Tool e.g. for finely machining boring surfaces, has blade plate having four geometrical blades and two guide rails are provided and free surface forms free angle with imaginary plane perpendicular to central plane of blade plate

摘要

The tool (1) has a blade plate (5) having four geometrical blades (9, 9'). Two guide rails (35, 35') are provided and a free surface forms a free angle with an imaginary plane (E) perpendicular to a central plane (M) of the blade plate and which cuts the blade. The projection of the blade plate is adjusted (2) over a peripheral surface of the tool. The construction angle alpha and the free angle Beta are adapted such that the equation alpha - Beta equals approximately 1deg, and also a free angle of approximately 1deg is adjusted.