The Angle of the turning tool
Dao side Angle The edge of the blade is perpendicular to the handle. The function of this Angle is to keep the edge of the knife edge and the workpiece to avoid the surface of the cutting or chafing of the blade and workpiece.
After the bevel From the tip of the knife to the handle of the knife. This Angle mainly is to guide the drainage and reduce the drag of the cuttings. The cutting of metal is generally 8 to 16 degrees for high speed steel, while the carbide turning point is negative dip or zero.
Edge clearance Angle The Angle of the edge of the knife is the Angle of edge clearance. The edge clearance Angle creates a space between the work surface and the side of the knife to concentrate the cutting effect on cutting efficiency. The Angle of high speed steel is about 10 to 12 degrees.
Before clearance Angle From the Angle of the tip of the knife to the tip of the knife, a space is formed under the front clearance Angle, the working face and the tip of the knife, and the cutting action is concentrated on the nose. If this Angle is too small, the tool will rub on the surface, and produce the rough surface, the Angle is too big, the knife can easily shake, the knife nose breaks the crack cannot be made. The Angle of the Angle of the knife should be considered when the cutting edge of a tool with a slanted blade is mounted. The Angle of the high speed steel is about 8 ~ 10 degrees, and the carbide tool is between 6 and 8 degrees.
