螺旋桨叶片双面协同加工刀路规划
Tool Path Planning of Double-Sided Collaborative Machining for Propeller Blades
王瑞 1葛昱昊 1郭祥雨2
作者信息
- 1. 哈尔滨工业大学(威海)海洋工程学院,威海 264209
- 2. 哈尔滨工业大学机电工程学院,哈尔滨 150006
- 折叠
摘要
双面对称加工通过两侧辅助支撑可解决螺旋桨叶片单面加工中存在的加工振颤、变形等问题,但桨叶复杂的表面形状导致双面对称加工无法完全实现,因此提出一种双面协同加工方法,并对其刀路规划算法展开研究.该算法通过引入两个区域划分参数将桨叶表面划分为叶梢区域、内部区域、变速区域和边缘区域4 个区域,对不同区域分别采用单面加工、对称加工、变速错位加工和无变速错位加工4 种加工方式,并借助 6 个关键加工点对双面协同加工流程进行规划设计.在变速区域通过Sigmoid组合变速曲线实现单侧刀具的S型变速,进而完成对称加工与错位加工的方式转换.最终通过加工实验得到对比数据,结果表明双面协同加工在振动与变形问题上皆有较大提升,验证了该方法的可行性和有效性.
Abstract
Double-sided symmetrical machining can solve problems such as machining vibration and de-formation in single-sided machining of propeller blades through auxiliary support on both sides.However,the complex surface shape of the blades makes it impossible to fully achieve double sided symmetrical ma-chining.Therefore,a double-sided collaborative machining method is proposed in this paper,and its tool path planning algorithm is investigated.The algorithm divides the blade surface into four regions by introdu-cing two partition parameters:tip region,internal region,variable region,and edge region.Four machining methods are used for different regions:single-sided machining,symmetrical machining,variable misplace-ment machining,and non-variable misplacement machining.Six key processing points are used to plan and design the double-sided collaborative processing process.In the variable region,the S-type speed change of single-sided tool is achieved through Sigmoid speed change curve,then the conversion between the symmet-rical machining and the misplacement machining is accomplished.Finally,comparative data was obtained through machining experiments,which showed that double-sided collaborative machining had significant improvements in vibration and deformation issues,verifying the feasibility and effectiveness of this method.
关键词
螺旋桨/双面加工/刀路规划/Sigmoid曲线/S型变速Key words
propeller/double-sided machining/tool path planning/Sigmoid curve/S-type speed change引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据