Schneidwerkzeug.

摘要

A cutting tool having a positioning block (23) inserted between the cutting insert (22) and the insert-receiving seat (21) is disclosed. The disclosed cutting tool demonstrates excellent resistance to damage by severe vibration caused by the milling process. The cutting tool of the present invention comprises (a) a tool body (20) having a recess formed at a forward end thereof and defining an insert-receiving seat (21); (b) a cutting insert (22); (c) a positioning block (23) to be placed between the cutting insert and said insert-receiving seat, having a top and bottom faces and having a hardness thereof which is lower than that of a surface of insert-receiving seat; and (d) clamp means (24, 25) for securing the cutting insert and the positioning block on the insert-receiving seat. The above described positioning block (23) is able to absorb some extend of vibration of the cutting insert during the milling process. According to the present invention, there is also provided the cutting tool in which a positioning block (23) has two layers. A hardness of a surface of the insert-receiving seat is higher than that of the first layer but is lower than that of the second layer.