Wood drill has cylindrical drill head, connecting part, main blade, section that is lying interior runs into centering spike, and swarf ejection chamber that is extended by pre-swarf removal groove into centering spike

摘要

The wood drill (1) has a cylindrical drill head (2) and a connecting part (3) attached to a drill head opposite to a drill direction for connection at a drive unit. The drill head has a centering spike (4) that is projecting in drill longitudinal axis and lies in the drill direction for centering the wood drill. A main blade (5) has a section lying interior runs into the centering spike. A swarf ejection chamber (8) is extended by a pre-swarf removal groove (12) into the centering spike. Independent claims are also included for the following: (1) a fixing system, which has a groove of a main cross cutting is arranged on an extent circle (2) a blade dispenser, which has the cutter head, centering spike, and main blade.