Angled Damping Mechanism in External Turning Tools for Vibration Control
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Solution Overview
Problem
Current external turning tools with damping mechanisms face challenges in maximizing damping effect while maintaining tool stiffness and cost-efficiency, as the required damping recess compromises tool body stiffness and damping member placement.
Innovation Solution
The external turning tool incorporates a damping mechanism with an elongated damping member positioned at a non-zero angle within the cutting portion, allowing for a larger damping member weight without compromising tool stiffness, and features a replaceable damping member with a high weight-to-volume ratio, integrated into a non-blade-shaped cutting portion with a coolant conveyance assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a damping mechanism with a confined elongated damping member is implemented in the tool body, then the damping effect is maximized, but the tool body stiffness is considerably reduced
Solution Approach 1:
The damping member is repositioned from a longitudinal orientation along the tool body to a transverse orientation within the cutting portion. This dimensional repositioning allows the damping member to be located in a previously unused spatial dimension (the cutting portion rather than the tool body), thereby achieving effective damping while preserving tool body stiffness.
2Reliability
If the damping recess is enlarged to accommodate a heavier damping member, then the damping effect is improved, but the tool body stiffness is compromised
Solution Approach 1:
The damping mechanism is extracted from the tool body structure and relocated to the cutting portion. This separation allows the damping function to be implemented independently without compromising the structural integrity and stiffness of the tool body, as the damping recess is now formed in the cutting portion rather than requiring a large recess in the tool body.
3Reliability
If a large damping member is positioned far from the clamping portion to maximize damping, then the damping effect is enhanced, but the tool structure becomes more complex and less cost-efficient
Solution Approach 1:
The damping mechanism is merged with the cutting portion structure, combining the cutting functionality and damping functionality into a single integrated component. This eliminates the need for separate damping mechanisms and complex structural arrangements, thereby reducing tool structure complexity and improving cost-efficiency while maintaining effective vibration suppression.
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 enhances vibration suppression by optimizing damping member placement and weight distribution, maintaining tool stiffness and cost-efficiency, and improving machining performance by effectively managing machining-induced vibrations.
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
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.