Yasda YPC430

The Yasda YPC430 is a compact 5-axis machining center built around a trunnion table with A and C axes. Its working envelope is defined by the part it will swing: a maximum workpiece diameter of 350 mm (13.8 in) and a maximum height of 250 mm (9.8 in), with a maximum loading capacity of 100 kg. Those are small-part numbers, and the spindle matches them, an HSK-E32 unit listed at 20,000 RPM.

Accuracy is where the table is most specific. Rotary positioning accuracy is listed at ±2 arc-sec on the A and C axes, and the ISO 230-2 accuracy row gives three values, 0.5, 0.6 and 0.4 µm. On a trunnion machine the rotary figures matter as much as the linear ones, because an angular error at the table grows with the distance from the axis centre to the feature being cut. Keeping the part inside the 350 mm (13.8 in) diameter limit keeps that distance short.

The tool interface is HSK-E32, with HSK-E25 as an option. Both are small tapers intended for light cutters, so this is a machine for finishing and fine detail in five axes, not for heavy stock removal. The magazine holds 32 tools, with up to 90 tools as an option. Five-axis finishing tends to use several near-identical cutters as replacements during long cycles, which is the usual reason to order the larger magazine.

Linear rapids are 20 m/min (787 ipm) on X, Y and Z, in keeping with a machine whose cycle times are set by fine stepovers and not by traverse moves. For comparison, the YMC 430 uses the same HSK-E32 taper and the same 32 tools as standard with a 200-40,000 min-1 spindle, so a shop that needs spindle speed more than the trunnion table should look at that model as well.