Electrical discharge apparatus

An electrical discharge apparatus for machining a workpiece, the electrical discharge apparatus comprising:

• an electrode;
• means for supplying working electric power to a gap between the workpiece and the electrode provided in a working fluid;
• a lubricant supplying unit for supplying a lubricant to a mechanically driven part;
• a lubricant-remaining-amount monitoring unit having a function of detecting an abnormality in a remaining amount of the lubricant in said lubricant supplying unit or the remaining amount of the lubricant therein, and outputting the same to a controller;
• and
• a lubricant-supplying-unit operation monitoring unit having a function of detecting an abnormality of said lubricant supplying unit, and outputting the same to said controller,
• wherein there is provided means for stopping machining after an executing program finishes executing, in at least any one of a first case in which the abnormality in the remaining amount of the lubricant in said lubricant supplying unit has been detected by said lubricant remaining-amount monitoring unit, a second case in which the remaining amount of the lubricant detected by said lubricant-remaining-amount monitoring unit is at a prescribed value or below, and a third case in which the abnormality of said lubricant supplying unit has been detected by said lubricant-supplying-unit operation monitoring unit.

An electrical discharge apparatus for machining a workpiece comprising:

• an electrode;
• means for supplying working electric power to a gap between the workpiece and the electrode provided in a working fluid;
• a lubricant supplying unit for supplying a lubricant to a mechanically driven part;
• a lubricant-remaining-amount monitoring unit having a function of detecting an abnormality in a remaining amount of the lubricant in said lubricant supplying unit or the remaining amount of the lubricant therein, and outputting the same to a controller;
• and
• a lubricant-supplying-unit operation monitoring unit having a function of detecting an abnormality of said lubricant supplying unit, and outputting the same to said controller,
• wherein there is provided means for stopping machining after an executing program continues executing within a fixed time duration, in at least any one of a first case in which the abnormality in the remaining amount of the lubricant in said supplying unit has been detected by said lubricant-remaining-amount monitoring unit, a second case in which the remaining amount of the lubricant detected by said lubricant-remaining-amount monitoring unit is set at a prescribed value or below, and a third case in which the abnormality of said lubricant supplying unit has been detected by said lubricant-supplying-unit operation monitoring unit.

An electrical discharge apparatus for machining a workpiece, the electrical discharge comprising:

• an electrode;
• means for supplying working electric power to a gap between the workpiece and the electrode provided in a working fluid;
• a lubricant supplying unit for supplying a lubricant to a mechanically driven part;
• a lubricant-remaining-amount monitoring unit having a function of detecting an abnormality in a remaining amount of the lubricant in said lubricant supplying unit or the remaining amount of the lubricant therein, and outputting the same to a controller;
• and
• a lubricant-supplying-unit operation monitoring unit having a function of detecting an abnormality of said lubricant supplying unit, and outputting the same to said controller,
• wherein there is provided means for allowing a program, other than one for performing a machining operation, to be executable, in at least any one of a first case in which the abnormality in the remaining amount of the lubricant in said lubricant supplying unit has been detected by said lubricant-remaining-amount monitoring unit, a second case in which the remaining amount of the lubricant detected by said lubricant-remaining-amount monitoring unit is at a prescribed value or below, and a third case in which the abnormality of said lubricant supplying unit has been detected by said lubricant-supplying-unit operation monitoring unit.