03
2026
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02
Damping anti-seismic tool shank
In the processing of CNC lathes, when the tool extension is long (such as when the length-to-diameter ratio exceeds 4-6 times) or when processing difficult-to-cut materials, vibration (chattering) is prone to occur, resulting in poor surface roughness, accelerated tool wear, and even tool breakage. The damping anti-vibration toolholder is specifically designed to address this issue and is a high-performance cutting tool.
Core structure and working principle
The core of the damping anti-seismic tool shaft lies in its internal "mass damping system", which is mainly composed of the following three parts: 1:
High-density damping unit: Usually made of heavy metals such as tungsten and lead, it has a large mass characteristic and generates reverse inertial force to counteract the vibration energy during vibration.
Elastic support structure: The supporting components are wrapped with rubber, springs or damping oil, allowing the damping body to move relatively and dissipate energy 7.
Sealed cavity and adjustment device: The damping component is encapsulated in the inner cavity of the tool shaft, and some high-end models support damping stiffness adjustment to adapt to different working conditions 1.
(Additional explanation) This principle is similar to the tuned mass damper (TMD) in construction, but it achieves dynamic vibration reduction in miniature cutting tools.
Application industries and typical scenarios
The damping anti-seismic toolholder has been widely used in manufacturing fields with high precision requirements:
Aerospace: Deep hole processing of engine components
Automobile manufacturing: Precision boring of transmission housing and crankshaft holes
Mold processing: Turning of slender core holes
New energy industry: Processing of motor housings and battery tray structural components
