INVESTIGATIONS OF THE EFFECT OF NONUNIFORM INSERT PITCH ON VIBRATION DURING FACE MILLING

In the present work optimal tooth spacing vs spectral redistribution c riteria for face milling has been used as one of the methods for vibra tion control. A special milling cutter with non-uniform pitch has been designed and fabricated and its effect on machine tool vibration is s tudied. The frequency response spectrum of the machine tool is found o ut analytically using Finite Element Programme. The spacing between th e teeth of milling cutters is found out by minimizing the total power of the relative cutter-workpiece vibration. The newly designed cutter is fabricated and tested experimentally to determine its effectiveness when compared with a standard cutter with evenly spaced inserts.