Kennametal India Limited

Ravi Halasur

Mahesh Todkar

An indexable drill insert includes a drill body having a central longitudinal rotational axis (C), the drill body comprising a shank portion and a fluted cutting portion, the fluted cutting portion having a front clearance face and a plurality of flutes, the fluted cutting portion includes a central insert pocket capable of receiving a central cutting insert and a peripheral insert pocket capable of receiving a peripheral cutting insert. For the central cutting insert, a central, longitudinal axis of a projection of the flute coolant exit aperture can intersect a vertical plane (PA) having an area (A) or a horizontal plane (PB) having an area (A). For the peripheral cutting insert, the central, longitudinal axis of the projection can intersect a vertical plane (PA) having an area (A) or a horizontal plane (PB) having an area (A).

Indexable drill assembly with coolant system

Drilling tool systems including a drilling body and a drilling inserts are disclosed. The drilling inserts include four indexable cutting edges. The four cutting edges may each comprise a plurality of cutting edge segments. The plurality of cutting edge segments are provided at distinct angles with respect to a reference plane of the drilling insert to provide effective chip breaking and a stronger cutting edge at the drilling insert corners. Furthermore, the side surfaces of the drilling inserts allow the drilling insert to be more stably supported in a pocket of the drilling body. The drilling inserts may be used in a central pocket of a drilling body.

Indexable drilling inserts

Drilling tool systems including a drilling body and a drilling inserts are disclosed. The drilling inserts include four indexable cutting edges. The four cutting edges may each comprise a plurality of cutting edge segments and a wiper edge. The plurality of cutting edge segments and the wiper edge are provided at distinct angles to provide effective chip breaking and a stronger cutting edge at the drilling insert corners. Furthermore, the side surfaces of the drilling inserts allow the drilling insert to be more stably supported in a pocket of the drilling body. The drilling inserts may be used in a peripheral pocket of a drilling body.

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Bengaluru, India

Ravi Halasur