Vibration damped cutter holder

Abstract

A vibration-damped cutter holder is provided. The vibration-damped cutter holder includes a cutter handle and a cutter holder. The vibration-damped cutter holder features on an area on an outer surface of the cutter handle or the cutter holder and the area is having a first length. A three-dimensional (3D) damping member with a fourth length is disposed on the whole area or a part of the area. The 3D damping member includes a plurality layers of anti-vibration fiber and rein parts. The anti-vibration fiber is composed of at least one fiber and integrally connected with the resin parts.

Description

Technical Field

[0001] This invention relates to a vibration damping tool bar, and more particularly to a vibration damping tool bar with a three-dimensional damping structure that reduces vibration transmission. Prior Technology

[0002] The conventional vibration damping tool rod system is shown in Chinese Patent No. CN117086345A and Figure 1. Its main structural features are: the main body of the tool rod is composed of a multi-layer cylindrical structure, including a base rod core, a damping layer and a constraint layer. The constraint layer (5) is made of carbon fiber cloth, which is symmetrically wound and laid on the damping layer (4) at angles of 0°, 5°, -5° and 0°, and is bonded by structural adhesive. After cooling, it is cured and shaped.

[0003] According to Chinese Patent Announcement No. CN108580995B and its Figure 5, the conventional horizontal assembly type vibration damping end mill is characterized by: a carbon fiber composite material layer (12) embedded in the cavity of a cemented carbide layer through an epoxy rubber adhesive. The damping layer (7) is made of aluminum foam rod structure and placed in the cavity of the carbon fiber composite structure to achieve vibration absorption.

[0004] For prior art regarding boring tools covered with carbon fiber sleeves, please also refer to Chinese Patent Announcement No. CN108097989A and Figure 3. The metal tool holder (1) is located inside the carbon fiber sleeve (3), the outer side of the carbon fiber sleeve (3) is covered with a metal sleeve (5), and a key (4) is inserted between the carbon fiber sleeve (3) and the metal sleeve (5) for fixation.

[0005] As shown in Chinese Patent Announcement No. CN220127621U and Figure 2, in Request 6, it is mentioned that the outer surface of the handle (1) is fixedly connected to the fixing plate (14), and the outer surface of the fixing plate (14) has a fixing groove, and its material is carbon fiber composite plate.

[0006] Claim 1 of Chinese Patent Announcement No. CN107378012B states that the handle (8) and the shank (7) are made of resin-based carbon fiber reinforced plastic. The plastic is mainly composed of a resin matrix and continuous carbon fibers, wherein the resin matrix is ​​selected from bisphenol A type epoxy resin, and the volume ratio of carbon fibers is controlled at 72%.

[0007] Claims 1 and 6 in Chinese Patent Announcement No. CN209303740U state that the inner surface of the carbon fiber composite sheet (3) is in close contact with the outer surface of the tool holder substrate (4), and the surface roughness of both the inner surface of the carbon fiber sheet (3) and the outer surface of the tool holder steel substrate (4) is above Ra=0.5, and the two are in close contact.

[0008] However, the aforementioned cutting tools or tool holders face problems, leading to numerous patents, such as those mentioned in patents CN102574212B, JP2010120108A, JP2005199391A, JPH08-229711A, and KR1019910007130B1. These problems stem from the lack of a three-dimensional damping structure that reduces vibration transmission or attenuation. The novel design in this invention addresses these issues simultaneously, making it highly practical. Summary of the Invention

[0009] The purpose of this invention is to provide a vibration damping tool bar, wherein the inner and / or outer surfaces of the vibration damping tool bar have a three-dimensional damping structure that continuously reduces vibration and prevents heat accumulation.

