Threaded cutter with telescopic cutter bar
By designing a threading tool with a telescopic tool holder, the problem of the inability to adjust the length of existing threading tools has been solved, achieving flexible length adjustment and efficient machining results, reducing production costs and improving machining accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI FONHAE PRECISION TOOLS CO LTD
- Filing Date
- 2025-05-13
- Publication Date
- 2026-04-28
AI Technical Summary
Most existing thread cutting tools are fixed and cannot be adjusted in length, which means that various sizes of boring tools need to be prepared when machining holes of different depths, increasing production costs.
Design a threading tool with a telescopic tool holder. Through the sliding connection between the sliding sleeve and the tool holder, combined with the locking mechanism driven by the internal spring, the length of the threading tool can be quickly adjusted. The linearity and fixation of the sliding sleeve movement are ensured by components such as guide blocks and springs.
It enables flexible adjustment of the thread cutting tool length, reduces production costs, improves processing efficiency, and ensures the accuracy and stability of thread processing.
Smart Images
Figure CN224168920U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of thread cutting tool technology, and in particular relates to a thread cutting tool with a telescopic tool holder. Background Technology
[0002] Threading tools are specialized cutting tools used to machine threads. Their function is to cut precise internal or external threads on the surface of a workpiece to meet functional requirements such as mechanical connections, transmission, or sealing. Through processes such as turning, milling, tapping, or threading, threading tools can create thread profiles (such as metric, imperial, and trapezoidal threads) that conform to international standards or specific requirements on materials such as metals and plastics. This ensures the dimensional accuracy, surface quality, and interchangeability of the threads, and they are widely used in the manufacturing and repair of fasteners, pipes, screws, bearings, and other components.
[0003] Existing thread cutting tools still have some problems during use. For example, most existing thread cutting tools are fixed and their length cannot be adjusted. This means that when machining holes of the same radius, different sizes of boring tools are needed due to different depths, which indirectly increases production costs.
[0004] To address these issues, we provide a threading tool with a telescopic shank. Utility Model Content
[0005] The purpose of this invention is to provide a thread cutter with a telescopic tool holder that can adjust the length of the thread cutter, thus solving the problem that most existing thread cutters are fixed and cannot adjust their length.
[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.
[0007] This utility model relates to a telescopic threading cutter, comprising a handle, a sliding sleeve slidably connected to the surface of the handle, a threading cutter head fixedly connected to the top of the sliding sleeve, a first placement groove inside the handle, a vertical plate fixedly connected inside the first placement groove, limit rods fixedly connected to both sides of the vertical plate, a sliding plate slidably connected to the surface of the limit rods, a fixed plate fixedly connected to one side of the sliding plate, an inclined block fixedly connected to the bottom of the fixed plate, a tension spring sleeved on one side of the surface of the limit rods, guide plates fixedly connected to both sides of the inner wall of the first placement groove, a circular plate slidably connected to the surface of the guide plate, a pulley rod fixedly connected to the top of the circular plate, a connecting plate fixedly connected to the bottom of the circular plate, a push plate fixedly connected to one bottom of one side of the connecting plate, a push button fixedly connected to one side of the push plate, a second placement groove inside the circular plate, a spring disposed inside the second placement groove, a movable plate fixedly connected to one end of the spring, and a fixed block fixedly connected to one side of the movable plate.
[0008] The present invention is further configured such that a limiting groove is formed inside the guide plate, and the fixing block is slidably connected inside the limiting groove.
[0009] The present invention is further configured such that a fixing groove is provided on the inner wall of the sliding sleeve, and the fixing plate is slidably connected to the inside of the fixing groove.
[0010] The present invention is further configured such that a through groove is provided on one side of the knife handle, and the push button is slidably connected inside the through groove.
[0011] The present invention is further configured such that guide grooves are provided on both sides of the inner wall of the through groove, and a limiting plate is slidably connected inside the guide groove, with one side of the limiting plate being fixedly connected to one side of the push button.
[0012] The present invention is further configured such that guide blocks are fixedly connected to both sides of the knife handle, and the sliding sleeve is slidably connected to the surface of the guide blocks.
[0013] The present invention is further configured such that sliding grooves are provided on both sides of the knife handle, and the fixing plate is slidably connected to the inside of the sliding grooves.
[0014] The present invention has the following beneficial effects.
[0015] 1. This utility model achieves rapid adjustment of the thread cutting tool length by using a sliding connection between the sliding sleeve and the tool holder, combined with an internal spring-driven locking mechanism. The user only needs to push the push button downwards to release the sliding sleeve limit through the cooperation of the wedge block and the fixed plate, allowing it to slide freely to the desired length. Then, by pushing the push button upwards, the sliding sleeve is re-limited by the wedge block and the fixed plate. This allows the tool to adapt to the thread processing requirements of different depths, eliminating the need for frequent tool changes, significantly reducing production costs, and improving processing efficiency.
[0016] 2. By setting the guide block, this utility model can ensure the straightness of the sliding sleeve during movement and avoid thread tooth error caused by sway. At the same time, by setting the spring, moving plate and fixing block, the circular plate can be fixed and limited to ensure that after the length is adjusted, the sliding sleeve is prevented from moving due to external reasons, thus ensuring the accuracy of thread processing.
