| 摘要 |
A tool chucking structure of a rotary tool post for a machine tool is provided to allow a cover to help the heat in a housing to be emitted by making the cover with stainless steel. A tool chucking structure of a rotary tool post for a machine tool includes a housing(10), a drive spindle(20), a drive bevel gear(30), a driven bevel gear(40), and a driven spindle(50). The housing is fixed to the rotary tool post. The drive spindle is embedded in the housing to receive a rotational force from the drive motor. The drive bevel gear is mounted on one end of the drive spindle. The driven bevel gear is engaged with the drive bevel gear to change the rotational force of the drive spindle vertically. The driven spindle is mounted on the driven bevel gear. Tools are fixed to one end of the driven spindle. A tapered portion(55) is formed on the outer surface of the driven spindle. A plurality of recesses(57) are formed from the outer surface of the tapered portion to the inner surface thereof.
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