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四川读者张广明来信说,他们常遇到细长轴的加工,希望本刊介绍有关细长轴加工经验。细长轴在金属切削加工中是比较困难的,特别是长径比很大(L/D≥375)时,细长轴本身刚性差,加工过程中由于产生切削力、切削热、振动等因素,致使工件产生弯曲、竹节、棱形、腰鼓形和锥度等问题。在生产实践中,我们总结出一套加工细长轴的工艺方法。即在车床尾座上装一套如图1所示的夹具进行加工,成功地加工出φ3×1200～φ4×1500mm的细
Zhang Guangming, a Sichuan reader, wrote in a letter saying that they often encountered slender shaft machining and hoped that this magazine introduced their experience in slender shaft machining. Slender shaft in the metal cutting is more difficult, especially when the aspect ratio is large (L / D ≥ 375), the slender shaft itself poor rigidity, machining process due to cutting forces, cutting heat, vibration and other factors , Resulting in the workpiece bending, bamboo, prismatic, drum shape and taper problems. In production practice, we summarize a process for manufacturing slender shafts. That is, the tailstock of the lathe is equipped with a set of fixtures as shown in Fig. 1 for processing, successfully processing φ3 × 1200 ~ φ4 × 1500mm fine