[0010] A vibration-damping tool holder that achieves the above-mentioned objective comprises: an outer surface on the tool holder or tool shank, and a hollow inner surface therein, characterized in that:

[0011] On the inner surface or the outer surface, a three-dimensional damping structure is provided to reduce vibration transmission, and the length of the three-dimensional damping structure does not exceed the length of the inner surface and / or the outer surface. The three-dimensional damping structure contains multiple layers of anti-vibration fibers and resin components. The anti-vibration fibers are selected from any one or more of liquid crystal polymer fibers, aromatic polyamide fibers, carbon fibers, boron fibers, basalt fibers, and glass fibers, arranged in 3 to 15 layers, and combined with the resin components to form an integrated shape. Simple Explanation of the Diagram

[0012] Figure 1 is a perspective view of the vibration-damping tool holder of the present invention, showing the area of ​​the outer surface of the tool holder; Figure 2 is a perspective view of the vibration damping tool holder, showing the area between the tool holder and the outer surface of the tool holder; Figure 3 is an enlarged cross-sectional view of the three-dimensional damping structure that completely covers the outer surface of the vibration damping tool bar; Figure 4 is a partially enlarged schematic diagram of part E in Figure 3; Figure 5 is an enlarged cross-sectional view of the outer surface of the vibration damping tool bar, which is equipped with a three-dimensional damping structure. Figure 6 is a partially enlarged schematic diagram of part F in Figure 5; Figure 7 is a plan view unfolded from point AB to point CD after combining Figure 6 with Figure 1 or Figure 2, showing the three-dimensional damping structure configured along the axial direction; Figure 8 is a plan view of Figure 6 combined with Figure 1 or Figure 2, unfolded from point AB to point CD, showing two three-dimensional damping structures arranged vertically and axially. Figure 9 is a plan view unfolded from point AB to point CD after combining Figure 6 with Figure 1 or Figure 2. It shows another three-dimensional damping structure with three-dimensional damping structures arranged vertically and interspersed. Figure 10 is a plan view unfolded from point AB to point CD after combining Figure 6 with Figure 1 or Figure 2, showing the two three-dimensional damping structures arranged vertically and interspersed with two other three-dimensional damping structures; Figure 11 is a plan view unfolded from point AB to point CD after combining Figure 6 with Figure 1 or Figure 2, showing the first non-axial configuration of the three-dimensional damping structure; Figure 12 is a plan view unfolded from point AB to point CD after combining Figure 6 with Figure 1 or Figure 2, showing the second non-axial configuration of the three-dimensional damping structure; Figure 13 shows a cross-sectional enlarged view of the long groove on the outer surface of the vibration damping tool bar, in which a three-dimensional damping structure is arranged; Figure 14 is a partially enlarged schematic diagram of part G in Figure 13, showing that the top surface of the three-dimensional damping structure is higher than the outer surface; Figure 15 is a partially enlarged schematic diagram of part G in Figure 13, showing that the top surface height of the three-dimensional damping structure is equal to that of the outer surface; Figure 16 is a plan view of Figure 13 after being combined with Figure 1 or Figure 2, unfolded from point AB to point CD, showing that the long groove is set along the axial direction; Figure 17 is a plan view unfolded from point AB to point CD after combining Figure 13 with Figure 1 or Figure 2, showing two long grooves arranged vertically along the axial direction; Figure 18 is a plan view unfolded from point AB to point CD after combining Figure 13 with Figure 1 or Figure 2, showing another long groove with the long grooves arranged vertically and interspersed. Figure 19 is a plan view unfolded from point AB to point CD after combining Figure 13 with Figure 1 or Figure 2, showing the two long grooves arranged vertically and interspersed with two other long grooves; Figure 20 is a plan view of Figure 13 after being combined with Figure 1 or Figure 2, unfolded from point AB to point CD, showing the first non-axial arrangement of the long groove; Figure 21 is a plan view of the elongated groove from point AB to point CD after combining Figure 13 with Figure 1 or Figure 2, showing the second non-axial arrangement of the long groove; Figure 22 is a perspective view of the vibration-damping tool bar of the present invention, showing the three-dimensional damping structure of the entire area of ​​the inner surface of the tool bar; Figure 23 is a perspective view of the vibration-damping tool holder, showing the three-dimensional damping structure of a portion of the inner surface of the tool holder and the tool holder; Figure 24 is an enlarged cross-sectional view of the inner surface of the vibration damping tool bar completely covered by the three-dimensional damping structure; Figure 25 is a partially enlarged schematic diagram of part H in Figure 24; Figure 26 is an enlarged cross-sectional view of the inner surface of the vibration damping tool bar, which is equipped with a three-dimensional damping structure; Figure 27 is a partially enlarged schematic diagram of part J in Figure 26; Figure 28 is a cross-sectional schematic diagram of the three-dimensional damping structure of the vibration damping tool bar, which consists of an upper damping layer and a lower damping layer; Figure 29 is a partially enlarged schematic diagram of part K in Figure 28, showing the separation of the upper damping stack from the lower damping stack; Figure 30 is a partially enlarged schematic diagram of part K in Figure 28; Figure 31 is an enlarged cross-sectional view of the vibration damping tool bar with a three-dimensional damping structure on its inner and outer surfaces; Figure 32 is a partially enlarged schematic diagram of part L in Figure 31; Figure 33 is an enlarged cross-sectional view of the outer surface and part of the inner surface of the vibration damping tool bar, which are provided with a three-dimensional damping structure; Figure 34 is a partially enlarged schematic diagram of part M in Figure 33; Figure 35 is an enlarged cross-sectional view of part of the outer and inner surfaces of the vibration damping tool bar, which are provided with a three-dimensional damping structure; Figure 36 is a partially enlarged schematic diagram of part N in Figure 35; Figure 37 is an enlarged cross-sectional view of the inner and outer surfaces of the vibration damping tool bar, which are provided with a three-dimensional damping structure; and Figure 38 is a partially enlarged schematic diagram of part P in Figure 37. Implementation

