I Maleki - M.S. student of mechanical engineering
N. M. Noori - Assistant professor of mechanical engineering
R Madooliat - Assistant professor of mechanical engineering
A Shienejad - M.S. student of mechanical engineering

A two DOF model for simulating chatter vibration in drilling based on gyroscopic effect due to rotating of the tool and effect of the damping characteristics of flank surface is investigated. The equation is simplified to an eigenvalue problem to find the limits of stability. MATLAB DDE Solver is used to define the tool’s motion. This model can determine the hole form. Different parameters can be added further to find more accurate answers. This model has the ability to analyze the effect of different process damping applications. Results had a good agreement with experimental data.

Chatter, Drilling, stability chart