In this paper calculating method of lead angle of helical gear by measuring span length of length bar and base tangent length is put forward and lead angle calculating formula is deducel.
分析齿轮主要参数，提出用测量跨棒（）和公法线长度计算斜齿圆柱齿轮螺旋角的测绘方法，并推导出螺旋角的计算公式。
Input layer is respectively the displacement and speed of car, the Angle and Angle speed between pendulum bar and vertical line.
输入层分别为小车的位移和速度、摆杆偏离铅垂线的角度和角速度。
Then the locus curves of one point in the geared five-bar were studied with the change of the gear ratio, the phase Angle, the bar length and the Angle between two bars.
然后，针对能够整周转动的齿轮—五杆机构，研究了其上的一点在齿轮机构的传动比、初始相位角、杆长以及两杆之间的夹角变化时的轨迹曲线以及速度和加速度曲线的情况。
Then the locus curves of one point in the geared five-bar were studied with the change of the gear ratio, the phase Angle, the bar length and the Angle between two bars.
然后，针对能够整周转动的齿轮—五杆机构，研究了其上的一点在齿轮机构的传动比、初始相位角、杆长以及两杆之间的夹角变化时的轨迹曲线以及速度和加速度曲线的情况。
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