Electrical Discharge Machining (EDM) Machine ToolIt is a type of machine tool equipment that uses the principle of electrical discharge to erode the surface of metals to process metal parts. Since the principle of electrical discharge machining differs from that of conventional metal cutting, EDM machines have structural differences compared to ordinary metal cutting machines. Firstly, it has a high-energy pulse power supply device to provide energy for generating electrical sparks, primarily functioning to produce repeated high-intensity electrical pulses between the tool electrode and the workpiece electrode to create discharge sparks. Secondly, during the electrical discharge machining process, the tool and workpiece do not make direct contact, and there is no significant cutting force, so EDM machines do not require a high-strength main drive system. However, to ensure a discharge gap of a few micrometers to several hundred micrometers between the electrodes, it employs a highly sensitive automatic gap adjustment device that can measure and adjust the gap automatically at any time.

The machine tool body includes the bed, column, spindle, and worktable, mainly used for clamping and adjusting the tool and workpiece. The machine tool body must have sufficient rigidity to prevent deformation during processing, which could alter the discharge gap and hinder machining. During the electrical discharge machining process, both the tool electrode and the workpiece are immersed in the working fluid. The main function of the working fluid is to compress the spark channel during discharge, allowing the current to concentrate in a small localized area; after discharge, it must quickly eliminate ionization and restore insulation to prevent arcing. The working fluid also cools the tool and workpiece. To promptly remove the erosion products from the electrode gap,Electrical Discharge Machining (EDM) Machine Toola working fluid circulation system is also equipped, utilizing forced circulation of the working fluid to accomplish this task.