[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.
[0019] Figure 1 This is a perspective view of a threading tool with a telescopic tool holder.
[0020] Figure 2 This is a front sectional view of a threading tool with a telescopic tool holder.
[0021] Figure 3 This is an exploded view of the tool holder in a threading tool with a telescopic tool holder.
[0022] Figure 4 This is an exploded view of the fixing plate in a threading tool with a telescopic tool holder.
[0023] Figure 5 This is an exploded view of the circular plate in a threading tool with a telescopic tool holder.
[0024] In the attached diagram: 1. Tool holder; 2. Sliding sleeve; 3. Threading tool head; 4. First placement slot; 5. Vertical plate; 6. Limiting rod; 7. Slide plate; 8. Fixing plate; 9. Inclined block; 10. Tension spring; 11. Guide plate; 12. Circular plate; 13. Pulley rod; 14. Connecting plate; 15. Push plate; 16. Push button; 17. Second placement slot; 18. Spring; 19. Moving plate; 20. Fixing block; 21. Limiting slot; 22. Fixing slot; 23. Guide block. Detailed Implementation
[0025] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0026] Example 1
[0027] Please see Figures 1-5This utility model relates to a threading cutter with a telescopic tool holder, comprising a tool holder 1, a sliding sleeve 2 slidably connected to the surface of the tool holder 1, the sliding sleeve 2 driving the threading cutter head 3 to move, and the threading cutter head 3 fixedly connected to the top of the sliding sleeve 2, the threading cutter head 3 being capable of machining threads. A first placement groove 4 is provided inside the tool holder 1, which facilitates the placement of a fixing component to limit the sliding sleeve 2. A vertical plate 5 is fixedly connected inside the first placement groove 4, the vertical plate 5 fixing a limiting rod 6 and a tension spring 10. Limiting rods 6 are fixedly connected to both sides of the vertical plate 5. The limiting rod 6 is fixedly connected at both ends to one side of the inner wall of the handle 1 and one side of the vertical plate 5, respectively. A sliding plate 7 is slidably connected to the surface of the limiting rod 6. A fixed plate 8 is fixedly connected to one side of the sliding plate 7. The distance between the fixed plate 8 and the vertical plate 5 is the distance that the pulley rod 13 pushes the inclined block 9 to move. This facilitates the pulley rod 13 to push the fixed plate 8 to limit the sliding sleeve 2, and the tension spring 10 to drive the fixed plate 8 to reset, thereby releasing the limitation on the sliding sleeve 2. The sliding plate 7 can drive the fixed plate 8 to move. An inclined block 9 is fixedly connected to the bottom of the fixed plate 8. The inclined block 9 can be moved by the pulley. Rod 13 releases the limiting position on the sliding sleeve 2. A tension spring 10 is fitted on one side of the limiting rod 6. The two ends of the tension spring 10 are fixedly connected to one side of the vertical plate 5 and one side of the inner wall of the handle 1, respectively. Guide plates 11 are fixedly connected to both sides of the inner wall of the first placement groove 4. The guide plates 11 can limit the circular plate 12. The circular plate 12 is slidably connected to the surface of the guide plates 11. A pulley rod 13 is fixedly connected to the top of the circular plate 12. The pulley rod 13 includes a support rod and a pulley. It can drive the fixed plate 8 to move through the inclined block 9. A connecting plate 14 is fixedly connected to the bottom of the circular plate 12. A push plate 15 is fixedly connected to one bottom side of the connecting plate 14, and a push button 16 is fixedly connected to one side of the push plate 15. The push button 16 can drive the circular plate 12 to move, thereby achieving the purpose of adjusting the length of the thread cutter head 3. A second placement groove 17 is opened inside the circular plate 12, and a spring 18 is installed inside the second placement groove 17. A moving plate 19 is fixedly connected to one end of the spring 18, and the two ends of the spring 18 are fixedly connected to one side of the inner wall of the second placement groove 17 and one side of the moving plate 19, respectively. A fixing block 20 is fixedly connected to one side of the moving plate 19.
[0028] Example 2
[0029] Please see Figures 1-5Based on embodiment 1, a limiting groove 21 is provided inside the guide plate 11, and a fixing block 20 is slidably connected inside the limiting groove 21. The limiting groove 21 can assist the fixing block 20 in limiting the circular plate 12. A fixing groove 22 is provided on the inner wall of the sliding sleeve 2, and a fixing plate 8 is slidably connected inside the fixing groove 22. The fixing groove 22 can facilitate the adjustment of the working length of the thread cutter head 3. A through groove is provided on one side of the tool handle 1, and a push button 16 is slidably connected inside the through groove. Guide grooves are provided on both sides of the inner wall of the through groove. A limiting plate is slidably connected inside the guide groove. One side of the limiting plate is fixedly connected to one side of the push button 16. The limiting plate and the guide groove can limit the push button 16. Guide blocks 23 are fixedly connected on both sides of the tool handle 1, and the sliding sleeve 2 is slidably connected to the surface of the guide block 23. The guide block 23 can limit the sliding sleeve 2 and prevent it from deviating when processing and adjusting the working length. Sliding grooves are provided on both sides of the tool handle 1, and a fixing plate 8 is slidably connected inside the sliding grooves.
