Saw blade milling cutter with reduced resistance and noise

Abstract

The utility model discloses a kind of saw blade milling cutter of drag reduction and noise reduction, including base, the inner wall of base is equipped with connecting hole, and the outer wall of base is fixedly installed with tooth handle part, and the side of tooth handle part is provided with processing mechanism;Processing mechanism includes baffle, and baffle is fixedly installed in the inside of base.The utility model is formed saw blade milling cutter by the cooperation of base, connecting hole, tooth handle part, tool tooth and cutting edge, six groups of storage cavities are separated by baffle in base, both can form 1000-8000Hz vibration band gap to prevent vibration, and can cooperate with tungsten-nickel alloy particles as shock-absorbing filler in storage cavity, high-frequency energy is consumed by collision and friction;Tool tooth and cutting edge adjacent tooth pitch alternately difference and cooperate with tool tooth rake angle along circumferential gradient change, can break cutting impact periodicity to avoid resonance, and cooperate with solid-liquid phase change of phase change damping core, can absorb energy by phase change latent heat, energy is consumed by liquid viscous flow, finally realize drag reduction and noise reduction.

Description

Technical Field

[0001] This utility model relates to the field of saw blade milling cutter technology, specifically a saw blade milling cutter for reducing drag and noise. Background Technology

[0002] A saw blade milling cutter is a high-efficiency cutting tool that combines sawing and milling functions. Its core feature is a ring-shaped metal base with densely distributed cutting teeth around its circumference. High-speed rotation enables precise machining of materials. The cutter is driven by the machine tool spindle to achieve circumferential motion. The cutting teeth generate a shearing action when cutting into the material. Simultaneously, utilizing the multi-edge synergistic effect unique to milling, it can machine deep grooves (with a depth reaching the cutter radius) with precise width and smooth surface, or completely cut off the material. Compared to ordinary saw blades, its milling function makes it more advantageous when machining complex contours.

[0003] Existing patent (publication number: CN217070890U) discloses a saw blade end mill. Using the saw blade end mill proposed in this utility model embodiment, the product can be rough-machined by the second saw tooth section, and then fine-machined by the first and third saw tooth sections, thus achieving the same result using only one saw blade end mill. It effectively improves processing efficiency for both rough and fine machining of products. Furthermore, since there is no need to change tools midway, it avoids problems such as tool change errors and uneven allowance values ​​on the upper and lower parts of the product caused by rough machining, thus ensuring high stability of product quality.

[0004] To address the aforementioned issues, while existing patents have proposed solutions that can maintain processing stability through the cooperation of components such as the first saw tooth, in actual use, the radial runout caused by centrifugal force during high-speed rotation leads to mechanical vibration. This causes the impact frequencies of the workpiece material to overlap, resulting in resonant noise. Furthermore, traditional saw blades lack targeted vibration reduction structures, leading to decreased processing accuracy, shortened tool life, and noise pollution that harms the health of operators. Utility Model Content

[0005] Given that the existing technology has problems such as radial runout caused by centrifugal force during high-speed rotation, which leads to mechanical vibration, and thus superimposed with the impact frequency of the workpiece material to form resonant noise, and that traditional saw blades do not have a targeted vibration reduction structure, resulting in reduced processing accuracy, shortened tool life, and noise pollution that harms the health of operators.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A drag-reducing and noise-reducing saw blade milling cutter includes a base, the inner wall of which has a connecting hole, and a toothed shank is fixedly installed on the outer wall of the base. A processing mechanism is provided on one side of the toothed shank. The processing mechanism includes a partition plate, which is fixedly installed inside the base. A storage cavity is provided on one side of the partition plate inside the base. Shock-absorbing filler is embedded in the bottom of the storage cavity. A blade is fixedly installed on the outer wall of the toothed shank, and a blade is fixedly installed at one end of the blade.

[0007] As a further improvement of this utility model: the toothed shank portion has an internal mounting cavity, and a phase change damping core is embedded inside the mounting cavity.

[0008] As a further improvement of this utility model: the cutting teeth are evenly distributed at equal intervals about the outer wall of the tooth shank, and the tooth shank and the base are an integral structure.

[0009] As a further improvement of this utility model: the top and bottom ends of the substrate are provided with through holes, and a noise reduction mechanism is provided on one side of the through holes.

