EXPERIMENTAL AND NUMERICAL DYNAMICAL ANALYSIS OF AN END MILLING PROCESS
Résumé
Machine tool vibration on end milling processes plays an important role concerning the cutting characteristics. The correct understanding of this process is important to improve the workpiece surface quality and avoid tool breakage. Chatter and squeal are some undesirable phenomena related to an improper functioning and it can be avoided changing the machining parameters. This article deals with experimental and numerical analysis of the end milling process. Basically, we try to establish a qualitative description of the machining process by considering a nonsmooth two-degree of freedom system. The cutting force is described by a composition of contact/non-contact of the tool and the workpiece. Stick-slip behavior is one of the important nonsmooth phenomenon guided by friction force and the prescribed velocity of the tool holder. Concerning experimental tests, tool displacement and cutting force are measured. Numerical simulations are carried out establishing a qualitative comparison with experimental data.
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