A tungsten carbide boring tool

Abstract

This utility model discloses a tungsten carbide boring tool, including a tool head and a quick-release mechanism. The quick-release mechanism includes an insertion rod and a quick-release sleeve. The insertion rod is fixed to the top of the tool head and inserted into the quick-release sleeve. A groove is formed on the outer wall of the insertion rod. A sliding rod is slidably provided on the outer wall of the quick-release sleeve. Multiple sets of sliding rods are provided, each with a locking block fixed at its bottom. A push block is fixedly provided at the top of each set of sliding rods. A limiting sleeve is slidably provided on the outer wall of the quick-release sleeve. By forming a groove on the outer wall of the insertion rod and cooperating with the sliding locking block on the outer wall of the quick-release sleeve, a quick locking function is achieved. At the same time, the use of polygonal positioning holes and positioning rods ensures accurate positioning and anti-rotation of the tool head installation. This structural design completely changes the traditional boring tool fixing method that relies on complex threaded connections or wedge-shaped grooves. The operator can complete the installation of the tool head with only simple insertion and rotation actions, without the need for special tools, which greatly reduces the assembly difficulty and time required.

Description

Technical Field

[0001] This utility model relates to the field of boring tool technology, and more specifically, to a tungsten steel boring tool. Background Technology

[0002] In the modern precision machining industry, the machining of internal holes in parts is a common and critical process, especially in the manufacturing of precision parts such as automobile engine cylinder blocks, hydraulic valve bodies, and bearing seats, where the requirements for dimensional accuracy, surface quality, and coaxiality of internal holes are extremely high. As the core tool for internal hole machining, tungsten carbide boring tools are widely used in these high-precision machining scenarios due to their high hardness, good wear resistance, and strong thermal stability.

[0003] However, existing tungsten carbide boring tools have revealed serious functional defects in actual production: the tool head and tool holder are connected by traditional threaded connections or wedge-shaped grooves, making the installation and disassembly process cumbersome and time-consuming. They require the use of special wrenches or other auxiliary tools for multiple rotations or tapping operations. During the rapid installation of the tool, problems such as inaccurate positioning and improper assembly are prone to occur, leading to fluctuations in machining accuracy and premature tool failure. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the problems existing in the prior art, this utility model provides a tungsten carbide boring tool to solve the technical problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a tungsten steel boring tool, comprising a tool head and a quick-release mechanism, wherein the quick-release mechanism comprises an insert rod and a quick-release sleeve, the insert rod is fixed to the top of the tool head and inserted into the quick-release sleeve, the outer wall of the insert rod is provided with a slot, the outer wall of the quick-release sleeve is provided with a sliding rod, the sliding rod is provided with multiple sets and each of the sliding rods is fixed with a locking block at its bottom end, the top of each of the multiple sets of sliding rods is fixed with a push block, and the outer wall of the quick-release sleeve is provided with a limiting sleeve.

[0008] The present invention is further configured such that the outer wall of the quick-release sleeve is provided with a movable groove, and multiple sets of push blocks slide in the multiple sets of movable grooves respectively. This design provides a stable motion track for the push blocks, ensuring that the push blocks slide in a predetermined direction without deviation during the movement. At the same time, the movable grooves also play a limiting and protective role, preventing the push blocks from falling off and reducing the possibility of external impurities entering the system.

[0009] The present invention is further configured such that multiple sets of slide rods are all polygonal and slidably connected to the quick-release sleeve. The polygonal cross-section design effectively prevents the slide rods from rotating during movement, ensuring that the slide rods can only move axially and not rotate, thereby improving the accuracy of the locking block positioning and the stability of the system movement, while also enhancing the torsional stiffness of the entire mechanism.