[0013] In the accompanying drawings, the thickness of the compositions, fibers, laminates, etc., is shown enlarged for clarity. Throughout the specification, the same reference numerals denote the same materials. It should be understood that when materials such as compositions, fibers, laminates, etc., are described as being "on" or "attached" to another material, they may be directly on or directly attached to the other material, or an intermediate layer material may also be present. Conversely, when a material is described as being "directly on" or "directly attached" to another material, an intermediate layer material is not included. The "attachment" referred to in this invention can be either physical or chemical. In the specification, the uncured resin component 4 impregnated in the vibration-damping fiber 3 is referred to as prepreg; and the uncured three-dimensional damping structure 2 is referred to as the prepreg laminate.

[0014] Please refer to Figures 1 and 2. The vibration damping tool holder 1 provided by the present invention has a tool holder 11, a tool holder 12 and a cutting tool 13. The tool holder 11 is disposed at the top of the tool holder 12. The bottom end of the tool holder 12 can be equipped with various cutting tools 13 according to different cutting purposes or functions, including end mills, turning tools, parting tools, engraving cutters, etc.

[0015] In a first embodiment of the present invention, the tool holder 12 or the area on the outer surface 14 of the tool shank 11 has a first length L1, and a three-dimensional damping structure 2 with a fourth length L4 is disposed over the entire area of ​​the outer surface 14 (as shown in Figures 1 to 4); or a patterned three-dimensional damping structure 2 with the fourth length L4 is disposed over a portion of the outer surface 14, and arranged axially or non-axially along the vibration-damping tool holder 1 (as shown in Figures 1, 2, 5, and 6), and the first length L1 is greater than or equal to the fourth length L4. The three-dimensional damping structure 2 serves as a vibration suppression device for the vibration-damping tool holder 1, and this three-dimensional damping structure 2 is in close contact with at least one surface of the vibration-damping tool holder 1 to ensure structural stability and vibration reduction efficiency.

[0016] In a second embodiment of the invention, based on the first embodiment described above, at least one elongated groove 15 is provided on the region of the outer surface 14 where the tool bar 12 or the tool holder 11 is located (as shown in Figures 13 to 16). The elongated groove 15 has a predetermined depth and is arranged along the axial or non-axial direction of the vibration-damping tool bar 1 with a second length L2. The three-dimensional damping structure 2 with a fourth length L4 is disposed within the elongated groove 15, wherein the second length L2 is greater than or equal to the fourth length L4.

