Aluminum end mill with inner cooling structure

Abstract

The utility model relates to the technical field of end milling cutters, in particular to an aluminum end milling cutter with an inner cooling structure, which comprises a milling cutter body, a milling cutter inner cooling mechanism and a cutter head material composition mechanism, the milling cutter inner cooling mechanism and the cutter head material composition mechanism are positioned inside the milling cutter body, the milling cutter inner cooling mechanism comprises a cooling liquid storage bin, and a cooling liquid lead-in port is arranged on one side of the cooling liquid storage bin. According to the milling cutter inner cooling mechanism, when the milling cutter inner cooling mechanism is used, high-pressure cooling liquid is guided into the cooling liquid storage bin through the cooling liquid guiding-in opening and conveyed to the cooling liquid flowing-out opening through the flowing-out pipeline to flow out, the surface of a milling cutter head can be rapidly washed through the arrangement, and the milling cutter head is cooled through the flowing cooling liquid; the internal temperature of the milling cutter head can be quickly reduced by matching with the circulating pipeline and the internal cooling spiral pipeline, and the problems that the milling cutter head can generate more heat during aluminum material machining, the milling cutter head is damaged due to excessive heat accumulation, and the service life of the milling cutter head is affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of end mills, in particular to an end mill for aluminum with an internal cooling structure. Background Art

[0002] End mill is the most commonly used milling cutter on CNC machine tools. There are cutting knives on the cylindrical surface and end face of the end mill. They can cut at the same time or separately. It is mainly used for plane milling, groove milling, step milling and profile milling.

[0003] The patent specification with the announcement number CN215392739U discloses a vertical milling cutter for cutting silicon aluminum alloy, including: a handle, a cutter head and an end blade structure which are integrally arranged; the vertical milling cutter can mainly improve the strength, stability and processing efficiency of the vertical milling cutter. However, in the implementation of the relevant technology, it is found that the vertical milling cutter of the above design has the following problems: due to the low plasticity and low melting point of aluminum alloy, the problem of tool sticking is serious during aluminum material processing, the chip removal performance is poor, and the surface roughness is also very high. During cutting, a certain amount of friction will be generated between the milling cutter and the workpiece, and the friction will generate a lot of heat, which will cause the waste chips to stick to the surface of the milling cutter, affecting the cutting performance.

[0004] In view of this, an aluminum end mill with an internal cooling structure is provided to overcome the above-mentioned defects. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes an aluminum end mill with an internal cooling structure.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an aluminum end mill with an internal cooling structure, comprising a milling cutter body, and a milling cutter internal cooling mechanism and a cutter head material composition mechanism located inside the milling cutter body, the milling cutter internal cooling mechanism comprising a coolant storage bin, a coolant inlet port is provided on one side of the coolant storage bin, an outflow pipe is provided at the bottom of the coolant storage bin, the other end of the outflow pipe is connected to the coolant outflow port, a circulation pipe is provided at the bottom center of the coolant storage bin, and one end of the circulation pipe is connected to an internal cooling spiral pipe.

[0007] As a further description of the above technical solution: the material composition structure of the cutter head includes a chromium alloy layer, and a titanium carbide layer is arranged inside the chromium alloy layer, so that the milling cutter head has a series of excellent properties such as strong drilling ability, high hardness, wear resistance, good toughness, heat resistance, and corrosion resistance.

[0008] As a further description of the above technical solution: the interior of the titanium carbide layer is provided with a silicone coating, and the interior of the silicone coating is provided with a cemented carbide base layer, so that the milling cutter head is not easy to wear and the dimensional accuracy and smoothness of the processed hole diameter are better, and the service life is longer.

[0009] As a further description of the above technical solution: a milling cutter head is arranged at the bottom of the milling cutter body, a shank is arranged above the milling cutter body, and a threaded connection block is arranged at the connection between the shank and the milling cutter head, wherein the threaded connection block is used to connect the shank and the milling cutter head.

[0010] As a further description of the above technical solution: the threaded connection block and the milling cutter head are welded, and the threaded connection block and the tool handle are threaded. This arrangement facilitates the disassembly, replacement and installation of the milling cutter head.

