Tungsten steel end mill capable of enhancing tool nose protection
By designing a retractable tungsten carbide end mill structure and a sliding component protective sleeve, the problems of flexibility and tip protection of traditional tungsten carbide end mills when machining complex workpieces are solved, thereby improving machining efficiency and extending service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU XINBOYUAN MECHANICAL & ELECTRICAL TECHNOLOGY CO LTD
- Filing Date
- 2025-05-05
- Publication Date
- 2026-05-12
AI Technical Summary
Traditional tungsten carbide end mills cannot flexibly adjust the cutting position when machining workpieces of different depths or complex shapes, resulting in limited machining efficiency and quality. At the same time, they also have insufficient tip wear and damage resistance.
A tungsten carbide end mill was designed, which includes a housing and a telescopic sleeve. The telescopic adjustment of the end mill body is achieved through the cooperation of components such as a fixed sleeve, a rotating shaft, and a pressing block. A sliding component is also provided to protect the tip of the end mill and prevent wear and damage.
It enables flexible adjustment of the length of tungsten carbide end mills to adapt to machining needs of different depths and diameters, reduces tool change time, protects the tool tip, extends service life, and reduces costs.
Smart Images
Figure CN224222810U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of end mill technology, and in particular to a tungsten carbide end mill with enhanced tip protection. Background Technology
[0002] Tungsten carbide end mills are widely used in metal cutting, especially in machining materials with high hardness (such as steel, aluminum alloys, and titanium alloys). However, traditional tungsten carbide end mills may still experience problems such as tip wear, chipping, or insufficient damage resistance during use. Therefore, there is a need to develop a tungsten carbide end mill with enhanced tip protection.
[0003] Tungsten carbide end mills with enhanced tip protection significantly improve wear resistance, chipping resistance, and high-temperature resistance, resulting in superior performance during high-load, high-speed cutting. In existing technologies, traditional tungsten carbide end mills lack the ability to extend or retract their tool length. When dealing with workpieces of varying depths or shapes, they may not be able to flexibly adjust the cutting position, leading to limitations in machining efficiency or quality. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides a tungsten carbide end mill with enhanced tip protection, which aims to improve the problem that tungsten carbide end mills may not be able to flexibly adjust the cutting position when facing workpieces of different depths or replicated shapes, resulting in limited processing efficiency or processing quality.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a tungsten carbide end mill with enhanced tip protection, comprising a placement box and a telescopic sleeve. A fixed sleeve is fixedly connected to the outer wall of the telescopic sleeve, and a fixed plate is fixedly connected to the upper surface of the fixed sleeve. A rotating shaft is rotatably connected inside the fixed plate, and a pressure plate is fixedly connected to the outer wall of the rotating shaft. A pressing block is rotatably connected to the lower surface of the rotating shaft, and the outer wall of the pressing block is rotatably connected to the inside of the fixed sleeve. An end mill body is slidably connected inside the telescopic sleeve, and the outer wall of the end mill body is slidably connected to the inside of the fixed sleeve. A pressing groove is formed on the upper surface of the end mill body, and the lower surface of the pressing block is attached to the outer wall of the pressing groove. A sliding assembly is provided inside the placement box, and the sliding assembly is used to slide the tungsten carbide end mill to isolate and protect the tip.
[0006] Preferably, the sliding assembly includes a limiting frame, the outer wall of which is slidably connected to the inside of the placement box, and a first sliding shaft is fixedly connected to both the upper and lower surfaces of the limiting frame.
[0007] Preferably, the upper and lower sides of the placement box are provided with first sliding grooves, and the outer wall of the first sliding shaft is slidably connected to the inner wall of the first sliding groove.
[0008] Preferably, the limiting frame has a sliding box slidably connected inside, and the upper and lower sides of the limiting frame are fixedly connected with rotating shafts.
[0009] Preferably, the upper and lower sides of the sliding box are provided with second sliding grooves, and the outer wall of the rotating shaft is slidably connected to the inner wall of the second sliding groove.