[0017] The third embodiment of the present invention is based on the first embodiment described above, wherein the vibration damping blade 1 includes an inner surface 16 of a hollow cylinder. The inner surface 16 has a third length L3 in the axial direction, and a three-dimensional damping structure 2 of the fourth length L4 is provided in all (Figs. 22, 24 and 25) or part (Figs. 23, 26 and 27) of the inner surface 16, wherein the third length L3 is greater than or equal to the fourth length L4.

[0018] The fourth embodiment of the present invention is a combination of the first and third embodiments described above. As shown in Figures 31 to 38, the blade 12 or the handle 11 on the vibration damping blade 1 has an outer surface 14, and the hollow interior of the vibration damping blade 1 has an inner surface 16. The outer surface 14 has a first length L1 in the axial direction, and the inner surface 16 has a third length L3 in the axial direction. A three-dimensional damping structure 2 for reducing vibration transmission is provided in all or part of the outer surface 14 and in all or part of the inner surface 16, and the length of the three-dimensional damping structure 2 does not exceed the lengths of the outer surface 14 and the inner surface 16.

[0019] The three-dimensional damping structure 2 covers most of at least one surface of the vibration-damping tool holder 1, effectively reducing cutting errors caused by vibration during the cutting process. Furthermore, the three-dimensional damping structure 2 shortens working time, improves on-site cutting efficiency, and achieves high-precision cutting results. The three-dimensional damping structure 2 contains multiple layers of a sandwich-like structure formed by combining at least one or more continuous anti-vibration fibers 3 with a resin component 4. This structure can freely extend into three-dimensional space as needed while maintaining a solid form and stably maintaining close contact with the surface of the vibration-damping tool holder 1. As shown in Figure 29, the outer surface of the three-dimensional damping structure 2 is the surface layer 24, and the opposite surface is the bonding surface 23. The three-dimensional damping structure 2 contains multiple layers of continuous anti-vibration fibers 3, with cured resin components 4 between the fibers. This gives the three-dimensional damping structure 2 incompressibility, non-extensibility, and a low coefficient of thermal expansion (CTE), effectively suppressing low-frequency, mid-frequency, and high-frequency vibrations, exhibiting excellent damping performance.

[0020] Figures 5 and 6 show another variation of the first type, where the tool holder 12 or the tool shank 11 has a first length L1 on the outer surface 14, partially covered by three-dimensional damping structures 2 arranged axially (as shown in Figures 7 to 10) or non-axially (as shown in Figures 11 to 12). Multiple three-dimensional damping structures 2 with widths are arranged along the circumference of the vibration-damping tool holder 1, and these three-dimensional damping structures 2 can be configured to be arranged in parallel at uniform or non-uniform intervals D1. Furthermore, as shown in Figures 8 to 10, three-dimensional damping structures 2 with appropriate lengths, widths, and corresponding dimensions, contours, or shapes can be provided at intervals D2 on the circumference of the elongated vibration-damping tool holder 1, and their proportions on the outer surface 14 can be adjusted as needed. This variation includes two different shapes (sizes) of the three-dimensional damping structures 2, respectively configured in two different locations. Each of these three-dimensional damping structures 2, regardless of its shape (size), can operate independently to handle vibrations of different frequencies and intensities, thereby achieving the effects of vibration reduction and damping.

