A helical milling cutter with an in-channel cooling channel

Abstract

This utility model discloses a spiral end mill with an internal cooling channel, including a base, a cutter post, an internal cooling channel assembly disposed inside the guide post, and a protective mounting assembly disposed on the surface of the base. The internal cooling channel assembly includes an opening at one end of the cutter post surface, with a liquid outlet inside the opening. A placement opening is provided at one end of the base, with a liquid inlet inside the placement opening. The base and the cutter post are connected to form a complete end mill structure. The placement opening at one end of the base increases the connection position, and the liquid inlet is provided inside the placement opening. The cutter post end has a liquid outlet inside the opening. The liquid inlet and the liquid outlet are connected, facilitating the passage of cooling liquid to cool the entire structure. Thus, the spiral end mill has a well-cooled internal cooling channel during use.

Description

Technical Field

[0001] This utility model relates to the field of milling cutter equipment technology, specifically a spiral milling cutter with an internal cooling channel. Background Technology

[0002] A milling cutter is a rotating cutting tool with one or more cutting teeth used for milling operations. During operation, the teeth sequentially and intermittently remove the excess material from the workpiece. Milling cutters are mainly used on milling machines to machine planes, steps, grooves, shaped surfaces, and cut off workpieces. They are used on horizontal milling machines for machining planes. The cutting teeth are distributed on the circumference of the milling cutter and are classified into two types according to tooth shape: straight teeth and helical teeth. They are also classified into two types according to the number of teeth: coarse teeth and fine teeth. Coarse helical milling cutters have fewer teeth, higher tooth strength, and a larger chip space, making them suitable for roughing; fine-tooth milling cutters are suitable for finishing.

[0003] A publicly available patent (publication number CN220426941U) discloses a spiral end mill, comprising a drill rod, an upper limit plate, a lower limit plate, a first pipe connector, a sealing ring, and an adjusting component. The drill rod has a cylindrical hole and a through hole communicating with the cylindrical hole, located between the upper and lower limit plates. A first bearing is positioned between the upper and lower limit plates, and a second bearing, rotatably connected to the bottom of the lower limit plate, is mounted thereon. A telescopic protective cover is provided at the bottom of the second bearing. The first pipe connector is mounted on the first bearing and contains an inner tube communicating with the interior of the first bearing. The sealing ring is located within the first pipe connector, with a clearance fit between the sealing ring and the inner tube. A sliding ring is slidably mounted within the sealing ring, abutting against the sealing ring. The adjusting component is spirally mounted within the first pipe connector, abutting against the sliding ring. This invention is compatible with ordinary end mill mounting bases, facilitates pipe connection operation, and prevents the splashing of debris mixtures.

[0004] However, there are some problems in the use of existing spiral end mills: 1. Currently available spiral end mills lack a proper internal cooling channel, resulting in low overall cooling performance and increased thermal wear; 2. When spiral end mills with internal cooling channels are not in use, dust accumulation can easily occur in the cooling channels, leading to blockages and increasing the difficulty of subsequent cleaning. Utility Model Content

[0005] The purpose of this invention is to provide a spiral end mill with an internal cooling channel to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a spiral end mill with an internal cooling channel, comprising a base, a cutter post, an internal cooling channel assembly disposed inside the guide post, and a protective mounting assembly disposed on the surface of the base;

[0007] The internal cooling channel assembly includes an opening at one end of the blade column surface, an outlet is provided inside the opening, a placement port is provided at one end of the base, and an inlet is provided inside the placement port, forming an internal cooling channel through the inlet and outlet.

[0008] The protective installation assembly includes a first baffle that is fitted inside the placement port. One end of the first baffle is fixedly connected to a post, which is fitted inside the liquid inlet. The first baffle seals the inside of the placement port.

[0009] As a further improvement of this utility model, the internal cooling channel assembly also includes an internal thread formed on the inner surface of the placement port, and the interior of the liquid inlet is connected to the interior of the liquid outlet.

[0010] As a further improvement of this utility model: the bottom of the base is provided with an installation groove, which is located outside the placement opening.

[0011] As a further embodiment of this utility model: the protective installation assembly also includes a handle fixedly connected to one end of the first baffle, the surface of the first baffle is provided with an external thread, and the external thread is engaged with the surface of the internal thread.