[0010] Preferably, a placement plate is fixedly connected inside the sliding box, and a blade tip protective sleeve is fixedly connected to the inner wall of the sliding box.
[0011] Preferably, the outer wall of the fixing sleeve is attached to the upper surface of the placement plate, and the outer wall of the end mill body is attached to the inner wall of the tip protection sleeve.
[0012] Preferably, the inner wall of the placement box is fitted with a box lid, and the outer wall of the box lid is fixedly connected with a handle.
[0013] This utility model has the following beneficial effects:
[0014] 1. In this utility model, by pressing the pressure plate, the fixed plate, rotating shaft, pressing block and telescopic sleeve work together to drive the end mill body to extend and retract, so that the tool length of the tungsten carbide end mill can be adjusted to adapt to the processing requirements of different depths and diameters. There is no need to purchase multiple fixed length end mills, saving costs.
[0015] 2. In this utility model, by pulling the sliding box, the sliding box can be slid out from the inside of the placement box through the cooperation of the limiting frame, the rotating shaft and the first sliding shaft, which facilitates the storage and retrieval of the cutting tool. By placing the end mill body in the placement box, the tip of the cutting tool can be provided with additional protection, preventing it from directly contacting other hard objects, thereby reducing the risk of tip wear and damage. Attached Figure Description
[0016] Figure 1 A perspective view of a tungsten carbide end mill with enhanced tip protection proposed in this utility model;
[0017] Figure 2 This is a partial structural diagram of the retaining sleeve for a tungsten carbide end mill that enhances tip protection, as proposed in this utility model.
[0018] Figure 3 A partial structural diagram of the end mill body of a tungsten carbide end mill with enhanced tip protection proposed in this utility model;
[0019] Figure 4 This is a partial structural diagram of a tungsten carbide end mill holder for enhancing tip protection, as proposed in this utility model.
[0020] Figure 5This is a partial structural diagram of the sliding box of a tungsten carbide end mill that enhances tip protection according to this utility model.
[0021] Figure 6 This is a partial structural diagram of a limiting frame for a tungsten carbide end mill that enhances tip protection, as proposed in this utility model.
[0022] Legend:
[0023] 1. Placement box; 2. Box cover; 3. Handle; 4. Telescopic sleeve; 5. Fixing sleeve; 6. Fixing plate; 7. Rotating shaft; 8. Pressure wrench; 9. End mill body; 10. Pressing block; 11. First sliding groove; 12. First sliding shaft; 13. Limiting bracket; 14. Sliding box; 15. Second sliding groove; 16. Rotating shaft; 17. Placement plate; 18. Tool tip protective sleeve; 19. Pressing groove. Detailed Implementation
[0024] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0025] Reference Figures 1-3 An embodiment of this utility model provides a tungsten carbide end mill with enhanced tip protection, comprising a placement box 1 and a telescopic sleeve 4. A fixed sleeve 5 is fixedly connected to the outer wall of the telescopic sleeve 4. A fixed plate 6 is fixedly connected to the upper surface of the fixed sleeve 5. A rotating shaft 7 is rotatably connected inside the fixed plate 6. A pressure plate 8 is fixedly connected to the outer wall of the rotating shaft 7. A pressing block 10 is rotatably connected to the lower surface of the rotating shaft 7. The outer wall of the pressing block 10 is rotatably connected inside the fixed sleeve 5. An end mill body 9 is slidably connected inside the telescopic sleeve 4. The outer wall of the end mill body 9 is slidably connected inside the fixed sleeve 5. A pressing groove 19 is provided on the upper surface of the end mill body 9. The lower surface of the pressing block 10 is attached to the outer wall of the pressing groove 19. A sliding assembly is provided inside the placement box 1. The sliding assembly is used to slide the tungsten carbide end mill to isolate and protect the tip.