[0021] Please refer to Figures 1, 2, and 13 to 15 for a second embodiment of the vibration damping tool bar 1 provided by the present invention. The vibration damping tool bar 1 has a tool holder 11, a tool bar 12, and a cutting tool 13. The outer surface 14 of the tool bar 12 or the tool holder 11 includes an elongated groove 15 recessed at least one predetermined depth and a second length L2. Its characteristic is that:

[0022] The elongated groove 15 is arranged along the axial direction as shown in Figures 16 to 19 or non-axially as shown in Figures 20 to 21, and multiple elongated grooves 15 are arranged along the circumferential direction of the vibration damping tool bar 1. These elongated grooves 15 can be configured to be arranged in parallel with uniform or non-uniform spacing D1, and can include structures of at least two different sizes, profiles and / or shapes, distributed in two or more different locations. In addition, as shown in Figures 17 to 19, an appropriate spacing D1 or distance D2 is maintained between two adjacent elongated grooves 15 (in the parallel axial direction and the circumferential direction, respectively).

[0023] The three-dimensional damping structure 2 is provided within the elongated groove 15. By applying pressure layer by layer at a specific temperature, the resin component 4 is deformed and cured between the anti-vibration fiber 3 and the elongated groove 15, thereby firmly fixing the three-dimensional damping structure 2 within the elongated groove 15 via the joint surface 23. The surface layer 24 of the cured three-dimensional damping structure 2 can be higher than or equal to the outer surface 14. In Figure 14, the surface layer 24 of the three-dimensional damping structure 2 is higher than the outer surface 14; while in Figure 15, the surface layer 24 is equal to the outer surface 14.

[0024] Please refer to Figures 22 to 27. The third embodiment of the vibration-damping tool holder 1 provided by the present invention includes a tool holder 11, a tool bar 12, and a cutting tool 13, and internally contains an inner surface 16 of a hollow cylinder. This inner surface 16 has a third length L3 in the axial direction. Its characteristic is that:

[0025] As shown in Figures 22, 24, and 25, the inner surface 16 may be entirely provided with the three-dimensional damping structure 2; or as shown in Figures 23, 26, and 27, it may be provided with three-dimensional damping structures 2 arranged with the same shape (size) or at least two different shapes (sizes). The three-dimensional damping structure 2 contains multiple layers of continuous anti-vibration fibers 3. By applying pressure layer by layer, the resin component 4 is deformed and cured between the anti-vibration fibers 3 and the inner surface 16. The three-dimensional damping structure 2 is firmly fixed to the roughened surface of the inner surface 16 with the joint surface 23, or cured according to the axial or non-axial direction of the inner surface 16, thereby realizing the layer-by-layer stacking of the anti-vibration fibers 3.

[0026] Because the metal-material damping tool holder 1 has a low vibration reduction response and is easily used as a vibration transmission medium, each three-dimensional damping structure 2 can be considered a complete shock absorbing body. Through the inner and outer surfaces of the damping tool holder 1, it effectively absorbs low-frequency, mid-frequency, and high-frequency vibrations generated during tool operation. This invention utilizes the resin component 4 and the stacked anti-vibration fibers 3 to quickly form various shapes of the three-dimensional damping structure 2 on the outer surface 14 and the inner surface 16, and to firmly fix it in appropriate positions to meet the complex requirements of different damping tool holders 1; simultaneously, it achieves a stable connection of the damping tool holder 1 in all or part of the area of ​​the outer surface 14 and the inner surface 16.

[0027] In some embodiments of the present invention, the anti-vibration fiber 3 may be selected from materials or properties in the group consisting of: liquid crystal polymer (LCP) fibers, aromatic polyamide fibers, carbon fibers, boron fibers, basalt fibers, glass fibers, or combinations thereof. This results in the anti-vibration fiber 3 comprising multiple layers of continuous fibers, with at least two fiber materials of different compositions or properties arranged alternately to achieve the desired size and shape. In this embodiment, the length direction of at least one layer of anti-vibration fiber 3 is parallel or non-parallel to the length direction of another layer of anti-vibration fiber 3. Simultaneously, the length direction of the anti-vibration fiber 3 is the same as the direction of the first length L1, as long as there are no specific limitations on volume and weight.

