Authors: Daniel Bachrathy Jokin Munoa Gabor Stepan
Publish Date: 2015/09/15
Volume: 84, Issue: 5-8, Pages: 1295-1302
Abstract
The forced periodic vibrations of milling processes with helical tools are modelled and analysed By means of analytical and numerical techniques the socalled superchart of milling is constructed that includes the conventional stability chart with the stability lobes and also the amplitudes of the stable forced vibrations which is correlated to many surface quality numbers like surface location error surface waviness and surface roughness The existences of trivial and nontrivial appropriate axial immersions are presented for a single degree of freedom mechanical model of the machine tool structure At these appropriate axial immersion parameters if the cutting is stable the surface quality parameters will be also optimal even in those spindle speed domains where the system is near to resonance and the cutting efficiency is high Experiments are performed with a large industrial milling machine using a flexible test rig with an essential flexibility in one direction The calculated and the measured forced vibration signals in the stable domains of the stability chart are in good correlation which validates the simple analytical predictions for the nontrivial appropriate axial immersion parameters
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