[0026] Specifically, the telescopic sleeve 4 acts as the fixed sleeve 5 to fix the position, the fixed sleeve 5 provides fixed support for the fixed plate 6, and the fixed plate 6 supports the position of the rotating shaft 7 during rotation. Pressing the pressure plate 8 causes the rotating shaft 7 to rotate, which in turn causes the pressing block 10 to rotate. The fixed sleeve 5 supports the position of the pressing block 10, and the pressing block 10 moves to the outer wall of the pressing groove 19 to press and fix the position of the end mill body 9. When the end mill body 9 is telescopically extended to the required position, the pressing block 10 fixes its position to prevent displacement. By telescopically adjusting the length of the tool, it can adapt to the machining requirements of different depths and diameters. This flexibility makes the end mill suitable for various machining scenarios, especially in scenarios that require frequent tool changes or adapt to cutting at various depths and diameters.
[0027] Reference Figure 4 and Figure 5 The sliding assembly includes a limiting frame 13, the outer wall of the limiting frame 13 is slidably connected to the inside of the placement box 1, and the upper and lower surfaces of the limiting frame 13 are fixedly connected to a first sliding shaft 12.
[0028] Specifically, the first sliding shaft 12 drives and supports the limiting frame 13 to slide inside the placement box 1.
[0029] Reference Figures 4-6 The upper and lower sides of the placement box 1 are provided with first sliding grooves 11. The outer wall of the first sliding shaft 12 is slidably connected to the inner wall of the first sliding groove 11. The inside of the limiting frame 13 is slidably connected to the sliding box 14. The upper and lower sides of the limiting frame 13 are fixedly connected to the rotating shaft 16. The upper and lower sides of the sliding box 14 are provided with second sliding grooves 15. The outer wall of the rotating shaft 16 is slidably connected to the inner wall of the second sliding groove 15. The inside of the sliding box 14 is fixedly connected to the placement plate 17. The inner wall of the sliding box 14 is fixedly connected to the tip protection sleeve 18. The outer wall of the fixing sleeve 5 is attached to the upper surface of the placement plate 17. The outer wall of the end mill body 9 is attached to the inner wall of the tip protection sleeve 18. The inner wall of the placement box 1 is attached to the box cover 2. The outer wall of the box cover 2 is fixedly connected to the handle 3.
[0030] Specifically, firstly, pulling handle 3 opens the lid 2. Then, pulling the sliding box 14 causes the limiting frame 13, driven by the rotating shaft 16, to slide inside the placement box 1. As the limiting frame 13 moves, it pulls the first sliding shaft 12 to slide along the inner wall of the first sliding groove 11. Therefore, the sliding of the first sliding shaft 12 on both sides of the limiting frame 13 along the inner wall of the first sliding groove 11 supports and drives the limiting frame 13 to move inside the placement box 1. When the limiting frame 13 slides to a certain position, pulling the sliding box 14 further supports its movement via the rotating shaft 16 fixed inside the upper and lower sides of the limiting frame 13. The pivot 16 slides along the inner wall of the second sliding groove 15, supporting the position of the sliding box 14 during rotation. The movement of the sliding box 14 facilitates the handling and storage of tungsten carbide end mills by operators. The placement plate 17 holds the tungsten carbide end mills, and the tip protector 18 protects the tip. The sliding box 14 secures the placement plate 17 and the tip protector 18. The tip of the tungsten carbide end mill is very fragile and easily damaged during storage or transportation. The placement box 1 protects the integrity of the end mill during storage and transportation, thereby extending its service life, reducing replacement frequency, and lowering operating costs.
[0031] Working principle: When in use, pressing the pressure plate 8 can drive the rotating shaft 7 to press the pressing block 10 under the support of the fixed plate 6. The pressing block 10 can fix the extension position of the end mill body 9 by pressing the inner wall of the pressing groove 19. When the end mill body 9 needs to move and extend, loosening the pressure plate 8 can facilitate the end mill body 9 to slide inside the extension sleeve 4. By adjusting the length of the extension tungsten carbide end mill, tool change time and production downtime can be reduced, thereby improving production efficiency.
