Hard alloy milling cutter for slotting aerospace pipes

Abstract

The utility model discloses a hard alloy milling cutter for slotting aerospace pipes. The hard alloy milling cutter comprises a connecting rod, a milling cutter cooling assembly located in the connecting rod and a cutter handle length adjusting assembly located at the top of the connecting rod. The milling cutter cooling assembly comprises a cooling liquid inlet, and the cooling liquid inlet is formed in one side of the connecting rod. According to the milling cutter cooling assembly, it is ensured that cooling liquid can rapidly and evenly cover a milling area, the temperature and friction in the cutting process are effectively reduced, and therefore the service life of a cutter is prolonged, and the machining efficiency is improved.

Description

Technical Field

[0001] This utility model relates to a carbide end mill, specifically a carbide end mill used for grooving aerospace pipes, and belongs to the field of tool processing technology. Background Technology

[0002] Aerospace tubing is typically made of high-strength, highly corrosion-resistant materials such as titanium alloys, aluminum alloys, and composite materials. While these materials offer excellent performance, they also present challenges to the machining process. Tubing grooving, a critical step in aerospace manufacturing, demands extremely high precision, surface quality, and machining efficiency. Carbide end mills, with their high hardness, high wear resistance, and red hardness, maintain excellent cutting performance when machining aerospace tubing, making them particularly suitable for machining difficult-to-machine materials such as aerospace tubing.

[0003] In existing technologies, such as the grooving milling cutter disclosed in CN214773097U, a milling cutter body is included. The milling cutter body is composed of a cutter shank shaft, a milling cutter head, and four first milling cutter edges. With the provided first milling cutter edges, second milling cutter edges, protrusions, and reinforcing cutting edges, the milling cutter body will not be easily damaged. At the same time, it is easier and faster to groove the wall panel, saving time and reducing labor intensity. At the same time, grooving will not cause damage, ensuring the accuracy of grooving and making it highly practical.

[0004] The first milling cutter edge, second milling cutter edge, protrusion, and reinforcing cutting head provided in the above-mentioned patent will not easily damage the milling cutter body. However, in actual use, the above-mentioned patent does not have a cooling structure, and its milling cutter edge dissipates heat naturally, which has a very low heat dissipation efficiency. When the milling cutter edge rubs against the workpiece at high speed, it will generate high temperature. High temperature will not only affect the quality of the processed product, but also damage the milling cutter and reduce its life. Utility Model Content

[0005] This invention addresses the problem that the aforementioned milling cutter lacks a cooling structure, relies on natural heat dissipation, resulting in very low heat dissipation efficiency, and generates high temperatures when the milling cutter edge rubs against the workpiece at high speed. These high temperatures not only affect the quality of the processed products but also damage the milling cutter and reduce its lifespan. Therefore, this invention provides a carbide milling cutter for grooving aerospace pipes.

[0006] The present invention achieves the above objectives through the following technical solution: a carbide end mill for grooving aerospace tubing, comprising a connecting rod, an end mill cooling assembly located inside the connecting rod, and a shank length adjustment assembly located at the top of the connecting rod;

[0007] The milling cutter cooling assembly includes a coolant inlet located on one side of the connecting rod. One end of the coolant inlet is connected to a coolant reservoir, and the bottom of the coolant reservoir is connected to a coolant drain channel. The end of the coolant drain channel is connected to multiple coolant distribution channels.

[0008] Preferably, a milling cutter head body is welded to the end of the connecting rod, and the milling cutter head body is made of cemented carbide.

[0009] Preferably, the ends of the multiple sets of coolant distribution channels are provided with coolant drain ports, which are located on the outer surface of the milling cutter head body.

[0010] Preferably, the tool holder length adjustment assembly includes a threaded connecting block, which is welded to the connecting rod, and the surface of the threaded connecting block has multiple sets of first through holes.

[0011] Preferably, a milling cutter holder body is threadedly mounted on the surface of the threaded connecting block, and a threaded mounting groove is provided inside the milling cutter holder body.

