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本文所述的立面孔是指在制件的上、下面与侧面上有一个封闭的孔型。50、21、134离合器壳就是此例(见图1),切去的立面孔原形见图2。该制件的特点是:制件侧面高度大、切去部分径向尺寸小、侧壁较厚。常规工艺该孔是采用划线铣削加工。机械加工虽然切断面质量好,但效率低、用成本高。采用冲压工艺按照理想的冲裁方向(图3)实际上是难以实现的(无论是设备还是模具)。由于该制件的立面孔仅为通过搬手调整螺母之用,所
The facade holes described herein refer to a closed hole pattern on the upper, lower, and side surfaces of the article. 50,21,134 clutch case is the case (see Figure 1), cut the vertical hole prototype shown in Figure 2. The parts are characterized by: the height of the side of the workpiece, the cut-off part of the radial size of small, thick side walls. Conventional process The hole is crossed with the milling process. Although the machined cutting surface of good quality, but low efficiency, high cost. The use of stamping technology in accordance with the ideal direction of blanking (Figure 3) is actually difficult to achieve (either equipment or mold). Because the parts of the facade hole is only used to adjust the nut by hand, so