CUTTING REGULARITY AND DISCHARGE CHARACTERISTICS BY USING COMPOSITE COOLING LIQUID IN WIRE CUT ELECTRICAL DISCHARGE MACHINE WITH HIGH WIRE TRAVELING SPEED

摘要

＜正＞The analysis of cutting regularity is provided through using and comparing two typical cooling liquids.It is proved that cutting regularity is greatly affected by cooling liquid’s washing ability.Discharge characteristics and theoretic analysis between two electrodes are also discussed based on discharge waveform By using composite cooling liquid which has strong washing ability, the efficiency in the first stable cutting phase has reached more than 200 mm~2/min,and the roughness of the surface has reached Ra＜0.8μm after the fourth cutting with more than 50 mm~2/min average cutting efficiency.It is pointed out that cutting situation of the wire cut electrical discharge machine with high wire traveling speed（HSWEDM）is better than the wire cut electrical discharge machine with low wire traveling speed（LSWEDM）in the condition of improving the cooling liquid washing ability.The machining indices of HSWEDM will be increased remarkably by using the composite cooling liquid.