The design of die structure has much influence on shape dimension and precision of the formed crank-arm with a nonelliptical section.
对于非椭圆截面曲臂的大型曲轴，其模具结构设计对曲轴成形后的形状尺寸精度影响极大。
2
The dynamics model of non-sinusoidal vibration system of crystallization utensil driven by elliptical gears was established, and its dynamics equation was derived.
建立了椭圆齿轮驱动的结晶器非正弦振动系统动力学模型，推导了动力学方程。
3
Being directed against elliptical gear drive a kind of non-zero modification method has been advanced.