用DF系统深孔钻加工热压板深孔试验成功后,认识到DF系统深孔钻是高效率、质量好又有发展前途的深孔钻。尤其是对难加工材料及小直径的深孔加工效果更显著。接着对Φ13·2毫米高强度钢18MnMoNiNb进行深孔试验。这个深孔要求光洁度不低予▽5,孔的尺寸精度为-0.05毫米,直线性偏差不大于0.2/1000毫米,椭圆度及锥度应在尺寸公差范围内。 DF hole deep hole deep hole processing hot plate deep hole test after the successful realization of the DF system is a high-efficiency deep hole drilling, good quality and promising development of deep-hole drilling. Especially for difficult to machine materials and small diameter deep hole processing effect is more significant. Next, a deep hole test was carried out on the Φ13 · 2mm high strength steel 18MnMoNiNb. This deep hole is required to finish not low to ▽ 5, hole size accuracy of -0.05 mm, linearity deviation of not more than 0.2 / 1000 mm, ovality and taper should be within the size tolerance.