刀具钝化半径的求解模型
2019-04-23
作者：孔维平，张永强，文立东，赵巍，宋安邦
单位：成都工具研究所有限公司
摘要：刀具钝化半径的大小直接影响刀具使用寿命。本文针对刀具钝化情况建立了摩擦力模型、碰撞断裂磨损模型和钝化半径求解模型。经分析得到：钝化半径与刀具材料和结构特征、混合料、钝化时间和钝化运动情况有关；刀具刃长越短，前刀面与后刀面的夹角越小，钝化混合料的速度越大，达到目标钝化半径所需的时间就越少；通过钝化半径求解模型还可以预测刀具钝化半径大小。
关键词：钝化半径；摩擦力；碰撞；硬质合金刀具
中图分类号：TG71；TH161文献标志码：ADOI：10.3969/j.issn.1000-7008.2019.04.018
Model for Calculating Tool Passivation Radius
Kong Weiping，Zhang Yongqiang，Wen Lidong，Zhao Wei，Song Anbang
Abstract:The size of the tool passivation radius directly affects the tool service life. In view of the tool passion，friction model，collision fracture wear model and passivation radius solution model are established.The results show that the passivation radius is related to the characteristics of tool material and structre，mixture，passivation time and passivation motion. The shorter the cutter blade is the angle between the front cutter face and the back cutter face is samaller，the speed of the passivation mixture is greater，and the time to reach the target radius is shorter.The model can also predict the size of the tool passivation radius by using the passivation radius model.
Keywords:passivation radius；friction；force；impact carbide tool