三维复杂槽型铣刀片切入过程应力状态的研究

Study on Stress State of 3D Complex Groove Milling Insert in Cut-in Course

以哈尔滨理工大学开发的波形刃铣刀片(前刀面为波形曲面)为例,针对刀具切入破损问题,确定了切入瞬间冲击载荷的分布与作用力方向;应用弹性力学方法,对三维复杂槽型铣刀片进行了应力状态分析,并讨论了其应力分布规律。理论分析结果与铣刀片应力场分析结果吻合较好。研究结果为解决自动化生产中刀具破损问题及槽型优化技术研究打下了理论基础。

Taking the milling insert with waved-edge （the curve rake plane） developed by the Harbin University of Science and Technology as an example and aiming at the tool＇s cut-in damage problem, the distribution and direction of the impact load while the instant cut-in were ascertained. The stress state of milling insert with 3D complex grooves was analyzed by means of the elasticity mechanics method, and the rule of its stress state distribution was discussed. The theoretic analysis result accords with the stress field analysis result well. All these studies provide a theoretic base for solving the cutter damage problem in the automatic production and the optimum design of groove.