The Linear motor drive enables Z-axis jump up/down at the maximum speed of 36 m/min. This generates pumping effect for blowing out machining partiles, gas and tar while the electrode goes up/down. Sodick machines use linear motor drive and can machine deep cavities and ribs without bothersome flushing.

It eliminates the secondary discharge and minimizes the chance to produce deformed cavity caused by residual chips. The machining result does not vary from an operator’s experience. The machining time is also easy to estimate because it will always give a same result and stable machining if the same condition is applied.

		Result
Flush machining causes the existence of chips and gas It generates uneven concentration of dielectric fluid	Residual chips and gas cause secondary discharge which leads to unstable gap conditions, discharge spots and an uneven surface finish.		Depending on the flushing direction, the barrel deformation will differ. The cavity will be machined larger than expected cavity size. Limit for rib depth. Sharp corner machining is impossible.

High-speed servo up	High-speed servo down	Result
Rapid dielectric fluid flow machining chips and gas	The fast pumping effect of linear motor axis movements effectively sweeps out machining chips, out of the spark gap.		No secondary discharge, and no deformed machining Reduction size of electrode size is less, and saves cost The identical shape and dimensions can be machined repeatedly

70 mm deep rib is machined without flushing by graphite electrode.

Material : SKD61 Electrode : Copper Wall thickness : 0.28 mm Machining depth : 25 mm