| 摘要 |
<p>A hole machining tool is provided in which movement balance and rigidity of a tool body are enhanced and which can simply and precisely adjust a position of an insert to form a machined hole having a high circularity with high dimensional precision. A recessed portion and an attachment seat are formed in a front end portion of the tool body. A panel-shaped insert is attached to the attachment seat in a state where the thickness direction thereof is matched with the diameter direction of the tool body and a surface of the insert facing the rear side in a tool rotation direction becomes a pressed surface. A peripheral cutting edge is formed at a ridge portion of an inclined surface on the outside in the diameter direction of the tool body, a bevel edge is formed at a ridge portion on the front side of the tool body, and a back taper is attached to the peripheral cutting edge. A pressing member (40) for pressing the pressed surface (61) of the insert (50) to adjust a position of the peripheral cutting edge in the diameter direction of the tool body is disposed on the rear side (31B) of the attachment seat (31) in the tool rotation direction (T).</p> |
