Sinker EDM Technology Speeds Deep-Rib Roughing

Makino’s SuperSpark IV sinker EDM technology is designed to reduce roughing times in deep-rib applications. It uses a combination of shortened jump cycles and spark-gap adaptive power control to improve process efficiency and productivity. According to the company, more than 60 percent of total process time is spent out of the cut during standard sinker EDM jump cycles. This technology is said to more than double the actual cutting time because its shortened jump height requires less time for electrodes to return to the workpiece.

In addition, the spark-gap adaptive power control enables electrodes to discharge sparks during the jump cycle for continuous cutting throughout the EDM process. As the electrode depth increases, the power and spark gap decreases to prevent overburn. Together, these technologies are said to improve total machining times.

The EDM  also features automatic calculation, and adjustment of machine power according to depth and draft to improve machine efficiency. The technology is available on all Makino sinker EDM machines with MGH6 generator/control or later.