放電加工の研究

放電の分散および集中について(鋼対四六黄銅の場合)

抄録

In electrical discharge machining based on condenser discharge system, the writer tried to pursue the relation of single strike condenser discharge between continual discharge (nearly practical machining condition) by means of micro-photographical observation on the surface crater.
As a result, in continual discharge, the writer found out that there were despersion and concentration phenomena of discharged crater distribution, and made their tendency clear.
if discharge is not intermittent, smooth machining cannot be obtained, so it is desiralc to disperse continual condenser discharging distribution.
The discharge of high frequency source alone, makes dispersion easy ; and superposition of proper high frequency source to concentrated discharge condition in D-C, source alone, helps the dispersion of discharges.