Marking device to project optical assistance marks on work piece; has adjacent projection units connected to tool work head by holder to generate light beams in planes crossing at tool axis

摘要

The device has two adjacent projection units (2), which are each connected to a tool work head by a holder (3). The projection units each have a light source and an optical unit to generate a light beam in a radiation plane (6). The projection units project visible, crossing optical lines (9) along the tool axis (8) with perpendicular radiation planes. The intersection line of the radiation planes coincides with the tool axis. The holder has at least three support points (10) for the outer surface of the work head. The support points are arranged along two parallel spaced lines, with the radiation planes of the projection units are arranged centrally between them.