LVD Strippit V-L

A 48-station thick turret and a 4-kW fiber laser share one frame on the LVD Strippit V-L. It is the turret-based machine in LVD's punch-laser line and the strongest, at 300 kN, which LVD describes as a 30-ton hydraulic punch press on a heavy-duty bridge frame.

Choosing between this and the single-head combination machines comes down to how the tooling is used. A turret keeps 48 tools in place and brings one under the ram quickly: tool change is listed at 0.9 - 2.1 sec., against 3 - 6.5 sec. on the Strippit PX-L. Four of the stations are 88.9 mm auto-index stations, and the mix accepts forming, embossing, louvering, wheel and tapping tools. For repeat work with a stable tool set, that is the faster arrangement. What the turret cannot offer is the single head's forming height: feed clearance here is 25 mm (1.0 in), where the Strippit PX-L has 80 mm.

The laser takes over wherever tooling would be slow or unavailable: odd-shaped holes, contours and etching. LVD states that a full-size 3050 x 1525 mm workpiece is cut and punched without repositioning, and a 406 mm x 1524 mm chute clears laser-cut parts and scrap. Punched parts use a 500 x 525 mm (19.7 x 20.7 in) work chute.

Punching figures are 910 HPM at 1 mm pitch, 440 HPM at 25.4 mm pitch and 1750 HPM in marking, at 128 m/min positioning speed, in material up to 6.35 mm (0.25 in). Hardened turret sleeves hold alignment and are replaceable. Average power consumption is 14.3 kW. As with the other combination machines, LVD's table says nothing about laser cutting thickness, so that needs to be confirmed against the work.