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一、问量的提出在我们生产实践中,遇到了如图1所示“C=5%通气支架”(以下简称“支架”)工件。在变截面壁厚为9～12毫米的中间,有两个矩形深孔,其孔的尺寸(长×宽×深)分别为17.68×65×59.94和42.43×6×540.56毫米。设计要求采用电火花加工,而我们最大的电火花加工设备是D6165型电火花穿孔机床,要在此机床上打如此深的孔,困难在于工件在加工位置时的高度,远远超出机床加工范围;且孔小而深,加工较为困难。
First, the question raised In our production practice, encountered as shown in Figure 1 “C = 5% ventilation bracket” (hereinafter referred to as “bracket”) workpiece. In the middle of the variable cross-section wall thickness of 9-12 mm, there are two rectangular deep holes whose hole sizes (length × width × depth) are 17.68 × 65 × 59.94 and 42.43 × 6 × 540.56 mm, respectively. Design requirements using EDM, and our largest EDM equipment is D6165 EDM machine, to punch such a deep hole in this machine, the difficulty lies in the workpiece in the processing position of the height, far beyond the scope of machining ; And the hole is small and deep, processing more difficult.