The profile error of gears is the main factor of gear transmission noise.

齿轮的齿形误差是影响齿轮传动噪声的主要因素。

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In addition, the CAD system includes some more utility modules, such as module of gear calculation of error of gear profile, module of gear measurement, module of looking up nation standard of gear.

另外，在齿轮CAD系统中还设计了齿廓误差计算、齿轮测绘及齿轮国家标准查询等一些具有较大实用价值的模块。

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The new method without movement paralleled with the axis of the gear makes the lead error measurement can share same generating system with profile measurement.

此方法不需要测头沿齿轮轴线方向的运动系统，利用齿形测量系统即可测量齿向误差。

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