High-cutting-force ultra-fine particle tungsten steel forming cutter

Abstract

The utility model belongs to the technical field of machining cutters, particularly relates to a high-cutting-force ultra-fine particle tungsten steel forming cutter, and aims to solve the problems that an existing device is of an integral structure, when a cutting edge of a cutter core is abraded or damaged in the using process, the whole cutter needs to be replaced, great waste is caused, and machining cost is increased. According to the scheme, the tool comprises a tool bar, a tool bit is arranged at one end of the tool bar, and a cutting edge is spirally installed on the surface of the tool bit in a surrounding mode; the tool has the advantages that the tool is of a detachable structure, when the cutting edge of the tool bit is abraded or damaged, only the tool bit needs to be replaced, the whole tool does not need to be replaced, machining cost is reduced, tool bit replacement operation is simple, the tool bit and the tool bar can be easily separated by unscrewing the limiting bolt and rotating and moving the rotating sleeve, the tool bit can be conveniently and rapidly replaced, and machining efficiency is improved. The downtime is reduced, the production efficiency is improved, cutting contact points are increased due to the fact that the cutting edges on the tool bit are distributed in a tooth shape, and the cutting efficiency is improved.

Description

Technical Field

[0001] This utility model relates to a thread milling cutter, specifically a high-cutting-force ultra-fine particle tungsten carbide forming tool, belonging to the field of machining tool technology. Background Technology

[0002] With the booming development of advanced manufacturing today, the machining field has put forward stringent requirements for the precision, surface quality and processing efficiency of parts. As a new type of cutting tool material, ultrafine tungsten steel has gradually emerged in recent years. Its unique microstructure gives the material higher hardness, strength and good wear resistance, and theoretically it can play an advantage in the processing of high-hardness materials.

[0003] In the prior art, such as the tin bronze tungsten carbide forming tool disclosed in announcement number CN219852308U, through reasonable size design, the cutting effect is better, the operating efficiency is higher, the product quality is further improved, the processing time of the forming milling cutter is reduced, the wear is reduced, the smoothness of the milled surface is improved, and the workpiece wear is reduced, thereby improving the production efficiency and profit of the enterprise. However, the above-mentioned prior art has the following shortcomings: the above-mentioned tungsten carbide forming tool is an integral structure. During use, when the cutting edge of the tool core is worn or damaged, the entire tool needs to be replaced, which causes great waste and increases the processing cost. Utility Model Content

[0004] The purpose of this invention is to provide a high-cutting-force ultra-fine particle tungsten carbide forming tool to address the problem that the above-mentioned device is an integral structure, and that the entire tool needs to be replaced when the cutting edge of the tool core is worn or damaged during use, resulting in great waste and increased processing costs.

[0005] This utility model achieves the above-mentioned objective through the following technical solution: a high-cutting-force ultra-fine particle tungsten carbide forming tool, including a tool holder;

[0006] One end of the tool holder is equipped with a tool head, and the surface of the tool head is spirally wrapped with cutting edges. A tool head connecting rod extends from the center of the tool head, and a limiting square hole is opened in the tool head connecting rod. One end of the tool holder is equipped with a plug hole that matches the tool head connecting rod. A limiting square post is fixed to the bottom of the plug hole. The tool head is detachably installed at one end of the tool holder through the tool head connecting rod, plug hole, limiting square post and limiting square hole.

[0007] As a further embodiment of this utility model: the outer side of the cutter head connecting rod is integrally formed with a plug rod, the surface of the plug rod is provided with a slot, the surface of the cutter bar is slidably connected with a rotating sleeve, the inner wall of the rotating sleeve is fixedly installed with a locking block, the surface of the cutter bar is provided with an L-shaped limiting groove, and the locking block is slidably connected in the L-shaped limiting groove.

[0008] As a further improvement of this utility model: one end of the tool holder is integrally formed with a locking protrusion, and the surface of the tool head connecting rod is provided with a locking groove that matches the locking protrusion.

