Simulating the dynamics of vibration drilling featuring chip control driven by peak-to-peak vibration displacement
Authors: Pleshcheev I.I., Voronov S.A., Ivanov I.I.
Published in issue: #11(95)/2019
DOI: 10.18698/2308-6033-2019-11-1931
Category: Mechanics | Chapter: Dynamics, Strength of Machines, Instruments, and Equipment
Chip control is one of the most important problems in deep hole machining. A special self-vibratory drilling head may be used to implement chip control. However, chip control via a self-vibratory head is only possible for specific manufacturing parameters, which limits the use of this method. This paper presents an algorithm for adaptive control of vibration drilling dynamics intended to facilitate chip control and driven by peak-to-peak vibration displacement. We provide a mathematical model of drilling using a self-vibratory head, taking into account the facts that the cutting force is a non-linear function of the chip thickness and that there is additional non-linearity introduced when the drill is exiting the material. In order to validate the efficiency of the algorithm proposed, we performed numerical simulations for a wide range of variable processing parameters. The simulation results obtained confirm that the strategy proposed is efficient for chip control.
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