结合工程实践,基于Schmitz理论计算出风机叶片气动外形参数并利用三维坐标变换原理计算截面翼型空间分布位置,在此基础上,以大型三维设计软件UG为工作平台建立了叶片三维气动外形,并完全满足五轴数控加工制造要求,从而验证了该方法的可靠性。这一方法简化了复杂曲面的设计过程,提高了工作效率,为后续的数控加工、模具制作、结构设计及计算奠定了基础。 Combined with the engineering practice, the aerodynamic profile parameters of the fan blades were calculated based on the Schmitz theory and the spatial distribution of the cross-section airfoils was calculated by using the three-dimensional coordinate transformation principle. Based on this, the three-dimensional aerodynamic profile of the blade was established with the large three-dimensional design software UG Fully meet the five-axis CNC machining requirements, thus verifying the reliability of the method. This method simplifies the design process of complex surfaces and improves work efficiency, which lays the foundation for subsequent NC machining, mold making, structural design and calculation.