2. In an orthogonal metal cutting test, the following information is available: Cutting Force = 900 N, Thrust Force = 900 N; Width of cut = 2.5 mm, Thickness of the workpiece before cut = 0.25 mm, Chip thickness (after cut) = 1.0 mm; Chip-tool contact length on tool's surface (Rake Face) = 0.5 mm; Tool Rake angle (inclination of the tool rake face): -5 degrees (5 degrees on the negative side).
Draw the Force Circle at the tool's cutting point/edge and show on the drawing tool's negative rake angle, the shear plane angle, the friction angle, and all the force vectors in the Force Circle.
Calculate: Shear plane angle; Friction angle; Mean Shear Stress on the Shear Plane; Mean Frictional Stress on the Tool Rake.