| 摘要 |
PURPOSE:To prevent the generation of noise, by supplying lubricating oil in a feed tube to be recirculated and lubricating inside the feed tube. CONSTITUTION:A feed tube 5 inserts into its hollow part 7a rotating bar material 4 from an end opening part while a push rod 8 from behind the bar material. The push rod 8, pressing the rear end of the bar material, urges the bar material in its feed direction. This urging action is performed by a transmission chain 13 wound on sprockets 11, 12. Lubricating oil, being supplied to the rear end of the feed tube 5 from an oil source 16 through a supply oil pipe 15, is recirculated to the oil source 16 through a discharge oil pipe 20. A noise is prevented by lubricating inside the feed tube 5. |