[0009] As a further embodiment of this utility model: a fixing ring is fixedly installed on the surface of the tool holder, and a spring is sleeved on the surface of the tool holder and on one side of the fixing ring, with the two ends of the spring abutting against the fixing ring and the rotating sleeve respectively.

[0010] As a further improvement of this utility model: a limit bolt is connected to the threaded hole on the surface of the rotating sleeve, and one end of the limit bolt passes through the rotating sleeve and is threaded to the surface of the tool holder.

[0011] As a further improvement of this utility model: the cutting edge is toothed, and chip removal grooves are naturally formed between adjacent spiral cutting edges.

[0012] The beneficial effects of this utility model are:

[0013] This utility model utilizes a combination of structures including a cutter head connecting rod, a plug-in hole, an L-shaped limiting groove, a plug-in rod, a slot, a locking protrusion, and a rotating sleeve. The cutter adopts a detachable structure, so when the cutting edge of the cutter head is worn or damaged, only the cutter head needs to be replaced, instead of replacing the entire cutter, which reduces processing costs. The cutter head replacement operation is simple: loosen the limiting bolt, rotate and move the rotating sleeve to easily separate the cutter head from the cutter shank, which facilitates quick cutter head replacement, reduces downtime, and improves production efficiency.

[0014] The tool head and tool holder are made of ultra-fine tungsten carbide material, which has high hardness and strength and can withstand large cutting forces. The cutting edges are toothed and spirally wrapped around the surface of the tool head, which increases the cutting contact points and improves cutting efficiency. The chip grooves that are naturally formed between adjacent cutting edges can use centrifugal force to assist in chip removal, avoid chip accumulation, ensure a smooth cutting process, and extend tool life. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the tool holder, the locking protrusion, and the L-shaped limiting groove in this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the card protrusion, rotating sleeve and card slot in this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the insertion hole, the limiting square rod, and the cutter head connecting rod in this utility model;

[0019] Figure 5This is a schematic diagram of the structure of the fixing ring, spring, locking block and limiting bolt in this utility model;

[0020] In the diagram: 1. Tool holder; 2. Tool head; 3. Cutting edge; 4. Chip removal groove; 5. Tool head connecting rod; 6. Insertion hole; 7. Limiting square post; 8. Limiting square hole; 9. L-shaped limiting groove; 10. Insertion rod; 11. Slot; 12. Retaining ring; 13. Spring; 14. Locking block; 15. Limiting bolt; 16. Locking protrusion; 17. Rotating sleeve; 18. Locking groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0022] like Figures 1 to 5 As shown, a high-cutting-force ultra-fine particle tungsten carbide forming tool includes a tool holder 1;

[0023] A cutter head 2 is provided at one end of the cutter bar 1. A cutting edge 3 is spirally mounted on the surface of the cutter head 2. A cutter head connecting rod 5 extends from the center of the cutter head 2. A limiting square hole 8 is opened in the cutter head connecting rod 5. An insertion hole 6 adapted to the cutter head connecting rod 5 is opened inside one end of the cutter bar 1. A limiting square post 7 is fixed at the bottom of the insertion hole 6. The cutter head 2 is detachably installed at one end of the cutter bar 1 through the cutter head connecting rod 5, the insertion hole 6, the limiting square post 7, and the limiting square hole 8.

[0024] When the cutting edge 3 of the tool head 2 is worn or damaged, only the tool head 2 needs to be replaced, avoiding the scrapping of the entire tool and significantly reducing machining costs. In terms of machining flexibility, tool heads 2 with different specifications of cutting edges 3 can be quickly replaced according to different machining needs, meeting diverse machining tasks and improving machining efficiency.

[0025] Furthermore, the outer side of the cutter head connecting rod 5 is integrally formed with a plug rod 10, the surface of the plug rod 10 is provided with a slot 11, the surface of the cutter bar 1 is slidably connected with a rotating sleeve 17, the inner wall of the rotating sleeve 17 is fixedly installed with a locking block 14, the surface of the cutter bar 1 is provided with an L-shaped limiting groove 9, and the locking block 14 is slidably connected in the L-shaped limiting groove 9.