[0010] The present invention is further provided in that a return spring is connected between the outer wall of the multiple sets of locking blocks and the inner wall of the quick-release sleeve. The return spring provides an automatic rebound force for the locking blocks, so that the locking blocks can quickly and reliably exit the slot after being unlocked, and can complete the automatic reset without additional operation. At the same time, the preload of the return spring can also provide good anti-loosening performance, which enhances the reliability and service life of the connection.

[0011] The present invention is further configured such that the quick-release sleeve is provided with a threaded sleeve on the outer wall threaded connection, and the threaded sleeve is connected to the limiting sleeve. This threaded drive structure converts rotational motion into precise axial movement. The position of the limiting sleeve can be controlled by a simple rotation operation, thereby achieving precise control of the locking block. At the same time, the threaded connection also provides a self-locking function to prevent accidental loosening due to vibration during use.

[0012] The present invention is further configured such that a positioning hole is provided inside the insertion rod, and a positioning rod is fixed inside the quick-release sleeve. Both the positioning hole and the positioning rod are polygonal. The polygonal positioning structure not only provides accurate coaxial positioning, but more importantly, it prevents the insertion rod from rotating inside the quick-release sleeve, ensuring that the cutter head maintains a fixed direction during use. The polygonal contact surface also increases the contact area, improving the rigidity and load-bearing capacity of the connection.

[0013] The present invention is further configured such that a slot is provided inside the insertion rod, and a compression spring is connected inside the slot. A stop plate is connected to the top of the compression spring. This design forms an automatic ejection mechanism. When the lock is released, the compression spring releases energy to push the stop plate and the positioning rod, so that the insertion rod automatically separates from the quick-release sleeve without manual removal, which greatly simplifies the disassembly process. At the same time, the buffering effect of the compression spring also reduces the impact force during the installation process and protects the connecting parts.

[0014] The present invention is further provided that a thrust bearing is provided between the threaded sleeve and the limiting sleeve. The addition of the thrust bearing significantly reduces the frictional resistance between the threaded sleeve and the limiting sleeve when the threaded sleeve rotates, making the operation easier and smoother. At the same time, the thrust bearing can also withstand axial loads, disperse stress concentration, extend the service life of the components, and improve the accuracy and sensitivity of the entire adjustment mechanism.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a tungsten carbide boring tool, which has the following beneficial effects:

[0017] 1. The quick-release mechanism of this tungsten carbide boring tool innovatively adopts a structural design that combines a insertion rod and a quick-release sleeve. By opening a slot on the outer wall of the insertion rod and cooperating with the sliding block on the outer wall of the quick-release sleeve, a quick locking function is achieved. At the same time, the use of polygonal positioning holes and positioning rods ensures precise positioning and anti-rotation of the tool head during installation. This structural design completely changes the traditional boring tool's fixation method that relies on complex threaded connections or wedge-shaped slots. Operators can complete the installation of the tool head with just simple insertion and rotation actions, without the need for special tools, which greatly reduces the assembly difficulty and time required. It is particularly suitable for applications where tool changes are frequent in mass production and flexible manufacturing systems.

[0018] 2. The multi-set sliding rod and locking block design of this quick-installation mechanism forms a uniformly distributed multi-point locking system. When the threaded sleeve rotates and drives the limiting sleeve to move, the push block synchronously drives multiple sets of locking blocks to simultaneously engage in the slot, realizing the all-round fixation of the insertion rod. This design significantly improves the stability and rigidity of the connection and effectively solves the problem of easy loosening in high-strength processing of traditional connection methods. The dual elastic element design of compression spring and return spring not only provides reliable pre-tightening force for the locking mechanism, but also realizes the automatic pop-out function during disassembly, completely avoiding the trouble of using auxiliary tools to knock or forcibly pull out when disassembling a traditional boring tool.

