Calculate the Common Normal Line´s Distance of Single Arc Gear Based on Secant Method

The measurement of single arc gear common normal line length, was a basic detection project, which aimed to control the tooth thickness. The method was to compute the common normal line length of two regular changes between the surface, the process is complex. With the single arc gear transmission development drive to high-speed, heavy-duty, high-power, the measurement face a higher demand, we not only needed to improve the existing measurement methods, calculation and measurement technology, but also strengthened the research of new test method. Just as it was, we provided a way used Secant method and put forward the calculating principle of the common normal line, the flow chart, the alternating equation. This method was based on the calculating principle and formula of the double arc gear´s driving and measuring common normal Line´s distance and made 67 arc gear as an example. It creased labor power firmly and the precision was also increased.