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Experimental-Analytical Method for Determining the Dynamic Coefficients of Turning Tools
Lukasz Nowakowski1, Slawomir Blasiak1, Michal Skrzyniarz1
1Department of Machine Design and Machining, Kielce University of Technology, 25-314 Kielce, Poland.
Materials (Basel, Switzerland)
|February 13, 2025
Summary
This study introduces a method to determine cutting tool dynamic coefficients, like stiffness and damping, for better machining performance. The E-A20Q SDUCL 11 tool shows superior stability and vibration reduction.
Area of Science:
- Mechanical Engineering
- Materials Science
- Manufacturing Processes
Background:
- Dynamic coefficients (stiffness and damping) are crucial for cutting tool performance.
- Optimizing these parameters enhances machining stability and reduces unwanted vibrations.
- Existing methods may not fully capture the dynamic behavior of diverse cutting tool designs.
Purpose of the Study:
- To develop and validate an analytical and experimental method for determining cutting tool dynamic coefficients.
- To enable the design of cutting tools with tailored dynamic characteristics for specific machining applications.
- To compare the dynamic properties of turning tools with different shank materials.
Main Methods:
- An analytical and experimental approach was employed to determine dynamic coefficients.
- Empirical acceleration profiles were aligned with a mathematical model of tool tip oscillations.
- Three turning tool types (steel, carbide-core steel, carbon fibre-core steel shanks) were analyzed.
Main Results:
- The developed method successfully determined stiffness (k) and damping (c) coefficients for cutting tools.
- The E-A20Q SDUCL 11 tool exhibited favorable damping and stiffness properties.
- Results indicate that tool shank material significantly influences dynamic characteristics.
Conclusions:
- The presented method provides a practical approach for identifying dynamic parameters in cutting tools.
- Appropriate selection of stiffness and damping coefficients is key to designing tools for optimal dynamic performance.
- The E-A20Q SDUCL 11 tool is recommended for high-stability, low-vibration machining operations.
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