冷轧管机新型非圆齿轮传动系统研发及运动学分析

R&D and kinematic analysis of the cold-rolling mill’s new non-circular gear transmission system

采用非圆齿轮变传动比特性,开发了冷轧管机新型传动系统,减小了传统轧机曲柄滑块机构由于曲轴偏心转动带来的惯性冲击和振动。根据LG730冷轧管机的工艺特性,采用非圆齿轮与差动轮系组合实现稳定轧制,并探讨了满足特定要求的非圆齿轮节曲线的设计方法和建模方法。对新型传动系统进行了动力学分析,研究了工作机架的位移、速度和加速度变化规律,搭建了非圆齿轮传动系统实物模型,验证了新型传动系统的可行性。

With the non-circular gear’s characteristics of variable transmission ratio taken into account,a new transmission system suitable for the cold-rolling mill is developed,which reduces the inertia impact and vibration caused by the eccentric rotation of the traditional rolling mill’s crank slider mechanism. According to the technical characteristics of the LG730 coldrolling mill,the non-circular gear and differential gear train are combined for stable rolling;the design and modeling of the noncircular gear joint curve are identified,so as to meet the specific requirements. The dynamic analysis is conducted on the new transmission system,in order to explore the changing laws of the working frame’s displacement,speed and acceleration;the physical model of the non-circular gear transmission system is set up,which proves that the new transmission system is feasible.