| 摘要 |
It is possible to effectively supply mist to a machining point in a case of machining a comparatively deep point in a workpiece. For this purpose, two supply systems s1,s2 are provided to supply air and coolant separately into the spindle 1, and a mist generating device 33 which is able to jet mist by mixing air and coolant which are supplied through these supply systems is provided in the front edge of the spindle 1 or in the tool holder 8.
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