面向切屑形成过程的瞬时滚削力模型研究  

Research on Instantaneous Hobbing Force Model for Chip Forming Processes

作　　者：丁国龙[1] 叶梦传 向华[2] 杨春兰 DING Guolong;YE Mengchuan;XIANG Hua;YANG Chunlan(School of Mechanical Engineering,Hubei University of Technology,Wuhan,430068;National NC System Engineering Research Center,Huazhong University of Science and Technology,Wuhan,430074;Qinchuan Group(Xi'an)Technology Research Institute Co.,Ltd.,Xi'an,710016)

机构地区：[1]湖北工业大学机械工程学院,武汉430068 [2]华中科技大学国家数控系统工程技术研究中心,武汉430074 [3]秦川集团(西安)技术研究院有限公司,西安710016

出　　处：《中国机械工程》2021年第21期2562-2570,共9页China Mechanical Engineering

基　　金：湖北省科技重大专项(2020AGA018-04)。

摘　　要：建立滚齿加工的时变滚削力模型是优化滚齿加工工艺参数、减少滚削力波动、提高加工精度的前提,面向滚齿切屑形成过程建立时变滚削力模型是提高建模精度的最直接的物理方法。针对干切滚齿的切屑形成过程,建立滚刀前刀面运动模型,利用MATLAB生成刀齿运动轨迹的动态链接库。基于SolidWorks进行三维布尔运算,提取未变形切屑几何特征,开发切屑几何模型动态链接库。通过C#调用MATLAB和SolidWorks动态链接库,实现三维运动仿真,进而构建多齿瞬时滚削力模型。通过YK3216CNC滚齿机进行样件加工,结合HNC-SSTT软件进行全行程电流检测,间接测量瞬时滚削力。仿真加工的瞬时滚削力与实测滚削力变化趋势基本一致,表明该模型合理、有效。The establishment of time-varying hobbing force model in hobbing processes was the premise of optimizing hobbing process parameters,reducing hobbing force fluctuation and improving machining accuracy,where the model for hobbing chip forming processes was the most direct physical method to improve modeling accuracy.For the chip forming processes of dry gear hobbing,a model of hob rake face motion was established,and the dynamic link library of hob tooth motion track was generated by MATLAB.After that,three-dimensional Boolean operation was performed to extract geometric features of undistorted chips and to develop dynamic link library of chip geometric model based on SolidWorks.In addition,C#was used to call the dynamic link library of MATLAB and SolidWorks to realize three-dimensional motion simulation for building multi-tooth instantaneous hobbing force model.Indirected measurement of instantaneous hobbing forces was performed through prototype hobbing on YK3216CNC gear hobbing machine and full stroke current detection was carried out combined with HNC-SSTT software.The instantaneous hobbing forces of simulation machining are basically in accordance with the change trend of measured hobbing forces,which indicates that the instantaneous hobbing force model is reasonable and effective.

关 键 词：切屑形成过程 加工运动模型 C#混合编程 瞬时滚削力 

分 类 号：TH164[机械工程—机械制造及自动化] TG659[金属学及工艺—金属切削加工及机床]