摘要
基于60kg/m钢轨廓形的国家标准及其修复要求,通过计算反求了钢轨铣磨车用铣刀盘的理论截面轮廓;以圆弧形刀粒和方形刀粒进一步对该铣刀盘的理论截面轮廓进行了拟合,并提出了一种中间坐标系法来计算刀粒定位点,实现了刀粒坐标系与铣刀坐标系的坐标变换;以结构柔度最小为目标,采用有限元方法对该铣刀盘刀体进行结构拓扑优化。通过上述优化设计研究,得出了以下结论:经设计优化后,该铣刀盘不仅能够满足钢轨轮廓修复精度的要求,且重量减轻了27.51%,达到了轻量化的目的。
Based on the national standards about 60kg/m rail contour and its repair requirements, the theoretical section contour of milling cutter for rail milling machine was calculated by reversing and it was also fitted by circular blades and square blades. The intermediate coordinate system method was proposed to calculate the anchor points of the blade, and the coordinate transformation was realized between the blade coordinate and the milling cutter coordinate. Additionally, in order to minimize structural compliance, the structural topological optimization of the body was carried out by the finite element methods. Through the optimal design research,it is concluded that the milling cutter can not only meet the repair requirements, but also reduce 27.51% in weight, and realize the goal of the lightweight.
出处
《机械设计与制造》
北大核心
2016年第12期78-82,共5页
Machinery Design & Manufacture
基金
国家科技重大专项(2012ZX04003-081)
关键词
铣刀盘设计
坐标变换
拓扑优化
轻量化
Milling Cutter Design
Coordinate Transformation
Topology Optimization
Lightweight
