二次椭圆-偏心正圆活塞在车用活塞领域得到了越来越广泛的应用,但加工精度普遍较低.详细介绍了二次椭圆-偏心正圆活塞的形状特征,并建立二次椭圆-偏心正圆活塞的数学模型.为了提高此类活塞的加工精度,运用变截面螺旋线轨迹算法,在此基础上,通过MATlAb生成二次椭圆-偏心正圆活塞的加工轨迹点坐标.More and more piston that combination of elliptical part and eccentric circular used in vehicle,but the machining accuracy is generally low.This paper introduce the features of piston that combination of elliptical part and eccentric circular and build the mathematical model of piston that combination of elliptical part and eccentric circular.In order to improve the machining accuracy of this piston,we adopt the variable cross-section helix turning trajectory algorithm,then generate the machining trajectory point coordinates of piston that combination of elliptical part and eccentric circular by MATLAB.国家自然科学基金(51275433;51075343
