双刀盘铣齿机床与Free-form型机床的加工运动等效转换  

Equivalent Conversion of Machining Motion between Double Cutter Disks Gear Milling Machine Tool and Free-form Machine Tool

作　　者：王志永[1] 李文强 张宇[1] WANG Zhiyong;LI Wenqiang;ZHANG Yu(College of Mechanical and Electrical Engineering,Central South University of Forestry and Technology,Changsha 410004)

机构地区：[1]中南林业科技大学机电工程学院,长沙410004

出　　处：《机械工程学报》2024年第21期312-319,共8页Journal of Mechanical Engineering

基　　金：国家自然科学基金企业创新发展联合基金(U22B2084);湖南省教育厅资助科研(20A527)资助项目。

摘　　要：为了实现在国产数控螺旋锥齿轮加工机床上采用单刀盘加工直齿锥齿轮,基于空间运动学原理,在保证工件轴线与刀盘轴线相对位置及相对运动关系不变的前提下,将双刀盘铣齿机床中刀盘与工件的相对位置和相对运动关系等效转换至Free-form型机床,得到以时间为自变量的Free-form型机床各数控轴的运动表达式;通过Matlab计算每个加工时刻Free-form型机床运动轴的位置坐标点并编写数控加工程序;基于Vericut仿真软件,建立了Free-form型机床加工环境并对加工过程进行仿真,仿真结果验证了运动转换方法和数控加工程序的正确性;在实际Free-form型机床上进行了铣齿加工实验,利用齿轮测量中心对实验工件的实际齿面相对于理论齿面的齿形误差进行了检测,齿形误差在10.8μm以内;利用滚动检查机对齿轮副的接触区进行检验,实际啮合接触区与TCA结果基本一致。仿真加工和实际切齿加工实验的结果验证了机床加工运动等效转换方法的正确性。To realize the machining of straight bevel gears with a single cutter disk on a domestic CNC spiral bevel gear machining machine,based on the principle of spatial kinematics,and on the premise of ensuring that the relative position and relative motion relationship between the workpiece axis and the cutter disk axis remain unchanged,the relative position and relative motion relationship between the cutter disk and the workpiece in the double cutter disk gear milling machine tool are equivalent converted to the Free-form machine tool,and the motion expressions of each numerical control axis of Free-form machine tool with time as independent variable are obtained;The position coordinates of the motion axis of the Free-form machine are calculated at each machining moment by Matlab and the NC machining program is written;based on Vericut simulation software,a Free-form machining environment is established and the machining process is simulated.The simulation results verified the correctness of the motion conversion method and CNC machining program;The milling tooth machining experiment is conducted on the actual Free-form machine tool,and the tooth profile error of the actual tooth surface of the experimental workpiece relative to the theoretical tooth surface is detected by the gear measurement center,and the tooth profile error is within 10.8μm;the contact area of the gear pair is inspected by rolling inspection machine,and the actual meshing contact area is consistent with the TCA result.The results of simulation machining and actual gear cutting machining experiments verify the correctness of the equivalent conversion method for machine tool machining motion.

关 键 词：双刀盘铣齿机床 Free-form型机床 运动转换 机床调整参数 直齿锥齿轮 

分 类 号：TG611[金属学及工艺—金属切削加工及机床]