蜗轮副, 检查仪, 脉冲信号二次插补, 传动误差

In order to realize high-precision verification of a worm gear’s transmission quality, a new examination instrument of worm gear pair was developed. The paper adopted the principles combining the traditional TE testing theory by digital counting and secondary subdivision of pulse signals,integrating the new electronics technology such as field programmable gate array(FPGA),to ensure the high-precision and advancement of the instrument. Analysis of the main error source of the instrument was carried out.According to the national standard of worm gear pair，the instrument can be applied to detect the high-precision worm gear pair over 5-level accuracy.