[0028] Among these, when constructing a multilayer continuous anti-vibration fiber 3 with two or more layers, multilayer liquid crystal polymer fiber is the best choice in terms of single properties. Liquid crystal polymer fiber is presented in a multilayer structure and is made from liquid crystal polymers (LCPs). Types of liquid crystal polymers include polyarylates, fully aromatic polyesters, semi-rigid aromatic polyesters, and polyesteramides. In addition, liquid crystal polymers can also be copolymers formed from the following raw materials: aromatic or aliphatic dihydroxy compounds; aromatic or aliphatic dicarboxylic acids; aromatic hydroxycarboxylic acids; or aromatic diamines, aromatic hydroxyamines, or aromatic aminocarboxylic acids.

[0029] The vibration damping performance of the damping tool bar 1 can be collected using the logarithmic decay rate (amplitude decay rate) of an accelerometer. The logarithmic decay rate is usually directly related to the amplitude and frequency.

[0030] According to the present invention, when the vibration-damping tool bar 1 made of alloy steel is not equipped with the three-dimensional damping structure 2, the three average amplitudes of the cutting tool 13 are measured by striking the cutting tool 13 with an impact hammer and performing a natural frequency test, with a three-dimensional average amplitude of 1184G. When the inner surface 16 of the vibration-damping tool bar 1 is equipped with the three-dimensional damping structure 2 with a thickness of 2mm or 3mm, under the same test conditions, the three average amplitudes of the cutting tool 13 are reduced to 863G and 222G respectively, exhibiting excellent vibration reduction effect. Here, the unit "G" is used to represent the acceleration value of the vibration intensity.

[0031] In this invention, if the tungsten carbide vibration damping tool holder 1 does not have the three-dimensional damping structure 2 configured on its outer surface 14, the average amplitude of the three vibrations measured in a natural frequency test when the cutting tool 13 is struck with an impact hammer is 1624G. However, when the three-dimensional damping structure 2 with a thickness of 0.5mm, 1mm, or 2mm is configured on the outer surface 14 of the vibration damping tool holder 1, under the same test conditions, the average amplitude of the three vibrations at the cutting tool 13 position is significantly reduced to 636G, 368G, and 248G, respectively, fully demonstrating its vibration damping performance.

[0032] The vibration-damping fiber 3 is composed of unidirectional or unidirectional continuous fibers and is disposed within the three-dimensional damping structure 2. The vibration-damping fiber 3 is selected from one or more of liquid crystal polymer fibers, aromatic polyamide fibers, carbon fibers, boron fibers, basalt fibers, and glass fibers. The fiber arrangement is a structure of 3 to 15 layers, with a thickness ranging from 0.3 mm to 1.2 mm, and is configured in a substantially continuous manner along its entire length or width to form an integrated structure.

[0033] The three-dimensional damping structure 2 is formed by impregnating or coating the anti-vibration fiber 3 with the resin component 4 onto the body of at least one material in the above group, while simultaneously penetrating into the interior of the anti-vibration fiber 3 to form a prepreg. Then, a prepreg stack is formed by stacking multiple prepregs and curing them on the roughened surface of the outer surface 14, the elongated groove 15, or the inner surface 16 to achieve the layer-by-layer stacking of the anti-vibration fiber 3.

[0034] In detail, the three-dimensional damping structure 2 is integrally formed in a sandwich shape, with an outer layer sandwiching an inner layer. These layers are all composed of unidirectional or unidirectional continuous fibers, forming the anti-vibration fiber 3. The resin component 4 is bonded to the entire inner and outer areas of the anti-vibration fiber 3. The resin component 4 can be a thermosetting resin, thermoplastic resin, or a biodegradable epoxy resin composition, and is adhered to the inner and surface areas of the anti-vibration fiber 3.

