| 摘要 |
A cutting tool holder adapted for mounting thereon a cutting insert having a top face, a bottom face and an insert bore extending between the top face and the bottom face, and having an inner surface. The holder comprises a seat defined by a base surface and at least one side wall angled to the base surface, a seat bore extending along a bore axis, and having an open end at the base surface. The holder also comprises a securing arrangement having a securing member extending between a proximal end and a distal end, the securing member having a head portion at the proximal end and having its distal end received within the seat bore. The securing arrangement also has a displacement arrangement adapted to displace the securing member along the bore axis of the seat bore between a mounting position in which the head portion protrudes from within the seat bore through the base surface into the seat to a first extent, defining a first gap distance between the head portion and the at least one side wall allowing the cutting insert to be placed within the seat and/or being fully removed from the seat, and a securing position in which the head portion protrudes from within the seat bore through the base surface into the seat to a second extent, smaller than the first extent, defining a second gap distance between the head portion and the at least one side wall smaller than the first gap distance, so as to engage the inner surface of the insert bore, thereby securing the insert between the head portion and the at least one side wall. The insert seat is further formed with a support surface configured for engaging and providing support to the head portion of the securing member at least in the securing position. |
