, and a moving tip 43. One end of the lever pin 41 is hinged to the first drive assembly 3, and the other end is hinged to the end of the moving tip 43 away from the first drive assembly 3. The rotating seat 42 is fixedly installed on one side of the fixed adapter plate 2 and is located between the first drive assembly 3 and the moving tip 43. The moving tip 43 and the three-axis cylinder 1 are located on both sides of the fixed adapter plate 2, so that the rotating seat 42 can provide a fulcrum for the lever pin 41, enabling it to rotate around the rotating seat 42.

[0050] The spacing clamping sleeve 5 provides a stable guide and support structure for the moving tip 43, ensuring the precise movement of the moving tip 43. In this embodiment, the spacing clamping sleeve 5 is vertically connected to the side of the fixed adapter plate 2 away from the three-axis cylinder 1. The central output shaft of the three-axis cylinder 1 is adapted to pass through the fixed adapter plate 2 and extend into the interior of the spacing clamping sleeve 5 to push the moving tip 43 to slide within the spacing clamping sleeve 5, thereby causing the moving tip 43 to extend out of the spacing clamping sleeve 5 and to press against the end center of the spindle pull rod 6.

[0051] Specifically, in this embodiment of the invention, the multi-degree-of-freedom motion and high-precision control capability of the three-axis cylinder 1 ensures that the fixed adapter plate 2 and its first drive assembly 3 can achieve precise positioning and stable operation. The central output shaft of the three-axis cylinder 1 passes through the fixed adapter plate 2 and extends into the interior of the spacing clamping sleeve 5, which is used to push the moving tip 43 to slide within the spacing clamping sleeve 5, further improving the positioning accuracy. The spacing clamping sleeve 5 provides a stable guide and support structure for the moving tip 43, ensuring the linear motion accuracy of the moving tip 43, reducing errors and vibrations during the movement, thereby achieving high-precision pressing action. The fixed adapter plate 2 is mounted on the three-axis cylinder 1, ensuring the stability and accuracy of the first drive assembly 3, reducing errors and vibrations during the movement, and improving the reliability of the entire device. The rotating seat 42 is fixedly mounted on one side of the fixed adapter plate 2, providing a fulcrum for the lever pin 41, allowing it to rotate around the rotating seat 42. This design ensures the transmission stability and reliability of the lever pin 41, reducing wear and malfunctions during the transmission process.

[0052] The automated control of the three-axis cylinder 1 and the first drive assembly 3 reduces manual intervention, improves production efficiency and product quality, ensures the accuracy and repeatability of each action, and reduces human error. The design of the linkage assembly 4 allows the entire device to flexibly adjust its direction and position to adapt to various task requirements, improving the equipment's versatility and adaptability.

[0053] Thus, the clamping device achieves high-precision and high-stability multi-degree-of-freedom motion through the coordinated work of the three-axis cylinder 1, fixed adapter plate 2, first drive assembly 3, connecting rod assembly 4 and spacing clamping sleeve 5, which is suitable for various automation application scenarios and improves production efficiency and product quality.

[0054] For further details, please refer to Figure 1 , 2 As shown, the triaxial cylinder 1 includes a triaxial cylinder body 11, a cylinder transition plate 12, and two cylinder adjusting blocks 13. The triaxial cylinder body 11 is connected to the upper surface of the cylinder transition plate 12, and the two cylinder adjusting blocks 13 are installed on both sides of the triaxial cylinder body 11. The moving groove on the cylinder transition plate 12 provides a sliding path for the triaxial cylinder body 11. The cylinder adjusting blocks 13 are adapted to adjust the sliding of the triaxial cylinder body 11 within the moving groove of the cylinder transition plate 12. During installation and debugging, the position of the triaxial cylinder body 11 is finely adjusted to ensure its precise alignment and positioning. The cylinder adjusting blocks 13, through cooperation with the moving groove, can achieve precise lateral and longitudinal adjustments, ensuring that the center output shaft of the triaxial cylinder body 11 can accurately pass through the fixed adapter plate 2 and extend into the interior of the spacing clamping sleeve 5.

