细长轴是切削加工中,难度较大的一种零件。特别是长径比很大(l/D≥400)时,由于细长轴本身的刚性差,加工过程中受切削力、切削热、振动等影响,容易出现弯曲、竹节、锥度、棱形和腰鼓形等缺陷。我们在学习外地经验的基础上,改进了辅助工具的结构和刀具的角度,经过一段时间的反复实践,不断摸素,初步总结出一套加工细长轴的工艺方法:在尾座上装一套卡拉工具(图1)进行加工,成功地加工出φ3×1200～φ3×1500毫米的细长 Slender shaft is cutting, a more difficult part. Especially when the aspect ratio is very large (l / D≥400), bending, slubbing, tapering, and prism are likely to occur due to the poor rigidity of the slender shaft itself and the influence of cutting force, cutting heat and vibration during the processing And drum-shaped and other defects. On the basis of learning field experience, we improved the structure of auxiliary tools and the angle of knives. After repeated practice over a period of time, we continuously summed up a set of processing methods for slender shafts: installing a set of tailstocks Kara Tools (Figure 1) for processing, successfully processed φ3 × 1200 ~ φ3 × 1500 mm slender