以刃边齿条为工具，测量廓面的直母线族误差，通过误差处理与分析获得齿廓总偏差和螺旋线总偏差。

Taking the straight-line-rack as the tool the error of straight generatrix is measured and by error analysis the tooth profile error and tooth orientation error can be obtained.

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采用刃边齿条测头，测量齿轮廓面的直母线偏差，通过误差分析分离出齿廓总偏差和螺旋线总偏差。

Adopting the engaging process of the measuring rack - probe, the error of straight generatrix is measured, and by error analysis, the tooth profile error and tooth orientation error can be obtained.

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