This paper studies meaning, primary characteristic and sort of machine work mechanism.Presents decompose method and decomposing step.Forms machine work mechanism into technical act process finally.

• 本文研究了机器工作机理的内容、主要特征、类别，提出了机器工作机理分解方法和分解步骤，将机器工作机理最终构建为一个工艺动作过程。