Efficient and accurate worm grinding of spur face gears according to an advanced geometrical analysis and a closed-loop manufacturing process  

基于几何分析和闭环制造工艺的高效高精直齿面齿轮蜗杆磨削

作　　者：ZHOU Yuan-sheng TANG Zhong-wei SHI Xian-lin TANG Jin-yuan LI Zheng-min-qing 周元生;唐忠威;石贤林;唐进元;李政民卿(State Key Laboratory of High Performance Complex Manufacturing,Central South University,Changsha 410083,China;College of Mechanical and Electrical Engineering,Central South University,Changsha 410083,China;National Key Laboratory of Science and Technology on Helicopter Transmission,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]State Key Laboratory of High Performance Complex Manufacturing,Central South University,Changsha 410083,China [2]College of Mechanical and Electrical Engineering,Central South University,Changsha 410083,China [3]National Key Laboratory of Science and Technology on Helicopter Transmission,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China

出　　处：《Journal of Central South University》2022年第1期1-13,共13页中南大学学报（英文版）

基　　金：Project(2019 YFB 2004700)supported by the National Key R&D Project of China;Project(HTL-O-19 K 02)supported by National Key Laboratory of Science and Technology on Helicopter Transmission,Nanjing University of Aeronautics and Astronautics,China。

摘　　要：Worm grinding has been applied to manufacture gears to pursue high accuracy and fine surface finish.When the worm used to grind face gears is manufactured with multi-axis computer numerical control(CNC)machining,the machining accuracy is usually improved by increasing the number of tool paths with more time cost.Differently,this work proposes a generated method to improve the efficiency by dressing the worm surface with only one path,and a closed-loop manufacturing process is applied to ensure the machining accuracy.According to an advanced geometric analysis,the worm surface is practically approximated as a swept surface generated by a planar curve.Meanwhile,this curve is applied as the profile of a dressing wheel,which is used to dress the worm surface.The practical machining is carried out in a CNC machine tool,which was originally used to grind helical gears.Finally,a closed-loop manufacturing process including machining,measurement,and modification is proposed to compensate the machining errors.The proposed method is validated with simulations and practical experiments.蜗杆磨削工艺广泛应用于齿轮制造过程以获得较高的加工精度及表面质量。在多轴数控机床上进行蜗杆磨面齿轮时,通常需采用增加刀具路径数目的方法来提高加工精度,也相应地延长了加工时间。本文提出了一种仅用一条路径的蜗杆齿面展成高效修整方法,并采用闭环加工方法来保证加工精度。首先,对磨削直齿面齿轮的蜗杆齿面进行深度几何分析,发现该蜗杆齿面可以近似为由平面曲线形成的扫掠面。然后,以该平面曲线作为金刚滚轮的齿廓来对蜗杆表面进行修整。接着,在一台由斜齿轮磨齿机数控改造得到的机床上进行了加工试验验证。最后,提出了一种包括“加工、测量和反调修正”的闭环制造工艺来补偿加工误差,并且通过仿真和实验验证了该方法的有效性。

关 键 词：face gears worm grinding worm dressing geometrical analysis closed-loop manufacturing 

分 类 号：TG61[金属学及工艺—金属切削加工及机床]