Tool Holder With Segmented Damping Recesses
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Solution Overview
Problem
Existing tool holders are ineffective in minimizing vibration when machining difficult-to-machine materials, leading to surface roughness deterioration and tool damage, as previously proposed anti-vibration techniques are not reliable for practical use.
Innovation Solution
A tool holder design featuring reinforcing parts with accommodating recesses for vibration-damping materials, which are segmented and strategically positioned to enhance stiffness and damp vibrations efficiently, utilizing viscoelastic materials or particulates to convert vibration energy into heat.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If internal anti-vibration members are provided within a tool holder, then vibration should be minimized, but the existing techniques are not effective in minimizing vibration and cannot be relied on for practical use
Solution Approach 1:
The vibration-damping material is divided into multiple segments positioned in accommodating recesses between reinforcing parts. This segmentation allows the damping material to effectively counter vibration forces while maintaining a relatively simple overall structure that can be reliably manufactured and assembled.
2Strength
If a vibration-damping material is accommodated in accommodating recesses between reinforcing parts, then stiffness is increased and vibration is dampened efficiently, but the structure becomes more complex
Solution Approach 1:
The reinforcing parts and vibration-damping material are combined into an integrated vibration-minimizing structure. The reinforcing parts provide stiffness while the accommodated vibration-damping material provides vibration suppression, achieving both goals simultaneously without requiring separate independent components.
Solution Approach 2:
The tool holder employs a composite structure combining rigid reinforcing parts with vibration-damping materials having different mechanical properties. This composite approach allows the structure to simultaneously achieve high stiffness from the reinforcing parts and effective vibration damping from the specialized damping materials.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The tool holder effectively minimizes tool vibration through friction between damping materials and reinforcing parts, achieving a reliable vibration-damping effect with a simple configuration, suitable for practical applications in machining.
Implementation Method 1
The vibration-damping material 5 and the reinforcing parts 4 constitute the vibration-minimizing part
Implementation Method 2
utilizing viscoelastic materials or particulates to convert vibration energy into heat
Data Source
AI summary
To provide a tool holder that is capable of exerting a vibration-minimizing effect in a reliable manner using a simple configuration and that is extremely useful for practical application. A tool holder comprising a vibration-minimizing part for minimizing vibration generated in a tool (1) when the tool (1) is used to perform machining, the vibration-minimizing part being provided, on a distal-end side, with tool-holding means for detachably securing the tool (1) and provided, on a proximal-end side, with a shank part (2) to be mounted on a spindle of a machine tool; wherein a plurality of reinforcing parts (4) extending in an axial direction of the tool holder (3) are provided to a peripheral section of the tool holder (3) in a radial direction; accommodating recesses (6) for accommodating a vibration-damping material (5) are provided between the reinforcing parts (4); the vibration-damping material (5) is accommodated in the accommodating recesses (6); and the vibration-damping material (5) and the reinforcing parts (4) form the vibration-minimizing part.