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本文提及的圆锥螺纹,其牙型系指通过螺纹的轴线截面上,螺距必须平行螺纹轴线,牙型角之等分线与螺纹轴线垂直.众所周知,圆锥螺纹的中径,在同螺纹轴线垂直的各个截面上量得的尺寸是各不相同的.因此,锥度螺纹中径的测量,规定在与螺纹小头端面(或大头端面)有一定距离(以下简称基距)的截面上进行的,故称之为基面中径,以符号d_2表示.有关锥度螺纹中径的测量方法,在不少资料中已有介绍.兹将笔者在实践中对较小尺
As used herein, a tapered thread refers to a section of the thread passing through the axis of the thread, the pitch of which must be parallel to the axis of the thread, and the bisector of the corner of the thread is perpendicular to the axis of the thread.It is well known that the diameter of a tapered thread, The measurement of the diameter of the taper thread is made on the section with a certain distance (hereinafter referred to as the base distance) from the end face of the screw head (or the head end face) It is called the diameter of the base surface, the symbol d_2 said.About the taper thread diameter measurement method, a lot of information has been introduced.I will be in the practice of the smaller foot