抄録
In traditional machining such as turning, milling and grinding to permanent magnets, there is an observed machining difficulty attribute to magnetic forces. Therefore, Electrical Discharge Machining (EDM) was carried out for magnet shape machining. Because EDM is a thermal process, this method is also thought to be able to control the magnetic flux density on the machined surface. In this study to clarify the influence of the magnetic flux density on the machined surface, the following machining conditions were investigates, (1) Duty factor, (2) input energy of one pulse. Sintered neodymium material of various sizes was used as the work-piece for EDM. Experimental results revealed the influence of the magnetic flux density was low under the low energy machining condition. However, using high energy machining condition or high Duty Factor, the magnetic flux density came down the value relative to initial value.