[0012] Preferably, the milling cutter holder body has second through holes on both the left and right sides, and limit bolts are installed in the internal threads of the second through holes.

[0013] Preferably, a milling cutter insert is mounted on the outside of the milling cutter head body, and a mounting bolt is detachably installed at the connection between the milling cutter insert and the milling cutter head body.

[0014] The beneficial effects of this utility model are:

[0015] 1) The milling cutter cooling assembly ensures that the coolant can quickly and evenly cover the milling area, effectively reducing the temperature and friction during the cutting process, thereby extending the tool life and improving machining efficiency;

[0016] 2) The tool holder length adjustment component ensures the stability and safety of the tool holder during high-speed rotation. This feature allows users to flexibly adjust the tool holder length according to different processing needs, improving processing adaptability and flexibility. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the milling cutter cooling assembly of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the tool holder length adjustment component of this utility model;

[0020] Figure 4 This utility model Figure 1 A magnified structural diagram of part A in the middle.

[0021] In the diagram: 1. Milling cutter shank body; 2. Milling cutter head body; 3. Connecting rod; 4. Milling cutter cooling assembly; 401. Coolant inlet; 402. Coolant reservoir; 403. Coolant direct discharge channel; 404. Coolant distribution channel; 405. Coolant drain outlet; 5. Shank length adjustment assembly; 501. Threaded connecting block; 502. Limiting bolt; 503. First through hole; 504. Threaded mounting groove; 505. Second through hole; 6. Mounting bolt; 7. Milling cutter insert. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Example 1, as Figures 1 to 4 As shown, a carbide end mill for grooving aerospace tubing includes a connecting rod 3, an end mill cooling assembly 4 located inside the connecting rod 3, and a shank length adjustment assembly 5 located at the top of the connecting rod 3.

[0024] The milling cutter cooling assembly 4 includes a coolant inlet 401, which is located on one side of the connecting rod 3. One end of the coolant inlet 401 is connected to a coolant reservoir 402, and the bottom of the coolant reservoir 402 is connected to a coolant direct discharge channel 403. The end of the coolant direct discharge channel 403 is connected to multiple sets of coolant distribution channels 404. Coolant is introduced into the coolant reservoir 402 through the coolant inlet 401. Then, the coolant is quickly distributed to the multiple sets of coolant distribution channels 404 through the coolant direct discharge channel 403. Finally, the coolant is directly sprayed onto the outer surface of the milling cutter head body 2 through the coolant outlet 405.

[0025] Example 2: In addition to all the technical features in Example 1, this example also includes: a milling cutter head body 2 welded to the end of the connecting rod 3. The milling cutter head body 2 is made of cemented carbide. The cemented carbide milling cutter head body 2 has extremely high hardness and wear resistance, and can withstand the high-intensity cutting force and high-temperature environment during aerospace tube processing, thereby reducing tool wear and replacement frequency and lowering production costs.

[0026] The ends of the multiple sets of coolant distribution channels 404 are provided with coolant drain ports 405, which are located on the outer surface of the milling cutter head body 2. This arrangement ensures that the coolant can quickly and evenly cover the milling area, effectively reducing the temperature and friction during the cutting process, thereby extending the tool life and improving machining efficiency.

[0027] The tool holder length adjustment assembly 5 includes a threaded connecting block 501, which is welded to the connecting rod 3. The surface of the threaded connecting block 501 has multiple sets of first through holes 503. This setting allows the user to flexibly adjust the tool holder length according to different processing requirements, improving processing adaptability and flexibility.

[0028] In the third embodiment, in addition to all the technical features in the first embodiment, the following additional features are included: a milling cutter holder body 1 is threadedly mounted on the surface of the threaded connecting block 501, and a threaded mounting groove 504 is provided inside the milling cutter holder body 1. The threaded connecting block 501 is inserted into the threaded mounting groove 504 inside the milling cutter holder body 1 and rotated to a suitable position.