[0055] During installation, the cylinder adjusting block 13 ensures that the center output shaft of the triaxial cylinder body 11 accurately passes through the fixed adapter plate 2 and extends into the gap clamping sleeve 5. The fine-tuning function of the cylinder adjusting block 13 ensures the precise alignment and positioning of the triaxial cylinder body 11, reducing installation errors. Supported by the cylinder transition plate 12, the triaxial cylinder body 11 achieves precise multi-degree-of-freedom motion. The stability of the cylinder adjusting block 13 ensures the smoothness and reliability of the triaxial cylinder body 11's movement, reducing errors and vibrations during operation.

[0056] For further details, please refer to Figure 1 , 2 As shown, the fixed adapter plate 2 includes a first straight plate 21 and a second straight plate 22 that are perpendicularly connected to each other. The first straight plate 21 is located directly above the three-axis cylinder body 11, providing a stable mounting platform for the first drive assembly 3. The second straight plate 22 is vertically arranged between the center output shaft of the three-axis cylinder body 11 and the spacing clamping sleeve 5. The second straight plate 22 has a first center hole 221 that is coaxial with the spacing clamping sleeve 5 at the output shaft of the three-axis cylinder 1. In this way, the center output shaft of the three-axis cylinder 1 slides in the first center hole 221, pushing the moving tip 43 to slide in the spacing clamping sleeve 5.

[0057] Thus, the first straight plate 21 and the second straight plate 22 are perpendicularly connected to each other, forming a stable T-shaped structure. This allows the fixed adapter plate 2 to adapt to different installation positions and working requirements. This design not only improves the flexibility of the device but also increases its adaptability.

[0058] For further details, please refer to Figure 1 , 2 As shown in Figure 3, the first drive assembly 3 includes a first drive cylinder 31 and a Y-type connector 32. The first drive cylinder 31 is fixedly connected to the upper surface of the first straight plate 21 by a mounting bracket 311. The Y-type connector 32 is installed on the output shaft of the first drive cylinder 31, and the slotted part of the Y-type connector 32 is located at the end opposite to the first drive cylinder 31. In this way, the lever pin 41 can be flexibly hinged, reducing wear and failures in the transmission process, improving the stability and reliability of the transmission, and ensuring the long-term operational stability of the entire device.

[0059] When the output shaft of the first drive cylinder 31 pushes the Y-type connector 32 to move, the slotted part of the Y-type connector 32 is hinged to one end of the lever pin 41 to achieve precise transmission. Driven by the Y-type connector 32, the lever pin 41 rotates around the rotating seat 42, pushing the moving tip 43 to slide within the spaced clamping sleeve 5.

[0060] For further details, please refer to Figure 1 , 2As shown in Figure 4, the spacing clamping sleeve 5 includes a first sleeve 51, a mounting plate 52 and a second sleeve 53 connected coaxially in sequence. The first sleeve 51 is adapted to be inserted into the first central hole 221, the mounting plate 52 is adapted to be threaded onto the second straight plate 22, and the second sleeve 53 is adapted to accommodate the movable tip 43.

[0061] Specifically, the first sleeve 51 is adapted to be inserted into the first central hole 221, ensuring precise alignment between the spacing clamping sleeve 5 and the central output shaft of the triaxial cylinder 1, reducing installation errors, and ensuring the straightness and stability of the moving tip 43 during movement. The mounting plate 52 is adapted to be threaded onto the second straight plate 22, ensuring the stability and reliability of the spacing clamping sleeve 5 on the fixed adapter plate 2, making installation and adjustment more convenient, and reducing installation time and cost. The second sleeve 53 is adapted to accommodate the moving tip 43, providing a stable guiding and support structure, ensuring the precise movement of the moving tip 43, reducing errors and vibrations during movement, and improving the accuracy and stability of the entire device.

[0062] For further details, please refer to Figure 1 , 2 As shown in Figure 4, the inner diameters of the first sleeve 51, the mounting plate 52 and the second sleeve 53 are the same. The outer diameter of the mounting plate 52 is larger than the outer diameter of the second sleeve 53. The first sleeve 51 is suitable for accommodating the center output shaft of the three-axis cylinder body 11. The surface of the second sleeve 53 is provided with a first through groove 531 that runs vertically through the cylinder. The end of the lever pin 41 away from the Y-type connector 32 is suitable for being inserted into the first through groove 531 and is hinged to the movable tip 43 located in the second sleeve 53.