[0026] The insertion rod 10 and surface groove 11 on the cutter head connecting rod 5 cooperate with the retaining block 14 on the inner wall of the rotating sleeve 17. When the retaining block 14 is embedded in the groove 11, it can effectively prevent the cutter head 2 from loosening due to radial force during cutting, ensuring a tight connection between the cutter head 2 and the cutter shank 1, and ensuring stable cutting operation. In terms of ease of operation, the sliding connection design between the L-shaped limiting groove 9 and the retaining block 14 makes the installation and disassembly of the rotating sleeve 17 very convenient. During installation, simply slide the retaining block 14 into the vertical part of the L-shaped limiting groove 9, and the rotating sleeve 17 can be quickly installed in place. When disassembling the cutter head 2, rotate the rotating sleeve 17 in the opposite direction, and the retaining block 14 slides out along the horizontal part of the L-shaped limiting groove 9, which can release the lock on the cutter head 2, making it easy to replace the cutter head 2.

[0027] Furthermore, one end of the cutter bar 1 is integrally formed with a locking protrusion 16, and the surface of the cutter head connecting rod 5 is provided with a locking groove 18 that matches the locking protrusion 16.

[0028] The locking protrusion 16 and the locking groove 18 fit tightly together. When the tool holder 1 drives the tool head 2 to rotate at high speed for cutting, it can effectively resist the torsional stress generated by the cutting force, prevent the tool head 2 from rotating relative to the tool holder 1, ensure that the cutting edge 3 on the tool head 2 is always in a precise position, maintain a stable cutting state, and ensure machining accuracy. At the same time, when assembling the tool, simply insert the tool head connecting rod 5 into the insertion hole 6 of the tool holder 1, and then align the locking protrusion 16 with the locking groove 18 to quickly complete the connection of this part, reducing the complicated alignment and fastening operation steps and improving assembly efficiency. Example 2

[0029] Improvements based on Example 1:

[0030] Furthermore, a fixing ring 12 is fixedly installed on the surface of the tool holder 1, and a spring 13 is sleeved on the surface of the tool holder 1 and on one side of the fixing ring 12. The two ends of the spring 13 abut against the fixing ring 12 and the rotating sleeve 17, respectively.

[0031] When the cutter head 2 needs to be replaced, loosening the limit bolt 15 and rotating the rotating sleeve 17 in the opposite direction will cause the spring force of the spring 13 to assist the rotating sleeve 17 in moving away from the cutter head 2, allowing the locking block 14 to quickly disengage from the slot 11, reducing the difficulty of disassembly and improving the efficiency of replacing the cutter head 2.

[0032] Furthermore, a limit bolt 15 is connected to the threaded hole on the surface of the rotating sleeve 17, and the limit bolt 15 is threaded through one end of the rotating sleeve 17 and connected to the surface of the tool holder 1.

[0033] The limiting bolt 15 tightly locks the rotating sleeve 17 to the tool holder 1, effectively preventing the rotating sleeve 17 from rotating accidentally due to vibration or external force during high-speed cutting, ensuring the continuous and stable operation of the cutting work. When it is necessary to disassemble the tool head 2 for replacement or maintenance, simply loosen the limiting bolt 15 with a tool to release the fixing restriction on the rotating sleeve 17, and then the rotating sleeve 17 can be rotated and moved smoothly, thereby quickly separating the tool head 2 from the tool holder 1. Similarly, when reassembling the tool, tightening the limiting bolt 15 can quickly fix the position of the rotating sleeve 17. The operation is simple and efficient, improving the efficiency of tool maintenance and component replacement.

[0034] Furthermore, the cutting edges 3 are toothed, and chip removal grooves 4 are naturally formed between adjacent spiral cutting edges 3.

[0035] The toothed cutting edge 3 increases the contact points with the workpiece. When the cutter head 2 rotates, it can work like multiple small cutting units at the same time, quickly removing material and greatly improving cutting efficiency. The naturally formed chip groove 4 fits closely with the toothed cutting edge 3. While the cutting edge 3 is cutting the material, the chips are smoothly guided into the chip groove 4, ensuring the smoothness of the cutting process.

