分屑槽槽型对RCF型PCB铣刀的影响

2019-05-17

作者：廖湘辉，尹麒麟，程创，肖燕超，何彬单位：三峡大学

摘要：在切削过程中，RCF铣刀容易出现刀具磨损，甚至疲劳断裂。分屑槽槽型的设计对RCF铣刀的切削性能具有重要影响，但目前缺乏RCF铣刀分屑槽槽型对刀具性能影响的研究。对此，本文推导出RCF65型铣刀刀齿重叠率公式、分屑槽槽宽计算公式及槽深取值范围；利用SolidWorks三维建模软件建立RCF65型铣刀模型；应用AdvantEdge有限元分析软件分别对三种分屑槽槽型的刀具进行仿真研究，分析了不同分屑槽槽型对刀具在切削中的温度、切削力和应力的影响，找到了刀具易疲劳断裂区域。结果表明，RCF65半月型分屑槽铣刀性能最优。

关键词：RCF65型铣刀；分屑槽；芯圆比；刀齿重叠率

中图分类号：TG714；TH162文献标志码：ADOI：10.3969/j.issn.1000-7008.2019.05.010

Effect of Chipsplit Groove Shape on RCFtype PCB Milling Cutter

Liao Xianghui，Yin Qilin，Cheng Chuang，Xiao Yanchao，He Bin

Abstract:During the cutting process，the RCFtype milling cutter is prone to tool wear and even fatigue fracture，and the design of the chipsplit groove shape has an important influence on the cutting performance of the RCFtype milling cutter.In order to solve this problem，the overlap rate formula of RCF65 type milling cutter teeth，the calculation formula of slot width and the value range of slot depth are derived.By establishing RCF65 milling cutter model by SolidWorks，simulation of three types of cutters with chipsplit groove shape by using finite element analysis software AdvantEdge，the effects of different chipsplit groove shape on the temperature，cutting force and pressure of the tool during cutting are analyzed and the area where the tool is susceptible to fatigue fracture is found.The results show that the halfmoon type chipsplit groove RCF65 milling cutter′s performance is the best.

Keywords:RCF65type PCB milling cutter；chipsplit groove；core circle ratio；cutter tooth overlap rate