GF Machining Solutions AgieCharmilles FORM P 350

New FORM P 350 machines typically price between $150,000 and $300,000. A base machine with the AC FORM control, iQ technology, and standard dielectric system starts around $150,000-$180,000. Adding the U/V taper axis, System 3R automation interface, enhanced filtration, fire suppression, chiller, and extended electrode changer approaches $300,000 for a fully equipped production machine. Used AgieCharmilles FORM series machines trade between $50,000 and $120,000 depending on model year, condition, and generator specification.

GF's iQ technology is a suite of three intelligent process control functions integrated into the AC FORM generator and control: iQ power automatically selects and optimizes discharge parameters (pulse duration, peak current, frequency) for the material combination and required surface finish being burned, eliminating the need for operator-selected generator programs. iQ vision uses optical sensors to monitor the erosion gap condition and surface finish development in real time, adjusting generator output to maintain target finish conditions without interrupting the process. iQ check measures electrode wear at defined intervals and updates axis offset compensation to correct for wear-induced dimensional drift before it affects cavity accuracy. Together, the iQ suite reduces setup time, eliminates finish variation from incorrect settings, and enables reliable unattended EDM production.

The Sodick AG40L and FORM P 350 are the primary competitors in the compact precision sinker EDM segment. Key differences: Sodick uses linear motor drives on all axes for zero-backlash positioning, while GF uses ballscrew drives with high-accuracy linear encoders. Sodick's LN Professional control is well-regarded for its cutting condition database depth. GF counters with the iQ technology suite's automated intelligence features and System 3R ecosystem integration. Shops running GF milling machines typically favor the FORM P 350 for workflow integration; shops prioritizing pure positioning accuracy for deep-cavity precision work often prefer Sodick's linear motors. Both achieve sub-2-micron positioning accuracy in practice.

The FORM P 350 is compatible with all standard die-sinking EDM electrode materials: graphite (all grades from fine ISO-63 through coarse production grades), electrolytic copper, copper-tungsten, and silver-tungsten. Graphite is the most common electrode material for mold work due to its machinability and good surface finish performance. Copper provides excellent surface finish at the cost of slower machining and heavier electrodes. Copper-tungsten is used for deep-narrow features where copper's thermal conductivity and tungsten's wear resistance are both needed. The iQ power generator automatically selects optimal discharge parameters for the electrode material type entered at setup.

Yes. The FORM P 350 is fully compatible with System 3R WorkShopManager for robot cell integration. A robot cell can load and exchange electrodes from a library, manage workpiece pallets in the EDM tank, and coordinate program execution across multiple jobs. The AC FORM control's automation interface communicates job status, electrode requirements, and process completion to the cell management software. For shops running electrode machining on GF Mikron machines with System 3R tooling, the electrode transfers directly to the FORM P 350 robot cell without re-referencing, maintaining the full accuracy chain from electrode machining through EDM burning.

The FORM P 350 achieves Ra 0.05 µm (50 nanometers) surface finish in fine mirror-finish EDM settings on most hardened tool steels using copper or fine graphite electrodes. This approaches the surface quality of manual polishing to 1200-1500 grit. More typical production finishes range from Ra 0.2 µm (rough EDM) through Ra 0.1 µm (semi-finish) to Ra 0.05-0.08 µm (mirror finish). Rough EDM (Ra 0.8-3.2 µm) is fastest and used for material removal from pre-machined pockets. Each surface finish level is achieved through a sequence of generator programs that progressively reduce discharge energy. The iQ vision system monitors this progression automatically and advances to the next generator program when the current finish target is achieved.