| 摘要 |
PROBLEM TO BE SOLVED: To provide a multi-spindle head shortening a distance between axes of adjacent main spindles. SOLUTION: The multi-spindle head 1 rotatably supports a plurality of main spindles 10 including a tool holding part 11 for holding a tool 2 and a spindle 12 with a smaller diameter than that of the holding part 11. The tool holding part 11 is supported in a radial direction by a static bearing (hydrostatic bearing 15). The spindle 12 is also supported in a thrust direction by a ball bearing (angular ball bearing 25) supporting an axial load. A fluid supply path (oil supply path 17) for supplying a fluid to the static bearing (hydrostatic bearing 15) for supporting the tool holding part 11 is axially offset on the main spindle 10 from the adjacent fluid supply path (oil supply path 17). COPYRIGHT: (C)2009,JPO&INPIT
|
