定向公差带数学定义理论及应用的研究

THEORY AND APPLICATION OF MATHEMATICAL DEFINITION FOR ORIENTATION TOLERANCE ZONE

在ANSI Y 14．5．1M-1994的定向公差数学定义的基础上，提出隐含基准的概念，采用点集的形式用矢量方程严格定义国标中各定向公差带；将度量几何学中的运动理论与定向公差的数学定义理论相结合，给出适合于计算机表达、处理以及在各阶段数据传递的严格公差数学定义方式。

Based on the mathematical definition of orientation tolerance in ANSI Y14.5.1M-1994,the notation of hint datum is pointed out and orientation tolerance zone of national standard is defined strictly with point -set vector equation. Kinematics theory in measurement geometry and mathematic definition theory is combined. And then develop a strict mathematical definition method,which is adapted to be expressed,processed and data transfer with computers.