Effect of contact stiffness on cutter flank friction and wear in milling process considering cutting vibration

In the process of high-efficient milling titanium alloy(Ti6Al4V) workpieces, the ICS (instantaneous contact stiffness) and its distribution between flank face of milling cutter tooth and workpiece change instantaneously due to cutting vibration, which makes tool flank friction and wear status be of instability. In this work, the tool flank micro-convex body stiffness model was developed considering the influence of cutting vibration on instantaneous tool cutting angles. The distribution of the ICS and its effect on instantaneous tool flank friction and wear increment were analyzed. The results showed that the changes in positive pressure on tool flank under cutting vibration was the primary reason for the non-uniform distribution of ICS; the friction and wear increment of different areas on tool flank were in direct proportion to the ICS.