矿用轴流通风机叶片三维几何模型反求重构  

3D geometric model reconstruction of mine axial fan blade using reverse engineering technology

作　　者：金永平[1] 刘德顺[1,2] 文泽军[1] 岳文辉[1] 

机构地区：[1]湖南科技大学先进矿山装备教育部工程中心,湘潭411201 [2]湖南科技大学知识处理与网络化制造湖南省普通高等学校重点实验室,湘潭411201

出　　处：《现代制造工程》2011年第11期24-27,共4页Modern Manufacturing Engineering

基　　金：国家自然科学基金资助项目(51075141);湖南省产学研结合技术创新工程计划项目(2010XK6066);湖南省自然科学省市联合基金重点项目(11JJ8005);湖南科技大学研究生创新基金资助项目(S090107)

摘　　要：通风机叶片形状是影响通风机气动性能的关键因素,为了引进和吸收先进的矿用轴流通风机叶片设计技术,采用反求技术对其三维几何模型进行反求重构。首先,根据通风机叶片设计特点规划测量路径,应用三坐标测量机(CMM)对矿用轴流通风机叶片表面曲面进行测量,提取通风机叶片表面曲面的三维点云数据。然后,在反求软件UG中,利用最小二乘拟合曲线检查法对所提取的点云数据进行异常点的剔除,运用弦高-夹角综合法进行点云数据的精简。最后,采用非均匀有理B样条(NURBS)对各截面数据点进行曲线拟合,并使用通过曲线组生成曲面的方法重构了矿用轴流通风机叶片的三维几何模型,这对矿用轴流通风机计算流体力学模拟和叶片优化设计具有重要意义。The blade shape of mine axial fan is the crucial influence factor on the aerodynamic performance of mine axial fan. In order to absorb and introduce the advanced design technology, reverse engineering was introduced to reconstruction the 3 D geometrical model of mine axial fan blade. Firstly, according to the characteristics of the mine axial fan blade design planning measurement path and the point cloud data of 3D geometrical surfaces of mine axial fan blade were obtained through measuring with a three-Coordinate Measuring Machine （CMM）. Secondly, the point cloud data were processed by using UG a software of reverse engineering,including eliminated the abnormal points, the data smoothing and the data simplification of the point cloud. Finally, the non-uniform B-spline curve was introduced to fitting the date points of every cross section. The 3D geometrical model of mine axial fan blade was reconstructed through the method of the curve generating surface. It is of important significance to the direction the optimization design and computational fluid dynamics simulation of mine axial fan.

关 键 词：矿用轴流通风机叶片 反求工程 三坐标测量 三维模型重构 

分 类 号：TD441.2[矿业工程—矿山机电]