Patent ID: 6073710
Filing Date: 2000-06-13
Classification: B23B,B28D,Y10S,Y10T

Abstract:
A combination drilling member comprising an axially elongated drill, such as for drilling rock, said drill having a first end leading in a drilling direction and a second end trailing in the drilling direction, said first end having a cutting member (3), said drill having an axially extending shaft (2) with at least one helical drilled material removal groove (4) extending for at least an axially extending portion of said shaft between the first and second ends, an auxiliary element (6) detachably connected to said shaft for rotation therewith, said auxiliary element comprising at least one elastic plastic member (9) extending around said shaft transversely of the axial direction thereof and deformably engaged with said shaft, said plastic member having a through hole (10) extending therethrough in the axial direction of said shaft, said shaft extending through the through hole (10) and said auxiliary element being secured to said shaft by at least one of frictional and positive locking arrangement against inadvertent axial displacement and held against relative rotation with said shaft to torques up to 40 Nm.