SKERSTAL

摘要

Cutter comprising a holder (1), a cutting element (4) mounted on an axle (3) and a mechanism (11) for rotation of the cutting element (4). The rotation mechanism (11) consists of a "nut-screw" pair mounted in the holder (1) parallel to the axle (3). The holder (1) serves as the nut whereas the screw (12) is provided with a section (16) shaped as a body of revolution with a quadric surface. The axle (3) is provided with a protrusion (19) contacting with the surface (16) whereby the point (20) of their contact is located beyond the plane of the geometrical axes (18, 8) of the screw (12) and the axle (3).