| 摘要 |
<p>Disclosed is a crankshaft mirror capable of preventing the occurrence of abnormal rocking motion of a swing head caused by swarf generated accompanying cutting. The upper end of a ball screw shaft (31) configuring a swing drive mechanism (24) of a swing head (21) swingably attached to a slide (8) is rotatably supported by a bearing device (33). Meanwhile, the lower end of said ball screw shaft (31) is in a free end state, and on the bottom end of the ball screw shaft (31) in the slide (8) a chute (60) is provided for expelling swarf generated accompanying cutting.</p> |
