CUTTING HEAD OF ICE DRILL Russian patent published in 2015 - IPC A01K97/00 

FIELD: construction.

SUBSTANCE: cutting head includes a housing and at least two cantilevers going out of the centre and provided with cutting knives fixed on them. In the central part of the housing there is a holder of a tubular shape on one side for connection to a tubular load-carrying member of the ice drill. Along the holder perimeter there are at least two pins of rectangular shape with their corresponding cavities for connection to the lower part of the screw. On the attachment side of the cutting knives in the central part of the housing there is a groove of cylindrical shape, at the bottom of which there is a cone-shaped projection with a vertical slot for a drilling centring knife.

EFFECT: improving productivity of the device.

7 cl, 6 dwg