| 摘要 |
PURPOSE:To enable long term unattended operation by circulating holder groups arranged in double rows independently thereby holding many tools on spindle head and realizing multi-function machining center. CONSTITUTION:Rotary tables 5a, 5b rotatable independently around horizontal axis are mounted on the sideface of spindle head 3 while tool holder groups 6a,..., 6b,... are fixed risably/tiltably on each table 5a, 5b around a fulcrum to hold various tools 7 on each holder 6a,..., 6b,... through a tapered shunk 8. Each holder 6a, 6b can be tilted vertically only at the lowermost end position of circular circulation locus. When turning a tool replacing arm 9 at predetermined level against the vertically tilted holders 6a, 6b, the tapered shunk 8 can be engaged with the leading edge of arm 9. Thereafter, the arm 9 will lower to pull said shunk 8 from holders 6a, 6b and turn to be inserted into the spindle 2. |
