挠性杆(见图1)是挠性加速度计的研制关键。零件尺寸小,精度高,加工难度大。我们是用镗、研磨进行加工。镗削加工后零件光洁度达10,经研磨后达11,几何形状较好,合格率约在80～90％左右,满足了设计要求。挠性杆零件采用的材料是铍青铜丝材,牌号为QBe1.9。 一、工艺流程 Flexible rod (see Figure 1) is the key to the development of flexible accelerometer. Small parts size, high precision, processing difficult. We use boring, grinding for processing. After boring parts finish of 10, after grinding up to 11, the geometry is better, the pass rate of about 80 to 90%, to meet the design requirements. The material of the flexible rod parts is beryllium bronze wire, grade QBe1.9. First, the process