Method for measuring diameter of small end of conical inner ring by using double steel balls

The invention discloses a method for measuring the diameter of a small end of a conical inner ring by using double steel balls, belongs to the technical field of bearing size measurement, and aims to solve the problem that an operator cannot measure the size of the small end of the conical inner ring on a processing station. The diameter of the small end of the conical inner ring is measured by combining a common horizontal length measuring instrument and a Marl high-precision 1-meter length measuring instrument or a sine instrument in a machining station, the position relation between the radius of the steel ball and the diameter needing to be measured can be found through the tools, and mathematical transformation is conducted through the measured parameters to obtain a target measured value. The method is mainly used for measuring the diameter of the small end of the conical inner ring serving as a standard contrast piece in a machining station. 一种利用双钢球测量圆锥内圈小头直径的方法，属于轴承尺寸测量技术领域，本发明为了解决在加工工位上操作人员无法对圆锥内圈小头尺