| 摘要 |
<p>A machining head for machine tool comprises a spindle unit including a spindle to which a tool is fixed, and a supporting head including a determining mechanism for determining the angular position of the spindle unit by rotating it at least about an axis intersecting the axis of rotation of the spindle perpendicularly. The determining mechanism comprises a supporting shaft secured rotatably to the spindle unit, and a drive motor consisting of a rotor arranged in the housing of the supporting head and coupled with the supporting shaft and a stator surrounding the rotor to oppose the outer circumference thereof. A bearing for supporting the supporting shaft rotatably is arranged on the radial inside of the rotor within a range where the drive motor exists in the direction of the axis of rotation of the supporting shaft.</p> |