[0019] 3. This quick-release mechanism achieves extremely high operational convenience while ensuring high-precision positioning. The combination design of the threaded sleeve and thrust bearing makes rotational operation easier and smoother. The anti-rotation design of the polygonal slide bar ensures precise guidance of the block movement. The automatic ejection mechanism composed of the compression spring and the abutment plate in the slot can actively separate the cutter head from the quick-release sleeve during disassembly. These detailed designs together constitute a highly integrated, easy-to-operate, and reliable quick-release system, which not only greatly improves production efficiency and equipment utilization, but also extends tool life and reduces maintenance costs. It is particularly suitable for modern precision machining industries that pursue lean production and intelligent manufacturing. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a tungsten carbide boring tool according to the present invention;

[0021] Figure 2 This is a schematic diagram of the insert rod in this utility model;

[0022] Figure 3 This is a cross-sectional view of the quick-assembly mechanism in this utility model;

[0023] Figure 4 This is a cross-sectional view of the fixing sleeve in this utility model;

[0024] Figure 5This is a cross-sectional view of the fixing sleeve and the insertion rod in this utility model.

[0025] In the diagram: 1. Cutting head; 2. Insertion rod; 3. Quick-release sleeve; 4. Slot; 5. Slide rod; 6. Locking block; 7. Push block; 8. Limiting sleeve; 9. Movable groove; 10. Return spring; 11. Threaded sleeve; 12. Positioning hole; 13. Positioning rod; 14. Empty groove; 15. Compression spring; 16. Abutment plate; 17. Thrust bearing. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0028] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0029] Please see Figures 1-5 A tungsten carbide boring tool includes a tool head 1 and a quick-release mechanism. The quick-release mechanism includes an insertion rod 2 and a quick-release sleeve 3. The insertion rod 2 is fixed to the top of the tool head 1 and inserted into the quick-release sleeve 3. A slot 4 is provided on the outer wall of the insertion rod 2. A slide rod 5 is slidably provided on the outer wall of the quick-release sleeve 3. Multiple sets of slide rods 5 are provided, and a locking block 6 is fixedly provided at the bottom of each set. A push block 7 is fixedly provided at the top of each set of slide rods 5. A limiting sleeve 8 is slidably provided on the outer wall of the quick-release sleeve 3.

[0030] The quick-release sleeve 3 has a movable groove 9 on its outer wall. Multiple sets of push blocks 7 slide in the multiple sets of movable grooves 9. The movable grooves 9 provide a standard movement track for the push blocks 7, ensuring that the push blocks 7 slide along the predetermined direction without deviating during the movement. When the limit sleeve 8 pushes the push blocks 7, the push blocks 7 can only move in a straight line within the movable grooves 9, thereby ensuring the accuracy and reliability of the locking action.

[0031] Multiple sets of slide rods 5 are all polygonal and slidably connected to quick-release sleeve 3. The polygonal slide rods 5 can only move axially within the quick-release sleeve 3 and will not rotate. This anti-rotation structure ensures that the movement direction of the locking block 6 is always consistent. When the push block 7 is subjected to force, the force is accurately transmitted to the locking block 6, making it accurately engage or disengage from the slot 4, thus improving the reliability and positioning accuracy of the locking mechanism.

[0032] Each set of locking blocks 6 has a reset spring 10 connected between its outer wall and the inner wall of the quick-release sleeve 3. When the reset spring 10 is in a stretched state, it stores elastic potential energy. When the limiting sleeve 8 releases its contact with the push block 7, the reset spring 10 releases energy to pull the locking block 6 outward, so that the locking block 6 automatically disengages from the slot 4, realizing a quick unlocking function. No additional disassembly tools or complicated operations are required, which greatly simplifies the disassembly process.

[0033] The quick-release sleeve 3 has a threaded connection on its outer wall with a threaded sleeve 11. The threaded sleeve 11 is connected to the limiting sleeve 8. By rotating the threaded sleeve 11, the mechanical advantage of the thread is used to convert the rotational motion into the axial movement of the limiting sleeve 8. When the threaded sleeve 11 rotates clockwise, the limiting sleeve 8 moves downward and pushes the push block 7, which in turn drives the locking block 6 to engage with the locking groove 4, thus forming a lock. Conversely, rotating the threaded sleeve 11 counterclockwise causes the limiting sleeve 8 to move upward, releasing the pressure on the push block 7 and unlocking the device.

