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Based on the analysis of the processing technic and configuration feature of angle hole of piston rod, the author gives a design of drilling jig. 通过分析活塞杆上斜孔的加工工艺、结构特点，进行钻孔夹具设计，文中着重阐述了夹具的工作过程，以及定位方案、夹紧方式、定位误差和夹紧力的确定。