一、概况我厂制造的精密航海仪器中,有些零件不论在形位公差或尺寸公差方面都有严格的要求,零件的几何形状和加工工艺非常复杂。“陀螺转子”(图1所示),便是其中之一。它是电罗经中的核心零件,形状复杂,精度高,属弹性薄壁型零件。其最大外径φ130毫米,最小轴颈φ2.2毫米,壁厚仅1.6毫米。各档径向、轴向的跳动允差0.005毫米,两端 I. Overview I plant precision navigation equipment, some parts in terms of shape and position tolerances or dimensional tolerances have strict requirements, parts geometry and processing technology is very complicated. “Gyro rotor ” (Figure 1), is one of them. It is the gyrocompass in the core parts, complex shape, high precision, is an elastic thin-walled parts. Its largest diameter φ130 mm, the smallest journal φ2.2 mm, wall thickness of only 1.6 mm. Each file radial, axial tolerance of 0.005 mm tolerance, both ends