[0011] As a further description of the above technical solution: two groups of pressing rods are installed inside the threaded connection block, and the upper parts of the two groups of pressing rods are connected to limiting rods. This arrangement can improve the problem that the threaded connection between the tool handle and the milling cutter head is easily loosened due to vibration, thereby reducing the tight and stable connection performance between the tool handle and the milling cutter head, and also greatly reducing the performance problem of the milling cutter head.

[0012] As a further description of the above technical solution: a return spring is connected to the connection between the two groups of pressing rods.

[0013] The utility model has the following beneficial effects:

[0014] 1) Through the internal cooling mechanism of the milling cutter, high-pressure coolant is introduced into the coolant storage tank through the coolant inlet during use, and then transported to the coolant outlet through the outflow pipe. This setting can quickly rinse the surface of the milling cutter head and cool the milling cutter head through the flowing coolant. In combination with the circulating pipe and the internal cooling spiral pipe, the internal temperature of the milling cutter head can be quickly reduced, which improves the problem that the milling cutter head will generate more heat when processing aluminum materials. Excessive heat accumulation will cause damage to the milling cutter head and affect its service life.

[0015] 2) Through the set cutter head material composition structure, in which the chromium alloy layer is matched with the titanium carbide layer, the silicone coating and the cemented carbide base layer, the milling cutter head has a series of excellent properties such as strong drilling ability, high hardness, wear resistance, good toughness, heat resistance, corrosion resistance, etc., is not easy to wear, and the dimensional accuracy and smoothness of the processed hole diameter are better, and the service life is longer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2Schematic diagram of the internal structure of the milling cutter body of the present invention;

[0018] Figure 3 This is a schematic diagram of the internal structure of the milling cutter head of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the material composition mechanism of the cutter head of the utility model.

[0020] Legend:

[0021] 1. Milling cutter body; 2. Milling cutter head; 3. Cutter handle; 4. Milling cutter internal cooling mechanism; 401. Coolant storage tank; 402. Coolant outlet; 403. Coolant inlet; 404. Outflow pipe; 405. Circulation pipe; 406. Internal cooling spiral pipe; 5. Cutter head material composition structure; 501. Carbide base layer; 502. Silicone coating; 503. Titanium carbide layer; 504. Chrome alloy layer; 6. Press rod; 7. Threaded connection block; 8. Limit rod; 9. Reset spring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Embodiment 1

[0023] like Figures 1 to 4 As shown, the utility model provides an aluminum end mill with an internal cooling structure: comprising a milling cutter body 1, and a milling cutter internal cooling mechanism 4 and a cutter head material composition mechanism 5 located inside the milling cutter body 1, wherein the milling cutter internal cooling mechanism 4 comprises a coolant storage tank 401;

[0024] A coolant inlet 403 is provided on one side of the coolant storage bin 401, an outflow pipe 404 is provided at the bottom of the coolant storage bin 401, the other end of the outflow pipe 404 is connected to the coolant outlet 402, a circulation pipe 405 is provided at the bottom center of the coolant storage bin 401, and one end of the circulation pipe 405 is connected to an internal cooling spiral pipe 406.

[0025] During specific implementation: through the set milling cutter internal cooling mechanism 4, when in use, the high-pressure coolant is introduced into the coolant storage tank 401 through the coolant inlet port 403, and is transported to the coolant outlet port 402 through the outflow pipe 404. This setting can quickly rinse the surface of the milling cutter head 2 and cool the milling cutter head 2 by the flowing coolant. In conjunction with the circulating pipe 405 and the internal cooling spiral pipe 406, the internal temperature of the milling cutter head 2 can be quickly reduced, thereby improving the problem that the milling cutter head 2 will generate more heat when processing aluminum materials. Excessive heat accumulation will cause damage to the milling cutter head 2 and affect its service life. Embodiment 2

[0026] In addition to all the technical features of the first embodiment, this embodiment also includes:

[0027] As a further implementation scheme of the above technical scheme: the cutter head material composition structure 5 includes a chromium alloy layer 504, and a titanium carbide layer 503 is arranged inside the chromium alloy layer 504, so that the milling cutter head 2 has a series of excellent properties such as strong drilling ability, high hardness, wear resistance, good toughness, heat resistance, and corrosion resistance.

[0028] As a further implementation scheme of the above technical scheme: a silicone coating 502 is arranged inside the titanium carbide layer 503, and a cemented carbide base layer 501 is arranged inside the silicone coating 502, so that the milling cutter head 2 is not easy to wear and the dimensional accuracy and smoothness of the processed hole diameter are better, and the service life is longer.

