FIELD: process engineering.
SUBSTANCE: invention relates to spark erosion processing. Wire EDM machine is controlled by NC unit. It includes common power supply unit, working current pulse generator and current collectors connected to cutting wire active section start and end. Nuts to displace processed part relative to machine stationary part in axes X, Y, Z, U and W, cutting wire winder and tensioner. Cooling system unit supports temperature mode in cutting zone. Check elements connected with NC unit are arranged at output of all above listed units. Besides, it incorporates control element composed by electronic voltmeter with input connected to coaxial cable conductor feeding working current from working current pulse generator to cutting wire at the point of contact between said conductor and cutting wire, voltmeter output being connected to NC unit.
EFFECT: ruled out electric faults in coaxial cable circuit, higher efficiency and quality of EDM cutting.
1 dwg
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