Development of methods for cutting force components determination when milling aviation materials

Abstract

The purpose of the paper is to develop an experimental calculation methodology for determining cutting force components when milling hard-to-cut materials: VT23 titanium alloy, 40HN2MA structural alloyed steel and V95 high-strength aluminum alloy in different cutting conditions. An experimental evaluation of the cutting force components is carried out when milling with carbide inserts of different geometry in different technological conditions using industrial equipment, tools and tooling. The paper proposes a calculation methodology for experimental values approximation as exponential functions based on the determination of instantaneous values of the cut cross section depending on the angle of tool penetration. The presented methodology demonstrates good convergence with experimental data. Some features of cutting force dynamics when milling the materials under investigation have been revealed. For the case of 40HN2MA structural alloyed steel the presented methodology provides an accurate idea on the acting components of the cutting force. The effect of lagging attenuation of the cutting force components at the stage when the cutting edge leaves the cutting zone has been revealed for the titanium alloy. The nature of this effect may be a case of future study.