| 摘要 |
PURPOSE:To shorten interchanging time of tools by providing a pair of gears which are disengaged in working and engaged with each other in interchanging tools so as to transmit positively the rotation of a spindle motor to a tool magazine. CONSTITUTION:In interchanging tools, a spindle head 4 is lifted while a spindle 2 is oriented by a spindle motor 6. When the spindle 2 is lifted further by a feed motor 16, arbor 44 is loosened from the tapered portion of the spindle and then a slider 30 abuts against a stopper 36. At this position, the slider 30, i.e. a magazine 40 is stopped to lift only the spindle head 4. A tool 42 loosened during that time is withdrawn from the spindle to be held by the magazine 40. Next, a gear 48 at the magazine side meshes with a gear 46 at the spindle side. While the rotational amount of the spindle is detected by a position coder 10 the spindle motor 6 indexes the tool magazine through the gears 46, 48. |
