Gear machining accuracy grade and its determination instructions

3. Three aspects of gear accuracy grade:

1. The accuracy grade of a single gear:

对于分度圆直径从5至10000mm、模数(法向模数)从0.5至70mm、齿宽从4至1000mm的单个Involute cylindrical gear的11项同侧齿面偏差，GB/T10095.1规定了0.1、2、…12共13个精度等级。其中，0级最高，12级最低。

2. Radial runout:

对于分度圆直径从5到10000mm、模数(法向模数)从0.5到70mm的渐开线圆柱齿轮的径向跳动，GB/T10095.2在附录B中推荐了0、1、...12共13个精度等级。其中0级最高，12级最低。

The tolerance of radial composite deviation does not apply to two productsgearThe inspection is only applicable to the mesh inspection of the product gear and the measuring gear.

3. Radial comprehensive deviation:

对于分度圆直径从5到1000mm、模数(法向模数)从0.2到10mm的渐开线圆柱齿轮的径向综合偏差F"i和一齿径向综合偏差f"i，GB/T10095.2规定了4、5...12共9个精度等级。其中，4级最高，12级最低。

XNUMX. Determination of gear machining accuracy grade:

1. When designing, the radial comprehensive deviation and the radial runout are the same as the element deviations in GB/T10095.1 (such as tooth pitch, tooth profile, helix, etc.).

2. When the document needs to describe the gear accuracy requirements, GB/T10095.1 or GB/T10095.2.

3. Calculation method or empirical method (table method) can be used to determine the accuracy level of gears.