[0034] The insertion rod 2 has a positioning hole 12, and the quick-release sleeve 3 has a fixed positioning rod 13. Both the positioning hole 12 and the positioning rod 13 are polygonal. When the insertion rod 2 is inserted into the quick-release sleeve 3, the polygonal positioning rod 13 is precisely engaged with the positioning hole 12. This design not only provides coaxial positioning function, but more importantly, it prevents the cutting head 1 from rotating during the working process. The polygonal structure has a larger contact area and stronger anti-torsion ability than a circle, ensuring the stability of the cutting head 1 under high-speed rotation and cutting force.

[0035] The insertion rod 2 has a slot 14, and a compression spring 15 is connected inside the slot 14. The top of the compression spring 15 is connected to an abutment plate 16. During installation, when the positioning rod 13 is inserted into the positioning hole 12, it pushes the abutment plate 16 to compress the compression spring 15, and the compression spring 15 stores energy. When unlocked, the compression spring 15 releases energy to push the abutment plate 16, and the abutment plate 16 pushes the positioning rod 13, thereby automatically separating the insertion rod 2 from the quick-release sleeve 3, realizing the automatic pop-out function of the cutter head 1, without the operator having to pull it out by force, improving the safety and convenience of operation.

[0036] A thrust bearing 17 is provided between the threaded sleeve 11 and the limiting sleeve 8. The thrust bearing 17 separates the rotational movement of the threaded sleeve 11 from the axial movement of the limiting sleeve 8. When the operator rotates the threaded sleeve 11, the thrust bearing 17 bears the axial force and reduces rotational friction, so that the threaded sleeve 11 can rotate smoothly while the limiting sleeve 8 only moves axially. This design reduces the operating force, improves the operating comfort, and also extends the service life of the threaded connection.

[0037] In this embodiment, the quick-release sleeve 3 is installed on an external machine tool. When the tool head 1 needs to be installed, the insertion rod 2 is inserted into the quick-release sleeve 3, and the positioning rod 13 is used to position and insert it into the positioning hole 12. The positioning rod 13 pushes the abutment plate 16 and squeezes the compression spring 15. Then, the threaded sleeve 11 is rotated clockwise to make threaded engagement with the outer wall of the quick-release sleeve 3, and the thrust bearing 17 pushes the limiting sleeve 8 to slide along the outer wall of the quick-release sleeve 3. The limiting sleeve 8 abuts against the top of the multiple sets of push blocks 7 and makes it slide along the movable groove 9. The multiple sets of push blocks 7 are all pushed by the slide rod 5 to engage the locking block 6 in the locking groove 4 to fix the insertion rod 2. At the same time, the multiple sets of locking blocks 6 stretch the return spring 10.

[0038] More specifically, when disassembly is required, the threaded sleeve 11 is rotated counterclockwise and the limiting sleeve 8 is pulled to release the contact with the multiple sets of push blocks 7. The multiple sets of tension springs pull the locking block 6 to disengage it from the slot 4, releasing the fixation of the insertion rod 2. The compression spring 15 is used to reset and push the abutment plate 16. The abutment plate 16 pushes the positioning rod 13, causing the insertion rod 2 to separate from the quick-release sleeve 3, thus completing the disassembly of the cutter head 1.