[0010] As a further improvement of this utility model: the noise reduction mechanism includes a mounting hole, which is opened on the inner wall of the partition, and the interior of the mounting hole is filled with a layer of glass fiber cotton.

[0011] As a further embodiment of this utility model: an open-cell aluminum foam is fixedly installed on the inner wall of the glass fiber cotton layer, and a nanoporous ceramic is fixedly installed on the inner wall of the open-cell aluminum foam, wherein radial holes are opened inside the nanoporous ceramic.

[0012] As a further improvement of this utility model: a honeycomb damping core layer is embedded on one side of the mounting hole inside the partition, and a balance plate is fixedly installed inside the honeycomb damping core layer.

[0013] As a further embodiment of this utility model: the glass fiber cotton layer is bonded to the open-cell aluminum foam, and the open-cell aluminum foam is bonded to the nanoporous ceramic.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model forms a saw blade milling cutter through the cooperation of the base, connecting hole, tooth shank, cutting teeth and cutting edge. The inner partition of the base divides into six sets of storage cavities, which can not only form a vibration band gap of 1000-8000Hz to prevent vibration, but also cooperate with the tungsten nickel alloy particles in the storage cavity as damping filler to consume high-frequency energy through collision and friction. The alternating tooth pitch of the adjacent teeth and the cutting edge, combined with the circumferential gradient change of the cutting tooth rake angle, can break the periodicity of cutting impact to avoid resonance. In addition, with the solid-liquid phase change of the phase change damping core, it can absorb energy through the latent heat of phase change and consume energy through liquid viscous flow, ultimately achieving drag reduction and noise reduction. 2. This utility model, through the combination of mounting holes, glass fiber cotton layer, open-cell foam aluminum, nanoporous ceramic, radial holes, honeycomb damping core layer and balance plate, can guide noise into the sound absorption area efficiently. Under the gradient structure composed of glass fiber cotton layer, open-cell foam aluminum and nanoporous ceramic, it can efficiently absorb noise, greatly broaden the noise reduction range, and enhance the vibration reduction effect by dissipating mid-to-high frequency vibration through honeycomb wall shear deformation. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of a drag-reducing and noise-reducing saw blade end mill; Figure 2 A schematic diagram of the internal structure of a drag-reducing and noise-reducing saw blade end mill. Figure 3 A schematic diagram of the tooth shank structure of a drag-reducing and noise-reducing saw blade end mill; Figure 4 A schematic diagram of the partition structure of a drag-reducing and noise-reducing saw blade end mill; Figure 5 A schematic diagram of a nanoporous ceramic structure for a drag-reducing and noise-reducing saw blade end mill; In the diagram: 1. Matrix; 2. Connecting hole; 3. Tooth shank; 4. Processing mechanism; 401. Partition plate; 402. Storage cavity; 403. Vibration damping filler; 404. Blade; 405. Blade edge; 406. Installation cavity; 407. Phase change damping core; 5. Through hole; 6. Noise reduction mechanism; 601. Mounting hole; 602. Glass fiber cotton layer; 603. Open-cell aluminum foam; 604. Nanoporous ceramic; 605. Radial hole; 606. Honeycomb damping core layer; 607. Balance plate. Detailed Implementation

[0016] To make the above-mentioned objectives, features and advantages of this utility model more readily understood, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0018] Example 1: Please refer to Figures 1-4This is the first embodiment of the present invention. This embodiment provides a drag-reducing and noise-reducing saw blade milling cutter, including a base 1. The inner wall of the base 1 has a connecting hole 2. The outer wall of the base 1 is fixedly installed with a toothed shank 3. A processing mechanism 4 is provided on one side of the toothed shank 3. The processing mechanism 4 includes a partition 401, which is fixedly installed inside the base 1. A storage cavity 402 is provided on one side of the partition 401 inside the base 1. A shock-absorbing filler 403 is embedded in the bottom of the storage cavity 402. A cutting tooth 404 is fixedly installed on the outer wall of the toothed shank 3. A cutting edge 405 is fixedly installed at one end of the cutting tooth 404.

[0019] Specifically, the toothed shank 3 has a mounting cavity 406 inside, and a phase change damping core 407 is embedded inside the mounting cavity 406.

[0020] Furthermore, by placing a phase change damping core 407 inside the cavity 406, the latent heat of phase change can be used to absorb vibration energy during the milling cutter's operation, thus achieving a certain damping effect.

