| 摘要 |
PROBLEM TO BE SOLVED: To provide an economically advantageous liquid supply structure for a tool capable of securely supplying coolant to a cutter tip even during high speed rotation and increasing a flow rate of coolant by restricting an area of an injection part from a collet and having excellent tool holding performance. SOLUTION: A straight collet 11 in which a cover ring 12 is mounted on a flange 11a is inserted into a holder main body 22. After that, the tool T inserted into the collet 11 tightens the collet 11 and is fixed by a tool holder 21 for use. Coolant C composed of oil mist, cooling liquid, and cooling air flows in from a pull-stud 23 side at a rear end and passes through a slitting groove 11b of the collet 11 as shown by the arrow mark and is injected toward a cutter tip of the tool T through a nozzle hole 12c of the cover ring 12 with force. COPYRIGHT: (C)2003,JPO
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