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《探矿工程》1986年第1期所载的“有关牙顶宽和牙底宽的尺寸链分析”一文对地质岩心钻探管材螺纹牙型参数组成的尺寸链进行理论分析。在制订DZ1.1～1.3-84三项《地质岩心钻探管材螺纹》标准前，由于对这种特殊梯形螺纹牙顶宽及其公差没有一个确切的定义，所以有不同的理解。一种认为牙顶宽是单一尺寸，它的公差和牙高、螺距、牙型半角等牙型参数的公差没有包容关系；另一种认为各牙型参数公差要遵守相关原则，牙顶宽公差包容了牙高、螺距、牙型半角误差所形成的需要补偿的牙顶宽当量。通过尺寸链分析，明确了各牙型参数及公差之间的关系，从而确定了牙顶宽公差的相关原则，为制订螺纹标准起了积
The article “Dimensional Chain Analysis on Tooth Width and Tooth Width” contained in “Prospecting Project”, No. 1, 1986, makes a theoretical analysis of the dimensional chain composed of the parameters of the geological thread drilling pipe thread profile. There are different interpretations of the three “geological core drilling pipe thread” standards prior to establishing the DZ1.1-1.3-84 standard because there is no definitive definition of the width and tolerance of this special trapezoidal thread. One is that the tooth top width is a single size, its tolerance and tooth height, pitch, tooth half angle and other dental parameters tolerance is not inclusive; the other that each tooth profile parameters to comply with tolerances, tooth top width tolerance Including the tooth height, pitch, tooth half-angle error formed by the need to compensate the tooth top width equivalent. Through the analysis of the dimension chain, the relationship between the parameters and tolerances of each tooth type is clarified so as to determine the relative principle of the tooth top width tolerance.