| 摘要 |
In an apparatus for drawing a metal tube in which lubrication oil is ejected from an ejecting opening formed in a hollow rod supporting a plug to apply the lubrication oil onto an inner surface of a raw tube, the lubrication oil ejection responsiveness when a discontinuous lubrication oil supply is performed is enhanced. In the drawing apparatus in which a metal raw tube (2) is processed by passing the same between a die (10) for forming an outer surface and a plug (11) for forming an inner surface, an ejecting opening (21) from which lubrication oil (L) is ejected opens into an outer peripheral surface of a hollow rod (20) supporting the plug (11). The ejecting opening (21) is provided only in a region of the rod (20) higher than the center thereof in the up-and-down direction. |
