锻造图纸中的符号（二）

锻造图纸中的符号（二）

Position Tolerance - defines a zone within which the axis or center plane of a feature is permitted to vary from true (theoretically exact) position.

—位置公差:定义一个区域内的轴或中心平面的一个特点是允许不同的真正的(理论上)位置

Concentricity - describes a condition in which two or more features , in any combination, have a common axis.

—同心度:描述在其中一个条件的2个或更多的功能，在任何组合，有一个共同的旋转轴

Symmetry - is a condition in which a feature (or features) is symmetrically disposed about the center plane of a datum feature.

—对称度:是一种状况，其中一个功能（或功能）是处理有关对称中心平面基准特征

Runout - is the composite deviation from the desired form of a part surface of revolution through on full rotation (360 deg) of the part on a datum axis.

—跳动:是复合偏离理想形式的一部分表面上通过革命旋转（360度）的一部分，在基准轴

Total Runout - is the simultaneous composite control of all elements of a surface at all circular and profile measuring positions as the part is rotated through 360.

—全跳动:是同时复合控制所有表面元素在所有圆轮廓测量位置的部分是通过旋转360

Maximum Material Condition (MMC) - is that condition of a part feature wherein it contains the maximum amount of
material within the stated limits of size. That is: minimum hole size and maximum shaft size.

—材料状态:是条件的一部分功能其中包含的金额材料在规定的极限尺寸。那就是：最小孔尺寸和轴尺寸

Least Material Condition (LMC) - implies that condition of a part feature of size wherein it contains the least (minimum) amount of material, examples, largest hole size and smallest shaft size. It is opposite to maximum material condition.

—最小材料状态:意味着条件的一部分功能的大小，其中也包含了最小（）的材料，例子，孔尺寸和最小轴径。它的对面是材料状态。

Regardless Of Feature Size (RFS) - the condition where the tolerance of form, runout or location must be met irrespective of where the feature lies within its size tolerance.

—不论大小的特征:不论大小的特征的情况下，形状公差，跳动或位置必须满足，不论在哪里，它的特点是在其尺寸公差