| 摘要 |
PCT No. PCT/SE83/00271 Sec. 371 Date Mar. 2, 1984 Sec. 102(e) Date Mar. 2, 1984 PCT Filed Jul. 4, 1983 PCT Pub. No. WO84/00123 PCT Pub. Date Jan. 19, 1984.A laser cutting plant includes a cutting head guidable in two directions, to which a laser beam is taken via three mutually perpendicular tubes (2, 4, 14) in sealed connection to each other and containing two deflection mirrors (22) for the beam. The laser beam unit is stationary. The mirrors are carried by the respective tube (4, 14) via flat throats (24) moving in longitudinal slits (21) in the connecting tubes (2, 4) said slits being covered by two opposing and resiliently engaging lips (31). |