[0029] The milling cutter holder body 1 has second through holes 505 on both the left and right sides. The internal threads of the second through holes 505 are fitted with limit bolts 502. The limit bolts 502 pass through the first through hole 503 and the second through hole 505, providing additional fixing for the threaded connecting block 501 and the milling cutter holder body 1, ensuring the stability and safety of the cutter holder when rotating at high speed.

[0030] The milling cutter head body 2 is equipped with a milling cutter insert 7 on its outside. The connection between the milling cutter insert 7 and the milling cutter head body 2 is detachably fitted with a mounting bolt 6. The milling cutter insert 7 and the milling cutter head body 2 are detachably connected by the mounting bolt 6. This setting makes insert replacement simple and quick, reduces downtime, improves production efficiency, and also facilitates tool maintenance and upkeep, extending the overall service life.

[0031] When using this carbide end mill, firstly, the coolant is introduced into the coolant reservoir 402 through the coolant inlet 401 via the end mill cooling assembly 4. Then, the coolant is rapidly distributed to multiple coolant distribution channels 404 via the coolant direct discharge channel 403. Finally, the coolant is directly sprayed onto the outer surface of the end mill head body 2 from the coolant outlet 405. The end mill insert 7 is detachably connected to the end mill head body 2 via mounting bolts 6. This design makes insert replacement simple and quick, reduces downtime, and improves production efficiency. It also facilitates tool maintenance and extends the overall lifespan of the end mill. Service life; by using the tool holder length adjustment component 5, the threaded connecting block 501 is inserted into the threaded mounting groove 504 inside the milling cutter holder body 1 and rotated to the appropriate position. Then, the first through hole 503 and the second through hole 505 are aligned, and the limiting bolt 502 passes through the first through hole 503 and the second through hole 505, providing additional fixing for the threaded connecting block 501 and the milling cutter holder body 1, ensuring the stability and safety of the tool holder during high-speed rotation. Finally, the milling cutter is installed in the corresponding position on the machine tool, the machine tool is started, and the milling cutter performs grooving processing on the aerospace tube according to the preset trajectory and parameters.

[0032] 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 carbide end mill for grooving aerospace tubing, characterized in that: Includes a connecting rod (3), a milling cutter cooling assembly (4) located inside the connecting rod (3), and a tool holder length adjustment assembly (5) located at the top of the connecting rod (3); The milling cutter cooling assembly (4) includes a coolant inlet (401), which is located on one side of the connecting rod (3). One end of the coolant inlet (401) is connected to a coolant reservoir (402), and the bottom of the coolant reservoir (402) is connected to a coolant direct discharge channel (403). The end of the coolant direct discharge channel (403) is connected to multiple sets of coolant diversion channels (404).

2. The carbide end mill according to claim 1, characterized in that: The end of the connecting rod (3) is welded with a milling cutter head body (2), which is made of cemented carbide.

3. The carbide end mill according to claim 2, characterized in that: The ends of the multiple sets of coolant distribution channels (404) are provided with coolant drain ports (405), which are located on the outer surface of the milling cutter head body (2).

4. The carbide end mill according to claim 1, characterized in that: The tool holder length adjustment assembly (5) includes a threaded connecting block (501), which is welded to the connecting rod (3). The surface of the threaded connecting block (501) has multiple sets of first through holes (503).

5. The carbide end mill according to claim 4, characterized in that: The threaded connection block (501) has a milling cutter holder body (1) threadedly mounted on its surface, and the milling cutter holder body (1) has a threaded mounting groove (504) inside.

6. The carbide end mill according to claim 5, characterized in that: The milling cutter holder body (1) has a second through hole (505) on both the left and right sides, and a limit bolt (502) is installed in the internal thread of the second through hole (505).

7. The carbide end mill according to claim 2, characterized in that: The milling cutter head body (2) is equipped with a milling cutter blade (7) on its outside, and a mounting bolt (6) is detachably installed at the connection between the milling cutter blade (7) and the milling cutter head body (2).

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