【作者】 张闰红；

【导师】 郑敏利；

【作者基本信息】 哈尔滨理工大学 ， 机械制造及自动化， 2004， 硕士

【摘要】 在铣削过程中,铣削力直接影响着铣削热的产生,而铣削力的分布规律又影响着刀片铣削性能,故有必要深入了解及认识各种铣削条件下的铣削力大小及其分布规律。多年来,人们对铣削力进行了大量研究,取得了很多重要成果。但是对铣削力的研究大多是针对平前刀面铣刀片而进行的。近年来硬质合金刀具材料性能的提高,使得具有槽型的刀片被广泛应用到自动化生产中。刀片槽型使铣削过程中的受力情况更为复杂,而目前对于具有槽型的刀片的研究缺乏理论基础,本文从提高三维复杂槽型铣刀片的切削性能和可靠性出发,对三维复杂槽型铣刀片铣削力的分布规律进行了研究。首先,采用铣削力测量系统,进行了铣削力试验,利用动态数据采集系统,对不同切削参数下的五种铣刀片的铣削力进行了动态采集,并对不同槽型铣刀片铣削力进行了分析。其次,利用MATLAB,依据试验获得的数据得出铣削力和刀-屑接触面积的实验式,在此基础上结合铣削力数学模型建立了平前刀面铣刀片和波形刃铣刀片的表面受力密度函数,为应力场的有限元分析建立了边界条件。最后,利用有限元分析软件ANSYS,对平前刀面铣刀片和波形刃铣刀片先进行实体建模和网格划分,再利用已求得的密度函数作为边界条件,对铣刀片进行应力场分析。以上研究为三维槽型铣刀片综合的物理场量化的数学模型和槽型优化CAD系统的建立奠定了基础。为铣刀片槽型的开发研究提供了一定的依据。更多还原

【Abstract】 In the milling process, milling force can decide the milling heat, and the distributing rules also infect the milling capabilities of the insert, so it is very important to deeply study the milling force of diversified milling conditions. For years, man did lots of researches on the milling force and got many valuable results. But these researches are almost about milling force of the flat rake milling inserts. These years the improve of the inert material capabilities make the milling insert with 3D groove be used to automatic production. The using of groove makes the force conditions more complex, but the study about the groove insert lack of the theory supports, for the improvement of cutting capabilities and reliabilities of grooved milling insert, the distributing principles of the milling force with grooved insert are studied in this dissertation.Firstly, the milling force experiments had been done with milling force measuring system. Using dynamic data collection system, the milling force data of the same cutting parameters with different milling insert is collected and analyzed.Secondly, the experiment formula of milling force and cutter-chip is built using MATLAB according to the experiment data. Based on the formula and the math model, the density function is built, at the same time the function is visualized, which provides the boundary condition for finite analysis of stress field.Finally, the solid model and meshing model of flat rake milling insert and waved edge milling insert is formatted, then using the density function as the boundary condition, get the result of the finite stress analysis.All these studies provide the reference for the building of physics field model and groove optimization of 3D groove milling insert and provide the theory gist for the groove development of milling insert.更多还原