关键词: 中心线误差；回零；随机误差；偏移；总误差

Abstract: The conventional measurement methods of cylindrical gear include macroscopic measurement such as common normal line, span bar distance, and microscopic measurement such as tooth shape, tooth direction and cumulative error detection by using gear detection center. This paper analyzes the random errors in the measurement results of Gleason MM measuring instrument, the effects of the actual measurement instrument parameter setting, the type of workpiece to be measured, workpiece clamping and related factors on the results, identifies the core influencing factors, and finds effective solutions to provide a basis for the process research institute to optimize the production process as soon as possible. It also provides an effective identification method for detection technicians to identify and eliminate random errors and issue effective and reliable detection reports.

Key words: Centerline error; Return to zero; Random errors; Offset; Total errors