基于逆向工程的谷粒三维模型的构建
李骅;尹文庆;高翔;刘雨
【期刊名称】《西北农林科技大学学报（自然科学版）》 【年(卷),期】2011(039)012
【摘要】【目的】构建谷粒的三维模型,为更加精确地分析谷粒在介质中的力学特性及运动规律提供参考。【方法】运用逆向工程理论,使用三坐标测量机获得谷粒的点云数据,导入Pro/E中进行数据处理,采用NURBS方法重构曲线,最后生成谷粒实体,得到谷粒的三维模型。【结果】重构稻谷谷粒三维模型与实物的对比结果表明,其三轴尺寸及体积误差均在5%以内。【结论】构建的稻谷谷粒三维模型在稻谷清选、分级和输送过程的力学与运动学分析中具有重要的应用价值。%【Objective】 In order to analyze the mechanics characteristics and the law of motion between grain and mechanism more precisely,the three-dimensional model of grain was constructed.【Method】 Using reverse engineering theory,the point cloud data of grain which were measured with three coordinate measuring system were imported in Pro/E and processed,and using NURBS to reconstruct curve,lastly the entity was generated,and the three-dimensional model was got.【Result】 Comparing the three-dimensional reconstruction model of rice grain with the material object,it showed that their three-axis size errors and the volume error were less than 5%.【Conclusion】 The model has an important application value of mechanics and kinematics analysis in rice grain cleaning,grading and transporting.
基于逆向工程的谷粒三维模型的构建
