刀具几何参数对CFRP材料铣削力的影响
2018-11-12
作者：李锋1，张锡1，王景伦2，王博1，杜崇辉3
单位：1西安航空学院；2南京宝日钢丝制品有限公司；3西安航空发动机(集团)有限公司
摘要：为了提高CFRP材料铣削加工时的刀具寿命，优化此类零件加工时的刀具结构，设计了刀具几何参数（前角、后角、螺旋角）与CFRP材料铣削力之间的正交试验，得到了刀具几何参数对CFRP材料铣削力的影响规律。结果表明：刀具几何参数对X向切削力的影响程度由大到小依次为：前角、螺旋角、后角；对Y向切削力的影响程度由大到小依次为：前角、后角、螺旋角；对Z向切削力的影响程度由大到小依次为：螺旋角、后角、前角。当刀具前角增大时，三向切削力Fx、Fy、Fz整体呈减小趋势，而且减小的幅度相差不大；当刀具后角增大时，Fx和Fz先减小后增大，Fy一直减小；当刀具螺旋角增大时，Fz迅速升高，但Fx和Fy缓慢减小。
关键词：刀具几何参数；碳纤维/树脂基复合材料；铣削力
中图分类号：TG147；TH161文献标志码：A
Effect of Tool Geometric Parameters on Milling Force of Carbon/Epoxy Composite
Li Feng，Zhang Xi，Wang Jinglun，Wang Bo，Du Chonghui
Abstract:In order to improve the tool life in the milling of CFRP，the tool structure is optimized.The orthogonal experiment between the tool structure parameters（front angle，rear angle，rotation angle）and the milling force of CFRP are designed，and the effects of the tool structure parameters on the milling force of CFRP are obtained.For the cutting force of X direction，the impact of the three tool structure parameters is following：front angle，rotation angle，rear angle.For the cutting force of Y direction，the impact sequence is: front angle，rear angle，rotation angle.For the cutting force of Z direction，the impact sequence is: rotation angle，rear angle，front angle.With increasing of the front angle，the cutting forces in three directions of the CFRP are decreased.With increasing the rear angle，the cutting force of the X direction and Z direction are firstly decreased and then increased，but the cutting force in Y directions is decreased.With increasing of the rotation angle，the cutting force of the X direction and Y direction are slowly decreased，but the cutting force in Z direction is decreased rapidly.
Keywords:tool geometric parameters；carbon/epoxy composite；milling force