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为解决零件轮毂孔内呈180°对称分布的双键键槽的对称度误差的测量方法问题,在基于使用通用计量器具的测量条件下,根据形位误差测量评定中的最小条件准则,利用评定定位误差的定位最小包容区域的概念,采用几何方法分析了轮毂孔内双键键槽对称度误差的测量和计算方法,得到了2个在不同情况下计算轮毂孔内双键键槽对称度误差值的公式,讨论了了这些公式在实际应用中可能遇到的问题,利用这些公式可解决加工中轮毂孔双键键槽对称度误差的测量方法问题。
In order to solve the problem of the measurement method of the symmetry error of the double-keyed keyway which is symmetrically distributed 180 ° in the wheel hub hole, based on the minimum condition criterion in the evaluation of shape and position error based on the measurement conditions using common measuring instruments, The error is located in the minimum inclusive area of the concept of geometric methods used to analyze the wheel hub hole double keyway symmetry error measurement and calculation methods were obtained in two different cases of the wheel hub hole double keyway symmetry error value of the formula The problems that these formulas may encounter in practical application are discussed. These formulas can be used to solve the problem of measuring the symmetry error of the double keyway in the hub hole during machining.