本文运用系统、相关和对比思维准则,将传动链误差、原始误差和工件加工误差进行相关性考察,把机床的四类内联传动链(分度链、螺纹链、差动链和展成链)视为一个系统,分析其误差的形成机理和误差传递规律,推导其数学模型。结果是四类表达式的结构相仿,都有波动性和趋向性两部分,为精确的误差分析,为简化误差信号处理提供了理论基础。 In this paper, the system, the correlation and the comparison of thinking guidelines, the transmission chain error, the original error and workpiece processing error correlation study, the four types of machine tool inline transmission chain (indexing chain, thread chain, ) As a system, analyze its formation mechanism of error and error transfer law, derive its mathematical model. The result is that the four types of expressions are similar in structure and both of them have volatility and tendency. They are accurate error analysis and provide a theoretical basis for simplifying the error signal processing.