Metal cutting processes involve interaction of the machining forces with the work piece. In this processes the vibrations are induced in machine tools which have adverse effect on tool life, surface integrity and occurrence of undesirable chatter phenomenon. In order to enhance the quality of surface of the work piece after machining and avoid chatter marks and breakage of tool, this paper gives a unique method to detect and suppress the chatter effect on the work piece finis. This method incorporates the features of Magneto-Rheological fluid which utilizes the input current as source to modify the magnetic field to enhance the variable stiffness and produce damping effect to control the end mill cutter vibration and suppress the chatter. The variables stiffness and damping can be maintained by the damper input current to attain desired magnetic field in the MR damper. In this work the chatter detection is observed by means of a remarkable Bingham number. The different machining parameters are considered in the experimental work and the results are compared with and without the magneto rheological damping effect and the results shows the enhancement of surface quality and reduced the chatter marks on the work piece by producing Magneto- Rheological damping to the end mill cutter during machining.