[0030] The working principle of this utility model is as follows: When the length of the cutter needs to be adjusted, the user pushes the push button 16 downwards, which drives the connecting plate 14 and the circular plate 12 to move down along the guide plate 11 through the push plate 15. The circular plate 12 drives the pulley rod 13 to move down, thereby releasing the limitation on the fixed plate 8. At this time, the tension spring 10 will pull the slide plate 7 to reset through its own elasticity, and the slide plate 7 will drive the fixed plate 8 to reset, thereby releasing the limitation on the sliding sleeve 2. Then the user can directly adjust the position of the sliding sleeve 2. When the sliding sleeve 2 moves, it will also drive the thread cutter head 3 to move, thereby achieving the purpose of adjusting the length of the thread cutter head 3.
[0031] After adjustment, the user pushes the push button 16 upwards, which moves the push plate 15. The push plate 15 moves the circular plate 12 upwards through the connecting plate 14. The circular plate 12 moves the pulley rod 13 upwards, so that the top of the pulley rod 13 contacts the bottom of the inclined block 9, thereby squeezing the inclined block 9 to move. The inclined block 9 will then move the fixing plate 8, so that the fixing plate 8 moves into the fixing groove 22, thereby limiting the sliding sleeve 2. When the fixing plate 8 moves, it will also pull the tension spring 10 through the sliding plate 7 to move, thereby limiting the sliding sleeve 2 and preventing the sliding sleeve 2 from moving during processing.
[0032] Furthermore, when the circular plate 12 moves, it will drive the fixed block 20 to move. When the fixed block 20 contacts the inner wall of the limiting groove 21, the limiting groove 21 will squeeze the fixed block 20 to move. The fixed block 20 pushes the moving plate 19 to move, and the moving plate 19 will squeeze the spring 18. When the fixed block 20 is flush with the limiting groove 21, the spring 18 will push the moving plate 19 to move through its own elasticity, thereby moving the fixed block 20 into the limiting groove 21, thus limiting the circular plate 12, ensuring that the limiting of the sliding sleeve 2 will not loosen, and ensuring the stability during processing.
[0033] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. A threading tool with a telescopic shank, comprising a tool holder (1), characterized in that: The handle (1) is slidably connected to a sliding sleeve (2), and a threaded cutting head (3) is fixedly connected to the top of the sliding sleeve (2). The handle (1) has a first placement groove (4) inside, and a vertical plate (5) is fixedly connected inside the first placement groove (4). Limiting rods (6) are fixedly connected to both sides of the vertical plate (5). A sliding plate (7) is slidably connected to the surface of the limiting rod (6). A fixing plate (8) is fixedly connected to one side of the sliding plate (7). An inclined block (9) is fixedly connected to the bottom of the fixing plate (8). A tension spring (10) is sleeved on one side of the surface of the limiting rod (6). Guide plates are fixedly connected to both sides of the inner wall of the first placement groove (4). (11) A circular plate (12) is slidably connected to the surface of the guide plate (11). A pulley rod (13) is fixedly connected to the top of the circular plate (12). A connecting plate (14) is fixedly connected to the bottom of the circular plate (12). A push plate (15) is fixedly connected to the bottom of one side of the connecting plate (14). A push button (16) is fixedly connected to one side of the push plate (15). A second placement groove (17) is opened inside the circular plate (12). A spring (18) is provided inside the second placement groove (17). A moving plate (19) is fixedly connected to one end of the spring (18). A fixing block (20) is fixedly connected to one side of the moving plate (19).
2. The threading tool with a telescopic tool holder according to claim 1, characterized in that: The guide plate (11) has a limiting groove (21) inside, and the fixing block (20) is slidably connected inside the limiting groove (21).
3. The thread cutting tool with a telescopic tool holder according to claim 1, characterized in that: The inner wall of the sliding sleeve (2) is provided with a fixing groove (22), and the fixing plate (8) is slidably connected to the inside of the fixing groove (22).
4. A threading tool with a telescopic tool holder according to claim 1, characterized in that: A through groove is provided on one side of the handle (1), and the push button (16) is slidably connected inside the through groove.
5. A threading tool with a telescopic tool holder according to claim 4, characterized in that: Guide grooves are provided on both sides of the inner wall of the through groove. A limit plate is slidably connected inside the guide groove. One side of the limit plate is fixedly connected to one side of the push button (16).
6. A threading tool with a telescopic tool holder according to claim 1, characterized in that: Guide blocks (23) are fixedly connected to both sides of the handle (1), and the sliding sleeve (2) is slidably connected to the surface of the guide block (23).
7. A threading tool with a telescopic tool holder according to claim 1, characterized in that: The tool holder (1) has sliding grooves on both sides, and the fixing plate (8) is slidably connected to the inside of the sliding grooves.