Anti-vibration tool shank with a new damping mechanism

Abstract

The present application relates to the technical field of tool shank, and disclose a new type of anti-vibration tool shank with damping mechanism, including tool shank body, the tool shank body is provided with inner cavity, the inner cavity of tool shank body is provided with silicon-based non-newtonian fluid and particle filler, the inner cavity of tool shank body is threadedly connected with dynamic adjustment screw, by filling silicon-based non-newtonian fluid and tungsten-nickel-iron alloy ball filler in the inner cavity of tool shank body simultaneously, the composite energy dissipation structure of fluid viscous damping and particle collision friction damping is formed. The vibration generated by cutting process is conducted to the inner cavity of tool shank through tool bit, on the one hand, the silicon-based non-newtonian fluid produces strong viscous resistance under the action of vibration shear, and the vibration kinetic energy is converted into heat energy dissipation, on the other hand, the tungsten-nickel-iron alloy ball continuously collides, extrudes and slides under the vibration excitation, further consumes vibration energy. The two damping mechanisms are coupled, which can effectively avoid the problems of machining vibration, tool collapse, tool wear and other problems.

Description

Technical Field

[0001] This invention relates to the technical field of tool holders, specifically to a novel damping mechanism for an anti-vibration tool holder. Background Technology

[0002] During metal cutting, continuous cutting vibrations occur between the tool and the workpiece. Especially in long overhang machining, deep hole boring, thin-walled milling, and cutting of high-temperature alloys and difficult-to-machine materials, fluctuations in cutting force can easily induce resonance and chatter in the tool holder-tool system. Chatter directly causes periodic vibration marks on the workpiece surface and dimensional inaccuracies, while also exacerbating impact wear on the tool edge. In severe cases, it can lead to tool breakage or chipping, restricting the improvement of cutting parameters and significantly reducing machining efficiency and product yield. Therefore, anti-vibration and damping tool holders have become core components for high-precision and high-efficiency cutting. Single hydraulic damping tool holders have a limited vibration reduction mechanism and insufficient energy consumption under conditions of large cutting volumes and strong vibrations, resulting in limited vibration reduction effects. Furthermore, ordinary hydraulic oil has poor temperature resistance; its viscosity decreases significantly after prolonged high-speed cutting and heating, making it prone to leakage, aging, and failure, leading to a rapid decline in vibration reduction performance over long-term use. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a novel damping mechanism for anti-vibration tool holders, which effectively avoids problems such as machining vibration marks, tool breakage, and accelerated tool wear, and solves the problem of rapid decline in vibration reduction performance over long-term use.

[0004] To achieve the above-mentioned goal of effectively avoiding problems such as machining vibration marks, tool breakage, and accelerated tool wear, the present invention provides the following technical solution: a novel damping mechanism for an anti-vibration tool holder, comprising a tool holder body, the tool holder body having an inner cavity, the inner cavity of the tool holder body being filled with a silicon-based non-Newtonian fluid and particulate filler, and a dynamic adjustment screw being threadedly connected to the inner cavity of the tool holder body.

[0005] Preferably, the particulate filler is metal particles or ceramic particles.

[0006] Compared with the prior art, the present invention provides a novel damping mechanism for an anti-vibration tool holder, which has the following beneficial effects: 1. This novel damping mechanism for anti-vibration tool holders simultaneously fills the inner cavity of the tool holder body with a silicon-based non-Newtonian fluid and tungsten-nickel-iron alloy spheres, forming a composite energy-dissipating structure combining fluid viscous damping and particle collision friction damping. When the vibration generated during cutting is transmitted to the tool holder cavity via the tool head, the silicon-based non-Newtonian fluid, under vibration shearing, generates strong viscous resistance, converting vibrational kinetic energy into heat energy for dissipation. Simultaneously, the tungsten-nickel-iron alloy spheres continuously collide, compress, and slide under vibrational excitation, further consuming vibrational energy. The synergistic coupling of these two damping mechanisms significantly reduces the amplitude of tool holder resonance and chatter, suppressing cutting vibration at its source. This overcomes the limitations of traditional single-damping tool holders in terms of limited vibration reduction and the tendency for high-speed, heavy-duty cutting to produce vibrations, effectively preventing machining marks, tool breakage, and accelerated tool wear. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the structure of the present invention.

[0008] In the figure: 1. Tool holder body; 2. Silicon-based non-Newtonian fluid; 3. Particulate filler; 4. Dynamic adjustment screw. Detailed Implementation

[0009] The present invention will be further described in detail below with reference to the accompanying drawings, wherein the same parts are indicated by the same reference numerals. It should be noted that the terms “front”, “rear”, “left”, “right”, “upper” and “lower”, “bottom surface” and “top surface” used in the following description refer to the directions in the drawings, and the terms “inner” and “outer” refer to the directions toward or away from the geometric center of a specific part, respectively.

[0010] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0011] Please see Figure 1 The present invention provides a technical solution: a novel damping mechanism for an anti-vibration tool holder, comprising a tool holder body 1, the tool holder body 1 having an inner cavity, the inner cavity of the tool holder body 1 being provided with a silicon-based non-Newtonian fluid 2 and a particulate filler 3, the inner cavity of the tool holder body 1 being threadedly connected with a dynamic adjustment screw 4, and the particulate filler 3 being metal particles or ceramic particles.

[0012] During use, the cutting vibration energy is transmitted to the tool holder through the tool head, which excites the particle filler 3 to generate collision friction and silicon-based non-Newtonian fluid 2 viscous shear. The dynamic adjustment screw 4 can optimize the particle density in real time by changing the cavity volume to adapt to different cutting conditions.

[0013] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel damping mechanism for an anti-vibration tool holder, comprising a tool holder body (1), characterized in that: The tool holder body (1) is provided with an inner cavity, and a silicon-based non-Newtonian fluid (2) and particulate filler (3) are provided in the inner cavity of the tool holder body (1). A dynamic adjustment screw (4) is threadedly connected to the inner cavity of the tool holder body (1).

2. The anti-vibration tool holder with a novel damping mechanism according to claim 1, characterized in that: The particulate filler (3) is a metal particle or a ceramic particle.

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