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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. 通過分析活塞杆上斜孔的加工工藝、結搆特點，進行鑽孔夾具設計，文中著重闡述了夾具的工作過程，以及定位方案、夾緊方式、定位誤差和夾緊力的確定。