摘要
为了给叶片专用加工软件提供可用的叶片基础模型,开发了基于特征的叶片参数化设计软件.针对汽轮机叶片的结构特点,将叶片分为叶根、根面、叶冠、冠面和叶身5个特征,而叶身又可以分成背弧曲面、进汽边圆弧曲面、内弧曲面和出汽边圆弧曲面4个特征.软件可根据用户输入的叶片参数,对各个特征分别造型,生成可用于开发叶片专用加工软件的叶片三维模型.仿真结果表明:用该方法生成的叶片模型,可分别对叶身的不同部分赋以不同的切削速度和进给量,从而避免过切.基于特征的叶片参数化模型可为叶片加工提供实用的基础模型.
In order to provide a usable blade model for special machining software of a blade,a parametric blade design software is developed based on the features.According to the characteristic of a turbine blade,the blade is divided into five master features：blade-root,root-surface,blade-coronal,coronal-surface and blade-body,while blade-body is divided into four child features：surface of back arc,circular arc surface of stream coming in,surface of inner arc and circular arc surface of stream coming out.3D model of the turbine blade based on features can be generated automatically by the system with blade parameters input by users.The results of machining simulation show that different cutting speeds and cutting steps can be given for different parts of the blade-body and overcut can be avoided.The paramatic blade model based on features can provide a practical base model for a blade machining software.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2010年第5期746-750,共5页
Journal of Harbin Institute of Technology
基金
黑龙江省博士后科研启动基金资助项目
关键词
汽轮机叶片
特征
参数化
软件
turbine blade
feature
parametric
software