[0021] Specifically, the cutting teeth 404 are evenly distributed at equal intervals on the outer wall of the tooth shank 3, and the tooth shank 3 and the base 1 are an integral structure.

[0022] Furthermore, the tooth shank 3 and the base 1 are an integral structure, which can improve the overall strength of the milling cutter and maintain its service life.

[0023] In use, the saw disc milling cutter is composed of a base 1, connecting holes 2, a toothed shank 3, cutting teeth 404, and cutting edges 405. The interior of the base 1 is divided into six sets of receiving cavities 402 by partitions 401. The partitions 401 are composed of periodic units alternating between TC4 titanium alloy and Al2O3 ceramic, forming a vibration band gap of 1000-8000Hz to prevent vibration transmission in this frequency range. Simultaneously, the receiving cavities 402 are filled with damping filler 403 composed of tungsten-nickel alloy particles, which dissipate high-frequency vibrations through collision and friction between the particles. The dynamic energy is reduced by 5% for the alternating pitch of adjacent teeth 404 and 405. At the same time, the rake angle of the cutting tooth 404 changes in a gradient along the circumference, breaking the periodicity of cutting impact and avoiding resonance. The cavity 406 inside the tooth shank 3 is filled with a phase change damping core 407, which is made of Bi-Sn-In low melting point alloy. It is solid at room temperature and undergoes a solid-liquid phase change when the cutting temperature rises to above 150°C. The vibration energy is absorbed through the latent heat of the phase change, and the viscous flow of the liquid damping core further dissipates the energy, thereby achieving the effect of drag reduction and noise reduction.

[0024] In summary, the partition plate 401 inside the substrate 1, which is composed of alternating TC4 titanium alloy and Al2O3 ceramic, can form a vibration band gap of 1000-8000Hz, directly blocking the transmission of vibration in this frequency band. The tungsten-nickel alloy particle damping filler 403 inside the receiving cavity 402 separated by the partition plate 401 can dissipate high-frequency vibration energy through particle collision and friction. The adjacent tooth pitch difference of the cutting teeth 404 and the cutting edge 405 is 5%, and the rake angle of the cutting teeth 404 changes in a gradient along the circumference, which can break the periodicity of cutting impact and avoid resonance from the root. The Bi-Sn-In low-melting-point alloy phase change damping core 407 inside the tooth shank 3, which is filled in the cavity 406, will undergo a solid-liquid phase change when the cutting temperature rises to above 150℃. It absorbs vibration energy through the latent heat of phase change and further dissipates energy with the help of the viscous flow of the liquid damping core. Under the multiple effects, the cutting resistance and noise are greatly reduced.

[0025] Example 2: Please refer to Figure 2 , Figure 4 and Figure 5 This is the second embodiment of the present utility model.

[0026] The top and bottom of the substrate 1 are provided with through holes 5, and a noise reduction mechanism 6 is provided on one side of the through hole 5.

[0027] Furthermore, sufficient space is reserved through the through hole 5 for storing and placing the noise reduction mechanism 6.

[0028] Specifically, the noise reduction mechanism 6 includes a mounting hole 601, which is opened on the inner wall of the partition 401, and a glass fiber cotton layer 602 is embedded inside the mounting hole 601.

[0029] Furthermore, the glass fiber cotton layer 602 itself has the effect of sound absorption and noise reduction due to its inherent characteristics.

[0030] Specifically, an open-cell aluminum foam 603 is fixedly installed on the inner wall of the glass fiber cotton layer 602, and a nanoporous ceramic 604 is fixedly installed on the inner wall of the open-cell aluminum foam 603. The nanoporous ceramic 604 has radial holes 605 inside.

[0031] Furthermore, by combining open-cell aluminum foam 603 and nanoporous ceramic 604, the noise reduction effect is further improved.

[0032] Specifically, a honeycomb damping core layer 606 is embedded on one side of the mounting hole 601 inside the partition 401, and a balance plate 607 is fixedly installed inside the honeycomb damping core layer 606.

[0033] Furthermore, the honeycomb damping core layer 606 with a regular hexagonal honeycomb structure absorbs mid-to-high frequency vibrations through the shear deformation of the honeycomb wall.

[0034] Specifically, the glass fiber cotton layer 602 is bonded to the open-cell aluminum foam 603, and the open-cell aluminum foam 603 is bonded to the nanoporous ceramic 604.

