分析了一种冷冲模在用线切割方法加工型腔时发生开裂的原因，提出了防止开裂的措施。
Analyzes the causes of cracking that arised in a type of die under machining of die space with wire arc cutting. Suggests preventative methods of cracking.
为使复杂型腔能在加工中保证锥度及尺寸要求，必须以线切割机床的精度和可靠的编程方法为前提。
In order to ensure requirement of taper and size in machining complex mold cavity, it must depend on precision and reliable programming method of WEDM machine.
提出了确定嵌入式三维接口线切割轨迹的画法几何方法。
A descriptive geometry method is presented to obtain the track of wire incision in processing the three dimensional cut.
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