| 摘要 |
An apparatus for cutting chips from a workpiece includes a cutting tool having a rake face and a flank face, the rake face including a cutting edge. A chip breaker is positioned adjacent the rake face for lifting a chip from the rake face after the chip is cut from the workpiece. A supply head is positioned adjacent the chip breaker and a chamber for receiving cryogenic coolant may be formed between the supply head and the chip breaker. A primary nozzle is positioned for directing cryogenic coolant from the chamber onto the rake face and under the chip cut from the workpiece. The primary nozzle may be formed by one or more nozzle channels recessed into the rake face of the cutting tool. A secondary nozzle positioned adjacent the flank face of the cutting tool for directing cryogenic coolant from the chamber onto the flank face of the cutting tool may be provided, wherein access of the secondary nozzle to cryogenic coolant from the chamber is determined by movement of the supply head between first and second positions with respect to the chip breaker. |