[0063] In this embodiment, the inner diameters of the first sleeve 51, mounting plate 52, and second sleeve 53 are the same, ensuring the coaxiality and consistency of the entire spacing clamping sleeve 5, reducing installation errors, and ensuring the straightness and stability of the moving tip 43 during movement. The first sleeve 51 is adapted to accommodate the center output shaft of the three-axis cylinder body 11, ensuring that the center output shaft of the three-axis cylinder 1 can accurately pass through the first center hole 221 and extend into the interior of the spacing clamping sleeve 5, achieving precise alignment and positioning. The outer diameter of the mounting plate 52 is larger than that of the second sleeve 53, providing a larger contact area and a more stable fixing point, ensuring the stability and reliability of the spacing clamping sleeve 5 on the fixed adapter plate 2, and reducing failures caused by vibration and impact. The surface of the second sleeve 53 has a first through groove 531 that runs vertically through it. The end of the lever pin 41 away from the Y-type connector 32 is adapted to be inserted into the first through groove 531 and hinged to the moving tip 43 located in the second sleeve 53. This design ensures the flexible movement of the lever pin 41, reduces wear and malfunctions during transmission, and improves the long-term operational stability of the device.

[0064] For further details, please refer to Figure 3 ,4 As shown, the movable tip 43 has a second through groove 431 corresponding to the position of the first through groove 531, and the end of the lever pin 41 is rotatably installed in the second through groove 431. In this way, the end of the lever pin 41 can be accurately inserted into and rotatably installed in the second through groove 431, thereby reducing installation errors and ensuring the precise alignment and connection between the lever pin 41 and the movable tip 43.

[0065] Therefore, the rotating installation design of the second through slot 431 and the end of the lever pin 41 on the moving tip 43 not only improves the accuracy and stability of the device, but also increases the flexibility and adaptability of the device, making installation and maintenance simpler, suitable for a variety of automation application scenarios, and improving production efficiency and product quality.

[0066] For further details, please refer to Figure 3 , 4 As shown, the rotating seat 42 is horizontally connected to the side of the second straight plate 22 away from the three-axis cylinder 1, and the rotating seat 42 is located directly above the mounting plate 52 and the second sleeve 53.

[0067] Optionally, the rotating seat 42 includes a rotating seat body 421 and a rotating shaft 422. The rotating shaft 422 is mounted on the rotating seat body 421 and is adapted to pass through the lever pin 41 to provide rotational support for the linkage assembly 4.

[0068] The specific usage process of this expansion mandrel clamping device:

[0069] The relative displacement of the three-axis cylinder body 11 relative to the spindle tie rod 6 is adjusted by the cylinder adjusting block 13 and the cylinder transition plate 12.

[0070] The three-axis cylinder body 11 moves, driving the gap clamping sleeve 5 to move closer to the spindle pull rod 6;

[0071] The first drive assembly 3 operates, driving the connecting rod assembly 4 to rotate, which in turn pushes the movable tip 43 to slide within the spacing clamping sleeve 5, causing the movable tip 43 to extend out of the spacing clamping sleeve 5 and press against the end center hole of the spindle pull rod 6.

[0072] The movement stroke of the three-axis cylinder body 11 and the first drive cylinder 31 is controlled to adjust the top pressure tightness of the mandrel tie rod in the expansion mandrel.

[0073] The clamping device adjusts the relative displacement of the triaxial cylinder body 11 relative to the spindle tie rod 6 through the cylinder adjusting block 13 and the cylinder transition plate 12, ensuring that the center output shaft of the triaxial cylinder body 11 can be accurately aligned with the end center hole of the spindle tie rod 6. When the triaxial cylinder body 11 moves, it drives the spacing clamping sleeve 5 to move closer to the spindle tie rod 6, ensuring precise alignment between the spacing clamping sleeve 5 and the spindle tie rod 6. The first drive assembly 3 operates, driving the connecting rod assembly 4 to rotate, thereby pushing the moving tip 43 to slide within the spacing clamping sleeve 5. The moving tip 43 extends out of the spacing clamping sleeve 5 and presses against the end center hole of the spindle tie rod 6, achieving precise pressing. The movement stroke of the triaxial cylinder body 11 and the first drive cylinder 31 is controlled to adjust the pressing tightness of the spindle tie rod in the expansion spindle. This design ensures precise control of the pressing force and adapts to different working requirements.

