Spot drilling insert

A spot drilling tool comprising:

• a drill holder having an axis defining shank with a forward end defining an insert receiving socket;
• and
• a spot drilling insert comprising:
• an insert body having a socket-mating portion complementary in configuration to said socket;
• and
• a drill point integrally extending from an end of said insert body axially opposed to said socket mating portion, said drill point including a pair of substantially linear cutting edges inclined rearwardly from a chisel edge at the extreme forward end of said insert, each said cutting edge defined by an intersection of a substantially planar flute surface and a substantially conical land surface,
• wherein when said insert is received in said socket, said socket mating portion mates with said socket to position said cutting edges and chisel edge forwardly of said socket at a pre-determined position centered on the axis of said shank.

A spot drilling tool comprising:

• a drill holder having an axis defining shank with a forward end defining an insert receiving socket;
• and
• a spot drilling insert comprising:
• an insert body having a socket-mating portion complementary in configuration to said socket;
• and
• a drill point integrally extending from an end of said insert body axially opposed to said socket mating portion, said drill point including a pair of substantially linear cutting edges inclined rearwardly from a chisel edge at the extreme forward end of said insert, each said cutting edge defined by an intersection of a substantially planar flute surface and a substantially conical land surface, said drill point including two linear V-shaped flutes defined by said substantially planar flute surface and a second substantially planar flute surface meeting at a radius, said flutes being diagonally opposed and diametrically offset in a plane orthogonal to the drill point and separated by a tapered web which supports said chisel edge,
• wherein when said insert is received in said socket, said socket mating portion mates with said socket to position said cutting edges and chisel edge forwardly of said socket at a pre-determined position centered on the axis of said shank.