Commonly used indexable insert shapes are regular in the shape of trigonal, quadrilateral, pentagonal, circular, and rhombic. The inscribed circle diameter of the blade profile is the basic parameter of the blade, and its size (mm) series are 5.56, 6.35, 9.52, 12.70, 15.88, 19.05, 25.4…. Commonly used blade tolerance grades include precision grade (G), medium grade (M), and ordinary grade (U), which can be selected as required.
Blades of various shapes have holes with or without holes in the center; those with no clearance angles or with different clearance angles; those with no chip breakers, and one or both sides with chip breakers.
In order to meet the needs of chip breaking under various usage conditions, the chip breaking groove of the blade is also made into various forms. The chip breaker of indexable inserts is usually sintered after pressing cemented carbide, and the through-type chip breaker can also be ground on the sintered blades.
Multi-stage and concave arc-shaped chip breakers and point-type chip breakers have a larger chip breaking range than single-stage slots (ie, the cutting speed, depth of cut, and larger feed amount range ).