[0039] In summary, during the use or operation of the overall equipment: the quick-release sleeve 3 is installed on an external machine tool. When the tool head 1 needs to be installed, the insertion rod 2 is inserted into the quick-release sleeve 3. The positioning rod 13 is used to position and insert the insertion rod into the positioning hole 12. The positioning rod 13 pushes the abutment plate 16 and squeezes the compression spring 15. Then, the threaded sleeve 11 is rotated clockwise to make threaded engagement with the outer wall of the quick-release sleeve 3. The thrust bearing 17 pushes the limiting sleeve 8 to slide along the outer wall of the quick-release sleeve 3. The limiting sleeve 8 abuts against the top of the multiple sets of push blocks 7 and makes it slide along the movable groove 9. The multiple sets of push blocks 7 are all pushed by the slide rod 5 to engage the locking block 6 in the locking groove 4 to fix the insertion rod 2. At the same time, the multiple sets of locking blocks 6 stretch the return spring 10.

[0040] When disassembly is required, rotate the threaded sleeve 11 counterclockwise and pull the limiting sleeve 8 to release the contact with the multiple sets of push blocks 7. The multiple sets of tension springs pull the locking block 6 to disengage it from the slot 4, releasing the fixation of the insertion rod 2. The compression spring 15 resets and pushes the abutment plate 16. The abutment plate 16 pushes the positioning rod 13, causing the insertion rod 2 to separate from the quick-release sleeve 3, thus completing the disassembly of the cutter head 1.

[0041] Of all the solutions mentioned above, those involving connections between two components can be selected based on the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other well-known connection methods. These will not be elaborated on here. For all the fixed connections mentioned above, welding is the preferred option.

[0042] In all the solutions mentioned above, those involving the operation of electrical components, unless otherwise specified, are controlled by a controller. Since the devices matched with the controllers are common devices, their control principles and circuit connections are existing, well-known, and mature technologies, and their specific circuit structures will not be described in detail here.

[0043] Of all the solutions mentioned above, those involving motors can be combined with reducers if necessary. The connection structure and working principle between the motor and the reducer are existing known technologies and will not be described in detail in this utility model.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tungsten steel boring tool comprising a tool head (1) and a quick mounting mechanism, characterized in that: The quick-release mechanism includes a plug rod (2) and a quick-release sleeve (3). The plug rod (2) is fixed to the top of the cutter head (1) and inserted into the quick-release sleeve (3). The outer wall of the plug rod (2) is provided with a slot (4). The outer wall of the quick-release sleeve (3) is provided with a sliding rod (5). The sliding rod (5) is provided with multiple sets and each of them is provided with a locking block (6) at the bottom. Each of the multiple sets of sliding rods (5) is provided with a push block (7) at the top. The outer wall of the quick-release sleeve (3) is provided with a limiting sleeve (8).

2. A tungsten steel boring tool according to claim 1, characterized in that: The quick-release sleeve (3) has a movable groove (9) on its outer wall, and multiple sets of push blocks (7) slide in the multiple sets of movable grooves (9).

3. A tungsten steel boring tool according to claim 2, characterised in that: Multiple sets of slide rods (5) are all set as polygons and are slidably connected to the quick-release sleeve (3).

4. A tungsten steel boring tool according to claim 3, characterized in that the groups of A return spring (10) is provided between the outer wall of the card block (6) and the inner wall of the quick-release sleeve (3).

5. A tungsten steel boring tool according to claim 4, characterised in that: The quick-release sleeve (3) has a threaded sleeve (11) on its outer wall, and the threaded sleeve (11) is connected to the limiting sleeve (8).

6. A tungsten carbide boring tool according to claim 5, characterized in that: The insertion rod (2) has a positioning hole (12) inside, and the quick-release sleeve (3) has a positioning rod (13) fixed inside. Both the positioning hole (12) and the positioning rod (13) are polygonal.

7. A tungsten carbide boring tool according to claim 6, characterized in that: The insert (2) has a slot (14) inside, and a compression spring (15) is connected inside the slot (14). The top of the compression spring (15) is connected to an abutment plate (16).

8. A tungsten carbide boring tool according to claim 7, characterized in that: A thrust bearing (17) is provided between the threaded sleeve (11) and the limiting sleeve (8).

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