[0029] As a further implementation scheme of the above technical scheme: a milling cutter head 2 is arranged at the bottom of the milling cutter body 1, a shank 3 is arranged above the milling cutter body 1, and a threaded connection block 7 is arranged at the connection between the shank 3 and the milling cutter head 2, wherein the threaded connection block 7 is used to connect the shank 3 and the milling cutter head 2.

[0030] As a further implementation scheme of the above technical scheme: the threaded connection block 7 and the milling cutter head 2 are welded, and the threaded connection block 7 and the shank 3 are threaded. This arrangement facilitates the disassembly, replacement and installation of the milling cutter head 2. Embodiment 3

[0031] In addition to all the technical features of the first embodiment, this embodiment also includes:

[0032] As a further implementation scheme of the above technical scheme: two groups of pressing rods 6 are installed inside the threaded connection block 7, and the upper part of the two groups of pressing rods 6 is connected to a limiting rod 8. This arrangement can improve the problem that the threaded connection between the shank 3 and the milling cutter head 2 is easily loosened after vibration, thereby reducing the tight and stable connection performance between the shank 3 and the milling cutter head 2, and also greatly reducing the performance problem of the milling cutter head 2.

[0033] As a further implementation of the above technical solution: a return spring 9 is connected to the connection between the two groups of pressing rods 6.

[0034] During specific implementation, when the milling cutter head 2 needs to be replaced, the pressing rod 6 can be pressed to drive the reset spring 9 to contract, and at the same time, the limiting rod 8 can be moved inward to disengage from the shank 3, and then the milling cutter head 2 and the threaded connection block 7 are rotated. When the threaded connection block 7 is disengaged from the inside of the shank 3, the replacement of the milling cutter head 2 can be completed. This arrangement improves the problem that the general machining cutting edge of the existing milling cutter body 1 is always concentrated at one point for machining, so that the milling cutter head 2 is more prone to wear and needs to be discarded together with the shank 3 when replaced, wasting resources. At the same time, this arrangement can also improve the problem that the threaded connection between the shank 3 and the milling cutter head 2 is easy to loosen after vibration, reduces the tight and stable performance of the connection between the shank 3 and the milling cutter head 2, and greatly reduces the problem of the performance of the milling cutter head 2.

[0035] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An aluminum end mill with an internal cooling structure, comprising a milling cutter body (1), a milling cutter internal cooling mechanism (4) and a cutter head material composition mechanism (5) located inside the milling cutter body (1), characterized in that: The milling cutter internal cooling mechanism (4) comprises a coolant storage tank (401); A coolant inlet (403) is provided on one side of the coolant storage bin (401), an outflow pipe (404) is provided at the bottom of the coolant storage bin (401), the other end of the outflow pipe (404) is connected to the coolant outlet (402), and a circulation pipe (405) is provided at the center of the bottom of the coolant storage bin (401), one end of the circulation pipe (405) is connected to an internal cooling spiral pipe (406).

2. The aluminum end mill according to claim 1, characterized in that: The tool head material composition structure (5) comprises a chromium alloy layer (504), and a titanium carbide layer (503) is arranged inside the chromium alloy layer (504).

3. The aluminum end mill according to claim 2, characterized in that: An organic silicon coating (502) is provided inside the titanium carbide layer (503), and a hard alloy base layer (501) is provided inside the organic silicon coating (502).

4. The aluminum end mill according to claim 1 or 3, characterized in that: A milling cutter head (2) is arranged at the bottom of the milling cutter body (1), a shank (3) is arranged above the milling cutter body (1), and a threaded connection block (7) is arranged at the connection between the shank (3) and the milling cutter head (2).

5. The aluminum end mill according to claim 4, characterized in that: The threaded connection block (7) and the milling cutter head (2) are connected by welding, and the threaded connection block (7) and the tool handle (3) are connected by threads.

6. The aluminum end mill according to claim 4, characterized in that: Two groups of pressing rods (6) are installed inside the threaded connection block (7), and the upper parts of the two groups of pressing rods (6) are connected to limiting rods (8).

7. The aluminum end mill according to claim 6, characterized in that: A return spring (9) is connected to the connection point between the two groups of pressing rods (6).

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