Abstract
This study investigates how the stability of the turning process changes when the tangential component of the cutting force is also taken into account as a compressive force acting on the cutting tool. The tool is modelled by a cantilever beam; the mathematical model is based on the Euler-Bernoulli beam theory. The effect of compression appears through the lateral stiffness of the tool. Two cases are separated in connection with the compressive force: constant and varying forces. Since compression reduces the natural frequency of the cutting tool, this also affects the stable region of the turning operation.
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