[0035] In this invention, the resin component 4 is selected from any of the thermosetting resin, thermoplastic resin, or biodegradable epoxy resin compositions, and is used together with the anti-vibration fiber 3. By including the resin component 4 within the internal and surface regions of the anti-vibration fiber 3, the bonding strength between the three-dimensional damping structure 2 and the vibration-damping blade 1 can be improved, while reducing the warping of the edges of the three-dimensional damping structure 2. The anti-vibration fiber 3 in the three-dimensional damping structure 2, whether unidirectional or unidirectional continuous fiber, preferably has a content of 50-80% by weight. From the perspective of the formability of the resin component 4, the ideal content of the anti-vibration fiber 3 is 50-60% by weight, more preferably 60-70% by weight, and even more preferably 70-80% by weight.

[0036] According to another embodiment, the three-dimensional damping structure 2 completely covers the circumference of the outer surface 14, and the outer surface 14 is provided with the three-dimensional damping structure 2 having a height difference H. As shown in Figures 28 to 30, this structure comprises an upper damping stack 21 and a lower damping stack 22. The upper damping stack 21 is joined to a portion of the surface layer 24 of the lower damping stack 22 by the joint surface 23. The height difference H between the lower damping stack 22 and the surface layer 24 of the upper damping stack 21 is less than 0 to 3 mm, so that the upper damping stack 21 presents as a curved surface of the vibration damping bar 1 in the entire circumferential direction. The length of the lower damping stack 22 is the fourth length L4, and the length of the upper damping stack 21 is a fifth length L5, which is less than the fourth length L4.

[0037] The height difference H is formed between the surface layer 24 of the lower damping stack 22 and the upper damping stack 21.

[0038] In detail, at least a portion of the surface layer 24 of the lower damping stack 22, along the axial or non-axial direction of the damping bar 1, is provided with a concave structure 25 between the two upper damping stacks 21, extending from the surface layer 24 of the upper damping stack 21 to the surface layer 24 of the lower damping stack 22, and forming the height difference H between them.

[0039] Specifically, the lower damping stack 22 is constructed with the fourth length L4 and the first thickness, and forms a first shape (first sandwich shape) on the outer surface 14. According to an embodiment, a plurality of the upper damping stacks 21 are arranged axially or non-axially, forming a second shape (second sandwich shape) with the fifth length L5 and the second thickness, and are spaced apart from each other by a predetermined distance D3. The first thickness can be greater than, equal to, or less than the second thickness. And the first thickness of at least one upper damping stack 21 and the first thickness of another adjacent upper damping stack 21 can be greater than, equal to, or less than each other.

[0040] According to an embodiment, the resin component 4 impregnated inside the anti-vibration fiber 3 is a thermosetting resin, wherein the thermosetting resin is at least one selected from the group consisting of epoxy resin, phenolic resin, ethylene oxide resin and unsaturated polyester resin.

[0041] According to another embodiment, the resin component 4 impregnated inside the anti-vibration fiber 3 is a thermoplastic resin, which is at least one selected from the group consisting of polyethylene (PE), polypropylene (PP), acrylonitrile-butadiene-styrene copolymer (ABS) and ethylene vinyl acetate copolymer (EVA).

[0042] In another variation, the resin component 4 impregnated within the anti-vibration fiber 3 is the biodegradable epoxy resin composition. Specifically, the biodegradable epoxy resin composition comprises 50-80% epoxy resin composition and 20-50% curing agent by weight percentage. A carbonate additive is added to the epoxy resin composition. This carbonate additive is a micron-sized solid particle that always exists in powder form in the curing agent of the biodegradable epoxy resin composition and undergoes an alcoholysis reaction upon contact with an alkaline solution, causing swelling.

[0043] Specifically, the prepreg stack is subjected to a first hot pressing process while using molding shrinkage technology to encase it or using an expansion sleeve to expand it. This process involves applying a first pressure to the prepreg stack at a first temperature to solidify it on the outer surface 14, the elongated groove 15, or the inner surface 16.

[0044] In conclusion, this invention is not only innovative in its spatial form, but also enhances the aforementioned functions compared to conventional items. It fully meets the statutory requirements for novelty and inventiveness for an invention patent. Therefore, this application is filed in accordance with the law, and we respectfully request your bureau to approve this invention patent application to encourage invention. We are deeply grateful for your assistance.

