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细长轴零件的加工是比较困难的,而精密细长轴零件的加工更为困难。我厂有一项零件如图1,以前采用的加工路线和方法是:（1）下料φ10 ×352毫米;（2）无心磨磨外圆至φ9.05±0.03毫米;（3）车床平两端面并打中心孔;（4）顶车外圆φ4毫米;（5）普通车床顶持旋转,用砂纸擦外圆。目的:消除由于零件细长,在无心磨磨外圆时产生的几何形状误差;（6）手握涂有研磨剂的铸铁研磨套在车床上研磨。这种加工方法效率低,质量差,工人劳动强度大。而且,为满足不同余量的研磨,要按不同外径尺寸配制很多研磨套,不适于成批生产。
Slender shaft parts are more difficult to machine, while precision slender shaft parts are more difficult to machine. I plant a part shown in Figure 1, the processing routes and methods used in the past are: (1) cutting φ10 × 352 mm; (2) Centerless grinding mill to φ9.05 ± 0.03 mm; (3) Face and hit the center hole; (4) the top circle φ4 mm; (5) ordinary lathe top holding rotation, rub with a sandpaper outside. Purpose: To eliminate the geometric errors caused by inadvertent abrasion of the outer circle due to the slender part. (6) Grind on the lathe with a grinding iron coated with abrasive. This method of processing low efficiency, poor quality, labor-intensive workers. Moreover, in order to meet the grinding of different margins, according to different diameter size preparation of a lot of grinding sets, not suitable for mass production.