[0036] Working principle: When in use, the assembled tool is installed on the machine tool and the machine tool is started. The tool holder 1 drives the tool head 2 to rotate at high speed. The cutting edge 3 on the surface of the tool head 2 performs milling on the workpiece. Since the cutting edge 3 is toothed and spirally wrapped around the surface of the tool head 2, it can efficiently cut the workpiece material. During the cutting process, the generated chips are smoothly discharged along the chip groove 4 between adjacent cutting edges 3, avoiding chip accumulation that affects the cutting effect and tool life.

[0037] When the cutting edge 3 of the cutter head 2 is worn or damaged and needs to be replaced, first loosen the limiting bolt 15 to disengage it from the surface of the tool holder 1. Then, rotate the rotating sleeve 17 in the opposite direction to allow the locking block 14 to slide out along the horizontal part of the L-shaped limiting groove 9 and into the vertical part. At this time, the rotating sleeve 17 can move axially on the tool holder 1. Move the rotating sleeve 17 away from the cutter head 2 to compress the spring 13, causing the locking block 14 to disengage from the locking groove 11 on the cutter head connecting rod 5. Then, pull the cutter head connecting rod 5 of the cutter head 2 out of the insertion hole 6 of the tool holder 1 to remove the worn cutter head 2. When replacing the new cutter head 2, follow the above assembly steps and reverse the operation to complete the replacement of the cutter head 2, ensuring that the tool can continue to perform cutting operations efficiently.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-cutting-force ultrafine particle tungsten carbide forming tool, comprising a tool holder (1); Its features are: One end of the tool holder (1) is provided with a tool head (2), and a cutting edge (3) is spirally mounted on the surface of the tool head (2). A tool head connecting rod (5) extends from the center of the tool head (2). A limiting square hole (8) is opened in the tool head connecting rod (5). A plug hole (6) adapted to the tool head connecting rod (5) is opened in the interior of one end of the tool holder (1). A limiting square post (7) is fixed in the bottom of the plug hole (6). The tool head (2) is detachably installed at one end of the tool holder (1) through the tool head connecting rod (5), the plug hole (6), the limiting square post (7) and the limiting square hole (8).

2. The high-cutting-force ultrafine particle tungsten carbide forming tool according to claim 1, characterized in that: The outer side of the cutter head connecting rod (5) is integrally formed with a plug rod (10). The surface of the plug rod (10) is provided with a slot (11). The surface of the cutter bar (1) is slidably connected with a rotating sleeve (17). The inner wall of the rotating sleeve (17) is fixedly installed with a locking block (14). The surface of the cutter bar (1) is provided with an L-shaped limiting groove (9). The locking block (14) is slidably connected in the L-shaped limiting groove (9).

3. The high-cutting-force ultrafine particle tungsten carbide forming tool according to claim 1, characterized in that: One end of the cutter bar (1) is integrally formed with a locking protrusion (16), and the surface of the cutter head connecting rod (5) is provided with a locking groove (18) that matches the locking protrusion (16).

4. The high-cutting-force ultrafine particle tungsten carbide forming tool according to claim 1, characterized in that: A fixing ring (12) is fixedly installed on the surface of the tool bar (1). A spring (13) is sleeved on the surface of the tool bar (1) and on one side of the fixing ring (12). The two ends of the spring (13) abut against the fixing ring (12) and the rotating sleeve (17) respectively.

5. The high-cutting-force ultrafine particle tungsten carbide forming tool according to claim 4, characterized in that: The screw hole on the surface of the rotating sleeve (17) is threaded with a limit bolt (15), and one end of the limit bolt (15) is threaded through the rotating sleeve (17) and connected to the surface of the tool holder (1).

6. The high-cutting-force ultrafine particle tungsten carbide forming tool according to claim 5, characterized in that: The cutting edge (3) is toothed, and chip grooves (4) are naturally formed between adjacent spiral cutting edges (3).

Images