[0045] 1: Vibration-damping tool holder 11: Handle 12: Tool holder 13: Cutting tool 14: Outer surface 15: Long groove 16: Inner surface 2: Three-dimensional damping structure 21: Upper damping stack 22: Lower layer damping stack 23: Joint surface 24: Surface level 25: Concave structure 3: Anti-vibration fiber 4: Resin components L1: First Length L2: Second Length L3: Third Length L4: Fourth Length L5: Fifth Length D1: Spacing D2: Distance D3: Pre-determined distance H: Difference in elevation

Claims

1. A vibration damping tool holder, having an outer surface (14) on a tool holder (11) and a tool holder (12), and having a hollow inner surface (16) inside, characterized in that: a three-dimensional damping structure (2) for reducing vibration transmission is provided on the inner surface (16) or the inner surface (16) and the outer surface (14), and the length of the three-dimensional damping structure (2) does not exceed the length of the inner surface (16) and / or the outer surface (14), the three-dimensional damping structure (2) contains multiple layers of anti-vibration fibers (3) and resin components (4) infiltrated into the anti-vibration fibers (3), the anti-vibration fibers (3) are selected from any one or two or more of liquid crystal polymer fibers, aromatic polyamide fibers, boron fibers, basalt fibers, and glass fibers, arranged in 3 to 15 layers, and combined with the resin components (4) to form an integrated body.

2. A vibration damping tool holder, comprising a cylindrical tool holder (12) or the tool holder (12) and the tool shank (11) having an outer surface (14), characterized in that: the outer surface (14) is provided with a three-dimensional damping structure (2) for reducing vibration transmission, and the length of the three-dimensional damping structure (2) does not exceed the length of the outer surface (14), the three-dimensional damping structure (2) contains multiple layers of anti-vibration fibers (3) and resin components (4) infiltrated into the anti-vibration fibers (3), the anti-vibration fibers (3) are selected from any one or two or more of liquid crystal polymer fibers, aromatic polyamide fibers, boron fibers, basalt fibers, and glass fibers, arranged in 3 to 15 layers, and combined with the resin components (4) to form an integrated body.

3. A vibration damping tool holder, comprising a cylindrical tool holder (11) and a tool holder (12), characterized in that: at least one long groove (15) is provided on the outer surface (14) of the tool holder (12) and the outer surface (14) of the tool holder (12) and the tool holder (11), having a predetermined depth and arranged axially or non-axially with a second length (L2), a three-dimensional damping structure (2) of a fourth length (L4) is provided in the long groove (15), and the second length (L2) is greater than or equal to the fourth length (L4), the three-dimensional damping structure (2) contains multiple layers of anti-vibration fibers (3) and resin components (4) infiltrated into the anti-vibration fibers (3), the anti-vibration fibers (3) are selected from any one or more of liquid crystal polymer fibers, aromatic polyamide fibers, boron fibers, basalt fibers, and glass fibers, arranged in 3 to 15 layers, and combined with the resin components (4) to form an integrated body.

4. The vibration damping tool bar as described in claim 1, 2, or 3, wherein, The resin component (4) incorporated into the interior and surface region of the anti-vibration fiber (3) is a thermosetting resin, which is at least one selected from the group consisting of epoxy resin, phenolic resin, epoxy ethylene resin and unsaturated polyester resin.

5. The vibration damping tool bar as described in claim 1, 2, or 3, wherein, The resin component (4) incorporated into the interior and surface region of the anti-vibration fiber (3) is a thermoplastic resin, which is at least one selected from the group consisting of polyethylene, polypropylene, acrylonitrile-butadiene-styrene copolymer and ethylene vinyl acetate copolymer.

6. The vibration damping tool bar as described in claim 1, 2, or 3, wherein, The vibration-damping fiber 3 is composed of unidirectional fibers or unidirectional continuous fibers, and the length direction of at least one layer of vibration-damping fiber (3) is parallel or non-parallel to the length direction of the adjacent layer of vibration-damping fiber (3).

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