Metal Cutting Tool with Tuned Cantilever Vibration Damping
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Solution Overview
Problem
Existing metal cutting tools face challenges with regenerative vibrations, particularly in narrow and deep grooving applications, leading to increased manufacturing costs, higher power consumption, and reduced vibration damping effectiveness, especially when the tool width is 10 mm or below.
Innovation Solution
A cutting tool design that incorporates a cantilever member and end mass within the tool body to create a tuned mass damper, utilizing the tool body material itself for vibration damping, without additional components, allowing for efficient vibration reduction and cost-effective manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high-density mass is added to the cutting tool to suppress vibrations, then vibration damping is improved, but weight increases and manufacturing cost increases
Solution Approach 1:
The vibration damping function is merged with the tool body structure itself. The cantilever member is formed as an integrated part of the tool body from the same material, eliminating the need for separate high-density mass components. This combining approach achieves vibration suppression without adding extra weight or manufacturing complexity.
Solution Approach 2:
The tool body serves its own vibration damping needs through the cantilever member formed from its own material. The structure uses itself as the damping element, eliminating the need for external high-density mass additions. The tool body's own material properties and geometry are leveraged to provide the required vibration suppression.
2Reliability
If high-density mass is added to the cutting tool to suppress vibrations, then vibration damping is improved, but manufacturing cost increases
Solution Approach 1:
The vibration damping function is merged with the tool body structure itself. The cantilever member is formed as an integrated part of the tool body from the same material, eliminating the need for separate high-density mass components. This combining approach achieves vibration suppression without adding extra weight or manufacturing complexity.
Solution Approach 2:
The tool body serves its own vibration damping needs through the cantilever member formed from its own material. The structure uses itself as the damping element, eliminating the need for external high-density mass additions. The tool body's own material properties and geometry are leveraged to provide the required vibration suppression.
3Adaptability or versatility
If the tool width is reduced to 10 mm or below for narrow grooving applications, then adaptability is improved, but vibration damping effectiveness deteriorates
Solution Approach 1:
The cantilever member is strategically positioned and dimensioned to provide localized vibration damping at critical locations within the narrow tool body. The geometry and material properties are optimized specifically for the narrow tool application, creating local structural characteristics that effectively suppress vibrations despite the overall small size of the tool.
Solution Approach 2:
The cantilever member is designed as a dynamic element with specific natural frequencies that counteract the regenerative vibrations in narrow grooving operations. The dynamic characteristics of the cantilever are tuned to provide effective vibration suppression in the constrained geometry of narrow tools, enabling stable operation at reduced tool widths.
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 solution effectively reduces vibrations during metal cutting operations, improving tool stability and extending tool life, while maintaining efficiency and reducing manufacturing costs by utilizing the tool body material for vibration damping.
Implementation Method 1
The cantilever member can oscillate to reduce vibration
Implementation Method 2
The tool body comprises a vibration damping device. The vibration damping device comprises a cantilever member surrounded by the recess, except for a fixed end. The cantilever member comprises a cantilever beam and an end mass
Data Source
Figure 1~2
Figure 3~8
Figure 9~13
AI summary
A cutting tool (1) for metal cutting, comprising a tool body (2), wherein the tool body (2) comprises an insert seat (11), wherein a recess (9) is formed in the tool body (2), wherein tool body (2) comprises vibration damping means (4), wherein the vibration damping means (4) comprises a cantilever member (12), wherein the cantilever member (12) is adjacent to the recess (9), wherein the cantilever member (12) comprises a cantilever beam (5) and an end mass (8), wherein the cantilever member (12) extends between a fixed end (6) and a free end (7), wherein the fixed end (6) is permanently connected to the tool body (2), wherein the cantilever beam (5) extends from the fixed end (6), and wherein the end mass (8) extends from the free end (7).