在电火花加工型腔模时,采用单电极平动头方式,用一只电极完成型腔的粗、精加工比较理想。但在实际使用中尚存在一些问題;因为平动头是作恒速运动,在精修长形型腔时,往往加工不很理想,为了说明问题,我们把长形型腔简化为一个长方形。假设长方形型腔各边深度相等,当进入精修阶段时,由于长边比短边长的多,所以长边的 In EDM cavity mold, the use of single-electrode translation head approach, with an electrode to complete the cavity rough, finishing is ideal. However, there are still some problems in actual use. Because the translation head is a constant speed motion, it is often not ideal to finish the elongated cavity. To illustrate the problem, we simplified the long cavity into a rectangle. Assuming that the depth of each side of the rectangular cavity is equal, when entering the finishing stage, since the long side is much longer than the short side, the long side