| 摘要 |
<p>A projection of a pressing member is accurately inserted into a cutting-blade-tip mounting hole and is engaged with the inner peripheral surface of the mounting hole to reliably fix the cutting blade tip to a tool holder. A pressing member comprises a body and a projection (3). The body has an upper surface engageable with the head of a fastening bolt (40), a lower surface facing a tool holder (10), and a bolt hole (5) into which the fastening bolt (40) penetrating between the upper surface and the lower surface is inserted. The projection (3) projects from the lower surface of the body and is engageable with the mounting hole (31) formed in the cutting blade tip (30). The projection (3) comprises sloped surfaces (3a) facing the direction of rotation of the fastening bolt (40) about the center axis thereof and tilted so that the projection tapers from the root side toward the front end side thereof.</p> |
