| 摘要 |
A cutting tool comprises a tool holder body having a passage, a cutting insert seat mounted on the tool holder body adjacent the passage, and a cutting insert mounted on the cutting insert seat by a clamping device for tightening the cutting insert against the cutting insert seat. The clamping device includes a two-collar screw situated in the passage and is threadedly engaged in the tool holder body. The two-collar screw has two mutually spaced collars delimiting an annular space between themselves. The clamping device further includes a guide block situated in the passage of the tool holder body and extending into the annular space. The guide block cooperates with the collars to be displaced thereby parallel to the longitudinal axis of the two-collar screw upon turning of the screw relative to the tool holder body. The clamping device also has a tightening pin which passes through a central aperture of the cutting insert and through an aperture of the cutting insert seat and which is operatively connected to the guide block for pulling the cutting insert against the cutting insert seat upon tightening of the two-collar screw. |
