Tungsten Carbide Twist Drill’s Main Auxiliary Planes

There are several major tungsten carbide twist drill’s auxiliary planes, involving flat base surface, cutting plane, the profile and column profiles.

If the movement is not considered, tungsten carbide twist drill’s head base surface at any point on the main cutting edge due to the characteristics of the structure of tungsten carbide twist drill, the base surface of the drill point of the cutting edge is varied.

Cutting plane at any point on the main cutting edge, the cutting direction is included but the point cut in the plane of the point of the machined surface. Cutting plane and perpendicular to the base surface, and on the main cutting edge of the cutting plane of the points are not the same. The main cutting edge of the column cross-section at any point through the center-line of the drill point and to make the center line of the cylindrical surface of the main cutting edges of different columns of different cross-sectional surface of the cylindrical radius.

 

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