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我厂产品中有一种盲孔短油缸,其材料为20号钢锻件(见图1)。我们用粗车、浮镗、滚压法加工φ63~(+0.046)内孔,精度和光洁度均达到图纸要求。从我厂试生产和成批生产的经验,对操作工人的技术要求不高,效果比较理想,光洁度可稳定在8以上,尺寸精度可控制在0.02mm之内,产品质量稳定可靠。加工工艺(1)将毛坯加工成形,端面和内孔留0.5～1mm余量。(2)将工件夹持在三爪卡盘上,车端面及内孔,
I plant a blind hole short product cylinder, the material for the 20 steel forgings (see Figure 1). We use the rough car, float boring, rolling method of φ63 ~ (+0.046) bore, accuracy and finish have reached the drawing requirements. From our factory trial production and mass production experience, the technical requirements for the operation of workers is not high, the effect is ideal, the finish can be more than 8, the dimensional accuracy can be controlled within 0.02mm, stable and reliable product quality. Processing (1) the rough forming, leaving the end face and the hole 0.5 ~ 1mm margin. (2) the workpiece is clamped in the three jaw chuck, the car end surface and the hole,