Influence of flank face on the condition of chatter self-excitation during turning
by Alexander M. Gouskov; Mikhail Guskov; Philippe Lorong; Grigory Panovko
International Journal of Machining and Machinability of Materials (IJMMM), Vol. 19, No. 1, 2017

Abstract: This paper addresses a modelling approach for cutting tool and workpiece material interaction with ploughing taken into account. In the proposed model the distributed contact on the flank face is replaced by a concentrated additional cutting edge characterised by two physical parameters and bringing about a new delay term into the dynamical system. It is shown that under monoharmonic excitation of the tool on the direction orthogonal to the cutting velocity, it is possible to isolate the effect of the flank face and observe experimentally its parameters. The influence of the ploughing on the instability boundaries of continuous cutting is investigated. An analytical expression is obtained for the effective linear damping coefficient due to ploughing and depending on the cutting velocity.

Online publication date: Mon, 26-Dec-2016

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