External Turning Tool With Transverse Damping for Stiffness
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Solution Overview
Problem
Existing damped turning tools compromise tool stiffness to maximize damping member weight and distance, leading to reduced structural integrity and machining efficiency.
Innovation Solution
The turning tool incorporates a damping mechanism with a damping member offset from the tool axis, confined within the cutting portion, and oriented at an angle to maximize weight and minimize impact on tool stiffness, featuring a replaceable damping member and elastic components for adjustable damping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a damping mechanism with a heavy damping member is implemented in a turning tool, then vibration damping effect is improved, but tool body stiffness is reduced
Solution Approach 1:
The damping member is repositioned from a longitudinal arrangement (extending along the tool body) to a transverse arrangement (extending perpendicular to the tool axis) within the cutting portion. This dimensional change allows the damping member to achieve sufficient weight and moment of inertia for effective vibration suppression while occupying minimal space that would otherwise contribute to tool body stiffness, thereby resolving the contradiction between damping effectiveness and structural rigidity
2Reliability
If the damping member is positioned far from the clamping portion to maximize damping effect, then vibration suppression is improved, but tool structural integrity is reduced
Solution Approach 1:
The damping member is positioned transversely within the cutting portion, perpendicular to the tool axis, rather than longitudinally extending from the clamping portion. This transverse positioning achieves the necessary distance from the tool axis (and thus from the clamping portion) to create effective damping moment, while the cutting portion's inherent structural design maintains overall tool integrity, resolving the contradiction between damping effectiveness and structural strength
3Reliability
If a large damping member is incorporated to maximize damping weight, then vibration damping is improved, but tool geometry and clearance are compromised
Solution Approach 1:
The damping member is oriented transversely within the cutting portion, utilizing the width dimension of the tool rather than consuming length along the tool axis. This allows a sufficiently large and heavy damping member to be incorporated without compromising the tool's overall length-to-width ratio, maintaining proper tool geometry and clearance requirements while achieving effective vibration damping
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
This configuration achieves effective vibration suppression while maintaining tool stiffness and structural integrity, enhancing machining performance and efficiency.
Implementation Method 1
The damping member interacts with the turning tool via a viscous and/or elastic material
Implementation Method 2
The damping member interacts with the turning tool via a viscous and/or elastic material
Data Source
Figure 1~2
Figure 3~4
Figure 5~7
AI summary
An external turning tool includes an elongated tool body with opposite clamping and cutting portions which define an axial direction therebetween. The cutting portion includes a damping mechanism with an elongated damping member which defines an elongation axis. The elongation axis forms a non-zero damping member angle with the axial direction.