Segmented Core Drill Bit With Vacuum Brazed Outside

A drill bit, drill bit allocation in front with a plurality of cutting edge part, and a base end side of the cutting edge part and on the base end part is formed on the shank axis shaped drill body; The cutting edge part is composed of a cutting edge cutting surfaces and clearance face edge forward end side projection equipment and the formation of the cutting edge, since the center of rotation of the outer diameter side drill lateral configured to substantially radial; Compound action utilizes rotary motion and axial direction of the action of impact cutting, which is characterized in that, between the cutting edge part is provided with at least 2 main cutting edge part, and is arranged on the circumferential direction of the cutting edge part and the cutting edge part, at least 2 side cutting edge part; The cutting edge part is provided with a main cutting edge as its cutting edge, the cutting edge is located in the center of rotation of the outer edge of the inner end of the rotation trajectory, the outer end is positioned on the cutting edge part, the side cutting edge portion has a side cutting edge as its cutting edge, the side cutting edge inner end located from the center of rotation of the outer diameter side part of the outer end of deviation, in from the outer edge of the rotation trajectory cutting edge portion of the rotating center deviation of the position of the side.

Segmented Dry Core Drill Bit

The drill bit is used to cut through or blind holes drilled in the solid material, tool and hole reaming on the existing. Commonly used drills are mainly Hemp flowers drill, flat drill, center drill, deep hole drilling and trepanning drill. Reaming drill and countersink drill though not in the solid material drilling, but the habit will also them in a bit of a class. Digging, bit rotate around the vertical shaft, and axially movable. The soil is in the cutting torque and axial force on the bit, extrusion and centrifugal effects of blade is damaged and ramming loose and broken formation, soil flow pressure to the pit wall, along the page elevator to the surface. When the soil flow into the pit wall barrier when, because of broken soil around the centrifugal force thrown into the pit, to complete the whole process of digging.