A milling tool, for the
hobbing of a workpiece having cogs, comprises a tool body (1) that has a fixing end (3), an opposite outer end (4), and a
peripheral surface (7). The tool body comprises a large number of separated seats (9) that are arranged at the
peripheral surface (7) one after the other along a
helix line (x) having a constant
pitch. A corresponding large number of replaceable milling inserts (2) comprise an under side (21), an opposite upper side (22) that forms a
chip surface (24), a circumferential edge side (23), two pairs of main
cutting edges (25). The
chip surface (24) extends in an extension plane that comprises the main
cutting edges. Each seat is formed to receive one of the milling inserts and comprises a
support surface that allows support to the milling insert projecting from the tool body for
cutting engagement with a gash of the workpiece. The
chip surface extension plane of each milling insert has a normal that is parallel to the tangent of the
helix line where the same intersects the extension plane.