Mill’s “Oil Shroud” Virtually Eliminates Dust in Graphite Machining
Amerimold 2017: EDM Network will exhibit the HM43GT graphite mill, which features an optional “oil shroud” that virtually eliminates the dust common to graphite milling.
EDM Network will exhibit the HM43GT graphite mill, which features an optional “oil shroud” that virtually eliminates the dust common to graphite milling. EDM-compatible oil captures the graphite dust, and then it is filtered through 2-30-micron cartridge filters. Vacuum compatibility is also available.
The HM43GT and two larger models, the HM65GT and HM86GT, all feature 30,000-rpm spindles with HSKE 32, 40 and 50 tapers, plus optional Blum laser diameter compensation and Fagor glass scales. In addition to graphite milling, the larger models can be equipped with 10- and 15-Kw motors to mill metals as hard as 63 HRC.
Producing fine finishes on EDMed surfaces has long been a goal, especially for mold and die shops that operate ram-type electrical discharge machines. Lately, there has been renewed interest in using additives in the dielectric oil to achieve ultra fine finishes with graphite electrodes without excessive burn times.
Moving on oil can let a grinding machine deliver more power along a smoother pass.
Hunt and Hunt’s president says adopting turn/mill machines was one of the most challenging endeavors his 55-year-old shop ever undertook. He also says it’s the best thing the shop could have done to become more efficient at contract work.