[0074] This clamping device not only improves the accuracy and stability of the device, but also increases its flexibility and adaptability, making installation and maintenance easier. It is suitable for a variety of automated application scenarios, improving production efficiency and product quality.

[0075] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this invention.

Claims

1. An expansion mandrel clamping device, characterized in that, include: A three-axis cylinder is slidably connected to the base; A fixed adapter plate is installed on the three-axis cylinder; The first drive assembly is mounted on the fixed adapter plate; A spacing clamping sleeve is vertically connected to the side of the fixed adapter plate opposite to the three-axis cylinder, and the center output shaft of the three-axis cylinder is adapted to pass through the fixed adapter plate and extend into the interior of the spacing clamping sleeve; The connecting rod assembly includes a movable tip that slides within the spacing clamping sleeve, the movable tip and the triaxial cylinder being located on opposite sides of the fixed adapter plate; The linkage assembly is adapted to push the movable tip to slide within the spacing clamping sleeve, thereby causing the movable tip to extend outside the spacing clamping sleeve to press against the end center of the mandrel pull rod.

2. The expansion mandrel clamping device according to claim 1, characterized in that, The linkage assembly also includes a rotating seat fixedly mounted on one side of the fixed adapter plate and a lever pin hinged in the middle to the rotating seat. One end of the lever pin is adapted to be hinged to the first drive assembly, and the other end is adapted to be hinged to the moving tip.

3. The expansion mandrel clamping device according to claim 1, characterized in that, The triaxial cylinder includes a cylinder transition plate, a triaxial cylinder body connected to the upper surface of the cylinder transition plate, and two cylinder adjustment blocks installed on both sides of the triaxial cylinder body. The cylinder adjustment blocks are adapted to adjust the sliding of the triaxial cylinder body within the moving groove of the cylinder transition plate.

4. The expansion mandrel clamping device according to claim 2, characterized in that, The fixed adapter plate includes a first straight plate and a second straight plate that are perpendicularly connected to each other. The first straight plate is located directly above the body of the three-axis cylinder. The second straight plate is vertically arranged between the center output shaft of the three-axis cylinder body and the spacing compression sleeve. The second straight plate has a first center hole coaxial with the spacing compression sleeve at the output shaft of the three-axis cylinder.

5. The expansion mandrel clamping device according to claim 4, characterized in that, The first drive assembly includes a first drive cylinder fixedly connected to the upper surface of the first straight plate by a mounting bracket and a Y-type connector mounted on the output shaft of the first drive cylinder, wherein the slot portion of the Y-type connector is located at one end away from the first drive cylinder.

6. The expansion mandrel clamping device according to claim 5, characterized in that, The spacing clamping sleeve includes a first sleeve, a mounting plate, and a second sleeve connected coaxially in sequence. The first sleeve is adapted to be inserted into the first central hole, the mounting plate is adapted to be threaded onto the second straight plate, and the second sleeve is adapted to accommodate the movable tip.

7. The expansion mandrel clamping device according to claim 6, characterized in that, The first sleeve, the mounting plate, and the second sleeve have the same inner diameter. The outer diameter of the mounting plate is larger than the outer diameter of the second sleeve. The first sleeve is adapted to accommodate the center output shaft of the three-axis cylinder body. The surface of the second sleeve is provided with a first through groove that runs vertically through the cylinder. The end of the lever pin away from the Y-type connector is adapted to be inserted into the first through groove and hinged to the movable tip located in the second sleeve.

8. The expansion mandrel clamping device according to claim 7, characterized in that, The movable tip has a second through groove corresponding to the position of the first through groove, and the end of the lever pin is rotatably installed in the second through groove.

9. The expansion mandrel clamping device according to claim 6, characterized in that, The rotating seat is horizontally connected to the side of the second straight plate away from the three-axis cylinder, and the rotating seat is located directly above the mounting plate and the second sleeve.

10. The expansion mandrel clamping device according to claim 2, characterized in that, The rotating seat includes a rotating seat body and a rotating shaft mounted on the rotating seat body, and the rotating shaft is adapted to pass through the lever pin to provide rotational support for the linkage assembly.

Images