AgieCharmilles Form X 400 CNC Sinker EDM

The AgieCharmilles FORM X 400 is the smaller of GF Machining Solutions' two FORM X die-sinking machines, the series GF places at the top of its range for accuracy on larger parts and batch work. It offers 400 x 300 x 350 mm of X, Y and Z travel, a best surface finish of 0.05 μm Ra, a 490 l dielectric capacity, and takes workpieces up to 820 x 580 x 250 mm and 800 kg.

The construction explains the weight. The body is mineral cast, chosen to damp vibration and slow thermal change, and the whole machine is under thermal management so accuracy holds through long multi-cavity runs. The electrical cabinet is water-cooled for the same reason. At 3837 kg without dielectric in a 2460 x 1410 x 2600 mm footprint, the FORM X 400 is far heavier than its travel suggests, and the floor must be planned for that plus 490 l of fluid.

On the process side, a Micro Spark control board gives fine control over each spark for small details, sharp geometry and fine finishes. GF builds the series around multi-cavity mould making, with dedicated multi-cavity application technologies, wear partitioning and electrode management algorithms. A Renishaw measuring probe is optional for coated workpieces, and the series is designed to integrate with SYSTEM 3R automation.

The nearest alternative is the AgieCharmilles FORM F 450, with the same 300 mm of Y and 350 mm of Z, 450 mm of X instead of 400 mm, and the same 800 kg workpiece limit. The AgieCharmilles FORM F 450 lists 0.4 μm as standard (0.10 μm optional) and 10 kg electrodes, while the FORM X 400 reaches 0.05 μm and carries 50 kg electrodes.