摘要
双曲面麻花钻的后刀面刃磨参数及前刀面螺旋沟槽结构参数在很大程度上决定了其切削性能.以平面表像法为工具,建立了螺旋沟槽发生线为任意直线的双曲面麻花钻的主刃和横刃的切削角度计算模型.基于单元刀具线性综合法建立了钻削功率与刃磨参数及螺旋沟槽结构参数之间的关系模型,提出了以钻削功率最小为目标,应用约束遗传算法优化刃磨参数及螺旋沟槽结构参数的方法.与标准麻花钻相比,优化钻头的钻削功率平均降低了16.0%,扭矩平均降低了15.9%,轴向力平均降低了42.3%.
The hyperboloid drill grinding and helical groove design parameters have a great impact on its cutting performance.Based on the Planar Displaying Method,a computation model was developed to calculate the main edge and the chisel edge cutting angles of a hyperboloid drill with arbitrary straight helical groove occurrence.A relationship model between the grinding,helical groove design parameters and drilling power was developed in the light of the linear synthesis method of elementary cutting tools.To achieve minimum drilling power,a method was proposed to optimize the grinding and helical groove design parameters based on the restriction genetic algorithms.The results showed that the drilling power,the torque and the axial force of the optimized drill reduces 16.0%,15.9% and 42.3% respectively compared with the standard drill.
出处
《中国计量学院学报》
2013年第2期200-207,共8页
Journal of China Jiliang University
基金
国家自然科学基金资助项目(No.51075165)
关键词
双曲面
麻花钻
螺旋沟槽发生线
切削角度
钻削功率
hyperboloid
twist drill
helical groove occurrence
cutting angle
drilling power
