动平衡计算在长曲轴车削时的应用

Application of Dynamic Balance Calculation to Long Crankshaft Turn

在普通车床上利用偏心夹具车削长曲轴曲柄径时 ,由于离心惯性力的影响 ,使曲轴的加工精度和表面质量降低。为了解决这一问题 ,文章分析了长曲轴曲柄径向车削时动平衡计算的必要性 ,并以一个实例简单阐述了长曲轴曲柄径车削时动平衡计算的方法。根据计算结果 ,在夹具的平衡校正面各加上适当的平衡重量 ,就可以减少由于离心惯性力而引起的工艺系统变形和振动 ,从而提高长曲轴的加工精度和表面质量。

The centrifuga inertia reduced machining accuracy and surface quality, when cut the duration of side-centering in the engine lathe. In order to resolve the problem, this article analyzed the necessity of planning dynamic balance for the duration of long crankshaft turn, and elaborated methods of dynamic balance consideration for the duration of long crankshaft turn by an example. On the basis of calculation, the balance of adjustable surfaces were loaded the proper balance weight that reduced the deformation and vibration due to centrifugal inertia,therefore improved long crankshaft turn's machining accuracy and surface quality.