| 摘要 |
PURPOSE:To easily select a tightening head for a work of different kind, by mounting plural multi spindle tightening heads to an annular rail, moving one of the tightening heads to a work position and connecting said one tightening head to a supply device of a tightening metal. CONSTITUTION:Of a plural number of multi spindle tightening heads 4, movably mounted on an annular rail 3, optional one head, corresponding to the kind of a work W, is selectively placed on a liftably movable rail 3a in the upper side of a machining table 2. This selection is performed by an indexing device 10, comprising a Geneva pin 10a and Geneva gear 10b, and the head 4, fixedly mounted on said movable rail 3a, is further connected to a bolt supply device 20 through a connecting head 19, then lowered by a cylinder, not shown in the drawing, to automatically perform tightening work. |