[0012] As a further improvement of this utility model: a second baffle is connected inside the opening, and a sealing block is connected to the surface of the second baffle.

[0013] As a further embodiment of this utility model: the sealing block is connected to the inside of the liquid outlet, a rubber ring is connected to the surface of the second baffle, a blade post is fixedly connected to the surface of the base, and a blade edge is opened on the surface of the blade post.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] When in use, this utility model connects its base and the cutter post to form a complete milling cutter structure. A placement port is opened at one end of the base to increase the connection position, and a liquid inlet is opened inside the placement port. A liquid outlet is opened inside the opening at one end of the cutter post. The liquid inlet and liquid outlet are connected to each other, which facilitates the cooling of the entire structure by passing cooling liquid. The internal thread on the inside of the placement port increases the connectivity with the outside. Thus, the spiral milling cutter has a good internal cooling channel when in use, which improves the overall cooling performance and reduces the overall thermal wear.

[0016] When storing the end mill as a whole, the user rotates the handle to install the first baffle inside the placement port, so that the external thread on the surface of the first baffle engages with the internal thread inside the placement port, facilitating the fixation of the first baffle to the inside of the placement port. After the first baffle is installed in the placement port, the insert fixedly connected to one end of the first baffle connects to the inside of the liquid inlet, sealing it off. Its opening is then engaged with the second baffle, which in turn seals the liquid outlet through a sealing block fixedly connected to one side, increasing the sealing performance. Consequently, when the end mill is not in use, the internal cooling channel of the spiral end mill is less prone to dust accumulation, thus reducing the risk of internal blockage and minimizing the inconvenience of subsequent cleaning. Attached Figure Description

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

[0018] Figure 2 This is a schematic diagram of the liquid inlet structure according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the first baffle structure according to an embodiment of the present utility model;

[0020] Figure 4 This is a schematic diagram of the second baffle structure according to an embodiment of the present utility model.

[0021] In the diagram: 1. Base; 2. Blade post; 3. Blade edge; 401. Opening; 402. Liquid outlet; 403. Placement port; 404. Liquid inlet; 405. Mounting groove; 501. Internal thread; 502. First baffle; 503. External thread; 504. Handle; 505. Insert post; 506. Rubber ring; 507. Second baffle; 508. Sealing block. Detailed Implementation

[0022] To facilitate the solution of the problem, this utility model provides a spiral end mill with an internal cooling channel. The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Example 1

[0023] like Figures 1 to 4As shown, this embodiment provides a spiral end mill with an internal cooling channel, including a base 1, a cutter post 2, an internal cooling channel assembly disposed inside the guide post, and a protective mounting assembly disposed on the surface of the base 1. The internal cooling channel assembly includes an opening 401 at one end of the surface of the cutter post 2, with a liquid outlet 402 inside the opening 401. A placement port 403 is opened at one end of the base 1, with a liquid inlet 404 inside the placement port 403. The liquid inlet 404 and the liquid outlet 402 form an internal cooling channel. The protective mounting assembly includes a first baffle 502 that is fitted and connected inside the placement port 403. A pin 505 is fixedly connected to one end of the first baffle 502, and the pin 505 is fitted and connected inside the liquid inlet 404. The first baffle 502 seals the inside of the placement port 403. Example 2

[0024] In addition to all the technical features in Embodiment 1, this embodiment also includes: the internal cooling channel assembly further includes an internal thread 501 formed on the inner surface of the placement port 403; the interior of the liquid inlet 404 communicates with the interior of the liquid outlet 402; the bottom of the base 1 is provided with a mounting groove 405, which is located outside the placement port 403; during cooling, the coolant enters through the liquid inlet 404, passes through the base 1, and is discharged from one end of the cutter post 2 through the liquid outlet 402, thereby cooling the interior of the milling cutter; and the mounting groove 405 increases the connectivity between the base 1 and the outside.