[0032] After pulling handle 3 to open the cover 2, the sliding box 14 is pulled, and the limiting frame 13 is moved by the rotating shaft 16. The limiting frame 13 slides through the inner wall of the first sliding groove 11 via the first sliding shaft 12, thus moving the limiting frame 13 inside the placement box 1. When the limiting frame 13 moves to a certain position, the rotating shaft 16 fixed on the lower surface of the limiting frame 13 is moved by pulling the sliding box 14, which in turn moves through the inner wall of the second sliding groove 15. The sliding of the rotating shaft 16 through the inner wall of the second sliding groove 15 supports and moves the sliding box 14. Moving the sliding box 14 to the outside of the placement box 1 facilitates the placement or retrieval of tungsten carbide end mills. In the production site, end mills need to be frequently changed and used, and are prone to collisions with other tools or equipment. The placement box 1 can isolate the end mills separately, preventing them from being placed randomly on the workbench, which could lead to collisions and damage to the tool tips.
[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 tungsten carbide end mill with enhanced tip protection, comprising a housing (1) and a telescopic sleeve (4), characterized in that: The telescopic sleeve (4) is fixedly connected to a fixed sleeve (5) on its outer wall. A fixed plate (6) is fixedly connected to the upper surface of the fixed sleeve (5). A rotating shaft (7) is rotatably connected inside the fixed plate (6). A pressure plate (8) is fixedly connected to the outer wall of the rotating shaft (7). A pressing block (10) is rotatably connected to the lower surface of the rotating shaft (7). The outer wall of the pressing block (10) is rotatably connected inside the fixed sleeve (5). A milling cutter body (9) is slidably connected inside the telescopic sleeve (4). The outer wall of the milling cutter body (9) is slidably connected inside the fixed sleeve (5). A pressing groove (19) is opened on the upper surface of the milling cutter body (9). The lower surface of the pressing block (10) is attached to the outer wall of the pressing groove (19). A sliding component is provided inside the placement box (1). The sliding component is used to slide and place the tungsten carbide milling cutter to isolate and protect the tip of the cutter.
2. The tungsten carbide end mill with enhanced tip protection according to claim 1, characterized in that: The sliding assembly includes a limiting frame (13), the outer wall of which is slidably connected to the inside of the placement box (1), and a first sliding shaft (12) is fixedly connected to both the upper and lower surfaces of the limiting frame (13).
3. A tungsten carbide end mill with enhanced tip protection according to claim 2, characterized in that: The upper and lower sides of the placement box (1) are provided with first sliding grooves (11), and the outer wall of the first sliding shaft (12) is slidably connected to the inner wall of the first sliding groove (11).
4. A tungsten carbide end mill with enhanced tip protection according to claim 2, characterized in that: The limiting frame (13) is internally slidably connected to a sliding box (14), and the upper and lower sides of the limiting frame (13) are both fixedly connected to a rotating shaft (16).
5. A tungsten carbide end mill with enhanced tip protection according to claim 4, characterized in that: The upper and lower sides of the sliding box (14) are provided with second sliding grooves (15), and the outer wall of the rotating shaft (16) is slidably connected to the inner wall of the second sliding groove (15).
6. A tungsten carbide end mill with enhanced tip protection according to claim 5, characterized in that: The sliding box (14) is fixedly connected to a placement plate (17), and the inner wall of the sliding box (14) is fixedly connected to a blade tip protective sleeve (18).
7. A tungsten carbide end mill with enhanced tip protection according to claim 1, characterized in that: The outer wall of the fixing sleeve (5) is attached to the upper surface of the placement plate (17), and the outer wall of the end mill body (9) is attached to the inner wall of the tip protection sleeve (18).
8. A tungsten carbide end mill with enhanced tip protection according to claim 1, characterized in that: The inner wall of the placement box (1) is fitted with a lid (2), and the outer wall of the lid (2) is fixedly connected with a handle (3).