小模数齿轮的缓进深切成形磨削实验  

Experimental research on creep feed deep profile grinding of small-module gears

作　　者：易军 李治宏 周炜 YI Jun;LI Zhihong;ZHOU Wei(Hunan Provincial Key Laboratory of High Efficiency and Precision Machining of Difficult-to-cut Materials,Xiangtan 411201,Hunan,China;College of Mechanical and Electrical Engineering,Hunan University of Science and Technology,Xiangtan 411201,Hunan,China)

机构地区：[1]难加工材料高效精密加工湖南省重点实验室,湖南湘潭411201 [2]湖南科技大学机电工程学院,湖南湘潭411201

出　　处：《金刚石与磨料磨具工程》2023年第3期332-339,共8页Diamond & Abrasives Engineering

基　　金：国家自然科学基金(51905168);湖南省自然科学基金(2020JJ5192)。

摘　　要：针对高精度齿轮加工工艺路线长的问题,提出小模数齿轮缓进深切成形磨削方法并开展磨削实验,分析不同进给速度对磨削功率、工件磨削烧伤、砂轮磨损等的影响规律,且采用复刻法研究砂轮的磨损过程。结果表明:磨削功率峰值随进给速度的增加而增大;当进给速度超过150 mm/min时,工件表面发生磨削烧伤,其磨削表面的硬度明显高于工件初始表面的硬度,且工件表层发生了马氏体相变;距离磨削表面的深度增加,其硬度值均呈下降趋势,且齿底位置的硬化层深度小于齿廓两侧的硬化层深度;砂轮的磨损过程分为初期磨损、稳定磨损和快速磨损阶段3个阶段,其中稳定磨损阶段的材料去除体积约为2000 mm^(3),过大的进给速度将引起砂轮的严重磨损。In view of the long process route of high-precision gear machining,a method of creep feed deep profile grinding of small-module gears was proposed.The experiments of creep feed deep profile grinding of small-module gears were carried out.The effects of different feed speeds on the grinding power,the workpiece grinding burn and the grinding wheel wear were analyzed.The wear process of grinding wheels was studied by replica method.The results show that the grinding power peak increases with the increase of feed speed.When the feed speed exceeds 150 mm/min,the grinding burns occur on the workpiece surface.Besides,the hardness of the grinding surface is significantly higher than that of the initial hardness,and the martensitic phase transformation occurs on the workpiece surface.As the depth from the grinding surface increases,the hardness values show a downward trend,and the depth of the hardness layer at the tooth bottom is smaller than that at the both sides of the tooth profile.The wear process of grinding wheels is di-vided into initial wear stage,stable wear stage and rapid wear stage.The material removal volume of stable wear stage is about 2000 mm^(3).Excessive feed rate will cause severe wear of the grinding wheel.

关 键 词：齿轮 缓进深切成形磨削 磨削功率 磨削烧伤 砂轮磨损 

分 类 号：TG58[金属学及工艺—金属切削加工及机床] TG74[化学工程—高温制品工业] TQ164