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介绍了ＤＰＤＴ－Ⅰ和ＤＰＤＴ－Ⅱ型电火花三座标同时伺服平动头上采用的４５°斜滑轨调偏心、主轴电定位、型腔尺寸自适应控制等技术以及平动加工工艺，使电火花加工型腔模的精度、效率提到一个新水平，扩大了电火花加工的适用范围。
The technologies of 45 ° inclined track alignment eccentricity, spindle positioning and cavity size adaptive control adopted by DPDT-Ⅰ and DPDT-Ⅱ type electric spark three coordinate simultaneous servo translation heads are introduced, and the translational machining technology is introduced. EDM cavity mold accuracy, efficiency referred to a new level, expanding the scope of the EDM.