[0025] Furthermore, the protective installation assembly also includes a handle 504 fixedly connected to one end of the first baffle 502. The surface of the first baffle 502 is provided with an external thread 503, which is engaged with the surface of the internal thread 501. The opening 401 is internally connected to a second baffle 507, and the surface of the second baffle 507 is engaged with a sealing block 508. The handle 504 facilitates the use of the first baffle 502 by the user, and the sealing block 508 increases the connectivity with the blade post 2.

[0026] Furthermore, the sealing block 508 is connected to the inside of the liquid outlet 402, a rubber ring 506 is connected to the surface of the second baffle 507, a blade post 2 is fixedly connected to the surface of the base 1, and a blade edge 3 is opened on the surface of the blade post 2. The rubber ring 506 increases the sealing between the second baffle 507 and the inside of the opening 401, reducing the entry of dust.

[0027] Working Principle: During use, the base 1 and the cutter post 2 are connected to form a complete end mill structure. A placement port 403 is provided at one end of the base 1 to increase the connection point. An inlet port 404 is provided inside the placement port 403, and an outlet port 402 is provided at one end of the cutter post 2 through an opening 401. The inlet port 404 and outlet port 402 are interconnected, facilitating the passage of cooling liquid for overall cooling. An internal thread 501 inside the placement port 403 increases the connection to the outside. During cooling, the coolant enters through the inlet port 404, passes through the base 1, and exits from the cutter post 2 through the outlet port 402, cooling the entire end mill. A mounting groove 405 further enhances the connection between the base 1 and the outside. The user rotates the handle 504... The first baffle 502 is installed inside the placement port 403, with the external thread 503 on its surface engaging with the internal thread 501 inside the placement port 403. This facilitates the fixation of the first baffle 502 to the inside of the placement port 403. After the first baffle 502 is installed in the placement port 403, the insert 505 fixedly connected to one end of the first baffle 502 is connected to the inside of the liquid inlet 404 to seal it. Its opening 401 is then engaged with the second baffle 507. The second baffle 507 seals the liquid outlet 402 through a sealing block 508 fixedly connected to one side, increasing the sealing performance. Consequently, when the spiral end mill with internal cooling channel is not in use, the internal cooling channel of the end mill is less prone to dust accumulation, thus reducing the risk of internal blockage and minimizing the inconvenience of subsequent cleaning.

[0028] 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.

[0029] 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 spiral end mill with an internal cooling channel, characterized in that: Includes a base (1), a blade post (2), an internal cooling channel assembly disposed inside the guide post, and a protective mounting assembly disposed on the surface of the base (1); The internal cooling channel assembly includes an opening (401) at one end of the surface of the blade column (2), an outlet (402) is provided inside the opening (401), a placement port (403) is provided at one end of the base (1), and an inlet (404) is provided inside the placement port (403). The internal cooling channel is formed by the inlet (404) and the outlet (402). The protective installation assembly includes a first baffle (502) that is connected to the inside of the placement port (403). One end of the first baffle (502) is fixedly connected to a plug (505). The plug (505) is connected to the inside of the liquid inlet (404). The first baffle (502) seals the inside of the placement port (403).

2. A spiral end mill with an internal cooling channel according to claim 1, characterized in that: The internal cooling channel assembly also includes an internal thread (501) formed on the inner surface of the placement port (403), and the interior of the liquid inlet (404) communicates with the interior of the liquid outlet (402).

3. A spiral end mill with an internal cooling channel according to claim 1, characterized in that: The base (1) has an installation groove (405) at its bottom, and the installation groove (405) is located outside the placement opening (403).

4. A spiral end mill with an internal cooling channel according to claim 1, characterized in that: The protective installation assembly also includes a handle (504) fixedly connected to one end of the first baffle (502), the surface of the first baffle (502) is provided with an external thread (503), and the external thread (503) is engaged with the surface of the internal thread (501).

5. A spiral end mill with an internal cooling channel according to claim 1, characterized in that: The opening (401) is internally connected to a second baffle (507), and the surface of the second baffle (507) is internally connected to a sealing block (508).

6. A spiral end mill with an internal cooling channel according to claim 5, characterized in that: The sealing block (508) is connected to the inside of the liquid outlet (402), the second baffle (507) is connected to the surface of the rubber ring (506), the base (1) is fixedly connected to the surface of the blade column (2), and the blade column (2) is provided with a blade edge (3).

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