波形刃刀片表面受力密度及应力状态分布规律  

Distribution principle of face force density and stress state for the waved-edge milling insert

作　　者：吴明阳[1] 刘献礼[1] 

机构地区：[1]哈尔滨理工大学机械动力工程学院,哈尔滨150080

出　　处：《哈尔滨工业大学学报》2009年第9期156-159,共4页Journal of Harbin Institute of Technology

基　　金：教育部科学技术研究重点项目(209034);青年学术骨干支持计划(1154G39)

摘　　要：为进行三维复杂槽型铣刀片切削性能及槽型优选,针对哈尔滨理工大学开发的波形刃(前刀面为波形曲面)铣刀片,进行表面受力密度分布规律及应力状态的研究.在已建立的铣削力数学模型的基础上,通过铣削力试验以及刀-屑接触面积的试验,建立波形刃铣刀片前刀面受力密度函数;对表面受力密度函数进行定量分析计算并进行三维图形表示,分析其分布规律;应用弹性力学方法对波形刃铣刀片进行应力状态分析,理论分析结果与铣刀片应力场分析结果吻合较好.该研究成果为解决自动化生产中刀具破损这一关键技术问题及槽型优化技术的研究奠定了理论基础.In order to discuss the cutting capability and groove optimization of complex 3D groove milling insert, the distribution principle of face force density and stress state was studied for the waved-edge milling insert （the curve rake plane） developed by Harbin University of Science and Technology. Based on the mathematical model of milling force, the force density function of the curve rake plane was built by the milling force and chip-tool contact experiments. To analyze its distribution principle, quantitative calculation on the force density function was conducted and the distribution model of force density function was shown with 3D figure. The stress state of the waved-edge milling insert was analyzed with the elasticity mechanics, and the distribution principle of stress state was discussed. The theoretic analysis result accords with the stress field analysis result well. All these studies provide a theoretic basis for the cutter disrepair which is the key problem in the automatized production and groove optimization.

关 键 词：三维复杂槽型 铣刀片 密度函数 应力状态 

分 类 号：TG714[金属学及工艺—刀具与模具]