[0035] Furthermore, the glass fiber cotton layer 602, the open-cell aluminum foam 603, and the nanoporous ceramic 604 are bonded together for easy assembly.

[0036] In use, the through hole 5, mounting hole 601 and radial hole 605 on the substrate 1 are interconnected, providing a dedicated channel for sound wave circulation; the glass fiber cotton layer 602, the open-cell foam aluminum 603 and the nanoporous ceramic 604 are bonded together to form a gradient sound absorption structure, which can efficiently absorb broadband noise in the 200-5000Hz frequency band. At the same time, the partition plate 401 has a honeycomb damping core layer 606 made of Mn-Cu alloy hexagonal honeycomb structure inside, which can absorb mid-to-high frequency vibrations by means of the shear deformation of the honeycomb wall, and can be used with aluminum alloy balance plate 607 to achieve dynamic balance adjustment of the milling cutter.

[0037] In summary, the substrate 1, through the through-hole 5, mounting hole 601, and radial hole 605, provides a directional flow channel for sound waves, guiding noise into the sound-absorbing area efficiently. The glass fiber cotton layer 602, the open-cell aluminum foam 603, and the nanoporous ceramic 604 are bonded together to form a gradient sound-absorbing structure, which can specifically absorb broadband noise of 200-5000Hz, significantly broadening the noise reduction frequency band and improving absorption efficiency. At the same time, the partition 401 contains a hexagonal honeycomb damping core layer 606 made of Mn-Cu alloy, which efficiently dissipates mid-to-high frequency vibration energy through the shear deformation of the honeycomb wall, further enhancing the vibration reduction effect. Combined with the aluminum alloy balance plate 607, the dynamic balance of the milling cutter can be precisely adjusted to ensure stability during high-speed cutting, ultimately achieving multiple gains of broadband noise reduction, efficient vibration reduction, and stable operation.

[0038] It should be understood that numerous specific implementation decisions can be made during the development of any actual implementation method, and in any engineering or design project. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A drag-reducing and noise-reducing saw blade end mill, comprising: The substrate (1) is characterized in that: the inner wall of the substrate (1) is provided with a connecting hole (2), and the outer wall of the substrate (1) is fixedly installed with a toothed part (3), and a processing mechanism (4) is provided on one side of the toothed part (3). The processing mechanism (4) includes a partition (401), which is fixedly installed inside the base (1). A storage cavity (402) is provided on one side of the partition (401) inside the base (1). A shock-absorbing filler (403) is embedded in the bottom of the storage cavity (402). A blade (404) is fixedly installed on the outer wall of the toothed part (3), and a blade (405) is fixedly installed at one end of the blade (404).

2. The saw blade milling cutter according to claim 1, characterized in that: The toothed portion (3) has a mounting cavity (406) inside, and a phase change damping core (407) is embedded inside the mounting cavity (406).

3. The saw blade milling cutter according to claim 1, characterized in that: The cutting teeth (404) are evenly distributed at equal intervals about the outer wall of the tooth shank (3), and the tooth shank (3) and the base (1) are an integral structure.

4. The saw blade milling cutter according to claim 1, characterized in that: The base (1) has through holes (5) at both the top and bottom, and a noise reduction mechanism (6) is provided on one side of the through hole (5).

5. The saw blade milling cutter according to claim 4, characterized in that: The noise reduction mechanism (6) includes a mounting hole (601), which is opened on the inner wall of the partition (401), and the mounting hole (601) is filled with a glass fiber cotton layer (602).

6. The saw blade milling cutter according to claim 5, characterized in that: The inner wall of the glass fiber cotton layer (602) is fixedly installed with open-cell foam aluminum (603), and the inner wall of the open-cell foam aluminum (603) is fixedly installed with nanoporous ceramic (604), and the nanoporous ceramic (604) has radial holes (605) inside.

7. The saw blade end mill according to claim 1, characterized in that: A honeycomb damping core layer (606) is embedded on one side of the mounting hole (601) inside the partition (401), and a balance plate (607) is fixedly installed inside the honeycomb damping core layer (606).

8. The saw blade milling cutter according to claim 5, characterized in that: The glass fiber cotton layer (602) is bonded to the open-cell aluminum foam (603), and the open-cell aluminum foam (603) is bonded to the nanoporous ceramic (604).

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