EDM drilling offers higher productivity

Recently announced as the new UK technical partner for Winbro Group Technologies, the Engineering Technology Group (ETG) is introducing the new Winbro HSD-351 high-speed EDM drilling system.

The Winbro HSD-351 is a compact, high-speed, single-point EDM drilling solution with a solid-state, air-cooled EDM generator that has already proven its pedigree in the aerospace and IGT sectors. Now, the machine is set to make its mark in wider industry.

Winbro’s HSD-351 offers a work axis envelope of 300 x 350 x 550 mm in the X, Y and Z axes, with a rotary C axis of ±360° and an A axis of +10°/-135° that allows end users to process five faces of the workpiece in a single set-up. Linear accuracy and repeatability is 0.008 and 0.006 mm respectively, with a rotary axes accuracy and repeatability of 20 and 15 arc/sec.

Regarding technology, the Winbro HSD-351 provides fast automatic electrode changes, where the machine spits, loads and qualifies the electrode from the cartridge system in less than 15 seconds. The automated tool changer utilises twin 14-station carousels and an automatic barrel changer (ABC) with barrels that each hold 15, 25 or 49 electrodes up to 700 mm long. Notably, the tool change also incorporates an automatic nose guide changer (AGC), and it typically accommodates up to 13 nose guides plus a probe.

The six-point probing system ensures accurate, automated machine calibration via an MP250 Renishaw probe carried on the AGC carousel. In the work envelope, an Erowa pneumatic flat chuck (supplied as standard) facilitates the clamping of components up to 10 kg in weight.

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