The geometry of the milling cutter is formed by the shape and mutual position of the working surfaces of the teeth.
The geometry of the milling cutter is formed by the shape and mutual position of the working surfaces of the teeth. The main elements of a cutting mill are the surfaces of the teeth, the blades, and the angles between them.
The front surface is the surface on which the chips come off.
The back surface (during the cutting process) faces the machined plane of the workpiece.
The intersection of the back and front surfaces creates a cutter tooth blade.
The narrow surface of the blade on the back side is called a ribbon.
The width of the ribbon is usually no more than 0.1—0.2 mm.
The surface is called the back of the tooth.
The front surface with the diametrical plane of the cutter forms the front corner.
The back surface is formed by a back angle with a plane that is perpendicular to the diametrical plane.
The element of a straight-toothed cylindrical milling cutter, the back and front surfaces at the intersection form a sharpening angle.
The front surface of the tooth having a machined surface of the workpiece creates a cutting angle.
The number of teeth of the cutter z characterizes the value of the angular pitch of the teeth = 360/z .
The shape of the teeth is distinguished by cutters with backed and pointed teeth.
Three types of pointed teeth of cutters are used: with a curved back that has an outline that is close to a parabola.
with a broken back — for cutters with large teeth that work in harsh conditions; with a straight back — for small—toothed cutters that allow six to eight overflows and are intended for light work; The strength of the tooth of the third type is significantly increased in comparison with the tooth of the 1st type and slightly less in comparison with the tooth of the 2nd- the type.
09 Martha 2017
