摘要
为优化切削力预测模型计算方法,提出一种基于圆弧头立铣刀螺旋角参数修正的方法,以圆弧头立铣刀为例,建立铣刀刃线参数化模型,将立铣刀切削刃离散为一系列刀刃微元,计算每一刀刃微元螺旋角参数值,通过斜角切削模型计算刀刃微元剪切区域的流动应力,并根据刀刃微元螺旋角参数修正该计算过程。基于微元切削刃力平衡关系与刀具几何结构将剪切应力转换为三向切削力。通过对比切削试验数据与优化模型计算数据,验证该方法具有有效性。
A cutting force calculation optimization approach based on the tool helix angle parameter correction is provided in order to optimize the cutting force prediction model′s calculation method.With the arc end mill as an example,creating a parametric representation of the vertical milling cutter edge line for the arc head,and the end mill's cutting edge is divided into a number of discretized cutting edge microelements.Each cutting-edge microelement′s helix angle parameter is determined,the flow stress in the microelement′s shear region is calculated using the beveled cutting model,and the results of this computation are adjusted based on the cutting edge microelement′s helix angle parameter.With the tool geometry and the microelement cutting edge force balancing relationship are used to transform the shear stresses into three-way cutting forces.Finally,the comparison between the experimental data of the end milling cutter cutting and the calculation data of the optimization model confirms the effectiveness of the optimization approach.
作者
张越新凯
卓秀彬
魏俊
梁彬
江磊
Zhang Yuexinkai;Zhuo Xiubin;Wei Jun;Liang Bin;Jiang Lei(School of Mechanical Engineering,Southwest Jiaotong University,Chengdu 610031,China;不详)
出处
《工具技术》
北大核心
2025年第2期71-77,共7页
Tool Engineering
基金
四川省重点研发计划(23ZDYF0244)。
关键词
切削力模型
斜角切削
优化方法
圆弧头立铣刀
cutting force model
oblique cutting
optimization method
arc end mill
