电火花加工技术在模具制造中的加工应用（The application of EDM Technology in die manufacturing）.docVIP

电火花加工技术在模具制造中的加工应用（The application of EDM Technology in die manufacturing） The influence of die machining precision process factors involved in organic bed itself manufacturing precision, workpiece clamping precision, electrode manufacture and clamping precision, electrode loss, discharge gap, machining inclination etc., the electrode loss and discharge gap influence. 1, the influence of electrode loss on machining accuracy In the mold EDM process, pulse discharge will make the tool electrode by galvanic corrosion and loss, thus to understand and grasp the law of electrode loss and take various measures, to minimize the loss of tool electrode, which can ensure the mold with higher machining precision. EDM, different parts of the tool electrode loss situation is different, the electric field strength usually sharp corners, edges and projections of the high, easy to form the tip discharge, so the loss ratio of flat parts to be fast, uneven loss will inevitably lead to a decline in accuracy. The electrode loss is also affected by the thermal and physical constants of the electrode material. The higher the melting point, boiling point, specific heat capacity, melting and gasification latent heat of electrode materials, the greater the thermal conductivity, the better the corrosion resistance, the better the heat transfer ability, and thus the electrode loss can be reduced. 2, the impact of discharge gap on the machining accuracy EDM die, pulse discharge need to maintain a discharge gap between the tool electrode and the workpiece, and the processed workpiece hole size and electrode size compared to the contour along the processing by a discharge gap. The discharge gap mainly determines the machining stability, and the increase of the pulse gap time can improve the machining stability. Increasing peak current will increase productivity, but the electrode loss will increase. When the surface layer is deepened, the roughness will become larger. To make the discharge gap re