Experimental study of machining system: dynamic characterization

TL;DR

This study experimentally characterizes the dynamic behavior of a lathe machining system by identifying its natural frequencies through vibration analysis, comparing experimental results with finite element models to improve cutting process conditions.

Contribution

It introduces a procedure for determining natural frequencies of machine tool components, enhancing dynamic understanding for better machining performance.

Findings

Natural frequencies identified for different system states

Comparison between experimental and finite element model results

Validated method for dynamic characterization of machining systems

Abstract

In the workspace model of machining an experimental procedure is implemented to determine the elastic behaviour of the machining system. In an other work we have proposed a static characterization of the machining system. In this paper a dynamic characterization and vibration analysis have long been used for the detection and identification of machine tool condition. The natural frequencies of the lathe machining system (Ernault HN400 - France) according with three different situations with no cutting process were acquired. The system modal analysis is used to identify the natural frequencies. These ones and these obtained on the spindle numerical model by finite element method are compared. This research is validated by experimental tests being based to measures of the lathe machine tool frequencies domain. Main focus is to identify a procedure to obtain natural frequencies values for machine tool components in order to establish better conditions in the cutting process on the machine tool.