• CN:11-2187/TH
  • ISSN:0577-6686

›› 2011, Vol. 47 ›› Issue (3): 174-178.

• 论文 • 上一篇    下一篇



  1. 中国工程物理研究院等离子体物理重点实验室;哈尔滨工业大学精密工程研究所
  • 发布日期:2011-02-05

Analysis and Optimization on Prediction Model of Surface Roughness for Mandrels in Meso-scale

HUANG Yanhua;DONG Shen   

  1. Science and Technology on Plasma Physics Laboratory, China Academy of Engineering Physics Precision Engineering Research Institute, Harbin Institute of Technology
  • Published:2011-02-05

摘要: 为控制惯性约束聚变靶制备中介观尺度心轴的表面粗糙度,提出一种应用旋转设计技术安排试验的方法,通过非线性回归分析,建立基于进给量、背吃刀量、主轴转速和刀尖角四个主要切削参数的介观尺度心轴的表面粗糙度二次预测模型。分析结果表明,该模型的拟合值能较好地反映心轴车削表面粗糙度,并且具有比理论表面粗糙度计算值更高的精度。在主要切削参数中,进给量和刀尖角比背吃刀量和主轴转速对心轴表面粗糙度的影响更显著。利用优化得到的最佳表面粗糙度为目标切削条件,选用直线切削刃超细晶粒硬质合金刀具,在0.6 mm的心轴上得到Ra16.53 nm的表面粗糙度。

关键词: 表面粗糙度, 介观尺度, 旋转设计, 优化, 预测模型

Abstract: To control surface roughness of meso-scale mandrels for the fabrication of inertial confinement fusion (ICF) targets, a circumrotation design method is presented to plan cutting experiments. And a second-order model, based on the four main cutting parameters including feed, depth of cut, spindle speed and tool included angle, for surface roughness prediction of meso-scale mandrels is developed by means of nonlinear regression analysis. Analysis results demonstrate that the fitted values of this model approximate well the experimental values of surface roughness of mandrels turned, and have better precision than that of the computed values using theory model. Effects of feed and tool included angle are more significant than that of depth of cut and spindle speed on surface roughness of mandrels. Utilizing optimized cutting conditions and ultra-fine crystalline grain carbide tools with linear cutting edges, surface roughness Ra16.53 nm of the mandrel of 0.6 mm diameter is successfully obtained.

Key words: Circumrotation design, Meso-scale, Optimization, Prediction model, Surface roughness