| 摘要 |
PCT No. PCT/IT95/00128 Sec. 371 Date Dec. 1, 1997 Sec. 102(e) Date Dec. 1, 1997 PCT Filed Jul. 25, 1995 PCT Pub. No. WO97/04912 PCT Pub. Date Feb. 13, 1997The boring machine according to the present invention , that may be applied onto the piece to be bored and suitable for performing welding surfacing on the same point to be bored, inside or outside, with working performed in automatic or semi-automatic, comprises: a tubular box inside which a shaft may be inserted, guided by an engine bushing that allows the rotation and the longitudinal moving of a tool head-carrying shaft, a manual supporting handle for transport; three motoreducers, fed with direct current and installed inside said bonnet; three engines, for the rotation of the head-carrying tool shaft, for the forward and backward advancement of the head-carrying tool shaft in the boring phase, and for the welding surfacing distribution phase of eventual pieces to be re-treated, allowing the rotation of the torch by continuous wire welding at very low revolutions that may be electronically varied; a screw placed on the tool-carrying head, for the manual advancement of the tool; a device for the rotating connection of a torch. |
