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介绍利用坐标变换原理建立双桨行星立式混合机桨叶运动轨迹数学模型的方法及利用计算机绘制桨叶运动轨迹的技术，并以该数学模型分析了空心桨叶棱边与锅壁最小间隙的分布规律，同时分析了公转和自转变比不同时，桨叶和锅壁间死区对被混物料混合效果的影响
The paper introduces the method of establishing the mathematical model of blade motion trajectory of dual-blade planetary mixer by coordinate transformation principle and the technology of drawing the motion trajectory of blade by computer. The mathematical model is used to analyze the minimum clearance of hollow blade edge and pot wall The distribution law and the influence of the dead zone between the blade and the pot wall on the mixed effect of the mixed materials are analyzed when the revolution and the rotation ratio are different