一、啮廓曲线谐波齿轮传动的理论齿廓是一种不能用初等数学描述的曲线,工艺上难以实现。为了便于制造和检测,必须采用一种工艺上易于实现的曲线作为工作齿廓以代替理论齿廓;两齿廓间的误差值控制在传动精度允许范围之内。目前,对于一般工艺水平,能满足此要求的齿廓有三角形齿廓和渐开线齿廓。 First, the profile curve Harmonic gear drive theoretical profile is a curve can not be described using elementary mathematics, the process is difficult to achieve. In order to facilitate the manufacture and testing, it is necessary to adopt a curve that is easy to be realized as a working tooth profile instead of the theoretical tooth profile; the error between the two tooth profiles is controlled within the allowable range of the driving accuracy. At present, for the general level of technology, can meet the requirements of the tooth profile with triangular tooth profile and involute profile.