基于通用量具的轮毂孔双键键槽对称度误差的测量方法  

Measurement Method for Symmetry Error of Double Keyway in Wheel Hub Bore Based on Universal Measuring Instrument

作　　者：赵小明[1] 谢江[1] 娄晨辉[1] 

机构地区：[1]河北科技大学机械电子工程学院,石家庄050018

出　　处：《煤矿机械》2011年第7期110-113,共4页Coal Mine Machinery

摘　　要：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。A new measurement method is presented.This method is to test the symmetry error of double keyway distributed evenly in a wheel hub bore based on using universal measuring instrument.According to the minimum condition criterion of form and position error evaluation,and making use of the minimum tolerance zone of position error evaluation,two symmetry error formulas of double keyway in a wheel hub bore are deduced by geometric analysis.The problems may be encountered when using the formulas in the practical application are discussed.These formulas solve the measurement principle problem of double keyway in the engineering practice.

关 键 词：轮毂孔 双键键槽对称度 定位最小包容区域 误差计算公式 

分 类 号：TG801.3[金属学及工艺—公差测量技术]