| 摘要 |
A cutter head releasably mounted on a tool holder and to be fitted with an exchangeable cutting insert while the tool holder is adapted to be secured to a lathe or the like; a substantially U-shaped bushing being articulatedly mounted in a recess formed in an end of the cutter head so as to define a receiver socket adapted to receive an engaging head of a drawbar longitudinally displaceable within the tool holder; the arrangement being such that with the engaging head of the drawbar located in said receiver socket, a traction force exerted on the drawbar results in transverse abutting surfaces of the bushing being displaced into a clamping abutment with corresponding transverse abutment surfaces formed on the tool holder.
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