基于CAD/CAM的舰船螺旋桨精度控制技术研究

Research on precision control technology of ship propeller based on CAD/CAM

为解决船舶螺旋桨内部角动量不平衡、精准解耦能力较弱等问题,提出基于CAD/CAM的船舶螺旋桨精度控制方法。通过控制轴系确定、定点坐标变换2个步骤,完成船舶螺旋桨结构的CAD/CAM建模。在此基础上,通过铣削方式与加工路径分析、残余精度量计算、微小控制误差确定3个步骤,完成新型精度控制方法的搭建,实现基于CAD/CAM的船舶螺旋桨精度控制技术研究。对比实验结果表明,与传统控制方法相比,应用新型精度控制方法后,船舶螺旋桨内部角动量呈现明显的平衡状态,精准解耦能力最大值可达到70%。

In order to solve the problems of imbalance of angular momentum and weak precision decoupling ability in ship propeller, a method of accuracy control for ship propeller based on CAD/CAM is proposed. The CAD/CAM modeling of ship propeller structure is completed by two steps: the determination of control shafting and the transformation of fixedpoint coordinates. On this basis, a new precision control method is built by three steps: milling mode and machining path analysis, residual precision calculation and micro-control error determination, and the research of ship propeller precision control technology based on CAD/CAM is realized. The experimental results show that compared with the traditional control method, the angular momentum of the ship propeller is obviously balanced and the maximum precision decoupling ability can reach 70%.