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Study of on-line measuring technology of differential housing

机译:差动外壳在线测量技术研究

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Aiming at the issue on the automatic measurement of differential housing, an on-line measurement technology of the cylindricity is discussed. According to the geometrical tolerance requirement, a contact cylindricity measurement scheme was determined. Data of measured surface was obtained through the use of linear variable differential transformer (LVDT), the transformational relation between the voltage of sensor and the geometric coordinates of measured points was studied, using the least square method (LSM) to fit the cross-section circle of measured elements, the geometric model of the measured entities was reconstructed, the mathematical model of cylindricity error was built. Measurement software was designed to calculate and show the measurement results. Actual measuring experimental results demonstrated that the method can effectively measure the cylindricity error of the differential housing, as well as further improve the measure accuracy.
机译:针对差动外壳自动测量的问题,讨论了圆柱形的在线测量技术。根据几何公差要求,确定了接触圆柱测量方案。通过使用线性可变差分变压器(LVDT)获得测量表面的数据,使用最小二乘法(LSM)来研究传感器电压与测量点几何坐标之间的变换关系,以适合横截面测量元素圈,重建了测量实体的几何模型,构建了圆柱误差误差的数学模型。测量软件旨在计算和显示测量结果。实际测量实验结果表明该方法可以有效地测量差动外壳的圆柱误差,以及进一步提高测量精度。

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