The influence of a saw chain dynamics on cutting links wear

This study is aimed at determination of the normal contact pressure which acts on the cutting edge at different points of the contact area. The law of their distribution is described by the formulas of the theory of elasticity. To calculate normal pressures at a wear chamfer of a certain width in the cross sections perpendicular to the main cutting edge one of the solutions of the plane contact problem for the case of a rigid stamp (Flaman problem) can be used. The calculations analysis shows that the additional pressure caused by relative vibrations of the tool and rough workpiece increases indefinitely near the cutting edge and decreases smoothly when removed from it. Shear stresses near the cutting edge also increase indefinitely causing rapid wear and rounding of the cutting edge.